提交 ea66e4c1 编写于 作者: L lyd911

delete redundant dep files

上级 c67649d0

要显示的变更太多。

To preserve performance only 1000 of 1000+ files are displayed.
......@@ -24,10 +24,17 @@
# go-tests = true
# unused-packages = true
[[constraint]]
name = "github.com/ghodss/yaml"
version = "1.0.0"
[[constraint]]
branch = "master"
name = "github.com/kubeflow/common"
name = "github.com/golang/glog"
[[constraint]]
name = "github.com/golang/protobuf"
version = "1.3.5"
[[constraint]]
name = "github.com/onrik/logrus"
......@@ -35,29 +42,25 @@
[[constraint]]
name = "github.com/sirupsen/logrus"
version = "1.4.2"
version = "1.5.0"
[[constraint]]
name = "k8s.io/api"
version = "0.17.4"
[[constraint]]
name = "k8s.io/apiextensions-apiserver"
version = "0.17.4"
[[constraint]]
name = "k8s.io/apimachinery"
version = "0.17.4"
[[constraint]]
name = "k8s.io/client-go"
version = "4.0.0"
version = "0.17.4"
[prune]
go-tests = true
non-go = true
unused-packages = true
[[constraint]]
name = "k8s.io/code-generator"
version = "release-1.7"
version = "4.0.0"
[[constraint]]
name = "cloud.google.com/go"
version = "0.55.0"
language: go
go:
- 1.4.x
- 1.5.x
- 1.6.x
- 1.7.x
- 1.8.x
- 1.9.x
- "1.10.x"
- "1.11.x"
- tip
Copyright (c) 2012, Martin Angers
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
* Neither the name of the author nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# Purell
Purell is a tiny Go library to normalize URLs. It returns a pure URL. Pure-ell. Sanitizer and all. Yeah, I know...
Based on the [wikipedia paper][wiki] and the [RFC 3986 document][rfc].
[![build status](https://travis-ci.org/PuerkitoBio/purell.svg?branch=master)](http://travis-ci.org/PuerkitoBio/purell)
## Install
`go get github.com/PuerkitoBio/purell`
## Changelog
* **v1.1.1** : Fix failing test due to Go1.12 changes (thanks to @ianlancetaylor).
* **2016-11-14 (v1.1.0)** : IDN: Conform to RFC 5895: Fold character width (thanks to @beeker1121).
* **2016-07-27 (v1.0.0)** : Normalize IDN to ASCII (thanks to @zenovich).
* **2015-02-08** : Add fix for relative paths issue ([PR #5][pr5]) and add fix for unnecessary encoding of reserved characters ([see issue #7][iss7]).
* **v0.2.0** : Add benchmarks, Attempt IDN support.
* **v0.1.0** : Initial release.
## Examples
From `example_test.go` (note that in your code, you would import "github.com/PuerkitoBio/purell", and would prefix references to its methods and constants with "purell."):
```go
package purell
import (
"fmt"
"net/url"
)
func ExampleNormalizeURLString() {
if normalized, err := NormalizeURLString("hTTp://someWEBsite.com:80/Amazing%3f/url/",
FlagLowercaseScheme|FlagLowercaseHost|FlagUppercaseEscapes); err != nil {
panic(err)
} else {
fmt.Print(normalized)
}
// Output: http://somewebsite.com:80/Amazing%3F/url/
}
func ExampleMustNormalizeURLString() {
normalized := MustNormalizeURLString("hTTpS://someWEBsite.com:443/Amazing%fa/url/",
FlagsUnsafeGreedy)
fmt.Print(normalized)
// Output: http://somewebsite.com/Amazing%FA/url
}
func ExampleNormalizeURL() {
if u, err := url.Parse("Http://SomeUrl.com:8080/a/b/.././c///g?c=3&a=1&b=9&c=0#target"); err != nil {
panic(err)
} else {
normalized := NormalizeURL(u, FlagsUsuallySafeGreedy|FlagRemoveDuplicateSlashes|FlagRemoveFragment)
fmt.Print(normalized)
}
// Output: http://someurl.com:8080/a/c/g?c=3&a=1&b=9&c=0
}
```
## API
As seen in the examples above, purell offers three methods, `NormalizeURLString(string, NormalizationFlags) (string, error)`, `MustNormalizeURLString(string, NormalizationFlags) (string)` and `NormalizeURL(*url.URL, NormalizationFlags) (string)`. They all normalize the provided URL based on the specified flags. Here are the available flags:
```go
const (
// Safe normalizations
FlagLowercaseScheme NormalizationFlags = 1 << iota // HTTP://host -> http://host, applied by default in Go1.1
FlagLowercaseHost // http://HOST -> http://host
FlagUppercaseEscapes // http://host/t%ef -> http://host/t%EF
FlagDecodeUnnecessaryEscapes // http://host/t%41 -> http://host/tA
FlagEncodeNecessaryEscapes // http://host/!"#$ -> http://host/%21%22#$
FlagRemoveDefaultPort // http://host:80 -> http://host
FlagRemoveEmptyQuerySeparator // http://host/path? -> http://host/path
// Usually safe normalizations
FlagRemoveTrailingSlash // http://host/path/ -> http://host/path
FlagAddTrailingSlash // http://host/path -> http://host/path/ (should choose only one of these add/remove trailing slash flags)
FlagRemoveDotSegments // http://host/path/./a/b/../c -> http://host/path/a/c
// Unsafe normalizations
FlagRemoveDirectoryIndex // http://host/path/index.html -> http://host/path/
FlagRemoveFragment // http://host/path#fragment -> http://host/path
FlagForceHTTP // https://host -> http://host
FlagRemoveDuplicateSlashes // http://host/path//a///b -> http://host/path/a/b
FlagRemoveWWW // http://www.host/ -> http://host/
FlagAddWWW // http://host/ -> http://www.host/ (should choose only one of these add/remove WWW flags)
FlagSortQuery // http://host/path?c=3&b=2&a=1&b=1 -> http://host/path?a=1&b=1&b=2&c=3
// Normalizations not in the wikipedia article, required to cover tests cases
// submitted by jehiah
FlagDecodeDWORDHost // http://1113982867 -> http://66.102.7.147
FlagDecodeOctalHost // http://0102.0146.07.0223 -> http://66.102.7.147
FlagDecodeHexHost // http://0x42660793 -> http://66.102.7.147
FlagRemoveUnnecessaryHostDots // http://.host../path -> http://host/path
FlagRemoveEmptyPortSeparator // http://host:/path -> http://host/path
// Convenience set of safe normalizations
FlagsSafe NormalizationFlags = FlagLowercaseHost | FlagLowercaseScheme | FlagUppercaseEscapes | FlagDecodeUnnecessaryEscapes | FlagEncodeNecessaryEscapes | FlagRemoveDefaultPort | FlagRemoveEmptyQuerySeparator
// For convenience sets, "greedy" uses the "remove trailing slash" and "remove www. prefix" flags,
// while "non-greedy" uses the "add (or keep) the trailing slash" and "add www. prefix".
// Convenience set of usually safe normalizations (includes FlagsSafe)
FlagsUsuallySafeGreedy NormalizationFlags = FlagsSafe | FlagRemoveTrailingSlash | FlagRemoveDotSegments
FlagsUsuallySafeNonGreedy NormalizationFlags = FlagsSafe | FlagAddTrailingSlash | FlagRemoveDotSegments
// Convenience set of unsafe normalizations (includes FlagsUsuallySafe)
FlagsUnsafeGreedy NormalizationFlags = FlagsUsuallySafeGreedy | FlagRemoveDirectoryIndex | FlagRemoveFragment | FlagForceHTTP | FlagRemoveDuplicateSlashes | FlagRemoveWWW | FlagSortQuery
FlagsUnsafeNonGreedy NormalizationFlags = FlagsUsuallySafeNonGreedy | FlagRemoveDirectoryIndex | FlagRemoveFragment | FlagForceHTTP | FlagRemoveDuplicateSlashes | FlagAddWWW | FlagSortQuery
// Convenience set of all available flags
FlagsAllGreedy = FlagsUnsafeGreedy | FlagDecodeDWORDHost | FlagDecodeOctalHost | FlagDecodeHexHost | FlagRemoveUnnecessaryHostDots | FlagRemoveEmptyPortSeparator
FlagsAllNonGreedy = FlagsUnsafeNonGreedy | FlagDecodeDWORDHost | FlagDecodeOctalHost | FlagDecodeHexHost | FlagRemoveUnnecessaryHostDots | FlagRemoveEmptyPortSeparator
)
```
For convenience, the set of flags `FlagsSafe`, `FlagsUsuallySafe[Greedy|NonGreedy]`, `FlagsUnsafe[Greedy|NonGreedy]` and `FlagsAll[Greedy|NonGreedy]` are provided for the similarly grouped normalizations on [wikipedia's URL normalization page][wiki]. You can add (using the bitwise OR `|` operator) or remove (using the bitwise AND NOT `&^` operator) individual flags from the sets if required, to build your own custom set.
The [full godoc reference is available on gopkgdoc][godoc].
Some things to note:
* `FlagDecodeUnnecessaryEscapes`, `FlagEncodeNecessaryEscapes`, `FlagUppercaseEscapes` and `FlagRemoveEmptyQuerySeparator` are always implicitly set, because internally, the URL string is parsed as an URL object, which automatically decodes unnecessary escapes, uppercases and encodes necessary ones, and removes empty query separators (an unnecessary `?` at the end of the url). So this operation cannot **not** be done. For this reason, `FlagRemoveEmptyQuerySeparator` (as well as the other three) has been included in the `FlagsSafe` convenience set, instead of `FlagsUnsafe`, where Wikipedia puts it.
* The `FlagDecodeUnnecessaryEscapes` decodes the following escapes (*from -> to*):
- %24 -> $
- %26 -> &
- %2B-%3B -> +,-./0123456789:;
- %3D -> =
- %40-%5A -> @ABCDEFGHIJKLMNOPQRSTUVWXYZ
- %5F -> _
- %61-%7A -> abcdefghijklmnopqrstuvwxyz
- %7E -> ~
* When the `NormalizeURL` function is used (passing an URL object), this source URL object is modified (that is, after the call, the URL object will be modified to reflect the normalization).
* The *replace IP with domain name* normalization (`http://208.77.188.166/ → http://www.example.com/`) is obviously not possible for a library without making some network requests. This is not implemented in purell.
* The *remove unused query string parameters* and *remove default query parameters* are also not implemented, since this is a very case-specific normalization, and it is quite trivial to do with an URL object.
### Safe vs Usually Safe vs Unsafe
Purell allows you to control the level of risk you take while normalizing an URL. You can aggressively normalize, play it totally safe, or anything in between.
Consider the following URL:
`HTTPS://www.RooT.com/toto/t%45%1f///a/./b/../c/?z=3&w=2&a=4&w=1#invalid`
Normalizing with the `FlagsSafe` gives:
`https://www.root.com/toto/tE%1F///a/./b/../c/?z=3&w=2&a=4&w=1#invalid`
With the `FlagsUsuallySafeGreedy`:
`https://www.root.com/toto/tE%1F///a/c?z=3&w=2&a=4&w=1#invalid`
And with `FlagsUnsafeGreedy`:
`http://root.com/toto/tE%1F/a/c?a=4&w=1&w=2&z=3`
## TODOs
* Add a class/default instance to allow specifying custom directory index names? At the moment, removing directory index removes `(^|/)((?:default|index)\.\w{1,4})$`.
## Thanks / Contributions
@rogpeppe
@jehiah
@opennota
@pchristopher1275
@zenovich
@beeker1121
## License
The [BSD 3-Clause license][bsd].
[bsd]: http://opensource.org/licenses/BSD-3-Clause
[wiki]: http://en.wikipedia.org/wiki/URL_normalization
[rfc]: http://tools.ietf.org/html/rfc3986#section-6
[godoc]: http://go.pkgdoc.org/github.com/PuerkitoBio/purell
[pr5]: https://github.com/PuerkitoBio/purell/pull/5
[iss7]: https://github.com/PuerkitoBio/purell/issues/7
/*
Package purell offers URL normalization as described on the wikipedia page:
http://en.wikipedia.org/wiki/URL_normalization
*/
package purell
import (
"bytes"
"fmt"
"net/url"
"regexp"
"sort"
"strconv"
"strings"
"github.com/PuerkitoBio/urlesc"
"golang.org/x/net/idna"
"golang.org/x/text/unicode/norm"
"golang.org/x/text/width"
)
// A set of normalization flags determines how a URL will
// be normalized.
type NormalizationFlags uint
const (
// Safe normalizations
FlagLowercaseScheme NormalizationFlags = 1 << iota // HTTP://host -> http://host, applied by default in Go1.1
FlagLowercaseHost // http://HOST -> http://host
FlagUppercaseEscapes // http://host/t%ef -> http://host/t%EF
FlagDecodeUnnecessaryEscapes // http://host/t%41 -> http://host/tA
FlagEncodeNecessaryEscapes // http://host/!"#$ -> http://host/%21%22#$
FlagRemoveDefaultPort // http://host:80 -> http://host
FlagRemoveEmptyQuerySeparator // http://host/path? -> http://host/path
// Usually safe normalizations
FlagRemoveTrailingSlash // http://host/path/ -> http://host/path
FlagAddTrailingSlash // http://host/path -> http://host/path/ (should choose only one of these add/remove trailing slash flags)
FlagRemoveDotSegments // http://host/path/./a/b/../c -> http://host/path/a/c
// Unsafe normalizations
FlagRemoveDirectoryIndex // http://host/path/index.html -> http://host/path/
FlagRemoveFragment // http://host/path#fragment -> http://host/path
FlagForceHTTP // https://host -> http://host
FlagRemoveDuplicateSlashes // http://host/path//a///b -> http://host/path/a/b
FlagRemoveWWW // http://www.host/ -> http://host/
FlagAddWWW // http://host/ -> http://www.host/ (should choose only one of these add/remove WWW flags)
FlagSortQuery // http://host/path?c=3&b=2&a=1&b=1 -> http://host/path?a=1&b=1&b=2&c=3
// Normalizations not in the wikipedia article, required to cover tests cases
// submitted by jehiah
FlagDecodeDWORDHost // http://1113982867 -> http://66.102.7.147
FlagDecodeOctalHost // http://0102.0146.07.0223 -> http://66.102.7.147
FlagDecodeHexHost // http://0x42660793 -> http://66.102.7.147
FlagRemoveUnnecessaryHostDots // http://.host../path -> http://host/path
FlagRemoveEmptyPortSeparator // http://host:/path -> http://host/path
// Convenience set of safe normalizations
FlagsSafe NormalizationFlags = FlagLowercaseHost | FlagLowercaseScheme | FlagUppercaseEscapes | FlagDecodeUnnecessaryEscapes | FlagEncodeNecessaryEscapes | FlagRemoveDefaultPort | FlagRemoveEmptyQuerySeparator
// For convenience sets, "greedy" uses the "remove trailing slash" and "remove www. prefix" flags,
// while "non-greedy" uses the "add (or keep) the trailing slash" and "add www. prefix".
// Convenience set of usually safe normalizations (includes FlagsSafe)
FlagsUsuallySafeGreedy NormalizationFlags = FlagsSafe | FlagRemoveTrailingSlash | FlagRemoveDotSegments
FlagsUsuallySafeNonGreedy NormalizationFlags = FlagsSafe | FlagAddTrailingSlash | FlagRemoveDotSegments
// Convenience set of unsafe normalizations (includes FlagsUsuallySafe)
FlagsUnsafeGreedy NormalizationFlags = FlagsUsuallySafeGreedy | FlagRemoveDirectoryIndex | FlagRemoveFragment | FlagForceHTTP | FlagRemoveDuplicateSlashes | FlagRemoveWWW | FlagSortQuery
FlagsUnsafeNonGreedy NormalizationFlags = FlagsUsuallySafeNonGreedy | FlagRemoveDirectoryIndex | FlagRemoveFragment | FlagForceHTTP | FlagRemoveDuplicateSlashes | FlagAddWWW | FlagSortQuery
// Convenience set of all available flags
FlagsAllGreedy = FlagsUnsafeGreedy | FlagDecodeDWORDHost | FlagDecodeOctalHost | FlagDecodeHexHost | FlagRemoveUnnecessaryHostDots | FlagRemoveEmptyPortSeparator
FlagsAllNonGreedy = FlagsUnsafeNonGreedy | FlagDecodeDWORDHost | FlagDecodeOctalHost | FlagDecodeHexHost | FlagRemoveUnnecessaryHostDots | FlagRemoveEmptyPortSeparator
)
const (
defaultHttpPort = ":80"
defaultHttpsPort = ":443"
)
// Regular expressions used by the normalizations
var rxPort = regexp.MustCompile(`(:\d+)/?$`)
var rxDirIndex = regexp.MustCompile(`(^|/)((?:default|index)\.\w{1,4})$`)
var rxDupSlashes = regexp.MustCompile(`/{2,}`)
var rxDWORDHost = regexp.MustCompile(`^(\d+)((?:\.+)?(?:\:\d*)?)$`)
var rxOctalHost = regexp.MustCompile(`^(0\d*)\.(0\d*)\.(0\d*)\.(0\d*)((?:\.+)?(?:\:\d*)?)$`)
var rxHexHost = regexp.MustCompile(`^0x([0-9A-Fa-f]+)((?:\.+)?(?:\:\d*)?)$`)
var rxHostDots = regexp.MustCompile(`^(.+?)(:\d+)?$`)
var rxEmptyPort = regexp.MustCompile(`:+$`)
// Map of flags to implementation function.
// FlagDecodeUnnecessaryEscapes has no action, since it is done automatically
// by parsing the string as an URL. Same for FlagUppercaseEscapes and FlagRemoveEmptyQuerySeparator.
// Since maps have undefined traversing order, make a slice of ordered keys
var flagsOrder = []NormalizationFlags{
FlagLowercaseScheme,
FlagLowercaseHost,
FlagRemoveDefaultPort,
FlagRemoveDirectoryIndex,
FlagRemoveDotSegments,
FlagRemoveFragment,
FlagForceHTTP, // Must be after remove default port (because https=443/http=80)
FlagRemoveDuplicateSlashes,
FlagRemoveWWW,
FlagAddWWW,
FlagSortQuery,
FlagDecodeDWORDHost,
FlagDecodeOctalHost,
FlagDecodeHexHost,
FlagRemoveUnnecessaryHostDots,
FlagRemoveEmptyPortSeparator,
FlagRemoveTrailingSlash, // These two (add/remove trailing slash) must be last
FlagAddTrailingSlash,
}
// ... and then the map, where order is unimportant
var flags = map[NormalizationFlags]func(*url.URL){
FlagLowercaseScheme: lowercaseScheme,
FlagLowercaseHost: lowercaseHost,
FlagRemoveDefaultPort: removeDefaultPort,
FlagRemoveDirectoryIndex: removeDirectoryIndex,
FlagRemoveDotSegments: removeDotSegments,
FlagRemoveFragment: removeFragment,
FlagForceHTTP: forceHTTP,
FlagRemoveDuplicateSlashes: removeDuplicateSlashes,
FlagRemoveWWW: removeWWW,
FlagAddWWW: addWWW,
FlagSortQuery: sortQuery,
FlagDecodeDWORDHost: decodeDWORDHost,
FlagDecodeOctalHost: decodeOctalHost,
FlagDecodeHexHost: decodeHexHost,
FlagRemoveUnnecessaryHostDots: removeUnncessaryHostDots,
FlagRemoveEmptyPortSeparator: removeEmptyPortSeparator,
FlagRemoveTrailingSlash: removeTrailingSlash,
FlagAddTrailingSlash: addTrailingSlash,
}
// MustNormalizeURLString returns the normalized string, and panics if an error occurs.
// It takes an URL string as input, as well as the normalization flags.
func MustNormalizeURLString(u string, f NormalizationFlags) string {
result, e := NormalizeURLString(u, f)
if e != nil {
panic(e)
}
return result
}
// NormalizeURLString returns the normalized string, or an error if it can't be parsed into an URL object.
// It takes an URL string as input, as well as the normalization flags.
func NormalizeURLString(u string, f NormalizationFlags) (string, error) {
parsed, err := url.Parse(u)
if err != nil {
return "", err
}
if f&FlagLowercaseHost == FlagLowercaseHost {
parsed.Host = strings.ToLower(parsed.Host)
}
// The idna package doesn't fully conform to RFC 5895
// (https://tools.ietf.org/html/rfc5895), so we do it here.
// Taken from Go 1.8 cycle source, courtesy of bradfitz.
// TODO: Remove when (if?) idna package conforms to RFC 5895.
parsed.Host = width.Fold.String(parsed.Host)
parsed.Host = norm.NFC.String(parsed.Host)
if parsed.Host, err = idna.ToASCII(parsed.Host); err != nil {
return "", err
}
return NormalizeURL(parsed, f), nil
}
// NormalizeURL returns the normalized string.
// It takes a parsed URL object as input, as well as the normalization flags.
func NormalizeURL(u *url.URL, f NormalizationFlags) string {
for _, k := range flagsOrder {
if f&k == k {
flags[k](u)
}
}
return urlesc.Escape(u)
}
func lowercaseScheme(u *url.URL) {
if len(u.Scheme) > 0 {
u.Scheme = strings.ToLower(u.Scheme)
}
}
func lowercaseHost(u *url.URL) {
if len(u.Host) > 0 {
u.Host = strings.ToLower(u.Host)
}
}
func removeDefaultPort(u *url.URL) {
if len(u.Host) > 0 {
scheme := strings.ToLower(u.Scheme)
u.Host = rxPort.ReplaceAllStringFunc(u.Host, func(val string) string {
if (scheme == "http" && val == defaultHttpPort) || (scheme == "https" && val == defaultHttpsPort) {
return ""
}
return val
})
}
}
func removeTrailingSlash(u *url.URL) {
if l := len(u.Path); l > 0 {
if strings.HasSuffix(u.Path, "/") {
u.Path = u.Path[:l-1]
}
} else if l = len(u.Host); l > 0 {
if strings.HasSuffix(u.Host, "/") {
u.Host = u.Host[:l-1]
}
}
}
func addTrailingSlash(u *url.URL) {
if l := len(u.Path); l > 0 {
if !strings.HasSuffix(u.Path, "/") {
u.Path += "/"
}
} else if l = len(u.Host); l > 0 {
if !strings.HasSuffix(u.Host, "/") {
u.Host += "/"
}
}
}
func removeDotSegments(u *url.URL) {
if len(u.Path) > 0 {
var dotFree []string
var lastIsDot bool
sections := strings.Split(u.Path, "/")
for _, s := range sections {
if s == ".." {
if len(dotFree) > 0 {
dotFree = dotFree[:len(dotFree)-1]
}
} else if s != "." {
dotFree = append(dotFree, s)
}
lastIsDot = (s == "." || s == "..")
}
// Special case if host does not end with / and new path does not begin with /
u.Path = strings.Join(dotFree, "/")
if u.Host != "" && !strings.HasSuffix(u.Host, "/") && !strings.HasPrefix(u.Path, "/") {
u.Path = "/" + u.Path
}
// Special case if the last segment was a dot, make sure the path ends with a slash
if lastIsDot && !strings.HasSuffix(u.Path, "/") {
u.Path += "/"
}
}
}
func removeDirectoryIndex(u *url.URL) {
if len(u.Path) > 0 {
u.Path = rxDirIndex.ReplaceAllString(u.Path, "$1")
}
}
func removeFragment(u *url.URL) {
u.Fragment = ""
}
func forceHTTP(u *url.URL) {
if strings.ToLower(u.Scheme) == "https" {
u.Scheme = "http"
}
}
func removeDuplicateSlashes(u *url.URL) {
if len(u.Path) > 0 {
u.Path = rxDupSlashes.ReplaceAllString(u.Path, "/")
}
}
func removeWWW(u *url.URL) {
if len(u.Host) > 0 && strings.HasPrefix(strings.ToLower(u.Host), "www.") {
u.Host = u.Host[4:]
}
}
func addWWW(u *url.URL) {
if len(u.Host) > 0 && !strings.HasPrefix(strings.ToLower(u.Host), "www.") {
u.Host = "www." + u.Host
}
}
func sortQuery(u *url.URL) {
q := u.Query()
if len(q) > 0 {
arKeys := make([]string, len(q))
i := 0
for k := range q {
arKeys[i] = k
i++
}
sort.Strings(arKeys)
buf := new(bytes.Buffer)
for _, k := range arKeys {
sort.Strings(q[k])
for _, v := range q[k] {
if buf.Len() > 0 {
buf.WriteRune('&')
}
buf.WriteString(fmt.Sprintf("%s=%s", k, urlesc.QueryEscape(v)))
}
}
// Rebuild the raw query string
u.RawQuery = buf.String()
}
}
func decodeDWORDHost(u *url.URL) {
if len(u.Host) > 0 {
if matches := rxDWORDHost.FindStringSubmatch(u.Host); len(matches) > 2 {
var parts [4]int64
dword, _ := strconv.ParseInt(matches[1], 10, 0)
for i, shift := range []uint{24, 16, 8, 0} {
parts[i] = dword >> shift & 0xFF
}
u.Host = fmt.Sprintf("%d.%d.%d.%d%s", parts[0], parts[1], parts[2], parts[3], matches[2])
}
}
}
func decodeOctalHost(u *url.URL) {
if len(u.Host) > 0 {
if matches := rxOctalHost.FindStringSubmatch(u.Host); len(matches) > 5 {
var parts [4]int64
for i := 1; i <= 4; i++ {
parts[i-1], _ = strconv.ParseInt(matches[i], 8, 0)
}
u.Host = fmt.Sprintf("%d.%d.%d.%d%s", parts[0], parts[1], parts[2], parts[3], matches[5])
}
}
}
func decodeHexHost(u *url.URL) {
if len(u.Host) > 0 {
if matches := rxHexHost.FindStringSubmatch(u.Host); len(matches) > 2 {
// Conversion is safe because of regex validation
parsed, _ := strconv.ParseInt(matches[1], 16, 0)
// Set host as DWORD (base 10) encoded host
u.Host = fmt.Sprintf("%d%s", parsed, matches[2])
// The rest is the same as decoding a DWORD host
decodeDWORDHost(u)
}
}
}
func removeUnncessaryHostDots(u *url.URL) {
if len(u.Host) > 0 {
if matches := rxHostDots.FindStringSubmatch(u.Host); len(matches) > 1 {
// Trim the leading and trailing dots
u.Host = strings.Trim(matches[1], ".")
if len(matches) > 2 {
u.Host += matches[2]
}
}
}
}
func removeEmptyPortSeparator(u *url.URL) {
if len(u.Host) > 0 {
u.Host = rxEmptyPort.ReplaceAllString(u.Host, "")
}
}
language: go
go:
- 1.4.x
- 1.5.x
- 1.6.x
- 1.7.x
- 1.8.x
- tip
install:
- go build .
script:
- go test -v
Copyright (c) 2012 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
urlesc [![Build Status](https://travis-ci.org/PuerkitoBio/urlesc.svg?branch=master)](https://travis-ci.org/PuerkitoBio/urlesc) [![GoDoc](http://godoc.org/github.com/PuerkitoBio/urlesc?status.svg)](http://godoc.org/github.com/PuerkitoBio/urlesc)
======
Package urlesc implements query escaping as per RFC 3986.
It contains some parts of the net/url package, modified so as to allow
some reserved characters incorrectly escaped by net/url (see [issue 5684](https://github.com/golang/go/issues/5684)).
## Install
go get github.com/PuerkitoBio/urlesc
## License
Go license (BSD-3-Clause)
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package urlesc implements query escaping as per RFC 3986.
// It contains some parts of the net/url package, modified so as to allow
// some reserved characters incorrectly escaped by net/url.
// See https://github.com/golang/go/issues/5684
package urlesc
import (
"bytes"
"net/url"
"strings"
)
type encoding int
const (
encodePath encoding = 1 + iota
encodeUserPassword
encodeQueryComponent
encodeFragment
)
// Return true if the specified character should be escaped when
// appearing in a URL string, according to RFC 3986.
func shouldEscape(c byte, mode encoding) bool {
// §2.3 Unreserved characters (alphanum)
if 'A' <= c && c <= 'Z' || 'a' <= c && c <= 'z' || '0' <= c && c <= '9' {
return false
}
switch c {
case '-', '.', '_', '~': // §2.3 Unreserved characters (mark)
return false
// §2.2 Reserved characters (reserved)
case ':', '/', '?', '#', '[', ']', '@', // gen-delims
'!', '$', '&', '\'', '(', ')', '*', '+', ',', ';', '=': // sub-delims
// Different sections of the URL allow a few of
// the reserved characters to appear unescaped.
switch mode {
case encodePath: // §3.3
// The RFC allows sub-delims and : @.
// '/', '[' and ']' can be used to assign meaning to individual path
// segments. This package only manipulates the path as a whole,
// so we allow those as well. That leaves only ? and # to escape.
return c == '?' || c == '#'
case encodeUserPassword: // §3.2.1
// The RFC allows : and sub-delims in
// userinfo. The parsing of userinfo treats ':' as special so we must escape
// all the gen-delims.
return c == ':' || c == '/' || c == '?' || c == '#' || c == '[' || c == ']' || c == '@'
case encodeQueryComponent: // §3.4
// The RFC allows / and ?.
return c != '/' && c != '?'
case encodeFragment: // §4.1
// The RFC text is silent but the grammar allows
// everything, so escape nothing but #
return c == '#'
}
}
// Everything else must be escaped.
return true
}
// QueryEscape escapes the string so it can be safely placed
// inside a URL query.
func QueryEscape(s string) string {
return escape(s, encodeQueryComponent)
}
func escape(s string, mode encoding) string {
spaceCount, hexCount := 0, 0
for i := 0; i < len(s); i++ {
c := s[i]
if shouldEscape(c, mode) {
if c == ' ' && mode == encodeQueryComponent {
spaceCount++
} else {
hexCount++
}
}
}
if spaceCount == 0 && hexCount == 0 {
return s
}
t := make([]byte, len(s)+2*hexCount)
j := 0
for i := 0; i < len(s); i++ {
switch c := s[i]; {
case c == ' ' && mode == encodeQueryComponent:
t[j] = '+'
j++
case shouldEscape(c, mode):
t[j] = '%'
t[j+1] = "0123456789ABCDEF"[c>>4]
t[j+2] = "0123456789ABCDEF"[c&15]
j += 3
default:
t[j] = s[i]
j++
}
}
return string(t)
}
var uiReplacer = strings.NewReplacer(
"%21", "!",
"%27", "'",
"%28", "(",
"%29", ")",
"%2A", "*",
)
// unescapeUserinfo unescapes some characters that need not to be escaped as per RFC3986.
func unescapeUserinfo(s string) string {
return uiReplacer.Replace(s)
}
// Escape reassembles the URL into a valid URL string.
// The general form of the result is one of:
//
// scheme:opaque
// scheme://userinfo@host/path?query#fragment
//
// If u.Opaque is non-empty, String uses the first form;
// otherwise it uses the second form.
//
// In the second form, the following rules apply:
// - if u.Scheme is empty, scheme: is omitted.
// - if u.User is nil, userinfo@ is omitted.
// - if u.Host is empty, host/ is omitted.
// - if u.Scheme and u.Host are empty and u.User is nil,
// the entire scheme://userinfo@host/ is omitted.
// - if u.Host is non-empty and u.Path begins with a /,
// the form host/path does not add its own /.
// - if u.RawQuery is empty, ?query is omitted.
// - if u.Fragment is empty, #fragment is omitted.
func Escape(u *url.URL) string {
var buf bytes.Buffer
if u.Scheme != "" {
buf.WriteString(u.Scheme)
buf.WriteByte(':')
}
if u.Opaque != "" {
buf.WriteString(u.Opaque)
} else {
if u.Scheme != "" || u.Host != "" || u.User != nil {
buf.WriteString("//")
if ui := u.User; ui != nil {
buf.WriteString(unescapeUserinfo(ui.String()))
buf.WriteByte('@')
}
if h := u.Host; h != "" {
buf.WriteString(h)
}
}
if u.Path != "" && u.Path[0] != '/' && u.Host != "" {
buf.WriteByte('/')
}
buf.WriteString(escape(u.Path, encodePath))
}
if u.RawQuery != "" {
buf.WriteByte('?')
buf.WriteString(u.RawQuery)
}
if u.Fragment != "" {
buf.WriteByte('#')
buf.WriteString(escape(u.Fragment, encodeFragment))
}
return buf.String()
}
# Compiled Object files, Static and Dynamic libs (Shared Objects)
*.o
*.a
*.so
# Folders
_obj
_test
# Architecture specific extensions/prefixes
*.[568vq]
[568vq].out
*.cgo1.go
*.cgo2.c
_cgo_defun.c
_cgo_gotypes.go
_cgo_export.*
_testmain.go
*.exe
restful.html
*.out
tmp.prof
go-restful.test
examples/restful-basic-authentication
examples/restful-encoding-filter
examples/restful-filters
examples/restful-hello-world
examples/restful-resource-functions
examples/restful-serve-static
examples/restful-user-service
*.DS_Store
examples/restful-user-resource
examples/restful-multi-containers
examples/restful-form-handling
examples/restful-CORS-filter
examples/restful-options-filter
examples/restful-curly-router
examples/restful-cpuprofiler-service
examples/restful-pre-post-filters
curly.prof
examples/restful-NCSA-logging
examples/restful-html-template
s.html
restful-path-tail
.idea
language: go
go:
- 1.x
script: go test -v
\ No newline at end of file
# Change history of go-restful
v2.12.0
- support describing response headers (#426)
- fix openapi examples (#425)
- merge v3 fix (#422)
v2.11.1
- fix WriteError return value (#415)
v2.11.0
- allow prefix and suffix in path variable expression (#414)
v2.9.6
- support google custome verb (#413)
v2.9.5
- fix panic in Response.WriteError if err == nil
v2.9.4
- fix issue #400 , parsing mime type quality
- Route Builder added option for contentEncodingEnabled (#398)
v2.9.3
- Avoid return of 415 Unsupported Media Type when request body is empty (#396)
v2.9.2
- Reduce allocations in per-request methods to improve performance (#395)
v2.9.1
- Fix issue with default responses and invalid status code 0. (#393)
v2.9.0
- add per Route content encoding setting (overrides container setting)
v2.8.0
- add Request.QueryParameters()
- add json-iterator (via build tag)
- disable vgo module (until log is moved)
v2.7.1
- add vgo module
v2.6.1
- add JSONNewDecoderFunc to allow custom JSON Decoder usage (go 1.10+)
v2.6.0
- Make JSR 311 routing and path param processing consistent
- Adding description to RouteBuilder.Reads()
- Update example for Swagger12 and OpenAPI
2017-09-13
- added route condition functions using `.If(func)` in route building.
2017-02-16
- solved issue #304, make operation names unique
2017-01-30
[IMPORTANT] For swagger users, change your import statement to:
swagger "github.com/emicklei/go-restful-swagger12"
- moved swagger 1.2 code to go-restful-swagger12
- created TAG 2.0.0
2017-01-27
- remove defer request body close
- expose Dispatch for testing filters and Routefunctions
- swagger response model cannot be array
- created TAG 1.0.0
2016-12-22
- (API change) Remove code related to caching request content. Removes SetCacheReadEntity(doCache bool)
2016-11-26
- Default change! now use CurlyRouter (was RouterJSR311)
- Default change! no more caching of request content
- Default change! do not recover from panics
2016-09-22
- fix the DefaultRequestContentType feature
2016-02-14
- take the qualify factor of the Accept header mediatype into account when deciding the contentype of the response
- add constructors for custom entity accessors for xml and json
2015-09-27
- rename new WriteStatusAnd... to WriteHeaderAnd... for consistency
2015-09-25
- fixed problem with changing Header after WriteHeader (issue 235)
2015-09-14
- changed behavior of WriteHeader (immediate write) and WriteEntity (no status write)
- added support for custom EntityReaderWriters.
2015-08-06
- add support for reading entities from compressed request content
- use sync.Pool for compressors of http response and request body
- add Description to Parameter for documentation in Swagger UI
2015-03-20
- add configurable logging
2015-03-18
- if not specified, the Operation is derived from the Route function
2015-03-17
- expose Parameter creation functions
- make trace logger an interface
- fix OPTIONSFilter
- customize rendering of ServiceError
- JSR311 router now handles wildcards
- add Notes to Route
2014-11-27
- (api add) PrettyPrint per response. (as proposed in #167)
2014-11-12
- (api add) ApiVersion(.) for documentation in Swagger UI
2014-11-10
- (api change) struct fields tagged with "description" show up in Swagger UI
2014-10-31
- (api change) ReturnsError -> Returns
- (api add) RouteBuilder.Do(aBuilder) for DRY use of RouteBuilder
- fix swagger nested structs
- sort Swagger response messages by code
2014-10-23
- (api add) ReturnsError allows you to document Http codes in swagger
- fixed problem with greedy CurlyRouter
- (api add) Access-Control-Max-Age in CORS
- add tracing functionality (injectable) for debugging purposes
- support JSON parse 64bit int
- fix empty parameters for swagger
- WebServicesUrl is now optional for swagger
- fixed duplicate AccessControlAllowOrigin in CORS
- (api change) expose ServeMux in container
- (api add) added AllowedDomains in CORS
- (api add) ParameterNamed for detailed documentation
2014-04-16
- (api add) expose constructor of Request for testing.
2014-06-27
- (api add) ParameterNamed gives access to a Parameter definition and its data (for further specification).
- (api add) SetCacheReadEntity allow scontrol over whether or not the request body is being cached (default true for compatibility reasons).
2014-07-03
- (api add) CORS can be configured with a list of allowed domains
2014-03-12
- (api add) Route path parameters can use wildcard or regular expressions. (requires CurlyRouter)
2014-02-26
- (api add) Request now provides information about the matched Route, see method SelectedRoutePath
2014-02-17
- (api change) renamed parameter constants (go-lint checks)
2014-01-10
- (api add) support for CloseNotify, see http://golang.org/pkg/net/http/#CloseNotifier
2014-01-07
- (api change) Write* methods in Response now return the error or nil.
- added example of serving HTML from a Go template.
- fixed comparing Allowed headers in CORS (is now case-insensitive)
2013-11-13
- (api add) Response knows how many bytes are written to the response body.
2013-10-29
- (api add) RecoverHandler(handler RecoverHandleFunction) to change how panic recovery is handled. Default behavior is to log and return a stacktrace. This may be a security issue as it exposes sourcecode information.
2013-10-04
- (api add) Response knows what HTTP status has been written
- (api add) Request can have attributes (map of string->interface, also called request-scoped variables
2013-09-12
- (api change) Router interface simplified
- Implemented CurlyRouter, a Router that does not use|allow regular expressions in paths
2013-08-05
- add OPTIONS support
- add CORS support
2013-08-27
- fixed some reported issues (see github)
- (api change) deprecated use of WriteError; use WriteErrorString instead
2014-04-15
- (fix) v1.0.1 tag: fix Issue 111: WriteErrorString
2013-08-08
- (api add) Added implementation Container: a WebServices collection with its own http.ServeMux allowing multiple endpoints per program. Existing uses of go-restful will register their services to the DefaultContainer.
- (api add) the swagger package has be extended to have a UI per container.
- if panic is detected then a small stack trace is printed (thanks to runner-mei)
- (api add) WriteErrorString to Response
Important API changes:
- (api remove) package variable DoNotRecover no longer works ; use restful.DefaultContainer.DoNotRecover(true) instead.
- (api remove) package variable EnableContentEncoding no longer works ; use restful.DefaultContainer.EnableContentEncoding(true) instead.
2013-07-06
- (api add) Added support for response encoding (gzip and deflate(zlib)). This feature is disabled on default (for backwards compatibility). Use restful.EnableContentEncoding = true in your initialization to enable this feature.
2013-06-19
- (improve) DoNotRecover option, moved request body closer, improved ReadEntity
2013-06-03
- (api change) removed Dispatcher interface, hide PathExpression
- changed receiver names of type functions to be more idiomatic Go
2013-06-02
- (optimize) Cache the RegExp compilation of Paths.
2013-05-22
- (api add) Added support for request/response filter functions
2013-05-18
- (api add) Added feature to change the default Http Request Dispatch function (travis cline)
- (api change) Moved Swagger Webservice to swagger package (see example restful-user)
[2012-11-14 .. 2013-05-18>
- See https://github.com/emicklei/go-restful/commits
2012-11-14
- Initial commit
Copyright (c) 2012,2013 Ernest Micklei
MIT License
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
\ No newline at end of file
all: test
test:
go test -v .
ex:
cd examples && ls *.go | xargs go build -o /tmp/ignore
\ No newline at end of file
go-restful
==========
package for building REST-style Web Services using Google Go
[![Build Status](https://travis-ci.org/emicklei/go-restful.png)](https://travis-ci.org/emicklei/go-restful)
[![Go Report Card](https://goreportcard.com/badge/github.com/emicklei/go-restful)](https://goreportcard.com/report/github.com/emicklei/go-restful)
[![GoDoc](https://godoc.org/github.com/emicklei/go-restful?status.svg)](https://godoc.org/github.com/emicklei/go-restful)
- [Code examples](https://github.com/emicklei/go-restful/tree/master/examples)
REST asks developers to use HTTP methods explicitly and in a way that's consistent with the protocol definition. This basic REST design principle establishes a one-to-one mapping between create, read, update, and delete (CRUD) operations and HTTP methods. According to this mapping:
- GET = Retrieve a representation of a resource
- POST = Create if you are sending content to the server to create a subordinate of the specified resource collection, using some server-side algorithm.
- PUT = Create if you are sending the full content of the specified resource (URI).
- PUT = Update if you are updating the full content of the specified resource.
- DELETE = Delete if you are requesting the server to delete the resource
- PATCH = Update partial content of a resource
- OPTIONS = Get information about the communication options for the request URI
### Usage
#### Without Go Modules
All versions up to `v2.*.*` (on the master) are not supporting Go modules.
```
import (
restful "github.com/emicklei/go-restful"
)
```
#### Using Go Modules
As of version `v3.0.0` (on the v3 branch), this package supports Go modules.
```
import (
restful "github.com/emicklei/go-restful/v3"
)
```
### Example
```Go
ws := new(restful.WebService)
ws.
Path("/users").
Consumes(restful.MIME_XML, restful.MIME_JSON).
Produces(restful.MIME_JSON, restful.MIME_XML)
ws.Route(ws.GET("/{user-id}").To(u.findUser).
Doc("get a user").
Param(ws.PathParameter("user-id", "identifier of the user").DataType("string")).
Writes(User{}))
...
func (u UserResource) findUser(request *restful.Request, response *restful.Response) {
id := request.PathParameter("user-id")
...
}
```
[Full API of a UserResource](https://github.com/emicklei/go-restful/tree/master/examples/restful-user-resource.go)
### Features
- Routes for request &#8594; function mapping with path parameter (e.g. {id} but also prefix_{var} and {var}_suffix) support
- Configurable router:
- (default) Fast routing algorithm that allows static elements, [google custom method](https://cloud.google.com/apis/design/custom_methods), regular expressions and dynamic parameters in the URL path (e.g. /resource/name:customVerb, /meetings/{id} or /static/{subpath:*})
- Routing algorithm after [JSR311](http://jsr311.java.net/nonav/releases/1.1/spec/spec.html) that is implemented using (but does **not** accept) regular expressions
- Request API for reading structs from JSON/XML and accesing parameters (path,query,header)
- Response API for writing structs to JSON/XML and setting headers
- Customizable encoding using EntityReaderWriter registration
- Filters for intercepting the request &#8594; response flow on Service or Route level
- Request-scoped variables using attributes
- Containers for WebServices on different HTTP endpoints
- Content encoding (gzip,deflate) of request and response payloads
- Automatic responses on OPTIONS (using a filter)
- Automatic CORS request handling (using a filter)
- API declaration for Swagger UI ([go-restful-openapi](https://github.com/emicklei/go-restful-openapi), see [go-restful-swagger12](https://github.com/emicklei/go-restful-swagger12))
- Panic recovery to produce HTTP 500, customizable using RecoverHandler(...)
- Route errors produce HTTP 404/405/406/415 errors, customizable using ServiceErrorHandler(...)
- Configurable (trace) logging
- Customizable gzip/deflate readers and writers using CompressorProvider registration
## How to customize
There are several hooks to customize the behavior of the go-restful package.
- Router algorithm
- Panic recovery
- JSON decoder
- Trace logging
- Compression
- Encoders for other serializers
- Use [jsoniter](https://github.com/json-iterator/go) by build this package using a tag, e.g. `go build -tags=jsoniter .`
TODO: write examples of these.
## Resources
- [Example posted on blog](http://ernestmicklei.com/2012/11/go-restful-first-working-example/)
- [Design explained on blog](http://ernestmicklei.com/2012/11/go-restful-api-design/)
- [sourcegraph](https://sourcegraph.com/github.com/emicklei/go-restful)
- [showcase: Zazkia - tcp proxy for testing resiliency](https://github.com/emicklei/zazkia)
- [showcase: Mora - MongoDB REST Api server](https://github.com/emicklei/mora)
Type ```git shortlog -s``` for a full list of contributors.
© 2012 - 2020, http://ernestmicklei.com. MIT License. Contributions are welcome.
#go test -run=none -file bench_test.go -test.bench . -cpuprofile=bench_test.out
go test -c
./go-restful.test -test.run=none -test.cpuprofile=tmp.prof -test.bench=BenchmarkMany
./go-restful.test -test.run=none -test.cpuprofile=curly.prof -test.bench=BenchmarkManyCurly
#go tool pprof go-restful.test tmp.prof
go tool pprof go-restful.test curly.prof
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"bufio"
"compress/gzip"
"compress/zlib"
"errors"
"io"
"net"
"net/http"
"strings"
)
// OBSOLETE : use restful.DefaultContainer.EnableContentEncoding(true) to change this setting.
var EnableContentEncoding = false
// CompressingResponseWriter is a http.ResponseWriter that can perform content encoding (gzip and zlib)
type CompressingResponseWriter struct {
writer http.ResponseWriter
compressor io.WriteCloser
encoding string
}
// Header is part of http.ResponseWriter interface
func (c *CompressingResponseWriter) Header() http.Header {
return c.writer.Header()
}
// WriteHeader is part of http.ResponseWriter interface
func (c *CompressingResponseWriter) WriteHeader(status int) {
c.writer.WriteHeader(status)
}
// Write is part of http.ResponseWriter interface
// It is passed through the compressor
func (c *CompressingResponseWriter) Write(bytes []byte) (int, error) {
if c.isCompressorClosed() {
return -1, errors.New("Compressing error: tried to write data using closed compressor")
}
return c.compressor.Write(bytes)
}
// CloseNotify is part of http.CloseNotifier interface
func (c *CompressingResponseWriter) CloseNotify() <-chan bool {
return c.writer.(http.CloseNotifier).CloseNotify()
}
// Close the underlying compressor
func (c *CompressingResponseWriter) Close() error {
if c.isCompressorClosed() {
return errors.New("Compressing error: tried to close already closed compressor")
}
c.compressor.Close()
if ENCODING_GZIP == c.encoding {
currentCompressorProvider.ReleaseGzipWriter(c.compressor.(*gzip.Writer))
}
if ENCODING_DEFLATE == c.encoding {
currentCompressorProvider.ReleaseZlibWriter(c.compressor.(*zlib.Writer))
}
// gc hint needed?
c.compressor = nil
return nil
}
func (c *CompressingResponseWriter) isCompressorClosed() bool {
return nil == c.compressor
}
// Hijack implements the Hijacker interface
// This is especially useful when combining Container.EnabledContentEncoding
// in combination with websockets (for instance gorilla/websocket)
func (c *CompressingResponseWriter) Hijack() (net.Conn, *bufio.ReadWriter, error) {
hijacker, ok := c.writer.(http.Hijacker)
if !ok {
return nil, nil, errors.New("ResponseWriter doesn't support Hijacker interface")
}
return hijacker.Hijack()
}
// WantsCompressedResponse reads the Accept-Encoding header to see if and which encoding is requested.
func wantsCompressedResponse(httpRequest *http.Request) (bool, string) {
header := httpRequest.Header.Get(HEADER_AcceptEncoding)
gi := strings.Index(header, ENCODING_GZIP)
zi := strings.Index(header, ENCODING_DEFLATE)
// use in order of appearance
if gi == -1 {
return zi != -1, ENCODING_DEFLATE
} else if zi == -1 {
return gi != -1, ENCODING_GZIP
} else {
if gi < zi {
return true, ENCODING_GZIP
}
return true, ENCODING_DEFLATE
}
}
// NewCompressingResponseWriter create a CompressingResponseWriter for a known encoding = {gzip,deflate}
func NewCompressingResponseWriter(httpWriter http.ResponseWriter, encoding string) (*CompressingResponseWriter, error) {
httpWriter.Header().Set(HEADER_ContentEncoding, encoding)
c := new(CompressingResponseWriter)
c.writer = httpWriter
var err error
if ENCODING_GZIP == encoding {
w := currentCompressorProvider.AcquireGzipWriter()
w.Reset(httpWriter)
c.compressor = w
c.encoding = ENCODING_GZIP
} else if ENCODING_DEFLATE == encoding {
w := currentCompressorProvider.AcquireZlibWriter()
w.Reset(httpWriter)
c.compressor = w
c.encoding = ENCODING_DEFLATE
} else {
return nil, errors.New("Unknown encoding:" + encoding)
}
return c, err
}
package restful
// Copyright 2015 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"compress/gzip"
"compress/zlib"
)
// BoundedCachedCompressors is a CompressorProvider that uses a cache with a fixed amount
// of writers and readers (resources).
// If a new resource is acquired and all are in use, it will return a new unmanaged resource.
type BoundedCachedCompressors struct {
gzipWriters chan *gzip.Writer
gzipReaders chan *gzip.Reader
zlibWriters chan *zlib.Writer
writersCapacity int
readersCapacity int
}
// NewBoundedCachedCompressors returns a new, with filled cache, BoundedCachedCompressors.
func NewBoundedCachedCompressors(writersCapacity, readersCapacity int) *BoundedCachedCompressors {
b := &BoundedCachedCompressors{
gzipWriters: make(chan *gzip.Writer, writersCapacity),
gzipReaders: make(chan *gzip.Reader, readersCapacity),
zlibWriters: make(chan *zlib.Writer, writersCapacity),
writersCapacity: writersCapacity,
readersCapacity: readersCapacity,
}
for ix := 0; ix < writersCapacity; ix++ {
b.gzipWriters <- newGzipWriter()
b.zlibWriters <- newZlibWriter()
}
for ix := 0; ix < readersCapacity; ix++ {
b.gzipReaders <- newGzipReader()
}
return b
}
// AcquireGzipWriter returns an resettable *gzip.Writer. Needs to be released.
func (b *BoundedCachedCompressors) AcquireGzipWriter() *gzip.Writer {
var writer *gzip.Writer
select {
case writer, _ = <-b.gzipWriters:
default:
// return a new unmanaged one
writer = newGzipWriter()
}
return writer
}
// ReleaseGzipWriter accepts a writer (does not have to be one that was cached)
// only when the cache has room for it. It will ignore it otherwise.
func (b *BoundedCachedCompressors) ReleaseGzipWriter(w *gzip.Writer) {
// forget the unmanaged ones
if len(b.gzipWriters) < b.writersCapacity {
b.gzipWriters <- w
}
}
// AcquireGzipReader returns a *gzip.Reader. Needs to be released.
func (b *BoundedCachedCompressors) AcquireGzipReader() *gzip.Reader {
var reader *gzip.Reader
select {
case reader, _ = <-b.gzipReaders:
default:
// return a new unmanaged one
reader = newGzipReader()
}
return reader
}
// ReleaseGzipReader accepts a reader (does not have to be one that was cached)
// only when the cache has room for it. It will ignore it otherwise.
func (b *BoundedCachedCompressors) ReleaseGzipReader(r *gzip.Reader) {
// forget the unmanaged ones
if len(b.gzipReaders) < b.readersCapacity {
b.gzipReaders <- r
}
}
// AcquireZlibWriter returns an resettable *zlib.Writer. Needs to be released.
func (b *BoundedCachedCompressors) AcquireZlibWriter() *zlib.Writer {
var writer *zlib.Writer
select {
case writer, _ = <-b.zlibWriters:
default:
// return a new unmanaged one
writer = newZlibWriter()
}
return writer
}
// ReleaseZlibWriter accepts a writer (does not have to be one that was cached)
// only when the cache has room for it. It will ignore it otherwise.
func (b *BoundedCachedCompressors) ReleaseZlibWriter(w *zlib.Writer) {
// forget the unmanaged ones
if len(b.zlibWriters) < b.writersCapacity {
b.zlibWriters <- w
}
}
package restful
// Copyright 2015 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"bytes"
"compress/gzip"
"compress/zlib"
"sync"
)
// SyncPoolCompessors is a CompressorProvider that use the standard sync.Pool.
type SyncPoolCompessors struct {
GzipWriterPool *sync.Pool
GzipReaderPool *sync.Pool
ZlibWriterPool *sync.Pool
}
// NewSyncPoolCompessors returns a new ("empty") SyncPoolCompessors.
func NewSyncPoolCompessors() *SyncPoolCompessors {
return &SyncPoolCompessors{
GzipWriterPool: &sync.Pool{
New: func() interface{} { return newGzipWriter() },
},
GzipReaderPool: &sync.Pool{
New: func() interface{} { return newGzipReader() },
},
ZlibWriterPool: &sync.Pool{
New: func() interface{} { return newZlibWriter() },
},
}
}
func (s *SyncPoolCompessors) AcquireGzipWriter() *gzip.Writer {
return s.GzipWriterPool.Get().(*gzip.Writer)
}
func (s *SyncPoolCompessors) ReleaseGzipWriter(w *gzip.Writer) {
s.GzipWriterPool.Put(w)
}
func (s *SyncPoolCompessors) AcquireGzipReader() *gzip.Reader {
return s.GzipReaderPool.Get().(*gzip.Reader)
}
func (s *SyncPoolCompessors) ReleaseGzipReader(r *gzip.Reader) {
s.GzipReaderPool.Put(r)
}
func (s *SyncPoolCompessors) AcquireZlibWriter() *zlib.Writer {
return s.ZlibWriterPool.Get().(*zlib.Writer)
}
func (s *SyncPoolCompessors) ReleaseZlibWriter(w *zlib.Writer) {
s.ZlibWriterPool.Put(w)
}
func newGzipWriter() *gzip.Writer {
// create with an empty bytes writer; it will be replaced before using the gzipWriter
writer, err := gzip.NewWriterLevel(new(bytes.Buffer), gzip.BestSpeed)
if err != nil {
panic(err.Error())
}
return writer
}
func newGzipReader() *gzip.Reader {
// create with an empty reader (but with GZIP header); it will be replaced before using the gzipReader
// we can safely use currentCompressProvider because it is set on package initialization.
w := currentCompressorProvider.AcquireGzipWriter()
defer currentCompressorProvider.ReleaseGzipWriter(w)
b := new(bytes.Buffer)
w.Reset(b)
w.Flush()
w.Close()
reader, err := gzip.NewReader(bytes.NewReader(b.Bytes()))
if err != nil {
panic(err.Error())
}
return reader
}
func newZlibWriter() *zlib.Writer {
writer, err := zlib.NewWriterLevel(new(bytes.Buffer), gzip.BestSpeed)
if err != nil {
panic(err.Error())
}
return writer
}
package restful
// Copyright 2015 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"compress/gzip"
"compress/zlib"
)
// CompressorProvider describes a component that can provider compressors for the std methods.
type CompressorProvider interface {
// Returns a *gzip.Writer which needs to be released later.
// Before using it, call Reset().
AcquireGzipWriter() *gzip.Writer
// Releases an acquired *gzip.Writer.
ReleaseGzipWriter(w *gzip.Writer)
// Returns a *gzip.Reader which needs to be released later.
AcquireGzipReader() *gzip.Reader
// Releases an acquired *gzip.Reader.
ReleaseGzipReader(w *gzip.Reader)
// Returns a *zlib.Writer which needs to be released later.
// Before using it, call Reset().
AcquireZlibWriter() *zlib.Writer
// Releases an acquired *zlib.Writer.
ReleaseZlibWriter(w *zlib.Writer)
}
// DefaultCompressorProvider is the actual provider of compressors (zlib or gzip).
var currentCompressorProvider CompressorProvider
func init() {
currentCompressorProvider = NewSyncPoolCompessors()
}
// CurrentCompressorProvider returns the current CompressorProvider.
// It is initialized using a SyncPoolCompessors.
func CurrentCompressorProvider() CompressorProvider {
return currentCompressorProvider
}
// SetCompressorProvider sets the actual provider of compressors (zlib or gzip).
func SetCompressorProvider(p CompressorProvider) {
if p == nil {
panic("cannot set compressor provider to nil")
}
currentCompressorProvider = p
}
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
const (
MIME_XML = "application/xml" // Accept or Content-Type used in Consumes() and/or Produces()
MIME_JSON = "application/json" // Accept or Content-Type used in Consumes() and/or Produces()
MIME_OCTET = "application/octet-stream" // If Content-Type is not present in request, use the default
HEADER_Allow = "Allow"
HEADER_Accept = "Accept"
HEADER_Origin = "Origin"
HEADER_ContentType = "Content-Type"
HEADER_LastModified = "Last-Modified"
HEADER_AcceptEncoding = "Accept-Encoding"
HEADER_ContentEncoding = "Content-Encoding"
HEADER_AccessControlExposeHeaders = "Access-Control-Expose-Headers"
HEADER_AccessControlRequestMethod = "Access-Control-Request-Method"
HEADER_AccessControlRequestHeaders = "Access-Control-Request-Headers"
HEADER_AccessControlAllowMethods = "Access-Control-Allow-Methods"
HEADER_AccessControlAllowOrigin = "Access-Control-Allow-Origin"
HEADER_AccessControlAllowCredentials = "Access-Control-Allow-Credentials"
HEADER_AccessControlAllowHeaders = "Access-Control-Allow-Headers"
HEADER_AccessControlMaxAge = "Access-Control-Max-Age"
ENCODING_GZIP = "gzip"
ENCODING_DEFLATE = "deflate"
)
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"bytes"
"errors"
"fmt"
"net/http"
"os"
"runtime"
"strings"
"sync"
"github.com/emicklei/go-restful/log"
)
// Container holds a collection of WebServices and a http.ServeMux to dispatch http requests.
// The requests are further dispatched to routes of WebServices using a RouteSelector
type Container struct {
webServicesLock sync.RWMutex
webServices []*WebService
ServeMux *http.ServeMux
isRegisteredOnRoot bool
containerFilters []FilterFunction
doNotRecover bool // default is true
recoverHandleFunc RecoverHandleFunction
serviceErrorHandleFunc ServiceErrorHandleFunction
router RouteSelector // default is a CurlyRouter (RouterJSR311 is a slower alternative)
contentEncodingEnabled bool // default is false
}
// NewContainer creates a new Container using a new ServeMux and default router (CurlyRouter)
func NewContainer() *Container {
return &Container{
webServices: []*WebService{},
ServeMux: http.NewServeMux(),
isRegisteredOnRoot: false,
containerFilters: []FilterFunction{},
doNotRecover: true,
recoverHandleFunc: logStackOnRecover,
serviceErrorHandleFunc: writeServiceError,
router: CurlyRouter{},
contentEncodingEnabled: false}
}
// RecoverHandleFunction declares functions that can be used to handle a panic situation.
// The first argument is what recover() returns. The second must be used to communicate an error response.
type RecoverHandleFunction func(interface{}, http.ResponseWriter)
// RecoverHandler changes the default function (logStackOnRecover) to be called
// when a panic is detected. DoNotRecover must be have its default value (=false).
func (c *Container) RecoverHandler(handler RecoverHandleFunction) {
c.recoverHandleFunc = handler
}
// ServiceErrorHandleFunction declares functions that can be used to handle a service error situation.
// The first argument is the service error, the second is the request that resulted in the error and
// the third must be used to communicate an error response.
type ServiceErrorHandleFunction func(ServiceError, *Request, *Response)
// ServiceErrorHandler changes the default function (writeServiceError) to be called
// when a ServiceError is detected.
func (c *Container) ServiceErrorHandler(handler ServiceErrorHandleFunction) {
c.serviceErrorHandleFunc = handler
}
// DoNotRecover controls whether panics will be caught to return HTTP 500.
// If set to true, Route functions are responsible for handling any error situation.
// Default value is true.
func (c *Container) DoNotRecover(doNot bool) {
c.doNotRecover = doNot
}
// Router changes the default Router (currently CurlyRouter)
func (c *Container) Router(aRouter RouteSelector) {
c.router = aRouter
}
// EnableContentEncoding (default=false) allows for GZIP or DEFLATE encoding of responses.
func (c *Container) EnableContentEncoding(enabled bool) {
c.contentEncodingEnabled = enabled
}
// Add a WebService to the Container. It will detect duplicate root paths and exit in that case.
func (c *Container) Add(service *WebService) *Container {
c.webServicesLock.Lock()
defer c.webServicesLock.Unlock()
// if rootPath was not set then lazy initialize it
if len(service.rootPath) == 0 {
service.Path("/")
}
// cannot have duplicate root paths
for _, each := range c.webServices {
if each.RootPath() == service.RootPath() {
log.Printf("WebService with duplicate root path detected:['%v']", each)
os.Exit(1)
}
}
// If not registered on root then add specific mapping
if !c.isRegisteredOnRoot {
c.isRegisteredOnRoot = c.addHandler(service, c.ServeMux)
}
c.webServices = append(c.webServices, service)
return c
}
// addHandler may set a new HandleFunc for the serveMux
// this function must run inside the critical region protected by the webServicesLock.
// returns true if the function was registered on root ("/")
func (c *Container) addHandler(service *WebService, serveMux *http.ServeMux) bool {
pattern := fixedPrefixPath(service.RootPath())
// check if root path registration is needed
if "/" == pattern || "" == pattern {
serveMux.HandleFunc("/", c.dispatch)
return true
}
// detect if registration already exists
alreadyMapped := false
for _, each := range c.webServices {
if each.RootPath() == service.RootPath() {
alreadyMapped = true
break
}
}
if !alreadyMapped {
serveMux.HandleFunc(pattern, c.dispatch)
if !strings.HasSuffix(pattern, "/") {
serveMux.HandleFunc(pattern+"/", c.dispatch)
}
}
return false
}
func (c *Container) Remove(ws *WebService) error {
if c.ServeMux == http.DefaultServeMux {
errMsg := fmt.Sprintf("cannot remove a WebService from a Container using the DefaultServeMux: ['%v']", ws)
log.Print(errMsg)
return errors.New(errMsg)
}
c.webServicesLock.Lock()
defer c.webServicesLock.Unlock()
// build a new ServeMux and re-register all WebServices
newServeMux := http.NewServeMux()
newServices := []*WebService{}
newIsRegisteredOnRoot := false
for _, each := range c.webServices {
if each.rootPath != ws.rootPath {
// If not registered on root then add specific mapping
if !newIsRegisteredOnRoot {
newIsRegisteredOnRoot = c.addHandler(each, newServeMux)
}
newServices = append(newServices, each)
}
}
c.webServices, c.ServeMux, c.isRegisteredOnRoot = newServices, newServeMux, newIsRegisteredOnRoot
return nil
}
// logStackOnRecover is the default RecoverHandleFunction and is called
// when DoNotRecover is false and the recoverHandleFunc is not set for the container.
// Default implementation logs the stacktrace and writes the stacktrace on the response.
// This may be a security issue as it exposes sourcecode information.
func logStackOnRecover(panicReason interface{}, httpWriter http.ResponseWriter) {
var buffer bytes.Buffer
buffer.WriteString(fmt.Sprintf("recover from panic situation: - %v\r\n", panicReason))
for i := 2; ; i += 1 {
_, file, line, ok := runtime.Caller(i)
if !ok {
break
}
buffer.WriteString(fmt.Sprintf(" %s:%d\r\n", file, line))
}
log.Print(buffer.String())
httpWriter.WriteHeader(http.StatusInternalServerError)
httpWriter.Write(buffer.Bytes())
}
// writeServiceError is the default ServiceErrorHandleFunction and is called
// when a ServiceError is returned during route selection. Default implementation
// calls resp.WriteErrorString(err.Code, err.Message)
func writeServiceError(err ServiceError, req *Request, resp *Response) {
resp.WriteErrorString(err.Code, err.Message)
}
// Dispatch the incoming Http Request to a matching WebService.
func (c *Container) Dispatch(httpWriter http.ResponseWriter, httpRequest *http.Request) {
if httpWriter == nil {
panic("httpWriter cannot be nil")
}
if httpRequest == nil {
panic("httpRequest cannot be nil")
}
c.dispatch(httpWriter, httpRequest)
}
// Dispatch the incoming Http Request to a matching WebService.
func (c *Container) dispatch(httpWriter http.ResponseWriter, httpRequest *http.Request) {
writer := httpWriter
// CompressingResponseWriter should be closed after all operations are done
defer func() {
if compressWriter, ok := writer.(*CompressingResponseWriter); ok {
compressWriter.Close()
}
}()
// Instal panic recovery unless told otherwise
if !c.doNotRecover { // catch all for 500 response
defer func() {
if r := recover(); r != nil {
c.recoverHandleFunc(r, writer)
return
}
}()
}
// Find best match Route ; err is non nil if no match was found
var webService *WebService
var route *Route
var err error
func() {
c.webServicesLock.RLock()
defer c.webServicesLock.RUnlock()
webService, route, err = c.router.SelectRoute(
c.webServices,
httpRequest)
}()
// Detect if compression is needed
// assume without compression, test for override
contentEncodingEnabled := c.contentEncodingEnabled
if route != nil && route.contentEncodingEnabled != nil {
contentEncodingEnabled = *route.contentEncodingEnabled
}
if contentEncodingEnabled {
doCompress, encoding := wantsCompressedResponse(httpRequest)
if doCompress {
var err error
writer, err = NewCompressingResponseWriter(httpWriter, encoding)
if err != nil {
log.Print("unable to install compressor: ", err)
httpWriter.WriteHeader(http.StatusInternalServerError)
return
}
}
}
if err != nil {
// a non-200 response has already been written
// run container filters anyway ; they should not touch the response...
chain := FilterChain{Filters: c.containerFilters, Target: func(req *Request, resp *Response) {
switch err.(type) {
case ServiceError:
ser := err.(ServiceError)
c.serviceErrorHandleFunc(ser, req, resp)
}
// TODO
}}
chain.ProcessFilter(NewRequest(httpRequest), NewResponse(writer))
return
}
pathProcessor, routerProcessesPath := c.router.(PathProcessor)
if !routerProcessesPath {
pathProcessor = defaultPathProcessor{}
}
pathParams := pathProcessor.ExtractParameters(route, webService, httpRequest.URL.Path)
wrappedRequest, wrappedResponse := route.wrapRequestResponse(writer, httpRequest, pathParams)
// pass through filters (if any)
if size := len(c.containerFilters) + len(webService.filters) + len(route.Filters); size > 0 {
// compose filter chain
allFilters := make([]FilterFunction, 0, size)
allFilters = append(allFilters, c.containerFilters...)
allFilters = append(allFilters, webService.filters...)
allFilters = append(allFilters, route.Filters...)
chain := FilterChain{Filters: allFilters, Target: route.Function}
chain.ProcessFilter(wrappedRequest, wrappedResponse)
} else {
// no filters, handle request by route
route.Function(wrappedRequest, wrappedResponse)
}
}
// fixedPrefixPath returns the fixed part of the partspec ; it may include template vars {}
func fixedPrefixPath(pathspec string) string {
varBegin := strings.Index(pathspec, "{")
if -1 == varBegin {
return pathspec
}
return pathspec[:varBegin]
}
// ServeHTTP implements net/http.Handler therefore a Container can be a Handler in a http.Server
func (c *Container) ServeHTTP(httpwriter http.ResponseWriter, httpRequest *http.Request) {
c.ServeMux.ServeHTTP(httpwriter, httpRequest)
}
// Handle registers the handler for the given pattern. If a handler already exists for pattern, Handle panics.
func (c *Container) Handle(pattern string, handler http.Handler) {
c.ServeMux.Handle(pattern, handler)
}
// HandleWithFilter registers the handler for the given pattern.
// Container's filter chain is applied for handler.
// If a handler already exists for pattern, HandleWithFilter panics.
func (c *Container) HandleWithFilter(pattern string, handler http.Handler) {
f := func(httpResponse http.ResponseWriter, httpRequest *http.Request) {
if len(c.containerFilters) == 0 {
handler.ServeHTTP(httpResponse, httpRequest)
return
}
chain := FilterChain{Filters: c.containerFilters, Target: func(req *Request, resp *Response) {
handler.ServeHTTP(resp, req.Request)
}}
chain.ProcessFilter(NewRequest(httpRequest), NewResponse(httpResponse))
}
c.Handle(pattern, http.HandlerFunc(f))
}
// Filter appends a container FilterFunction. These are called before dispatching
// a http.Request to a WebService from the container
func (c *Container) Filter(filter FilterFunction) {
c.containerFilters = append(c.containerFilters, filter)
}
// RegisteredWebServices returns the collections of added WebServices
func (c *Container) RegisteredWebServices() []*WebService {
c.webServicesLock.RLock()
defer c.webServicesLock.RUnlock()
result := make([]*WebService, len(c.webServices))
for ix := range c.webServices {
result[ix] = c.webServices[ix]
}
return result
}
// computeAllowedMethods returns a list of HTTP methods that are valid for a Request
func (c *Container) computeAllowedMethods(req *Request) []string {
// Go through all RegisteredWebServices() and all its Routes to collect the options
methods := []string{}
requestPath := req.Request.URL.Path
for _, ws := range c.RegisteredWebServices() {
matches := ws.pathExpr.Matcher.FindStringSubmatch(requestPath)
if matches != nil {
finalMatch := matches[len(matches)-1]
for _, rt := range ws.Routes() {
matches := rt.pathExpr.Matcher.FindStringSubmatch(finalMatch)
if matches != nil {
lastMatch := matches[len(matches)-1]
if lastMatch == "" || lastMatch == "/" { // do not include if value is neither empty nor ‘/’.
methods = append(methods, rt.Method)
}
}
}
}
}
// methods = append(methods, "OPTIONS") not sure about this
return methods
}
// newBasicRequestResponse creates a pair of Request,Response from its http versions.
// It is basic because no parameter or (produces) content-type information is given.
func newBasicRequestResponse(httpWriter http.ResponseWriter, httpRequest *http.Request) (*Request, *Response) {
resp := NewResponse(httpWriter)
resp.requestAccept = httpRequest.Header.Get(HEADER_Accept)
return NewRequest(httpRequest), resp
}
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"regexp"
"strconv"
"strings"
)
// CrossOriginResourceSharing is used to create a Container Filter that implements CORS.
// Cross-origin resource sharing (CORS) is a mechanism that allows JavaScript on a web page
// to make XMLHttpRequests to another domain, not the domain the JavaScript originated from.
//
// http://en.wikipedia.org/wiki/Cross-origin_resource_sharing
// http://enable-cors.org/server.html
// http://www.html5rocks.com/en/tutorials/cors/#toc-handling-a-not-so-simple-request
type CrossOriginResourceSharing struct {
ExposeHeaders []string // list of Header names
AllowedHeaders []string // list of Header names
AllowedDomains []string // list of allowed values for Http Origin. An allowed value can be a regular expression to support subdomain matching. If empty all are allowed.
AllowedMethods []string
MaxAge int // number of seconds before requiring new Options request
CookiesAllowed bool
Container *Container
allowedOriginPatterns []*regexp.Regexp // internal field for origin regexp check.
}
// Filter is a filter function that implements the CORS flow as documented on http://enable-cors.org/server.html
// and http://www.html5rocks.com/static/images/cors_server_flowchart.png
func (c CrossOriginResourceSharing) Filter(req *Request, resp *Response, chain *FilterChain) {
origin := req.Request.Header.Get(HEADER_Origin)
if len(origin) == 0 {
if trace {
traceLogger.Print("no Http header Origin set")
}
chain.ProcessFilter(req, resp)
return
}
if !c.isOriginAllowed(origin) { // check whether this origin is allowed
if trace {
traceLogger.Printf("HTTP Origin:%s is not part of %v, neither matches any part of %v", origin, c.AllowedDomains, c.allowedOriginPatterns)
}
chain.ProcessFilter(req, resp)
return
}
if req.Request.Method != "OPTIONS" {
c.doActualRequest(req, resp)
chain.ProcessFilter(req, resp)
return
}
if acrm := req.Request.Header.Get(HEADER_AccessControlRequestMethod); acrm != "" {
c.doPreflightRequest(req, resp)
} else {
c.doActualRequest(req, resp)
chain.ProcessFilter(req, resp)
return
}
}
func (c CrossOriginResourceSharing) doActualRequest(req *Request, resp *Response) {
c.setOptionsHeaders(req, resp)
// continue processing the response
}
func (c *CrossOriginResourceSharing) doPreflightRequest(req *Request, resp *Response) {
if len(c.AllowedMethods) == 0 {
if c.Container == nil {
c.AllowedMethods = DefaultContainer.computeAllowedMethods(req)
} else {
c.AllowedMethods = c.Container.computeAllowedMethods(req)
}
}
acrm := req.Request.Header.Get(HEADER_AccessControlRequestMethod)
if !c.isValidAccessControlRequestMethod(acrm, c.AllowedMethods) {
if trace {
traceLogger.Printf("Http header %s:%s is not in %v",
HEADER_AccessControlRequestMethod,
acrm,
c.AllowedMethods)
}
return
}
acrhs := req.Request.Header.Get(HEADER_AccessControlRequestHeaders)
if len(acrhs) > 0 {
for _, each := range strings.Split(acrhs, ",") {
if !c.isValidAccessControlRequestHeader(strings.Trim(each, " ")) {
if trace {
traceLogger.Printf("Http header %s:%s is not in %v",
HEADER_AccessControlRequestHeaders,
acrhs,
c.AllowedHeaders)
}
return
}
}
}
resp.AddHeader(HEADER_AccessControlAllowMethods, strings.Join(c.AllowedMethods, ","))
resp.AddHeader(HEADER_AccessControlAllowHeaders, acrhs)
c.setOptionsHeaders(req, resp)
// return http 200 response, no body
}
func (c CrossOriginResourceSharing) setOptionsHeaders(req *Request, resp *Response) {
c.checkAndSetExposeHeaders(resp)
c.setAllowOriginHeader(req, resp)
c.checkAndSetAllowCredentials(resp)
if c.MaxAge > 0 {
resp.AddHeader(HEADER_AccessControlMaxAge, strconv.Itoa(c.MaxAge))
}
}
func (c CrossOriginResourceSharing) isOriginAllowed(origin string) bool {
if len(origin) == 0 {
return false
}
if len(c.AllowedDomains) == 0 {
return true
}
allowed := false
for _, domain := range c.AllowedDomains {
if domain == origin {
allowed = true
break
}
}
if !allowed {
if len(c.allowedOriginPatterns) == 0 {
// compile allowed domains to allowed origin patterns
allowedOriginRegexps, err := compileRegexps(c.AllowedDomains)
if err != nil {
return false
}
c.allowedOriginPatterns = allowedOriginRegexps
}
for _, pattern := range c.allowedOriginPatterns {
if allowed = pattern.MatchString(origin); allowed {
break
}
}
}
return allowed
}
func (c CrossOriginResourceSharing) setAllowOriginHeader(req *Request, resp *Response) {
origin := req.Request.Header.Get(HEADER_Origin)
if c.isOriginAllowed(origin) {
resp.AddHeader(HEADER_AccessControlAllowOrigin, origin)
}
}
func (c CrossOriginResourceSharing) checkAndSetExposeHeaders(resp *Response) {
if len(c.ExposeHeaders) > 0 {
resp.AddHeader(HEADER_AccessControlExposeHeaders, strings.Join(c.ExposeHeaders, ","))
}
}
func (c CrossOriginResourceSharing) checkAndSetAllowCredentials(resp *Response) {
if c.CookiesAllowed {
resp.AddHeader(HEADER_AccessControlAllowCredentials, "true")
}
}
func (c CrossOriginResourceSharing) isValidAccessControlRequestMethod(method string, allowedMethods []string) bool {
for _, each := range allowedMethods {
if each == method {
return true
}
}
return false
}
func (c CrossOriginResourceSharing) isValidAccessControlRequestHeader(header string) bool {
for _, each := range c.AllowedHeaders {
if strings.ToLower(each) == strings.ToLower(header) {
return true
}
}
return false
}
// Take a list of strings and compile them into a list of regular expressions.
func compileRegexps(regexpStrings []string) ([]*regexp.Regexp, error) {
regexps := []*regexp.Regexp{}
for _, regexpStr := range regexpStrings {
r, err := regexp.Compile(regexpStr)
if err != nil {
return regexps, err
}
regexps = append(regexps, r)
}
return regexps, nil
}
go test -coverprofile=coverage.out
go tool cover -html=coverage.out
\ No newline at end of file
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"net/http"
"regexp"
"sort"
"strings"
)
// CurlyRouter expects Routes with paths that contain zero or more parameters in curly brackets.
type CurlyRouter struct{}
// SelectRoute is part of the Router interface and returns the best match
// for the WebService and its Route for the given Request.
func (c CurlyRouter) SelectRoute(
webServices []*WebService,
httpRequest *http.Request) (selectedService *WebService, selected *Route, err error) {
requestTokens := tokenizePath(httpRequest.URL.Path)
detectedService := c.detectWebService(requestTokens, webServices)
if detectedService == nil {
if trace {
traceLogger.Printf("no WebService was found to match URL path:%s\n", httpRequest.URL.Path)
}
return nil, nil, NewError(http.StatusNotFound, "404: Page Not Found")
}
candidateRoutes := c.selectRoutes(detectedService, requestTokens)
if len(candidateRoutes) == 0 {
if trace {
traceLogger.Printf("no Route in WebService with path %s was found to match URL path:%s\n", detectedService.rootPath, httpRequest.URL.Path)
}
return detectedService, nil, NewError(http.StatusNotFound, "404: Page Not Found")
}
selectedRoute, err := c.detectRoute(candidateRoutes, httpRequest)
if selectedRoute == nil {
return detectedService, nil, err
}
return detectedService, selectedRoute, nil
}
// selectRoutes return a collection of Route from a WebService that matches the path tokens from the request.
func (c CurlyRouter) selectRoutes(ws *WebService, requestTokens []string) sortableCurlyRoutes {
candidates := make(sortableCurlyRoutes, 0, 8)
for _, each := range ws.routes {
matches, paramCount, staticCount := c.matchesRouteByPathTokens(each.pathParts, requestTokens, each.hasCustomVerb)
if matches {
candidates.add(curlyRoute{each, paramCount, staticCount}) // TODO make sure Routes() return pointers?
}
}
sort.Sort(candidates)
return candidates
}
// matchesRouteByPathTokens computes whether it matches, howmany parameters do match and what the number of static path elements are.
func (c CurlyRouter) matchesRouteByPathTokens(routeTokens, requestTokens []string, routeHasCustomVerb bool) (matches bool, paramCount int, staticCount int) {
if len(routeTokens) < len(requestTokens) {
// proceed in matching only if last routeToken is wildcard
count := len(routeTokens)
if count == 0 || !strings.HasSuffix(routeTokens[count-1], "*}") {
return false, 0, 0
}
// proceed
}
for i, routeToken := range routeTokens {
if i == len(requestTokens) {
// reached end of request path
return false, 0, 0
}
requestToken := requestTokens[i]
if routeHasCustomVerb && hasCustomVerb(routeToken){
if !isMatchCustomVerb(routeToken, requestToken) {
return false, 0, 0
}
staticCount++
requestToken = removeCustomVerb(requestToken)
routeToken = removeCustomVerb(routeToken)
}
if strings.HasPrefix(routeToken, "{") {
paramCount++
if colon := strings.Index(routeToken, ":"); colon != -1 {
// match by regex
matchesToken, matchesRemainder := c.regularMatchesPathToken(routeToken, colon, requestToken)
if !matchesToken {
return false, 0, 0
}
if matchesRemainder {
break
}
}
} else { // no { prefix
if requestToken != routeToken {
return false, 0, 0
}
staticCount++
}
}
return true, paramCount, staticCount
}
// regularMatchesPathToken tests whether the regular expression part of routeToken matches the requestToken or all remaining tokens
// format routeToken is {someVar:someExpression}, e.g. {zipcode:[\d][\d][\d][\d][A-Z][A-Z]}
func (c CurlyRouter) regularMatchesPathToken(routeToken string, colon int, requestToken string) (matchesToken bool, matchesRemainder bool) {
regPart := routeToken[colon+1 : len(routeToken)-1]
if regPart == "*" {
if trace {
traceLogger.Printf("wildcard parameter detected in route token %s that matches %s\n", routeToken, requestToken)
}
return true, true
}
matched, err := regexp.MatchString(regPart, requestToken)
return (matched && err == nil), false
}
var jsr311Router = RouterJSR311{}
// detectRoute selectes from a list of Route the first match by inspecting both the Accept and Content-Type
// headers of the Request. See also RouterJSR311 in jsr311.go
func (c CurlyRouter) detectRoute(candidateRoutes sortableCurlyRoutes, httpRequest *http.Request) (*Route, error) {
// tracing is done inside detectRoute
return jsr311Router.detectRoute(candidateRoutes.routes(), httpRequest)
}
// detectWebService returns the best matching webService given the list of path tokens.
// see also computeWebserviceScore
func (c CurlyRouter) detectWebService(requestTokens []string, webServices []*WebService) *WebService {
var best *WebService
score := -1
for _, each := range webServices {
matches, eachScore := c.computeWebserviceScore(requestTokens, each.pathExpr.tokens)
if matches && (eachScore > score) {
best = each
score = eachScore
}
}
return best
}
// computeWebserviceScore returns whether tokens match and
// the weighted score of the longest matching consecutive tokens from the beginning.
func (c CurlyRouter) computeWebserviceScore(requestTokens []string, tokens []string) (bool, int) {
if len(tokens) > len(requestTokens) {
return false, 0
}
score := 0
for i := 0; i < len(tokens); i++ {
each := requestTokens[i]
other := tokens[i]
if len(each) == 0 && len(other) == 0 {
score++
continue
}
if len(other) > 0 && strings.HasPrefix(other, "{") {
// no empty match
if len(each) == 0 {
return false, score
}
score += 1
} else {
// not a parameter
if each != other {
return false, score
}
score += (len(tokens) - i) * 10 //fuzzy
}
}
return true, score
}
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
// curlyRoute exits for sorting Routes by the CurlyRouter based on number of parameters and number of static path elements.
type curlyRoute struct {
route Route
paramCount int
staticCount int
}
// sortableCurlyRoutes orders by most parameters and path elements first.
type sortableCurlyRoutes []curlyRoute
func (s *sortableCurlyRoutes) add(route curlyRoute) {
*s = append(*s, route)
}
func (s sortableCurlyRoutes) routes() (routes []Route) {
routes = make([]Route, 0, len(s))
for _, each := range s {
routes = append(routes, each.route) // TODO change return type
}
return routes
}
func (s sortableCurlyRoutes) Len() int {
return len(s)
}
func (s sortableCurlyRoutes) Swap(i, j int) {
s[i], s[j] = s[j], s[i]
}
func (s sortableCurlyRoutes) Less(i, j int) bool {
a := s[j]
b := s[i]
// primary key
if a.staticCount < b.staticCount {
return true
}
if a.staticCount > b.staticCount {
return false
}
// secundary key
if a.paramCount < b.paramCount {
return true
}
if a.paramCount > b.paramCount {
return false
}
return a.route.Path < b.route.Path
}
package restful
import (
"fmt"
"regexp"
)
var (
customVerbReg = regexp.MustCompile(":([A-Za-z]+)$")
)
func hasCustomVerb(routeToken string) bool {
return customVerbReg.MatchString(routeToken)
}
func isMatchCustomVerb(routeToken string, pathToken string) bool {
rs := customVerbReg.FindStringSubmatch(routeToken)
if len(rs) < 2 {
return false
}
customVerb := rs[1]
specificVerbReg := regexp.MustCompile(fmt.Sprintf(":%s$", customVerb))
return specificVerbReg.MatchString(pathToken)
}
func removeCustomVerb(str string) string {
return customVerbReg.ReplaceAllString(str, "")
}
/*
Package restful , a lean package for creating REST-style WebServices without magic.
WebServices and Routes
A WebService has a collection of Route objects that dispatch incoming Http Requests to a function calls.
Typically, a WebService has a root path (e.g. /users) and defines common MIME types for its routes.
WebServices must be added to a container (see below) in order to handler Http requests from a server.
A Route is defined by a HTTP method, an URL path and (optionally) the MIME types it consumes (Content-Type) and produces (Accept).
This package has the logic to find the best matching Route and if found, call its Function.
ws := new(restful.WebService)
ws.
Path("/users").
Consumes(restful.MIME_JSON, restful.MIME_XML).
Produces(restful.MIME_JSON, restful.MIME_XML)
ws.Route(ws.GET("/{user-id}").To(u.findUser)) // u is a UserResource
...
// GET http://localhost:8080/users/1
func (u UserResource) findUser(request *restful.Request, response *restful.Response) {
id := request.PathParameter("user-id")
...
}
The (*Request, *Response) arguments provide functions for reading information from the request and writing information back to the response.
See the example https://github.com/emicklei/go-restful/blob/master/examples/restful-user-resource.go with a full implementation.
Regular expression matching Routes
A Route parameter can be specified using the format "uri/{var[:regexp]}" or the special version "uri/{var:*}" for matching the tail of the path.
For example, /persons/{name:[A-Z][A-Z]} can be used to restrict values for the parameter "name" to only contain capital alphabetic characters.
Regular expressions must use the standard Go syntax as described in the regexp package. (https://code.google.com/p/re2/wiki/Syntax)
This feature requires the use of a CurlyRouter.
Containers
A Container holds a collection of WebServices, Filters and a http.ServeMux for multiplexing http requests.
Using the statements "restful.Add(...) and restful.Filter(...)" will register WebServices and Filters to the Default Container.
The Default container of go-restful uses the http.DefaultServeMux.
You can create your own Container and create a new http.Server for that particular container.
container := restful.NewContainer()
server := &http.Server{Addr: ":8081", Handler: container}
Filters
A filter dynamically intercepts requests and responses to transform or use the information contained in the requests or responses.
You can use filters to perform generic logging, measurement, authentication, redirect, set response headers etc.
In the restful package there are three hooks into the request,response flow where filters can be added.
Each filter must define a FilterFunction:
func (req *restful.Request, resp *restful.Response, chain *restful.FilterChain)
Use the following statement to pass the request,response pair to the next filter or RouteFunction
chain.ProcessFilter(req, resp)
Container Filters
These are processed before any registered WebService.
// install a (global) filter for the default container (processed before any webservice)
restful.Filter(globalLogging)
WebService Filters
These are processed before any Route of a WebService.
// install a webservice filter (processed before any route)
ws.Filter(webserviceLogging).Filter(measureTime)
Route Filters
These are processed before calling the function associated with the Route.
// install 2 chained route filters (processed before calling findUser)
ws.Route(ws.GET("/{user-id}").Filter(routeLogging).Filter(NewCountFilter().routeCounter).To(findUser))
See the example https://github.com/emicklei/go-restful/blob/master/examples/restful-filters.go with full implementations.
Response Encoding
Two encodings are supported: gzip and deflate. To enable this for all responses:
restful.DefaultContainer.EnableContentEncoding(true)
If a Http request includes the Accept-Encoding header then the response content will be compressed using the specified encoding.
Alternatively, you can create a Filter that performs the encoding and install it per WebService or Route.
See the example https://github.com/emicklei/go-restful/blob/master/examples/restful-encoding-filter.go
OPTIONS support
By installing a pre-defined container filter, your Webservice(s) can respond to the OPTIONS Http request.
Filter(OPTIONSFilter())
CORS
By installing the filter of a CrossOriginResourceSharing (CORS), your WebService(s) can handle CORS requests.
cors := CrossOriginResourceSharing{ExposeHeaders: []string{"X-My-Header"}, CookiesAllowed: false, Container: DefaultContainer}
Filter(cors.Filter)
Error Handling
Unexpected things happen. If a request cannot be processed because of a failure, your service needs to tell via the response what happened and why.
For this reason HTTP status codes exist and it is important to use the correct code in every exceptional situation.
400: Bad Request
If path or query parameters are not valid (content or type) then use http.StatusBadRequest.
404: Not Found
Despite a valid URI, the resource requested may not be available
500: Internal Server Error
If the application logic could not process the request (or write the response) then use http.StatusInternalServerError.
405: Method Not Allowed
The request has a valid URL but the method (GET,PUT,POST,...) is not allowed.
406: Not Acceptable
The request does not have or has an unknown Accept Header set for this operation.
415: Unsupported Media Type
The request does not have or has an unknown Content-Type Header set for this operation.
ServiceError
In addition to setting the correct (error) Http status code, you can choose to write a ServiceError message on the response.
Performance options
This package has several options that affect the performance of your service. It is important to understand them and how you can change it.
restful.DefaultContainer.DoNotRecover(false)
DoNotRecover controls whether panics will be caught to return HTTP 500.
If set to false, the container will recover from panics.
Default value is true
restful.SetCompressorProvider(NewBoundedCachedCompressors(20, 20))
If content encoding is enabled then the default strategy for getting new gzip/zlib writers and readers is to use a sync.Pool.
Because writers are expensive structures, performance is even more improved when using a preloaded cache. You can also inject your own implementation.
Trouble shooting
This package has the means to produce detail logging of the complete Http request matching process and filter invocation.
Enabling this feature requires you to set an implementation of restful.StdLogger (e.g. log.Logger) instance such as:
restful.TraceLogger(log.New(os.Stdout, "[restful] ", log.LstdFlags|log.Lshortfile))
Logging
The restful.SetLogger() method allows you to override the logger used by the package. By default restful
uses the standard library `log` package and logs to stdout. Different logging packages are supported as
long as they conform to `StdLogger` interface defined in the `log` sub-package, writing an adapter for your
preferred package is simple.
Resources
[project]: https://github.com/emicklei/go-restful
[examples]: https://github.com/emicklei/go-restful/blob/master/examples
[design]: http://ernestmicklei.com/2012/11/11/go-restful-api-design/
[showcases]: https://github.com/emicklei/mora, https://github.com/emicklei/landskape
(c) 2012-2015, http://ernestmicklei.com. MIT License
*/
package restful
package restful
// Copyright 2015 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"encoding/xml"
"strings"
"sync"
)
// EntityReaderWriter can read and write values using an encoding such as JSON,XML.
type EntityReaderWriter interface {
// Read a serialized version of the value from the request.
// The Request may have a decompressing reader. Depends on Content-Encoding.
Read(req *Request, v interface{}) error
// Write a serialized version of the value on the response.
// The Response may have a compressing writer. Depends on Accept-Encoding.
// status should be a valid Http Status code
Write(resp *Response, status int, v interface{}) error
}
// entityAccessRegistry is a singleton
var entityAccessRegistry = &entityReaderWriters{
protection: new(sync.RWMutex),
accessors: map[string]EntityReaderWriter{},
}
// entityReaderWriters associates MIME to an EntityReaderWriter
type entityReaderWriters struct {
protection *sync.RWMutex
accessors map[string]EntityReaderWriter
}
func init() {
RegisterEntityAccessor(MIME_JSON, NewEntityAccessorJSON(MIME_JSON))
RegisterEntityAccessor(MIME_XML, NewEntityAccessorXML(MIME_XML))
}
// RegisterEntityAccessor add/overrides the ReaderWriter for encoding content with this MIME type.
func RegisterEntityAccessor(mime string, erw EntityReaderWriter) {
entityAccessRegistry.protection.Lock()
defer entityAccessRegistry.protection.Unlock()
entityAccessRegistry.accessors[mime] = erw
}
// NewEntityAccessorJSON returns a new EntityReaderWriter for accessing JSON content.
// This package is already initialized with such an accessor using the MIME_JSON contentType.
func NewEntityAccessorJSON(contentType string) EntityReaderWriter {
return entityJSONAccess{ContentType: contentType}
}
// NewEntityAccessorXML returns a new EntityReaderWriter for accessing XML content.
// This package is already initialized with such an accessor using the MIME_XML contentType.
func NewEntityAccessorXML(contentType string) EntityReaderWriter {
return entityXMLAccess{ContentType: contentType}
}
// accessorAt returns the registered ReaderWriter for this MIME type.
func (r *entityReaderWriters) accessorAt(mime string) (EntityReaderWriter, bool) {
r.protection.RLock()
defer r.protection.RUnlock()
er, ok := r.accessors[mime]
if !ok {
// retry with reverse lookup
// more expensive but we are in an exceptional situation anyway
for k, v := range r.accessors {
if strings.Contains(mime, k) {
return v, true
}
}
}
return er, ok
}
// entityXMLAccess is a EntityReaderWriter for XML encoding
type entityXMLAccess struct {
// This is used for setting the Content-Type header when writing
ContentType string
}
// Read unmarshalls the value from XML
func (e entityXMLAccess) Read(req *Request, v interface{}) error {
return xml.NewDecoder(req.Request.Body).Decode(v)
}
// Write marshalls the value to JSON and set the Content-Type Header.
func (e entityXMLAccess) Write(resp *Response, status int, v interface{}) error {
return writeXML(resp, status, e.ContentType, v)
}
// writeXML marshalls the value to JSON and set the Content-Type Header.
func writeXML(resp *Response, status int, contentType string, v interface{}) error {
if v == nil {
resp.WriteHeader(status)
// do not write a nil representation
return nil
}
if resp.prettyPrint {
// pretty output must be created and written explicitly
output, err := xml.MarshalIndent(v, " ", " ")
if err != nil {
return err
}
resp.Header().Set(HEADER_ContentType, contentType)
resp.WriteHeader(status)
_, err = resp.Write([]byte(xml.Header))
if err != nil {
return err
}
_, err = resp.Write(output)
return err
}
// not-so-pretty
resp.Header().Set(HEADER_ContentType, contentType)
resp.WriteHeader(status)
return xml.NewEncoder(resp).Encode(v)
}
// entityJSONAccess is a EntityReaderWriter for JSON encoding
type entityJSONAccess struct {
// This is used for setting the Content-Type header when writing
ContentType string
}
// Read unmarshalls the value from JSON
func (e entityJSONAccess) Read(req *Request, v interface{}) error {
decoder := NewDecoder(req.Request.Body)
decoder.UseNumber()
return decoder.Decode(v)
}
// Write marshalls the value to JSON and set the Content-Type Header.
func (e entityJSONAccess) Write(resp *Response, status int, v interface{}) error {
return writeJSON(resp, status, e.ContentType, v)
}
// write marshalls the value to JSON and set the Content-Type Header.
func writeJSON(resp *Response, status int, contentType string, v interface{}) error {
if v == nil {
resp.WriteHeader(status)
// do not write a nil representation
return nil
}
if resp.prettyPrint {
// pretty output must be created and written explicitly
output, err := MarshalIndent(v, "", " ")
if err != nil {
return err
}
resp.Header().Set(HEADER_ContentType, contentType)
resp.WriteHeader(status)
_, err = resp.Write(output)
return err
}
// not-so-pretty
resp.Header().Set(HEADER_ContentType, contentType)
resp.WriteHeader(status)
return NewEncoder(resp).Encode(v)
}
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
// FilterChain is a request scoped object to process one or more filters before calling the target RouteFunction.
type FilterChain struct {
Filters []FilterFunction // ordered list of FilterFunction
Index int // index into filters that is currently in progress
Target RouteFunction // function to call after passing all filters
}
// ProcessFilter passes the request,response pair through the next of Filters.
// Each filter can decide to proceed to the next Filter or handle the Response itself.
func (f *FilterChain) ProcessFilter(request *Request, response *Response) {
if f.Index < len(f.Filters) {
f.Index++
f.Filters[f.Index-1](request, response, f)
} else {
f.Target(request, response)
}
}
// FilterFunction definitions must call ProcessFilter on the FilterChain to pass on the control and eventually call the RouteFunction
type FilterFunction func(*Request, *Response, *FilterChain)
// NoBrowserCacheFilter is a filter function to set HTTP headers that disable browser caching
// See examples/restful-no-cache-filter.go for usage
func NoBrowserCacheFilter(req *Request, resp *Response, chain *FilterChain) {
resp.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate") // HTTP 1.1.
resp.Header().Set("Pragma", "no-cache") // HTTP 1.0.
resp.Header().Set("Expires", "0") // Proxies.
chain.ProcessFilter(req, resp)
}
// +build !jsoniter
package restful
import "encoding/json"
var (
MarshalIndent = json.MarshalIndent
NewDecoder = json.NewDecoder
NewEncoder = json.NewEncoder
)
// +build jsoniter
package restful
import "github.com/json-iterator/go"
var (
json = jsoniter.ConfigCompatibleWithStandardLibrary
MarshalIndent = json.MarshalIndent
NewDecoder = json.NewDecoder
NewEncoder = json.NewEncoder
)
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"errors"
"fmt"
"net/http"
"sort"
)
// RouterJSR311 implements the flow for matching Requests to Routes (and consequently Resource Functions)
// as specified by the JSR311 http://jsr311.java.net/nonav/releases/1.1/spec/spec.html.
// RouterJSR311 implements the Router interface.
// Concept of locators is not implemented.
type RouterJSR311 struct{}
// SelectRoute is part of the Router interface and returns the best match
// for the WebService and its Route for the given Request.
func (r RouterJSR311) SelectRoute(
webServices []*WebService,
httpRequest *http.Request) (selectedService *WebService, selectedRoute *Route, err error) {
// Identify the root resource class (WebService)
dispatcher, finalMatch, err := r.detectDispatcher(httpRequest.URL.Path, webServices)
if err != nil {
return nil, nil, NewError(http.StatusNotFound, "")
}
// Obtain the set of candidate methods (Routes)
routes := r.selectRoutes(dispatcher, finalMatch)
if len(routes) == 0 {
return dispatcher, nil, NewError(http.StatusNotFound, "404: Page Not Found")
}
// Identify the method (Route) that will handle the request
route, ok := r.detectRoute(routes, httpRequest)
return dispatcher, route, ok
}
// ExtractParameters is used to obtain the path parameters from the route using the same matching
// engine as the JSR 311 router.
func (r RouterJSR311) ExtractParameters(route *Route, webService *WebService, urlPath string) map[string]string {
webServiceExpr := webService.pathExpr
webServiceMatches := webServiceExpr.Matcher.FindStringSubmatch(urlPath)
pathParameters := r.extractParams(webServiceExpr, webServiceMatches)
routeExpr := route.pathExpr
routeMatches := routeExpr.Matcher.FindStringSubmatch(webServiceMatches[len(webServiceMatches)-1])
routeParams := r.extractParams(routeExpr, routeMatches)
for key, value := range routeParams {
pathParameters[key] = value
}
return pathParameters
}
func (RouterJSR311) extractParams(pathExpr *pathExpression, matches []string) map[string]string {
params := map[string]string{}
for i := 1; i < len(matches); i++ {
if len(pathExpr.VarNames) >= i {
params[pathExpr.VarNames[i-1]] = matches[i]
}
}
return params
}
// http://jsr311.java.net/nonav/releases/1.1/spec/spec3.html#x3-360003.7.2
func (r RouterJSR311) detectRoute(routes []Route, httpRequest *http.Request) (*Route, error) {
candidates := make([]*Route, 0, 8)
for i, each := range routes {
ok := true
for _, fn := range each.If {
if !fn(httpRequest) {
ok = false
break
}
}
if ok {
candidates = append(candidates, &routes[i])
}
}
if len(candidates) == 0 {
if trace {
traceLogger.Printf("no Route found (from %d) that passes conditional checks", len(routes))
}
return nil, NewError(http.StatusNotFound, "404: Not Found")
}
// http method
previous := candidates
candidates = candidates[:0]
for _, each := range previous {
if httpRequest.Method == each.Method {
candidates = append(candidates, each)
}
}
if len(candidates) == 0 {
if trace {
traceLogger.Printf("no Route found (in %d routes) that matches HTTP method %s\n", len(previous), httpRequest.Method)
}
return nil, NewError(http.StatusMethodNotAllowed, "405: Method Not Allowed")
}
// content-type
contentType := httpRequest.Header.Get(HEADER_ContentType)
previous = candidates
candidates = candidates[:0]
for _, each := range previous {
if each.matchesContentType(contentType) {
candidates = append(candidates, each)
}
}
if len(candidates) == 0 {
if trace {
traceLogger.Printf("no Route found (from %d) that matches HTTP Content-Type: %s\n", len(previous), contentType)
}
if httpRequest.ContentLength > 0 {
return nil, NewError(http.StatusUnsupportedMediaType, "415: Unsupported Media Type")
}
}
// accept
previous = candidates
candidates = candidates[:0]
accept := httpRequest.Header.Get(HEADER_Accept)
if len(accept) == 0 {
accept = "*/*"
}
for _, each := range previous {
if each.matchesAccept(accept) {
candidates = append(candidates, each)
}
}
if len(candidates) == 0 {
if trace {
traceLogger.Printf("no Route found (from %d) that matches HTTP Accept: %s\n", len(previous), accept)
}
return nil, NewError(http.StatusNotAcceptable, "406: Not Acceptable")
}
// return r.bestMatchByMedia(outputMediaOk, contentType, accept), nil
return candidates[0], nil
}
// http://jsr311.java.net/nonav/releases/1.1/spec/spec3.html#x3-360003.7.2
// n/m > n/* > */*
func (r RouterJSR311) bestMatchByMedia(routes []Route, contentType string, accept string) *Route {
// TODO
return &routes[0]
}
// http://jsr311.java.net/nonav/releases/1.1/spec/spec3.html#x3-360003.7.2 (step 2)
func (r RouterJSR311) selectRoutes(dispatcher *WebService, pathRemainder string) []Route {
filtered := &sortableRouteCandidates{}
for _, each := range dispatcher.Routes() {
pathExpr := each.pathExpr
matches := pathExpr.Matcher.FindStringSubmatch(pathRemainder)
if matches != nil {
lastMatch := matches[len(matches)-1]
if len(lastMatch) == 0 || lastMatch == "/" { // do not include if value is neither empty nor ‘/’.
filtered.candidates = append(filtered.candidates,
routeCandidate{each, len(matches) - 1, pathExpr.LiteralCount, pathExpr.VarCount})
}
}
}
if len(filtered.candidates) == 0 {
if trace {
traceLogger.Printf("WebService on path %s has no routes that match URL path remainder:%s\n", dispatcher.rootPath, pathRemainder)
}
return []Route{}
}
sort.Sort(sort.Reverse(filtered))
// select other routes from candidates whoes expression matches rmatch
matchingRoutes := []Route{filtered.candidates[0].route}
for c := 1; c < len(filtered.candidates); c++ {
each := filtered.candidates[c]
if each.route.pathExpr.Matcher.MatchString(pathRemainder) {
matchingRoutes = append(matchingRoutes, each.route)
}
}
return matchingRoutes
}
// http://jsr311.java.net/nonav/releases/1.1/spec/spec3.html#x3-360003.7.2 (step 1)
func (r RouterJSR311) detectDispatcher(requestPath string, dispatchers []*WebService) (*WebService, string, error) {
filtered := &sortableDispatcherCandidates{}
for _, each := range dispatchers {
matches := each.pathExpr.Matcher.FindStringSubmatch(requestPath)
if matches != nil {
filtered.candidates = append(filtered.candidates,
dispatcherCandidate{each, matches[len(matches)-1], len(matches), each.pathExpr.LiteralCount, each.pathExpr.VarCount})
}
}
if len(filtered.candidates) == 0 {
if trace {
traceLogger.Printf("no WebService was found to match URL path:%s\n", requestPath)
}
return nil, "", errors.New("not found")
}
sort.Sort(sort.Reverse(filtered))
return filtered.candidates[0].dispatcher, filtered.candidates[0].finalMatch, nil
}
// Types and functions to support the sorting of Routes
type routeCandidate struct {
route Route
matchesCount int // the number of capturing groups
literalCount int // the number of literal characters (means those not resulting from template variable substitution)
nonDefaultCount int // the number of capturing groups with non-default regular expressions (i.e. not ‘([^ /]+?)’)
}
func (r routeCandidate) expressionToMatch() string {
return r.route.pathExpr.Source
}
func (r routeCandidate) String() string {
return fmt.Sprintf("(m=%d,l=%d,n=%d)", r.matchesCount, r.literalCount, r.nonDefaultCount)
}
type sortableRouteCandidates struct {
candidates []routeCandidate
}
func (rcs *sortableRouteCandidates) Len() int {
return len(rcs.candidates)
}
func (rcs *sortableRouteCandidates) Swap(i, j int) {
rcs.candidates[i], rcs.candidates[j] = rcs.candidates[j], rcs.candidates[i]
}
func (rcs *sortableRouteCandidates) Less(i, j int) bool {
ci := rcs.candidates[i]
cj := rcs.candidates[j]
// primary key
if ci.literalCount < cj.literalCount {
return true
}
if ci.literalCount > cj.literalCount {
return false
}
// secundary key
if ci.matchesCount < cj.matchesCount {
return true
}
if ci.matchesCount > cj.matchesCount {
return false
}
// tertiary key
if ci.nonDefaultCount < cj.nonDefaultCount {
return true
}
if ci.nonDefaultCount > cj.nonDefaultCount {
return false
}
// quaternary key ("source" is interpreted as Path)
return ci.route.Path < cj.route.Path
}
// Types and functions to support the sorting of Dispatchers
type dispatcherCandidate struct {
dispatcher *WebService
finalMatch string
matchesCount int // the number of capturing groups
literalCount int // the number of literal characters (means those not resulting from template variable substitution)
nonDefaultCount int // the number of capturing groups with non-default regular expressions (i.e. not ‘([^ /]+?)’)
}
type sortableDispatcherCandidates struct {
candidates []dispatcherCandidate
}
func (dc *sortableDispatcherCandidates) Len() int {
return len(dc.candidates)
}
func (dc *sortableDispatcherCandidates) Swap(i, j int) {
dc.candidates[i], dc.candidates[j] = dc.candidates[j], dc.candidates[i]
}
func (dc *sortableDispatcherCandidates) Less(i, j int) bool {
ci := dc.candidates[i]
cj := dc.candidates[j]
// primary key
if ci.matchesCount < cj.matchesCount {
return true
}
if ci.matchesCount > cj.matchesCount {
return false
}
// secundary key
if ci.literalCount < cj.literalCount {
return true
}
if ci.literalCount > cj.literalCount {
return false
}
// tertiary key
return ci.nonDefaultCount < cj.nonDefaultCount
}
package log
import (
stdlog "log"
"os"
)
// StdLogger corresponds to a minimal subset of the interface satisfied by stdlib log.Logger
type StdLogger interface {
Print(v ...interface{})
Printf(format string, v ...interface{})
}
var Logger StdLogger
func init() {
// default Logger
SetLogger(stdlog.New(os.Stderr, "[restful] ", stdlog.LstdFlags|stdlog.Lshortfile))
}
// SetLogger sets the logger for this package
func SetLogger(customLogger StdLogger) {
Logger = customLogger
}
// Print delegates to the Logger
func Print(v ...interface{}) {
Logger.Print(v...)
}
// Printf delegates to the Logger
func Printf(format string, v ...interface{}) {
Logger.Printf(format, v...)
}
package restful
// Copyright 2014 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"github.com/emicklei/go-restful/log"
)
var trace bool = false
var traceLogger log.StdLogger
func init() {
traceLogger = log.Logger // use the package logger by default
}
// TraceLogger enables detailed logging of Http request matching and filter invocation. Default no logger is set.
// You may call EnableTracing() directly to enable trace logging to the package-wide logger.
func TraceLogger(logger log.StdLogger) {
traceLogger = logger
EnableTracing(logger != nil)
}
// SetLogger exposes the setter for the global logger on the top-level package
func SetLogger(customLogger log.StdLogger) {
log.SetLogger(customLogger)
}
// EnableTracing can be used to Trace logging on and off.
func EnableTracing(enabled bool) {
trace = enabled
}
package restful
import (
"strconv"
"strings"
)
type mime struct {
media string
quality float64
}
// insertMime adds a mime to a list and keeps it sorted by quality.
func insertMime(l []mime, e mime) []mime {
for i, each := range l {
// if current mime has lower quality then insert before
if e.quality > each.quality {
left := append([]mime{}, l[0:i]...)
return append(append(left, e), l[i:]...)
}
}
return append(l, e)
}
const qFactorWeightingKey = "q"
// sortedMimes returns a list of mime sorted (desc) by its specified quality.
// e.g. text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3
func sortedMimes(accept string) (sorted []mime) {
for _, each := range strings.Split(accept, ",") {
typeAndQuality := strings.Split(strings.Trim(each, " "), ";")
if len(typeAndQuality) == 1 {
sorted = insertMime(sorted, mime{typeAndQuality[0], 1.0})
} else {
// take factor
qAndWeight := strings.Split(typeAndQuality[1], "=")
if len(qAndWeight) == 2 && strings.Trim(qAndWeight[0], " ") == qFactorWeightingKey {
f, err := strconv.ParseFloat(qAndWeight[1], 64)
if err != nil {
traceLogger.Printf("unable to parse quality in %s, %v", each, err)
} else {
sorted = insertMime(sorted, mime{typeAndQuality[0], f})
}
} else {
sorted = insertMime(sorted, mime{typeAndQuality[0], 1.0})
}
}
}
return
}
package restful
import "strings"
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
// OPTIONSFilter is a filter function that inspects the Http Request for the OPTIONS method
// and provides the response with a set of allowed methods for the request URL Path.
// As for any filter, you can also install it for a particular WebService within a Container.
// Note: this filter is not needed when using CrossOriginResourceSharing (for CORS).
func (c *Container) OPTIONSFilter(req *Request, resp *Response, chain *FilterChain) {
if "OPTIONS" != req.Request.Method {
chain.ProcessFilter(req, resp)
return
}
archs := req.Request.Header.Get(HEADER_AccessControlRequestHeaders)
methods := strings.Join(c.computeAllowedMethods(req), ",")
origin := req.Request.Header.Get(HEADER_Origin)
resp.AddHeader(HEADER_Allow, methods)
resp.AddHeader(HEADER_AccessControlAllowOrigin, origin)
resp.AddHeader(HEADER_AccessControlAllowHeaders, archs)
resp.AddHeader(HEADER_AccessControlAllowMethods, methods)
}
// OPTIONSFilter is a filter function that inspects the Http Request for the OPTIONS method
// and provides the response with a set of allowed methods for the request URL Path.
// Note: this filter is not needed when using CrossOriginResourceSharing (for CORS).
func OPTIONSFilter() FilterFunction {
return DefaultContainer.OPTIONSFilter
}
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
const (
// PathParameterKind = indicator of Request parameter type "path"
PathParameterKind = iota
// QueryParameterKind = indicator of Request parameter type "query"
QueryParameterKind
// BodyParameterKind = indicator of Request parameter type "body"
BodyParameterKind
// HeaderParameterKind = indicator of Request parameter type "header"
HeaderParameterKind
// FormParameterKind = indicator of Request parameter type "form"
FormParameterKind
// CollectionFormatCSV comma separated values `foo,bar`
CollectionFormatCSV = CollectionFormat("csv")
// CollectionFormatSSV space separated values `foo bar`
CollectionFormatSSV = CollectionFormat("ssv")
// CollectionFormatTSV tab separated values `foo\tbar`
CollectionFormatTSV = CollectionFormat("tsv")
// CollectionFormatPipes pipe separated values `foo|bar`
CollectionFormatPipes = CollectionFormat("pipes")
// CollectionFormatMulti corresponds to multiple parameter instances instead of multiple values for a single
// instance `foo=bar&foo=baz`. This is valid only for QueryParameters and FormParameters
CollectionFormatMulti = CollectionFormat("multi")
)
type CollectionFormat string
func (cf CollectionFormat) String() string {
return string(cf)
}
// Parameter is for documententing the parameter used in a Http Request
// ParameterData kinds are Path,Query and Body
type Parameter struct {
data *ParameterData
}
// ParameterData represents the state of a Parameter.
// It is made public to make it accessible to e.g. the Swagger package.
type ParameterData struct {
Name, Description, DataType, DataFormat string
Kind int
Required bool
AllowableValues map[string]string
AllowMultiple bool
DefaultValue string
CollectionFormat string
}
// Data returns the state of the Parameter
func (p *Parameter) Data() ParameterData {
return *p.data
}
// Kind returns the parameter type indicator (see const for valid values)
func (p *Parameter) Kind() int {
return p.data.Kind
}
func (p *Parameter) bePath() *Parameter {
p.data.Kind = PathParameterKind
return p
}
func (p *Parameter) beQuery() *Parameter {
p.data.Kind = QueryParameterKind
return p
}
func (p *Parameter) beBody() *Parameter {
p.data.Kind = BodyParameterKind
return p
}
func (p *Parameter) beHeader() *Parameter {
p.data.Kind = HeaderParameterKind
return p
}
func (p *Parameter) beForm() *Parameter {
p.data.Kind = FormParameterKind
return p
}
// Required sets the required field and returns the receiver
func (p *Parameter) Required(required bool) *Parameter {
p.data.Required = required
return p
}
// AllowMultiple sets the allowMultiple field and returns the receiver
func (p *Parameter) AllowMultiple(multiple bool) *Parameter {
p.data.AllowMultiple = multiple
return p
}
// AllowableValues sets the allowableValues field and returns the receiver
func (p *Parameter) AllowableValues(values map[string]string) *Parameter {
p.data.AllowableValues = values
return p
}
// DataType sets the dataType field and returns the receiver
func (p *Parameter) DataType(typeName string) *Parameter {
p.data.DataType = typeName
return p
}
// DataFormat sets the dataFormat field for Swagger UI
func (p *Parameter) DataFormat(formatName string) *Parameter {
p.data.DataFormat = formatName
return p
}
// DefaultValue sets the default value field and returns the receiver
func (p *Parameter) DefaultValue(stringRepresentation string) *Parameter {
p.data.DefaultValue = stringRepresentation
return p
}
// Description sets the description value field and returns the receiver
func (p *Parameter) Description(doc string) *Parameter {
p.data.Description = doc
return p
}
// CollectionFormat sets the collection format for an array type
func (p *Parameter) CollectionFormat(format CollectionFormat) *Parameter {
p.data.CollectionFormat = format.String()
return p
}
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"bytes"
"fmt"
"regexp"
"strings"
)
// PathExpression holds a compiled path expression (RegExp) needed to match against
// Http request paths and to extract path parameter values.
type pathExpression struct {
LiteralCount int // the number of literal characters (means those not resulting from template variable substitution)
VarNames []string // the names of parameters (enclosed by {}) in the path
VarCount int // the number of named parameters (enclosed by {}) in the path
Matcher *regexp.Regexp
Source string // Path as defined by the RouteBuilder
tokens []string
}
// NewPathExpression creates a PathExpression from the input URL path.
// Returns an error if the path is invalid.
func newPathExpression(path string) (*pathExpression, error) {
expression, literalCount, varNames, varCount, tokens := templateToRegularExpression(path)
compiled, err := regexp.Compile(expression)
if err != nil {
return nil, err
}
return &pathExpression{literalCount, varNames, varCount, compiled, expression, tokens}, nil
}
// http://jsr311.java.net/nonav/releases/1.1/spec/spec3.html#x3-370003.7.3
func templateToRegularExpression(template string) (expression string, literalCount int, varNames []string, varCount int, tokens []string) {
var buffer bytes.Buffer
buffer.WriteString("^")
//tokens = strings.Split(template, "/")
tokens = tokenizePath(template)
for _, each := range tokens {
if each == "" {
continue
}
buffer.WriteString("/")
if strings.HasPrefix(each, "{") {
// check for regular expression in variable
colon := strings.Index(each, ":")
var varName string
if colon != -1 {
// extract expression
varName = strings.TrimSpace(each[1:colon])
paramExpr := strings.TrimSpace(each[colon+1 : len(each)-1])
if paramExpr == "*" { // special case
buffer.WriteString("(.*)")
} else {
buffer.WriteString(fmt.Sprintf("(%s)", paramExpr)) // between colon and closing moustache
}
} else {
// plain var
varName = strings.TrimSpace(each[1 : len(each)-1])
buffer.WriteString("([^/]+?)")
}
varNames = append(varNames, varName)
varCount += 1
} else {
literalCount += len(each)
encoded := each // TODO URI encode
buffer.WriteString(regexp.QuoteMeta(encoded))
}
}
return strings.TrimRight(buffer.String(), "/") + "(/.*)?$", literalCount, varNames, varCount, tokens
}
package restful
import (
"bytes"
"strings"
)
// Copyright 2018 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
// PathProcessor is extra behaviour that a Router can provide to extract path parameters from the path.
// If a Router does not implement this interface then the default behaviour will be used.
type PathProcessor interface {
// ExtractParameters gets the path parameters defined in the route and webService from the urlPath
ExtractParameters(route *Route, webService *WebService, urlPath string) map[string]string
}
type defaultPathProcessor struct{}
// Extract the parameters from the request url path
func (d defaultPathProcessor) ExtractParameters(r *Route, _ *WebService, urlPath string) map[string]string {
urlParts := tokenizePath(urlPath)
pathParameters := map[string]string{}
for i, key := range r.pathParts {
var value string
if i >= len(urlParts) {
value = ""
} else {
value = urlParts[i]
}
if r.hasCustomVerb && hasCustomVerb(key) {
key = removeCustomVerb(key)
value = removeCustomVerb(value)
}
if strings.Index(key, "{") > -1 { // path-parameter
if colon := strings.Index(key, ":"); colon != -1 {
// extract by regex
regPart := key[colon+1 : len(key)-1]
keyPart := key[1:colon]
if regPart == "*" {
pathParameters[keyPart] = untokenizePath(i, urlParts)
break
} else {
pathParameters[keyPart] = value
}
} else {
// without enclosing {}
startIndex := strings.Index(key, "{")
endKeyIndex := strings.Index(key, "}")
suffixLength := len(key) - endKeyIndex - 1
endValueIndex := len(value) - suffixLength
pathParameters[key[startIndex+1:endKeyIndex]] = value[startIndex:endValueIndex]
}
}
}
return pathParameters
}
// Untokenize back into an URL path using the slash separator
func untokenizePath(offset int, parts []string) string {
var buffer bytes.Buffer
for p := offset; p < len(parts); p++ {
buffer.WriteString(parts[p])
// do not end
if p < len(parts)-1 {
buffer.WriteString("/")
}
}
return buffer.String()
}
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"compress/zlib"
"net/http"
)
var defaultRequestContentType string
// Request is a wrapper for a http Request that provides convenience methods
type Request struct {
Request *http.Request
pathParameters map[string]string
attributes map[string]interface{} // for storing request-scoped values
selectedRoutePath string // root path + route path that matched the request, e.g. /meetings/{id}/attendees
}
func NewRequest(httpRequest *http.Request) *Request {
return &Request{
Request: httpRequest,
pathParameters: map[string]string{},
attributes: map[string]interface{}{},
} // empty parameters, attributes
}
// If ContentType is missing or */* is given then fall back to this type, otherwise
// a "Unable to unmarshal content of type:" response is returned.
// Valid values are restful.MIME_JSON and restful.MIME_XML
// Example:
// restful.DefaultRequestContentType(restful.MIME_JSON)
func DefaultRequestContentType(mime string) {
defaultRequestContentType = mime
}
// PathParameter accesses the Path parameter value by its name
func (r *Request) PathParameter(name string) string {
return r.pathParameters[name]
}
// PathParameters accesses the Path parameter values
func (r *Request) PathParameters() map[string]string {
return r.pathParameters
}
// QueryParameter returns the (first) Query parameter value by its name
func (r *Request) QueryParameter(name string) string {
return r.Request.FormValue(name)
}
// QueryParameters returns the all the query parameters values by name
func (r *Request) QueryParameters(name string) []string {
return r.Request.URL.Query()[name]
}
// BodyParameter parses the body of the request (once for typically a POST or a PUT) and returns the value of the given name or an error.
func (r *Request) BodyParameter(name string) (string, error) {
err := r.Request.ParseForm()
if err != nil {
return "", err
}
return r.Request.PostFormValue(name), nil
}
// HeaderParameter returns the HTTP Header value of a Header name or empty if missing
func (r *Request) HeaderParameter(name string) string {
return r.Request.Header.Get(name)
}
// ReadEntity checks the Accept header and reads the content into the entityPointer.
func (r *Request) ReadEntity(entityPointer interface{}) (err error) {
contentType := r.Request.Header.Get(HEADER_ContentType)
contentEncoding := r.Request.Header.Get(HEADER_ContentEncoding)
// check if the request body needs decompression
if ENCODING_GZIP == contentEncoding {
gzipReader := currentCompressorProvider.AcquireGzipReader()
defer currentCompressorProvider.ReleaseGzipReader(gzipReader)
gzipReader.Reset(r.Request.Body)
r.Request.Body = gzipReader
} else if ENCODING_DEFLATE == contentEncoding {
zlibReader, err := zlib.NewReader(r.Request.Body)
if err != nil {
return err
}
r.Request.Body = zlibReader
}
// lookup the EntityReader, use defaultRequestContentType if needed and provided
entityReader, ok := entityAccessRegistry.accessorAt(contentType)
if !ok {
if len(defaultRequestContentType) != 0 {
entityReader, ok = entityAccessRegistry.accessorAt(defaultRequestContentType)
}
if !ok {
return NewError(http.StatusBadRequest, "Unable to unmarshal content of type:"+contentType)
}
}
return entityReader.Read(r, entityPointer)
}
// SetAttribute adds or replaces the attribute with the given value.
func (r *Request) SetAttribute(name string, value interface{}) {
r.attributes[name] = value
}
// Attribute returns the value associated to the given name. Returns nil if absent.
func (r Request) Attribute(name string) interface{} {
return r.attributes[name]
}
// SelectedRoutePath root path + route path that matched the request, e.g. /meetings/{id}/attendees
func (r Request) SelectedRoutePath() string {
return r.selectedRoutePath
}
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"bufio"
"errors"
"net"
"net/http"
)
// DefaultResponseMimeType is DEPRECATED, use DefaultResponseContentType(mime)
var DefaultResponseMimeType string
//PrettyPrintResponses controls the indentation feature of XML and JSON serialization
var PrettyPrintResponses = true
// Response is a wrapper on the actual http ResponseWriter
// It provides several convenience methods to prepare and write response content.
type Response struct {
http.ResponseWriter
requestAccept string // mime-type what the Http Request says it wants to receive
routeProduces []string // mime-types what the Route says it can produce
statusCode int // HTTP status code that has been written explicitly (if zero then net/http has written 200)
contentLength int // number of bytes written for the response body
prettyPrint bool // controls the indentation feature of XML and JSON serialization. It is initialized using var PrettyPrintResponses.
err error // err property is kept when WriteError is called
hijacker http.Hijacker // if underlying ResponseWriter supports it
}
// NewResponse creates a new response based on a http ResponseWriter.
func NewResponse(httpWriter http.ResponseWriter) *Response {
hijacker, _ := httpWriter.(http.Hijacker)
return &Response{ResponseWriter: httpWriter, routeProduces: []string{}, statusCode: http.StatusOK, prettyPrint: PrettyPrintResponses, hijacker: hijacker}
}
// DefaultResponseContentType set a default.
// If Accept header matching fails, fall back to this type.
// Valid values are restful.MIME_JSON and restful.MIME_XML
// Example:
// restful.DefaultResponseContentType(restful.MIME_JSON)
func DefaultResponseContentType(mime string) {
DefaultResponseMimeType = mime
}
// InternalServerError writes the StatusInternalServerError header.
// DEPRECATED, use WriteErrorString(http.StatusInternalServerError,reason)
func (r Response) InternalServerError() Response {
r.WriteHeader(http.StatusInternalServerError)
return r
}
// Hijack implements the http.Hijacker interface. This expands
// the Response to fulfill http.Hijacker if the underlying
// http.ResponseWriter supports it.
func (r *Response) Hijack() (net.Conn, *bufio.ReadWriter, error) {
if r.hijacker == nil {
return nil, nil, errors.New("http.Hijacker not implemented by underlying http.ResponseWriter")
}
return r.hijacker.Hijack()
}
// PrettyPrint changes whether this response must produce pretty (line-by-line, indented) JSON or XML output.
func (r *Response) PrettyPrint(bePretty bool) {
r.prettyPrint = bePretty
}
// AddHeader is a shortcut for .Header().Add(header,value)
func (r Response) AddHeader(header string, value string) Response {
r.Header().Add(header, value)
return r
}
// SetRequestAccepts tells the response what Mime-type(s) the HTTP request said it wants to accept. Exposed for testing.
func (r *Response) SetRequestAccepts(mime string) {
r.requestAccept = mime
}
// EntityWriter returns the registered EntityWriter that the entity (requested resource)
// can write according to what the request wants (Accept) and what the Route can produce or what the restful defaults say.
// If called before WriteEntity and WriteHeader then a false return value can be used to write a 406: Not Acceptable.
func (r *Response) EntityWriter() (EntityReaderWriter, bool) {
sorted := sortedMimes(r.requestAccept)
for _, eachAccept := range sorted {
for _, eachProduce := range r.routeProduces {
if eachProduce == eachAccept.media {
if w, ok := entityAccessRegistry.accessorAt(eachAccept.media); ok {
return w, true
}
}
}
if eachAccept.media == "*/*" {
for _, each := range r.routeProduces {
if w, ok := entityAccessRegistry.accessorAt(each); ok {
return w, true
}
}
}
}
// if requestAccept is empty
writer, ok := entityAccessRegistry.accessorAt(r.requestAccept)
if !ok {
// if not registered then fallback to the defaults (if set)
if DefaultResponseMimeType == MIME_JSON {
return entityAccessRegistry.accessorAt(MIME_JSON)
}
if DefaultResponseMimeType == MIME_XML {
return entityAccessRegistry.accessorAt(MIME_XML)
}
// Fallback to whatever the route says it can produce.
// https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
for _, each := range r.routeProduces {
if w, ok := entityAccessRegistry.accessorAt(each); ok {
return w, true
}
}
if trace {
traceLogger.Printf("no registered EntityReaderWriter found for %s", r.requestAccept)
}
}
return writer, ok
}
// WriteEntity calls WriteHeaderAndEntity with Http Status OK (200)
func (r *Response) WriteEntity(value interface{}) error {
return r.WriteHeaderAndEntity(http.StatusOK, value)
}
// WriteHeaderAndEntity marshals the value using the representation denoted by the Accept Header and the registered EntityWriters.
// If no Accept header is specified (or */*) then respond with the Content-Type as specified by the first in the Route.Produces.
// If an Accept header is specified then respond with the Content-Type as specified by the first in the Route.Produces that is matched with the Accept header.
// If the value is nil then no response is send except for the Http status. You may want to call WriteHeader(http.StatusNotFound) instead.
// If there is no writer available that can represent the value in the requested MIME type then Http Status NotAcceptable is written.
// Current implementation ignores any q-parameters in the Accept Header.
// Returns an error if the value could not be written on the response.
func (r *Response) WriteHeaderAndEntity(status int, value interface{}) error {
writer, ok := r.EntityWriter()
if !ok {
r.WriteHeader(http.StatusNotAcceptable)
return nil
}
return writer.Write(r, status, value)
}
// WriteAsXml is a convenience method for writing a value in xml (requires Xml tags on the value)
// It uses the standard encoding/xml package for marshalling the value ; not using a registered EntityReaderWriter.
func (r *Response) WriteAsXml(value interface{}) error {
return writeXML(r, http.StatusOK, MIME_XML, value)
}
// WriteHeaderAndXml is a convenience method for writing a status and value in xml (requires Xml tags on the value)
// It uses the standard encoding/xml package for marshalling the value ; not using a registered EntityReaderWriter.
func (r *Response) WriteHeaderAndXml(status int, value interface{}) error {
return writeXML(r, status, MIME_XML, value)
}
// WriteAsJson is a convenience method for writing a value in json.
// It uses the standard encoding/json package for marshalling the value ; not using a registered EntityReaderWriter.
func (r *Response) WriteAsJson(value interface{}) error {
return writeJSON(r, http.StatusOK, MIME_JSON, value)
}
// WriteJson is a convenience method for writing a value in Json with a given Content-Type.
// It uses the standard encoding/json package for marshalling the value ; not using a registered EntityReaderWriter.
func (r *Response) WriteJson(value interface{}, contentType string) error {
return writeJSON(r, http.StatusOK, contentType, value)
}
// WriteHeaderAndJson is a convenience method for writing the status and a value in Json with a given Content-Type.
// It uses the standard encoding/json package for marshalling the value ; not using a registered EntityReaderWriter.
func (r *Response) WriteHeaderAndJson(status int, value interface{}, contentType string) error {
return writeJSON(r, status, contentType, value)
}
// WriteError writes the http status and the error string on the response. err can be nil.
// Return an error if writing was not succesful.
func (r *Response) WriteError(httpStatus int, err error) (writeErr error) {
r.err = err
if err == nil {
writeErr = r.WriteErrorString(httpStatus, "")
} else {
writeErr = r.WriteErrorString(httpStatus, err.Error())
}
return writeErr
}
// WriteServiceError is a convenience method for a responding with a status and a ServiceError
func (r *Response) WriteServiceError(httpStatus int, err ServiceError) error {
r.err = err
return r.WriteHeaderAndEntity(httpStatus, err)
}
// WriteErrorString is a convenience method for an error status with the actual error
func (r *Response) WriteErrorString(httpStatus int, errorReason string) error {
if r.err == nil {
// if not called from WriteError
r.err = errors.New(errorReason)
}
r.WriteHeader(httpStatus)
if _, err := r.Write([]byte(errorReason)); err != nil {
return err
}
return nil
}
// Flush implements http.Flusher interface, which sends any buffered data to the client.
func (r *Response) Flush() {
if f, ok := r.ResponseWriter.(http.Flusher); ok {
f.Flush()
} else if trace {
traceLogger.Printf("ResponseWriter %v doesn't support Flush", r)
}
}
// WriteHeader is overridden to remember the Status Code that has been written.
// Changes to the Header of the response have no effect after this.
func (r *Response) WriteHeader(httpStatus int) {
r.statusCode = httpStatus
r.ResponseWriter.WriteHeader(httpStatus)
}
// StatusCode returns the code that has been written using WriteHeader.
func (r Response) StatusCode() int {
if 0 == r.statusCode {
// no status code has been written yet; assume OK
return http.StatusOK
}
return r.statusCode
}
// Write writes the data to the connection as part of an HTTP reply.
// Write is part of http.ResponseWriter interface.
func (r *Response) Write(bytes []byte) (int, error) {
written, err := r.ResponseWriter.Write(bytes)
r.contentLength += written
return written, err
}
// ContentLength returns the number of bytes written for the response content.
// Note that this value is only correct if all data is written through the Response using its Write* methods.
// Data written directly using the underlying http.ResponseWriter is not accounted for.
func (r Response) ContentLength() int {
return r.contentLength
}
// CloseNotify is part of http.CloseNotifier interface
func (r Response) CloseNotify() <-chan bool {
return r.ResponseWriter.(http.CloseNotifier).CloseNotify()
}
// Error returns the err created by WriteError
func (r Response) Error() error {
return r.err
}
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"net/http"
"strings"
)
// RouteFunction declares the signature of a function that can be bound to a Route.
type RouteFunction func(*Request, *Response)
// RouteSelectionConditionFunction declares the signature of a function that
// can be used to add extra conditional logic when selecting whether the route
// matches the HTTP request.
type RouteSelectionConditionFunction func(httpRequest *http.Request) bool
// Route binds a HTTP Method,Path,Consumes combination to a RouteFunction.
type Route struct {
Method string
Produces []string
Consumes []string
Path string // webservice root path + described path
Function RouteFunction
Filters []FilterFunction
If []RouteSelectionConditionFunction
// cached values for dispatching
relativePath string
pathParts []string
pathExpr *pathExpression // cached compilation of relativePath as RegExp
// documentation
Doc string
Notes string
Operation string
ParameterDocs []*Parameter
ResponseErrors map[int]ResponseError
DefaultResponse *ResponseError
ReadSample, WriteSample interface{} // structs that model an example request or response payload
// Extra information used to store custom information about the route.
Metadata map[string]interface{}
// marks a route as deprecated
Deprecated bool
//Overrides the container.contentEncodingEnabled
contentEncodingEnabled *bool
// indicate route path has custom verb
hasCustomVerb bool
}
// Initialize for Route
func (r *Route) postBuild() {
r.pathParts = tokenizePath(r.Path)
r.hasCustomVerb = hasCustomVerb(r.Path)
}
// Create Request and Response from their http versions
func (r *Route) wrapRequestResponse(httpWriter http.ResponseWriter, httpRequest *http.Request, pathParams map[string]string) (*Request, *Response) {
wrappedRequest := NewRequest(httpRequest)
wrappedRequest.pathParameters = pathParams
wrappedRequest.selectedRoutePath = r.Path
wrappedResponse := NewResponse(httpWriter)
wrappedResponse.requestAccept = httpRequest.Header.Get(HEADER_Accept)
wrappedResponse.routeProduces = r.Produces
return wrappedRequest, wrappedResponse
}
func stringTrimSpaceCutset(r rune) bool {
return r == ' '
}
// Return whether the mimeType matches to what this Route can produce.
func (r Route) matchesAccept(mimeTypesWithQuality string) bool {
remaining := mimeTypesWithQuality
for {
var mimeType string
if end := strings.Index(remaining, ","); end == -1 {
mimeType, remaining = remaining, ""
} else {
mimeType, remaining = remaining[:end], remaining[end+1:]
}
if quality := strings.Index(mimeType, ";"); quality != -1 {
mimeType = mimeType[:quality]
}
mimeType = strings.TrimFunc(mimeType, stringTrimSpaceCutset)
if mimeType == "*/*" {
return true
}
for _, producibleType := range r.Produces {
if producibleType == "*/*" || producibleType == mimeType {
return true
}
}
if len(remaining) == 0 {
return false
}
}
}
// Return whether this Route can consume content with a type specified by mimeTypes (can be empty).
func (r Route) matchesContentType(mimeTypes string) bool {
if len(r.Consumes) == 0 {
// did not specify what it can consume ; any media type (“*/*”) is assumed
return true
}
if len(mimeTypes) == 0 {
// idempotent methods with (most-likely or guaranteed) empty content match missing Content-Type
m := r.Method
if m == "GET" || m == "HEAD" || m == "OPTIONS" || m == "DELETE" || m == "TRACE" {
return true
}
// proceed with default
mimeTypes = MIME_OCTET
}
remaining := mimeTypes
for {
var mimeType string
if end := strings.Index(remaining, ","); end == -1 {
mimeType, remaining = remaining, ""
} else {
mimeType, remaining = remaining[:end], remaining[end+1:]
}
if quality := strings.Index(mimeType, ";"); quality != -1 {
mimeType = mimeType[:quality]
}
mimeType = strings.TrimFunc(mimeType, stringTrimSpaceCutset)
for _, consumeableType := range r.Consumes {
if consumeableType == "*/*" || consumeableType == mimeType {
return true
}
}
if len(remaining) == 0 {
return false
}
}
}
// Tokenize an URL path using the slash separator ; the result does not have empty tokens
func tokenizePath(path string) []string {
if "/" == path {
return nil
}
return strings.Split(strings.Trim(path, "/"), "/")
}
// for debugging
func (r Route) String() string {
return r.Method + " " + r.Path
}
// EnableContentEncoding (default=false) allows for GZIP or DEFLATE encoding of responses. Overrides the container.contentEncodingEnabled value.
func (r Route) EnableContentEncoding(enabled bool) {
r.contentEncodingEnabled = &enabled
}
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"fmt"
"os"
"reflect"
"runtime"
"strings"
"sync/atomic"
"github.com/emicklei/go-restful/log"
)
// RouteBuilder is a helper to construct Routes.
type RouteBuilder struct {
rootPath string
currentPath string
produces []string
consumes []string
httpMethod string // required
function RouteFunction // required
filters []FilterFunction
conditions []RouteSelectionConditionFunction
typeNameHandleFunc TypeNameHandleFunction // required
// documentation
doc string
notes string
operation string
readSample, writeSample interface{}
parameters []*Parameter
errorMap map[int]ResponseError
defaultResponse *ResponseError
metadata map[string]interface{}
deprecated bool
contentEncodingEnabled *bool
}
// Do evaluates each argument with the RouteBuilder itself.
// This allows you to follow DRY principles without breaking the fluent programming style.
// Example:
// ws.Route(ws.DELETE("/{name}").To(t.deletePerson).Do(Returns200, Returns500))
//
// func Returns500(b *RouteBuilder) {
// b.Returns(500, "Internal Server Error", restful.ServiceError{})
// }
func (b *RouteBuilder) Do(oneArgBlocks ...func(*RouteBuilder)) *RouteBuilder {
for _, each := range oneArgBlocks {
each(b)
}
return b
}
// To bind the route to a function.
// If this route is matched with the incoming Http Request then call this function with the *Request,*Response pair. Required.
func (b *RouteBuilder) To(function RouteFunction) *RouteBuilder {
b.function = function
return b
}
// Method specifies what HTTP method to match. Required.
func (b *RouteBuilder) Method(method string) *RouteBuilder {
b.httpMethod = method
return b
}
// Produces specifies what MIME types can be produced ; the matched one will appear in the Content-Type Http header.
func (b *RouteBuilder) Produces(mimeTypes ...string) *RouteBuilder {
b.produces = mimeTypes
return b
}
// Consumes specifies what MIME types can be consumes ; the Accept Http header must matched any of these
func (b *RouteBuilder) Consumes(mimeTypes ...string) *RouteBuilder {
b.consumes = mimeTypes
return b
}
// Path specifies the relative (w.r.t WebService root path) URL path to match. Default is "/".
func (b *RouteBuilder) Path(subPath string) *RouteBuilder {
b.currentPath = subPath
return b
}
// Doc tells what this route is all about. Optional.
func (b *RouteBuilder) Doc(documentation string) *RouteBuilder {
b.doc = documentation
return b
}
// Notes is a verbose explanation of the operation behavior. Optional.
func (b *RouteBuilder) Notes(notes string) *RouteBuilder {
b.notes = notes
return b
}
// Reads tells what resource type will be read from the request payload. Optional.
// A parameter of type "body" is added ,required is set to true and the dataType is set to the qualified name of the sample's type.
func (b *RouteBuilder) Reads(sample interface{}, optionalDescription ...string) *RouteBuilder {
fn := b.typeNameHandleFunc
if fn == nil {
fn = reflectTypeName
}
typeAsName := fn(sample)
description := ""
if len(optionalDescription) > 0 {
description = optionalDescription[0]
}
b.readSample = sample
bodyParameter := &Parameter{&ParameterData{Name: "body", Description: description}}
bodyParameter.beBody()
bodyParameter.Required(true)
bodyParameter.DataType(typeAsName)
b.Param(bodyParameter)
return b
}
// ParameterNamed returns a Parameter already known to the RouteBuilder. Returns nil if not.
// Use this to modify or extend information for the Parameter (through its Data()).
func (b RouteBuilder) ParameterNamed(name string) (p *Parameter) {
for _, each := range b.parameters {
if each.Data().Name == name {
return each
}
}
return p
}
// Writes tells what resource type will be written as the response payload. Optional.
func (b *RouteBuilder) Writes(sample interface{}) *RouteBuilder {
b.writeSample = sample
return b
}
// Param allows you to document the parameters of the Route. It adds a new Parameter (does not check for duplicates).
func (b *RouteBuilder) Param(parameter *Parameter) *RouteBuilder {
if b.parameters == nil {
b.parameters = []*Parameter{}
}
b.parameters = append(b.parameters, parameter)
return b
}
// Operation allows you to document what the actual method/function call is of the Route.
// Unless called, the operation name is derived from the RouteFunction set using To(..).
func (b *RouteBuilder) Operation(name string) *RouteBuilder {
b.operation = name
return b
}
// ReturnsError is deprecated, use Returns instead.
func (b *RouteBuilder) ReturnsError(code int, message string, model interface{}) *RouteBuilder {
log.Print("ReturnsError is deprecated, use Returns instead.")
return b.Returns(code, message, model)
}
// Returns allows you to document what responses (errors or regular) can be expected.
// The model parameter is optional ; either pass a struct instance or use nil if not applicable.
func (b *RouteBuilder) Returns(code int, message string, model interface{}) *RouteBuilder {
err := ResponseError{
Code: code,
Message: message,
Model: model,
IsDefault: false, // this field is deprecated, use default response instead.
}
// lazy init because there is no NewRouteBuilder (yet)
if b.errorMap == nil {
b.errorMap = map[int]ResponseError{}
}
b.errorMap[code] = err
return b
}
// ReturnsWithHeaders is similar to Returns, but can specify response headers
func (b *RouteBuilder) ReturnsWithHeaders(code int, message string, model interface{}, headers map[string]Header) *RouteBuilder {
b.Returns(code, message, model)
err := b.errorMap[code]
err.Headers = headers
b.errorMap[code] = err
return b
}
// DefaultReturns is a special Returns call that sets the default of the response.
func (b *RouteBuilder) DefaultReturns(message string, model interface{}) *RouteBuilder {
b.defaultResponse = &ResponseError{
Message: message,
Model: model,
}
return b
}
// Metadata adds or updates a key=value pair to the metadata map.
func (b *RouteBuilder) Metadata(key string, value interface{}) *RouteBuilder {
if b.metadata == nil {
b.metadata = map[string]interface{}{}
}
b.metadata[key] = value
return b
}
// Deprecate sets the value of deprecated to true. Deprecated routes have a special UI treatment to warn against use
func (b *RouteBuilder) Deprecate() *RouteBuilder {
b.deprecated = true
return b
}
// ResponseError represents a response; not necessarily an error.
type ResponseError struct {
Code int
Message string
Model interface{}
Headers map[string]Header
IsDefault bool
}
// Header describes a header for a response of the API
//
// For more information: http://goo.gl/8us55a#headerObject
type Header struct {
*Items
Description string
}
// Items describe swagger simple schemas for headers
type Items struct {
Type string
Format string
Items *Items
CollectionFormat string
Default interface{}
}
func (b *RouteBuilder) servicePath(path string) *RouteBuilder {
b.rootPath = path
return b
}
// Filter appends a FilterFunction to the end of filters for this Route to build.
func (b *RouteBuilder) Filter(filter FilterFunction) *RouteBuilder {
b.filters = append(b.filters, filter)
return b
}
// If sets a condition function that controls matching the Route based on custom logic.
// The condition function is provided the HTTP request and should return true if the route
// should be considered.
//
// Efficiency note: the condition function is called before checking the method, produces, and
// consumes criteria, so that the correct HTTP status code can be returned.
//
// Lifecycle note: no filter functions have been called prior to calling the condition function,
// so the condition function should not depend on any context that might be set up by container
// or route filters.
func (b *RouteBuilder) If(condition RouteSelectionConditionFunction) *RouteBuilder {
b.conditions = append(b.conditions, condition)
return b
}
// ContentEncodingEnabled allows you to override the Containers value for auto-compressing this route response.
func (b *RouteBuilder) ContentEncodingEnabled(enabled bool) *RouteBuilder {
b.contentEncodingEnabled = &enabled
return b
}
// If no specific Route path then set to rootPath
// If no specific Produces then set to rootProduces
// If no specific Consumes then set to rootConsumes
func (b *RouteBuilder) copyDefaults(rootProduces, rootConsumes []string) {
if len(b.produces) == 0 {
b.produces = rootProduces
}
if len(b.consumes) == 0 {
b.consumes = rootConsumes
}
}
// typeNameHandler sets the function that will convert types to strings in the parameter
// and model definitions.
func (b *RouteBuilder) typeNameHandler(handler TypeNameHandleFunction) *RouteBuilder {
b.typeNameHandleFunc = handler
return b
}
// Build creates a new Route using the specification details collected by the RouteBuilder
func (b *RouteBuilder) Build() Route {
pathExpr, err := newPathExpression(b.currentPath)
if err != nil {
log.Printf("Invalid path:%s because:%v", b.currentPath, err)
os.Exit(1)
}
if b.function == nil {
log.Printf("No function specified for route:" + b.currentPath)
os.Exit(1)
}
operationName := b.operation
if len(operationName) == 0 && b.function != nil {
// extract from definition
operationName = nameOfFunction(b.function)
}
route := Route{
Method: b.httpMethod,
Path: concatPath(b.rootPath, b.currentPath),
Produces: b.produces,
Consumes: b.consumes,
Function: b.function,
Filters: b.filters,
If: b.conditions,
relativePath: b.currentPath,
pathExpr: pathExpr,
Doc: b.doc,
Notes: b.notes,
Operation: operationName,
ParameterDocs: b.parameters,
ResponseErrors: b.errorMap,
DefaultResponse: b.defaultResponse,
ReadSample: b.readSample,
WriteSample: b.writeSample,
Metadata: b.metadata,
Deprecated: b.deprecated,
contentEncodingEnabled: b.contentEncodingEnabled,
}
route.postBuild()
return route
}
func concatPath(path1, path2 string) string {
return strings.TrimRight(path1, "/") + "/" + strings.TrimLeft(path2, "/")
}
var anonymousFuncCount int32
// nameOfFunction returns the short name of the function f for documentation.
// It uses a runtime feature for debugging ; its value may change for later Go versions.
func nameOfFunction(f interface{}) string {
fun := runtime.FuncForPC(reflect.ValueOf(f).Pointer())
tokenized := strings.Split(fun.Name(), ".")
last := tokenized[len(tokenized)-1]
last = strings.TrimSuffix(last, ")·fm") // < Go 1.5
last = strings.TrimSuffix(last, ")-fm") // Go 1.5
last = strings.TrimSuffix(last, "·fm") // < Go 1.5
last = strings.TrimSuffix(last, "-fm") // Go 1.5
if last == "func1" { // this could mean conflicts in API docs
val := atomic.AddInt32(&anonymousFuncCount, 1)
last = "func" + fmt.Sprintf("%d", val)
atomic.StoreInt32(&anonymousFuncCount, val)
}
return last
}
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import "net/http"
// A RouteSelector finds the best matching Route given the input HTTP Request
// RouteSelectors can optionally also implement the PathProcessor interface to also calculate the
// path parameters after the route has been selected.
type RouteSelector interface {
// SelectRoute finds a Route given the input HTTP Request and a list of WebServices.
// It returns a selected Route and its containing WebService or an error indicating
// a problem.
SelectRoute(
webServices []*WebService,
httpRequest *http.Request) (selectedService *WebService, selected *Route, err error)
}
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import "fmt"
// ServiceError is a transport object to pass information about a non-Http error occurred in a WebService while processing a request.
type ServiceError struct {
Code int
Message string
}
// NewError returns a ServiceError using the code and reason
func NewError(code int, message string) ServiceError {
return ServiceError{Code: code, Message: message}
}
// Error returns a text representation of the service error
func (s ServiceError) Error() string {
return fmt.Sprintf("[ServiceError:%v] %v", s.Code, s.Message)
}
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"net/http"
)
// DefaultContainer is a restful.Container that uses http.DefaultServeMux
var DefaultContainer *Container
func init() {
DefaultContainer = NewContainer()
DefaultContainer.ServeMux = http.DefaultServeMux
}
// If set the true then panics will not be caught to return HTTP 500.
// In that case, Route functions are responsible for handling any error situation.
// Default value is false = recover from panics. This has performance implications.
// OBSOLETE ; use restful.DefaultContainer.DoNotRecover(true)
var DoNotRecover = false
// Add registers a new WebService add it to the DefaultContainer.
func Add(service *WebService) {
DefaultContainer.Add(service)
}
// Filter appends a container FilterFunction from the DefaultContainer.
// These are called before dispatching a http.Request to a WebService.
func Filter(filter FilterFunction) {
DefaultContainer.Filter(filter)
}
// RegisteredWebServices returns the collections of WebServices from the DefaultContainer
func RegisteredWebServices() []*WebService {
return DefaultContainer.RegisteredWebServices()
}
language: go
go:
- 1.8
- 1.7
install:
- if ! go get code.google.com/p/go.tools/cmd/cover; then go get golang.org/x/tools/cmd/cover; fi
- go get github.com/jessevdk/go-flags
script:
- go get
- go test -cover ./...
notifications:
email: false
module github.com/evanphx/json-patch
go 1.12
require github.com/pkg/errors v0.8.1
github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
......@@ -213,6 +213,10 @@ func (n *lazyNode) equal(o *lazyNode) bool {
return false
}
if (v == nil) != (ov == nil) {
return false
}
if v == nil && ov == nil {
continue
}
......
# OSX leaves these everywhere on SMB shares
._*
# Eclipse files
.classpath
.project
.settings/**
# Emacs save files
*~
# Vim-related files
[._]*.s[a-w][a-z]
[._]s[a-w][a-z]
*.un~
Session.vim
.netrwhist
# Go test binaries
*.test
language: go
go:
- 1.3
- 1.4
script:
- go test
- go build
# YAML marshaling and unmarshaling support for Go
[![Build Status](https://travis-ci.org/ghodss/yaml.svg)](https://travis-ci.org/ghodss/yaml)
## Introduction
A wrapper around [go-yaml](https://github.com/go-yaml/yaml) designed to enable a better way of handling YAML when marshaling to and from structs.
In short, this library first converts YAML to JSON using go-yaml and then uses `json.Marshal` and `json.Unmarshal` to convert to or from the struct. This means that it effectively reuses the JSON struct tags as well as the custom JSON methods `MarshalJSON` and `UnmarshalJSON` unlike go-yaml. For a detailed overview of the rationale behind this method, [see this blog post](http://ghodss.com/2014/the-right-way-to-handle-yaml-in-golang/).
## Compatibility
This package uses [go-yaml](https://github.com/go-yaml/yaml) and therefore supports [everything go-yaml supports](https://github.com/go-yaml/yaml#compatibility).
## Caveats
**Caveat #1:** When using `yaml.Marshal` and `yaml.Unmarshal`, binary data should NOT be preceded with the `!!binary` YAML tag. If you do, go-yaml will convert the binary data from base64 to native binary data, which is not compatible with JSON. You can still use binary in your YAML files though - just store them without the `!!binary` tag and decode the base64 in your code (e.g. in the custom JSON methods `MarshalJSON` and `UnmarshalJSON`). This also has the benefit that your YAML and your JSON binary data will be decoded exactly the same way. As an example:
```
BAD:
exampleKey: !!binary gIGC
GOOD:
exampleKey: gIGC
... and decode the base64 data in your code.
```
**Caveat #2:** When using `YAMLToJSON` directly, maps with keys that are maps will result in an error since this is not supported by JSON. This error will occur in `Unmarshal` as well since you can't unmarshal map keys anyways since struct fields can't be keys.
## Installation and usage
To install, run:
```
$ go get github.com/ghodss/yaml
```
And import using:
```
import "github.com/ghodss/yaml"
```
Usage is very similar to the JSON library:
```go
package main
import (
"fmt"
"github.com/ghodss/yaml"
)
type Person struct {
Name string `json:"name"` // Affects YAML field names too.
Age int `json:"age"`
}
func main() {
// Marshal a Person struct to YAML.
p := Person{"John", 30}
y, err := yaml.Marshal(p)
if err != nil {
fmt.Printf("err: %v\n", err)
return
}
fmt.Println(string(y))
/* Output:
age: 30
name: John
*/
// Unmarshal the YAML back into a Person struct.
var p2 Person
err = yaml.Unmarshal(y, &p2)
if err != nil {
fmt.Printf("err: %v\n", err)
return
}
fmt.Println(p2)
/* Output:
{John 30}
*/
}
```
`yaml.YAMLToJSON` and `yaml.JSONToYAML` methods are also available:
```go
package main
import (
"fmt"
"github.com/ghodss/yaml"
)
func main() {
j := []byte(`{"name": "John", "age": 30}`)
y, err := yaml.JSONToYAML(j)
if err != nil {
fmt.Printf("err: %v\n", err)
return
}
fmt.Println(string(y))
/* Output:
name: John
age: 30
*/
j2, err := yaml.YAMLToJSON(y)
if err != nil {
fmt.Printf("err: %v\n", err)
return
}
fmt.Println(string(j2))
/* Output:
{"age":30,"name":"John"}
*/
}
```
# top-most EditorConfig file
root = true
# Unix-style newlines with a newline ending every file
[*]
end_of_line = lf
insert_final_newline = true
indent_style = space
indent_size = 2
trim_trailing_whitespace = true
# Set default charset
[*.{js,py,go,scala,rb,java,html,css,less,sass,md}]
charset = utf-8
# Tab indentation (no size specified)
[*.go]
indent_style = tab
[*.md]
trim_trailing_whitespace = false
# Matches the exact files either package.json or .travis.yml
[{package.json,.travis.yml}]
indent_style = space
indent_size = 2
after_success:
- bash <(curl -s https://codecov.io/bash)
go:
- 1.11.x
- 1.12.x
install:
- GO111MODULE=off go get -u gotest.tools/gotestsum
env:
- GO111MODULE=on
language: go
notifications:
slack:
secure: 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
script:
- gotestsum -f short-verbose -- -race -coverprofile=coverage.txt -covermode=atomic ./...
# gojsonpointer [![Build Status](https://travis-ci.org/go-openapi/jsonpointer.svg?branch=master)](https://travis-ci.org/go-openapi/jsonpointer) [![codecov](https://codecov.io/gh/go-openapi/jsonpointer/branch/master/graph/badge.svg)](https://codecov.io/gh/go-openapi/jsonpointer) [![Slack Status](https://slackin.goswagger.io/badge.svg)](https://slackin.goswagger.io)
[![license](http://img.shields.io/badge/license-Apache%20v2-orange.svg)](https://raw.githubusercontent.com/go-openapi/jsonpointer/master/LICENSE) [![GoDoc](https://godoc.org/github.com/go-openapi/jsonpointer?status.svg)](http://godoc.org/github.com/go-openapi/jsonpointer)
An implementation of JSON Pointer - Go language
## Status
Completed YES
Tested YES
## References
http://tools.ietf.org/html/draft-ietf-appsawg-json-pointer-07
### Note
The 4.Evaluation part of the previous reference, starting with 'If the currently referenced value is a JSON array, the reference token MUST contain either...' is not implemented.
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文件模式从 100755 更改为 100644
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