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0f1cdfa5
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go-ethereum
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体验新版 GitCode,发现更多精彩内容 >>
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0f1cdfa5
编写于
6月 08, 2015
作者:
J
Jeffrey Wilcke
浏览文件
操作
浏览文件
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差异文件
Merge pull request #1193 from tgerring/hotbackup
Improve export command
上级
81ceac1b
4ab0cedf
变更
3
显示空白变更内容
内联
并排
Showing
3 changed file
with
55 addition
and
5 deletion
+55
-5
cmd/geth/chaincmd.go
cmd/geth/chaincmd.go
+26
-2
cmd/utils/cmd.go
cmd/utils/cmd.go
+15
-0
core/chain_manager.go
core/chain_manager.go
+14
-3
未找到文件。
cmd/geth/chaincmd.go
浏览文件 @
0f1cdfa5
...
...
@@ -26,6 +26,12 @@ var (
Action
:
exportChain
,
Name
:
"export"
,
Usage
:
`export blockchain into file`
,
Description
:
`
Requires a first argument of the file to write to.
Optional second and third arguments control the first and
last block to write. In this mode, the file will be appended
if already existing.
`
,
}
upgradedbCommand
=
cli
.
Command
{
Action
:
upgradeDB
,
...
...
@@ -63,12 +69,30 @@ func importChain(ctx *cli.Context) {
}
func
exportChain
(
ctx
*
cli
.
Context
)
{
if
len
(
ctx
.
Args
())
!=
1
{
if
len
(
ctx
.
Args
())
<
1
{
utils
.
Fatalf
(
"This command requires an argument."
)
}
chain
,
_
,
_
,
_
:=
utils
.
MakeChain
(
ctx
)
start
:=
time
.
Now
()
if
err
:=
utils
.
ExportChain
(
chain
,
ctx
.
Args
()
.
First
());
err
!=
nil
{
var
err
error
fp
:=
ctx
.
Args
()
.
First
()
if
len
(
ctx
.
Args
())
<
3
{
err
=
utils
.
ExportChain
(
chain
,
fp
)
}
else
{
// This can be improved to allow for numbers larger than 9223372036854775807
first
,
ferr
:=
strconv
.
ParseInt
(
ctx
.
Args
()
.
Get
(
1
),
10
,
64
)
last
,
lerr
:=
strconv
.
ParseInt
(
ctx
.
Args
()
.
Get
(
2
),
10
,
64
)
if
ferr
!=
nil
||
lerr
!=
nil
{
utils
.
Fatalf
(
"Export error in parsing parameters: block number not an integer
\n
"
)
}
if
first
<
0
||
last
<
0
{
utils
.
Fatalf
(
"Export error: block number must be greater than 0
\n
"
)
}
err
=
utils
.
ExportAppendChain
(
chain
,
fp
,
uint64
(
first
),
uint64
(
last
))
}
if
err
!=
nil
{
utils
.
Fatalf
(
"Export error: %v
\n
"
,
err
)
}
fmt
.
Printf
(
"Export done in %v"
,
time
.
Since
(
start
))
...
...
cmd/utils/cmd.go
浏览文件 @
0f1cdfa5
...
...
@@ -268,3 +268,18 @@ func ExportChain(chainmgr *core.ChainManager, fn string) error {
glog
.
Infoln
(
"Exported blockchain to"
,
fn
)
return
nil
}
func
ExportAppendChain
(
chainmgr
*
core
.
ChainManager
,
fn
string
,
first
uint64
,
last
uint64
)
error
{
glog
.
Infoln
(
"Exporting blockchain to"
,
fn
)
// TODO verify mode perms
fh
,
err
:=
os
.
OpenFile
(
fn
,
os
.
O_CREATE
|
os
.
O_APPEND
|
os
.
O_WRONLY
,
os
.
ModePerm
)
if
err
!=
nil
{
return
err
}
defer
fh
.
Close
()
if
err
:=
chainmgr
.
ExportN
(
fh
,
first
,
last
);
err
!=
nil
{
return
err
}
glog
.
Infoln
(
"Exported blockchain to"
,
fn
)
return
nil
}
core/chain_manager.go
浏览文件 @
0f1cdfa5
...
...
@@ -347,13 +347,24 @@ func (bc *ChainManager) ResetWithGenesisBlock(gb *types.Block) {
// Export writes the active chain to the given writer.
func
(
self
*
ChainManager
)
Export
(
w
io
.
Writer
)
error
{
if
err
:=
self
.
ExportN
(
w
,
uint64
(
0
),
self
.
currentBlock
.
NumberU64
());
err
!=
nil
{
return
err
}
return
nil
}
// ExportN writes a subset of the active chain to the given writer.
func
(
self
*
ChainManager
)
ExportN
(
w
io
.
Writer
,
first
uint64
,
last
uint64
)
error
{
self
.
mu
.
RLock
()
defer
self
.
mu
.
RUnlock
()
glog
.
V
(
logger
.
Info
)
.
Infof
(
"exporting %v blocks...
\n
"
,
self
.
currentBlock
.
Header
()
.
Number
)
last
:=
self
.
currentBlock
.
NumberU64
()
if
first
>
last
{
return
fmt
.
Errorf
(
"export failed: first (%d) is greater than last (%d)"
,
first
,
last
)
}
glog
.
V
(
logger
.
Info
)
.
Infof
(
"exporting %d blocks...
\n
"
,
last
-
first
+
1
)
for
nr
:=
uint64
(
1
)
;
nr
<=
last
;
nr
++
{
for
nr
:=
first
;
nr
<=
last
;
nr
++
{
block
:=
self
.
GetBlockByNumber
(
nr
)
if
block
==
nil
{
return
fmt
.
Errorf
(
"export failed on #%d: not found"
,
nr
)
...
...
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