shirou/gopsutil#90 make hostinfo more robust

host/host_darwin.go

@@ -23,10 +23,9 @@ func HostInfo() (*HostInfoStat, error) {
 	}
 
 	hostname, err := os.Hostname()
-	if err != nil {
-		return ret, err
+	if err == nil {
+		ret.Hostname = hostname
 	}
-	ret.Hostname = hostname
 
 	platform, family, version, err := GetPlatformInformation()
 	if err == nil {
@@ -46,9 +45,8 @@ func HostInfo() (*HostInfoStat, error) {
 		v := strings.Replace(values[2], ",", "", 1)
 		t, err := strconv.ParseUint(v, 10, 64)
 		if err != nil {
-			return ret, err
+			ret.Uptime = t
 		}
-		ret.Uptime = t
 	}
 
 	return ret, nil

host/host_freebsd.go

@@ -29,10 +29,9 @@ func HostInfo() (*HostInfoStat, error) {
 	}
 
 	hostname, err := os.Hostname()
-	if err != nil {
-		return ret, err
+	if err == nil {
+		ret.Hostname = hostname
 	}
-	ret.Hostname = hostname
 
 	platform, family, version, err := GetPlatformInformation()
 	if err == nil {
@@ -51,10 +50,9 @@ func HostInfo() (*HostInfoStat, error) {
 		// ex: { sec = 1392261637, usec = 627534 } Thu Feb 13 12:20:37 2014
 		v := strings.Replace(values[2], ",", "", 1)
 		t, err := strconv.ParseUint(v, 10, 64)
-		if err != nil {
-			return ret, err
+		if err == nil {
+			ret.Uptime = t
 		}
-		ret.Uptime = t
 	}
 
 	return ret, nil

host/host_linux.go

@@ -26,14 +26,13 @@ type LSB struct {
 }
 
 func HostInfo() (*HostInfoStat, error) {
-	hostname, err := os.Hostname()
-	if err != nil {
-		return nil, err
+	ret := &HostInfoStat{
+		OS: runtime.GOOS,
 	}
 
-	ret := &HostInfoStat{
-		Hostname: hostname,
-		OS:       runtime.GOOS,
+	hostname, err := os.Hostname()
+	if err == nil {
+		ret.Hostname = hostname
 	}
 
 	platform, family, version, err := GetPlatformInformation()

host/host_windows.go

@@ -3,11 +3,11 @@
 package host
 
 import (
-	"os"
 	"fmt"
-	"time"
+	"os"
 	"runtime"
 	"strings"
+	"time"
 
 	"github.com/StackExchange/wmi"
 
@@ -17,26 +17,25 @@ import (
 
 var (
 	procGetSystemTimeAsFileTime = common.Modkernel32.NewProc("GetSystemTimeAsFileTime")
-	osInfo *Win32_OperatingSystem
+	osInfo                      *Win32_OperatingSystem
 )
 
 type Win32_OperatingSystem struct {
-	Version     string
-	Caption     string
-	ProductType uint32
-	BuildNumber string
+	Version        string
+	Caption        string
+	ProductType    uint32
+	BuildNumber    string
 	LastBootUpTime time.Time
 }
 
 func HostInfo() (*HostInfoStat, error) {
-	hostname, err := os.Hostname()
-	if err != nil {
-		return nil, err
+	ret := &HostInfoStat{
+		OS: runtime.GOOS,
 	}
 
-	ret := &HostInfoStat{
-		Hostname: hostname,
-		OS:       runtime.GOOS,
+	hostname, err := os.Hostname()
+	if err == nil {
+		ret.Hostname = hostname
 	}
 
 	platform, family, version, err := GetPlatformInformation()
@@ -44,15 +43,13 @@ func HostInfo() (*HostInfoStat, error) {
 		ret.Platform = platform
 		ret.PlatformFamily = family
 		ret.PlatformVersion = version
-	} else {
-	  return ret, err
 	}
-	
+
 	ret.Uptime, err = BootTime()
 	if err != nil {
 		return ret, err
 	}
-	
+
 	procs, err := process.Pids()
 	if err != nil {
 		return ret, err
@@ -70,9 +67,9 @@ func GetOSInfo() (Win32_OperatingSystem, error) {
 	if err != nil {
 		return Win32_OperatingSystem{}, err
 	}
-	
+
 	osInfo = &dst[0]
-	
+
 	return dst[0], nil
 }
 
@@ -98,7 +95,7 @@ func GetPlatformInformation() (platform string, family string, version string, e
 
 	// Platform
 	platform = strings.Trim(osInfo.Caption, " ")
-	
+
 	// PlatformFamily
 	switch osInfo.ProductType {
 	case 1:
@@ -108,7 +105,7 @@ func GetPlatformInformation() (platform string, family string, version string, e
 	case 3:
 		family = "Server"
 	}
-	
+
 	// Platform Version
 	version = fmt.Sprintf("%s Build %s", osInfo.Version, osInfo.BuildNumber)