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
+	}
 
 	platform, family, version, err := GetPlatformInformation()
 	if err == nil {
@@ -46,10 +45,9 @@ 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
 		}
+	}
 
 	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
+	}
 
 	platform, family, version, err := GetPlatformInformation()
 	if err == nil {
@@ -51,11 +50,10 @@ 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
 		}
+	}
 
 	return ret, nil
 }

host/host_linux.go

@@ -26,16 +26,15 @@ type LSB struct {
 }
 
 func HostInfo() (*HostInfoStat, error) {
-	hostname, err := os.Hostname()
-	if err != nil {
-		return nil, err
-	}
-
 	ret := &HostInfoStat{
-		Hostname: hostname,
 		OS: runtime.GOOS,
 	}
 
+	hostname, err := os.Hostname()
+	if err == nil {
+		ret.Hostname = hostname
+	}
+
 	platform, family, version, err := GetPlatformInformation()
 	if err == nil {
 		ret.Platform = platform

host/host_windows.go

@@ -3,11 +3,11 @@
 package host
 
 import (
-	"os"
 	"fmt"
-	"time"
+	"os"
 	"runtime"
 	"strings"
+	"time"
 
 	"github.com/StackExchange/wmi"
 
@@ -29,23 +29,20 @@ type Win32_OperatingSystem struct {
 }
 
 func HostInfo() (*HostInfoStat, error) {
-	hostname, err := os.Hostname()
-	if err != nil {
-		return nil, err
-	}
-
 	ret := &HostInfoStat{
-		Hostname: hostname,
 		OS: runtime.GOOS,
 	}
 
+	hostname, err := os.Hostname()
+	if err == nil {
+		ret.Hostname = hostname
+	}
+
 	platform, family, version, err := GetPlatformInformation()
 	if err == nil {
 		ret.Platform = platform
 		ret.PlatformFamily = family
 		ret.PlatformVersion = version
-	} else {
-	  return ret, err
 	}
 
 	ret.Uptime, err = BootTime()