implements String() which return as JSON to every structs.

README.rst

@@ -26,7 +26,6 @@ Usage
 ::
 
    import (
-   	"encoding/json"
    	"fmt"
 
    	"github.com/shirou/gopsutil"
@@ -35,12 +34,11 @@ Usage
    func main() {
    	v, _ := gopsutil.VirtualMemory()
 
-   	// return value is struct
+   	// almost every return value is struct
    	fmt.Printf("Total: %v, Free:%v, UsedPercent:%f%%\n", v.Total, v.Free, v.UsedPercent)
 
-   	// convert to JSON
-   	d, _ := json.Marshal(v)
-   	fmt.Printf("%s\n", d)
+   	// convert to JSON. String() is also implemented
+   	fmt.Println(d)
    }
 
 The output is below.

cpu.go

@@ -1,6 +1,7 @@
 package gopsutil
 
 import (
+	"encoding/json"
 	"runtime"
 )
 
@@ -22,3 +23,8 @@ type CPUTimesStat struct {
 func CPUCounts(logical bool) (int, error) {
 	return runtime.NumCPU(), nil
 }
+
+func (c CPUTimesStat) String() string {
+	s, _ := json.Marshal(c)
+	return string(s)
+}

disk.go

@@ -1,5 +1,9 @@
 package gopsutil
 
+import (
+	"encoding/json"
+)
+
 type DiskUsageStat struct {
 	Path        string  `json:"path"`
 	Total       uint64  `json:"total"`
@@ -24,3 +28,18 @@ type DiskIOCountersStat struct {
 	WriteTime  uint64 `json:"writeTime"`
 	Name       string `json:"name"`
 }
+
+func (d DiskUsageStat) String() string {
+	s, _ := json.Marshal(d)
+	return string(s)
+}
+
+func (d DiskPartitionStat) String() string {
+	s, _ := json.Marshal(d)
+	return string(s)
+}
+
+func (d DiskIOCountersStat) String() string {
+	s, _ := json.Marshal(d)
+	return string(s)
+}

disk_test.go

@@ -1,7 +1,7 @@
 package gopsutil
 
 import (
-	//	"fmt"
+	"fmt"
 	"runtime"
 	"testing"
 )
@@ -11,12 +11,11 @@ func TestDisk_usage(t *testing.T) {
 	if runtime.GOOS == "windows" {
 		path = "C:"
 	}
-	_, err := DiskUsage(path)
+	v, err := DiskUsage(path)
 	if err != nil {
 		t.Errorf("error %v", err)
 	}
-	//	d, _ := json.Marshal(v)
-	//  fmt.Printf("%s\n", d)
+	fmt.Println(v)
 }
 
 func TestDisk_partitions(t *testing.T) {

host.go

@@ -1,5 +1,9 @@
 package gopsutil
 
+import (
+	"encoding/json"
+)
+
 // A HostInfoStat describes the host status.
 // This is not in the psutil but it useful.
 type HostInfoStat struct {
@@ -14,3 +18,13 @@ type UserStat struct {
 	Host     string `json:"host"`
 	Started  int    `json:"started"`
 }
+
+func (h HostInfoStat) String() string {
+	s, _ := json.Marshal(h)
+	return string(s)
+}
+
+func (u UserStat) String() string {
+	s, _ := json.Marshal(u)
+	return string(s)
+}

load.go

@@ -1,7 +1,16 @@
 package gopsutil
 
+import (
+	"encoding/json"
+)
+
 type LoadAvgStat struct {
 	Load1  float64 `json:"load1"`
 	Load5  float64 `json:"load5"`
 	Load15 float64 `json:"load15"`
 }
+
+func (l LoadAvgStat) String() string {
+	s, _ := json.Marshal(l)
+	return string(s)
+}

mem.go

@@ -1,5 +1,9 @@
 package gopsutil
 
+import (
+	"encoding/json"
+)
+
 type VirtualMemoryStat struct {
 	Total       uint64  `json:"total"`
 	Available   uint64  `json:"available"`
@@ -22,3 +26,13 @@ type SwapMemoryStat struct {
 	Sin         uint64  `json:"sin"`
 	Sout        uint64  `json:"sout"`
 }
+
+func (m VirtualMemoryStat) String() string {
+	s, _ := json.Marshal(m)
+	return string(s)
+}
+
+func (m SwapMemoryStat) String() string {
+	s, _ := json.Marshal(m)
+	return string(s)
+}

mem_test.go

@@ -1,7 +1,6 @@
 package gopsutil
 
 import (
-	"encoding/json"
 	"fmt"
 	"testing"
 )
@@ -11,8 +10,7 @@ func TestVirtual_memory(t *testing.T) {
 	if err != nil {
 		t.Errorf("error %v", err)
 	}
-	d, _ := json.Marshal(v)
-	fmt.Printf("%s\n", d)
+	fmt.Println(v)
 }
 
 func TestSwap_memory(t *testing.T) {
@@ -20,6 +18,5 @@ func TestSwap_memory(t *testing.T) {
 	if err != nil {
 		t.Errorf("error %v", err)
 	}
-	d, _ := json.Marshal(v)
-	fmt.Printf("%s\n", d)
+	fmt.Println(v)
 }

net.go

@@ -1,5 +1,9 @@
 package gopsutil
 
+import (
+	"encoding/json"
+)
+
 type NetIOCountersStat struct {
 	Name        string `json:"name"`         // interface name
 	BytesSent   uint64 `json:"bytes_sent"`   // number of bytes sent
@@ -26,3 +30,18 @@ type NetConnectionStat struct {
 	Status string `json:"status"`
 	Pid    int32  `json:"pid"`
 }
+
+func (n NetConnectionStat) String() string {
+	s, _ := json.Marshal(n)
+	return string(s)
+}
+
+func (n NetIOCountersStat) String() string {
+	s, _ := json.Marshal(n)
+	return string(s)
+}
+
+func (a Addr) String() string {
+	s, _ := json.Marshal(a)
+	return string(s)
+}

process.go

@@ -1,5 +1,9 @@
 package gopsutil
 
+import (
+	"encoding/json"
+)
+
 type Process struct {
 	Pid int32 `json:"pid"`
 }
@@ -27,6 +31,31 @@ type IOCountersStat struct {
 	WriteBytes int32 `json:"write_bytes"`
 }
 
+func (p Process) String() string {
+	s, _ := json.Marshal(p)
+	return string(s)
+}
+
+func (o OpenFilesStat) String() string {
+	s, _ := json.Marshal(o)
+	return string(s)
+}
+
+func (m MemoryInfoStat) String() string {
+	s, _ := json.Marshal(m)
+	return string(s)
+}
+
+func (r RlimitStat) String() string {
+	s, _ := json.Marshal(r)
+	return string(s)
+}
+
+func (i IOCountersStat) String() string {
+	s, _ := json.Marshal(i)
+	return string(s)
+}
+
 func PidExists(pid int32) (bool, error) {
 	pids, err := Pids()
 	if err != nil {

process_test.go

@@ -1,7 +1,6 @@
 package gopsutil
 
 import (
-	"encoding/json"
 	"fmt"
 	"os"
 	"runtime"
@@ -54,8 +53,7 @@ func Test_NewProcess(t *testing.T) {
 		t.Errorf("error %v", err)
 	}
 
-	d, _ := json.Marshal(ret)
-	fmt.Println(string(d))
+	fmt.Println(ret)
 }
 
 func Test_Process_memory_maps(t *testing.T) {