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feat: switch glide to govendor. (#186)

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* feat: switch glide to govendor.

* fix: testing
This commit is contained in:
Bo-Yi Wu
2017-02-19 15:04:00 +08:00
committed by GitHub
parent 3f4485edf7
commit 23bd0d0c56
732 changed files with 252501 additions and 52 deletions
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vendor/gopkg.in/fukata/golang-stats-api-handler.v1/README.md generated vendored Normal file
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golang-stats-api-handler
========================
Golang cpu, memory, gc, etc information api handler.
## Install
go get github.com/fukata/golang-stats-api-handler
## Example
```go
import (
"net/http"
"log"
"github.com/fukata/golang-stats-api-handler"
)
func main() {
http.HandleFunc("/api/stats", stats_api.Handler)
log.Fatal( http.ListenAndServe(":8080", nil) )
}
```
## Response
$ curl -i http://localhost:8080/api/stats/
HTTP/1.1 200 OK
Content-Length: 712
Content-Type: application/json
Date: Sun, 23 Aug 2015 16:52:13 GMT
{
"time": 1440348733548339479,
"go_version": "go1.5",
"go_os": "darwin",
"go_arch": "amd64",
"cpu_num": 8,
"goroutine_num": 24,
"gomaxprocs": 8,
"cgo_call_num": 9,
"memory_alloc": 3974536,
"memory_total_alloc": 12857888,
"memory_sys": 12871928,
"memory_lookups": 52,
"memory_mallocs": 144922,
"memory_frees": 118936,
"memory_stack": 688128,
"heap_alloc": 3974536,
"heap_sys": 8028160,
"heap_idle": 2170880,
"heap_inuse": 5857280,
"heap_released": 0,
"heap_objects": 25986,
"gc_next": 4833706,
"gc_last": 1440348732827834419,
"gc_num": 4,
"gc_per_second": 0,
"gc_pause_per_second": 0,
"gc_pause": [
0.196828,
2.027442,
0.181887,
0.312866
]
}
|Key |Value|
|-------------------|----------------|
|time |unix timestamp as nano-seconds|
|go_version |runtime.Version()|
|go_os |runtime.GOOS|
|go_arch |runtime.GOARCH|
|cpu_num |number of CPUs|
|goroutine_num |number of goroutines|
|gomaxprocs |runtime.GOMAXRPOCS(0)|
|cgo_call_num |runtime.NumCgoCall()|
|memory_alloc |bytes allocated and not yet freed|
|memory_total_alloc |bytes allocated (even if freed)|
|memory_sys |bytes obtained from system|
|memory_lookups |number of pointer lookups|
|memory_mallocs |number of mallocs|
|memory_frees |number of frees|
|memory_stack |bytes used by stack allocator|
|heap_alloc |bytes allocated and not yet freed (same as memory_alloc above)|
|heap_sys |bytes obtained from system (not same as memory_sys)|
|heap_idle |bytes in idle spans|
|heap_inuse |bytes in non-idle span|
|heap_released |bytes released to the OS|
|heap_objects |total number of allocated objects|
|gc_next |next collection will happen when HeapAlloc ≥ this amount|
|gc_last |end time of last collection|
|gc_num |number of GC-run|
|gc_per_second |number of GC-run per second|
|gc_pause_per_second|pause duration by GC per seconds|
|gc_pause |pause durations by GC|
## Plugins
- Zabbix: [fukata/golang-stats-api-handler-zabbix-userparameter](https://github.com/fukata/golang-stats-api-handler-zabbix-userparameter)
- Munin: [fukata/golang-stats-api-handler-munin-plugin](https://github.com/fukata/golang-stats-api-handler-munin-plugin)

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vendor/gopkg.in/fukata/golang-stats-api-handler.v1/handler.go generated vendored Normal file
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package stats_api
import (
"encoding/json"
"io"
"net/http"
"runtime"
"strconv"
"sync"
"time"
)
// Stats represents activity status of Go.
type Stats struct {
Time int64 `json:"time"`
// runtime
GoVersion string `json:"go_version"`
GoOs string `json:"go_os"`
GoArch string `json:"go_arch"`
CpuNum int `json:"cpu_num"`
GoroutineNum int `json:"goroutine_num"`
Gomaxprocs int `json:"gomaxprocs"`
CgoCallNum int64 `json:"cgo_call_num"`
// memory
MemoryAlloc uint64 `json:"memory_alloc"`
MemoryTotalAlloc uint64 `json:"memory_total_alloc"`
MemorySys uint64 `json:"memory_sys"`
MemoryLookups uint64 `json:"memory_lookups"`
MemoryMallocs uint64 `json:"memory_mallocs"`
MemoryFrees uint64 `json:"memory_frees"`
// stack
StackInUse uint64 `json:"memory_stack"`
// heap
HeapAlloc uint64 `json:"heap_alloc"`
HeapSys uint64 `json:"heap_sys"`
HeapIdle uint64 `json:"heap_idle"`
HeapInuse uint64 `json:"heap_inuse"`
HeapReleased uint64 `json:"heap_released"`
HeapObjects uint64 `json:"heap_objects"`
// garbage collection
GcNext uint64 `json:"gc_next"`
GcLast uint64 `json:"gc_last"`
GcNum uint32 `json:"gc_num"`
GcPerSecond float64 `json:"gc_per_second"`
GcPausePerSecond float64 `json:"gc_pause_per_second"`
GcPause []float64 `json:"gc_pause"`
}
var lastSampleTime time.Time
var lastPauseNs uint64 = 0
var lastNumGc uint32 = 0
var nsInMs float64 = float64(time.Millisecond)
var statsMux sync.Mutex
func GetStats() *Stats {
statsMux.Lock()
defer statsMux.Unlock()
var mem runtime.MemStats
runtime.ReadMemStats(&mem)
now := time.Now()
var gcPausePerSecond float64
if lastPauseNs > 0 {
pauseSinceLastSample := mem.PauseTotalNs - lastPauseNs
gcPausePerSecond = float64(pauseSinceLastSample) / nsInMs
}
lastPauseNs = mem.PauseTotalNs
countGc := int(mem.NumGC - lastNumGc)
var gcPerSecond float64
if lastNumGc > 0 {
diff := float64(countGc)
diffTime := now.Sub(lastSampleTime).Seconds()
gcPerSecond = diff / diffTime
}
if countGc > 256 {
// lagging GC pause times
countGc = 256
}
gcPause := make([]float64, countGc)
for i := 0; i < countGc; i++ {
idx := int((mem.NumGC-uint32(i))+255) % 256
pause := float64(mem.PauseNs[idx])
gcPause[i] = pause / nsInMs
}
lastNumGc = mem.NumGC
lastSampleTime = time.Now()
return &Stats{
Time: now.UnixNano(),
GoVersion: runtime.Version(),
GoOs: runtime.GOOS,
GoArch: runtime.GOARCH,
CpuNum: runtime.NumCPU(),
GoroutineNum: runtime.NumGoroutine(),
Gomaxprocs: runtime.GOMAXPROCS(0),
CgoCallNum: runtime.NumCgoCall(),
// memory
MemoryAlloc: mem.Alloc,
MemoryTotalAlloc: mem.TotalAlloc,
MemorySys: mem.Sys,
MemoryLookups: mem.Lookups,
MemoryMallocs: mem.Mallocs,
MemoryFrees: mem.Frees,
// stack
StackInUse: mem.StackInuse,
// heap
HeapAlloc: mem.HeapAlloc,
HeapSys: mem.HeapSys,
HeapIdle: mem.HeapIdle,
HeapInuse: mem.HeapInuse,
HeapReleased: mem.HeapReleased,
HeapObjects: mem.HeapObjects,
// garbage collection
GcNext: mem.NextGC,
GcLast: mem.LastGC,
GcNum: mem.NumGC,
GcPerSecond: gcPerSecond,
GcPausePerSecond: gcPausePerSecond,
GcPause: gcPause,
}
}
var newLineTerm bool = false
var prettyPrint bool = false
// NewLineTermEnabled enable termination with newline for response body.
func NewLineTermEnabled() {
newLineTerm = true
}
// NewLineTermDisabled disable termination with newline for response body.
func NewLineTermDisabled() {
newLineTerm = false
}
// PrettyPrintEnabled enable pretty-print for response body.
func PrettyPrintEnabled() {
prettyPrint = true
}
// PrettyPrintDisabled disable pritty-print for response body.
func PrettyPrintDisabled() {
prettyPrint = false
}
// Handler returns activity status of Go.
func Handler(w http.ResponseWriter, r *http.Request) {
values := r.URL.Query()
for _, c := range []string{"1", "true"} {
if values.Get("pp") == c {
prettyPrint = true
}
}
var jsonBytes []byte
var jsonErr error
if prettyPrint {
jsonBytes, jsonErr = json.MarshalIndent(GetStats(), "", " ")
} else {
jsonBytes, jsonErr = json.Marshal(GetStats())
}
var body string
if jsonErr != nil {
body = jsonErr.Error()
} else {
body = string(jsonBytes)
}
if newLineTerm {
body += "\n"
}
headers := make(map[string]string)
headers["Content-Type"] = "application/json"
headers["Content-Length"] = strconv.Itoa(len(body))
for name, value := range headers {
w.Header().Set(name, value)
}
if jsonErr != nil {
w.WriteHeader(http.StatusInternalServerError)
} else {
w.WriteHeader(http.StatusOK)
}
io.WriteString(w, body)
}