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https://github.com/osamingo/gosh

Provide Go Statistics Handler, Struct, Measure Method
https://github.com/osamingo/gosh

api go golang handler metrics monitoring statistics stats

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Provide Go Statistics Handler, Struct, Measure Method

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# Go Statistics Handler

[![GitHub Actions](https://github.com/osamingo/gosh/workflows/CI/badge.svg?branch=master)](https://github.com/osamingo/gosh/actions?query=workflow%3ACI+branch%3Amaster)
[![codecov](https://codecov.io/gh/osamingo/gosh/branch/master/graph/badge.svg)](https://codecov.io/gh/osamingo/gosh)
[![Go Report Card](https://goreportcard.com/badge/github.com/osamingo/gosh)](https://goreportcard.com/report/github.com/osamingo/gosh)
[![GoDoc](https://godoc.org/github.com/osamingo/gosh?status.svg)](https://godoc.org/github.com/osamingo/gosh)
[![GitHub license](https://img.shields.io/badge/license-MIT-blue.svg)](https://raw.githubusercontent.com/osamingo/gosh/master/LICENSE)

## About

- The `gosh` is an abbreviation for Go Statistics Handler.
- This Repository is provided following functions.
- Go runtime statistics struct.
- Go runtime statistics API handler.
- Go runtime measure method.
- You can specify the favorite JSON encoder.
- [`encoding/json`](https://pkg.go.dev/encoding/json/) package.
- [`goccy/go-json`](https://pkg.go.dev/github.com/goccy/go-json) package.
- The original package you created, and so on.

## Install

```bash
$ go get github.com/osamingo/gosh@latest
```

## Usage

### Example

```go
package main

import (
"encoding/json"
"io"
"log"
"net/http"

"github.com/osamingo/gosh"
)

func main() {

h, err := gosh.NewStatisticsHandler(func(w io.Writer) gosh.JSONEncoder {
return json.NewEncoder(w)
})
if err != nil {
log.Fatalln(err)
}

mux := http.NewServeMux()
mux.Handle("/healthz", h)

if err := http.ListenAndServe(":8080", mux); err != nil {
log.Fatalln(err)
}
}
```

### Output

```bash
$ curl "localhost:8080/healthz" | jq .
{
"timestamp": 1527317620,
"go_version": "go1.10.2",
"go_os": "darwin",
"go_arch": "amd64",
"cpu_num": 8,
"goroutine_num": 6,
"gomaxprocs": 8,
"cgo_call_num": 1,
"memory_alloc": 422272,
"memory_total_alloc": 422272,
"memory_sys": 3084288,
"memory_lookups": 6,
"memory_mallocs": 4720,
"memory_frees": 71,
"stack_inuse": 491520,
"heap_alloc": 422272,
"heap_sys": 1605632,
"heap_idle": 401408,
"heap_inuse": 1204224,
"heap_released": 0,
"heap_objects": 4649,
"gc_next": 4473924,
"gc_last": 0,
"gc_num": 0,
"gc_per_second": 0,
"gc_pause_per_second": 0,
"gc_pause": []
}
```

## License

Released under the [MIT License](https://github.com/osamingo/gosh/blob/master/LICENSE).