ecodeclub

# Admin Service

Start the admin service:

web.BConfig.Listen.EnableAdmin = true
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And you can specify the admin service host and port：

web.BConfig.Listen.AdminAddr = "localhost"
web.BConfig.Listen.AdminPort = 8088
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Open web browser and types URL: http://localhost:8088/ you can see Welcome to Admin Dashboard.

# 请求统计信息

Access http://localhost:8088/qps:

How can I use the statistics? Add statistics like this:

admin.StatisticsMap.AddStatistics("POST", "/api/user", "&admin.user", time.Duration(2000))
admin.StatisticsMap.AddStatistics("POST", "/api/user", "&admin.user", time.Duration(120000))
admin.StatisticsMap.AddStatistics("GET", "/api/user", "&admin.user", time.Duration(13000))
admin.StatisticsMap.AddStatistics("POST", "/api/admin", "&admin.user", time.Duration(14000))
admin.StatisticsMap.AddStatistics("POST", "/api/user/astaxie", "&admin.user", time.Duration(12000))
admin.StatisticsMap.AddStatistics("POST", "/api/user/xiemengjun", "&admin.user", time.Duration(13000))
admin.StatisticsMap.AddStatistics("DELETE", "/api/user", "&admin.user", time.Duration(1400))

Get statistics information:

admin.StatisticsMap.GetMap(os.Stdout)

Here is the output:

| requestUrl                                        | method     | times            | used             | max used         | min used         | avg used         |
| /api/user                                         | POST       |  2               | 122.00us         | 120.00us         | 2.00us           | 61.00us          |
| /api/user                                         | GET        |  1               | 13.00us          | 13.00us          | 13.00us          | 13.00us          |
| /api/user                                         | DELETE     |  1               | 1.40us           | 1.40us           | 1.40us           | 1.40us           |
| /api/admin                                        | POST       |  1               | 14.00us          | 14.00us          | 14.00us          | 14.00us          |
| /api/user/astaxie                                 | POST       |  1               | 12.00us          | 12.00us          | 12.00us          | 12.00us          |
| /api/user/xiemengjun                              | POST       |  1               | 13.00us          | 13.00us          | 13.00us          | 13.00us          |

# Profiling

Monitoring the performance of running processes is a very good way to optimize performance and to look for issues in our application. E.g.: information of GC and goroutine.

Profile provides a easy entry point for you to debug the application. It uses the ProcessInput entry function to process the requests. Here are some debugging types:

  • lookup goroutine

    Print out the tasks of all goroutines which are currently running. You can easily see what all goroutines are doing.

    goroutine 3 [running]: runtime/pprof.writeGoroutineStacks(0x634238, 0xc210000008, 0x62b000, 0xd200000000000000) /Users/astaxie/go/src/pkg/runtime/pprof/pprof.go:511 +0x7c runtime/pprof.writeGoroutine(0x634238, 0xc210000008, 0x2, 0xd2676410957b30fd, 0xae98) /Users/astaxie/go/src/pkg/runtime/pprof/pprof.go:500 +0x3c runtime/pprof.(*Profile).WriteTo(0x52ebe0, 0x634238, 0xc210000008, 0x2, 0x1, ...) /Users/astaxie/go/src/pkg/runtime/pprof/pprof.go:229 +0xb4 _/Users/astaxie/github/beego/toolbox.ProcessInput(0x2c89f0, 0x10, 0x634238, 0xc210000008) /Users/astaxie/github/beego/toolbox/profile.go:26 +0x256 _/Users/astaxie/github/beego/toolbox.TestProcessInput(0xc21004e090) /Users/astaxie/github/beego/toolbox/profile_test.go:9 +0x5a testing.tRunner(0xc21004e090, 0x532320) /Users/astaxie/go/src/pkg/testing/testing.go:391 +0x8b created by testing.RunTests /Users/astaxie/go/src/pkg/testing/testing.go:471 +0x8b2

    goroutine 1 [chan receive]: testing.RunTests(0x315668, 0x532320, 0x4, 0x4, 0x1) /Users/astaxie/go/src/pkg/testing/testing.go:472 +0x8d5 testing.Main(0x315668, 0x532320, 0x4, 0x4, 0x537700, ...) /Users/astaxie/go/src/pkg/testing/testing.go:403 +0x84 main.main() _/Users/astaxie/github/beego/toolbox/_test/_testmain.go:53 +0x9c

  • lookup heap

    Print out information of current heap:

    heap profile: 1: 288 [2: 296] @ heap/1048576 1: 288 [2: 296] @

    # runtime.MemStats

    # Alloc = 275504

    # TotalAlloc = 275512

    # Sys = 4069608

    # Lookups = 5

    # Mallocs = 469

    # Frees = 1

    # HeapAlloc = 275504

    # HeapSys = 1048576

    # HeapIdle = 647168

    # HeapInuse = 401408

    # HeapReleased = 0

    # HeapObjects = 468

    # Stack = 24576 / 131072

    # MSpan = 4472 / 16384

    # MCache = 1504 / 16384

    # BuckHashSys = 1476472

    # NextGC = 342976

    # PauseNs = [370712 77378 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0]

    # NumGC = 2

    # EnableGC = true

    # DebugGC = false

  • lookup threadcreate

    Print out information of threads:

    threadcreate profile: total 4 1 @ 0x17f68 0x183c7 0x186a8 0x188cc 0x19ca9 0xcf41 0x139a3 0x196c0

    # 0x183c7 newm+0x27 /Users/astaxie/go/src/pkg/runtime/proc.c:896

    # 0x186a8 startm+0xb8 /Users/astaxie/go/src/pkg/runtime/proc.c:974

    # 0x188cc handoffp+0x1ac /Users/astaxie/go/src/pkg/runtime/proc.c:992

    # 0x19ca9 runtime.entersyscallblock+0x129 /Users/astaxie/go/src/pkg/runtime/proc.c:1514

    # 0xcf41 runtime.notetsleepg+0x71 /Users/astaxie/go/src/pkg/runtime/lock_sema.c:253

    # 0x139a3 runtime.MHeap_Scavenger+0xa3 /Users/astaxie/go/src/pkg/runtime/mheap.c:463

    1 @ 0x17f68 0x183c7 0x186a8 0x188cc 0x189c3 0x1969b 0x2618b

    # 0x183c7 newm+0x27 /Users/astaxie/go/src/pkg/runtime/proc.c:896

    # 0x186a8 startm+0xb8 /Users/astaxie/go/src/pkg/runtime/proc.c:974

    # 0x188cc handoffp+0x1ac /Users/astaxie/go/src/pkg/runtime/proc.c:992

    # 0x189c3 stoplockedm+0x83 /Users/astaxie/go/src/pkg/runtime/proc.c:1049

    # 0x1969b runtime.gosched0+0x8b /Users/astaxie/go/src/pkg/runtime/proc.c:1382

    # 0x2618b runtime.mcall+0x4b /Users/astaxie/go/src/pkg/runtime/asm_amd64.s:178

    1 @ 0x17f68 0x183c7 0x170bc 0x196c0

    # 0x183c7 newm+0x27 /Users/astaxie/go/src/pkg/runtime/proc.c:896

    # 0x170bc runtime.main+0x3c /Users/astaxie/go/src/pkg/runtime/proc.c:191

    1 @

  • lookup block

    Print out information of block:

    --- contention: cycles/second=2294781025

  • start cpuprof

    Start recording cpuprof info into created file cpu-pid.pprof.

  • stop cpuprof

    Stop recording.

  • get memprof

    Start recording memprof into created file mem-pid.memprof

  • gc summary

    Check GC status:

    NumGC:2 Pause:54.54us Pause(Avg):170.82us Overhead:177.49% Alloc:248.97K Sys:3.88M Alloc(Rate):1.23G/s Histogram:287.09us 287.09us 287.09us

# Health Check

It can check the health status of your application. E.g.: To check if database is available:

type DatabaseCheck struct {
}

func (dc *DatabaseCheck) Check() error {
	if dc.isConnected() {
		return nil
	} else {
		return errors.New("can't connect database")
	}
}
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Then you can add it as a check item:

admin.AddHealthCheck("database",&DatabaseCheck{})
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After this you can send get request to /healthcheck:

$ curl http://beego.vip:8088/healthcheck
* deadlocks: OK
* database: OK

It will return the database status accordingly.

# 定时任务

The user needs to have added Timed Tasks to the application in order to perform the corresponding task checks and manually triggered tasks.

  • http://localhost:8088/task
  • or: http://localhost:8088/task?taskname=task name

# Configuration information

  • All configuration http://localhost:8088/listconf?command=conf
  • Routers: http://localhost:8088/listconf?command=router
  • Filters: http://localhost:8088/listconf?command=filter

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