go_apm

This provides the instrumentation modules for the Go web frameworks. Currently this supports Goji web framework (https://github.com/zenazn/goji).

Pre-requisite

Install the Elastic APM Go Agent with the following command.

go get go.elastic.co/apm/v2

Instrumentation modules

module/apmgoji

Package apmgoji provides middleware for the Goji web framework. This middleware traces all the incoming requests and reports each transaction to the APM server.

The apmgoji middleware will also recover panics and send them to Elastic APM.

import (
	"github.com/Sonika-dot-Prakash/go_apm/module/apmgoji"
)

func main() {
	goji.Use(goji.DefaultMux.Router)
	goji.Use(apmgoji.Middleware())
	...
}

module/apmgoredisv8

Package apmgoredisv8 provides a means of instrumenting go-redis/redis for v8 so that Redis commands are reported as spans within the current transaction.

import (
	"go.elastic.co/apm/v2"
	
	"github.com/go-redis/redis/v8"
	"github.com/Sonika-dot-Prakash/go_apm/module/apmgoredisv8"
)

var redisClient = redis.NewClient(&redis.Options{
	Addr:     "localhost:6379",
	Password: "",
	DB:       0,
})

func main() {
	// Add apm hook to redisClient.
	redisClient.AddHook(apmgoredis.NewHook())
	...
}

func handleRequest(w http.ResponseWriter, req *http.Request) {
	// Pass the current transaction context in Redis call
	// Redis commands will be reported as spans within the current transaction.
	val, err := redisClient.Get(req.Context(), "key1").Result()
	if err != nil {
		fmt.Println(err)
		e := apm.CaptureError(req.Context(), err)
		e.Send()
	}
	...
}