I got the basics of Elastic and Kibana (version 8.4) APM for a simple go app, but I can't seem to populate the errors page when I go to Kibana>Observability>APM>Services>MyGoApp>Errors. It always looks empty like this:
The Overview page properly shows things though like this:
This is my golang code, any idea what I'm doing wrong?
package main
import (
"errors"
"fmt"
"net/http"
"github.com/gorilla/mux"
"github.com/joho/godotenv"
"go.elastic.co/apm"
"go.elastic.co/apm/module/apmhttp/v2"
)
func main() {
godotenv.Load()
router := mux.NewRouter()
router.HandleFunc("/", homePage)
router.HandleFunc("/error", errorPage)
http.ListenAndServe(":8080", apmhttp.Wrap(router))
}
func homePage(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "Welcome to the HomePage!")
fmt.Println("Endpoint Hit: homePage")
}
func errorPage(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "Sending Error!")
apm.CaptureError(r.Context(), errors.New("test error")).Send()
}
As experiment, I tried using CaptureError() method in nodejs. And it actually populated the errors. This was my code:
var apm = require('elastic-apm-node').start({
// Allowed characters: a-z, A-Z, 0-9, -, _, and space
serviceName: 'app2',
// Use if APM Server requires a secret token
secretToken: 'testtoken',
serverUrl: 'http url',
verifyServerCert: false,
environment: 'production'
})
const express = require('express')
const app = express()
const port = 3030
app.get('/', (req, res) => {
res.send('Hello World!')
})
app.get('/error', (req, res) => {
res.send('Send Err!')
const err = new Error('Trigger Error!')
apm.setTransactionName('/error')
apm.captureError(err)
})
app.listen(port, () => {
console.log(`Example app listening on port ${port}`)
})
So it seems that CaptureError() works for nodejs package, but not for golang package.