AWS Lambda Golang Error Capture

error-capture.go

package main

import (
  "fmt"
  "github.com/aws/aws-lambda-go/lambda"
  "runtime/debug"
  "time"
)

func main() {
  lambda.Start(handler)
}

func handler() (rerr error) {
  defer func ()  {
    if err := recover(); err != nil {
      rerr = fmt.Errorf(`{"message": "%s", "level": "error", "timestamp": "%s", "stackTrace": "%s"}`, err, time.Now().Format(time.RFC3339), debug.Stack())
    }
  }()
  errChannel := make(chan error)
  go forceError(errChannel)
  err :=<- errChannel
  return err
}

func forceError(errChannel chan<- error){
  defer func ()  {
    if err := recover(); err != nil {
        errChannel <- fmt.Errorf(`{"message": "%s", "level": "error", "timestamp": "%s", "stackTrace": "%s"}`, err, time.Now().Format(time.RFC3339), debug.Stack())
    }
  }()
  x := []int{1,2}
  for i := 0;i < 3;i++{
    fmt.Printf(`{"message": "number: %d", "level": "info", "timestamp": "%s"}\n`, x[i], time.Now().Format(time.RFC3339))
  }
}