smeeでwebhookの中身をデバッグする

あるサービスの webhook の中身をみたいことがあったのでメモ

compose.yml

services:
  server:
    image: golang:1.26
    working_dir: /app
    volumes:
      - .:/app
    command: go run main.go
    ports:
      - "3000:3000"

  client:
    image: node:24
    command: sh -c "npm install -g smee-client && smee --url ${SMEE_URL} --target http://server:3000/webhook"
    environment:
      - SMEE_URL=${SMEE_URL}
    depends_on:
      - server

main.go

package main

import (
	"fmt"
	"io"
	"log"
	"net/http"
)

func main() {
	http.HandleFunc("/webhook", func(w http.ResponseWriter, r *http.Request) {
		body, _ := io.ReadAll(r.Body)

		//fmt.Println("===== Headers =====")
		//for k, v := range r.Header {
		//	fmt.Printf("%s: %v\n", k, v)
		//}

		//fmt.Println("===== Body =====")
		fmt.Println(string(body))

		w.WriteHeader(http.StatusOK)
	})

	log.Println("listening on :3000")
	log.Fatal(http.ListenAndServe(":3000", nil))
}

使い方

SMEE_URL=https://smee.io/xxxx docker compose up 2>&1 | tee webhook.log