chore(): add hook_id example and doc

README.md

@@ -150,6 +150,7 @@ The script:
 ```bash
 #!/bin/bash
 
+echo "Hook information: name=$hook_name, id=$hook_id"
 echo "Query parameter: foo=$foo"
 echo "Header parameter: user-agent=$user_agent"
 echo "Script parameters: $1"
@@ -159,6 +160,7 @@ The result:
 
 ```bash
 $ curl --data @test.json http://localhost:8080/echo?foo=bar
+Hook information: name=echo, id=1
 Query parameter: foo=bar
 Header parameter: user-agent=curl/7.52.1
 Script parameter: {"foo": "bar"}

pkg/model/work_request.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"os"
 	"path"
+	"strconv"
 	"strings"
 	"sync"
 	"sync/atomic"
@@ -62,6 +63,14 @@ func NewWorkRequest(name, script, payload, output string, args []string, timeout
 	return w
 }
 
+// Meta return work request meta
+func (wr *WorkRequest) Meta() []string {
+	return []string{
+		"hook_id=" + strconv.FormatUint(wr.ID, 10),
+		"hook_name=" + wr.Name,
+	}
+}
+
 // Terminate set work request as terminated
 func (wr *WorkRequest) Terminate(err error) error {
 	wr.mutex.Lock()

pkg/worker/work_runner.go

@@ -2,7 +2,6 @@ package worker
 
 import (
 	"bufio"
-	"fmt"
 	"io"
 	"os"
 	"os/exec"
@@ -36,11 +35,12 @@ func Run(work *model.WorkRequest) error {
 		return work.Terminate(err)
 	}
 
-	// Exec script with args...
+	// Exec script with parameter...
 	cmd := exec.Command(binary, work.Payload)
-	// with env variables...
-	workEnv := append(os.Environ(), fmt.Sprintf("hook_id=%d", work.ID))
-	cmd.Env = append(workEnv, work.Args...)
+	// with env variables and hook arguments...
+	cmd.Env = append(os.Environ(), work.Args...)
+	// and hook meta...
+	cmd.Env = append(cmd.Env, work.Meta()...)
 	// using a process group...
 	cmd.SysProcAttr = &syscall.SysProcAttr{Setpgid: true}
 

scripts/echo.sh

@@ -2,7 +2,9 @@
 
 # Usage: http POST :8080/echo msg==hello foo=bar
 
-echo "Echo script:"
+echo "This is a simple echo hook."
+
+echo "Hook information: name=$hook_name, id=$hook_id"
 
 echo "Command result: hostname=`hostname`"
 

scripts/examples/echo.js

@@ -4,12 +4,16 @@ const os = require('os')
 
 // Usage: http POST :8080/examples/echo.js msg==hello foo=bar
 
-console.log("Echo script:")
+console.log("This is a simple echo hook using NodeJS.")
+
+const { hook_name, hook_id , user_agent, msg} = process.env
+
+console.log(`Hook information: name=${hook_name}, id=${hook_id}`)
 
 console.log("Hostname=", os.hostname())
 
-console.log("User-Agent=", process.env["user_agent"])
+console.log(`User-Agent=${user_agent}`)
 
-console.log("msg=", process.env["msg"])
+console.log(`msg=${msg}`)
 
 console.log("body=", process.argv)