Example Code for a Webhook Receiver Server

The following example applications -- one in Go, the other in Java -- are generic, universal webhook receivers that accept the POST from the AtScale platform and simply echo some of the posted parameters.

Example in Go

package main  
import (  
  "fmt"  
  "log"  
  "net/http"  
  "strings"  
)  
  
func test(w http.ResponseWriter, r \*http.Request) {  
  r.ParseForm() // parse arguments, you have to call this by yourself  
  fmt.Println(r.Form) // print form information in server side  
  fmt.Println("path", r.URL.Path)  
  fmt.Println("scheme", r.URL.Scheme)  
  fmt.Println(r.Form\["url_long"\])  
  for k, v := range r.Form {  
    fmt.Println("key:", k)  
    fmt.Println("val:", strings.Join(v, ""))  
  }  
  fmt.Fprintf(w, "Hello World!") // send data to client side  
}  
  
func main() {  
  http.HandleFunc("/webhook", test) // set router  
  err := http.ListenAndServe(":3030", nil) // set listen port  
  if err != nil {  
    log.Fatal("ListenAndServe: ", err)  
  }  
}

Example in Java

import java.io.IOException;  
import java.io.OutputStream;  
import java.net.InetSocketAddress;  
  
import com.sun.net.httpserver.HttpExchange;  
import com.sun.net.httpserver.HttpHandler;  
import com.sun.net.httpserver.HttpServer;  
/\*  
\* a simple static http server  
\*/  
public class Webhook {  
  public static void main(String\[\] args) throws Exception {  
    HttpServer server = HttpServer.create(new InetSocketAddress(3030),
0);  
    server.createContext("/test", new MyHandler());  
    server.setExecutor(null); // creates a default executor  
    System.out.println("starting"); server.start();  
  }  
  
  static class MyHandler implements HttpHandler {  
    public void handle(HttpExchange exchange) throws IOException {  
      String response = "finished";  
      exchange.sendResponseHeaders(200, response.length());  
      OutputStream os = exchange.getResponseBody();  
      os.write(response.getBytes());  
      os.close();  
      System.out.println("uri is " + exchange.getRequestURI());  
    }  
  }  
}

Related reference
Design Center Webhooks

Engine Webhooks