Update the multiple receive with url fetches

examples/multiple-receive/multiple_receive.bal

@@ -1,27 +1,29 @@
+import ballerina/http;
 import ballerina/io;
 import ballerina/lang.runtime;
 
 type Result record {
- int a;
- int b;
+ json|error a;
+ json|error b;
 };
 
 public function main() {
  worker w1 {
- 2 -> w3;
+ fetch("https://postman-echo.com/get?worker=w1") -> function;
  }
 
  worker w2 {
  runtime:sleep(2);
- 3 -> w3;
+ fetch("https://postman-echo.com/get?worker=w2") -> function;
  }
 
- worker w3 returns json {
- // The worker waits until both values are received.
- Result result = <- {a: w1, b: w2};
- return result.toJson();
- }
-
- json result = wait w3;
+ // The worker waits until both values are received.
+ Result result = <- {a: w1, b: w2};
  io:println(result);
 }
+
+function fetch(string url) returns json|error {
+ http:Client cl = check new (url);
+ record {map<json> args;} payload = check cl->get("");
+ return payload.args.'worker;
+}

examples/multiple-receive/multiple_receive.out

@@ -1,2 +1,2 @@
 $ bal run multiple_receive.bal
-{"a":2,"b":3}
+{"a":"w1","b":"w2"}