test: add a soda worker for majordomo

Author: aminya

examples/majordomo/README.md

@@ -20,11 +20,12 @@ The example will start a broker and some workers, then do some requests. The
 output will be similar to this:
 
 ```
-
 starting broker on tcp://127.0.0.1:5555
-starting worker on tcp://127.0.0.1:5555
-starting worker on tcp://127.0.0.1:5555
-starting worker on tcp://127.0.0.1:5555
+starting broker on tcp://127.0.0.1:5555
+starting worker soda on tcp://127.0.0.1:5555
+starting worker tea on tcp://127.0.0.1:5555
+starting worker coffee on tcp://127.0.0.1:5555
+starting worker tea on tcp://127.0.0.1:5555
 ---------- Started -----------
 requesting 'cola' from 'soda'
 requesting 'oolong' from 'tea'
@@ -41,27 +42,30 @@ registered worker 00800041a9 for 'tea'
 dispatching 'tea' 00800041ab req -> 00800041a7
 dispatching 'tea' 00800041ac req -> 00800041a9
 dispatching 'coffee' 00800041af req -> 00800041a8
-dispatching 'tea' 00800041ac <- rep 00800041a9
-dispatching 'tea' 00800041ad req -> 00800041a9
-received 'sencha' from 'tea'
-dispatching 'tea' 00800041ad <- rep 00800041a9
-dispatching 'tea' 00800041ae req -> 00800041a9
-received 'earl grey, with milk' from 'tea'
 dispatching 'coffee' 00800041af <- rep 00800041a8
 dispatching 'coffee' 00800041b0 req -> 00800041a8
 received 'cappuccino' from 'coffee'
+dispatching 'tea' 00800041ab <- rep 00800041a7
+dispatching 'tea' 00800041ad req -> 00800041a7
+received 'oolong' from 'tea'
 dispatching 'coffee' 00800041b0 <- rep 00800041a8
 dispatching 'coffee' 00800041b1 req -> 00800041a8
 received 'latte, with soy milk' from 'coffee'
 dispatching 'coffee' 00800041b1 <- rep 00800041a8
 dispatching 'coffee' 00800041b2 req -> 00800041a8
 received 'espresso' from 'coffee'
+registered worker 00800041b3 for 'soda'
+dispatching 'soda' 00800041aa req -> 00800041b3
+dispatching 'soda' 00800041aa <- rep 00800041b3
+received 'cola' from 'soda'
+dispatching 'tea' 00800041ac <- rep 00800041a9
+dispatching 'tea' 00800041ae req -> 00800041a9
+received 'sencha' from 'tea'
 dispatching 'tea' 00800041ae <- rep 00800041a9
 received 'jasmine' from 'tea'
 dispatching 'coffee' 00800041b2 <- rep 00800041a8
 received 'irish coffee' from 'coffee'
-dispatching 'tea' 00800041ab <- rep 00800041a7
-received 'oolong' from 'tea'
-timeout expired waiting for 'soda'
+dispatching 'tea' 00800041ad <- rep 00800041a7
+received 'earl grey, with milk' from 'tea'
 ---------- Stopping -----------
 ```

examples/majordomo/index.ts

@@ -9,6 +9,15 @@ async function sleep(msec: number) {
   })
 }
 
+class SodaWorker extends Worker {
+  service = "soda"
+
+  override async process(...msgs: Buffer[]): Promise<Buffer[]> {
+    await sleep(Math.random() * 1000)
+    return msgs
+  }
+}
+
 class TeaWorker extends Worker {
   service = "tea"
 
@@ -29,7 +38,12 @@ class CoffeeWorker extends Worker {
 
 const broker = new Broker()
 
-const workers = [new TeaWorker(), new CoffeeWorker(), new TeaWorker()]
+const workers = [
+  new SodaWorker(),
+  new TeaWorker(),
+  new CoffeeWorker(),
+  new TeaWorker(),
+]
 
 async function request(
   service: string,
@@ -46,12 +60,12 @@ async function request(
     console.log(`received '${res.join(", ")}' from '${service}'`)
     return res
   } catch (err) {
-    console.log(`timeout expired waiting for '${service}'`)
+    console.log(`timeout expired waiting for '${service}'`, err)
   }
 }
 
 async function main() {
-  const started = Promise.all([
+  const _started = Promise.all([
     // start the broker
     broker.start(),
     // start the workers
@@ -81,8 +95,6 @@ async function main() {
     // stop the workers
     ...workers.map(worker => worker.stop()),
   ])
-  // await outstanding promises
-  await started
 }
 
 main().catch(err => {

examples/majordomo/worker.ts

@@ -13,7 +13,7 @@ export class Worker {
   }
 
   async start() {
-    console.log(`starting worker on ${this.address}`)
+    console.log(`starting worker ${this.service} on ${this.address}`)
     await this.socket.send([null, Header.Worker, Message.Ready, this.service])
 
     for await (const [_blank1, _header, _type, client, _blank2, ...req] of this

examples/queue/index.ts

@@ -4,8 +4,8 @@ import {Queue} from "./queue"
 
 async function main() {
   const sender = new Dealer()
-  await sender.bind("tcp://127.0.0.1:5555")
-  console.log("sender bound to port 5555")
+  await sender.bind("tcp://127.0.0.1:4444")
+  console.log("sender bound to port 4444")
 
   const queue = new Queue(sender)
 
@@ -16,8 +16,8 @@ async function main() {
   ])
 
   const receiver = new Dealer()
-  receiver.connect("tcp://127.0.0.1:5555")
-  console.log("receiver connected to port 5555")
+  receiver.connect("tcp://127.0.0.1:4444")
+  console.log("receiver connected to port 4444")
 
   for await (const [msg] of receiver) {
     if (msg.length === 0) {