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195 lines
8.0 KiB
HTML
195 lines
8.0 KiB
HTML
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<div class="tab-wrap">
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<input type="radio" id="subscribe_star_go" name="subscribe_star" class="tab" checked>
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<label for="subscribe_star_go" class="api-lang" data-language="go">Go</label>
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<input type="radio" id="subscribe_star_java" name="subscribe_star" class="tab">
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<label for="subscribe_star_java" class="api-lang" data-language="java">Java</label>
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<input type="radio" id="subscribe_star_js" name="subscribe_star" class="tab">
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<label for="subscribe_star_js" class="api-lang" data-language="js">JavaScript</label>
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<input type="radio" id="subscribe_star_py" name="subscribe_star" class="tab">
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<label for="subscribe_star_py" class="api-lang" data-language="py">Python</label>
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<input type="radio" id="subscribe_star_ruby" name="subscribe_star" class="tab">
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<label for="subscribe_star_ruby" class="api-lang" data-language="ruby">Ruby</label>
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<input type="radio" id="subscribe_star_ts" name="subscribe_star" class="tab">
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<label for="subscribe_star_ts" class="api-lang" data-language="ts">TypeScript</label>
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<div class="tab__content">
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<pre id="subscribe_star_go_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/go-nats-examples/blob/master/api-examples/subscribe_star/main.go#L11-33"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-go">nc, err := nats.Connect("demo.nats.io")
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if err != nil {
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log.Fatal(err)
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}
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defer nc.Close()
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// Use a WaitGroup to wait for 2 messages to arrive
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wg := sync.WaitGroup{}
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wg.Add(2)
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// Subscribe
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if _, err := nc.Subscribe("time.*.east", func(m *nats.Msg) {
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log.Printf("%s: %s", m.Subject, m.Data)
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wg.Done()
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}); err != nil {
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log.Fatal(err)
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}
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// Wait for the 2 messages to come in
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wg.Wait()
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</code></pre>
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</div>
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<div class="tab__content">
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<pre id="subscribe_star_java_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/java-nats-examples/blob/master/src/main/java/io/nats/examples/SubscribeStar.java#L14-36"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-java">Connection nc = Nats.connect("nats://demo.nats.io:4222");
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// Use a latch to wait for 2 messages to arrive
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CountDownLatch latch = new CountDownLatch(2);
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// Create a dispatcher and inline message handler
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Dispatcher d = nc.createDispatcher((msg) -> {
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String subject = msg.getSubject();
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String str = new String(msg.getData(), StandardCharsets.UTF_8);
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System.out.println(subject + ": " + str);
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latch.countDown();
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});
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// Subscribe
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d.subscribe("time.*.east");
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// Wait for messages to come in
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latch.await();
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// Close the connection
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nc.close();
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</code></pre>
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</div>
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<div class="tab__content">
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<pre id="subscribe_star_js_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/node-nats-examples/blob/master/src/subscriber_samples.js#L130-156"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-javascript">let nc = NATS.connect({
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url: "nats://demo.nats.io:4222"});
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nc.subscribe('time.us.*', (msg, reply, subject) => {
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// converting timezones correctly in node requires a library
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// this doesn't take into account *many* things.
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let time = "";
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switch (subject) {
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case 'time.us.east':
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time = new Date().toLocaleTimeString("en-us", {timeZone: "America/New_York"});
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break;
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case 'time.us.central':
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time = new Date().toLocaleTimeString("en-us", {timeZone: "America/Chicago"});
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break;
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case 'time.us.mountain':
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time = new Date().toLocaleTimeString("en-us", {timeZone: "America/Denver"});
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break;
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case 'time.us.west':
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time = new Date().toLocaleTimeString("en-us", {timeZone: "America/Los_Angeles"});
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break;
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default:
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time = "I don't know what you are talking about Willis";
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}
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t.log(subject, time);
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});
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</code></pre>
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</div>
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<div class="tab__content">
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<pre id="subscribe_star_py_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/asyncio-nats-examples/blob/master/subscribe_star.py#L6-28"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-python">nc = NATS()
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await nc.connect(servers=["nats://demo.nats.io:4222"])
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# Use queue to wait for 2 messages to arrive
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queue = asyncio.Queue()
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async def cb(msg):
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await queue.put_nowait(msg)
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await nc.subscribe("time.*.east", cb=cb)
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# Send 2 messages and wait for them to come in
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await nc.publish("time.A.east", b'A')
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await nc.publish("time.B.east", b'B')
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msg_A = await queue.get()
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msg_B = await queue.get()
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print("Msg A:", msg_A)
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print("Msg B:", msg_B)
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</code></pre>
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</div>
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<div class="tab__content">
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<pre id="subscribe_star_ruby_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/ruby-nats-examples/blob/master/subscribe_star.rb#L1-26"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-ruby">require 'nats/client'
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require 'fiber'
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NATS.start(servers:["nats://127.0.0.1:4222"]) do |nc|
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Fiber.new do
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f = Fiber.current
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nc.subscribe("time.*.east") do |msg, reply|
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f.resume Time.now
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end
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nc.publish("time.A.east", "A")
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nc.publish("time.B.east", "B")
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# Use the response
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msg_A = Fiber.yield
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puts "Msg A: #{msg_A}"
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msg_B = Fiber.yield
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puts "Msg B: #{msg_B}"
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end.resume
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end
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</code></pre>
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</div>
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<div class="tab__content">
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<pre id="subscribe_star_ts_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/ts-nats-examples/blob/master/src/subscriber_samples.ts#L119-142"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-javascript">await nc.subscribe('time.us.*', (err, msg) => {
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// converting timezones correctly in node requires a library
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// this doesn't take into account *many* things.
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let time = "";
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switch (msg.subject) {
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case 'time.us.east':
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time = new Date().toLocaleTimeString("en-us", {timeZone: "America/New_York"});
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break;
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case 'time.us.central':
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time = new Date().toLocaleTimeString("en-us", {timeZone: "America/Chicago"});
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break;
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case 'time.us.mountain':
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time = new Date().toLocaleTimeString("en-us", {timeZone: "America/Denver"});
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break;
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case 'time.us.west':
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time = new Date().toLocaleTimeString("en-us", {timeZone: "America/Los_Angeles"});
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break;
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default:
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time = "I don't know what you are talking about Willis";
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}
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console.log(msg.subject, time);
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});
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</code></pre>
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</div>
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</div>
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