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https://github.com/taigrr/nats.docs
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168 lines
6.6 KiB
HTML
168 lines
6.6 KiB
HTML
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<div class="tab-wrap">
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<input type="radio" id="unsubscribe_auto_go" name="unsubscribe_auto" class="tab" checked>
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<label for="unsubscribe_auto_go" class="api-lang" data-language="go">Go</label>
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<input type="radio" id="unsubscribe_auto_java" name="unsubscribe_auto" class="tab">
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<label for="unsubscribe_auto_java" class="api-lang" data-language="java">Java</label>
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<input type="radio" id="unsubscribe_auto_js" name="unsubscribe_auto" class="tab">
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<label for="unsubscribe_auto_js" class="api-lang" data-language="js">JavaScript</label>
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<input type="radio" id="unsubscribe_auto_py" name="unsubscribe_auto" class="tab">
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<label for="unsubscribe_auto_py" class="api-lang" data-language="py">Python</label>
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<input type="radio" id="unsubscribe_auto_ruby" name="unsubscribe_auto" class="tab">
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<label for="unsubscribe_auto_ruby" class="api-lang" data-language="ruby">Ruby</label>
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<input type="radio" id="unsubscribe_auto_ts" name="unsubscribe_auto" class="tab">
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<label for="unsubscribe_auto_ts" class="api-lang" data-language="ts">TypeScript</label>
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<div class="tab__content">
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<pre id="unsubscribe_auto_go_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/go-nats-examples/blob/master/api-examples/unsubscribe_auto/main.go#L10-37"><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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// Sync Subscription
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sub, err := nc.SubscribeSync("updates")
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if err != nil {
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log.Fatal(err)
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}
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if err := sub.AutoUnsubscribe(1); err != nil {
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log.Fatal(err)
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}
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// Async Subscription
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sub, err = nc.Subscribe("updates", func(_ *nats.Msg) {})
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if err != nil {
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log.Fatal(err)
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}
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if err := sub.AutoUnsubscribe(1); err != nil {
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log.Fatal(err)
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}
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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="unsubscribe_auto_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/AutoUnsubscribe.java#L14-31"><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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Dispatcher d = nc.createDispatcher((msg) -> {
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String str = new String(msg.getData(), StandardCharsets.UTF_8);
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System.out.println(str);
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});
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// Sync Subscription
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Subscription sub = nc.subscribe("updates");
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sub.unsubscribe(1);
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// Async Subscription
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d.subscribe("updates");
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d.unsubscribe("updates", 1);
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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="unsubscribe_auto_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#L105-120"><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">// `max` specifies the number of messages that the server will forward.
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// The server will auto-cancel.
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let opts = {max: 10};
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let sub = nc.subscribe(NATS.createInbox(), opts, (msg) => {
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t.log(msg);
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});
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// another way after 10 messages
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let sub2 = nc.subscribe(NATS.createInbox(), (err, msg) => {
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t.log(msg.data);
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});
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// if the subscription already received 10 messages, the handler
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// won't get any more messages
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nc.unsubscribe(sub2, 10);
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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="unsubscribe_auto_py_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/asyncio-nats-examples/blob/master/unsubscribe_auto.py#L6-21"><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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async def cb(msg):
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print(msg)
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sid = await nc.subscribe("updates", cb=cb)
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await nc.auto_unsubscribe(sid, 1)
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await nc.publish("updates", b'All is Well')
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# Won't be received...
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await nc.publish("updates", 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="unsubscribe_auto_ruby_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/ruby-nats-examples/blob/master/unsubscribe_auto.rb#L1-25"><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", max: 1) do |msg, reply|
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f.resume Time.now
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end
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nc.publish("time", 'What is the time?', NATS.create_inbox)
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# Use the response
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msg = Fiber.yield
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puts "Reply: #{msg}"
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# Won't be received
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nc.publish("time", 'What is the time?', NATS.create_inbox)
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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="unsubscribe_auto_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#L94-109"><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">// `max` specifies the number of messages that the server will forward.
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// The server will auto-cancel.
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let opts = {max: 10};
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let sub = await nc.subscribe(createInbox(), (err, msg) => {
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t.log(msg.data);
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}, opts);
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// another way after 10 messages
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let sub2 = await nc.subscribe(createInbox(), (err, msg) => {
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t.log(msg.data);
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});
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// if the subscription already received 10 messages, the handler
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// won't get any more messages
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sub2.unsubscribe(10);
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</code></pre>
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</div>
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</div>
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