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nats.docs/_examples/unsubscribe.html
Stephen Asbury 57db99feba Cleaned up how examples are handled to reduce thrashing in git
Examples are no longer in the final html as solo files, only in their container file
2019-05-15 10:41:36 -07:00

169 lines
6.5 KiB
HTML

<div class="tab-wrap">
<input type="radio" id="unsubscribe_go" name="unsubscribe" class="tab" checked>
<label for="unsubscribe_go" class="api-lang" data-language="go">Go</label>
<input type="radio" id="unsubscribe_java" name="unsubscribe" class="tab">
<label for="unsubscribe_java" class="api-lang" data-language="java">Java</label>
<input type="radio" id="unsubscribe_js" name="unsubscribe" class="tab">
<label for="unsubscribe_js" class="api-lang" data-language="js">JavaScript</label>
<input type="radio" id="unsubscribe_py" name="unsubscribe" class="tab">
<label for="unsubscribe_py" class="api-lang" data-language="py">Python</label>
<input type="radio" id="unsubscribe_ruby" name="unsubscribe" class="tab">
<label for="unsubscribe_ruby" class="api-lang" data-language="ruby">Ruby</label>
<input type="radio" id="unsubscribe_ts" name="unsubscribe" class="tab">
<label for="unsubscribe_ts" class="api-lang" data-language="ts">TypeScript</label>
<div class="tab__content">
<pre id="unsubscribe_go_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/go-nats-examples/blob/master/api-examples/unsubscribe/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(&#34;demo.nats.io&#34;)
if err != nil {
log.Fatal(err)
}
defer nc.Close()
// Sync Subscription
sub, err := nc.SubscribeSync(&#34;updates&#34;)
if err != nil {
log.Fatal(err)
}
if err := sub.Unsubscribe(); err != nil {
log.Fatal(err)
}
// Async Subscription
sub, err = nc.Subscribe(&#34;updates&#34;, func(_ *nats.Msg) {})
if err != nil {
log.Fatal(err)
}
if err := sub.Unsubscribe(); err != nil {
log.Fatal(err)
}
// Close the connection
nc.Close()
</code></pre>
</div>
<div class="tab__content">
<pre id="unsubscribe_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/Unsubscribe.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(&#34;nats://demo.nats.io:4222&#34;);
Dispatcher d = nc.createDispatcher((msg) -&gt; {
String str = new String(msg.getData(), StandardCharsets.UTF_8);
System.out.println(str);
});
// Sync Subscription
Subscription sub = nc.subscribe(&#34;updates&#34;);
sub.unsubscribe();
// Async Subscription
d.subscribe(&#34;updates&#34;);
d.unsubscribe(&#34;updates&#34;);
// Close the connection
nc.close();
</code></pre>
</div>
<div class="tab__content">
<pre id="unsubscribe_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#L54-65"><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">// set up a subscription to process a request
let sub = nc.subscribe(NATS.createInbox(), (msg, reply) =&gt; {
if (msg.reply) {
nc.publish(reply, new Date().toLocaleTimeString());
}
});
// without arguments the subscription will cancel when the server receives it
// you can also specify how many messages are expected by the subscription
nc.unsubscribe(sub);
</code></pre>
</div>
<div class="tab__content">
<pre id="unsubscribe_py_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/asyncio-nats-examples/blob/master/unsubscribe.py#L6-26"><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-python">nc = NATS()
await nc.connect(servers=[&#34;nats://demo.nats.io:4222&#34;])
future = asyncio.Future()
async def cb(msg):
nonlocal future
future.set_result(msg)
sid = await nc.subscribe(&#34;updates&#34;, cb=cb)
await nc.publish(&#34;updates&#34;, b&#39;All is Well&#39;)
# Remove interest in subject
await nc.unsubscribe(sid)
# Won&#39;t be received...
await nc.publish(&#34;updates&#34;, b&#39;...&#39;)
</code></pre>
</div>
<div class="tab__content">
<pre id="unsubscribe_ruby_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/ruby-nats-examples/blob/master/unsubscribe.rb#L1-27"><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 &#39;nats/client&#39;
require &#39;fiber&#39;
NATS.start(servers:[&#34;nats://127.0.0.1:4222&#34;]) do |nc|
Fiber.new do
f = Fiber.current
sid = nc.subscribe(&#34;time&#34;) do |msg, reply|
f.resume Time.now
end
nc.publish(&#34;time&#34;, &#39;What is the time?&#39;, NATS.create_inbox)
# Use the response
msg = Fiber.yield
puts &#34;Reply: #{msg}&#34;
nc.unsubscribe(sid)
# Won&#39;t be received
nc.publish(&#34;time&#34;, &#39;What is the time?&#39;, NATS.create_inbox)
end.resume
end
</code></pre>
</div>
<div class="tab__content">
<pre id="unsubscribe_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#L51-64"><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">// set up a subscription to process a request
let sub = await nc.subscribe(createInbox(), (err, msg) =&gt; {
if (msg.reply) {
nc.publish(msg.reply, new Date().toLocaleTimeString());
} else {
t.log(&#39;got a request for the time, but no reply subject was set.&#39;);
}
});
// without arguments the subscription will cancel when the server receives it
// you can also specify how many messages are expected by the subscription
sub.unsubscribe();
</code></pre>
</div>
</div>