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nats.docs/_examples/unsubscribe_auto.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

168 lines
6.6 KiB
HTML

<div class="tab-wrap">
<input type="radio" id="unsubscribe_auto_go" name="unsubscribe_auto" class="tab" checked>
<label for="unsubscribe_auto_go" class="api-lang" data-language="go">Go</label>
<input type="radio" id="unsubscribe_auto_java" name="unsubscribe_auto" class="tab">
<label for="unsubscribe_auto_java" class="api-lang" data-language="java">Java</label>
<input type="radio" id="unsubscribe_auto_js" name="unsubscribe_auto" class="tab">
<label for="unsubscribe_auto_js" class="api-lang" data-language="js">JavaScript</label>
<input type="radio" id="unsubscribe_auto_py" name="unsubscribe_auto" class="tab">
<label for="unsubscribe_auto_py" class="api-lang" data-language="py">Python</label>
<input type="radio" id="unsubscribe_auto_ruby" name="unsubscribe_auto" class="tab">
<label for="unsubscribe_auto_ruby" class="api-lang" data-language="ruby">Ruby</label>
<input type="radio" id="unsubscribe_auto_ts" name="unsubscribe_auto" class="tab">
<label for="unsubscribe_auto_ts" class="api-lang" data-language="ts">TypeScript</label>
<div class="tab__content">
<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(&#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.AutoUnsubscribe(1); 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.AutoUnsubscribe(1); err != nil {
log.Fatal(err)
}
// Close the connection
nc.Close()
</code></pre>
</div>
<div class="tab__content">
<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(&#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(1);
// Async Subscription
d.subscribe(&#34;updates&#34;);
d.unsubscribe(&#34;updates&#34;, 1);
// Close the connection
nc.close();
</code></pre>
</div>
<div class="tab__content">
<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.
// The server will auto-cancel.
let opts = {max: 10};
let sub = nc.subscribe(NATS.createInbox(), opts, (msg) =&gt; {
t.log(msg);
});
// another way after 10 messages
let sub2 = nc.subscribe(NATS.createInbox(), (err, msg) =&gt; {
t.log(msg.data);
});
// if the subscription already received 10 messages, the handler
// won&#39;t get any more messages
nc.unsubscribe(sub2, 10);
</code></pre>
</div>
<div class="tab__content">
<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()
await nc.connect(servers=[&#34;nats://demo.nats.io:4222&#34;])
async def cb(msg):
print(msg)
sid = await nc.subscribe(&#34;updates&#34;, cb=cb)
await nc.auto_unsubscribe(sid, 1)
await nc.publish(&#34;updates&#34;, b&#39;All is Well&#39;)
# Won&#39;t be received...
await nc.publish(&#34;updates&#34;, b&#39;...&#39;)
</code></pre>
</div>
<div class="tab__content">
<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 &#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
nc.subscribe(&#34;time&#34;, max: 1) 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;
# 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_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.
// The server will auto-cancel.
let opts = {max: 10};
let sub = await nc.subscribe(createInbox(), (err, msg) =&gt; {
t.log(msg.data);
}, opts);
// another way after 10 messages
let sub2 = await nc.subscribe(createInbox(), (err, msg) =&gt; {
t.log(msg.data);
});
// if the subscription already received 10 messages, the handler
// won&#39;t get any more messages
sub2.unsubscribe(10);
</code></pre>
</div>
</div>