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Started on developer section of the book

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Added tool to build example html
Added book.json to bring in a couple plugins
Added building_the_book.md to help with how to build things
Updated gitignore with vscode and node modules
Checking in initial version of code examples
Copy/pasted a couple pages to get started on dev book
Updated html template for dev book to support graph vis/copy icon/styles
This commit is contained in:
Stephen Asbury
2019-05-14 17:16:17 -07:00
parent 908d73835a
commit 230970f41e
62 changed files with 7202 additions and 9 deletions
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developer/examples/subscribe_json.html Normal file
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<div class="tab-wrap">
<input type="radio" id="subscribe_json_go" name="subscribe_json" class="tab" checked>
<label for="subscribe_json_go" class="api-lang" data-language="go">Go</label>
<input type="radio" id="subscribe_json_java" name="subscribe_json" class="tab">
<label for="subscribe_json_java" class="api-lang" data-language="java">Java</label>
<input type="radio" id="subscribe_json_js" name="subscribe_json" class="tab">
<label for="subscribe_json_js" class="api-lang" data-language="js">JavaScript</label>
<input type="radio" id="subscribe_json_py" name="subscribe_json" class="tab">
<label for="subscribe_json_py" class="api-lang" data-language="py">Python</label>
<input type="radio" id="subscribe_json_ruby" name="subscribe_json" class="tab">
<label for="subscribe_json_ruby" class="api-lang" data-language="ruby">Ruby</label>
<input type="radio" id="subscribe_json_ts" name="subscribe_json" class="tab">
<label for="subscribe_json_ts" class="api-lang" data-language="ts">TypeScript</label>
<div class="tab__content">
<pre id="subscribe_json_go_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/go-nats-examples/blob/master/api-examples/subscribe_json/main.go#L11-45"><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()
ec, err := nats.NewEncodedConn(nc, nats.JSON_ENCODER)
if err != nil {
log.Fatal(err)
}
defer ec.Close()
// Define the object
type stock struct {
Symbol string
Price int
}
wg := sync.WaitGroup{}
wg.Add(1)
// Subscribe
if _, err := ec.Subscribe(&#34;updates&#34;, func(s *stock) {
log.Printf(&#34;Stock: %s - Price: %v&#34;, s.Symbol, s.Price)
wg.Done()
}); err != nil {
log.Fatal(err)
}
// Wait for a message to come in
wg.Wait()
// Close the connection
ec.Close()
</code></pre>
</div>
<div class="tab__content">
<pre id="subscribe_json_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/SubscribeJSON.java#L12-57"><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">class StockForJsonSub {
public String symbol;
public float price;
public String toString() {
return symbol &#43; &#34; is at &#34; &#43; price;
}
}
public class SubscribeJSON {
public static void main(String[] args) {
try {
Connection nc = Nats.connect(&#34;nats://demo.nats.io:4222&#34;);
// Use a latch to wait for 10 messages to arrive
CountDownLatch latch = new CountDownLatch(10);
// Create a dispatcher and inline message handler
Dispatcher d = nc.createDispatcher((msg) -&gt; {
Gson gson = new Gson();
String json = new String(msg.getData(), StandardCharsets.UTF_8);
StockForJsonSub stk = gson.fromJson(json, StockForJsonSub.class);
// Use the object
System.out.println(stk);
latch.countDown();
});
// Subscribe
d.subscribe(&#34;updates&#34;);
// Wait for a message to come in
latch.await();
// Close the connection
nc.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
</code></pre>
</div>
<div class="tab__content">
<pre id="subscribe_json_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#L76-88"><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({
url: &#34;nats://demo.nats.io:4222&#34;,
json: true
});
nc.subscribe(&#39;updates&#39;, (msg) =&gt; {
if(msg &amp;&amp; msg.ticker === &#39;TSLA&#39;) {
t.log(&#39;got message:&#39;, msg);
}
});
</code></pre>
</div>
<div class="tab__content">
<pre id="subscribe_json_py_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/asyncio-nats-examples/blob/master/subscribe_json.py#L1-23"><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">import asyncio
import json
from nats.aio.client import Client as NATS
from nats.aio.errors import ErrTimeout
async def run(loop):
nc = NATS()
await nc.connect(servers=[&#34;nats://127.0.0.1:4222&#34;], loop=loop)
async def message_handler(msg):
data = json.loads(msg.data.decode())
print(data)
sid = await nc.subscribe(&#34;updates&#34;, cb=message_handler)
await nc.flush()
await nc.auto_unsubscribe(sid, 2)
await nc.publish(&#34;updates&#34;, json.dumps({&#34;symbol&#34;: &#34;GOOG&#34;, &#34;price&#34;: 1200 }).encode())
await asyncio.sleep(1, loop=loop)
await nc.close()
</code></pre>
</div>
<div class="tab__content">
<pre id="subscribe_json_ruby_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/ruby-nats-examples/blob/master/subscribe_json.rb#L1-13"><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;json&#39;
NATS.start(servers:[&#34;nats://127.0.0.1:4222&#34;]) do |nc|
nc.subscribe(&#34;updates&#34;) do |msg|
m = JSON.parse(msg)
# {&#34;symbol&#34;=&gt;&#34;GOOG&#34;, &#34;price&#34;=&gt;12}
p m
end
end
</code></pre>
</div>
<div class="tab__content">
<pre id="subscribe_json_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#L70-80"><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 = await connect({
url: &#34;nats://demo.nats.io:4222&#34;,
payload: Payload.JSON
});
nc.subscribe(&#39;updates&#39;, (err, msg) =&gt; {
t.log(&#39;got message:&#39;, msg.data ? msg.data : &#34;no payload&#34;);
});
</code></pre>
</div>
</div>