Update wildcards.md

developing-with-nats/intro-3/wildcards.md

@@ -6,13 +6,446 @@ However, there is a common technique that may come in to play when you use wildc
 
 For example, you can subscribe using `*` and then act based on the actual subject.
 
-!INCLUDE "../../\_examples/subscribe\_star.html"
+{% tabs %}
+{% tab title="Go" %}
+```go
+nc, err := nats.Connect("demo.nats.io")
+if err != nil {
+	log.Fatal(err)
+}
+defer nc.Close()
+
+// Use a WaitGroup to wait for 2 messages to arrive
+wg := sync.WaitGroup{}
+wg.Add(2)
+
+// Subscribe
+if _, err := nc.Subscribe("time.*.east", func(m *nats.Msg) {
+	log.Printf("%s: %s", m.Subject, m.Data)
+	wg.Done()
+}); err != nil {
+	log.Fatal(err)
+}
+
+// Wait for the 2 messages to come in
+wg.Wait()
+```
+{% endtab %}
+
+{% tab title="Java" %}
+```java
+Connection nc = Nats.connect("nats://demo.nats.io:4222");
+
+// Use a latch to wait for 2 messages to arrive
+CountDownLatch latch = new CountDownLatch(2);
+
+// Create a dispatcher and inline message handler
+Dispatcher d = nc.createDispatcher((msg) -> {
+    String subject = msg.getSubject();
+    String str = new String(msg.getData(), StandardCharsets.UTF_8);
+    System.out.println(subject + ": " + str);
+    latch.countDown();
+});
+
+// Subscribe
+d.subscribe("time.*.east");
+
+// Wait for messages to come in
+latch.await();
+
+// Close the connection
+nc.close();
+```
+{% endtab %}
+
+{% tab title="JavaScript" %}
+```javascript
+let nc = NATS.connect({
+    url: "nats://demo.nats.io:4222"});
+
+nc.subscribe('time.us.*', (msg, reply, subject) => {
+    // converting timezones correctly in node requires a library
+    // this doesn't take into account *many* things.
+    let time = "";
+    switch (subject) {
+        case 'time.us.east':
+            time = new Date().toLocaleTimeString("en-us", {timeZone: "America/New_York"});
+            break;
+        case 'time.us.central':
+            time = new Date().toLocaleTimeString("en-us", {timeZone: "America/Chicago"});
+            break;
+        case 'time.us.mountain':
+            time = new Date().toLocaleTimeString("en-us", {timeZone: "America/Denver"});
+            break;
+        case 'time.us.west':
+            time = new Date().toLocaleTimeString("en-us", {timeZone: "America/Los_Angeles"});
+            break;
+        default:
+            time = "I don't know what you are talking about Willis";
+    }
+    t.log(subject, time);
+});
+```
+{% endtab %}
+
+{% tab title="Python" %}
+```python
+nc = NATS()
+
+await nc.connect(servers=["nats://demo.nats.io:4222"])
+
+# Use queue to wait for 2 messages to arrive
+queue = asyncio.Queue()
+async def cb(msg):
+  await queue.put_nowait(msg)
+
+await nc.subscribe("time.*.east", cb=cb)
+
+# Send 2 messages and wait for them to come in
+await nc.publish("time.A.east", b'A')
+await nc.publish("time.B.east", b'B')
+
+msg_A = await queue.get()
+msg_B = await queue.get()
+
+print("Msg A:", msg_A)
+print("Msg B:", msg_B)
+```
+{% endtab %}
+
+{% tab title="Ruby" %}
+```ruby
+require 'nats/client'
+require 'fiber'
+
+NATS.start(servers:["nats://127.0.0.1:4222"]) do |nc|
+  Fiber.new do
+    f = Fiber.current
+
+    nc.subscribe("time.*.east") do |msg, reply|
+      f.resume Time.now
+    end
+
+    nc.publish("time.A.east", "A")
+    nc.publish("time.B.east", "B")
+
+    # Use the response
+    msg_A = Fiber.yield
+    puts "Msg A: #{msg_A}"
+
+    msg_B = Fiber.yield
+    puts "Msg B: #{msg_B}"
+
+  end.resume
+end
+```
+{% endtab %}
+
+{% tab title="TypeScript" %}
+```typescript
+await nc.subscribe('time.us.*', (err, msg) => {
+    // converting timezones correctly in node requires a library
+    // this doesn't take into account *many* things.
+    let time = "";
+    switch (msg.subject) {
+        case 'time.us.east':
+            time = new Date().toLocaleTimeString("en-us", {timeZone: "America/New_York"});
+            break;
+        case 'time.us.central':
+            time = new Date().toLocaleTimeString("en-us", {timeZone: "America/Chicago"});
+            break;
+        case 'time.us.mountain':
+            time = new Date().toLocaleTimeString("en-us", {timeZone: "America/Denver"});
+            break;
+        case 'time.us.west':
+            time = new Date().toLocaleTimeString("en-us", {timeZone: "America/Los_Angeles"});
+            break;
+        default:
+            time = "I don't know what you are talking about Willis";
+    }
+    console.log(msg.subject, time);
+});
+```
+{% endtab %}
+{% endtabs %}
 
 or do something similar with `>`:
 
-!INCLUDE "../../\_examples/subscribe\_arrow.html"
+{% tabs %}
+{% tab title="Go" %}
+```go
+nc, err := nats.Connect("demo.nats.io")
+if err != nil {
+	log.Fatal(err)
+}
+defer nc.Close()
+
+// Use a WaitGroup to wait for 4 messages to arrive
+wg := sync.WaitGroup{}
+wg.Add(4)
+
+// Subscribe
+if _, err := nc.Subscribe("time.>", func(m *nats.Msg) {
+	log.Printf("%s: %s", m.Subject, m.Data)
+	wg.Done()
+}); err != nil {
+	log.Fatal(err)
+}
+
+// Wait for the 4 messages to come in
+wg.Wait()
+
+// Close the connection
+nc.Close()
+```
+{% endtab %}
+
+{% tab title="Java" %}
+```java
+Connection nc = Nats.connect("nats://demo.nats.io:4222");
+
+// Use a latch to wait for 4 messages to arrive
+CountDownLatch latch = new CountDownLatch(4);
+
+// Create a dispatcher and inline message handler
+Dispatcher d = nc.createDispatcher((msg) -> {
+    String subject = msg.getSubject();
+    String str = new String(msg.getData(), StandardCharsets.UTF_8);
+    System.out.println(subject + ": " + str);
+    latch.countDown();
+});
+
+// Subscribe
+d.subscribe("time.>");
+
+// Wait for messages to come in
+latch.await();
+
+// Close the connection
+nc.close();
+```
+{% endtab %}
+
+{% tab title="JavaScript" %}
+```javascript
+let nc = NATS.connect({
+    url: "nats://demo.nats.io:4222"});
+
+nc.subscribe('time.>', (msg, reply, subject) => {
+    // converting timezones correctly in node requires a library
+    // this doesn't take into account *many* things.
+    let time = "";
+    switch (subject) {
+        case 'time.us.east':
+            time = new Date().toLocaleTimeString("en-us", {timeZone: "America/New_York"});
+            break;
+        case 'time.us.central':
+            time = new Date().toLocaleTimeString("en-us", {timeZone: "America/Chicago"});
+            break;
+        case 'time.us.mountain':
+            time = new Date().toLocaleTimeString("en-us", {timeZone: "America/Denver"});
+            break;
+        case 'time.us.west':
+            time = new Date().toLocaleTimeString("en-us", {timeZone: "America/Los_Angeles"});
+            break;
+        default:
+            time = "I don't know what you are talking about Willis";
+    }
+    t.log(subject, time);
+});
+```
+{% endtab %}
+
+{% tab title="Python" %}
+```python
+nc = NATS()
+
+await nc.connect(servers=["nats://demo.nats.io:4222"])
+
+# Use queue to wait for 4 messages to arrive
+queue = asyncio.Queue()
+async def cb(msg):
+  await queue.put(msg)
+
+await nc.subscribe("time.>", cb=cb)
+
+# Send 2 messages and wait for them to come in
+await nc.publish("time.A.east", b'A')
+await nc.publish("time.B.east", b'B')
+await nc.publish("time.C.west", b'C')
+await nc.publish("time.D.west", b'D')
+
+for i in range(0, 4):
+  msg = await queue.get()
+  print("Msg:", msg)
+
+await nc.close()
+```
+{% endtab %}
+
+{% tab title="Ruby" %}
+```ruby
+require 'nats/client'
+require 'fiber'
+
+NATS.start(servers:["nats://127.0.0.1:4222"]) do |nc|
+  Fiber.new do
+    f = Fiber.current
+
+    nc.subscribe("time.>") do |msg, reply|
+      f.resume Time.now.to_f
+    end
+
+    nc.publish("time.A.east", "A")
+    nc.publish("time.B.east", "B")
+    nc.publish("time.C.west", "C")
+    nc.publish("time.D.west", "D")
+
+    # Use the response
+    4.times do 
+      msg = Fiber.yield
+      puts "Msg: #{msg}"
+    end
+  end.resume
+end
+```
+{% endtab %}
+
+{% tab title="TypeScript" %}
+```typescript
+await nc.subscribe('time.>', (err, msg) => {
+    // converting timezones correctly in node requires a library
+    // this doesn't take into account *many* things.
+    let time = "";
+    switch (msg.subject) {
+        case 'time.us.east':
+            time = new Date().toLocaleTimeString("en-us", {timeZone: "America/New_York"});
+            break;
+        case 'time.us.central':
+            time = new Date().toLocaleTimeString("en-us", {timeZone: "America/Chicago"});
+            break;
+        case 'time.us.mountain':
+            time = new Date().toLocaleTimeString("en-us", {timeZone: "America/Denver"});
+            break;
+        case 'time.us.west':
+            time = new Date().toLocaleTimeString("en-us", {timeZone: "America/Los_Angeles"});
+            break;
+        default:
+            time = "I don't know what you are talking about Willis";
+    }
+    t.log(msg.subject, time);
+});
+```
+{% endtab %}
+{% endtabs %}
 
 The following example can be used to test these two subscribers. The `*` subscriber should receive at most 2 messages, while the `>` subscriber receives 4. More importantly the `time.*.east` subscriber won't receive on `time.us.east.atlanta` because that won't match.
 
-!INCLUDE "../../\_examples/wildcard\_tester.html"
+{% tabs %}
+{% tab title="Go" %}
+```go
+nc, err := nats.Connect("demo.nats.io")
+if err != nil {
+	log.Fatal(err)
+}
+defer nc.Close()
+
+zoneID, err := time.LoadLocation("America/New_York")
+if err != nil {
+	log.Fatal(err)
+}
+now := time.Now()
+zoneDateTime := now.In(zoneID)
+formatted := zoneDateTime.String()
+
+nc.Publish("time.us.east", []byte(formatted))
+nc.Publish("time.us.east.atlanta", []byte(formatted))
+
+zoneID, err = time.LoadLocation("Europe/Warsaw")
+if err != nil {
+	log.Fatal(err)
+}
+zoneDateTime = now.In(zoneID)
+formatted = zoneDateTime.String()
+
+nc.Publish("time.eu.east", []byte(formatted))
+nc.Publish("time.eu.east.warsaw", []byte(formatted))
+
+```
+{% endtab %}
+
+{% tab title="Java" %}
+```java
+Connection nc = Nats.connect("nats://demo.nats.io:4222");
+ZoneId zoneId = ZoneId.of("America/New_York");
+ZonedDateTime zonedDateTime = ZonedDateTime.ofInstant(Instant.now(), zoneId);
+String formatted = zonedDateTime.format(DateTimeFormatter.ISO_ZONED_DATE_TIME);
+
+nc.publish("time.us.east", formatted.getBytes(StandardCharsets.UTF_8));
+nc.publish("time.us.east.atlanta", formatted.getBytes(StandardCharsets.UTF_8));
+
+zoneId = ZoneId.of("Europe/Warsaw");
+zonedDateTime = ZonedDateTime.ofInstant(Instant.now(), zoneId);
+formatted = zonedDateTime.format(DateTimeFormatter.ISO_ZONED_DATE_TIME);
+nc.publish("time.eu.east", formatted.getBytes(StandardCharsets.UTF_8));
+nc.publish("time.eu.east.warsaw", formatted.getBytes(StandardCharsets.UTF_8));
+
+nc.flush(Duration.ZERO);
+nc.close();
+
+```
+{% endtab %}
+
+{% tab title="JavaScript" %}
+```javascript
+nc.publish('time.us.east');
+nc.publish('time.us.central');
+nc.publish('time.us.mountain');
+nc.publish('time.us.west');
+
+```
+{% endtab %}
+
+{% tab title="Python" %}
+```python
+nc = NATS()
+
+await nc.connect(servers=["nats://demo.nats.io:4222"])
+
+await nc.publish("time.us.east", b'...')
+await nc.publish("time.us.east.atlanta", b'...')
+
+await nc.publish("time.eu.east", b'...')
+await nc.publish("time.eu.east.warsaw", b'...')
+
+await nc.close()
+
+```
+{% endtab %}
+
+{% tab title="Ruby" %}
+```ruby
+NATS.start do |nc|
+   nc.publish("time.us.east", '...')
+   nc.publish("time.us.east.atlanta", '...')
+
+   nc.publish("time.eu.east", '...')
+   nc.publish("time.eu.east.warsaw", '...')
+
+   nc.drain
+end
+
+```
+{% endtab %}
+
+{% tab title="TypeScript" %}
+```typescript
+nc.publish('time.us.east');
+nc.publish('time.us.central');
+nc.publish('time.us.mountain');
+nc.publish('time.us.west');
+
+```
+{% endtab %}
+{% endtabs %}