Enhance stdout exporter to include trace id (#1504)

Author: jfallows

runtime/exporter-stdout/src/main/java/io/aklivity/zilla/runtime/exporter/stdout/internal/stream/StdoutEventsStream.java

@@ -29,8 +29,8 @@
 
 public class StdoutEventsStream
 {
-    // {zilla namespace}:{component name} [dd/MMM/yyyy:HH:mm:ss Z] {event name} {event body}\n
-    private static final String FORMAT = "%s [%s] %s %s%n";
+    // {zilla namespace}:{component name} [dd/MMM/yyyy:HH:mm:ss Z] [trace id] {event name} {event body}\n
+    private static final String FORMAT = "%s [%s] [%016xd] %s %s%n";
     private static final DateTimeFormatter FORMATTER = DateTimeFormatter.ofPattern("dd/MMM/yyyy:HH:mm:ss Z");
 
     private final StdoutExporterContext context;
@@ -62,9 +62,10 @@ private void handleEvent(
     {
         final EventFW event = eventRO.wrap(buffer, index, index + length);
         String qname = context.supplyQName(event.namespacedId());
+        long traceId = event.traceId();
         String eventName = context.supplyEventName(event.id());
         String extension = formatter.format(msgTypeId, buffer, index, length);
-        out.format(FORMAT, qname, asDateTime(event.timestamp()), eventName, extension);
+        out.format(FORMAT, qname, asDateTime(event.timestamp()), traceId, eventName, extension);
     }
 
     private static String asDateTime(

runtime/exporter-stdout/src/test/java/io/aklivity/zilla/runtime/exporter/stdout/internal/events/EventIT.java

@@ -63,6 +63,6 @@ public class EventIT
     public void shouldLogEvents() throws Exception
     {
         k3po.finish();
-        output.expect(Pattern.compile("test.net0 \\[[^\\]]+\\] BINDING_TEST_CONNECTED test event message\n"));
+        output.expect(Pattern.compile("test.net0 \\[[^\\]]+\\] \\[[^\\]]+\\] BINDING_TEST_CONNECTED test event message\n"));
     }
 }