WebSockets Next integration wiht OTel and Micrometer

docs/src/main/asciidoc/websockets-next-reference.adoc

@@ -1016,6 +1016,24 @@ quarkus.log.category."io.quarkus.websockets.next.traffic".level=DEBUG <3>
 <2> Set the number of characters of a text message payload which will be logged.
 <3> Enable `DEBUG` level is for the logger `io.quarkus.websockets.next.traffic`.
 
+[[telemetry]]
+== Telemetry
+
+When the OpenTelemetry extension is present, traces for opened and closed WebSocket connections are collected by default.
+If you do not require WebSocket traces, you can disable tracing like in the example below:
+
+[source, properties]
+----
+quarkus.websockets-next.tracing.enabled=false
+----
+
+When the Micrometer extension is present, metrics for messages, errors and bytes transferred are collected.
+If you do not require WebSocket metrics, you can disable metrics like in the example below:
+
+[source, properties]
+----
+quarkus.websockets-next.metrics.enabled=false
+----
 
 [[websocket-next-configuration-reference]]
 == Configuration reference

extensions/websockets-next/deployment/pom.xml

@@ -80,6 +80,12 @@
             <artifactId>mutiny-kotlin</artifactId>
             <scope>test</scope>
         </dependency>
+        <!-- Needed for InMemorySpanExporter to verify captured traces -->
+        <dependency>
+            <groupId>io.opentelemetry</groupId>
+            <artifactId>opentelemetry-sdk-testing</artifactId>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>

extensions/websockets-next/deployment/src/test/java/io/quarkus/websockets/next/test/telemetry/AbstractWebSocketsOnMessageTest.java

@@ -0,0 +1,287 @@
+package io.quarkus.websockets.next.test.telemetry;
+
+import static io.quarkus.websockets.next.test.telemetry.Connection.sendAndAssertResponses;
+import static io.quarkus.websockets.next.test.telemetry.MetricsAsserter.stringToBytes;
+
+import java.net.URI;
+import java.util.List;
+
+import jakarta.inject.Inject;
+
+import org.jboss.shrinkwrap.api.asset.StringAsset;
+import org.junit.jupiter.api.Test;
+
+import io.quarkus.builder.Version;
+import io.quarkus.maven.dependency.Dependency;
+import io.quarkus.test.QuarkusUnitTest;
+import io.quarkus.test.common.http.TestHTTPResource;
+import io.quarkus.websockets.next.WebSocketClientConnection;
+import io.quarkus.websockets.next.WebSocketConnector;
+import io.quarkus.websockets.next.test.utils.WSClient;
+import io.vertx.core.Vertx;
+import io.vertx.core.buffer.Buffer;
+
+public abstract class AbstractWebSocketsOnMessageTest {
+
+    static QuarkusUnitTest createQuarkusUnitTest(String endpointsPackage) {
+        return new QuarkusUnitTest()
+                .withApplicationRoot(root -> root
+                        .addPackage(endpointsPackage)
+                        .addClasses(WSClient.class, Connection.class, MetricsAsserter.class,
+                                AbstractWebSocketsOnMessageTest.class)
+                        .addAsResource(new StringAsset("""
+                                bounce-endpoint.prefix-responses=true
+                                """), "application.properties"))
+                .setForcedDependencies(
+                        List.of(Dependency.of("io.quarkus", "quarkus-micrometer-registry-prometheus-deployment",
+                                Version.getVersion())));
+    }
+
+    private final MetricsAsserter asserter = new MetricsAsserter();
+
+    @TestHTTPResource("bounce")
+    URI bounceUri;
+
+    @TestHTTPResource("/")
+    URI baseUri;
+
+    @TestHTTPResource("received-single-text-response-none")
+    URI singleTextReceived_NoResponse_Uri;
+
+    @TestHTTPResource("received-single-text-response-multi-text")
+    URI singleTextReceived_MultiTextResponse_Uri;
+
+    @TestHTTPResource("received-multi-text-response-none")
+    URI multiTextReceived_NoResponse_Uri;
+
+    @TestHTTPResource("received-multi-text-response-single-text")
+    URI multiTextReceived_SingleTextResponse_Uri;
+
+    @TestHTTPResource("received-multi-text-response-multi-text")
+    URI multiTextReceived_MultiTextResponse_Uri;
+
+    @TestHTTPResource("received-single-text-response-uni-text")
+    URI singleTextReceived_UniTextResponse_Uri;
+
+    @TestHTTPResource("received-single-dto-response-single-dto")
+    URI singleDtoReceived_SingleDtoResponse_Uri;
+
+    @TestHTTPResource("received-single-dto-response-none")
+    URI singleDtoReceived_NoResponse_Uri;
+
+    @TestHTTPResource("received-single-dto-response-uni-dto")
+    URI singleDtoReceived_UniDtoResponse_Uri;
+
+    @TestHTTPResource("received-single-dto-response-multi-dto")
+    URI singleDtoReceived_MultiDtoResponse_Uri;
+
+    @TestHTTPResource("received-multi-dto-response-none")
+    URI multiDtoReceived_NoResponse_Uri;
+
+    @TestHTTPResource("received-multi-dto-response-single-dto")
+    URI multiDtoReceived_SingleDtoResponse_Uri;
+
+    @TestHTTPResource("received-multi-dto-response-multi-dto")
+    URI multiDtoReceived_MultiDtoResponse_Uri;
+
+    @TestHTTPResource("broadcast")
+    URI broadcast_Uri;
+
+    @Inject
+    Vertx vertx;
+
+    protected abstract boolean binaryMode();
+
+    protected abstract WebSocketConnector<?> bounceClientConnector();
+
+    protected abstract WebSocketConnector<?> multiClientConnector();
+
+    @Test
+    public void testServerEndpoint_SingleTextReceived_NoSent() {
+        // endpoint: void onMessage(String message)
+        var connection = Connection.of(singleTextReceived_NoResponse_Uri, false, 0, binaryMode(), "Ballad of a Prodigal Son");
+        sendAndAssertResponses(vertx, connection);
+        asserter.assertMetrics(0, 0, 1, 0, connection);
+    }
+
+    @Test
+    public void testServerEndpoint_SingleTextReceived_SingleTextSent() {
+        // endpoint: String onMessage(String message)
+        var connection = Connection.of(bounceUri, false, 1, binaryMode(), "Can't Find My Way Home");
+        sendAndAssertResponses(vertx, connection);
+        asserter.assertMetrics(0, 0, 1, 1, connection);
+    }
+
+    @Test
+    public void testServerEndpoint_SingleTextReceived_MultiTextSent() {
+        // endpoint: Multi<String> onMessage(String message)
+        var connection = Connection.of(singleTextReceived_MultiTextResponse_Uri, false, 2, binaryMode(),
+                "Always take a banana to a party");
+        sendAndAssertResponses(vertx, connection);
+        asserter.assertMetrics(0, 0, 1, 2, connection);
+    }
+
+    @Test
+    public void testServerEndpoint_MultiTextReceived_NoSent() {
+        // endpoint: void onMessage(Multi<String> message)
+        var connection = Connection.of(multiTextReceived_NoResponse_Uri, false, 0, binaryMode(), "When I go",
+                "don't cry for me",
+                "In my Father's arms I'll be", "The wounds this world left on my soul");
+        sendAndAssertResponses(vertx, connection);
+        asserter.assertMetrics(0, 0, 4, 0, connection);
+    }
+
+    @Test
+    public void testServerEndpoint_MultiTextReceived_SingleTextSent() {
+        // endpoint: String onMessage(Multi<String> message)
+        var connection = Connection.of(multiTextReceived_SingleTextResponse_Uri, false, 1, "Alpha Shallows", binaryMode(),
+                "Msg1",
+                "Msg2", "Msg3", "Msg4");
+        sendAndAssertResponses(vertx, connection);
+        asserter.assertMetrics(0, 0, 4, 1, connection);
+    }
+
+    @Test
+    public void testServerEndpoint_MultiTextReceived_MultiTextSent() {
+        // endpoint: Multi<String> onMessage(Multi<String> message)
+        var connection = Connection.of(multiTextReceived_MultiTextResponse_Uri, false, 2, binaryMode(), "Msg1", "Msg2", "Msg3");
+        sendAndAssertResponses(vertx, connection);
+        asserter.assertMetrics(0, 0, 3, 6, connection);
+    }
+
+    @Test
+    public void testServerEndpoint_SingleTextReceived_UniTextSent() {
+        // endpoint: Uni<String> onMessage(String message)
+        var connection = Connection.of(singleTextReceived_UniTextResponse_Uri, false, 1, binaryMode(), "Bernie Sanders");
+        sendAndAssertResponses(vertx, connection);
+        asserter.assertMetrics(0, 0, 1, 1, connection);
+    }
+
+    @Test
+    public void testServerEndpoint_SingleDtoReceived_NoSent() {
+        // endpoint: void onMessage(Dto dto)
+        var connection = Connection.of(singleDtoReceived_NoResponse_Uri, false, 0, binaryMode(),
+                "major disappointment speaking");
+        sendAndAssertResponses(vertx, connection);
+        asserter.assertMetrics(0, 0, 1, 0, connection);
+    }
+
+    @Test
+    public void testServerEndpoint_SingleDtoReceived_SingleDtoSent() {
+        // endpoint: Dto onMessage(Dto dto)
+        var connection = Connection.of(singleDtoReceived_SingleDtoResponse_Uri, false, 1, binaryMode(), "abcd123456");
+        sendAndAssertResponses(vertx, connection);
+        asserter.assertMetrics(0, 0, 1, 1, connection);
+    }
+
+    @Test
+    public void testServerEndpoint_SingleDtoReceived_UniDtoSent() {
+        // endpoint: Uni<Dto> onMessage(Dto dto)
+        var connection = Connection.of(singleDtoReceived_UniDtoResponse_Uri, false, 1, binaryMode(),
+                "Shot heard round the world");
+        sendAndAssertResponses(vertx, connection);
+        asserter.assertMetrics(0, 0, 1, 1, connection);
+    }
+
+    @Test
+    public void testServerEndpoint_SingleDtoReceived_MultiDtoSent() {
+        // endpoint: Multi<Dto> onMessage(Dto dto)
+        var connection = Connection.of(singleDtoReceived_MultiDtoResponse_Uri, false, 2, binaryMode(),
+                "Bananas are good");
+        sendAndAssertResponses(vertx, connection);
+        asserter.assertMetrics(0, 0, 1, 2, connection);
+    }
+
+    @Test
+    public void testServerEndpoint_MultiDtoReceived_NoSent() {
+        // endpoint: void onMessage(Multi<Dto> dto)
+        var connection = Connection.of(multiDtoReceived_NoResponse_Uri, false, 0, binaryMode(), "Tell me how ya livin",
+                "Soljie what ya got givin");
+        sendAndAssertResponses(vertx, connection);
+        asserter.assertMetrics(0, 0, 2, 0, connection);
+    }
+
+    @Test
+    public void testServerEndpoint_MultiDtoReceived_SingleDtoSent() {
+        // endpoint: Dto onMessage(Multi<Dto> message)
+        var connection = Connection.of(multiDtoReceived_SingleDtoResponse_Uri, false, 1, "ut labore et dolore magna aliqua",
+                binaryMode(), "Lorem ipsum dolor sit amet", "consectetur adipiscing elit", "sed do eiusmod tempor incididunt");
+        sendAndAssertResponses(vertx, connection);
+        asserter.assertMetrics(0, 0, 3, 1, connection);
+    }
+
+    @Test
+    public void testServerEndpoint_MultiDtoReceived_MultiDtoSent() {
+        // endpoint: Multi<Dto> onMessage(Multi<Dto> dto)
+        var connection = Connection.of(multiDtoReceived_MultiDtoResponse_Uri, false, 2, binaryMode(), "Right", "Left");
+        sendAndAssertResponses(vertx, connection);
+        asserter.assertMetrics(0, 0, 2, 4, connection);
+    }
+
+    @Test
+    public void testClientEndpoint_SingleTextReceived_NoSent() {
+        var clientConn = bounceClientConnector().baseUri(baseUri).connectAndAwait();
+        var msg1 = "Ut enim ad minim veniam";
+        sendClientMessageAndWait(clientConn, msg1);
+        // 'clientConn' sends 'Ut enim ad minim veniam'
+        // 'BounceEndpoint' -> 'String onMessage(String message)' sends 'Response 0: Ut enim ad minim veniam'
+        // 'BounceClient' -> 'void echo(String message)' receives 'Response 0: Ut enim ad minim veniam'
+        // that is received 2 messages and sent 2 messages
+        int bytes = stringToBytes(msg1, "Response 0: " + msg1);
+        asserter.assertMetrics(0, 0, 2, 2, bytes, bytes);
+
+        msg1 = "quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat";
+        var msg2 = "Duis aute irure dolor in reprehenderit";
+        sendClientMessageAndWait(clientConn, msg1);
+        sendClientMessageAndWait(clientConn, msg2);
+        bytes = stringToBytes(msg1, "Response 0: " + msg1, msg2, "Response 0: " + msg2);
+        asserter.assertMetrics(0, 0, 4, 4, bytes, bytes);
+    }
+
+    @Test
+    public void testClientEndpoint_MultiTextReceived_MultiTextSent() {
+        var clientConn = multiClientConnector().baseUri(baseUri).connectAndAwait();
+        var msg1 = "in voluptate velit esse cillum dolore eu fugiat nulla pariatur";
+        var msg2 = "Excepteur sint occaecat cupidatat non proident";
+        sendClientMessageAndWait(clientConn, msg1);
+        sendClientMessageAndWait(clientConn, msg2);
+        int bytes = stringToBytes(msg1, msg1, "Response 0: " + msg1, msg2, msg2, "Response 0: " + msg2);
+        // 2 sent: 'clientConn' sends 2 messages
+        // 2 sent, 2 received: 'MultiEndpoint' -> 'Multi<String> echo(Multi<String> messages)' -> accepts and receives message
+        // 2 sent, 2 received: 'MultiClient' -> 'Multi<String> echo(Multi<String> messages)' -> accepts, receives, adds "Response 0: "
+        // 2 received: 'MultiEndpoint' -> accepts and returns empty Multi
+        asserter.assertMetrics(0, 0, 6, 6, bytes, bytes);
+    }
+
+    @Test
+    public void testServerEndpoint_broadcasting() {
+        // broadcast = true
+        // endpoint: String onMessage(String message)
+
+        var msg1 = "It's alright ma";
+        // expected metrics:
+        // endpoint receives msg1
+        // 2 connections are opened so 2 responses are expected
+        int sentBytes = stringToBytes("Response 0: " + msg1, "Response 0: " + msg1);
+        int receivedBytes = stringToBytes(msg1);
+        var connection1 = Connection.of(broadcast_Uri, true, 1, binaryMode(), msg1);
+
+        var msg2 = "I'm Only Bleeding";
+        // expected metrics:
+        // endpoint receives msg2
+        // 2 connections are opened so 2 responses are expected
+        sentBytes += stringToBytes("Response 0: " + msg2, "Response 0: " + msg2);
+        receivedBytes += stringToBytes(msg2);
+        var connection2 = Connection.of(broadcast_Uri, true, 1, binaryMode(), msg2);
+        sendAndAssertResponses(vertx, connection1, connection2);
+        asserter.assertMetrics(0, 0, 2, 4, sentBytes, receivedBytes);
+    }
+
+    private void sendClientMessageAndWait(WebSocketClientConnection clientConn, String msg1) {
+        if (binaryMode()) {
+            clientConn.sendBinaryAndAwait(Buffer.buffer(msg1));
+        } else {
+            clientConn.sendTextAndAwait(msg1);
+        }
+    }
+}