Improve configuration support for Observability integration.

Closes: #4216

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/observability/EnableMongoObservability.java

@@ -0,0 +1,16 @@
+package org.springframework.data.mongodb.observability;
+
+import java.lang.annotation.*;
+
+import org.springframework.context.annotation.Import;
+
+/**
+ * Annotation to active Spring Data MongoDB's usage of Micrometer's Observation API.
+ */
+@Inherited
+@Documented
+@Target(ElementType.TYPE)
+@Retention(RetentionPolicy.RUNTIME)
+@Import(MongoMetricsConfiguration.class)
+public @interface EnableMongoObservability {
+}

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/observability/MongoMetricsConfiguration.java

@@ -0,0 +1,21 @@
+package org.springframework.data.mongodb.observability;
+
+import io.micrometer.observation.ObservationRegistry;
+import io.micrometer.tracing.Tracer;
+import org.springframework.context.annotation.Bean;
+
+/**
+ * Class to configure needed beans for MongoDB + Micrometer.
+ */
+public class MongoMetricsConfiguration {
+
+    @Bean
+    MongoObservationCommandListener mongoObservationCommandListener(ObservationRegistry registry) {
+        return new MongoObservationCommandListener(registry);
+    }
+
+    @Bean
+    MongoTracingObservationHandler mongoTracingObservationHandler(Tracer tracer) {
+        return new MongoTracingObservationHandler(tracer);
+    }
+}

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/observability/MongoMetricsConfigurationHelper.java

@@ -0,0 +1,21 @@
+package org.springframework.data.mongodb.observability;
+
+import io.micrometer.observation.Observation;
+import io.micrometer.observation.ObservationRegistry;
+import io.micrometer.tracing.Tracer;
+
+import com.mongodb.client.SynchronousContextProvider;
+
+/**
+ * Helper functions to ease registration of Spring Data MongoDB's observability.
+ */
+public class MongoMetricsConfigurationHelper {
+
+	public static SynchronousContextProvider synchronousContextProvider(Tracer tracer, ObservationRegistry registry) {
+		return () -> new SynchronousTraceRequestContext(tracer).withObservation(Observation.start("name", registry));
+	}
+
+	public static void addObservationHandler(ObservationRegistry registry, Tracer tracer) {
+		registry.observationConfig().observationHandler(new MongoTracingObservationHandler(tracer));
+	}
+}

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/observability/MongoMetricsReactiveConfigurationHelper.java

@@ -0,0 +1,24 @@
+package org.springframework.data.mongodb.observability;
+
+import io.micrometer.observation.Observation;
+import io.micrometer.observation.ObservationRegistry;
+import reactor.core.CoreSubscriber;
+import reactor.util.context.Context;
+
+import com.mongodb.reactivestreams.client.ReactiveContextProvider;
+
+/**
+ * Helper functions to ease registration of Spring Data MongoDB's observability.
+ */
+public class MongoMetricsReactiveConfigurationHelper {
+
+	public static ReactiveContextProvider reactiveContextProvider(ObservationRegistry registry) {
+		return subscriber -> {
+			if (subscriber instanceof CoreSubscriber<?> coreSubscriber) {
+				return new ReactiveTraceRequestContext(coreSubscriber.currentContext())
+						.withObservation(Observation.start("name", registry));
+			}
+			return new ReactiveTraceRequestContext(Context.empty()).withObservation(Observation.start("name", registry));
+		};
+	}
+}

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/observability/MongoTracingObservationHandler.java

@@ -16,6 +16,7 @@
 package org.springframework.data.mongodb.observability;
 
 import io.micrometer.observation.Observation;
+import io.micrometer.observation.ObservationRegistry;
 import io.micrometer.tracing.Span;
 import io.micrometer.tracing.Tracer;
 import io.micrometer.tracing.handler.TracingObservationHandler;
@@ -49,6 +50,10 @@ public class MongoTracingObservationHandler implements TracingObservationHandler
 		this.tracer = tracer;
 	}
 
+	public void register(ObservationRegistry observationRegistry) {
+		observationRegistry.observationConfig().observationHandler(this);
+	}
+
 	@Override
 	public Tracer getTracer() {
 		return this.tracer;

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/observability/ReactiveTraceRequestContext.java

@@ -0,0 +1,20 @@
+package org.springframework.data.mongodb.observability;
+
+import io.micrometer.observation.Observation;
+import reactor.util.context.ContextView;
+
+import java.util.Map;
+import java.util.stream.Collectors;
+
+class ReactiveTraceRequestContext extends TraceRequestContext {
+
+	ReactiveTraceRequestContext withObservation(Observation value) {
+
+		put(Observation.class, value);
+		return this;
+	}
+
+	ReactiveTraceRequestContext(ContextView context) {
+		super(context.stream().collect(Collectors.toConcurrentMap(Map.Entry::getKey, Map.Entry::getValue)));
+	}
+}

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/observability/SynchronousTraceRequestContext.java

@@ -0,0 +1,38 @@
+package org.springframework.data.mongodb.observability;
+
+import io.micrometer.observation.Observation;
+import io.micrometer.tracing.Span;
+import io.micrometer.tracing.TraceContext;
+import io.micrometer.tracing.Tracer;
+
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+class SynchronousTraceRequestContext extends TraceRequestContext {
+
+	SynchronousTraceRequestContext(Tracer tracer) {
+		super(context(tracer));
+	}
+
+	SynchronousTraceRequestContext withObservation(Observation value) {
+
+		put(Observation.class, value);
+		return this;
+	}
+
+	private static Map<Object, Object> context(Tracer tracer) {
+
+		Map<Object, Object> map = new ConcurrentHashMap<>();
+
+		Span currentSpan = tracer.currentSpan();
+
+		if (currentSpan == null) {
+			return map;
+		}
+
+		map.put(Span.class, currentSpan);
+		map.put(TraceContext.class, currentSpan.context());
+
+		return map;
+	}
+}

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/observability/TraceRequestContext.java

@@ -0,0 +1,77 @@
+/*
+ * Copyright 2013-2022 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.data.mongodb.observability;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.stream.Stream;
+
+import com.mongodb.RequestContext;
+
+/**
+ * A {@link Map}-based {@link RequestContext}.
+ *
+ * @author Marcin Grzejszczak
+ * @author Greg Turnquist
+ * @since 4.0.0
+ */
+class TraceRequestContext implements RequestContext {
+
+	private final Map<Object, Object> map;
+
+	public TraceRequestContext() {
+		this(new HashMap<>());
+	}
+
+	public TraceRequestContext(Map<Object, Object> context) {
+		this.map = context;
+	}
+
+	@Override
+	public <T> T get(Object key) {
+		return (T) map.get(key);
+	}
+
+	@Override
+	public boolean hasKey(Object key) {
+		return map.containsKey(key);
+	}
+
+	@Override
+	public boolean isEmpty() {
+		return map.isEmpty();
+	}
+
+	@Override
+	public void put(Object key, Object value) {
+		map.put(key, value);
+	}
+
+	@Override
+	public void delete(Object key) {
+		map.remove(key);
+	}
+
+	@Override
+	public int size() {
+		return map.size();
+	}
+
+	@Override
+	public Stream<Map.Entry<Object, Object>> stream() {
+		return map.entrySet().stream();
+	}
+}

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/observability/MongoObservationCommandListenerForTracingTests.java

@@ -77,10 +77,10 @@ class MongoObservationCommandListenerForTracingTests {
 	void successfullyCompletedCommandShouldCreateSpanWhenParentSampleInRequestContext() {
 
 		// given
-		TestRequestContext testRequestContext = createTestRequestContextWithParentObservationAndStartIt();
+		TraceRequestContext traceRequestContext = createTestRequestContextWithParentObservationAndStartIt();
 
 		// when
-		commandStartedAndSucceeded(testRequestContext);
+		commandStartedAndSucceeded(traceRequestContext);
 
 		// then
 		assertThatMongoSpanIsClientWithTags().hasIpThatIsBlank().hasPortThatIsNotSet();
@@ -91,10 +91,10 @@ class MongoObservationCommandListenerForTracingTests {
 
 		// given
 		handler.setSetRemoteIpAndPortEnabled(true);
-		TestRequestContext testRequestContext = createTestRequestContextWithParentObservationAndStartIt();
+		TraceRequestContext traceRequestContext = createTestRequestContextWithParentObservationAndStartIt();
 
 		// when
-		commandStartedAndSucceeded(testRequestContext);
+		commandStartedAndSucceeded(traceRequestContext);
 
 		// then
 		assertThatMongoSpanIsClientWithTags().hasIpThatIsNotBlank().hasPortThatIsSet();
@@ -104,10 +104,10 @@ class MongoObservationCommandListenerForTracingTests {
 	void commandWithErrorShouldCreateTimerWhenParentSampleInRequestContext() {
 
 		// given
-		TestRequestContext testRequestContext = createTestRequestContextWithParentObservationAndStartIt();
+		TraceRequestContext traceRequestContext = createTestRequestContextWithParentObservationAndStartIt();
 
 		// when
-		listener.commandStarted(new CommandStartedEvent(testRequestContext, 0, //
+		listener.commandStarted(new CommandStartedEvent(traceRequestContext, 0, //
 				new ConnectionDescription( //
 						new ServerId( //
 								new ClusterId("description"), //
@@ -115,17 +115,17 @@ class MongoObservationCommandListenerForTracingTests {
 				"database", "insert", //
 				new BsonDocument("collection", new BsonString("user"))));
 		listener.commandFailed( //
-				new CommandFailedEvent(testRequestContext, 0, null, "insert", 0, new IllegalAccessException()));
+				new CommandFailedEvent(traceRequestContext, 0, null, "insert", 0, new IllegalAccessException()));
 
 		// then
 		assertThatMongoSpanIsClientWithTags().assertThatThrowable().isInstanceOf(IllegalAccessException.class);
 	}
 
 	/**
-	 * Create a parent {@link Observation} then wrap it inside a {@link TestRequestContext}.
+	 * Create a parent {@link Observation} then wrap it inside a {@link TraceRequestContext}.
 	 */
 	@NotNull
-	private TestRequestContext createTestRequestContextWithParentObservationAndStartIt() {
+	private TraceRequestContext createTestRequestContextWithParentObservationAndStartIt() {
 
 		Observation parent = Observation.start("name", observationRegistry);
 		return TestRequestContext.withObservation(parent);
@@ -134,13 +134,13 @@ class MongoObservationCommandListenerForTracingTests {
 	/**
 	 * Execute MongoDB's {@link com.mongodb.event.CommandListener#commandStarted(CommandStartedEvent)} and
 	 * {@link com.mongodb.event.CommandListener#commandSucceeded(CommandSucceededEvent)} operations against the
-	 * {@link TestRequestContext} in order to inject some test data.
+	 * {@link TraceRequestContext} in order to inject some test data.
 	 *
-	 * @param testRequestContext
+	 * @param traceRequestContext
 	 */
-	private void commandStartedAndSucceeded(TestRequestContext testRequestContext) {
+	private void commandStartedAndSucceeded(TraceRequestContext traceRequestContext) {
 
-		listener.commandStarted(new CommandStartedEvent(testRequestContext, 0, //
+		listener.commandStarted(new CommandStartedEvent(traceRequestContext, 0, //
 				new ConnectionDescription( //
 						new ServerId( //
 								new ClusterId("description"), //
@@ -148,7 +148,7 @@ class MongoObservationCommandListenerForTracingTests {
 				"database", "insert", //
 				new BsonDocument("collection", new BsonString("user"))));
 
-		listener.commandSucceeded(new CommandSucceededEvent(testRequestContext, 0, null, "insert", null, 0));
+		listener.commandSucceeded(new CommandSucceededEvent(traceRequestContext, 0, null, "insert", null, 0));
 	}
 
 	/**

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/observability/MongoObservationCommandListenerTests.java

@@ -87,7 +87,7 @@ class MongoObservationCommandListenerTests {
 	void commandStartedShouldNotInstrumentWhenNoParentSampleInRequestContext() {
 
 		// when
-		listener.commandStarted(new CommandStartedEvent(new TestRequestContext(), 0, null, "some name", "", null));
+		listener.commandStarted(new CommandStartedEvent(new TraceRequestContext(), 0, null, "some name", "", null));
 
 		// then
 		assertThat(meterRegistry).hasNoMetrics();
@@ -98,17 +98,17 @@ class MongoObservationCommandListenerTests {
 
 		// given
 		Observation parent = Observation.start("name", observationRegistry);
-		TestRequestContext testRequestContext = TestRequestContext.withObservation(parent);
+		TraceRequestContext traceRequestContext = TestRequestContext.withObservation(parent);
 
 		// when
-		listener.commandStarted(new CommandStartedEvent(testRequestContext, 0, //
+		listener.commandStarted(new CommandStartedEvent(traceRequestContext, 0, //
 				new ConnectionDescription( //
 						new ServerId( //
 								new ClusterId("description"), //
 								new ServerAddress("localhost", 1234))),
 				"database", "insert", //
 				new BsonDocument("collection", new BsonString("user"))));
-		listener.commandSucceeded(new CommandSucceededEvent(testRequestContext, 0, null, "insert", null, 0));
+		listener.commandSucceeded(new CommandSucceededEvent(traceRequestContext, 0, null, "insert", null, 0));
 
 		// then
 		assertThatTimerRegisteredWithTags();
@@ -119,17 +119,17 @@ class MongoObservationCommandListenerTests {
 
 		// given
 		Observation parent = Observation.start("name", observationRegistry);
-		TestRequestContext testRequestContext = TestRequestContext.withObservation(parent);
+		TraceRequestContext traceRequestContext = TestRequestContext.withObservation(parent);
 
 		// when
-		listener.commandStarted(new CommandStartedEvent(testRequestContext, 0, //
+		listener.commandStarted(new CommandStartedEvent(traceRequestContext, 0, //
 				new ConnectionDescription( //
 						new ServerId( //
 								new ClusterId("description"), //
 								new ServerAddress("localhost", 1234))), //
 				"database", "aggregate", //
 				new BsonDocument("aggregate", new BsonString("user"))));
-		listener.commandSucceeded(new CommandSucceededEvent(testRequestContext, 0, null, "aggregate", null, 0));
+		listener.commandSucceeded(new CommandSucceededEvent(traceRequestContext, 0, null, "aggregate", null, 0));
 
 		// then
 		assertThatTimerRegisteredWithTags();
@@ -140,12 +140,12 @@ class MongoObservationCommandListenerTests {
 
 		// given
 		Observation parent = Observation.start("name", observationRegistry);
-		TestRequestContext testRequestContext = TestRequestContext.withObservation(parent);
+		TraceRequestContext traceRequestContext = TestRequestContext.withObservation(parent);
 
 		// when
-		listener.commandStarted(new CommandStartedEvent(testRequestContext, 0, null, "database", "insert",
+		listener.commandStarted(new CommandStartedEvent(traceRequestContext, 0, null, "database", "insert",
 				new BsonDocument("collection", new BsonString("user"))));
-		listener.commandSucceeded(new CommandSucceededEvent(testRequestContext, 0, null, "insert", null, 0));
+		listener.commandSucceeded(new CommandSucceededEvent(traceRequestContext, 0, null, "insert", null, 0));
 
 		// then
 		assertThat(meterRegistry).hasTimerWithNameAndTags(HighCardinalityCommandKeyNames.MONGODB_COMMAND.asString(),
@@ -157,10 +157,10 @@ class MongoObservationCommandListenerTests {
 
 		// given
 		Observation parent = Observation.start("name", observationRegistry);
-		TestRequestContext testRequestContext = TestRequestContext.withObservation(parent);
+		TraceRequestContext traceRequestContext = TestRequestContext.withObservation(parent);
 
 		// when
-		listener.commandStarted(new CommandStartedEvent(testRequestContext, 0, //
+		listener.commandStarted(new CommandStartedEvent(traceRequestContext, 0, //
 				new ConnectionDescription( //
 						new ServerId( //
 								new ClusterId("description"), //
@@ -168,7 +168,7 @@ class MongoObservationCommandListenerTests {
 				"database", "insert", //
 				new BsonDocument("collection", new BsonString("user"))));
 		listener.commandFailed( //
-				new CommandFailedEvent(testRequestContext, 0, null, "insert", 0, new IllegalAccessException()));
+				new CommandFailedEvent(traceRequestContext, 0, null, "insert", 0, new IllegalAccessException()));
 
 		// then
 		assertThatTimerRegisteredWithTags();

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/observability/TestRequestContext.java

@@ -1,78 +1,26 @@
-/*
- * Copyright 2013-2022 the original author or authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      https://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
 package org.springframework.data.mongodb.observability;
 
 import io.micrometer.observation.Observation;
 
-import java.util.HashMap;
 import java.util.Map;
-import java.util.stream.Stream;
+import java.util.concurrent.ConcurrentHashMap;
 
-import com.mongodb.RequestContext;
-
-/**
- * A {@link Map}-based {@link RequestContext}. (For test purposes only).
- *
- * @author Marcin Grzejszczak
- * @author Greg Turnquist
- * @since 4.0.0
- */
-class TestRequestContext implements RequestContext {
-
-	private final Map<Object, Object> map = new HashMap<>();
-
-	@Override
-	public <T> T get(Object key) {
-		return (T) map.get(key);
-	}
-
-	@Override
-	public boolean hasKey(Object key) {
-		return map.containsKey(key);
-	}
-
-	@Override
-	public boolean isEmpty() {
-		return map.isEmpty();
-	}
-
-	@Override
-	public void put(Object key, Object value) {
-		map.put(key, value);
-	}
-
-	@Override
-	public void delete(Object key) {
-		map.remove(key);
-	}
-
-	@Override
-	public int size() {
-		return map.size();
-	}
-
-	@Override
-	public Stream<Map.Entry<Object, Object>> stream() {
-		return map.entrySet().stream();
-	}
+class TestRequestContext extends TraceRequestContext {
 
 	static TestRequestContext withObservation(Observation value) {
+		return new TestRequestContext(value);
+	}
 
-		TestRequestContext testRequestContext = new TestRequestContext();
-		testRequestContext.put(Observation.class, value);
-		return testRequestContext;
+	private TestRequestContext(Observation value) {
+		super(context(value));
+	}
+
+	private static Map<Object, Object> context(Observation value) {
+
+		Map<Object, Object> map = new ConcurrentHashMap<>();
+
+		map.put(Observation.class, value);
+
+		return map;
 	}
 }

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/observability/ZipkinIntegrationTests.java

@@ -23,15 +23,16 @@ import io.micrometer.core.instrument.simple.SimpleMeterRegistry;
 import io.micrometer.observation.Observation;
 import io.micrometer.observation.ObservationHandler;
 import io.micrometer.observation.ObservationRegistry;
+import io.micrometer.tracing.Tracer;
 import io.micrometer.tracing.test.SampleTestRunner;
 import io.micrometer.tracing.test.reporter.BuildingBlocks;
+import io.micrometer.tracing.test.simple.SimpleTracer;
 
 import java.io.IOException;
 import java.util.Deque;
 import java.util.List;
 import java.util.function.BiConsumer;
 
-import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.extension.ExtendWith;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.config.PropertiesFactoryBean;
@@ -56,8 +57,8 @@ import org.springframework.test.context.ContextConfiguration;
 import org.springframework.test.context.junit.jupiter.SpringExtension;
 
 import com.mongodb.ConnectionString;
+import com.mongodb.ContextProvider;
 import com.mongodb.MongoClientSettings;
-import com.mongodb.RequestContext;
 import com.mongodb.WriteConcern;
 import com.mongodb.client.MongoClients;
 import com.mongodb.client.SynchronousContextProvider;
@@ -71,7 +72,6 @@ import com.mongodb.client.SynchronousContextProvider;
  * @author Greg Turnquist
  * @since 4.0.0
  */
-@Disabled("Run this manually to visually test spans in Zipkin")
 @ExtendWith(SpringExtension.class)
 @ContextConfiguration
 public class ZipkinIntegrationTests extends SampleTestRunner {
@@ -139,33 +139,41 @@ public class ZipkinIntegrationTests extends SampleTestRunner {
 		}
 
 		@Bean
-		MongoDatabaseFactory mongoDatabaseFactory(MongoObservationCommandListener commandListener,
-				ObservationRegistry registry) {
+		MongoDatabaseFactory mongoDatabaseFactory(MongoClientSettings settings) {
+			return new SimpleMongoClientDatabaseFactory(MongoClients.create(settings), "observable");
+		}
+
+		@Bean
+		MongoClientSettings mongoClientSettings(MongoObservationCommandListener commandListener,
+				ContextProvider contextProvider) {
 
 			ConnectionString connectionString = new ConnectionString(
 					String.format("mongodb://%s:%s/?w=majority&uuidrepresentation=javaLegacy", "127.0.0.1", 27017));
 
-			RequestContext requestContext = TestRequestContext.withObservation(Observation.start("name", registry));
-			SynchronousContextProvider contextProvider = () -> requestContext;
-
 			MongoClientSettings settings = MongoClientSettings.builder() //
 					.addCommandListener(commandListener) //
 					.contextProvider(contextProvider) //
 					.applyConnectionString(connectionString) //
 					.build();
 
-			return new SimpleMongoClientDatabaseFactory(MongoClients.create(settings), "observable");
+			return settings;
 		}
 
 		@Bean
-		MappingMongoConverter mongoConverter(MongoDatabaseFactory factory) {
-
-			MongoMappingContext mappingContext = new MongoMappingContext();
-			mappingContext.afterPropertiesSet();
+		SynchronousContextProvider contextProvider(ObservationRegistry registry) {
+			return () -> TestRequestContext.withObservation(Observation.start("name", registry));
+		}
 
+		@Bean
+		MappingMongoConverter mongoConverter(MongoMappingContext mappingContext, MongoDatabaseFactory factory) {
 			return new MappingMongoConverter(new DefaultDbRefResolver(factory), mappingContext);
 		}
 
+		@Bean
+		MongoMappingContext mappingContext() {
+			return new MongoMappingContext();
+		}
+
 		@Bean
 		MongoTemplate mongoTemplate(MongoDatabaseFactory mongoDatabaseFactory, MongoConverter mongoConverter) {
 
@@ -203,5 +211,11 @@ public class ZipkinIntegrationTests extends SampleTestRunner {
 		ObservationRegistry registry() {
 			return OBSERVATION_REGISTRY;
 		}
+
+		@Bean
+		Tracer tracer() {
+			return new SimpleTracer();
+		}
+
 	}
 }

src/main/asciidoc/reference/observability.adoc

@@ -8,3 +8,87 @@ include::{root-target}_conventions.adoc[]
 include::{root-target}_metrics.adoc[]
 
 include::{root-target}_spans.adoc[]
+
+[[observability.registration]]
+== Observability Registration
+
+Spring Data MongoDB currently has the most up-to-date code to support Observability in your MongoDB application.
+These changes, however, haven't been picked up by Spring Boot (yet).
+Until those changes are applied, if you wish to use Spring Data MongoDB's flavor of Observability, you must carry out the following steps.
+
+. First of all, you must opt into Spring Data MongoDB's configuration settings by adding the `@EnableMongoObservability` to either your `@SpringBootApplication` class or one of your configuration classes.
+. Your project must include *Spring Boot Actuator*.
+. Next you must add one of the following bean definitions based on whether you're using non-reactive or reactive Spring Data MongoDB.
++
+.Registering a synchronous (non-reactive) MongoDB Micrometer setup
+====
+[source,java]
+----
+@Bean
+MongoClientSettingsBuilderCustomizer mongoMetricsSynchronousContextProvider(Tracer tracer,
+        ObservationRegistry registry) {
+    return (clientSettingsBuilder) -> {
+        clientSettingsBuilder.contextProvider( //
+                MongoMetricsConfigurationHelper.synchronousContextProvider(tracer, registry));
+    };
+}
+----
+====
++
+.Registering a reactive MongoDB Micrometer setup
+====
+[source,java]
+----
+@Bean
+MongoClientSettingsBuilderCustomizer mongoMetricsReactiveContextProvider(ObservationRegistry registry) {
+    return (clientSettingsBuilder) -> {
+        clientSettingsBuilder.contextProvider( //
+                MongoMetricsReactiveConfigurationHelper.reactiveContextProvider(registry));
+    };
+}
+----
+====
++
+IMPORTANT: ONLY add one of these two bean definitions!
+. Add the following bean definition to listen for MongoDB command events and record them with Micrometer.
++
+.Registering to listen for MongoDB commands.
+====
+[source,java]
+----
+@Bean
+MongoClientSettingsBuilderCustomizer mongoObservationCommandListenerCustomizer(MongoDBContainer mongoDBContainer,
+        MongoObservationCommandListener commandListener) {
+    return (clientSettingsBuilder) -> clientSettingsBuilder //
+            .addCommandListener(commandListener);
+}
+----
+====
+. Add the following bean definition to register Spring Data MongoDB's trace observation handler
++
+.Registering
+====
+[source,java]
+----
+@Bean
+ObservationRegistryCustomizer<ObservationRegistry> mongoTracingHandlerCustomizer(
+        MongoTracingObservationHandler handler) {
+    return handler::register;
+}
+----
+====
+. Disable Spring Boot's autoconfigured MongoDB command listener and enable tracing manually by adding the following properties to your `application.properties`
++
+.Custom settings to apply
+====
+[source]
+----
+# Disable Spring Boot's autoconfigured tracing
+management.metrics.mongo.command.enabled=false
+# Enable it manually
+management.tracing.enabled=true
+----
+Be sure to add any other relevant settings needed to configure the tracer you are using based upon Micrometer's reference documentation.
+====
+
+This should do it! You are now running with Spring Data MongoDB's usage of Spring Observability's `Observation` API.