Update to Micrometer 2.0.0-SNAPSHOT

See gh-4079

pom.xml

@@ -54,7 +54,7 @@
 		<spring-framework.version>6.0.0-M3</spring-framework.version>
 		<spring-retry.version>1.3.2</spring-retry.version>
 		<spring-integration.version>6.0.0-M2</spring-integration.version>
-		<micrometer.version>2.0.0-M3</micrometer.version>
+		<micrometer.version>2.0.0-SNAPSHOT</micrometer.version>
 		<jackson.version>2.13.2</jackson.version>
 
 		<!-- optional production dependencies -->
@@ -79,7 +79,7 @@
 		<junit-jupiter.version>5.8.2</junit-jupiter.version>
 
 		<!-- test dependencies -->
-		<micrometer-tracing.version>1.0.0-M3</micrometer-tracing.version>
+		<micrometer-tracing.version>1.0.0-SNAPSHOT</micrometer-tracing.version>
 		<junit.version>4.13.2</junit.version>
 		<hamcrest.version>2.2</hamcrest.version>
 		<assertj.version>3.22.0</assertj.version>

spring-batch-core/pom.xml

@@ -60,6 +60,11 @@
 			<artifactId>micrometer-core</artifactId>
 			<version>${micrometer.version}</version>
 		</dependency>
+		<dependency>
+			<groupId>io.micrometer</groupId>
+			<artifactId>micrometer-observation</artifactId>
+			<version>${micrometer.version}</version>
+		</dependency>
 
 		<!-- optional production dependencies -->
 		<dependency>

spring-batch-core/src/main/java/org/springframework/batch/core/job/AbstractJob.java

@@ -23,9 +23,10 @@ import java.util.stream.Collectors;
 
 import io.micrometer.core.instrument.LongTaskTimer;
 import io.micrometer.core.instrument.Tag;
-import io.micrometer.core.instrument.observation.Observation;
+import io.micrometer.observation.Observation;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
+
 import org.springframework.batch.core.BatchStatus;
 import org.springframework.batch.core.ExitStatus;
 import org.springframework.batch.core.Job;
@@ -41,10 +42,10 @@ import org.springframework.batch.core.StepExecution;
 import org.springframework.batch.core.launch.NoSuchJobException;
 import org.springframework.batch.core.launch.support.ExitCodeMapper;
 import org.springframework.batch.core.listener.CompositeJobExecutionListener;
-import org.springframework.batch.core.observability.BatchMetrics;
 import org.springframework.batch.core.observability.BatchJobContext;
 import org.springframework.batch.core.observability.BatchJobObservation;
 import org.springframework.batch.core.observability.BatchJobTagsProvider;
+import org.springframework.batch.core.observability.BatchMetrics;
 import org.springframework.batch.core.observability.DefaultBatchJobTagsProvider;
 import org.springframework.batch.core.repository.JobRepository;
 import org.springframework.batch.core.repository.JobRestartException;

spring-batch-core/src/main/java/org/springframework/batch/core/observability/BatchJobContext.java

@@ -16,7 +16,7 @@
 
 package org.springframework.batch.core.observability;
 
-import io.micrometer.core.instrument.observation.Observation;
+import io.micrometer.observation.Observation;
 
 import org.springframework.batch.core.JobExecution;
 

spring-batch-core/src/main/java/org/springframework/batch/core/observability/BatchJobObservation.java

@@ -16,8 +16,8 @@
 
 package org.springframework.batch.core.observability;
 
-import io.micrometer.core.instrument.docs.DocumentedObservation;
-import io.micrometer.core.instrument.docs.TagKey;
+import io.micrometer.observation.docs.DocumentedObservation;
+import io.micrometer.observation.docs.TagKey;
 
 /**
  * Observation created around a Job execution.

spring-batch-core/src/main/java/org/springframework/batch/core/observability/BatchJobTagsProvider.java

@@ -16,7 +16,7 @@
 
 package org.springframework.batch.core.observability;
 
-import io.micrometer.core.instrument.observation.Observation;
+import io.micrometer.observation.Observation;
 
 /**
  * {@link Observation.TagsProvider} for {@link BatchJobContext}.

spring-batch-core/src/main/java/org/springframework/batch/core/observability/BatchMetrics.java

@@ -24,8 +24,9 @@ import io.micrometer.core.instrument.LongTaskTimer;
 import io.micrometer.core.instrument.Metrics;
 import io.micrometer.core.instrument.Tag;
 import io.micrometer.core.instrument.Timer;
-import io.micrometer.core.instrument.observation.Observation;
 import io.micrometer.core.instrument.observation.TimerObservationHandler;
+import io.micrometer.observation.Observation;
+import io.micrometer.observation.ObservationRegistry;
 
 import org.springframework.lang.Nullable;
 
@@ -52,7 +53,19 @@ public final class BatchMetrics {
 
 	public static final String STATUS_FAILURE = "FAILURE";
 
-	private BatchMetrics() {}
+	/**
+	 * Global {@link ObservationRegistry}. A {@link TimerObservationHandler} is attached
+	 * to create a {@link Timer} for every finished {@link Observation}.
+	 */
+	public static final ObservationRegistry observationRegistry;
+
+	static {
+		observationRegistry = ObservationRegistry.create();
+		observationRegistry.observationConfig().observationHandler(new TimerObservationHandler(Metrics.globalRegistry));
+	}
+
+	private BatchMetrics() {
+	}
 
 	/**
 	 * Create a {@link Timer}.
@@ -81,7 +94,7 @@ public final class BatchMetrics {
 	 * @since 5.0
 	 */
 	public static Observation createObservation(String name, Observation.Context context) {
-		return Observation.createNotStarted(name, context, Metrics.globalRegistry);
+		return Observation.createNotStarted(name, context, observationRegistry);
 	}
 
 	/**

spring-batch-core/src/main/java/org/springframework/batch/core/observability/BatchStepContext.java

@@ -16,7 +16,7 @@
 
 package org.springframework.batch.core.observability;
 
-import io.micrometer.core.instrument.observation.Observation;
+import io.micrometer.observation.Observation;
 
 import org.springframework.batch.core.StepExecution;
 

spring-batch-core/src/main/java/org/springframework/batch/core/observability/BatchStepObservation.java

@@ -16,8 +16,8 @@
 
 package org.springframework.batch.core.observability;
 
-import io.micrometer.core.instrument.docs.DocumentedObservation;
-import io.micrometer.core.instrument.docs.TagKey;
+import io.micrometer.observation.docs.DocumentedObservation;
+import io.micrometer.observation.docs.TagKey;
 
 /**
  * Observation created around a step execution.

spring-batch-core/src/main/java/org/springframework/batch/core/observability/BatchStepTagsProvider.java

@@ -16,7 +16,7 @@
 
 package org.springframework.batch.core.observability;
 
-import io.micrometer.core.instrument.observation.Observation;
+import io.micrometer.observation.Observation;
 
 /**
  * {@link Observation.TagsProvider} for {@link BatchStepContext}.

spring-batch-core/src/main/java/org/springframework/batch/core/observability/DefaultBatchJobTagsProvider.java

@@ -15,7 +15,7 @@
  */
 package org.springframework.batch.core.observability;
 
-import io.micrometer.core.instrument.Tags;
+import io.micrometer.observation.Tags;
 
 import org.springframework.batch.core.JobExecution;
 

spring-batch-core/src/main/java/org/springframework/batch/core/observability/DefaultBatchStepTagsProvider.java

@@ -15,7 +15,7 @@
  */
 package org.springframework.batch.core.observability;
 
-import io.micrometer.core.instrument.Tags;
+import io.micrometer.observation.Tags;
 
 import org.springframework.batch.core.StepExecution;
 

spring-batch-core/src/main/java/org/springframework/batch/core/step/AbstractStep.java

@@ -20,9 +20,10 @@ import java.util.Date;
 import java.util.List;
 import java.util.stream.Collectors;
 
-import io.micrometer.core.instrument.observation.Observation;
+import io.micrometer.observation.Observation;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
+
 import org.springframework.batch.core.BatchStatus;
 import org.springframework.batch.core.ExitStatus;
 import org.springframework.batch.core.JobInterruptedException;

spring-batch-core/src/test/java/org/springframework/batch/core/job/SimpleJobTests.java

@@ -16,14 +16,6 @@
 
 package org.springframework.batch.core.job;
 
-import static org.mockito.Mockito.mock;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertSame;
-import static org.junit.Assert.assertTrue;
-
 import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -61,6 +53,14 @@ import org.springframework.jdbc.datasource.DataSourceTransactionManager;
 import org.springframework.jdbc.datasource.embedded.EmbeddedDatabase;
 import org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseBuilder;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertSame;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.Mockito.mock;
+
 /**
  * Tests for DefaultJobLifecycle.
  *
@@ -208,7 +208,6 @@ public class SimpleJobTests {
 
 	@Test
 	public void testRunNormally() throws Exception {
-		Metrics.globalRegistry.withTimerObservationHandler();
 		step1.setStartLimit(5);
 		step2.setStartLimit(5);
 		job.execute(jobExecution);

spring-batch-core/src/test/java/org/springframework/batch/core/observability/BatchMetricsTests.java

@@ -27,7 +27,6 @@ import javax.sql.DataSource;
 
 import io.micrometer.core.instrument.Meter;
 import io.micrometer.core.instrument.Metrics;
-import org.junit.BeforeClass;
 import org.junit.Test;
 
 import org.springframework.batch.core.ExitStatus;
@@ -39,7 +38,6 @@ import org.springframework.batch.core.configuration.annotation.EnableBatchProces
 import org.springframework.batch.core.configuration.annotation.JobBuilderFactory;
 import org.springframework.batch.core.configuration.annotation.StepBuilderFactory;
 import org.springframework.batch.core.launch.JobLauncher;
-import org.springframework.batch.core.observability.BatchMetrics;
 import org.springframework.batch.item.support.ListItemReader;
 import org.springframework.batch.repeat.RepeatStatus;
 import org.springframework.context.ApplicationContext;
@@ -61,11 +59,6 @@ public class BatchMetricsTests {
 
 	private static final int EXPECTED_SPRING_BATCH_METRICS = 10;
 
-	@BeforeClass
-	public static void setup() {
-		Metrics.globalRegistry.withTimerObservationHandler();
-	}
-
 	@Test
 	public void testCalculateDuration() {
 		LocalDateTime startTime = LocalDateTime.now();

spring-batch-core/src/test/java/org/springframework/batch/core/step/NonAbstractStepTests.java

@@ -15,11 +15,6 @@
  */
 package org.springframework.batch.core.step;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertSame;
-import static org.junit.Assert.assertTrue;
-
 import java.util.ArrayList;
 import java.util.List;
 
@@ -30,6 +25,7 @@ import io.micrometer.core.tck.MeterRegistryAssert;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
+
 import org.springframework.batch.core.BatchStatus;
 import org.springframework.batch.core.ExitStatus;
 import org.springframework.batch.core.JobExecution;
@@ -42,6 +38,11 @@ import org.springframework.batch.item.ExecutionContext;
 import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertSame;
+import static org.junit.Assert.assertTrue;
+
 /**
  * Tests for {@link AbstractStep}.
  */
@@ -185,7 +186,6 @@ public class NonAbstractStepTests {
 	 */
 	@Test
 	public void testExecute() throws Exception {
-		Metrics.globalRegistry.withTimerObservationHandler();
 		tested.setStepExecutionListeners(new StepExecutionListener[] { listener1, listener2 });
 		tested.execute(execution);
 

spring-batch-test/src/test/java/org/springframework/batch/test/observability/ObservabilitySampleStepTests.java

@@ -15,7 +15,6 @@
  */
 package org.springframework.batch.test.observability;
 
-import io.micrometer.core.instrument.MeterRegistry;
 import io.micrometer.core.instrument.Metrics;
 import io.micrometer.core.tck.MeterRegistryAssert;
 import io.micrometer.tracing.test.SampleTestRunner;
@@ -25,6 +24,7 @@ import org.junit.jupiter.api.Assertions;
 import org.springframework.batch.core.ExitStatus;
 import org.springframework.batch.core.JobExecution;
 import org.springframework.batch.core.JobParameters;
+import org.springframework.batch.core.observability.BatchMetrics;
 import org.springframework.batch.test.JobLauncherTestUtils;
 import org.springframework.batch.test.SpringBatchTestJUnit5Tests;
 import org.springframework.batch.test.context.SpringBatchTest;
@@ -40,16 +40,13 @@ public class ObservabilitySampleStepTests extends SampleTestRunner {
 	@Autowired
 	private JobLauncherTestUtils jobLauncherTestUtils;
 
-	private static MeterRegistry registry = Metrics.globalRegistry.withTimerObservationHandler();
-
-	@Override
-	protected MeterRegistry getMeterRegistry() {
-		return registry;
+	ObservabilitySampleStepTests() {
+		super(SampleRunnerConfig.builder().build(), BatchMetrics.observationRegistry, Metrics.globalRegistry);
 	}
 
 	@AfterEach
 	void clean() {
-		registry.clear();
+		Metrics.globalRegistry.clear();
 	}
 
 	@Override