Add 'flyway' and 'liquibase' actuator endpoints

Add `/flyway` and `/liquibase` actuator endpoints to provide details of
any database migrations that have been applied.

Fixes gh-3434
Closes gh-3435

spring-boot-actuator/pom.xml

@@ -112,6 +112,11 @@
 			<artifactId>activemq-broker</artifactId>
 			<optional>true</optional>
 		</dependency>
+		<dependency>
+			<groupId>org.flywaydb</groupId>
+			<artifactId>flyway-core</artifactId>
+			<optional>true</optional>
+		</dependency>
 		<dependency>
 			<groupId>org.hibernate</groupId>
 			<artifactId>hibernate-validator</artifactId>
@@ -122,6 +127,11 @@
 			<artifactId>infinispan-spring4</artifactId>
 			<optional>true</optional>
 		</dependency>
+		<dependency>
+			<groupId>org.liquibase</groupId>
+			<artifactId>liquibase-core</artifactId>
+			<optional>true</optional>
+		</dependency>
 		<dependency>
 			<groupId>org.springframework</groupId>
 			<artifactId>spring-messaging</artifactId>

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/autoconfigure/EndpointAutoConfiguration.java

@@ -25,6 +25,9 @@ import java.util.List;
 import java.util.Map;
 import java.util.Properties;
 
+import liquibase.integration.spring.SpringLiquibase;
+
+import org.flywaydb.core.Flyway;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.boot.actuate.endpoint.AutoConfigurationReportEndpoint;
@@ -33,8 +36,10 @@ import org.springframework.boot.actuate.endpoint.ConfigurationPropertiesReportEn
 import org.springframework.boot.actuate.endpoint.DumpEndpoint;
 import org.springframework.boot.actuate.endpoint.Endpoint;
 import org.springframework.boot.actuate.endpoint.EnvironmentEndpoint;
+import org.springframework.boot.actuate.endpoint.FlywayEndpoint;
 import org.springframework.boot.actuate.endpoint.HealthEndpoint;
 import org.springframework.boot.actuate.endpoint.InfoEndpoint;
+import org.springframework.boot.actuate.endpoint.LiquibaseEndpoint;
 import org.springframework.boot.actuate.endpoint.MetricsEndpoint;
 import org.springframework.boot.actuate.endpoint.PublicMetrics;
 import org.springframework.boot.actuate.endpoint.RequestMappingEndpoint;
@@ -45,12 +50,15 @@ import org.springframework.boot.actuate.health.HealthIndicator;
 import org.springframework.boot.actuate.health.OrderedHealthAggregator;
 import org.springframework.boot.actuate.trace.InMemoryTraceRepository;
 import org.springframework.boot.actuate.trace.TraceRepository;
+import org.springframework.boot.autoconfigure.AutoConfigureAfter;
 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
 import org.springframework.boot.autoconfigure.condition.ConditionEvaluationReport;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
 import org.springframework.boot.autoconfigure.condition.SearchStrategy;
+import org.springframework.boot.autoconfigure.flyway.FlywayAutoConfiguration;
+import org.springframework.boot.autoconfigure.liquibase.LiquibaseAutoConfiguration;
 import org.springframework.boot.bind.PropertiesConfigurationFactory;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
@@ -70,8 +78,10 @@ import org.springframework.web.servlet.handler.AbstractHandlerMethodMapping;
  * @author Greg Turnquist
  * @author Christian Dupuis
  * @author Stephane Nicoll
+ * @author Eddú Meléndez
  */
 @Configuration
+@AutoConfigureAfter({ FlywayAutoConfiguration.class, LiquibaseAutoConfiguration.class })
 public class EndpointAutoConfiguration {
 
 	@Autowired
@@ -161,6 +171,32 @@ public class EndpointAutoConfiguration {
 		return new ConfigurationPropertiesReportEndpoint();
 	}
 
+	@Configuration
+	@ConditionalOnBean(Flyway.class)
+	@ConditionalOnClass(Flyway.class)
+	static class FlywayEndpointConfiguration {
+
+		@Bean
+		@ConditionalOnMissingBean
+		public FlywayEndpoint flywayEndpoint(Flyway flyway) {
+			return new FlywayEndpoint(flyway);
+		}
+
+	}
+
+	@Configuration
+	@ConditionalOnBean(SpringLiquibase.class)
+	@ConditionalOnClass(SpringLiquibase.class)
+	static class LiquibaseEndpointConfiguration {
+
+		@Bean
+		@ConditionalOnMissingBean
+		public LiquibaseEndpoint liquibaseEndpoint(SpringLiquibase liquibase) {
+			return new LiquibaseEndpoint(liquibase);
+		}
+
+	}
+
 	@Configuration
 	@ConditionalOnClass(AbstractHandlerMethodMapping.class)
 	protected static class RequestMappingEndpointConfiguration {

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/FlywayEndpoint.java

@@ -0,0 +1,121 @@
+/*
+ * Copyright 2012-2015 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
+ *
+ *      http://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.boot.actuate.endpoint;
+
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+import org.flywaydb.core.Flyway;
+import org.flywaydb.core.api.MigrationInfo;
+import org.flywaydb.core.api.MigrationState;
+import org.flywaydb.core.api.MigrationType;
+import org.springframework.boot.actuate.endpoint.FlywayEndpoint.FlywayMigration;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.util.Assert;
+
+/**
+ * {@link Endpoint} to expose flyway info.
+ *
+ * @author Eddú Meléndez
+ * @author Phillip Webb
+ * @since 1.3.0
+ */
+@ConfigurationProperties(prefix = "endpoints.flyway", ignoreUnknownFields = true)
+public class FlywayEndpoint extends AbstractEndpoint<List<FlywayMigration>> {
+
+	private final Flyway flyway;
+
+	public FlywayEndpoint(Flyway flyway) {
+		super("flyway");
+		Assert.notNull(flyway, "Flyway must not be null");
+		this.flyway = flyway;
+	}
+
+	@Override
+	public List<FlywayMigration> invoke() {
+		List<FlywayMigration> migrations = new ArrayList<FlywayMigration>();
+		for (MigrationInfo info : this.flyway.info().all()) {
+			migrations.add(new FlywayMigration(info));
+		}
+		return migrations;
+	}
+
+	public static class FlywayMigration {
+
+		private MigrationType type;
+
+		private Integer checksum;
+
+		private String version;
+
+		private String description;
+
+		private String script;
+
+		private MigrationState state;
+
+		private Date installedOn;
+
+		private Integer executionTime;
+
+		public FlywayMigration(MigrationInfo info) {
+			this.type = info.getType();
+			this.checksum = info.getChecksum();
+			this.version = info.getVersion().toString();
+			this.description = info.getDescription();
+			this.script = info.getScript();
+			this.state = info.getState();
+			this.installedOn = info.getInstalledOn();
+			this.executionTime = info.getExecutionTime();
+		}
+
+		public MigrationType getType() {
+			return this.type;
+		}
+
+		public Integer getChecksum() {
+			return this.checksum;
+		}
+
+		public String getVersion() {
+			return this.version;
+		}
+
+		public String getDescription() {
+			return this.description;
+		}
+
+		public String getScript() {
+			return this.script;
+		}
+
+		public MigrationState getState() {
+			return this.state;
+		}
+
+		public Date getInstalledOn() {
+			return this.installedOn;
+		}
+
+		public Integer getExecutionTime() {
+			return this.executionTime;
+		}
+
+	}
+
+}

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/LiquibaseEndpoint.java

@@ -0,0 +1,65 @@
+/*
+ * Copyright 2012-2015 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
+ *
+ *      http://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.boot.actuate.endpoint;
+
+import java.util.List;
+import java.util.Map;
+
+import javax.sql.DataSource;
+
+import liquibase.changelog.StandardChangeLogHistoryService;
+import liquibase.database.Database;
+import liquibase.database.DatabaseFactory;
+import liquibase.database.jvm.JdbcConnection;
+import liquibase.integration.spring.SpringLiquibase;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.util.Assert;
+
+/**
+ * {@link Endpoint} to expose liquibase info.
+ *
+ * @author Eddú Meléndez
+ * @since 1.3.0
+ */
+@ConfigurationProperties(prefix = "endpoints.liquibase", ignoreUnknownFields = true)
+public class LiquibaseEndpoint extends AbstractEndpoint<List<Map<String, ?>>> {
+
+	private final SpringLiquibase liquibase;
+
+	public LiquibaseEndpoint(SpringLiquibase liquibase) {
+		super("liquibase");
+		Assert.notNull(liquibase, "Liquibase must not be null");
+		this.liquibase = liquibase;
+	}
+
+	@Override
+	public List<Map<String, ?>> invoke() {
+		StandardChangeLogHistoryService service = new StandardChangeLogHistoryService();
+		try {
+			DatabaseFactory factory = DatabaseFactory.getInstance();
+			DataSource dataSource = this.liquibase.getDataSource();
+			JdbcConnection connection = new JdbcConnection(dataSource.getConnection());
+			Database database = factory.findCorrectDatabaseImplementation(connection);
+			return service.queryDatabaseChangeLogTable(database);
+		}
+		catch (Exception ex) {
+			throw new IllegalStateException("Unable to get Liquibase changelog", ex);
+		}
+	}
+
+}

spring-boot-actuator/src/test/java/org/springframework/boot/actuate/autoconfigure/EndpointAutoConfigurationTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2014 the original author or authors.
+ * Copyright 2012-2015 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.
@@ -26,8 +26,10 @@ import org.springframework.boot.actuate.endpoint.AutoConfigurationReportEndpoint
 import org.springframework.boot.actuate.endpoint.BeansEndpoint;
 import org.springframework.boot.actuate.endpoint.DumpEndpoint;
 import org.springframework.boot.actuate.endpoint.EnvironmentEndpoint;
+import org.springframework.boot.actuate.endpoint.FlywayEndpoint;
 import org.springframework.boot.actuate.endpoint.HealthEndpoint;
 import org.springframework.boot.actuate.endpoint.InfoEndpoint;
+import org.springframework.boot.actuate.endpoint.LiquibaseEndpoint;
 import org.springframework.boot.actuate.endpoint.MetricsEndpoint;
 import org.springframework.boot.actuate.endpoint.PublicMetrics;
 import org.springframework.boot.actuate.endpoint.RequestMappingEndpoint;
@@ -36,7 +38,9 @@ import org.springframework.boot.actuate.endpoint.TraceEndpoint;
 import org.springframework.boot.actuate.health.Health;
 import org.springframework.boot.actuate.metrics.Metric;
 import org.springframework.boot.autoconfigure.condition.ConditionEvaluationReport;
+import org.springframework.boot.autoconfigure.flyway.FlywayAutoConfiguration;
 import org.springframework.boot.autoconfigure.jdbc.EmbeddedDataSourceConfiguration;
+import org.springframework.boot.autoconfigure.liquibase.LiquibaseAutoConfiguration;
 import org.springframework.boot.test.EnvironmentTestUtils;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 import org.springframework.context.annotation.Bean;
@@ -55,6 +59,7 @@ import static org.junit.Assert.assertTrue;
  * @author Greg Turnquist
  * @author Christian Dupuis
  * @author Stephane Nicoll
+ * @author Eddú Meléndez
  */
 public class EndpointAutoConfigurationTests {
 
@@ -156,6 +161,28 @@ public class EndpointAutoConfigurationTests {
 		assertNull(endpoint.invoke().get("git"));
 	}
 
+	@Test
+	public void testFlywayEndpoint() {
+		this.context = new AnnotationConfigApplicationContext();
+		this.context.register(EmbeddedDataSourceConfiguration.class,
+				FlywayAutoConfiguration.class, EndpointAutoConfiguration.class);
+		this.context.refresh();
+		FlywayEndpoint endpoint = this.context.getBean(FlywayEndpoint.class);
+		assertNotNull(endpoint);
+		assertEquals(1, endpoint.invoke().size());
+	}
+
+	@Test
+	public void testLiquibaseEndpoint() {
+		this.context = new AnnotationConfigApplicationContext();
+		this.context.register(EmbeddedDataSourceConfiguration.class,
+				LiquibaseAutoConfiguration.class, EndpointAutoConfiguration.class);
+		this.context.refresh();
+		LiquibaseEndpoint endpoint = this.context.getBean(LiquibaseEndpoint.class);
+		assertNotNull(endpoint);
+		assertEquals(1, endpoint.invoke().size());
+	}
+
 	private void load(Class<?>... config) {
 		this.context = new AnnotationConfigApplicationContext();
 		this.context.register(config);

spring-boot-actuator/src/test/java/org/springframework/boot/actuate/endpoint/FlywayEndpointTests.java

@@ -0,0 +1,61 @@
+/*
+ * Copyright 2012-2015 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
+ *
+ *      http://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.boot.actuate.endpoint;
+
+import org.flywaydb.core.Flyway;
+import org.junit.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.autoconfigure.flyway.FlywayAutoConfiguration;
+import org.springframework.boot.autoconfigure.jdbc.EmbeddedDataSourceConfiguration;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+
+import static org.hamcrest.Matchers.is;
+import static org.junit.Assert.assertThat;
+
+/**
+ * Tests for {@link FlywayEndpoint}.
+ *
+ * @author Eddú Meléndez
+ */
+public class FlywayEndpointTests extends AbstractEndpointTests<FlywayEndpoint> {
+
+	public FlywayEndpointTests() {
+		super(Config.class, FlywayEndpoint.class, "flyway", true, "endpoints.flyway");
+	}
+
+	@Test
+	public void invoke() throws Exception {
+		assertThat(getEndpointBean().invoke().size(), is(1));
+	}
+
+	@Configuration
+	@Import({ EmbeddedDataSourceConfiguration.class, FlywayAutoConfiguration.class })
+	public static class Config {
+
+		@Autowired
+		private Flyway flyway;
+
+		@Bean
+		public FlywayEndpoint endpoint() {
+			return new FlywayEndpoint(this.flyway);
+		}
+
+	}
+
+}

spring-boot-actuator/src/test/java/org/springframework/boot/actuate/endpoint/LiquibaseEndpointTests.java

@@ -0,0 +1,63 @@
+/*
+ * Copyright 2012-2015 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
+ *
+ *      http://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.boot.actuate.endpoint;
+
+import liquibase.integration.spring.SpringLiquibase;
+
+import org.junit.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.autoconfigure.jdbc.EmbeddedDataSourceConfiguration;
+import org.springframework.boot.autoconfigure.liquibase.LiquibaseAutoConfiguration;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+
+import static org.hamcrest.Matchers.is;
+import static org.junit.Assert.assertThat;
+
+/**
+ * Tests for {@link LiquibaseEndpoint}.
+ *
+ * @author Eddú Meléndez
+ */
+public class LiquibaseEndpointTests extends AbstractEndpointTests<LiquibaseEndpoint> {
+
+	public LiquibaseEndpointTests() {
+		super(Config.class, LiquibaseEndpoint.class, "liquibase", true,
+				"endpoints.liquibase");
+	}
+
+	@Test
+	public void invoke() throws Exception {
+		assertThat(getEndpointBean().invoke().size(), is(1));
+	}
+
+	@Configuration
+	@Import({ EmbeddedDataSourceConfiguration.class, LiquibaseAutoConfiguration.class })
+	public static class Config {
+
+		@Autowired
+		private SpringLiquibase liquibase;
+
+		@Bean
+		public LiquibaseEndpoint endpoint() {
+			return new LiquibaseEndpoint(this.liquibase);
+		}
+
+	}
+
+}

spring-boot-actuator/src/test/resources/db/changelog/db.changelog-master.yaml

@@ -0,0 +1,20 @@
+databaseChangeLog:
+  - changeSet:
+      id: 1
+      author: marceloverdijk
+      changes:
+        - createTable:
+            tableName: customer
+            columns:
+              - column:
+                  name: id
+                  type: int
+                  autoIncrement: true
+                  constraints:
+                    primaryKey: true
+                    nullable: false
+              - column:
+                  name: name
+                  type: varchar(50)
+                  constraints:
+                    nullable: false