Perform analysis of failures caused by DataSourceBeanCreationException

Closes gh-5351

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/jdbc/DataSourceBeanCreationFailureAnalyzer.java

@@ -0,0 +1,42 @@
+/*
+ * Copyright 2012-2016 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.autoconfigure.jdbc;
+
+import org.springframework.boot.autoconfigure.jdbc.DataSourceProperties.DataSourceBeanCreationException;
+import org.springframework.boot.diagnostics.AbstractFailureAnalyzer;
+import org.springframework.boot.diagnostics.FailureAnalysis;
+
+/**
+ * An {@link AbstractFailureAnalyzer} for failures caused by a
+ * {@link DataSourceBeanCreationException}.
+ *
+ * @author Andy Wilkinson
+ */
+class DataSourceBeanCreationFailureAnalyzer
+		extends AbstractFailureAnalyzer<DataSourceBeanCreationException> {
+
+	@Override
+	protected FailureAnalysis analyze(Throwable rootFailure,
+			DataSourceBeanCreationException cause) {
+		String description = cause.getMessage()
+				.substring(0, cause.getMessage().indexOf(".")).trim();
+		String action = cause.getMessage().substring(cause.getMessage().indexOf(".") + 1)
+				.trim();
+		return new FailureAnalysis(description, action, cause);
+	}
+
+}

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/jdbc/DataSourceProperties.java

@@ -415,7 +415,7 @@ public class DataSourceProperties
 
 	}
 
-	private static class DataSourceBeanCreationException extends BeanCreationException {
+	static class DataSourceBeanCreationException extends BeanCreationException {
 
 		DataSourceBeanCreationException(EmbeddedDatabaseConnection connection,
 				Environment environment, String property) {

spring-boot-autoconfigure/src/main/resources/META-INF/spring.factories

@@ -99,6 +99,10 @@ org.springframework.boot.autoconfigure.websocket.WebSocketAutoConfiguration,\
 org.springframework.boot.autoconfigure.websocket.WebSocketMessagingAutoConfiguration,\
 org.springframework.boot.autoconfigure.webservices.WebServicesAutoConfiguration
 
+# Failure analyzers
+org.springframework.boot.diagnostics.FailureAnalyzer=\
+org.springframework.boot.autoconfigure.jdbc.DataSourceBeanCreationFailureAnalyzer
+
 # Template availability providers
 org.springframework.boot.autoconfigure.template.TemplateAvailabilityProvider=\
 org.springframework.boot.autoconfigure.freemarker.FreeMarkerTemplateAvailabilityProvider,\

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/jdbc/DataSourceBeanCreationFailureAnalyzerTests.java

@@ -0,0 +1,74 @@
+/*
+ * Copyright 2012-2016 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.autoconfigure.jdbc;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import org.springframework.beans.factory.BeanCreationException;
+import org.springframework.boot.autoconfigure.ImportAutoConfiguration;
+import org.springframework.boot.diagnostics.FailureAnalysis;
+import org.springframework.boot.testutil.ClassPathExclusions;
+import org.springframework.boot.testutil.FilteredClassPathRunner;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.context.annotation.Configuration;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link DataSourceBeanCreationFailureAnalyzer}.
+ *
+ * @author Andy Wilkinson
+ */
+@RunWith(FilteredClassPathRunner.class)
+@ClassPathExclusions({ "h2-*.jar", "hsqldb-*.jar" })
+public class DataSourceBeanCreationFailureAnalyzerTests {
+
+	@Test
+	public void failureAnalysisIsPerformed() {
+		FailureAnalysis failureAnalysis = performAnalysis(TestConfiguration.class);
+		assertThat(failureAnalysis.getDescription()).isEqualTo(
+				"Cannot determine embedded database driver class for database type NONE");
+		assertThat(failureAnalysis.getAction()).isEqualTo("If you want an embedded "
+				+ "database please put a supported one on the classpath. If you have "
+				+ "database settings to be loaded from a particular profile you may "
+				+ "need to active it (no profiles are currently active).");
+	}
+
+	private FailureAnalysis performAnalysis(Class<?> configuration) {
+		BeanCreationException failure = createFailure(configuration);
+		assertThat(failure).isNotNull();
+		return new DataSourceBeanCreationFailureAnalyzer().analyze(failure);
+	}
+
+	private BeanCreationException createFailure(Class<?> configuration) {
+		try {
+			new AnnotationConfigApplicationContext(configuration).close();
+			return null;
+		}
+		catch (BeanCreationException ex) {
+			return ex;
+		}
+	}
+
+	@Configuration
+	@ImportAutoConfiguration(DataSourceAutoConfiguration.class)
+	static class TestConfiguration {
+
+	}
+
+}