Merge pull request #9066 from kuptservol:influxdb-autoconfiguration

* pr/9066:
  Polish "Add influxDB java client auto-configuration"
  Add influxDB java client auto-configuration

Author: snicoll

spring-boot-autoconfigure/pom.xml

@@ -641,6 +641,11 @@
 			<artifactId>aspectjweaver</artifactId>
 			<optional>true</optional>
 		</dependency>
+		<dependency>
+			<groupId>org.influxdb</groupId>
+			<artifactId>influxdb-java</artifactId>
+			<optional>true</optional>
+		</dependency>
 		<dependency>
 			<groupId>org.jooq</groupId>
 			<artifactId>jooq</artifactId>

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/influx/InfluxDbAutoConfiguration.java

@@ -0,0 +1,63 @@
+/*
+ * Copyright 2012-2017 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.influx;
+
+import com.google.common.base.Strings;
+import org.influxdb.InfluxDB;
+import org.influxdb.InfluxDBFactory;
+
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+/**
+ * {@link EnableAutoConfiguration Auto-configuration} for InfluxDB.
+ *
+ * @author Sergey Kuptsov
+ * @author Stephane Nicoll
+ * @since 2.0.0
+ */
+@Configuration
+@ConditionalOnClass(InfluxDB.class)
+@EnableConfigurationProperties(InfluxDbProperties.class)
+public class InfluxDbAutoConfiguration {
+
+	private final InfluxDbProperties properties;
+
+	public InfluxDbAutoConfiguration(InfluxDbProperties properties) {
+		this.properties = properties;
+	}
+
+	@Bean
+	@ConditionalOnMissingBean
+	@ConditionalOnProperty("spring.influx.client.url")
+	public InfluxDB influxDb() {
+		InfluxDbProperties.Client client = this.properties.getClient();
+		if (Strings.isNullOrEmpty(client.getUser())) {
+			return InfluxDBFactory.connect(client.getUrl());
+		}
+		else {
+			return InfluxDBFactory.connect(client.getUrl(), client.getUser(),
+					client.getPassword());
+		}
+	}
+
+}

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/influx/InfluxDbProperties.java

@@ -0,0 +1,80 @@
+/*
+ * Copyright 2012-2017 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.influx;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+/**
+ * Configuration properties for InfluxDB.
+ *
+ * @author Sergey Kuptsov
+ * @author Stephane Nicoll
+ * @since 2.0.0
+ */
+@ConfigurationProperties(prefix = "spring.influx")
+public class InfluxDbProperties {
+
+	private final Client client = new Client();
+
+	public Client getClient() {
+		return this.client;
+	}
+
+	public static class Client {
+
+		/**
+		 * Url of the InfluxDB instance to connect to.
+		 */
+		private String url;
+
+		/**
+		 * Login user.
+		 */
+		private String user;
+
+		/**
+		 * Login password.
+		 */
+		private String password;
+
+		public String getUrl() {
+			return this.url;
+		}
+
+		public void setUrl(String url) {
+			this.url = url;
+		}
+
+		public String getUser() {
+			return this.user;
+		}
+
+		public void setUser(String user) {
+			this.user = user;
+		}
+
+		public String getPassword() {
+			return this.password;
+		}
+
+		public void setPassword(String password) {
+			this.password = password;
+		}
+
+	}
+
+}

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/influx/package-info.java

@@ -0,0 +1,20 @@
+/*
+ * 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.
+ */
+
+/**
+ * Auto-configuration for InfluxDB.
+ */
+package org.springframework.boot.autoconfigure.influx;

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

@@ -62,6 +62,7 @@ org.springframework.boot.autoconfigure.hateoas.HypermediaAutoConfiguration,\
 org.springframework.boot.autoconfigure.hazelcast.HazelcastAutoConfiguration,\
 org.springframework.boot.autoconfigure.hazelcast.HazelcastJpaDependencyAutoConfiguration,\
 org.springframework.boot.autoconfigure.http.HttpMessageConvertersAutoConfiguration,\
+org.springframework.boot.autoconfigure.influx.InfluxDbAutoConfiguration,\
 org.springframework.boot.autoconfigure.info.ProjectInfoAutoConfiguration,\
 org.springframework.boot.autoconfigure.integration.IntegrationAutoConfiguration,\
 org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration,\

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/influx/InfluxDbAutoConfigurationTest.java

@@ -0,0 +1,73 @@
+/*
+ * Copyright 2012-2017 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.influx;
+
+import org.influxdb.InfluxDB;
+import org.junit.After;
+import org.junit.Test;
+
+import org.springframework.boot.test.util.TestPropertyValues;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link InfluxDbAutoConfiguration}.
+ *
+ * @author Sergey Kuptsov
+ * @author Stephane Nicoll
+ */
+public class InfluxDbAutoConfigurationTest {
+
+	private AnnotationConfigApplicationContext context;
+
+	@After
+	public void tearDown() {
+		if (this.context != null) {
+			this.context.close();
+		}
+	}
+
+	@Test
+	public void clientRequiresUrl() {
+		load();
+		assertThat(this.context.getBeansOfType(InfluxDB.class)).isEmpty();
+	}
+
+	@Test
+	public void clientCanBeCustomized() {
+		load("spring.influx.client.url=http://localhost",
+				"spring.influx.client.password:password",
+				"spring.influx.client.user:user");
+		assertThat(this.context.getBeansOfType(InfluxDB.class)).hasSize(1);
+	}
+
+	@Test
+	public void clientCanBeCreatedWithoutCredentials() {
+		load("spring.influx.client.url=http://localhost");
+		assertThat(this.context.getBeansOfType(InfluxDB.class)).hasSize(1);
+	}
+
+	private void load(String... environment) {
+		AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext();
+		TestPropertyValues.of(environment).applyTo(ctx);
+		ctx.register(InfluxDbAutoConfiguration.class);
+		ctx.refresh();
+		this.context = ctx;
+	}
+
+}

spring-boot-dependencies/pom.xml

@@ -93,6 +93,7 @@
 		<httpclient.version>4.5.3</httpclient.version>
 		<httpcore.version>4.4.6</httpcore.version>
 		<infinispan.version>8.2.6.Final</infinispan.version>
+		<influxdb-java.version>2.5</influxdb-java.version>
 		<jackson.version>2.9.0.pr3</jackson.version>
 		<janino.version>3.0.7</janino.version>
 		<javassist.version>3.21.0-GA</javassist.version> <!-- Same as Hibernate -->
@@ -1856,6 +1857,11 @@
 					</exclusion>
 				</exclusions>
 			</dependency>
+			<dependency>
+				<groupId>org.influxdb</groupId>
+				<artifactId>influxdb-java</artifactId>
+				<version>${influxdb-java.version}</version>
+			</dependency>
 			<dependency>
 				<groupId>org.javassist</groupId>
 				<artifactId>javassist</artifactId>

spring-boot-docs/src/main/asciidoc/appendix-application-properties.adoc

@@ -714,6 +714,11 @@ content into your application; rather pick only the properties that you need.
 	spring.h2.console.settings.trace=false # Enable trace output.
 	spring.h2.console.settings.web-allow-others=false # Enable remote access.
 
+	# InfluxDB ({sc-spring-boot-autoconfigure}/influx/InfluxProperties.{sc-ext}[InfluxProperties])
+	spring.influx.client.password= # Login password.
+	spring.influx.client.url= # Url of the InfluxDB instance to connect to.
+	spring.influx.client.user= # Login user.
+
 	# JOOQ ({sc-spring-boot-autoconfigure}/jooq/JooqAutoConfiguration.{sc-ext}[JooqAutoConfiguration])
 	spring.jooq.sql-dialect= # Sql dialect to use, auto-detected by default.