Revisit InfluxDB configuration structure

This commit removes the `client` namespace for InfluxDB as the
component that is created is `InfluxDB`, not `InfluxDBClient` or
something.

This aligns with all the other url/user/password properties Spring
Boot provides already

See gh-9066

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

@@ -48,14 +48,13 @@ public class InfluxDbAutoConfiguration {
 
 	@Bean
 	@ConditionalOnMissingBean
-	@ConditionalOnProperty("spring.influx.client.url")
+	@ConditionalOnProperty("spring.influx.url")
 	public InfluxDB influxDb() {
-		InfluxDbProperties.Client client = this.properties.getClient();
-		if (Strings.isNullOrEmpty(client.getUser())) {
-			return InfluxDBFactory.connect(client.getUrl());
+		if (Strings.isNullOrEmpty(this.properties.getUser())) {
+			return InfluxDBFactory.connect(this.properties.getUrl());
 		}
-		return InfluxDBFactory.connect(client.getUrl(), client.getUser(),
-				client.getPassword());
+		return InfluxDBFactory.connect(this.properties.getUrl(), this.properties.getUser(),
+				this.properties.getPassword());
 	}
 
 }

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

@@ -28,53 +28,43 @@ import org.springframework.boot.context.properties.ConfigurationProperties;
 @ConfigurationProperties(prefix = "spring.influx")
 public class InfluxDbProperties {
 
-	private final Client client = new Client();
-
-	public Client getClient() {
-		return this.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 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 setUrl(String url) {
+		this.url = url;
+	}
 
-		public void setUser(String user) {
-			this.user = user;
-		}
+	public String getUser() {
+		return this.user;
+	}
 
-		public String getPassword() {
-			return this.password;
-		}
+	public void setUser(String user) {
+		this.user = user;
+	}
 
-		public void setPassword(String password) {
-			this.password = password;
-		}
+	public String getPassword() {
+		return this.password;
+	}
 
+	public void setPassword(String password) {
+		this.password = password;
 	}
 
 }

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

@@ -43,22 +43,22 @@ public class InfluxDbAutoConfigurationTests {
 	}
 
 	@Test
-	public void clientRequiresUrl() {
+	public void influxDbRequiresUrl() {
 		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");
+	public void influxDbCanBeCustomized() {
+		load("spring.influx.url=http://localhost",
+				"spring.influx.password:password",
+				"spring.influx.user:user");
 		assertThat(this.context.getBeansOfType(InfluxDB.class)).hasSize(1);
 	}
 
 	@Test
-	public void clientCanBeCreatedWithoutCredentials() {
-		load("spring.influx.client.url=http://localhost");
+	public void influxDbCanBeCreatedWithoutCredentials() {
+		load("spring.influx.url=http://localhost");
 		assertThat(this.context.getBeansOfType(InfluxDB.class)).hasSize(1);
 	}
 

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

@@ -715,9 +715,9 @@ content into your application; rather pick only the properties that you need.
 	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.
+	spring.influx.password= # Login password.
+	spring.influx.url= # Url of the InfluxDB instance to connect to.
+	spring.influx.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.