Support sending metrics to InfluxDB v2

See gh-25721

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/export/influx/InfluxProperties.java

@@ -16,10 +16,12 @@
 
 package org.springframework.boot.actuate.autoconfigure.metrics.export.influx;
 
+import io.micrometer.influx.InfluxApiVersion;
 import io.micrometer.influx.InfluxConsistency;
 
 import org.springframework.boot.actuate.autoconfigure.metrics.export.properties.StepRegistryProperties;
 import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.util.StringUtils;
 
 /**
  * {@link ConfigurationProperties @ConfigurationProperties} for configuring Influx metrics
@@ -33,7 +35,7 @@ import org.springframework.boot.context.properties.ConfigurationProperties;
 public class InfluxProperties extends StepRegistryProperties {
 
 	/**
-	 * Database to send metrics to.
+	 * Database to send metrics to when using an InfluxDB 1.x database.
 	 */
 	private String db = "mydb";
 
@@ -93,6 +95,29 @@ public class InfluxProperties extends StepRegistryProperties {
 	 */
 	private boolean autoCreateDb = true;
 
+	/**
+	 * API version of InfluxDB to use. Defaults to 'v1' unless an org is configured. If an
+	 * org is configured, defaults to 'v2'.
+	 */
+	private InfluxApiVersion apiVersion;
+
+	/**
+	 * InfluxDB v2 org to write metrics.
+	 */
+	private String org;
+
+	/**
+	 * InfluxDB v2 bucket for metrics. Use either the bucket name or ID. Defaults to the
+	 * value of the db property if not set.
+	 */
+	private String bucket;
+
+	/**
+	 * Authentication token to use with calls to the InfluxDB backend. For InfluxDB v1,
+	 * the Bearer scheme is used. For v2, the Token scheme is used.
+	 */
+	private String token;
+
 	public String getDb() {
 		return this.db;
 	}
@@ -181,4 +206,42 @@ public class InfluxProperties extends StepRegistryProperties {
 		this.autoCreateDb = autoCreateDb;
 	}
 
+	public InfluxApiVersion getApiVersion() {
+		if (this.apiVersion != null) {
+			return this.apiVersion;
+		}
+		return StringUtils.hasText(this.org) ? InfluxApiVersion.V2 : InfluxApiVersion.V1;
+	}
+
+	public void setApiVersion(InfluxApiVersion apiVersion) {
+		this.apiVersion = apiVersion;
+	}
+
+	public String getOrg() {
+		return this.org;
+	}
+
+	public void setOrg(String org) {
+		this.org = org;
+	}
+
+	public String getBucket() {
+		if (this.bucket != null) {
+			return this.bucket;
+		}
+		return this.db;
+	}
+
+	public void setBucket(String bucket) {
+		this.bucket = bucket;
+	}
+
+	public String getToken() {
+		return this.token;
+	}
+
+	public void setToken(String token) {
+		this.token = token;
+	}
+
 }

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/export/influx/InfluxPropertiesConfigAdapter.java

@@ -16,6 +16,7 @@
 
 package org.springframework.boot.actuate.autoconfigure.metrics.export.influx;
 
+import io.micrometer.influx.InfluxApiVersion;
 import io.micrometer.influx.InfluxConfig;
 import io.micrometer.influx.InfluxConsistency;
 
@@ -94,4 +95,24 @@ class InfluxPropertiesConfigAdapter extends StepRegistryPropertiesConfigAdapter<
 		return get(InfluxProperties::isAutoCreateDb, InfluxConfig.super::autoCreateDb);
 	}
 
+	@Override
+	public InfluxApiVersion apiVersion() {
+		return get(InfluxProperties::getApiVersion, InfluxConfig.super::apiVersion);
+	}
+
+	@Override
+	public String org() {
+		return get(InfluxProperties::getOrg, InfluxConfig.super::org);
+	}
+
+	@Override
+	public String bucket() {
+		return get(InfluxProperties::getBucket, InfluxConfig.super::bucket);
+	}
+
+	@Override
+	public String token() {
+		return get(InfluxProperties::getToken, InfluxConfig.super::token);
+	}
+
 }

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/export/influx/InfluxPropertiesTests.java

@@ -46,6 +46,10 @@ class InfluxPropertiesTests extends StepRegistryPropertiesTests {
 		assertThat(properties.getUri()).isEqualTo(config.uri());
 		assertThat(properties.isCompressed()).isEqualTo(config.compressed());
 		assertThat(properties.isAutoCreateDb()).isEqualTo(config.autoCreateDb());
+		assertThat(properties.getApiVersion()).isEqualTo(config.apiVersion());
+		assertThat(properties.getOrg()).isEqualTo(config.org());
+		assertThat(properties.getBucket()).isEqualTo(config.bucket());
+		assertThat(properties.getToken()).isEqualTo(config.token());
 	}
 
 }

spring-boot-project/spring-boot-docs/src/docs/asciidoc/production-ready-features.adoc

@@ -1833,7 +1833,8 @@ You should also configure one or more tags to identify the data source to which
 
 [[production-ready-metrics-export-influx]]
 ==== Influx
-By default, metrics are exported to {micrometer-registry-docs}/influx[Influx] running on your local machine.
+By default, metrics are exported to an {micrometer-registry-docs}/influx[Influx] v1 instance running on your local machine with the default configuration.
+To export metrics to InfluxDB v2, configure the `org`, `bucket`, and authentication `token` for writing metrics.
 The location of the https://www.influxdata.com[Influx server] to use can be provided using:
 
 [source,yaml,indent=0,configprops,configblocks]