org.springframework.boot.actuate.autoconfigure.tracing.otlp.OtlpAutoConfiguration Maven / Gradle / Ivy
/*
* Copyright 2012-2023 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
*
* https://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.autoconfigure.tracing.otlp;
import io.micrometer.tracing.otel.bridge.OtelTracer;
import io.opentelemetry.api.OpenTelemetry;
import io.opentelemetry.exporter.otlp.http.trace.OtlpHttpSpanExporter;
import io.opentelemetry.exporter.otlp.trace.OtlpGrpcSpanExporter;
import io.opentelemetry.sdk.trace.SdkTracerProvider;
import org.springframework.boot.autoconfigure.AutoConfiguration;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Import;
/**
* {@link EnableAutoConfiguration Auto-configuration} for OTLP. Brave does not support
* OTLP, so we only configure it for OpenTelemetry. OTLP defines three transports that are
* supported: gRPC (/protobuf), HTTP/protobuf, HTTP/JSON. From these transports HTTP/JSON
* is not supported by the OTel Java SDK, and it seems there are no plans supporting it in
* the future, see: opentelemetry-java#3651.
* Because this class configures components from the OTel SDK, it can't support HTTP/JSON.
* To keep things simple, we only auto-configure HTTP/protobuf. If you want to use gRPC,
* define an {@link OtlpGrpcSpanExporter} and this auto-configuration will back off.
*
* @author Jonatan Ivanov
* @author Moritz Halbritter
* @author Eddú Meléndez
* @since 3.1.0
*/
@AutoConfiguration
@ConditionalOnClass({ OtelTracer.class, SdkTracerProvider.class, OpenTelemetry.class, OtlpHttpSpanExporter.class })
@EnableConfigurationProperties(OtlpProperties.class)
@Import({ OtlpTracingConfigurations.ConnectionDetails.class, OtlpTracingConfigurations.Exporters.class })
public class OtlpAutoConfiguration {
}