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Spring Cloud Sleuth AutoConfigure
/*
* Copyright 2013-2021 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.cloud.sleuth.autoconfig.brave.instrument.grpc;
import java.util.List;
import java.util.Optional;
import brave.Tracing;
import brave.grpc.GrpcTracing;
import brave.rpc.RpcTracing;
import io.grpc.ServerInterceptor;
import org.lognet.springboot.grpc.GRpcGlobalInterceptor;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.cloud.sleuth.autoconfig.brave.instrument.rpc.BraveRpcAutoConfiguration;
import org.springframework.cloud.sleuth.brave.instrument.grpc.GrpcManagedChannelBuilderCustomizer;
import org.springframework.cloud.sleuth.brave.instrument.grpc.SpringAwareManagedChannelBuilder;
import org.springframework.cloud.sleuth.brave.instrument.grpc.TracingManagedChannelBuilderCustomizer;
import org.springframework.context.annotation.Bean;
/**
* {@link org.springframework.boot.autoconfigure.EnableAutoConfiguration
* Auto-configuration} enables span information propagation when using GRPC.
*
* This configuration is only enabled when both grpc-spring-boot-starter and
* brave-instrumentation-grpc are on the classpath.
*
* @author Tyler Van Gorder
*/
@ConditionalOnClass({ GrpcTracing.class, GRpcGlobalInterceptor.class })
@ConditionalOnProperty(value = "spring.sleuth.grpc.enabled", matchIfMissing = true)
@ConditionalOnBean({ Tracing.class, RpcTracing.class })
@AutoConfigureAfter(BraveRpcAutoConfiguration.class)
public class BraveGrpcAutoConfiguration {
@Bean
GrpcTracing grpcTracing(RpcTracing rpcTracing) {
return GrpcTracing.create(rpcTracing);
}
// Register a global interceptor for both the server
@Bean
@GRpcGlobalInterceptor
ServerInterceptor grpcServerBraveInterceptor(GrpcTracing grpcTracing) {
return grpcTracing.newServerInterceptor();
}
// This is wrapper around gRPC's managed channel builder that is spring-aware
@Bean
@ConditionalOnMissingBean(SpringAwareManagedChannelBuilder.class)
SpringAwareManagedChannelBuilder managedChannelBuilder(
Optional> customizers) {
return new SpringAwareManagedChannelBuilder(customizers);
}
@Bean
GrpcManagedChannelBuilderCustomizer tracingManagedChannelBuilderCustomizer(GrpcTracing grpcTracing) {
return new TracingManagedChannelBuilderCustomizer(grpcTracing);
}
}