be5fa04118
* Updates to latest Sampling infrastructure
Brave recently switched to an interface model for higher level sampling
like HTTP. So, `HttpSampler` -> `SamplingFunction<HttpRequest>`. Don't
worry because `HttpSampler` was retrofitted as a `SamplingFunction`.
This change moves to the higher interface, avoiding deprecated methods
and such. More interestingly, this weaves in support for `RpcTracing`,
which *finally* introduces RPC sampling the same way. Specifically, this
adds `SamplingFunction<RpcRequest>` under the same conventions as HTTP.
Most immediately, this can be used here in gRPC and Dubbo, as
autoconfiguration exists. It also works with any autoconfiguration that
isn't here, such as Armeria.
Ex. Here's a sampler that traces 100 "GetUserToken" requests per second. This
doesn't start new traces for requests to the health check service. Other
requests will use a global rate provided by the tracing component.
```java
import static brave.rpc.RpcRequestMatchers.methodEquals;
import static brave.rpc.RpcRequestMatchers.serviceEquals;
import static brave.sampler.Matchers.and;
--snip--
@Bean(name = ServerSampler.NAME)
SamplerFunction<RpcRequest> myRpcSampler() {
Matcher<RpcRequest> userAuth = and(
serviceEquals("users.UserService"),
methodEquals("GetUserToken")
);
return RpcRuleSampler.newBuilder()
.putRule(serviceEquals("grpc.health.v1.Health"), Sampler.NEVER_SAMPLE)
.putRule(userAuth, RateLimitingSampler.create(100)).build();
}
```
82 lines
2.6 KiB
XML
82 lines
2.6 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!--
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~ Copyright 2013-2018 the original author or authors.
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~
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~ Licensed under the Apache License, Version 2.0 (the "License");
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~ you may not use this file except in compliance with the License.
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~ You may obtain a copy of the License at
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~
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~ https://www.apache.org/licenses/LICENSE-2.0
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~
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~ Unless required by applicable law or agreed to in writing, software
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~ distributed under the License is distributed on an "AS IS" BASIS,
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~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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~ See the License for the specific language governing permissions and
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~ limitations under the License.
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-->
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<project xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance"
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xmlns="http://maven.apache.org/POM/4.0.0"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<artifactId>spring-cloud-sleuth-samples</artifactId>
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<packaging>pom</packaging>
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<name>Spring Cloud Sleuth Samples</name>
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<description>Spring Cloud Sleuth Samples</description>
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<parent>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-sleuth</artifactId>
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<version>2.2.0.BUILD-SNAPSHOT</version>
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<relativePath>..</relativePath>
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</parent>
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<modules>
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<module>spring-cloud-sleuth-sample</module>
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<module>spring-cloud-sleuth-sample-test-core</module>
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<module>spring-cloud-sleuth-sample-messaging</module>
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<module>spring-cloud-sleuth-sample-websocket</module>
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<module>spring-cloud-sleuth-sample-feign</module>
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<module>spring-cloud-sleuth-sample-ribbon</module>
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<module>spring-cloud-sleuth-sample-zipkin</module>
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</modules>
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<build>
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<pluginManagement>
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<plugins>
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<plugin>
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<!--skip deploy (this is just a test module) -->
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<artifactId>maven-deploy-plugin</artifactId>
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<configuration>
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<skip>true</skip>
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</configuration>
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</plugin>
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</plugins>
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</pluginManagement>
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</build>
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<dependencyManagement>
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<dependencies>
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-sleuth-dependencies</artifactId>
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<version>${project.version}</version>
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<type>pom</type>
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<scope>import</scope>
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</dependency>
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-sleuth-sample-test-core</artifactId>
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<version>${project.version}</version>
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</dependency>
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<dependency>
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<groupId>io.zipkin.zipkin2</groupId>
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<artifactId>zipkin</artifactId>
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<version>2.17.0</version>
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</dependency>
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</dependencies>
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</dependencyManagement>
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</project>
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