b1d39ce291
`SpanHandler` is the base type for the now deprecated `FinishedSpanHandler`.
Notable, it can not just handle things at the end of a recording, but also the
beginning.
For example, this permits set-once baggage without the HTTP abstraction:
```java
static final BaggageField EPOCH_SECONDS = BaggageField.create("epoch_seconds");
static final class RootOnlyBaggage extends SpanHandler {
@Override
public boolean begin(TraceContext context, MutableSpan span, @Nullable TraceContext parent) {
if (EPOCH_SECONDS.getValue(context) == null) { // only set at the first span
long epochSeconds = System.currentTimeMillis() / 1000;
EPOCH_SECONDS.updateValue(context, String.valueOf(epochSeconds));
}
return true;
}
@Override public boolean end(TraceContext context, MutableSpan span, Cause cause) {
Tags.BAGGAGE_FIELD.tag(EPOCH_SECONDS, context, span);
return true;
}
}
```
As the parent is available, it can also facilitate advanced tasks like counting
children, or summarizing entire local roots.
See https://github.com/openzipkin/brave/tree/master/brave/src/test/java/brave/features/handler
and https://github.com/openzipkin/brave/blob/master/brave/src/main/java/brave/handler/SpanHandler.java for more
143 lines
4.4 KiB
XML
143 lines
4.4 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="http://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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<parent>
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<artifactId>spring-cloud-dependencies-parent</artifactId>
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<groupId>org.springframework.cloud</groupId>
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<version>2.3.0.BUILD-SNAPSHOT</version>
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<relativePath/>
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</parent>
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<artifactId>spring-cloud-sleuth-dependencies</artifactId>
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<version>2.2.3.BUILD-SNAPSHOT</version>
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<packaging>pom</packaging>
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<name>spring-cloud-sleuth-dependencies</name>
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<description>Spring Cloud Sleuth Dependencies</description>
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<properties>
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<brave.version>5.12.0</brave.version>
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<brave.opentracing.version>0.37.0</brave.opentracing.version>
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<grpc.spring.boot.version>3.4.1</grpc.spring.boot.version>
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</properties>
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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-core</artifactId>
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<version>${project.version}</version>
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</dependency>
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-sleuth-zipkin</artifactId>
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<version>${project.version}</version>
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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-starter-zipkin</artifactId>
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<version>${project.version}</version>
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</dependency>
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-starter-sleuth</artifactId>
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<version>${project.version}</version>
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</dependency>
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<!-- BRAVE -->
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<dependency>
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<groupId>io.zipkin.brave</groupId>
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<artifactId>brave-bom</artifactId>
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<version>${brave.version}</version>
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<type>pom</type>
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<scope>import</scope>
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</dependency>
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<dependency>
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<groupId>io.opentracing.brave</groupId>
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<artifactId>brave-opentracing</artifactId>
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<version>${brave.opentracing.version}</version>
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<exclusions>
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<exclusion>
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<groupId>io.zipkin.brave</groupId>
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<artifactId>*</artifactId>
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</exclusion>
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</exclusions>
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</dependency>
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<!-- GRPC -->
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<dependency>
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<groupId>io.github.lognet</groupId>
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<artifactId>grpc-spring-boot-starter</artifactId>
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<version>${grpc.spring.boot.version}</version>
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</dependency>
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</dependencies>
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</dependencyManagement>
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<profiles>
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<profile>
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<id>spring</id>
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<repositories>
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<repository>
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<id>spring-snapshots</id>
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<name>Spring Snapshots</name>
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<url>https://repo.spring.io/libs-snapshot-local</url>
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<snapshots>
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<enabled>true</enabled>
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</snapshots>
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<releases>
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<enabled>false</enabled>
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</releases>
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</repository>
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<repository>
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<id>spring-milestones</id>
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<name>Spring Milestones</name>
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<url>https://repo.spring.io/libs-milestone-local</url>
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<snapshots>
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<enabled>false</enabled>
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</snapshots>
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</repository>
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<repository>
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<id>spring-releases</id>
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<name>Spring Releases</name>
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<url>https://repo.spring.io/release</url>
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<snapshots>
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<enabled>false</enabled>
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</snapshots>
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</repository>
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</repositories>
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<pluginRepositories>
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<pluginRepository>
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<id>spring-snapshots</id>
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<name>Spring Snapshots</name>
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<url>https://repo.spring.io/libs-snapshot-local</url>
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<snapshots>
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<enabled>true</enabled>
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</snapshots>
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<releases>
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<enabled>false</enabled>
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</releases>
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</pluginRepository>
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<pluginRepository>
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<id>spring-milestones</id>
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<name>Spring Milestones</name>
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<url>https://repo.spring.io/libs-milestone-local</url>
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<snapshots>
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<enabled>false</enabled>
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</snapshots>
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</pluginRepository>
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</pluginRepositories>
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</profile>
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</profiles>
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</project>
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