mirror of https://github.com/apache/druid.git
OpenTelemetry emitter extension (#12015)
* Add OpenTelemetry emitter extension * Fix build * Fix checkstyle * Add used undeclared dependencies * Ignore unused declared dependencies
This commit is contained in:
Ivan Vankovich
GitHub
parent
e0c4c568cb
commit
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<argument>org.apache.druid.extensions.contrib:gce-extensions</argument>
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<argument>org.apache.druid.extensions.contrib:gce-extensions</argument>
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<argument>-c</argument>
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<argument>-c</argument>
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<argument>org.apache.druid.extensions.contrib:aliyun-oss-extensions</argument>
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<argument>org.apache.druid.extensions.contrib:aliyun-oss-extensions</argument>
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<argument>-c</argument>
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<argument>org.apache.druid.extensions.contrib:opentelemetry-emitter</argument>
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</arguments>
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</arguments>
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</configuration>
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</configuration>
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</execution>
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</execution>
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<!--
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~ Licensed to the Apache Software Foundation (ASF) under one
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~ or more contributor license agreements. See the NOTICE file
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~ distributed with this work for additional information
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~ regarding copyright ownership. The ASF licenses this file
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~ to you under the Apache License, Version 2.0 (the
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~ "License"); you may not use this file except in compliance
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~ with the License. You may obtain a copy of the License at
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~
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~ http://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,
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~ software distributed under the License is distributed on an
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~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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~ KIND, either express or implied. See the License for the
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~ specific language governing permissions and limitations
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~ under the License.
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-->
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# OpenTelemetry Emitter
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The [OpenTelemetry](https://opentelemetry.io/) emitter generates OpenTelemetry Spans for queries.
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## How OpenTelemetry emitter works
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The [OpenTelemetry](https://opentelemetry.io/) emitter processes `ServiceMetricEvent` events for the `query/time`
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metric. It extracts OpenTelemetry context from
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the [query context](https://druid.apache.org/docs/latest/querying/query-context.html). To link druid spans to parent
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traces, the query context should contain at least `traceparent` key.
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See [context propagation](https://www.w3.org/TR/trace-context/) for more information. If no `traceparent` key is
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provided, then spans are created without `parentTraceId` and are not linked to the parent span. In addition, the emitter
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also adds other druid context entries to the span attributes.
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## Configuration
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### Enabling
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To enable the OpenTelemetry emitter, add the extension and enable the emitter in `common.runtime.properties`.
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Load the plugin:
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```
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druid.extensions.loadList=[..., "opentelemetry-emitter"]
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```
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Then there are 2 options:
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* You want to use only `opentelemetry-emitter`
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```
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druid.emitter=opentelemetry
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```
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* You want to use `opentelemetry-emitter` with other emitters
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```
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druid.emitter=composing
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druid.emitter.composing.emitters=[..., "opentelemetry"]
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```
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_*More about Druid configuration [here](https://druid.apache.org/docs/latest/configuration/index.html)._
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## Testing
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### Part 1: Run zipkin and otel-collector
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Create `docker-compose.yaml` in your working dir:
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```
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version: "2"
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services:
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zipkin-all-in-one:
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image: openzipkin/zipkin:latest
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ports:
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- "9411:9411"
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otel-collector:
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image: otel/opentelemetry-collector:latest
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command: ["--config=otel-local-config.yaml", "${OTELCOL_ARGS}"]
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volumes:
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- ${PWD}/config.yaml:/otel-local-config.yaml
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ports:
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- "4317:4317"
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```
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Create `config.yaml` file with configuration for otel-collector:
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```
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version: "2"
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receivers:
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receivers:
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otlp:
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protocols:
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grpc:
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exporters:
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zipkin:
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endpoint: "http://zipkin-all-in-one:9411/api/v2/spans"
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format: proto
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logging:
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processors:
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batch:
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service:
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pipelines:
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traces:
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receivers: [otlp]
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processors: [batch]
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exporters: [logging, zipkin]
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```
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*_How to configure otel-collector you can read [here](https://opentelemetry.io/docs/collector/configuration/)._
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Run otel-collector and zipkin.
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```
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docker-compose up
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```
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### Part 2: Run Druid
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Build Druid:
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```
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mvn clean install -Pdist
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tar -C /tmp -xf distribution/target/apache-druid-0.21.0-bin.tar.gz
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cd /tmp/apache-druid-0.21.0
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```
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Edit `conf/druid/single-server/micro-quickstart/_common/common.runtime.properties` to enable the emitter (
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see `Configuration` section above).
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Start the quickstart with the apppropriate environment variables for opentelemetry autoconfiguration:
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```
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OTEL_SERVICE_NAME="org.apache.druid" OTEL_EXPORTER_OTLP_ENDPOINT="http://localhost:4317" bin/start-micro-quickstart
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```
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*_More about opentelemetry
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autoconfiguration [here](https://github.com/open-telemetry/opentelemetry-java/tree/main/sdk-extensions/autoconfigure)_
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Load sample data - [example](https://druid.apache.org/docs/latest/tutorials/index.html#step-4-load-data).
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### Part 3: Send queries
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Create `query.json`:
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```
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{
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"query":"SELECT COUNT(*) as total FROM wiki WHERE countryName IS NOT NULL",
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"context":{
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"traceparent":"00-54ef39243e3feb12072e0f8a74c1d55a-ad6d5b581d7c29c1-01"
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}
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}
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```
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Send query:
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```
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curl -XPOST -H'Content-Type: application/json' http://localhost:8888/druid/v2/sql/ -d @query.json
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```
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Then open `http://localhost:9411/zipkin/` and you can see there your spans.
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@ -0,0 +1,217 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<!--
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~ Licensed to the Apache Software Foundation (ASF) under one
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~ or more contributor license agreements. See the NOTICE file
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~ distributed with this work for additional information
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~ regarding copyright ownership. The ASF licenses this file
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~ to you under the Apache License, Version 2.0 (the
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~ "License"); you may not use this file except in compliance
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~ with the License. You may obtain a copy of the License at
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~
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~ http://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,
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~ software distributed under the License is distributed on an
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~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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~ KIND, either express or implied. See the License for the
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~ specific language governing permissions and limitations
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~ under the License.
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-->
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<parent>
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<groupId>org.apache.druid</groupId>
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<artifactId>druid</artifactId>
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<version>0.23.0-SNAPSHOT</version>
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<relativePath>../../pom.xml</relativePath>
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</parent>
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<modelVersion>4.0.0</modelVersion>
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<groupId>org.apache.druid.extensions.contrib</groupId>
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<artifactId>opentelemetry-emitter</artifactId>
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<name>opentelemetry-emitter</name>
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<description>Extension support for emitting OpenTelemetry spans for Druid queries</description>
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<properties>
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<opentelemetry.version>1.7.0</opentelemetry.version>
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<opentelemetry.instrumentation.version>1.7.0-alpha</opentelemetry.instrumentation.version>
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<!-- These guava and grpc versions are used only in the opentelemetry-extension.
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Look at build section for more details about shading. -->
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<shade.guava.version>30.1.1-jre</shade.guava.version>
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<shade.grpc.version>1.41.0</shade.grpc.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>io.opentelemetry</groupId>
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<artifactId>opentelemetry-bom</artifactId>
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<version>${opentelemetry.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.opentelemetry</groupId>
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<artifactId>opentelemetry-bom-alpha</artifactId>
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<version>${opentelemetry.version}-alpha</version>
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<type>pom</type>
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<scope>import</scope>
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</dependency>
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<dependency>
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<groupId>io.opentelemetry.instrumentation</groupId>
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<artifactId>opentelemetry-instrumentation-bom-alpha</artifactId>
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<version>${opentelemetry.instrumentation.version}</version>
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<type>pom</type>
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<scope>compile</scope>
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</dependency>
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</dependencies>
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</dependencyManagement>
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<dependencies>
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<dependency>
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<groupId>org.apache.druid</groupId>
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<artifactId>druid-core</artifactId>
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<version>${project.parent.version}</version>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>io.opentelemetry</groupId>
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<artifactId>opentelemetry-context</artifactId>
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</dependency>
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<dependency>
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<groupId>io.opentelemetry</groupId>
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<artifactId>opentelemetry-api</artifactId>
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</dependency>
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<dependency>
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<groupId>io.opentelemetry</groupId>
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<artifactId>opentelemetry-sdk</artifactId>
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</dependency>
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<dependency>
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<groupId>io.opentelemetry</groupId>
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<artifactId>opentelemetry-sdk-trace</artifactId>
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</dependency>
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<dependency>
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<groupId>io.opentelemetry</groupId>
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<artifactId>opentelemetry-sdk-common</artifactId>
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</dependency>
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<!-- OpenTelemetry extension bundles the OpenTelemetry auto-instrumentation,
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So it could potentially affect performance -->
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<dependency>
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<groupId>io.opentelemetry</groupId>
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<artifactId>opentelemetry-sdk-extension-autoconfigure</artifactId>
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</dependency>
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<dependency>
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<groupId>io.grpc</groupId>
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<artifactId>grpc-netty-shaded</artifactId>
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<version>${shade.grpc.version}</version>
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</dependency>
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<dependency>
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<groupId>com.google.code.findbugs</groupId>
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<artifactId>jsr305</artifactId>
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</dependency>
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<dependency>
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<groupId>com.google.inject</groupId>
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<artifactId>guice</artifactId>
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</dependency>
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<dependency>
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<groupId>com.google.guava</groupId>
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<artifactId>guava</artifactId>
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<version>${shade.guava.version}</version>
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</dependency>
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<!-- explicitly include perfmark dependency of grpc we exclude from the shaded jar
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Note: we could use promoteTransitiveDependencies=true in the shade plugin, but that promotes all
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transitive dependencies as well, which unnecessarily pollutes the final pom -->
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<dependency>
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<groupId>io.perfmark</groupId>
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<artifactId>perfmark-api</artifactId>
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<version>0.23.0</version>
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<scope>runtime</scope>
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</dependency>
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<dependency>
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<groupId>joda-time</groupId>
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<artifactId>joda-time</artifactId>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>com.fasterxml.jackson.core</groupId>
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<artifactId>jackson-databind</artifactId>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>com.fasterxml.jackson.core</groupId>
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<artifactId>jackson-core</artifactId>
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<scope>provided</scope>
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</dependency>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>pl.pragmatists</groupId>
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<artifactId>JUnitParams</artifactId>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-dependency-plugin</artifactId>
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<configuration>
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<ignoredUnusedDeclaredDependencies>
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<!-- Transitive dependencies from opentelemetry but explicitly added to be shadowed -->
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<ignoredUnusedDeclaredDependency>io.grpc:grpc-netty-shaded</ignoredUnusedDeclaredDependency>
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<ignoredUnusedDeclaredDependency>com.google.guava:guava</ignoredUnusedDeclaredDependency>
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</ignoredUnusedDeclaredDependencies>
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</configuration>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-shade-plugin</artifactId>
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<executions>
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<execution>
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<id>opentelemetry-extension</id>
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<phase>package</phase>
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<goals>
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<goal>shade</goal>
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</goals>
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<configuration>
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<transformers>
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<!-- grpc stores service providers in META-INF/services/* files,
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so we need to relocate the class names of the implementation classes.
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More about SPI - https://docs.oracle.com/javase/tutorial/ext/basics/spi.html.
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https://maven.apache.org/plugins/maven-shade-plugin/examples/resource-transformers.html. -->
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<transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
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</transformers>
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<artifactSet>
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<includes>
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<include>io.opentelemetry</include>
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<include>io.grpc</include>
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<include>com.google.guava</include>
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</includes>
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</artifactSet>
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<relocations>
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<relocation>
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<pattern>com.google.common</pattern>
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<shadedPattern>org.apache.druid.opentelemetry.shaded.com.google.common</shadedPattern>
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</relocation>
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<relocation>
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|
<pattern>io.grpc</pattern>
|
||||||
|
<shadedPattern>org.apache.druid.opentelemetry.shaded.io.grpc</shadedPattern>
|
||||||
|
<includes>
|
||||||
|
<include>io.grpc.*</include>
|
||||||
|
</includes>
|
||||||
|
</relocation>
|
||||||
|
<relocation>
|
||||||
|
<pattern>io.opentelemetry</pattern>
|
||||||
|
<shadedPattern>org.apache.druid.opentelemetry.shaded.io.opentelemetry</shadedPattern>
|
||||||
|
</relocation>
|
||||||
|
</relocations>
|
||||||
|
</configuration>
|
||||||
|
</execution>
|
||||||
|
</executions>
|
||||||
|
</plugin>
|
||||||
|
</plugins>
|
||||||
|
</build>
|
||||||
|
</project>
|
||||||
|
|
@ -0,0 +1,61 @@
|
||||||
|
/*
|
||||||
|
* Licensed to the Apache Software Foundation (ASF) under one
|
||||||
|
* or more contributor license agreements. See the NOTICE file
|
||||||
|
* distributed with this work for additional information
|
||||||
|
* regarding copyright ownership. The ASF licenses this file
|
||||||
|
* to you 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
|
||||||
|
*
|
||||||
|
* http://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.apache.druid.emitter.opentelemetry;
|
||||||
|
|
||||||
|
import io.opentelemetry.context.propagation.TextMapGetter;
|
||||||
|
import org.apache.druid.java.util.emitter.service.ServiceMetricEvent;
|
||||||
|
|
||||||
|
import javax.annotation.Nullable;
|
||||||
|
import java.util.Collections;
|
||||||
|
import java.util.Map;
|
||||||
|
import java.util.Objects;
|
||||||
|
import java.util.Optional;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Implementation of a text-based approach to read the W3C Trace Context from the metric query context.
|
||||||
|
* <a href="https://opentelemetry.io/docs/java/manual_instrumentation/#context-propagation">Context propagation</a>
|
||||||
|
* <a href="https://www.w3.org/TR/trace-context/">W3C Trace Context</a>
|
||||||
|
*/
|
||||||
|
public class DruidContextTextMapGetter implements TextMapGetter<ServiceMetricEvent>
|
||||||
|
{
|
||||||
|
|
||||||
|
@SuppressWarnings("unchecked")
|
||||||
|
private Map<String, Object> getContext(ServiceMetricEvent event)
|
||||||
|
{
|
||||||
|
Object context = event.getUserDims().get("context");
|
||||||
|
if (context instanceof Map) {
|
||||||
|
return (Map<String, Object>) context;
|
||||||
|
}
|
||||||
|
return Collections.emptyMap();
|
||||||
|
}
|
||||||
|
|
||||||
|
@Nullable
|
||||||
|
@Override
|
||||||
|
public String get(ServiceMetricEvent event, String key)
|
||||||
|
{
|
||||||
|
return Optional.ofNullable(getContext(event).get(key)).map(Objects::toString).orElse(null);
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public Iterable<String> keys(ServiceMetricEvent event)
|
||||||
|
{
|
||||||
|
return getContext(event).keySet();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,130 @@
|
||||||
|
/*
|
||||||
|
* Licensed to the Apache Software Foundation (ASF) under one
|
||||||
|
* or more contributor license agreements. See the NOTICE file
|
||||||
|
* distributed with this work for additional information
|
||||||
|
* regarding copyright ownership. The ASF licenses this file
|
||||||
|
* to you 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
|
||||||
|
*
|
||||||
|
* http://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.apache.druid.emitter.opentelemetry;
|
||||||
|
|
||||||
|
import io.opentelemetry.api.OpenTelemetry;
|
||||||
|
import io.opentelemetry.api.trace.Span;
|
||||||
|
import io.opentelemetry.api.trace.StatusCode;
|
||||||
|
import io.opentelemetry.api.trace.Tracer;
|
||||||
|
import io.opentelemetry.context.Context;
|
||||||
|
import io.opentelemetry.context.Scope;
|
||||||
|
import io.opentelemetry.context.propagation.TextMapPropagator;
|
||||||
|
import org.apache.druid.java.util.common.logger.Logger;
|
||||||
|
import org.apache.druid.java.util.emitter.core.Emitter;
|
||||||
|
import org.apache.druid.java.util.emitter.core.Event;
|
||||||
|
import org.apache.druid.java.util.emitter.service.ServiceMetricEvent;
|
||||||
|
import org.joda.time.DateTime;
|
||||||
|
|
||||||
|
import java.util.Arrays;
|
||||||
|
import java.util.Collections;
|
||||||
|
import java.util.HashSet;
|
||||||
|
import java.util.Map;
|
||||||
|
import java.util.concurrent.TimeUnit;
|
||||||
|
|
||||||
|
public class OpenTelemetryEmitter implements Emitter
|
||||||
|
{
|
||||||
|
static final DruidContextTextMapGetter DRUID_CONTEXT_TEXT_MAP_GETTER = new DruidContextTextMapGetter();
|
||||||
|
static final HashSet<String> TRACEPARENT_PROPAGATION_FIELDS = new HashSet<>(Arrays.asList(
|
||||||
|
"traceparent",
|
||||||
|
"tracestate"
|
||||||
|
));
|
||||||
|
private static final Logger log = new Logger(OpenTelemetryEmitter.class);
|
||||||
|
private final Tracer tracer;
|
||||||
|
private final TextMapPropagator propagator;
|
||||||
|
|
||||||
|
OpenTelemetryEmitter(OpenTelemetry openTelemetry)
|
||||||
|
{
|
||||||
|
tracer = openTelemetry.getTracer("druid-opentelemetry-extension");
|
||||||
|
propagator = openTelemetry.getPropagators().getTextMapPropagator();
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void start()
|
||||||
|
{
|
||||||
|
log.debug("Starting OpenTelemetryEmitter");
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void emit(Event e)
|
||||||
|
{
|
||||||
|
if (!(e instanceof ServiceMetricEvent)) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
ServiceMetricEvent event = (ServiceMetricEvent) e;
|
||||||
|
|
||||||
|
// We only generate spans for the following types of events:
|
||||||
|
// query/time
|
||||||
|
if (!event.getMetric().equals("query/time")) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
emitQueryTimeEvent(event);
|
||||||
|
}
|
||||||
|
|
||||||
|
private void emitQueryTimeEvent(ServiceMetricEvent event)
|
||||||
|
{
|
||||||
|
Context opentelemetryContext = propagator.extract(Context.current(), event, DRUID_CONTEXT_TEXT_MAP_GETTER);
|
||||||
|
|
||||||
|
try (Scope scope = opentelemetryContext.makeCurrent()) {
|
||||||
|
DateTime endTime = event.getCreatedTime();
|
||||||
|
DateTime startTime = endTime.minusMillis(event.getValue().intValue());
|
||||||
|
|
||||||
|
Span span = tracer.spanBuilder(event.getService())
|
||||||
|
.setStartTimestamp(startTime.getMillis(), TimeUnit.MILLISECONDS)
|
||||||
|
.startSpan();
|
||||||
|
|
||||||
|
getContext(event).entrySet()
|
||||||
|
.stream()
|
||||||
|
.filter(entry -> entry.getValue() != null)
|
||||||
|
.filter(entry -> !TRACEPARENT_PROPAGATION_FIELDS.contains(entry.getKey()))
|
||||||
|
.forEach(entry -> span.setAttribute(entry.getKey(), entry.getValue().toString()));
|
||||||
|
|
||||||
|
Object status = event.getUserDims().get("success");
|
||||||
|
if (status == null) {
|
||||||
|
span.setStatus(StatusCode.UNSET);
|
||||||
|
} else if (status.toString().equals("true")) {
|
||||||
|
span.setStatus(StatusCode.OK);
|
||||||
|
} else {
|
||||||
|
span.setStatus(StatusCode.ERROR);
|
||||||
|
}
|
||||||
|
|
||||||
|
span.end(endTime.getMillis(), TimeUnit.MILLISECONDS);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
private static Map<String, Object> getContext(ServiceMetricEvent event)
|
||||||
|
{
|
||||||
|
Object context = event.getUserDims().get("context");
|
||||||
|
if (context instanceof Map) {
|
||||||
|
return (Map<String, Object>) context;
|
||||||
|
}
|
||||||
|
return Collections.emptyMap();
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void flush()
|
||||||
|
{
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void close()
|
||||||
|
{
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,27 @@
|
||||||
|
/*
|
||||||
|
* Licensed to the Apache Software Foundation (ASF) under one
|
||||||
|
* or more contributor license agreements. See the NOTICE file
|
||||||
|
* distributed with this work for additional information
|
||||||
|
* regarding copyright ownership. The ASF licenses this file
|
||||||
|
* to you 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
|
||||||
|
*
|
||||||
|
* http://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.apache.druid.emitter.opentelemetry;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* The placeholder for future configurations but there is no configuration yet
|
||||||
|
*/
|
||||||
|
public class OpenTelemetryEmitterConfig
|
||||||
|
{
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,60 @@
|
||||||
|
/*
|
||||||
|
* Licensed to the Apache Software Foundation (ASF) under one
|
||||||
|
* or more contributor license agreements. See the NOTICE file
|
||||||
|
* distributed with this work for additional information
|
||||||
|
* regarding copyright ownership. The ASF licenses this file
|
||||||
|
* to you 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
|
||||||
|
*
|
||||||
|
* http://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.apache.druid.emitter.opentelemetry;
|
||||||
|
|
||||||
|
import com.fasterxml.jackson.databind.Module;
|
||||||
|
import com.fasterxml.jackson.databind.ObjectMapper;
|
||||||
|
import com.google.inject.Binder;
|
||||||
|
import com.google.inject.Provides;
|
||||||
|
import com.google.inject.name.Named;
|
||||||
|
import io.opentelemetry.sdk.autoconfigure.OpenTelemetrySdkAutoConfiguration;
|
||||||
|
import org.apache.druid.guice.JsonConfigProvider;
|
||||||
|
import org.apache.druid.guice.ManageLifecycle;
|
||||||
|
import org.apache.druid.initialization.DruidModule;
|
||||||
|
import org.apache.druid.java.util.emitter.core.Emitter;
|
||||||
|
|
||||||
|
import java.util.Collections;
|
||||||
|
import java.util.List;
|
||||||
|
|
||||||
|
public class OpenTelemetryEmitterModule implements DruidModule
|
||||||
|
{
|
||||||
|
private static final String EMITTER_TYPE = "opentelemetry";
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public List<? extends Module> getJacksonModules()
|
||||||
|
{
|
||||||
|
return Collections.emptyList();
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void configure(Binder binder)
|
||||||
|
{
|
||||||
|
JsonConfigProvider.bind(binder, "druid.emitter." + EMITTER_TYPE, OpenTelemetryEmitterConfig.class);
|
||||||
|
}
|
||||||
|
|
||||||
|
@Provides
|
||||||
|
@ManageLifecycle
|
||||||
|
@Named(EMITTER_TYPE)
|
||||||
|
public Emitter getEmitter(OpenTelemetryEmitterConfig config, ObjectMapper mapper)
|
||||||
|
{
|
||||||
|
// It's a good practice to not set the GlobalOpenTelemetry since there's no need to do that
|
||||||
|
return new OpenTelemetryEmitter(OpenTelemetrySdkAutoConfiguration.initialize(false));
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,16 @@
|
||||||
|
# Licensed to the Apache Software Foundation (ASF) under one or more
|
||||||
|
# contributor license agreements. See the NOTICE file distributed with
|
||||||
|
# this work for additional information regarding copyright ownership.
|
||||||
|
# The ASF licenses this file to You 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
|
||||||
|
#
|
||||||
|
# http://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.
|
||||||
|
|
||||||
|
org.apache.druid.emitter.opentelemetry.OpenTelemetryEmitterModule
|
||||||
|
|
@ -0,0 +1,267 @@
|
||||||
|
/*
|
||||||
|
* Licensed to the Apache Software Foundation (ASF) under one
|
||||||
|
* or more contributor license agreements. See the NOTICE file
|
||||||
|
* distributed with this work for additional information
|
||||||
|
* regarding copyright ownership. The ASF licenses this file
|
||||||
|
* to you 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
|
||||||
|
*
|
||||||
|
* http://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.apache.druid.emitter.opentelemetry;
|
||||||
|
|
||||||
|
import io.opentelemetry.api.OpenTelemetry;
|
||||||
|
import io.opentelemetry.api.common.AttributeKey;
|
||||||
|
import io.opentelemetry.api.trace.StatusCode;
|
||||||
|
import io.opentelemetry.api.trace.propagation.W3CTraceContextPropagator;
|
||||||
|
import io.opentelemetry.context.propagation.ContextPropagators;
|
||||||
|
import io.opentelemetry.sdk.OpenTelemetrySdk;
|
||||||
|
import io.opentelemetry.sdk.common.CompletableResultCode;
|
||||||
|
import io.opentelemetry.sdk.trace.SdkTracerProvider;
|
||||||
|
import io.opentelemetry.sdk.trace.data.SpanData;
|
||||||
|
import io.opentelemetry.sdk.trace.export.SimpleSpanProcessor;
|
||||||
|
import io.opentelemetry.sdk.trace.export.SpanExporter;
|
||||||
|
import org.apache.druid.java.util.common.DateTimes;
|
||||||
|
import org.apache.druid.java.util.emitter.core.Event;
|
||||||
|
import org.apache.druid.java.util.emitter.service.ServiceMetricEvent;
|
||||||
|
import org.joda.time.DateTime;
|
||||||
|
import org.junit.Assert;
|
||||||
|
import org.junit.Before;
|
||||||
|
import org.junit.Test;
|
||||||
|
|
||||||
|
import java.util.Collection;
|
||||||
|
import java.util.Collections;
|
||||||
|
import java.util.HashMap;
|
||||||
|
import java.util.Map;
|
||||||
|
|
||||||
|
|
||||||
|
public class OpenTelemetryEmitterTest
|
||||||
|
{
|
||||||
|
private static class NoopExporter implements SpanExporter
|
||||||
|
{
|
||||||
|
public Collection<SpanData> spanDataCollection;
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public CompletableResultCode export(Collection<SpanData> collection)
|
||||||
|
{
|
||||||
|
this.spanDataCollection = collection;
|
||||||
|
return CompletableResultCode.ofSuccess();
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public CompletableResultCode flush()
|
||||||
|
{
|
||||||
|
return CompletableResultCode.ofSuccess();
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public CompletableResultCode shutdown()
|
||||||
|
{
|
||||||
|
return CompletableResultCode.ofSuccess();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
private static final DateTime TIMESTAMP = DateTimes.of(2021, 11, 5, 1, 1);
|
||||||
|
|
||||||
|
private OpenTelemetry openTelemetry;
|
||||||
|
private NoopExporter noopExporter;
|
||||||
|
private OpenTelemetryEmitter emitter;
|
||||||
|
|
||||||
|
@Before
|
||||||
|
public void setup()
|
||||||
|
{
|
||||||
|
noopExporter = new NoopExporter();
|
||||||
|
openTelemetry = OpenTelemetrySdk.builder()
|
||||||
|
.setTracerProvider(SdkTracerProvider.builder()
|
||||||
|
.addSpanProcessor(SimpleSpanProcessor.create(
|
||||||
|
noopExporter))
|
||||||
|
.build())
|
||||||
|
.setPropagators(ContextPropagators.create(W3CTraceContextPropagator.getInstance()))
|
||||||
|
.build();
|
||||||
|
emitter = new OpenTelemetryEmitter(openTelemetry);
|
||||||
|
}
|
||||||
|
|
||||||
|
// Check that we don't call "emitQueryTimeEvent" method for event that is not instance of ServiceMetricEvent
|
||||||
|
@Test
|
||||||
|
public void testNoEmitNotServiceMetric()
|
||||||
|
{
|
||||||
|
final Event notServiceMetricEvent =
|
||||||
|
new Event()
|
||||||
|
{
|
||||||
|
@Override
|
||||||
|
public Map<String, Object> toMap()
|
||||||
|
{
|
||||||
|
return Collections.emptyMap();
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public String getFeed()
|
||||||
|
{
|
||||||
|
return null;
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
emitter.emit(notServiceMetricEvent);
|
||||||
|
Assert.assertNull(noopExporter.spanDataCollection);
|
||||||
|
}
|
||||||
|
|
||||||
|
// Check that we don't call "emitQueryTimeEvent" method for ServiceMetricEvent that is not "query/time" type
|
||||||
|
@Test
|
||||||
|
public void testNoEmitNotQueryTimeMetric()
|
||||||
|
{
|
||||||
|
final ServiceMetricEvent notQueryTimeMetric =
|
||||||
|
new ServiceMetricEvent.Builder().build(
|
||||||
|
TIMESTAMP,
|
||||||
|
"query/cache/total/hitRate",
|
||||||
|
0.54
|
||||||
|
)
|
||||||
|
.build(
|
||||||
|
"broker",
|
||||||
|
"brokerHost1"
|
||||||
|
);
|
||||||
|
|
||||||
|
emitter.emit(notQueryTimeMetric);
|
||||||
|
Assert.assertNull(noopExporter.spanDataCollection);
|
||||||
|
}
|
||||||
|
|
||||||
|
@Test
|
||||||
|
public void testTraceparentId()
|
||||||
|
{
|
||||||
|
final String traceId = "00-54ef39243e3feb12072e0f8a74c1d55a-ad6d5b581d7c29c1-01";
|
||||||
|
final String expectedParentTraceId = "54ef39243e3feb12072e0f8a74c1d55a";
|
||||||
|
final String expectedParentSpanId = "ad6d5b581d7c29c1";
|
||||||
|
final Map<String, String> context = new HashMap<>();
|
||||||
|
context.put("traceparent", traceId);
|
||||||
|
|
||||||
|
final String serviceName = "druid/broker";
|
||||||
|
final DateTime createdTime = TIMESTAMP;
|
||||||
|
final long metricValue = 100;
|
||||||
|
|
||||||
|
final ServiceMetricEvent queryTimeMetric =
|
||||||
|
new ServiceMetricEvent.Builder().setDimension("context", context)
|
||||||
|
.build(
|
||||||
|
createdTime,
|
||||||
|
"query/time",
|
||||||
|
metricValue
|
||||||
|
)
|
||||||
|
.build(
|
||||||
|
serviceName,
|
||||||
|
"host"
|
||||||
|
);
|
||||||
|
|
||||||
|
emitter.emit(queryTimeMetric);
|
||||||
|
|
||||||
|
Assert.assertEquals(1, noopExporter.spanDataCollection.size());
|
||||||
|
|
||||||
|
SpanData actualSpanData = noopExporter.spanDataCollection.iterator().next();
|
||||||
|
Assert.assertEquals(serviceName, actualSpanData.getName());
|
||||||
|
Assert.assertEquals((createdTime.getMillis() - metricValue) * 1_000_000, actualSpanData.getStartEpochNanos());
|
||||||
|
Assert.assertEquals(expectedParentTraceId, actualSpanData.getParentSpanContext().getTraceId());
|
||||||
|
Assert.assertEquals(expectedParentSpanId, actualSpanData.getParentSpanContext().getSpanId());
|
||||||
|
}
|
||||||
|
|
||||||
|
@Test
|
||||||
|
public void testAttributes()
|
||||||
|
{
|
||||||
|
final Map<String, String> context = new HashMap<>();
|
||||||
|
final String expectedAttributeKey = "attribute";
|
||||||
|
final String expectedAttributeValue = "value";
|
||||||
|
context.put(expectedAttributeKey, expectedAttributeValue);
|
||||||
|
|
||||||
|
final ServiceMetricEvent queryTimeMetricWithAttributes =
|
||||||
|
new ServiceMetricEvent.Builder().setDimension("context", context)
|
||||||
|
.build(
|
||||||
|
TIMESTAMP,
|
||||||
|
"query/time",
|
||||||
|
100
|
||||||
|
)
|
||||||
|
.build(
|
||||||
|
"druid/broker",
|
||||||
|
"host"
|
||||||
|
);
|
||||||
|
|
||||||
|
emitter.emit(queryTimeMetricWithAttributes);
|
||||||
|
|
||||||
|
SpanData actualSpanData = noopExporter.spanDataCollection.iterator().next();
|
||||||
|
Assert.assertEquals(1, actualSpanData.getAttributes().size());
|
||||||
|
Assert.assertEquals(
|
||||||
|
expectedAttributeValue,
|
||||||
|
actualSpanData.getAttributes().get(AttributeKey.stringKey(expectedAttributeKey))
|
||||||
|
);
|
||||||
|
}
|
||||||
|
|
||||||
|
@Test
|
||||||
|
public void testFilterNullValue()
|
||||||
|
{
|
||||||
|
final Map<String, String> context = new HashMap<>();
|
||||||
|
context.put("attributeKey", null);
|
||||||
|
|
||||||
|
final ServiceMetricEvent queryTimeMetric =
|
||||||
|
new ServiceMetricEvent.Builder().setDimension("context", context)
|
||||||
|
.build(
|
||||||
|
TIMESTAMP,
|
||||||
|
"query/time",
|
||||||
|
100
|
||||||
|
)
|
||||||
|
.build(
|
||||||
|
"druid/broker",
|
||||||
|
"host"
|
||||||
|
);
|
||||||
|
|
||||||
|
emitter.emit(queryTimeMetric);
|
||||||
|
|
||||||
|
SpanData actualSpanData = noopExporter.spanDataCollection.iterator().next();
|
||||||
|
Assert.assertEquals(0, actualSpanData.getAttributes().size());
|
||||||
|
}
|
||||||
|
|
||||||
|
@Test
|
||||||
|
public void testOkStatus()
|
||||||
|
{
|
||||||
|
final ServiceMetricEvent queryTimeMetric =
|
||||||
|
new ServiceMetricEvent.Builder().setDimension("success", "true")
|
||||||
|
.build(
|
||||||
|
TIMESTAMP,
|
||||||
|
"query/time",
|
||||||
|
100
|
||||||
|
)
|
||||||
|
.build(
|
||||||
|
"druid/broker",
|
||||||
|
"host"
|
||||||
|
);
|
||||||
|
|
||||||
|
emitter.emit(queryTimeMetric);
|
||||||
|
|
||||||
|
SpanData actualSpanData = noopExporter.spanDataCollection.iterator().next();
|
||||||
|
Assert.assertEquals(StatusCode.OK, actualSpanData.getStatus().getStatusCode());
|
||||||
|
}
|
||||||
|
|
||||||
|
@Test
|
||||||
|
public void testErrorStatus()
|
||||||
|
{
|
||||||
|
final ServiceMetricEvent queryTimeMetric =
|
||||||
|
new ServiceMetricEvent.Builder().setDimension("success", "false")
|
||||||
|
.build(
|
||||||
|
TIMESTAMP,
|
||||||
|
"query/time",
|
||||||
|
100
|
||||||
|
)
|
||||||
|
.build(
|
||||||
|
"druid/broker",
|
||||||
|
"host"
|
||||||
|
);
|
||||||
|
|
||||||
|
emitter.emit(queryTimeMetric);
|
||||||
|
|
||||||
|
SpanData actualSpanData = noopExporter.spanDataCollection.iterator().next();
|
||||||
|
Assert.assertEquals(StatusCode.ERROR, actualSpanData.getStatus().getStatusCode());
|
||||||
|
}
|
||||||
|
}
|
||||||
3
pom.xml
3
pom.xml
|
|
@ -198,6 +198,7 @@
|
||||||
<module>extensions-contrib/gce-extensions</module>
|
<module>extensions-contrib/gce-extensions</module>
|
||||||
<module>extensions-contrib/aliyun-oss-extensions</module>
|
<module>extensions-contrib/aliyun-oss-extensions</module>
|
||||||
<module>extensions-contrib/prometheus-emitter</module>
|
<module>extensions-contrib/prometheus-emitter</module>
|
||||||
|
<module>extensions-contrib/opentelemetry-emitter</module>
|
||||||
<!-- distribution packaging -->
|
<!-- distribution packaging -->
|
||||||
<module>distribution</module>
|
<module>distribution</module>
|
||||||
</modules>
|
</modules>
|
||||||
|
|
@ -1567,7 +1568,7 @@
|
||||||
<plugin>
|
<plugin>
|
||||||
<groupId>org.apache.maven.plugins</groupId>
|
<groupId>org.apache.maven.plugins</groupId>
|
||||||
<artifactId>maven-shade-plugin</artifactId>
|
<artifactId>maven-shade-plugin</artifactId>
|
||||||
<version>2.2</version>
|
<version>3.2.4</version>
|
||||||
</plugin>
|
</plugin>
|
||||||
<plugin>
|
<plugin>
|
||||||
<groupId>org.apache.maven.plugins</groupId>
|
<groupId>org.apache.maven.plugins</groupId>
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue