Report the agent version to OAP

CHANGES.md

@@ -13,6 +13,7 @@ Release Notes.
 * Upgrade agent test tools
 * [Breaking Change] Compatible with 3.x and 4.x RabbitMQ Client, rename `rabbitmq-5.x-plugin` to `rabbitmq-plugin`
 * Polish JDBC plugins to make DBType accurate
+* Report the agent version to OAP as an instance attribute
 
 #### Documentation
 

apm-sniffer/apm-agent-core/pom.xml

@@ -33,10 +33,12 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <generateGitPropertiesFilename>${project.build.outputDirectory}/skywalking-agent-version.properties</generateGitPropertiesFilename>
         <guava.version>30.1.1-jre</guava.version>
         <wiremock.version>2.6.0</wiremock.version>
         <netty-tcnative-boringssl-static.version>2.0.7.Final</netty-tcnative-boringssl-static.version>
         <os-maven-plugin.version>1.4.1.Final</os-maven-plugin.version>
+        <git-commit-id-plugin.version>4.9.10</git-commit-id-plugin.version>
         <shade.com.google.source>com.google</shade.com.google.source>
         <shade.com.google.target>${shade.package}.${shade.com.google.source}</shade.com.google.target>
         <shade.io.grpc.source>io.grpc</shade.io.grpc.source>
@@ -171,6 +173,30 @@
                     </execution>
                 </executions>
             </plugin>
+            <plugin>
+                <groupId>pl.project13.maven</groupId>
+                <artifactId>git-commit-id-plugin</artifactId>
+                <version>${git-commit-id-plugin.version}</version>
+                <executions>
+                    <execution>
+                        <id>get-the-git-infos</id>
+                        <goals>
+                            <goal>revision</goal>
+                        </goals>
+                        <phase>initialize</phase>
+                    </execution>
+                </executions>
+                <configuration>
+                    <failOnNoGitDirectory>false</failOnNoGitDirectory>
+                    <generateGitPropertiesFile>true</generateGitPropertiesFile>
+                    <generateGitPropertiesFilename>${generateGitPropertiesFilename}</generateGitPropertiesFilename>
+                    <commitIdGenerationMode>full</commitIdGenerationMode>
+                    <includeOnlyProperties>
+                        <includeOnlyProperty>git.build.version</includeOnlyProperty>
+                        <includeOnlyProperty>^git.commit.id.(abbrev|full)$</includeOnlyProperty>
+                    </includeOnlyProperties>
+                </configuration>
+            </plugin>
             <plugin>
                 <artifactId>maven-shade-plugin</artifactId>
                 <executions>

apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/util/InstanceJsonPropertiesUtil.java

@@ -24,6 +24,7 @@
 import java.util.List;
 import java.util.Map;
 import org.apache.skywalking.apm.agent.core.conf.Config;
+import org.apache.skywalking.apm.agent.core.version.Version;
 import org.apache.skywalking.apm.network.common.v3.KeyStringValuePair;
 import org.apache.skywalking.apm.util.StringUtil;
 
@@ -45,6 +46,7 @@ public static List<KeyStringValuePair> parseProperties() {
 
         properties.add(KeyStringValuePair.newBuilder().setKey("namespace").setValue(Config.Agent.NAMESPACE).build());
         properties.add(KeyStringValuePair.newBuilder().setKey("cluster").setValue(Config.Agent.CLUSTER).build());
+        properties.add(KeyStringValuePair.newBuilder().setKey("version").setValue(Version.CURRENT.toString()).build());
 
         return properties;
     }

apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/version/Version.java

@@ -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.skywalking.apm.agent.core.version;
+
+import lombok.Getter;
+import org.apache.skywalking.apm.agent.core.logging.api.ILog;
+import org.apache.skywalking.apm.agent.core.logging.api.LogManager;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Properties;
+
+@Getter
+public enum Version {
+    CURRENT;
+
+    private static final ILog LOGGER = LogManager.getLogger(Version.class);
+    private static final String VERSION_FILE_NAME = "skywalking-agent-version.properties";
+    private final String buildVersion;
+    private final String commitIdAbbrev;
+
+    Version() {
+        try {
+            InputStream inputStream = Version.class.getClassLoader().getResourceAsStream(VERSION_FILE_NAME);
+            if (inputStream == null) {
+                throw new IOException("Can't find " + VERSION_FILE_NAME);
+            }
+            Properties properties = new Properties();
+            properties.load(inputStream);
+            buildVersion = properties.getProperty("git.build.version");
+            commitIdAbbrev = properties.getProperty("git.commit.id.abbrev");
+        } catch (Exception e) {
+            throw new ExceptionInInitializerError(e);
+        }
+    }
+
+    static {
+        LOGGER.info("SkyWalking agent version: {}", CURRENT);
+    }
+
+    @Override
+    public String toString() {
+        return String.format("%s-%s", buildVersion, commitIdAbbrev);
+    }
+}

pom.xml

@@ -402,7 +402,8 @@
                     </resourceIncludes>
                     <resourceExcludes>
                         **/.asf.yaml,
-                        **/.github/**
+                        **/.github/**,
+                        **/skywalking-agent-version.properties
                     </resourceExcludes>
                     <excludes>
                         **/target/generated-test-sources/**,

test/e2e/case/expected/service-instance.yml

@@ -36,6 +36,8 @@
     value: '{{ notEmpty .value }}'
   - name: ipv4s
     value: {{ notEmpty .value }}
+  - name: version
+    value: {{ notEmpty .value }}
     {{- end }}
   language: JAVA
   instanceuuid: {{ b64enc "e2e-service-provider" }}.1_{{ b64enc "provider1" }}

tools/releasing/create_release.sh

@@ -59,6 +59,11 @@ git checkout ${TAG_NAME}
 git submodule init
 git submodule update
 
+# Generate a static skywalking-agent-version.properties and override the template when releasing source tar
+# because after that there is no Git information anymore.
+./mvnw -q -pl apm-sniffer/apm-agent-core initialize \
+       -DgenerateGitPropertiesFilename="$(pwd)/apm-sniffer/apm-agent-core/src/main/resources/skywalking-agent-version.properties"
+
 cd ..
 # Build source code tar
 tar czf ${PRODUCT_NAME}-src.tgz \