report sdk version in user-agent

sdk-actors/src/main/java/io/dapr/actors/ActorUtils.java

@@ -49,4 +49,5 @@ public static String findActorTypeName(Class<?> actorClass) {
     ActorType actorTypeAnnotation = node.getAnnotation(ActorType.class);
     return actorTypeAnnotation != null ? actorTypeAnnotation.name() : actorClass.getSimpleName();
   }
+
 }

sdk-actors/src/main/java/io/dapr/actors/client/ActorClient.java

@@ -16,6 +16,7 @@
 import io.dapr.client.DaprApiProtocol;
 import io.dapr.client.DaprHttpBuilder;
 import io.dapr.config.Properties;
+import io.dapr.utils.Version;
 import io.dapr.v1.DaprGrpc;
 import io.grpc.Channel;
 import io.grpc.ManagedChannel;
@@ -102,7 +103,10 @@ private static ManagedChannel buildManagedChannel(DaprApiProtocol apiProtocol) {
       throw new IllegalArgumentException("Invalid port.");
     }
 
-    return ManagedChannelBuilder.forAddress(Properties.SIDECAR_IP.get(), port).usePlaintext().build();
+    return ManagedChannelBuilder.forAddress(Properties.SIDECAR_IP.get(), port)
+      .usePlaintext()
+      .userAgent(Version.getSdkVersion())
+      .build();
   }
 
   /**

sdk-actors/src/main/java/io/dapr/actors/runtime/ActorRuntime.java

@@ -20,6 +20,7 @@
 import io.dapr.config.Properties;
 import io.dapr.serializer.DaprObjectSerializer;
 import io.dapr.serializer.DefaultObjectSerializer;
+import io.dapr.utils.Version;
 import io.grpc.ManagedChannel;
 import io.grpc.ManagedChannelBuilder;
 import reactor.core.publisher.Mono;
@@ -338,7 +339,10 @@ private static ManagedChannel buildManagedChannel() {
       throw new IllegalStateException("Invalid port.");
     }
 
-    return ManagedChannelBuilder.forAddress(Properties.SIDECAR_IP.get(), port).usePlaintext().build();
+    return ManagedChannelBuilder.forAddress(Properties.SIDECAR_IP.get(), port)
+      .usePlaintext()
+      .userAgent(Version.getSdkVersion())
+      .build();
   }
 
   /**

sdk/pom.xml

@@ -25,6 +25,12 @@
   </properties>
 
   <dependencies>
+    <dependency>
+      <groupId>org.apache.maven.plugins</groupId>
+      <artifactId>maven-resources-plugin</artifactId>
+      <version>3.3.0</version>
+      <type>maven-plugin</type>
+    </dependency>
     <dependency>
       <groupId>io.dapr</groupId>
       <artifactId>dapr-sdk-autogen</artifactId>
@@ -106,6 +112,22 @@
   </dependencies>
 
   <build>
+    <resources>
+      <resource>
+          <directory>src/main/resources</directory>
+          <filtering>true</filtering>
+          <includes>
+              <include>**/sdk_version.properties</include>
+          </includes>
+      </resource>
+      <resource>
+          <directory>src/main/resources</directory>
+          <filtering>false</filtering>
+          <excludes>
+              <exclude>**/sdk_version.properties</exclude>
+          </excludes>
+      </resource>
+  </resources>
     <plugins>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>

sdk/src/main/java/io/dapr/client/DaprClientBuilder.java

@@ -16,6 +16,7 @@
 import io.dapr.config.Properties;
 import io.dapr.serializer.DaprObjectSerializer;
 import io.dapr.serializer.DefaultObjectSerializer;
+import io.dapr.utils.Version;
 import io.dapr.v1.DaprGrpc;
 import io.grpc.ManagedChannel;
 import io.grpc.ManagedChannelBuilder;
@@ -158,7 +159,7 @@ private DaprClient buildDaprClientGrpc() {
       throw new IllegalArgumentException("Invalid port.");
     }
     ManagedChannel channel = ManagedChannelBuilder.forAddress(
-        Properties.SIDECAR_IP.get(), port).usePlaintext().build();
+        Properties.SIDECAR_IP.get(), port).usePlaintext().userAgent(Version.getSdkVersion()).build();
     Closeable closeableChannel = () -> {
       if (channel != null && !channel.isShutdown()) {
         channel.shutdown();
@@ -176,4 +177,5 @@ private DaprClient buildDaprClientGrpc() {
   private DaprClient buildDaprClientHttp() {
     return new DaprClientHttp(this.daprHttpBuilder.build(), this.objectSerializer, this.stateSerializer);
   }
+
 }

sdk/src/main/java/io/dapr/client/DaprHttp.java

@@ -18,6 +18,7 @@
 import io.dapr.config.Properties;
 import io.dapr.exceptions.DaprError;
 import io.dapr.exceptions.DaprException;
+import io.dapr.utils.Version;
 import okhttp3.Call;
 import okhttp3.Callback;
 import okhttp3.HttpUrl;
@@ -304,6 +305,8 @@ private CompletableFuture<Response> doInvokeApi(String method,
     if (daprApiToken != null) {
       requestBuilder.addHeader(Headers.DAPR_API_TOKEN, daprApiToken);
     }
+
+    requestBuilder.addHeader(Headers.DAPR_USER_AGENT, Version.getSdkVersion());
 
     if (headers != null) {
       Optional.ofNullable(headers.entrySet()).orElse(Collections.emptySet()).stream()

sdk/src/main/java/io/dapr/client/Headers.java

@@ -27,4 +27,9 @@ class Headers {
    * Token for authentication from Application to Dapr runtime.
    */
   static final String DAPR_API_TOKEN = "dapr-api-token";
+
+  /**
+   * Header for Api Logging User-Agent.
+   */
+  static final String DAPR_USER_AGENT = "User-Agent";  
 }

sdk/src/main/java/io/dapr/utils/Version.java

@@ -0,0 +1,46 @@
+/*
+ * Copyright 2022 The Dapr 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
+ *     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 io.dapr.utils;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Properties;
+
+public final class Version {
+
+  private static String sdkVersion = null;
+
+  /**
+   * Retrieves sdk version from resources.
+   *
+   * @return String version of sdk.
+   */
+  public static String getSdkVersion() {
+
+    if (sdkVersion != null) {
+      return sdkVersion;
+    }
+
+    try (InputStream input = Version.class.getResourceAsStream("/sdk_version.properties");) {
+      Properties properties = new Properties();
+      properties.load(input);
+      sdkVersion = "dapr-sdk-java/v" + properties.getProperty("sdk_version", "unknown");
+    } catch (IOException e) {
+      sdkVersion = "unknown";
+    }
+
+    return sdkVersion;
+  }
+
+}

sdk/src/main/resources/sdk_version.properties

@@ -0,0 +1 @@
+sdk_version=${project.version}