Send client and java version to server (#59)

* Send client and java version to server

.gitignore

@@ -12,6 +12,7 @@ build/
 .idea/uiDesigner.xml
 .idea/codeStyles/codeStyleConfig.xml
 .idea/codeStyles/Project.xml
+.idea/inspectionProfiles/Project_Default.xml
 *.iws
 *.iml
 *.ipr

build.gradle

@@ -74,6 +74,7 @@ jar {
 		// add git revision and commit time to jar manifest
 		jar.manifest.attributes['X-Git-Revision'] = git.head().id
 		jar.manifest.attributes['X-Git-Commit-Time'] = git.head().dateTime.withZoneSameLocal(ZoneOffset.UTC)
+		jar.manifest.attributes['Implementation-Version'] = packageVersion
 		git.close()
 	}
 }

src/main/java/io/qdrant/client/QdrantGrpcClient.java

@@ -174,7 +174,10 @@ public static class Builder {
     }
 
     Builder(String host, int port, boolean useTransportLayerSecurity) {
-      this.channel = createChannel(host, port, useTransportLayerSecurity);
+      String clientVersion = Builder.class.getPackage().getImplementationVersion();
+      String javaVersion = System.getProperty("java.version");
+      String userAgent = "java-client/" + clientVersion + " java/" + javaVersion;
+      this.channel = createChannel(host, port, useTransportLayerSecurity, userAgent);
       this.shutdownChannelOnClose = true;
     }
 
@@ -222,7 +225,7 @@ public QdrantGrpcClient build() {
     }
 
     private static ManagedChannel createChannel(
-        String host, int port, boolean useTransportLayerSecurity) {
+        String host, int port, boolean useTransportLayerSecurity, String userAgent) {
       ManagedChannelBuilder<?> channelBuilder = ManagedChannelBuilder.forAddress(host, port);
 
       if (useTransportLayerSecurity) {
@@ -231,6 +234,8 @@ private static ManagedChannel createChannel(
         channelBuilder.usePlaintext();
       }
 
+      channelBuilder.userAgent(userAgent);
+
       return channelBuilder.build();
     }
   }