Add google java format to gradle.

src/adservice/build.gradle

@@ -10,12 +10,14 @@ buildscript {
     }
     dependencies {
         classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.3'
+        classpath "gradle.plugin.com.github.sherter.google-java-format:google-java-format-gradle-plugin:0.7.1"
     }
 }
 
 apply plugin: 'idea'
 apply plugin: 'java'
 apply plugin: 'com.google.protobuf'
+apply plugin: 'com.github.sherter.google-java-format'
 
 repositories {
     mavenCentral()
@@ -81,6 +83,10 @@ protobuf {
     }
 }
 
+googleJavaFormat {
+    toolVersion '1.7'
+}
+
 // Inform IDEs like IntelliJ IDEA, Eclipse or NetBeans about the generated code.
 sourceSets {
     main {

src/adservice/src/main/java/hipstershop/AdService.java

@@ -16,8 +16,8 @@
 
 package hipstershop;
 
-import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableListMultimap;
+import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.Iterables;
 import hipstershop.Demo.Ad;
 import hipstershop.Demo.AdRequest;
@@ -26,13 +26,13 @@ import io.grpc.Server;
 import io.grpc.ServerBuilder;
 import io.grpc.StatusRuntimeException;
 import io.grpc.health.v1.HealthCheckResponse.ServingStatus;
-import io.grpc.stub.StreamObserver;
 import io.grpc.services.*;
+import io.grpc.stub.StreamObserver;
 import io.opencensus.common.Duration;
 import io.opencensus.contrib.grpc.metrics.RpcViews;
-import io.opencensus.exporter.trace.jaeger.JaegerTraceExporter;
 import io.opencensus.exporter.stats.stackdriver.StackdriverStatsConfiguration;
 import io.opencensus.exporter.stats.stackdriver.StackdriverStatsExporter;
+import io.opencensus.exporter.trace.jaeger.JaegerTraceExporter;
 import io.opencensus.exporter.trace.stackdriver.StackdriverTraceConfiguration;
 import io.opencensus.exporter.trace.stackdriver.StackdriverTraceExporter;
 import io.opencensus.trace.AttributeValue;
@@ -40,14 +40,14 @@ import io.opencensus.trace.Span;
 import io.opencensus.trace.Tracer;
 import io.opencensus.trace.Tracing;
 import java.io.IOException;
-import java.util.Collection;
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.List;
 import java.util.Random;
 import java.util.concurrent.TimeUnit;
 import org.apache.logging.log4j.Level;
-import org.apache.logging.log4j.Logger;
 import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 
 public final class AdService {
 
@@ -64,8 +64,12 @@ public final class AdService {
     int port = Integer.parseInt(System.getenv("PORT"));
     healthMgr = new HealthStatusManager();
 
-    server = ServerBuilder.forPort(port).addService(new AdServiceImpl())
+    server =
-        .addService(healthMgr.getHealthService()).build().start();
+        ServerBuilder.forPort(port)
+            .addService(new AdServiceImpl())
+            .addService(healthMgr.getHealthService())
+            .build()
+            .start();
     logger.info("Ad Service started, listening on " + port);
     Runtime.getRuntime()
         .addShutdownHook(
@@ -95,7 +99,7 @@ public final class AdService {
      *
      * @param req the request containing context.
      * @param responseObserver the stream observer which gets notified with the value of {@code
-     * AdResponse}
+     *     AdResponse}
      */
     @Override
     public void getAds(AdRequest req, StreamObserver<AdResponse> responseObserver) {
@@ -157,9 +161,7 @@ public final class AdService {
     return service;
   }
 
-  /**
+  /** Await termination on the main thread since the grpc library uses daemon threads. */
-   * Await termination on the main thread since the grpc library uses daemon threads.
-   */
   private void blockUntilShutdown() throws InterruptedException {
     if (server != null) {
       server.awaitTermination();
@@ -167,20 +169,41 @@ public final class AdService {
   }
 
   private static ImmutableListMultimap<String, Ad> createAdsMap() {
-    Ad camera = Ad.newBuilder().setRedirectUrl("/product/2ZYFJ3GM2N")
+    Ad camera =
-        .setText("Film camera for sale. 50% off.").build();
+        Ad.newBuilder()
-    Ad lens = Ad.newBuilder().setRedirectUrl("/product/66VCHSJNUP")
+            .setRedirectUrl("/product/2ZYFJ3GM2N")
-        .setText("Vintage camera lens for sale. 20% off.").build();
+            .setText("Film camera for sale. 50% off.")
-    Ad recordPlayer = Ad.newBuilder().setRedirectUrl("/product/0PUK6V6EV0")
+            .build();
-        .setText("Vintage record player for sale. 30% off.").build();
+    Ad lens =
-    Ad bike = Ad.newBuilder().setRedirectUrl("/product/9SIQT8TOJO")
+        Ad.newBuilder()
-        .setText("City Bike for sale. 10% off.").build();
+            .setRedirectUrl("/product/66VCHSJNUP")
-    Ad baristaKit = Ad.newBuilder().setRedirectUrl("/product/1YMWWN1N4O")
+            .setText("Vintage camera lens for sale. 20% off.")
-        .setText("Home Barista kitchen kit for sale. Buy one, get second kit for free").build();
+            .build();
-    Ad airPlant = Ad.newBuilder().setRedirectUrl("/product/6E92ZMYYFZ")
+    Ad recordPlayer =
-        .setText("Air plants for sale. Buy two, get third one for free").build();
+        Ad.newBuilder()
-    Ad terrarium = Ad.newBuilder().setRedirectUrl("/product/L9ECAV7KIM")
+            .setRedirectUrl("/product/0PUK6V6EV0")
-        .setText("Terrarium for sale. Buy one, get second one for free").build();
+            .setText("Vintage record player for sale. 30% off.")
+            .build();
+    Ad bike =
+        Ad.newBuilder()
+            .setRedirectUrl("/product/9SIQT8TOJO")
+            .setText("City Bike for sale. 10% off.")
+            .build();
+    Ad baristaKit =
+        Ad.newBuilder()
+            .setRedirectUrl("/product/1YMWWN1N4O")
+            .setText("Home Barista kitchen kit for sale. Buy one, get second kit for free")
+            .build();
+    Ad airPlant =
+        Ad.newBuilder()
+            .setRedirectUrl("/product/6E92ZMYYFZ")
+            .setText("Air plants for sale. Buy two, get third one for free")
+            .build();
+    Ad terrarium =
+        Ad.newBuilder()
+            .setRedirectUrl("/product/L9ECAV7KIM")
+            .setText("Terrarium for sale. Buy one, get second one for free")
+            .build();
     return ImmutableListMultimap.<String, Ad>builder()
         .putAll("photography", camera, lens)
         .putAll("vintage", camera, lens, recordPlayer)
@@ -214,9 +237,11 @@ public final class AdService {
         }
       } catch (Exception e) {
         if (i == (maxAttempts - 1)) {
-          logger.log(Level.WARN, "Failed to register Stackdriver Exporter." +
+          logger.log(
-              " Tracing and Stats data will not reported to Stackdriver. Error message: " + e
+              Level.WARN,
-              .toString());
+              "Failed to register Stackdriver Exporter."
+                  + " Tracing and Stats data will not reported to Stackdriver. Error message: "
+                  + e.toString());
         } else {
           logger.info("Attempt to register Stackdriver Exporter in " + sleepTime + " seconds ");
           try {
@@ -242,18 +267,18 @@ public final class AdService {
     }
   }
 
-  /**
+  /** Main launches the server from the command line. */
-   * Main launches the server from the command line.
-   */
   public static void main(String[] args) throws IOException, InterruptedException {
     // Registers all RPC views.
     RpcViews.registerAllGrpcViews();
 
-    new Thread(new Runnable() {
+    new Thread(
-      public void run() {
+            new Runnable() {
-        initStackdriver();
+              public void run() {
-      }
+                initStackdriver();
-    }).start();
+              }
+            })
+        .start();
 
     // Register Jaeger
     initJaeger();

src/adservice/src/main/java/hipstershop/AdServiceClient.java

@@ -16,7 +16,6 @@
 
 package hipstershop;
 
-
 import hipstershop.Demo.Ad;
 import hipstershop.Demo.AdRequest;
 import hipstershop.Demo.AdResponse;
@@ -38,12 +37,10 @@ import io.opencensus.trace.samplers.Samplers;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Nullable;
 import org.apache.logging.log4j.Level;
-import org.apache.logging.log4j.Logger;
 import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 
-/**
+/** A simple client that requests ads from the Ads Service. */
- * A simple client that requests ads from the Ads Service.
- */
 public class AdServiceClient {
 
   private static final Logger logger = LogManager.getLogger(AdServiceClient.class);
@@ -52,9 +49,7 @@ public class AdServiceClient {
   private final ManagedChannel channel;
   private final hipstershop.AdServiceGrpc.AdServiceBlockingStub blockingStub;
 
-  /**
+  /** Construct client connecting to Ad Service at {@code host:port}. */
-   * Construct client connecting to Ad Service at {@code host:port}.
-   */
   private AdServiceClient(String host, int port) {
     this(
         ManagedChannelBuilder.forAddress(host, port)
@@ -64,9 +59,7 @@ public class AdServiceClient {
             .build());
   }
 
-  /**
+  /** Construct client for accessing RouteGuide server using the existing channel. */
-   * Construct client for accessing RouteGuide server using the existing channel.
-   */
   private AdServiceClient(ManagedChannel channel) {
     this.channel = channel;
     blockingStub = hipstershop.AdServiceGrpc.newBlockingStub(channel);
@@ -76,25 +69,24 @@ public class AdServiceClient {
     channel.shutdown().awaitTermination(5, TimeUnit.SECONDS);
   }
 
-  /**
+  /** Get Ads from Server. */
-   * Get Ads from Server.
-   */
   public void getAds(String contextKey) {
     logger.info("Get Ads with context " + contextKey + " ...");
     AdRequest request = AdRequest.newBuilder().addContextKeys(contextKey).build();
     AdResponse response;
 
     Span span =
-        tracer.spanBuilder("AdsClient").setRecordEvents(true).setSampler(Samplers.alwaysSample())
+        tracer
+            .spanBuilder("AdsClient")
+            .setRecordEvents(true)
+            .setSampler(Samplers.alwaysSample())
             .startSpan();
     try (Scope scope = tracer.withSpan(span)) {
       tracer.getCurrentSpan().addAnnotation("Getting Ads");
       response = blockingStub.getAds(request);
       tracer.getCurrentSpan().addAnnotation("Received response from Ads Service.");
     } catch (StatusRuntimeException e) {
-      tracer
+      tracer.getCurrentSpan().setStatus(StatusConverter.fromGrpcStatus(e.getStatus()));
-          .getCurrentSpan()
-          .setStatus(StatusConverter.fromGrpcStatus(e.getStatus()));
       logger.log(Level.WARN, "RPC failed: " + e.getStatus());
       return;
     } finally {
@@ -118,7 +110,6 @@ public class AdServiceClient {
     return portNumber;
   }
 
-
   private static String getStringOrDefaultFromArgs(
       String[] args, int index, @Nullable String defaultString) {
     String s = defaultString;
@@ -154,9 +145,11 @@ public class AdServiceClient {
                 .build());
       } catch (Exception e) {
         if (i == (maxAttempts - 1)) {
-          logger.log(Level.WARN, "Failed to register Stackdriver Exporter." +
+          logger.log(
-              " Tracing and Stats data will not reported to Stackdriver. Error message: " + e
+              Level.WARN,
-              .toString());
+              "Failed to register Stackdriver Exporter."
+                  + " Tracing and Stats data will not reported to Stackdriver. Error message: "
+                  + e.toString());
         } else {
           logger.info("Attempt to register Stackdriver Exporter in " + sleepTime + " seconds");
           try {
@@ -169,7 +162,7 @@ public class AdServiceClient {
     }
 
     // Register Prometheus exporters and export metrics to a Prometheus HTTPServer.
-    //PrometheusStatsCollector.createAndRegister();
+    // PrometheusStatsCollector.createAndRegister();
 
     AdServiceClient client = new AdServiceClient(host, serverPort);
     try {