Create Stackdriver module and inject it into backend module

This adds Stackdriver as a DI module into the registry codebase. This is a
necessary prerequisite for using Stackdriver based monitoring. For now, I'm
only adding it to the backend module as it will be more work to add it to the
frontend module.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=126730925

java/google/registry/module/backend/BackendComponent.java

@@ -27,6 +27,7 @@ import google.registry.groups.GroupsModule;
 import google.registry.groups.GroupssettingsModule;
 import google.registry.keyring.api.KeyModule;
 import google.registry.keyring.api.VoidKeyringModule;
+import google.registry.monitoring.whitebox.StackdriverModule;
 import google.registry.rde.JSchModule;
 import google.registry.request.Modules.AppIdentityCredentialModule;
 import google.registry.request.Modules.DatastoreServiceModule;
@@ -45,30 +46,32 @@ import javax.inject.Singleton;
 /** Dagger component with instance lifetime for "backend" App Engine module. */
 @Singleton
 @Component(
-    modules = {
-        AppIdentityCredentialModule.class,
-        BigqueryModule.class,
-        ConfigModule.class,
-        DatastoreServiceModule.class,
-        DirectoryModule.class,
-        DriveModule.class,
-        GcsServiceModule.class,
-        GoogleCredentialModule.class,
-        GroupsModule.class,
-        GroupssettingsModule.class,
-        JSchModule.class,
-        Jackson2Module.class,
-        KeyModule.class,
-        ModulesServiceModule.class,
-        SpreadsheetServiceModule.class,
-        SystemClockModule.class,
-        SystemSleeperModule.class,
-        URLFetchServiceModule.class,
-        UrlFetchTransportModule.class,
-        UseAppIdentityCredentialForGoogleApisModule.class,
-        VoidDnsWriterModule.class,
-        VoidKeyringModule.class,
-    })
+  modules = {
+    AppIdentityCredentialModule.class,
+    BigqueryModule.class,
+    ConfigModule.class,
+    DatastoreServiceModule.class,
+    DirectoryModule.class,
+    DriveModule.class,
+    GcsServiceModule.class,
+    GoogleCredentialModule.class,
+    GroupsModule.class,
+    GroupssettingsModule.class,
+    JSchModule.class,
+    Jackson2Module.class,
+    KeyModule.class,
+    ModulesServiceModule.class,
+    SpreadsheetServiceModule.class,
+    StackdriverModule.class,
+    SystemClockModule.class,
+    SystemSleeperModule.class,
+    URLFetchServiceModule.class,
+    UrlFetchTransportModule.class,
+    UseAppIdentityCredentialForGoogleApisModule.class,
+    VoidDnsWriterModule.class,
+    VoidKeyringModule.class,
+  }
+)
 interface BackendComponent {
   BackendRequestComponent startRequest(RequestModule requestModule);
 }

java/google/registry/monitoring/whitebox/BUILD

@@ -10,6 +10,9 @@ java_library(
     srcs = glob(["*.java"]),
     deps = [
         "//apiserving/discoverydata/bigquery:bigqueryv2",
+        "//google/monitoring:monitoring_java_lib",
+        "//java/com/google/api/client/http",
+        "//java/com/google/api/client/json",
         "//java/com/google/api/client/util",
         "//java/com/google/common/annotations",
         "//java/com/google/common/base",

java/google/registry/monitoring/whitebox/StackdriverModule.java

@@ -0,0 +1,54 @@
+// Copyright 2016 The Domain Registry Authors. All Rights Reserved.
+//
+// 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 google.registry.monitoring.whitebox;
+
+import com.google.api.client.http.HttpRequestInitializer;
+import com.google.api.client.http.HttpTransport;
+import com.google.api.client.json.JsonFactory;
+import com.google.api.services.monitoring.v3.Monitoring;
+import com.google.api.services.monitoring.v3.MonitoringScopes;
+
+import dagger.Module;
+import dagger.Provides;
+import dagger.multibindings.ElementsIntoSet;
+
+import google.registry.config.ConfigModule.Config;
+import google.registry.request.OAuthScopes;
+
+import java.util.Set;
+
+/** Dagger module for Google Stackdriver service connection objects. */
+@Module
+public final class StackdriverModule {
+
+  /** Provides OAuth2 scopes for the Stackdriver service needed by Domain Registry. */
+  @Provides
+  @ElementsIntoSet
+  @OAuthScopes
+  static Set<String> provideStackdriverOAuthScopes() {
+    return MonitoringScopes.all();
+  }
+
+  @Provides
+  static Monitoring provideMonitoring(
+      HttpTransport transport,
+      JsonFactory jsonFactory,
+      HttpRequestInitializer httpRequestInitializer,
+      @Config("projectId") String projectId) {
+    return new Monitoring.Builder(transport, jsonFactory, httpRequestInitializer)
+        .setApplicationName(projectId)
+        .build();
+  }
+}

java/google/registry/repositories.bzl

@@ -210,6 +210,12 @@ def domain_registry_repositories():
       sha1 = "098adf9128428643992ae6fa0878a7f45e7cec7d",
   )
 
+  native.maven_jar(
+      name = "google_api_services_monitoring",
+      artifact = "com.google.apis:google-api-services-monitoring:v3-rev6-1.21.0",
+      sha1 = "d8490745206ca5b1bfedad650dd64a69737a4b20",
+  )
+
   native.maven_jar(
       name = "google_api_services_storage",
       artifact = "com.google.apis:google-api-services-storage:v1-rev15-1.19.0",