Add tools/server/javascrap to open source build

java/google/registry/tools/server/javascrap/CountRecurringBillingEventsAction.java

@@ -0,0 +1,76 @@
+// 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.tools.server.javascrap;
+
+import static google.registry.mapreduce.inputs.EppResourceInputs.createChildEntityInput;
+import static google.registry.util.PipelineUtils.createJobPath;
+
+import com.google.appengine.tools.mapreduce.Input;
+import com.google.appengine.tools.mapreduce.Mapper;
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableSet;
+
+import google.registry.mapreduce.MapreduceAction;
+import google.registry.mapreduce.MapreduceRunner;
+import google.registry.model.EppResource;
+import google.registry.model.billing.BillingEvent.Recurring;
+import google.registry.request.Action;
+import google.registry.request.Response;
+
+import javax.inject.Inject;
+
+/**
+ * A mapreduce that counts all BillingEvent.Recurring entities.
+ *
+ * <p>This is a test of the ChildEntityInput/ChildEntityReader classes.
+ */
+@Action(path = "/_dr/task/countRecurringBillingEvents")
+public class CountRecurringBillingEventsAction implements MapreduceAction {
+
+  // TODO(b/27562876): Delete this mapreduce once tested in production.
+
+  @Inject MapreduceRunner mrRunner;
+  @Inject Response response;
+  @Inject CountRecurringBillingEventsAction() {}
+
+  @Override
+  public void run() {
+    response.sendJavaScriptRedirect(createJobPath(mrRunner
+        .setJobName("Count recurring billing events")
+        .setModuleName("tools")
+        .runMapOnly(
+            new CountRecurringBillingEventsMapper(),
+            ImmutableList.of(createRecurringInput()))));
+  }
+
+  private Input<? extends Recurring> createRecurringInput() {
+    return createChildEntityInput(
+        ImmutableSet.<Class<? extends EppResource>>of(EppResource.class),
+        ImmutableSet.<Class<? extends Recurring>>of(Recurring.class));
+  }
+
+  /** Mapper to count BillingEvent.Recurring resources. */
+  public static class CountRecurringBillingEventsMapper extends Mapper<Recurring, Void, Void> {
+
+    private static final long serialVersionUID = -8547238315947793512L;
+
+    public CountRecurringBillingEventsMapper() {}
+
+    @Override
+    public final void map(final Recurring recurring) {
+      getContext().incrementCounter("recurring billing events");
+    }
+  }
+}