mv com/google/domain/registry google/registry

This change renames directories in preparation for the great package
rename. The repository is now in a broken state because the code
itself hasn't been updated. However this should ensure that git
correctly preserves history for each file.

java/google/registry/tools/server/KillAllEppResourcesAction.java

@@ -0,0 +1,113 @@
+// 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 com.google.domain.registry.tools.server;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.domain.registry.model.ofy.ObjectifyService.ofy;
+import static com.google.domain.registry.request.Action.Method.POST;
+import static com.google.domain.registry.util.PipelineUtils.createJobPath;
+
+import com.google.appengine.tools.mapreduce.Mapper;
+import com.google.common.collect.ImmutableList;
+import com.google.domain.registry.config.RegistryEnvironment;
+import com.google.domain.registry.mapreduce.MapreduceAction;
+import com.google.domain.registry.mapreduce.MapreduceRunner;
+import com.google.domain.registry.mapreduce.inputs.EppResourceInputs;
+import com.google.domain.registry.model.EppResource;
+import com.google.domain.registry.model.domain.DomainApplication;
+import com.google.domain.registry.model.index.DomainApplicationIndex;
+import com.google.domain.registry.model.index.EppResourceIndex;
+import com.google.domain.registry.model.index.ForeignKeyIndex;
+import com.google.domain.registry.request.Action;
+import com.google.domain.registry.request.Response;
+
+import com.googlecode.objectify.Key;
+import com.googlecode.objectify.Work;
+
+import javax.inject.Inject;
+
+/** Deletes all {@link EppResource} objects in datastore, including indices and descendants. */
+@Action(path = "/_dr/task/killAllEppResources", method = POST)
+public class KillAllEppResourcesAction implements MapreduceAction {
+
+  @Inject MapreduceRunner mrRunner;
+  @Inject Response response;
+  @Inject KillAllEppResourcesAction() {}
+
+  @Override
+  public final void run() {
+    checkArgument( // safety
+        RegistryEnvironment.get() == RegistryEnvironment.CRASH
+            || RegistryEnvironment.get() == RegistryEnvironment.UNITTEST,
+        "DO NOT RUN ANYWHERE ELSE EXCEPT CRASH OR TESTS.");
+    response.sendJavaScriptRedirect(createJobPath(mrRunner
+        .setJobName("Delete all EppResources, children, and indices")
+        .setModuleName("tools")
+        .runMapreduce(
+            new KillAllEppResourcesMapper(),
+            new KillAllEntitiesReducer(),
+            ImmutableList.of(EppResourceInputs.createIndexInput()))));
+  }
+
+  /**
+   * Mapper to delete an {@link EppResourceIndex}, its referent, all descendants of each referent,
+   * and the {@link ForeignKeyIndex} or {@link DomainApplicationIndex} of the referent, as
+   * appropriate.
+   *
+   * <p>This will delete:
+   * <ul>
+   *   <li>All {@link ForeignKeyIndex} types
+   *   <li>{@link DomainApplicationIndex}
+   *   <li>{@link EppResourceIndex}
+   *   <li>All {@link EppResource} types
+   *   <li>{@code HistoryEntry}
+   *   <li>All {@code BillingEvent} types
+   *   <li>All {@code PollMessage} types
+   * </ul>
+   */
+  static class KillAllEppResourcesMapper extends Mapper<EppResourceIndex, Key<?>, Key<?>> {
+
+    private static final long serialVersionUID = 8205309000002507407L;
+
+    @Override
+    public void map(final EppResourceIndex eri) {
+      Key<EppResourceIndex> eriKey = Key.create(eri);
+      emitAndIncrementCounter(eriKey, eriKey);
+      Key<?> resourceKey = eri.getReference().getKey();
+      for (Key<Object> key : ofy().load().ancestor(resourceKey).keys()) {
+        emitAndIncrementCounter(resourceKey, key);
+      }
+      // Load in a transaction to make sure we don't get stale data (in case of host renames).
+      // TODO(b/27424173): A transaction is overkill. When we have memcache-skipping, use that.
+      EppResource resource = ofy().transactNewReadOnly(
+          new Work<EppResource>() {
+            @Override
+            public EppResource run() {
+              return eri.getReference().get();
+            }});
+      // TODO(b/28247733): What about FKI's for renamed hosts?
+      Key<?> indexKey = resource instanceof DomainApplication
+          ? DomainApplicationIndex.createKey((DomainApplication) resource)
+          : ForeignKeyIndex.createKey(resource);
+      emitAndIncrementCounter(indexKey, indexKey);
+    }
+
+    private void emitAndIncrementCounter(Key<?> ancestor, Key<?> child) {
+      emit(ancestor, child);
+      getContext().incrementCounter("entities emitted");
+      getContext().incrementCounter(String.format("%s emitted", child.getKind()));
+    }
+  }
+}