Add mapreduce cleanup action

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=149432516

javatests/google/registry/batch/TestMapreduceEntityCleanupUtil.java

@@ -0,0 +1,60 @@
+// Copyright 2017 The Nomulus 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.batch;
+
+import com.google.common.base.Optional;
+import javax.annotation.Nullable;
+import org.joda.time.DateTime;
+
+/**
+ * Test harness for {@link MapreduceEntityCleanupUtil}.
+ *
+ * <p>It's a somewhat like a mock, in that it records the number of calls to {@link
+ * #findEligibleJobsByJobName}, and it allows the overriding of the number of jobs returned per
+ * search, to allow testing of subsequent searches. But it's not a full mock by any means.
+ */
+public class TestMapreduceEntityCleanupUtil extends MapreduceEntityCleanupUtil {
+
+  private int maxNumberOfJobsPerSearch;
+  private int numSearches = 0;
+
+  public TestMapreduceEntityCleanupUtil() {
+    this.maxNumberOfJobsPerSearch = MAX_NUMBER_OF_JOBS_PER_SEARCH;
+  }
+
+  @Override
+  protected int getMaxNumberOfJobsPerSearch() {
+    return maxNumberOfJobsPerSearch;
+  }
+
+  public void setMaxNumberOfJobsPerSearch(int maxNumberOfJobsPerSearch) {
+    this.maxNumberOfJobsPerSearch = maxNumberOfJobsPerSearch;
+  }
+
+  @Override
+  public EligibleJobResults findEligibleJobsByJobName(
+      @Nullable String jobName,
+      DateTime cutoffDate,
+      Optional<Integer> maxJobs,
+      boolean ignoreState,
+      Optional<String> cursor) {
+    numSearches++;
+    return super.findEligibleJobsByJobName(jobName, cutoffDate, maxJobs, ignoreState, cursor);
+  }
+
+  public int getNumSearchesPerformed() {
+    return numSearches;
+  }
+}