mirror of
https://github.com/google/nomulus.git
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86 lines
3.7 KiB
Java
86 lines
3.7 KiB
Java
// Copyright 2016 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package com.google.domain.registry.backup;
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import static com.google.appengine.api.taskqueue.QueueFactory.getQueue;
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import static com.google.appengine.api.taskqueue.TaskOptions.Builder.withUrl;
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import static com.google.domain.registry.backup.ExportCommitLogDiffAction.LOWER_CHECKPOINT_TIME_PARAM;
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import static com.google.domain.registry.backup.ExportCommitLogDiffAction.UPPER_CHECKPOINT_TIME_PARAM;
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import static com.google.domain.registry.model.ofy.ObjectifyService.ofy;
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import static com.google.domain.registry.util.DateTimeUtils.isBeforeOrAt;
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import static com.google.domain.registry.util.FormattingLogger.getLoggerForCallerClass;
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import com.google.domain.registry.model.ofy.CommitLogCheckpoint;
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import com.google.domain.registry.model.ofy.CommitLogCheckpointRoot;
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import com.google.domain.registry.request.Action;
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import com.google.domain.registry.util.Clock;
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import com.google.domain.registry.util.FormattingLogger;
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import com.google.domain.registry.util.TaskEnqueuer;
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import com.googlecode.objectify.VoidWork;
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import org.joda.time.DateTime;
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import javax.inject.Inject;
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/**
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* Action that saves commit log checkpoints to datastore and kicks off a diff export task.
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*
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* <p>We separate computing and saving the checkpoint from exporting it because the export to GCS
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* is retryable but should not require the computation of a new checkpoint. Saving the checkpoint
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* and enqueuing the export task are done transactionally, so any checkpoint that is saved will be
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* exported to GCS very soon.
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*
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* <p>This action's supported method is GET rather than POST because it gets invoked via cron.
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*/
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@Action(
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path = "/_dr/cron/commitLogCheckpoint",
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method = Action.Method.GET,
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automaticallyPrintOk = true)
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public final class CommitLogCheckpointAction implements Runnable {
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private static final FormattingLogger logger = getLoggerForCallerClass();
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private static final String QUEUE_NAME = "export-commits";
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@Inject Clock clock;
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@Inject CommitLogCheckpointStrategy strategy;
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@Inject TaskEnqueuer taskEnqueuer;
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@Inject CommitLogCheckpointAction() {}
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@Override
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public void run() {
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final CommitLogCheckpoint checkpoint = strategy.computeCheckpoint();
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logger.info("Generated candidate checkpoint for time " + checkpoint.getCheckpointTime());
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ofy().transact(new VoidWork() {
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@Override
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public void vrun() {
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DateTime lastWrittenTime = CommitLogCheckpointRoot.loadRoot().getLastWrittenTime();
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if (isBeforeOrAt(checkpoint.getCheckpointTime(), lastWrittenTime)) {
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logger.info("Newer checkpoint already written at time: " + lastWrittenTime);
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return;
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}
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ofy().saveWithoutBackup().entities(
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checkpoint,
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CommitLogCheckpointRoot.create(checkpoint.getCheckpointTime()));
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// Enqueue a diff task between previous and current checkpoints.
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taskEnqueuer.enqueue(
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getQueue(QUEUE_NAME),
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withUrl(ExportCommitLogDiffAction.PATH)
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.param(LOWER_CHECKPOINT_TIME_PARAM, lastWrittenTime.toString())
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.param(UPPER_CHECKPOINT_TIME_PARAM, checkpoint.getCheckpointTime().toString()));
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}});
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}
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}
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