google-nomulus/java/google/registry/flows/async/AsyncFlowEnqueuer.java
mcilwain d853e59c7f Cut over to batched DNS refreshing on host renames
TESTED=I deployed it on alpha, renamed some hosts, and verified that
the [] ran as expected.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=134991941
2016-10-03 16:42:24 -04:00

87 lines
3.8 KiB
Java

// 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.flows.async;
import static google.registry.flows.async.DeleteContactsAndHostsAction.PARAM_IS_SUPERUSER;
import static google.registry.flows.async.DeleteContactsAndHostsAction.PARAM_REQUESTING_CLIENT_ID;
import static google.registry.flows.async.DeleteContactsAndHostsAction.PARAM_RESOURCE_KEY;
import static google.registry.flows.async.DnsRefreshForHostRenameAction.PARAM_HOST_KEY;
import static google.registry.flows.async.RefreshDnsOnHostRenameAction.QUEUE_ASYNC_HOST_RENAME;
import com.google.appengine.api.taskqueue.Queue;
import com.google.appengine.api.taskqueue.TaskOptions;
import com.google.appengine.api.taskqueue.TaskOptions.Method;
import com.google.appengine.api.taskqueue.TransientFailureException;
import com.googlecode.objectify.Key;
import google.registry.config.ConfigModule.Config;
import google.registry.model.EppResource;
import google.registry.model.host.HostResource;
import google.registry.util.FormattingLogger;
import google.registry.util.Retrier;
import java.util.concurrent.Callable;
import javax.inject.Inject;
import javax.inject.Named;
import org.joda.time.Duration;
/** Helper class to enqueue tasks for handling asynchronous operations in flows. */
public final class AsyncFlowEnqueuer {
private static final FormattingLogger logger = FormattingLogger.getLoggerForCallerClass();
@Inject @Config("asyncDeleteFlowMapreduceDelay") Duration asyncDeleteDelay;
@Inject @Named("async-delete-pull") Queue asyncDeletePullQueue;
@Inject @Named(QUEUE_ASYNC_HOST_RENAME) Queue asyncDnsRefreshPullQueue;
@Inject Retrier retrier;
@Inject AsyncFlowEnqueuer() {}
/** Enqueues a task to asynchronously delete a contact or host, by key. */
public void enqueueAsyncDelete(
EppResource resourceToDelete, String requestingClientId, boolean isSuperuser) {
Key<EppResource> resourceKey = Key.create(resourceToDelete);
logger.infofmt(
"Enqueuing async deletion of %s on behalf of registrar %s.",
resourceKey, requestingClientId);
TaskOptions task =
TaskOptions.Builder
.withMethod(Method.PULL)
.countdownMillis(asyncDeleteDelay.getMillis())
.param(PARAM_RESOURCE_KEY, resourceKey.getString())
.param(PARAM_REQUESTING_CLIENT_ID, requestingClientId)
.param(PARAM_IS_SUPERUSER, Boolean.toString(isSuperuser));
addTaskToQueueWithRetry(asyncDeletePullQueue, task);
}
/** Enqueues a task to asynchronously refresh DNS for a renamed host. */
public void enqueueAsyncDnsRefresh(HostResource host) {
Key<HostResource> hostKey = Key.create(host);
logger.infofmt("Enqueuing async DNS refresh for renamed host %s.", hostKey);
addTaskToQueueWithRetry(
asyncDnsRefreshPullQueue,
TaskOptions.Builder.withMethod(Method.PULL).param(PARAM_HOST_KEY, hostKey.getString()));
}
/**
* Adds a task to a queue with retrying, to avoid aborting the entire flow over a transient issue
* enqueuing a task.
*/
private void addTaskToQueueWithRetry(final Queue queue, final TaskOptions task) {
retrier.callWithRetry(new Callable<Void>() {
@Override
public Void call() throws Exception {
queue.add(task);
return null;
}}, TransientFailureException.class);
}
}