google-nomulus/java/google/registry/tools/server/KillAllCommitLogsAction.java
mcilwain 765e63e7e9 Send a plaintext link to the mapreduce console in fluent style
The link was previously being sent using a JS redirect, which doesn't work
because the endpoints that trigger mapreduces can only be hit from the command
line (because they require auth). This commit switches the link to be in
plaintext and renders the full URL instead of just the path, so that clicking it
directly from the terminal works.

This also improves how these links are sent from callsites by using a fluent
style.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=228764606
2019-01-10 17:14:06 -05:00

109 lines
4.1 KiB
Java

// 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.tools.server;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.collect.ImmutableList.toImmutableList;
import static google.registry.model.ofy.ObjectifyService.ofy;
import static google.registry.request.Action.Method.POST;
import com.google.appengine.tools.mapreduce.Input;
import com.google.appengine.tools.mapreduce.Mapper;
import com.google.appengine.tools.mapreduce.inputs.InMemoryInput;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Lists;
import com.google.common.collect.Streams;
import com.googlecode.objectify.Key;
import google.registry.config.RegistryEnvironment;
import google.registry.mapreduce.MapreduceRunner;
import google.registry.model.ofy.CommitLogBucket;
import google.registry.model.ofy.CommitLogCheckpointRoot;
import google.registry.request.Action;
import google.registry.request.Response;
import google.registry.request.auth.Auth;
import java.util.stream.Stream;
import javax.inject.Inject;
/**
* Deletes all commit logs in Datastore.
*
* <p>Because there are no auth settings in the {@link Action} annotation, this command can only be
* run internally, or by pretending to be internal by setting the X-AppEngine-QueueName header,
* which only admin users can do. That makes this command hard to use, which is appropriate, given
* the drastic consequences of accidental execution.
*/
@Action(
path = "/_dr/task/killAllCommitLogs",
method = POST,
auth = Auth.AUTH_INTERNAL_ONLY
)
public class KillAllCommitLogsAction implements Runnable {
@Inject MapreduceRunner mrRunner;
@Inject Response response;
@Inject KillAllCommitLogsAction() {}
@Override
public void run() {
checkArgument( // safety
RegistryEnvironment.get() == RegistryEnvironment.CRASH
|| RegistryEnvironment.get() == RegistryEnvironment.UNITTEST,
"DO NOT RUN ANYWHERE ELSE EXCEPT CRASH OR TESTS.");
// Create a in-memory input, assigning each bucket to its own shard for maximum parallelization,
// with one extra shard for the CommitLogCheckpointRoot.
Input<Key<?>> input =
new InMemoryInput<>(
Lists.partition(
Streams.concat(
Stream.of(CommitLogCheckpointRoot.getKey()),
CommitLogBucket.getAllBucketKeys().stream())
.collect(toImmutableList()),
1));
mrRunner
.setJobName("Delete all commit logs")
.setModuleName("tools")
.runMapreduce(
new KillAllCommitLogsMapper(), new KillAllEntitiesReducer(), ImmutableList.of(input))
.sendLinkToMapreduceConsole(response);
}
/**
* Mapper to delete a {@link CommitLogBucket} or {@link CommitLogCheckpointRoot} and any commit
* logs or checkpoints that descend from it.
*
* <p>This will delete:
* <ul>
* <li>{@link CommitLogBucket}
* <li>{@code CommitLogCheckpoint}
* <li>{@link CommitLogCheckpointRoot}
* <li>{@code CommitLogManifest}
* <li>{@code CommitLogMutation}
* </ul>
*/
static class KillAllCommitLogsMapper extends Mapper<Key<?>, Key<?>, Key<?>> {
private static final long serialVersionUID = 1504266335352952033L;
@Override
public void map(Key<?> bucketOrRoot) {
for (Key<Object> key : ofy().load().ancestor(bucketOrRoot).keys()) {
emit(bucketOrRoot, key);
getContext().incrementCounter("entities emitted");
getContext().incrementCounter(String.format("%s emitted", key.getKind()));
}
}
}
}