a3b587c0ce
This refactoring forces callers to think about how to handle projects that do not exist explicitly. As a general guidance, API handlers will want to throw a BadRequestException and components in the inner works of Gerrit where content should have been pre-validated should throw an IllegalStateException. But overall, it's a case-by-case decision. In a follow-up commit, we will remove #checkedGet and move callers to get instead. Change-Id: I95bbc22ad5f3279e6f40f1d05c8d7235d601e32d
86 lines
3.3 KiB
Java
86 lines
3.3 KiB
Java
// Copyright (C) 2014 The Android Open Source Project
|
|
//
|
|
// 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.gerrit.server.project;
|
|
|
|
import com.google.common.flogger.FluentLogger;
|
|
import com.google.common.util.concurrent.ThreadFactoryBuilder;
|
|
import com.google.gerrit.entities.Project;
|
|
import com.google.gerrit.extensions.events.LifecycleListener;
|
|
import com.google.gerrit.server.config.GerritServerConfig;
|
|
import com.google.gerrit.server.logging.LoggingContextAwareExecutorService;
|
|
import com.google.inject.Inject;
|
|
import com.google.inject.Singleton;
|
|
import java.util.concurrent.ExecutorService;
|
|
import java.util.concurrent.ScheduledThreadPoolExecutor;
|
|
import java.util.concurrent.TimeUnit;
|
|
import org.eclipse.jgit.lib.Config;
|
|
|
|
@Singleton
|
|
public class ProjectCacheWarmer implements LifecycleListener {
|
|
private static final FluentLogger logger = FluentLogger.forEnclosingClass();
|
|
|
|
private final Config config;
|
|
private final ProjectCache cache;
|
|
|
|
@Inject
|
|
ProjectCacheWarmer(@GerritServerConfig Config config, ProjectCache cache) {
|
|
this.config = config;
|
|
this.cache = cache;
|
|
}
|
|
|
|
@Override
|
|
public void start() {
|
|
int cpus = Runtime.getRuntime().availableProcessors();
|
|
if (config.getBoolean("cache", "projects", "loadOnStartup", false)) {
|
|
ExecutorService pool =
|
|
new LoggingContextAwareExecutorService(
|
|
new ScheduledThreadPoolExecutor(
|
|
config.getInt("cache", "projects", "loadThreads", cpus),
|
|
new ThreadFactoryBuilder().setNameFormat("ProjectCacheLoader-%d").build()));
|
|
Thread scheduler =
|
|
new Thread(
|
|
() -> {
|
|
for (Project.NameKey name : cache.all()) {
|
|
pool.execute(
|
|
() ->
|
|
cache
|
|
.get(name)
|
|
.orElseThrow(
|
|
() ->
|
|
new IllegalStateException(
|
|
"race while traversing projects. got "
|
|
+ name
|
|
+ " when loading all projects, but can't load it now")));
|
|
}
|
|
pool.shutdown();
|
|
try {
|
|
pool.awaitTermination(Long.MAX_VALUE, TimeUnit.MILLISECONDS);
|
|
logger.atInfo().log("Finished loading project cache");
|
|
} catch (InterruptedException e) {
|
|
logger.atWarning().log("Interrupted while waiting for project cache to load");
|
|
}
|
|
});
|
|
scheduler.setName("ProjectCacheWarmer");
|
|
scheduler.setDaemon(true);
|
|
|
|
logger.atInfo().log("Loading project cache");
|
|
scheduler.start();
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void stop() {}
|
|
}
|