| // Copyright (C) 2017 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.googlesource.gerrit.plugins.webhooks; |
| |
| import com.google.common.base.Supplier; |
| import com.google.common.base.Suppliers; |
| import com.google.common.flogger.FluentLogger; |
| import com.google.gerrit.server.events.ProjectEvent; |
| import com.google.inject.assistedinject.Assisted; |
| import com.google.inject.assistedinject.AssistedInject; |
| import com.googlesource.gerrit.plugins.webhooks.HttpResponseHandler.HttpResult; |
| import java.io.IOException; |
| import java.util.Optional; |
| import java.util.concurrent.ScheduledExecutorService; |
| import java.util.concurrent.ScheduledFuture; |
| import java.util.concurrent.TimeUnit; |
| import javax.net.ssl.SSLException; |
| |
| class PostTask implements Runnable { |
| private static final FluentLogger log = FluentLogger.forEnclosingClass(); |
| |
| interface Factory { |
| PostTask create(ProjectEvent event, RemoteConfig remote); |
| } |
| |
| private final ScheduledExecutorService executor; |
| private final Supplier<HttpSession> session; |
| private final RemoteConfig remote; |
| private final ProjectEvent event; |
| private final Supplier<Optional<EventProcessor.Request>> processor; |
| private int execCnt; |
| |
| @AssistedInject |
| public PostTask( |
| @WebHooksExecutor ScheduledExecutorService executor, |
| HttpSession.Factory session, |
| EventProcessor processor, |
| @Assisted ProjectEvent event, |
| @Assisted RemoteConfig remote) { |
| this.executor = executor; |
| this.event = event; |
| this.remote = remote; |
| // postpone creation of HttpSession so that it is obtained only when processor |
| // returns non-empty content |
| this.session = Suppliers.memoize(() -> session.create(remote)); |
| this.processor = Suppliers.memoize(() -> processor.process(event, remote)); |
| } |
| |
| void schedule() { |
| executor.execute(this); |
| } |
| |
| private void reschedule() { |
| @SuppressWarnings("unused") |
| ScheduledFuture<?> ignored = |
| executor.schedule(this, remote.getRetryInterval(), TimeUnit.MILLISECONDS); |
| } |
| |
| @Override |
| public void run() { |
| try { |
| Optional<EventProcessor.Request> content = processor.get(); |
| if (!content.isPresent()) { |
| log.atFine().log("No content. Webhook [%s] skipped.", remote.getUrl()); |
| return; |
| } |
| |
| execCnt++; |
| HttpResult result = session.get().post(remote, content.get()); |
| if (!result.successful && execCnt < remote.getMaxTries()) { |
| logRetry(result.message); |
| reschedule(); |
| } |
| } catch (Throwable e) { |
| if (isRecoverable(e) && execCnt < remote.getMaxTries()) { |
| logRetry(e); |
| reschedule(); |
| } else { |
| log.atSevere().withCause(e).log("Failed to post: %s", toString()); |
| } |
| } |
| } |
| |
| private boolean isRecoverable(Throwable e) { |
| return (e instanceof IOException) && !(e instanceof SSLException); |
| } |
| |
| private void logRetry(String reason) { |
| log.atFine().log( |
| "Retrying %s in %dms. Reason: %s", toString(), remote.getRetryInterval(), reason); |
| } |
| |
| private void logRetry(Throwable cause) { |
| log.atFine().withCause(cause).log("Retrying %s in %dms", toString(), remote.getRetryInterval()); |
| } |
| |
| @Override |
| public String toString() { |
| return new StringBuilder() |
| .append("Processing event: ") |
| .append(event.getType()) |
| .append(" for project: ") |
| .append(event.getProjectNameKey().get()) |
| .append(" for remote: ") |
| .append(remote.getUrl()) |
| .toString(); |
| } |
| } |