| /* |
| * Copyright (C) 2019 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.android.tradefed.cluster; |
| |
| import com.android.tradefed.log.LogUtil.CLog; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Queue; |
| import java.util.concurrent.ConcurrentLinkedQueue; |
| |
| /** ClusterEventUploader class, which uploads {@link IClusterEvent} to TFC. */ |
| public abstract class ClusterEventUploader<T extends IClusterEvent> |
| implements IClusterEventUploader<T> { |
| |
| // Default maximum event batch size |
| private static final int DEFAULT_MAX_BATCH_SIZE = 200; |
| |
| // Default event upload interval in ms. |
| private static final long DEFAULT_EVENT_UPLOAD_INTERVAL = 60 * 1000; |
| |
| private int mMaxBatchSize = DEFAULT_MAX_BATCH_SIZE; |
| private long mEventUploadInterval = DEFAULT_EVENT_UPLOAD_INTERVAL; |
| private long mLastEventUploadTime = 0; |
| private Queue<T> mEventQueue = new ConcurrentLinkedQueue<T>(); |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void setMaxBatchSize(int batchSize) { |
| mMaxBatchSize = batchSize; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public int getMaxBatchSize() { |
| return mMaxBatchSize; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void setEventUploadInterval(long interval) { |
| mEventUploadInterval = interval; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public long getEventUploadInterval() { |
| return mEventUploadInterval; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void postEvent(final T event) { |
| mEventQueue.add(event); |
| uploadEvents(false); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void flush() { |
| uploadEvents(true); |
| } |
| |
| /** |
| * Upload events. |
| * |
| * @param uploadNow upload now or wait for uploading with other events. |
| */ |
| private void uploadEvents(final boolean uploadNow) { |
| final long now = System.currentTimeMillis(); |
| if (!uploadNow && now - mLastEventUploadTime < getEventUploadInterval()) { |
| return; |
| } |
| uploadEvents(); |
| } |
| |
| /** Synchronized actually upload events. Only one thread will upload the events. */ |
| private synchronized void uploadEvents() { |
| // Tradefed Cluster is unable to process command events larger than 100 KiB (b/72104215). |
| // The ClusterCommandEvent Builder provides some protection against this by limiting data |
| // fields to 1 KiB, but the number of data fields is not bounded, so we're not entirely |
| // protected against this. |
| |
| mLastEventUploadTime = System.currentTimeMillis(); |
| List<T> events = new ArrayList<T>(); |
| try { |
| // Upload batches of events until there are no more left |
| while (!mEventQueue.isEmpty()) { |
| // Limit the number of events to upload at once |
| int batchSize = getMaxBatchSize(); |
| while (!mEventQueue.isEmpty() && events.size() < batchSize) { |
| events.add(mEventQueue.poll()); |
| } |
| doUploadEvents(events); |
| events.clear(); |
| } |
| } catch (IOException e) { |
| CLog.w("failed to upload events: %s", e); |
| CLog.w("events will be uploaded with the next event."); |
| mEventQueue.addAll(events); |
| } |
| } |
| |
| protected abstract void doUploadEvents(List<T> events) throws IOException; |
| } |