| using Lucene.Net.Index; |
| using Lucene.Net.Util; |
| using System; |
| using System.Globalization; |
| using System.Threading; |
| using Console = Lucene.Net.Util.SystemConsole; |
| |
| namespace Lucene.Net.Benchmarks.ByTask.Tasks |
| { |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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. |
| */ |
| |
| /// <summary> |
| /// Spawns a BG thread that periodically (defaults to 3.0 |
| /// seconds, but accepts param in seconds) wakes up and asks |
| /// IndexWriter for a near real-time reader. Then runs a |
| /// single query (body: 1) sorted by docdate, and prints |
| /// time to reopen and time to run the search. |
| /// <para/> |
| /// @lucene.experimental It's also not generally usable, eg |
| /// you cannot change which query is executed. |
| /// </summary> |
| public class NearRealtimeReaderTask : PerfTask |
| { |
| internal long pauseMSec = 3000L; |
| |
| internal int reopenCount; |
| internal int[] reopenTimes = new int[1]; |
| |
| public NearRealtimeReaderTask(PerfRunData runData) |
| : base(runData) |
| { |
| } |
| |
| public override int DoLogic() |
| { |
| PerfRunData runData = RunData; |
| |
| // Get initial reader |
| IndexWriter w = runData.IndexWriter; |
| if (w == null) |
| { |
| throw new Exception("please open the writer before invoking NearRealtimeReader"); |
| } |
| |
| if (runData.GetIndexReader() != null) |
| { |
| throw new Exception("please close the existing reader before invoking NearRealtimeReader"); |
| } |
| |
| |
| long t = J2N.Time.CurrentTimeMilliseconds(); |
| DirectoryReader r = DirectoryReader.Open(w, true); |
| runData.SetIndexReader(r); |
| // Transfer our reference to runData |
| r.DecRef(); |
| |
| // TODO: gather basic metrics for reporting -- eg mean, |
| // stddev, min/max reopen latencies |
| |
| // Parent sequence sets stopNow |
| reopenCount = 0; |
| while (!Stop) |
| { |
| long waitForMsec = (pauseMSec - (J2N.Time.CurrentTimeMilliseconds() - t)); |
| if (waitForMsec > 0) |
| { |
| Thread.Sleep((int)waitForMsec); |
| //System.out.println("NRT wait: " + waitForMsec + " msec"); |
| } |
| |
| t = J2N.Time.CurrentTimeMilliseconds(); |
| DirectoryReader newReader = DirectoryReader.OpenIfChanged(r); |
| if (newReader != null) |
| { |
| int delay = (int)(J2N.Time.CurrentTimeMilliseconds() - t); |
| if (reopenTimes.Length == reopenCount) |
| { |
| reopenTimes = ArrayUtil.Grow(reopenTimes, 1 + reopenCount); |
| } |
| reopenTimes[reopenCount++] = delay; |
| // TODO: somehow we need to enable warming, here |
| runData.SetIndexReader(newReader); |
| // Transfer our reference to runData |
| newReader.DecRef(); |
| r = newReader; |
| } |
| } |
| Stop = false; |
| |
| return reopenCount; |
| } |
| |
| public override void SetParams(string @params) |
| { |
| base.SetParams(@params); |
| pauseMSec = (long)(1000.0 * float.Parse(@params, CultureInfo.InvariantCulture)); |
| } |
| |
| protected override void Dispose(bool disposing) |
| { |
| if (disposing) |
| { |
| Console.WriteLine("NRT reopen times:"); |
| for (int i = 0; i < reopenCount; i++) |
| { |
| Console.Write(" " + reopenTimes[i]); |
| } |
| Console.WriteLine(); |
| } |
| } |
| |
| public override bool SupportsParams => true; |
| } |
| } |