| using System; |
| using System.Runtime.CompilerServices; |
| |
| namespace Lucene.Net.Store |
| { |
| /* |
| * 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> |
| /// A rate limiting (<see cref="RateLimiter"/>) <see cref="IndexOutput"/> |
| /// <para/> |
| /// @lucene.internal |
| /// </summary> |
| internal sealed class RateLimitedIndexOutput : BufferedIndexOutput |
| { |
| private readonly IndexOutput @delegate; |
| private readonly BufferedIndexOutput bufferedDelegate; |
| private readonly RateLimiter rateLimiter; |
| |
| internal RateLimitedIndexOutput(RateLimiter rateLimiter, IndexOutput @delegate) |
| { |
| // TODO should we make buffer size configurable |
| if (@delegate is BufferedIndexOutput) |
| { |
| bufferedDelegate = (BufferedIndexOutput)@delegate; |
| this.@delegate = @delegate; |
| } |
| else |
| { |
| this.@delegate = @delegate; |
| bufferedDelegate = null; |
| } |
| this.rateLimiter = rateLimiter; |
| } |
| |
| protected internal override void FlushBuffer(byte[] b, int offset, int len) |
| { |
| rateLimiter.Pause(len); |
| if (bufferedDelegate != null) |
| { |
| bufferedDelegate.FlushBuffer(b, offset, len); |
| } |
| else |
| { |
| @delegate.WriteBytes(b, offset, len); |
| } |
| } |
| |
| public override long Length |
| { |
| get => @delegate.Length; |
| set |
| { |
| } |
| } |
| |
| [Obsolete("(4.1) this method will be removed in Lucene 5.0")] |
| public override void Seek(long pos) |
| { |
| Flush(); |
| @delegate.Seek(pos); |
| } |
| |
| [MethodImpl(MethodImplOptions.NoInlining)] |
| public override void Flush() |
| { |
| try |
| { |
| base.Flush(); |
| } |
| finally |
| { |
| @delegate.Flush(); |
| } |
| } |
| |
| protected override void Dispose(bool disposing) |
| { |
| if (disposing) |
| { |
| try |
| { |
| base.Dispose(disposing); |
| } |
| finally |
| { |
| @delegate.Dispose(); |
| } |
| } |
| } |
| } |
| } |