| /** |
| * 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. |
| */ |
| |
| package org.apache.hadoop.fs.azurebfs.services; |
| |
| import java.util.concurrent.CountDownLatch; |
| |
| import org.apache.hadoop.fs.azurebfs.contracts.services.ReadBufferStatus; |
| |
| class ReadBuffer { |
| |
| private AbfsInputStream stream; |
| private long offset; // offset within the file for the buffer |
| private int length; // actual length, set after the buffer is filles |
| private int requestedLength; // requested length of the read |
| private byte[] buffer; // the buffer itself |
| private int bufferindex = -1; // index in the buffers array in Buffer manager |
| private ReadBufferStatus status; // status of the buffer |
| private CountDownLatch latch = null; // signaled when the buffer is done reading, so any client |
| // waiting on this buffer gets unblocked |
| |
| // fields to help with eviction logic |
| private long timeStamp = 0; // tick at which buffer became available to read |
| private boolean isFirstByteConsumed = false; |
| private boolean isLastByteConsumed = false; |
| private boolean isAnyByteConsumed = false; |
| |
| public AbfsInputStream getStream() { |
| return stream; |
| } |
| |
| public void setStream(AbfsInputStream stream) { |
| this.stream = stream; |
| } |
| |
| public long getOffset() { |
| return offset; |
| } |
| |
| public void setOffset(long offset) { |
| this.offset = offset; |
| } |
| |
| public int getLength() { |
| return length; |
| } |
| |
| public void setLength(int length) { |
| this.length = length; |
| } |
| |
| public int getRequestedLength() { |
| return requestedLength; |
| } |
| |
| public void setRequestedLength(int requestedLength) { |
| this.requestedLength = requestedLength; |
| } |
| |
| public byte[] getBuffer() { |
| return buffer; |
| } |
| |
| public void setBuffer(byte[] buffer) { |
| this.buffer = buffer; |
| } |
| |
| public int getBufferindex() { |
| return bufferindex; |
| } |
| |
| public void setBufferindex(int bufferindex) { |
| this.bufferindex = bufferindex; |
| } |
| |
| public ReadBufferStatus getStatus() { |
| return status; |
| } |
| |
| public void setStatus(ReadBufferStatus status) { |
| this.status = status; |
| } |
| |
| public CountDownLatch getLatch() { |
| return latch; |
| } |
| |
| public void setLatch(CountDownLatch latch) { |
| this.latch = latch; |
| } |
| |
| public long getTimeStamp() { |
| return timeStamp; |
| } |
| |
| public void setTimeStamp(long timeStamp) { |
| this.timeStamp = timeStamp; |
| } |
| |
| public boolean isFirstByteConsumed() { |
| return isFirstByteConsumed; |
| } |
| |
| public void setFirstByteConsumed(boolean isFirstByteConsumed) { |
| this.isFirstByteConsumed = isFirstByteConsumed; |
| } |
| |
| public boolean isLastByteConsumed() { |
| return isLastByteConsumed; |
| } |
| |
| public void setLastByteConsumed(boolean isLastByteConsumed) { |
| this.isLastByteConsumed = isLastByteConsumed; |
| } |
| |
| public boolean isAnyByteConsumed() { |
| return isAnyByteConsumed; |
| } |
| |
| public void setAnyByteConsumed(boolean isAnyByteConsumed) { |
| this.isAnyByteConsumed = isAnyByteConsumed; |
| } |
| |
| } |