| // 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.doris.flink.sink.batch; |
| |
| import org.apache.flink.annotation.VisibleForTesting; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.nio.ByteBuffer; |
| |
| |
| /** |
| * buffer to queue |
| */ |
| public class BatchRecordBuffer { |
| private static final Logger LOG = LoggerFactory.getLogger(BatchRecordBuffer.class); |
| public static final String LINE_SEPARATOR = "\n"; |
| private String labelName; |
| private ByteBuffer buffer; |
| private byte[] lineDelimiter; |
| private int numOfRecords = 0; |
| private int bufferSizeBytes = 0; |
| private boolean loadBatchFirstRecord = true; |
| private String database; |
| private String table; |
| |
| public BatchRecordBuffer(){} |
| |
| public BatchRecordBuffer(byte[] lineDelimiter, int bufferSize) { |
| super(); |
| this.lineDelimiter = lineDelimiter; |
| this.buffer = ByteBuffer.allocate(bufferSize); |
| } |
| |
| public BatchRecordBuffer(String database, String table, byte[] lineDelimiter, int bufferSize) { |
| super(); |
| this.database = database; |
| this.table = table; |
| this.lineDelimiter = lineDelimiter; |
| this.buffer = ByteBuffer.allocate(bufferSize); |
| } |
| |
| public void insert(byte[] record) { |
| ensureCapacity(record.length); |
| if(loadBatchFirstRecord){ |
| loadBatchFirstRecord = false; |
| } else { |
| this.buffer.put(this.lineDelimiter); |
| } |
| this.buffer.put(record); |
| setNumOfRecords(getNumOfRecords() + 1); |
| setBufferSizeBytes(getBufferSizeBytes() + record.length); |
| } |
| |
| @VisibleForTesting |
| public void ensureCapacity(int length) { |
| int lineDelimiterSize = this.lineDelimiter.length; |
| if(buffer.remaining() - lineDelimiterSize >= length){ |
| return; |
| } |
| int currentRemain = buffer.remaining(); |
| int currentCapacity = buffer.capacity(); |
| // add lineDelimiter length |
| int needed = length - buffer.remaining() + lineDelimiterSize; |
| // grow at least 1MB |
| long grow = Math.max(needed, 1024 * 1024); |
| // grow at least 50% of the current size |
| grow = Math.max(buffer.capacity() / 2, grow); |
| int newCapacity = (int) Math.min(Integer.MAX_VALUE, buffer.capacity() + grow); |
| ByteBuffer tmp = ByteBuffer.allocate(newCapacity); |
| buffer.flip(); |
| tmp.put(buffer); |
| buffer.clear(); |
| buffer = tmp; |
| LOG.info("record length {},buffer remain {} ,grow capacity {} to {}", length, currentRemain, currentCapacity, newCapacity); |
| } |
| |
| public String getLabelName() { |
| return labelName; |
| } |
| |
| public void setLabelName(String labelName) { |
| this.labelName = labelName; |
| } |
| |
| /** |
| * @return true if buffer is empty |
| */ |
| public boolean isEmpty() { |
| return numOfRecords == 0; |
| } |
| |
| public ByteBuffer getData() { |
| //change mode |
| buffer.flip(); |
| LOG.debug("flush buffer: {} records, {} bytes",getNumOfRecords(),getBufferSizeBytes()); |
| return buffer; |
| } |
| |
| public void clear(){ |
| this.buffer.clear(); |
| this.numOfRecords = 0; |
| this.bufferSizeBytes = 0; |
| this.labelName = null; |
| this.loadBatchFirstRecord = true; |
| } |
| |
| public ByteBuffer getBuffer(){ |
| return buffer; |
| } |
| /** |
| * @return Number of records in this buffer |
| */ |
| public int getNumOfRecords() { |
| return numOfRecords; |
| } |
| |
| /** |
| * @return Buffer size in bytes |
| */ |
| public int getBufferSizeBytes() { |
| return bufferSizeBytes; |
| } |
| |
| /** |
| * @param numOfRecords Updates number of records (Usually by 1) |
| */ |
| public void setNumOfRecords(int numOfRecords) { |
| this.numOfRecords = numOfRecords; |
| } |
| |
| /** |
| * @param bufferSizeBytes Updates sum of size of records present in this buffer (Bytes) |
| */ |
| public void setBufferSizeBytes(int bufferSizeBytes) { |
| this.bufferSizeBytes = bufferSizeBytes; |
| } |
| |
| public String getDatabase() { |
| return database; |
| } |
| |
| public void setDatabase(String database) { |
| this.database = database; |
| } |
| |
| public String getTable() { |
| return table; |
| } |
| |
| public void setTable(String table) { |
| this.table = table; |
| } |
| } |