| /* |
| * 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.cassandra.io.util; |
| |
| import java.io.DataInput; |
| import java.io.DataInputStream; |
| import java.io.IOException; |
| |
| /** |
| * This class is to track bytes read from given DataInput |
| */ |
| public class TrackedDataInputPlus implements DataInputPlus, BytesReadTracker |
| { |
| private long bytesRead; |
| final DataInput source; |
| |
| public TrackedDataInputPlus(DataInput source) |
| { |
| this.source = source; |
| } |
| |
| public long getBytesRead() |
| { |
| return bytesRead; |
| } |
| |
| /** |
| * reset counter to @param count |
| */ |
| public void reset(long count) |
| { |
| bytesRead = count; |
| } |
| |
| public boolean readBoolean() throws IOException |
| { |
| boolean bool = source.readBoolean(); |
| bytesRead += 1; |
| return bool; |
| } |
| |
| public byte readByte() throws IOException |
| { |
| byte b = source.readByte(); |
| bytesRead += 1; |
| return b; |
| } |
| |
| public char readChar() throws IOException |
| { |
| char c = source.readChar(); |
| bytesRead += 2; |
| return c; |
| } |
| |
| public double readDouble() throws IOException |
| { |
| double d = source.readDouble(); |
| bytesRead += 8; |
| return d; |
| } |
| |
| public float readFloat() throws IOException |
| { |
| float f = source.readFloat(); |
| bytesRead += 4; |
| return f; |
| } |
| |
| public void readFully(byte[] b, int off, int len) throws IOException |
| { |
| source.readFully(b, off, len); |
| bytesRead += len; |
| } |
| |
| public void readFully(byte[] b) throws IOException |
| { |
| source.readFully(b); |
| bytesRead += b.length; |
| } |
| |
| public int readInt() throws IOException |
| { |
| int i = source.readInt(); |
| bytesRead += 4; |
| return i; |
| } |
| |
| public String readLine() throws IOException |
| { |
| // since this method is deprecated and cannot track bytes read |
| // just throw exception |
| throw new UnsupportedOperationException(); |
| } |
| |
| public long readLong() throws IOException |
| { |
| long l = source.readLong(); |
| bytesRead += 8; |
| return l; |
| } |
| |
| public short readShort() throws IOException |
| { |
| short s = source.readShort(); |
| bytesRead += 2; |
| return s; |
| } |
| |
| public String readUTF() throws IOException |
| { |
| return DataInputStream.readUTF(this); |
| } |
| |
| public int readUnsignedByte() throws IOException |
| { |
| int i = source.readUnsignedByte(); |
| bytesRead += 1; |
| return i; |
| } |
| |
| public int readUnsignedShort() throws IOException |
| { |
| int i = source.readUnsignedShort(); |
| bytesRead += 2; |
| return i; |
| } |
| |
| public int skipBytes(int n) throws IOException |
| { |
| int skipped = source.skipBytes(n); |
| bytesRead += skipped; |
| return skipped; |
| } |
| } |