apurtell commented on a change in pull request #3244: URL: https://github.com/apache/hbase/pull/3244#discussion_r634840283
########## File path: hbase-common/src/main/java/org/apache/hadoop/hbase/io/DelegatingInputStream.java ########## @@ -0,0 +1,99 @@ +/** + * 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.hbase.io; + +import java.io.IOException; +import java.io.InputStream; + +import org.apache.yetus.audience.InterfaceAudience; +import org.apache.yetus.audience.InterfaceStability; + +/** + * An input stream that delegates all operations to another input stream. + * The delegate can be switched out for another at any time but to minimize the + * possibility of violating the InputStream contract it would be best to replace + * the delegate only once it has been fully consumed. <p> For example, a + * ByteArrayInputStream, which is implicitly bounded by the size of the underlying + * byte array can be converted into an unbounded stream fed by multiple instances + * of ByteArrayInputStream, switched out one for the other in sequence. + */ [email protected] [email protected] +public class DelegatingInputStream extends InputStream { + + InputStream lowerStream; + + public DelegatingInputStream(InputStream lowerStream) { + this.lowerStream = lowerStream; + } + + public InputStream getDelegate() { + return lowerStream; + } + + public void setDelegate(InputStream lowerStream) { + this.lowerStream = lowerStream; + } + + @Override + public int read() throws IOException { + return lowerStream.read(); + } + + @Override + public int read(byte[] b) throws IOException { + return lowerStream.read(b); + } + + @Override + public int read(byte[] b, int off, int len) throws IOException { + return lowerStream.read(b, off, len); + } + + @Override + public long skip(long n) throws IOException { + return lowerStream.skip(n); + } + + @Override + public int available() throws IOException { + return lowerStream.available(); + } + + @Override + public void close() throws IOException { + lowerStream.close(); + } + + @Override + public synchronized void mark(int readlimit) { + lowerStream.mark(readlimit); + } + + @Override + public synchronized void reset() throws IOException { + lowerStream.reset(); + } + + @Override + public boolean markSupported() { Review comment: Did not know about it but I'm good with what I've done here. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
