| /* |
| * 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.oodt.commons.io; |
| |
| //JDK imports |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.nio.CharBuffer; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| /** |
| * {@link OutputStream} wrapper around a java {@link Logger}. |
| * |
| * @author bfoster (Brian Foster) |
| */ |
| public class LoggerOutputStream extends OutputStream { |
| |
| public static final String NUM_BYTES_PER_WRITE_PROPERTY = |
| "org.apache.oodt.commons.io.logger.os.bytes.per.write"; |
| private static final int NUM_BYTES_PER_WRITE = Integer.getInteger( |
| NUM_BYTES_PER_WRITE_PROPERTY, 512); |
| |
| private Logger logger; |
| private CharBuffer buffer; |
| private Level logLevel; |
| |
| public LoggerOutputStream(Logger logger) throws InstantiationException { |
| this(logger, Level.INFO); |
| } |
| |
| public LoggerOutputStream(Logger logger, Level logLevel) |
| throws InstantiationException { |
| this(logger, NUM_BYTES_PER_WRITE, logLevel); |
| } |
| |
| public LoggerOutputStream(Logger logger, int numOfBytesPerWrite) |
| throws InstantiationException { |
| this(logger, numOfBytesPerWrite, Level.INFO); |
| } |
| |
| public LoggerOutputStream(Logger logger, int numOfBytesPerWrite, |
| Level logLevel) throws InstantiationException { |
| this.logger = logger; |
| this.buffer = CharBuffer.wrap(new char[numOfBytesPerWrite]); |
| this.logLevel = logLevel; |
| } |
| |
| @Override |
| public void write(int b) throws IOException { |
| if (!buffer.hasRemaining()) { |
| flush(); |
| } |
| buffer.put((char) b); |
| } |
| |
| @Override |
| public void flush() { |
| if (buffer.position() > 0) { |
| char[] flushContext = new char[buffer.position()]; |
| System.arraycopy(buffer.array(), 0, flushContext, 0, buffer.position()); |
| logger.log(logLevel, new String(flushContext)); |
| buffer.clear(); |
| } |
| } |
| |
| @Override |
| public void close() throws IOException { |
| flush(); |
| super.close(); |
| } |
| } |