edu.unc.lib.dl.cdr.sword.server.MethodAwareInputStream.java Source code

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Here is the source code for edu.unc.lib.dl.cdr.sword.server.MethodAwareInputStream.java

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/**
 * Copyright 2008 The University of North Carolina at Chapel Hill
 *
 * Licensed 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 edu.unc.lib.dl.cdr.sword.server;

import java.io.IOException;
import java.io.InputStream;

import org.apache.commons.httpclient.HttpMethodBase;
import org.apache.log4j.Logger;

/**
 * Input stream wrapper class for streams that originated from a HttpMethod which could not be closed at the time of
 * reading.
 * 
 * @author bbpennel
 * 
 */
public class MethodAwareInputStream extends InputStream {
    private static Logger log = Logger.getLogger(MethodAwareInputStream.class);

    private HttpMethodBase method;
    private InputStream originalStream;

    public MethodAwareInputStream(HttpMethodBase method) throws IOException {
        this.originalStream = method.getResponseBodyAsStream();
        this.method = method;
    }

    @Override
    public int read() throws IOException {
        return originalStream.read();
    }

    public void close() {
        if (method != null) {
            method.releaseConnection();
        } else if (originalStream != null) {
            try {
                originalStream.close();
            } catch (Exception e) {
                log.error("Failed to close original stream", e);
            }
        }
    }
}