de.schlichtherle.truezip.fs.inst.jul.JulInputStream Maven / Gradle / Ivy

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This module provides a file system manager and an I/O pool service for managing and monitoring TrueZIP via JMX and java.util.logging. Add the JAR artifact of this module to the run time class path to make its services available for service location in the client API modules.

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/*
 * Copyright (C) 2005-2015 Schlichtherle IT Services.
 * All rights reserved. Use is subject to license terms.
 */
package de.schlichtherle.truezip.fs.inst.jul;

import de.schlichtherle.truezip.entry.Entry;
import de.schlichtherle.truezip.io.DecoratingInputStream;
import de.schlichtherle.truezip.socket.IOPool;
import de.schlichtherle.truezip.socket.InputSocket;
import edu.umd.cs.findbugs.annotations.CreatesObligation;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.annotation.concurrent.Immutable;

/**
 * @author  Christian Schlichtherle
 */
@Immutable
final class JulInputStream
extends DecoratingInputStream {
    private static final Logger
            logger = Logger.getLogger(JulInputStream.class.getName());

    private final Entry target;

    @CreatesObligation
    @edu.umd.cs.findbugs.annotations.SuppressWarnings("OBL_UNSATISFIED_OBLIGATION")
    JulInputStream(final InputSocket socket) throws IOException {
        this(socket, socket.getLocalTarget());
    }

    @CreatesObligation
    @edu.umd.cs.findbugs.annotations.SuppressWarnings("OBL_UNSATISFIED_OBLIGATION")
    private JulInputStream(final InputSocket socket, final Entry target)
    throws IOException {
        super(socket.newInputStream());
        this.target = target;
        Level level = target instanceof IOPool.Entry ? Level.FINER : Level.FINEST;
        logger.log(level, "Stream reading " + target, new NeverThrowable());
    }

    @Override
    public void close() throws IOException {
        try {
            delegate.close();
        } finally {
            Level level = target instanceof IOPool.Entry ? Level.FINER : Level.FINEST;
            logger.log(level, "Closed " + target, new NeverThrowable());
        }
    }
}