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/*
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 * Licensed to the Apache Software Foundation (ASF) under one
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 * or more contributor license agreements.  See the NOTICE file
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 * distributed with this work for additional information
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 * regarding copyright ownership.  The ASF licenses this file
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 * to you under the Apache License, Version 2.0 (the
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 * "License"); you may not use this file except in compliance
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 * with the License.  You may obtain a copy of the License at
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 *
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 *   http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing,
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 * software distributed under the License is distributed on an
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 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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 * KIND, either express or implied.  See the License for the
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 * specific language governing permissions and limitations
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 * under the License.
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 */
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package org.apache.sshd.common.util;
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import java.io.FilterOutputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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import org.slf4j.Logger;
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/**
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 * TODO Add javadoc
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 *
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 * @author <a href="mailto:dev@mina.apache.org">Apache MINA SSHD Project</a>
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 */
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public class LoggingFilterOutputStream extends FilterOutputStream {
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    private final String msg;
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    private final Logger log;
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    public LoggingFilterOutputStream(OutputStream out, String msg, Logger log) {
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        super(out);
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        this.msg = msg;
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        this.log = log;
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    }
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    @Override
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    public void write(int b) throws IOException {
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            byte[] d = new byte[1];
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        d[0] = (byte) b;
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        write(d, 0, 1);
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    }
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    @Override
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    public void write(byte[] b, int off, int len) throws IOException {
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        if (log != null && log.isTraceEnabled()) {
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            log.trace("{} {}", msg, BufferUtils.printHex(b, off, len));
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        }
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        out.write(b, off, len);
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    }
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}