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This file is part of Lilith. It contains the classic encoder.

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/*
 * Lilith - a log event viewer.
 * Copyright (C) 2007-2011 Joern Huxhorn
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see .
 */

/*
 * Copyright 2007-2011 Joern Huxhorn
 *
 * 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 de.huxhorn.lilith.logback.encoder;

import ch.qos.logback.classic.spi.ILoggingEvent;
import ch.qos.logback.core.recovery.ResilientFileOutputStream;
import de.huxhorn.lilith.api.FileConstants;

import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;

public class ClassicLilithEncoder
	extends LilithEncoderBase
{
	private boolean includeCallerData;
	private WrappingClassicEncoder wrappingEncoder;

	public ClassicLilithEncoder()
	{
		wrappingEncoder = new WrappingClassicEncoder();
		encoder=wrappingEncoder;
	}

	public boolean isIncludeCallerData()
	{
		return includeCallerData;
	}

	public void setIncludeCallerData(boolean includeCallerData)
	{
		this.includeCallerData = includeCallerData;
	}

	@Override
	public void init(OutputStream os) throws IOException
	{
		super.init(os);
		if(os instanceof ResilientFileOutputStream)
		{
			ResilientFileOutputStream rfos = (ResilientFileOutputStream) os;
			File file = rfos.getFile();
			if(file.length() == 0)
			{
				// write header
				Map metaDataMap = new HashMap<>();
				metaDataMap.put(FileConstants.CONTENT_TYPE_KEY, FileConstants.CONTENT_TYPE_VALUE_LOGGING);
				metaDataMap.put(FileConstants.CONTENT_FORMAT_KEY, FileConstants.CONTENT_FORMAT_VALUE_PROTOBUF);
				metaDataMap.put(FileConstants.COMPRESSION_KEY, FileConstants.COMPRESSION_VALUE_GZIP);
				writeHeader(metaDataMap);
			}
		}
		else
		{
			throw new IOException("OutputStream wasn't instanceof ResilientFileOutputStream! "+os);
		}
		wrappingEncoder.reset();
	}

	@Override
	protected void preProcess(ILoggingEvent event)
	{
		if(event != null)
		{
			if(includeCallerData)
			{
				event.getCallerData();
			}
		}
	}
}