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/*
* 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.qpid.configuration;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.commons.cli.PosixParser;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
public class Configuration
{
public static final String QPID_HOME = "QPID_HOME";
final String QPIDHOME = System.getProperty(QPID_HOME);
private static Logger _devlog = LoggerFactory.getLogger(Configuration.class);
public static final String DEFAULT_LOG_CONFIG_FILENAME = "log4j.xml";
public static final String DEFAULT_CONFIG_FILE = "etc/config.xml";
protected final Options _options = new Options();
protected CommandLine _commandLine;
protected File _configFile;
public Configuration()
{
}
public void processCommandline(String[] args) throws InitException
{
try
{
_commandLine = new PosixParser().parse(_options, args);
}
catch (ParseException e)
{
throw new InitException("Unable to parse commmandline", e);
}
final File defaultConfigFile = new File(QPIDHOME, DEFAULT_CONFIG_FILE);
setConfig(new File(_commandLine.getOptionValue("c", defaultConfigFile.getPath())));
}
public void setConfig(File file)
{
_configFile = file;
}
/**
* @param option The option to set.
*/
public void setOption(Option option)
{
_options.addOption(option);
}
/**
* getOptionValue from the configuration
* @param option variable argument, first string is option to get, second if present is the default value.
* @return the String for the given option or null if not present (if default value not specified)
*/
public String getOptionValue(String... option)
{
if (option.length == 1)
{
return _commandLine.getOptionValue(option[0]);
}
else if (option.length == 2)
{
return _commandLine.getOptionValue(option[0], option[1]);
}
return null;
}
public void loadConfig(File file) throws InitException
{
setConfig(file);
loadConfig();
}
private void loadConfig() throws InitException
{
if (!_configFile.exists())
{
String error = "File " + _configFile + " could not be found. Check the file exists and is readable.";
if (QPIDHOME == null)
{
error = error + "\nNote: " + QPID_HOME + " is not set.";
}
throw new InitException(error, null);
}
else
{
_devlog.debug("Using configuration file " + _configFile.getAbsolutePath());
}
// String logConfig = _commandLine.getOptionValue("l");
// String logWatchConfig = _commandLine.getOptionValue("w", "0");
// if (logConfig != null)
// {
// File logConfigFile = new File(logConfig);
// configureLogging(logConfigFile, logWatchConfig);
// }
// else
// {
// File configFileDirectory = _configFile.getParentFile();
// File logConfigFile = new File(configFileDirectory, DEFAULT_LOG_CONFIG_FILENAME);
// configureLogging(logConfigFile, logWatchConfig);
// }
}
// private void configureLogging(File logConfigFile, String logWatchConfig)
// {
// int logWatchTime = 0;
// try
// {
// logWatchTime = Integer.parseInt(logWatchConfig);
// }
// catch (NumberFormatException e)
// {
// _devlog.error("Log watch configuration value of " + logWatchConfig + " is invalid. Must be "
// + "a non-negative integer. Using default of zero (no watching configured");
// }
//
// if (logConfigFile.exists() && logConfigFile.canRead())
// {
// _devlog.info("Configuring logger using configuration file " + logConfigFile.getAbsolutePath());
// if (logWatchTime > 0)
// {
// _devlog.info("log file " + logConfigFile.getAbsolutePath() + " will be checked for changes every "
// + logWatchTime + " seconds");
// // log4j expects the watch interval in milliseconds
// DOMConfigurator.configureAndWatch(logConfigFile.getAbsolutePath(), logWatchTime * 1000);
// }
// else
// {
// DOMConfigurator.configure(logConfigFile.getAbsolutePath());
// }
// }
// else
// {
// System.err.println("Logging configuration error: unable to read file " + logConfigFile.getAbsolutePath());
// System.err.println("Using basic log4j configuration");
// BasicConfigurator.configure();
// }
// }
public File getConfigFile()
{
return _configFile;
}
public static class InitException extends Exception
{
InitException(String msg, Throwable cause)
{
super(msg, cause);
}
}
}
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