/*
* 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.synapse.config;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.synapse.SynapseConstants;
import org.apache.synapse.SynapseException;
import org.apache.synapse.util.DataSourceRegistrar;
import org.apache.synapse.config.xml.XMLConfigurationBuilder;
import org.apache.synapse.mediators.base.SequenceMediator;
import org.apache.synapse.mediators.builtin.DropMediator;
import org.apache.synapse.mediators.builtin.LogMediator;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.util.Properties;
/**
* Builds a Synapse Configuration model with a given input
* (e.g. XML, programmatic creation, default etc)
*/
public class SynapseConfigurationBuilder {
private static Log log = LogFactory.getLog(SynapseConfigurationBuilder.class);
/**
* Return the default Synapse Configuration
* @return the default configuration to be used
*/
public static SynapseConfiguration getDefaultConfiguration() {
// programatically create an empty configuration which just log and drop the messages
SynapseConfiguration config = new SynapseConfiguration();
SequenceMediator mainmediator = new SequenceMediator();
mainmediator.addChild(new LogMediator());
mainmediator.addChild(new DropMediator());
config.addSequence(SynapseConstants.MAIN_SEQUENCE_KEY, mainmediator);
SequenceMediator faultmediator = new SequenceMediator();
LogMediator fault = new LogMediator();
fault.setLogLevel(LogMediator.FULL);
faultmediator.addChild(fault);
config.addSequence(SynapseConstants.FAULT_SEQUENCE_KEY, faultmediator);
return config;
}
/**
* Build a Synapse configuration from a given XML configuration file
*
* @param configFile the XML configuration
* @return the Synapse configuration model
*/
public static SynapseConfiguration getConfiguration(String configFile) {
// build the Synapse configuration parsing the XML config file
try {
Properties synapseProperties = loadSynapseProperties();
DataSourceRegistrar.registerDataSources(synapseProperties);
SynapseConfiguration synCfg
= XMLConfigurationBuilder.getConfiguration(new FileInputStream(configFile));
log.info("Loaded Synapse configuration from : " + configFile);
synCfg.setPathToConfigFile(new File(configFile).getAbsolutePath());
synCfg.setProperties(synapseProperties);
return synCfg;
} catch (FileNotFoundException fnf) {
handleException("Cannot load Synapse configuration from : " + configFile, fnf);
} catch (Exception e) {
handleException("Could not initialize Synapse : " + e.getMessage(), e);
}
return null;
}
private static Properties loadSynapseProperties() {
try {
Properties properties = new Properties();
ClassLoader cl = Thread.currentThread().getContextClassLoader();
if (log.isDebugEnabled()) {
log.debug("synapse.properties file is loading from classpath");
}
InputStream in = cl.getResourceAsStream(SynapseConstants.SYNAPSE_PROPERTIES);
if (in == null) {
if (log.isDebugEnabled()) {
log.debug("Unable to load synapse.propeties file");
}
String path = SynapseConstants.CONF_DIRECTORY +
File.separatorChar + SynapseConstants.SYNAPSE_PROPERTIES;
if (log.isDebugEnabled()) {
log.debug("synapse.properties file is loading from classpath" +
" with resource path '" + path + " '");
}
in = cl.getResourceAsStream(path);
if (in == null) {
if (log.isDebugEnabled()) {
log.debug("Unable to load the synapse.properties file from classpath" +
" with resource name '" + path + " '");
}
}
}
if (in != null) {
properties.load(in);
}
return properties;
} catch (Exception e) {
log.info("Using the default tuning parameters for Synapse");
}
return new Properties();
}
private static void handleException(String msg, Exception e) {
log.error(msg, e);
throw new SynapseException(msg, e);
}
}