/*
* Copyright 2014 Red Hat Inc. and/or its affiliates and other contributors.
*
* 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 org.switchyard.common.camel;
import java.util.Map;
import java.util.Map.Entry;
import org.apache.camel.CamelContext;
import org.apache.camel.CamelContextAware;
import org.apache.camel.ManagementStatisticsLevel;
import org.switchyard.ServiceDomain;
import org.switchyard.common.type.Classes;
/**
* Utility class which encapsulates CamelContext configuration based on a
* set of properties. Putting this in a distinct class keeps the property
* constants in a single place and keeps the messy configuration code out
* of SwitchYardCamelContextImpl.
*/
public final class CamelContextConfigurator {
/**
* Domain property used to configure the timeout value for ShutdownStrategy.
*/
public static final String SHUTDOWN_TIMEOUT = "org.switchyard.camel.ShutdownTimeout";
/**
* Domain property used to configure the statistics level for Camel management. The
* value of this property corresponds to the string value of the ManagementStatisticsLevel enum.
*/
public static final String PERFORMANCE_STATISTICS =
"org.switchyard.camel.PerformanceStatistics";
/**
* Property which contains the fully-qualified name of a class which implements
* CamelContextAware and can be used to configure the CamelContext used within SwitchYard.
*/
public static final String CAMEL_CONTEXT_CONFIG =
"org.switchyard.camel.CamelContextConfiguration";
private CamelContextConfigurator() {
// prevent direct instantiation
}
/**
* Configure CamelContext based on a ServiceDomain instance.
* @param context CamelContext to configure
* @param domain domain used to configure CamelContext
*/
public static final void configure(CamelContext context, ServiceDomain domain) {
configure(context, domain.getProperties());
}
/**
* Configure CamelContext based on a map of properties.
* @param context CamelContext to configure
* @param properties properties to configure
*/
public static final void configure(CamelContext context, Map<String, Object> properties) {
for (Entry<String, Object> property : properties.entrySet()) {
if (property.getValue() != null) {
configure(context, property.getKey(), property.getValue());
}
}
}
/**
* Configure CamelContext instance with a property name/value.
* @param context CamelContext to configure
* @param name config property name
* @param value config property value
*/
public static final void configure(CamelContext context, String name, Object value) {
try {
if (name.equals(SHUTDOWN_TIMEOUT)) {
configureShutdownTimeout(context, value);
} else if (name.equals(PERFORMANCE_STATISTICS)) {
configurePerformanceStatistics(context, value);
} else if (name.equals(CAMEL_CONTEXT_CONFIG)) {
configureCamelContextAware(context, value);
}
} catch (Exception ex) {
CommonCamelLogger.ROOT_LOGGER.camelContextConfigurationError(name, value, ex);
}
}
private static void configureShutdownTimeout(CamelContext context, Object value) {
int timeout = Integer.parseInt(value.toString());
context.getShutdownStrategy().setTimeout(timeout);
}
private static void configurePerformanceStatistics(CamelContext context, Object value) {
ManagementStatisticsLevel level = ManagementStatisticsLevel.valueOf(value.toString());
context.getManagementStrategy().setStatisticsLevel(level);
}
private static void configureCamelContextAware(CamelContext context, Object value) throws Exception {
Class<?> contextAwareClass = Classes.forName(value.toString());
CamelContextAware contextAware = (CamelContextAware)contextAwareClass.newInstance();
contextAware.setCamelContext(context);
}
}