/*
* 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.util;
import org.apache.axis2.clustering.ClusteringFault;
import org.apache.axis2.context.ConfigurationContext;
import org.apache.synapse.SynapseException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* Helper class for replicating states
*/
public class Replicator {
private static final Log log = LogFactory.getLog(Replicator.class);
/**
* Helper method to replicates states of the property with given key
* Removes the property and then replicates the current state so that all instances
* across cluster can see this state
*
* @param key The key of the property
* @param configCtx Axis2 configuration context
*/
public static void removeAndReplicateState(String key, ConfigurationContext configCtx) {
if (configCtx != null && key != null) {
try {
if (log.isDebugEnabled()) {
log.debug("Start replicating the property removal with key : " + key);
}
configCtx.removePropertyNonReplicable(key);
org.apache.axis2.clustering.context.Replicator.replicate(
configCtx, new String[]{key});
if (log.isDebugEnabled()) {
log.debug("Completed replication of the property removal with key : " + key);
}
} catch (ClusteringFault clusteringFault) {
handleException("Error during the replicating states ", clusteringFault);
}
}
}
/**
* Helper method to replicates states of the property with given key
* replicates the given state so that all instances across cluster can see this state
*
* @param key The key of the property
* @param value The value of the property
* @param configCtx Axis2 COnfiguration Context
*/
public static void setAndReplicateState(String key, Object value, ConfigurationContext configCtx) {
if (configCtx != null && key != null && value != null) {
try {
if (log.isDebugEnabled()) {
log.debug("Start replicating the property with key : " + key +
" value : " + value);
}
configCtx.setNonReplicableProperty(key, value);
org.apache.axis2.clustering.context.Replicator.replicate(
configCtx, new String[]{key});
if (log.isDebugEnabled()) {
log.debug("Completed replication of the property with key : " + key);
}
} catch (ClusteringFault clusteringFault) {
handleException("Error during the replicating states ", clusteringFault);
}
}
}
/**
* Helper methods for handle errors.
*
* @param msg The error message
* @param e The exception
*/
private static void handleException(String msg, Exception e) {
log.error(msg, e);
throw new SynapseException(msg, e);
}
}