org.wso2.carbon.bpel.bam.publisher.Axis2ConfigurationContextObserverImpl.java Source code

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Here is the source code for org.wso2.carbon.bpel.bam.publisher.Axis2ConfigurationContextObserverImpl.java

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/**
 *  Copyright (c) 2005-2010, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
 *
 *  WSO2 Inc. 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.wso2.carbon.bpel.bam.publisher;

import org.apache.axis2.context.ConfigurationContext;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.wso2.carbon.bpel.core.ode.integration.BPELServerImpl;
import org.wso2.carbon.bpel.core.ode.integration.store.TenantProcessStore;
import org.wso2.carbon.context.CarbonContext;
import org.wso2.carbon.context.PrivilegedCarbonContext;
import org.wso2.carbon.databridge.agent.thrift.AsyncDataPublisher;
import org.wso2.carbon.databridge.agent.thrift.lb.LoadBalancingDataPublisher;
import org.wso2.carbon.utils.AbstractAxis2ConfigurationContextObserver;
import org.wso2.carbon.utils.multitenancy.MultitenantUtils;

import java.util.Collection;
import java.util.Iterator;
import java.util.Map;

/**
 * Listen to Axis2ConfigurationContext life cycle events and stop the DataPublisher when the tenant is unloaded
 */
public class Axis2ConfigurationContextObserverImpl extends AbstractAxis2ConfigurationContextObserver {
    private static Log log = LogFactory.getLog(Axis2ConfigurationContextObserverImpl.class);
    private BPELServerImpl bpelServer;

    public Axis2ConfigurationContextObserverImpl() {
        bpelServer = BPELServerImpl.getInstance();
    }

    public void createdConfigurationContext(ConfigurationContext configurationContext) {

    }

    public void terminatingConfigurationContext(ConfigurationContext configurationContext) {
        Integer tenantId = CarbonContext.getThreadLocalCarbonContext().getTenantId();

        log.info("Removing data publishers for this tenant " + tenantId + ".");

        TenantProcessStore tenantsProcessStore = bpelServer.getMultiTenantProcessStore()
                .getTenantsProcessStore(tenantId);
        if (tenantsProcessStore != null) {
            Map dataPublisherMap = tenantsProcessStore.getDataPublisherMap();
            if (dataPublisherMap != null) {
                Collection<EventPublisherConfig> eventPublisherConfig = dataPublisherMap.values();
                Iterator<EventPublisherConfig> iterator = eventPublisherConfig.iterator();
                while (iterator.hasNext()) {
                    EventPublisherConfig publisherConfig = iterator.next();
                    if (publisherConfig.getDataPublisher() != null) {
                        AsyncDataPublisher publisher = publisherConfig.getDataPublisher();
                        publisher.stop();
                    } else if (publisherConfig.getLoadBalancingDataPublisher() != null) {
                        LoadBalancingDataPublisher loadBalancingDataPublisher = publisherConfig
                                .getLoadBalancingDataPublisher();
                        loadBalancingDataPublisher.stop();
                    }
                }
                eventPublisherConfig.clear();
            }
        }
    }
}