# WSAddressingHandler.java

    /*
     * Copyright (c) 2015, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
     *
     * 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.apache.synapse.transport.passthru.util;

    import org.apache.axis2.AxisFault;
    import org.apache.axis2.context.MessageContext;
    import org.apache.axis2.handlers.AbstractHandler;
    import org.apache.commons.logging.Log;
    import org.apache.commons.logging.LogFactory;
    import org.apache.synapse.transport.util.MessageHandlerProvider;
    import org.apache.synapse.transport.netty.util.RequestResponseUtils;
    import org.apache.synapse.transport.passthru.PassThroughConstants;
    import org.apache.synapse.transport.passthru.Pipe;

    public class WSAddressingHandler extends AbstractHandler {

        private static final Log log = LogFactory.getLog(WSAddressingHandler.class);

        public InvocationResponse invoke(MessageContext messageContext) throws AxisFault {

            Pipe pipe = (Pipe) messageContext.getProperty(PassThroughConstants.PASS_THROUGH_PIPE);
            if (pipe != null || RequestResponseUtils.isHttpCarbonMessagePresent(messageContext)) {
                if (messageContext.isDoingREST()) {
                    return InvocationResponse.CONTINUE;
                }
                if (messageContext.getAxisService() != null) {
                    if (messageContext.getAxisService().getParameter(
                               PassThroughConstants.ENABLE_WS_ADDRESSING) != null &&
                        Boolean.parseBoolean((String) messageContext.getAxisService().
                                   getParameter(PassThroughConstants.ENABLE_WS_ADDRESSING).getValue())) {
                        build(messageContext);
                    }
                } else {
                    log.error("Axis Service is null");
                }
            }
            return InvocationResponse.CONTINUE;
        }

        private void build(MessageContext messageContext) {
            try {
                MessageHandlerProvider.getMessageHandler(messageContext).buildMessage(messageContext, false);
            } catch (Exception e) {
                log.error("Error while executing ws addressing handler", e);
            }
        }
    }