Java tutorial
/* * Copyright (c) 2005-2009, 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.event.ws.internal.builders; import java.util.Calendar; import javax.xml.namespace.QName; import org.apache.axiom.om.OMAttribute; import org.apache.axiom.om.OMElement; import org.apache.axiom.om.OMNamespace; import org.apache.axiom.soap.SOAPEnvelope; import org.apache.axiom.soap.SOAPFactory; import org.apache.axis2.AxisFault; import org.apache.axis2.addressing.AddressingConstants; import org.apache.axis2.addressing.EndpointReference; import org.apache.axis2.addressing.EndpointReferenceHelper; import org.apache.axis2.context.MessageContext; import org.apache.axis2.databinding.utils.ConverterUtil; import org.apache.axis2.databinding.types.Duration; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.wso2.carbon.event.ws.internal.builders.exceptions.BuilderException; import org.wso2.carbon.event.ws.internal.builders.exceptions.InvalidExpirationTimeException; import org.wso2.carbon.event.ws.internal.builders.exceptions.InvalidMessageException; import org.wso2.carbon.event.ws.internal.builders.utils.BuilderUtils; import org.wso2.carbon.event.ws.internal.util.EventingConstants; import org.wso2.carbon.event.core.subscription.Subscription; import org.wso2.carbon.event.core.subscription.EventFilter; @Deprecated public class SubscribeCommandBuilder extends CommandBuilderConstants { private static final Log log = LogFactory.getLog(SubscribeCommandBuilder.class); private SOAPFactory factory; public SubscribeCommandBuilder(MessageContext messageCtx) { factory = (SOAPFactory) messageCtx.getEnvelope().getOMFactory(); } /** * (01) <s12:Envelope * (02) xmlns:s12="http://www.w3.org/2003/05/soap-envelope" * (03) xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing" * (04) xmlns:wse="http://schemas.xmlsoap.org/ws/2004/08/eventing" * (05) xmlns:ew="http://www.example.com/warnings" > * (06) <s12:Header> * (07) <wsa:Action> * (08) http://schemas.xmlsoap.org/ws/2004/08/eventing/Subscribe * (09) </wsa:Action> * (10) <wsa:MessageID> * (11) uuid:e1886c5c-5e86-48d1-8c77-fc1c28d47180 * (12) </wsa:MessageID> * (13) <wsa:ReplyTo> * (14) <wsa:Address>http://www.example.com/MyEvEntsink</wsa:Address> * (15) <wsa:ReferenceProperties> * (16) <ew:MySubscription>2597</ew:MySubscription> * (17) </wsa:ReferenceProperties> * (18) </wsa:ReplyTo> * (19) <wsa:To>http://www.example.org/oceanwatch/EventSource</wsa:To> * (20) </s12:Header> * (21) <s12:Body> * (22) <wse:Subscribe> * (23) <wse:EndTo> * (24) <wsa:Address> * (25) http://www.example.com/MyEventSink * (26) </wsa:Address> * (27) <wsa:ReferenceProperties> * (28) <ew:MySubscription>2597</ew:MySubscription> * (29) </wsa:ReferenceProperties> * (30) </wse:EndTo> * (31) <wse:Delivery> * (32) <wse:NotifyTo> * (33) <wsa:Address> * (34) http://www.other.example.com/OnStormWarning * (35) </wsa:Address> * (36) <wsa:ReferenceProperties> * (37) <ew:MySubscription>2597</ew:MySubscription> * (38) </wsa:ReferenceProperties> * (39) </wse:NotifyTo> * (40) </wse:Delivery> * (41) <wse:Expires>2004-06-26T21:07:00.000-08:00</wse:Expires> * (42) <wse:Filter xmlns:ow="http://www.example.org/oceanwatch" * (43) Dialect="http://www.example.org/topicFilter" > * (44) weather.storms * (45) </wse:Filter> * (46) </wse:Subscribe> * (47) </s12:Body> * (48) </s12:Envelope> * * @param envelope The soap envelope containing the subscription request * @return The created subscription * @throws InvalidMessageException * @throws InvalidExpirationTimeException */ public Subscription toSubscription(SOAPEnvelope envelope) throws InvalidMessageException, InvalidExpirationTimeException { Subscription subscription = null; OMElement notifyToElem; if (envelope == null) { log.error("No SOAP envelope was provided."); throw new BuilderException("No SOAP envelope was provided."); } OMElement elem = null; if (envelope.getBody() != null) { elem = envelope.getBody().getFirstChildWithName(SUBSCRIBE_QNAME); } if (elem != null) { OMElement deliveryElem = elem.getFirstChildWithName(DELIVERY_QNAME); if (deliveryElem != null) { notifyToElem = deliveryElem.getFirstChildWithName(NOTIFY_TO_QNAME); if (notifyToElem != null) { String ep = BuilderUtils.getEndpointFromWSAAddress(notifyToElem.getFirstElement()); if (ep != null) { subscription = new Subscription(); subscription.setEventSinkURL(ep); } } else { log.error("NotifyTo element not found in the subscription message."); throw new InvalidMessageException("NotifyTo element not found in the subscription message."); } } else { log.error("Delivery element is not found in the subscription message."); throw new InvalidMessageException("Delivery element is not found in the subscription message."); } OMElement filterElem = elem.getFirstChildWithName(FILTER_QNAME); if (subscription != null && filterElem != null) { OMAttribute dialectAttribute = filterElem.getAttribute(ATT_DIALECT); if (dialectAttribute != null && dialectAttribute.getAttributeValue() != null) { subscription.setEventFilter( new EventFilter(dialectAttribute.getAttributeValue(), filterElem.getText().trim())); } else { log.error("Error in creating subscription. Filter dialect not defined."); throw new BuilderException("Error in creating subscription. Filter dialect not defined."); } } else if (subscription == null) { log.error("Error in creating subscription."); throw new BuilderException("Error in creating subscription."); } OMElement expiryElem = elem.getFirstChildWithName(EXPIRES); if (expiryElem != null) { Calendar calendarExpires; try { String expiryText = expiryElem.getText().trim(); if (expiryText.startsWith("P")) { calendarExpires = Calendar.getInstance(); Duration duration = ConverterUtil.convertToDuration(expiryText); calendarExpires.add(Calendar.YEAR, duration.getYears()); calendarExpires.add(Calendar.MONTH, duration.getMonths()); calendarExpires.add(Calendar.DAY_OF_MONTH, duration.getDays()); calendarExpires.add(Calendar.HOUR_OF_DAY, duration.getHours()); calendarExpires.add(Calendar.MINUTE, duration.getMinutes()); calendarExpires.add(Calendar.SECOND, (int) duration.getSeconds()); } else { calendarExpires = ConverterUtil.convertToDateTime(expiryText); } } catch (Exception e) { log.error("Error converting the expiration date.", e); throw new InvalidExpirationTimeException("Error converting the expiration date.", e); } Calendar calendarNow = Calendar.getInstance(); if (calendarNow.before(calendarExpires)) { subscription.setExpires(calendarExpires); } else { log.error("The expiration time has passed."); throw new InvalidExpirationTimeException("The expiration time has passed."); } } OMElement scriptElement = elem .getFirstChildWithName(new QName(EventingConstants.WSE_EXTENDED_EVENTING_NS, EventingConstants.EVENTING_EXECUTABLE_SCRIPT_ELEMENT)); if (scriptElement != null) { subscription.getProperties().put(EventingConstants.EVENTING_EXECUTABLE_SCRIPT_ELEMENT, scriptElement.getText()); } } else { log.error("Subscribe element is required as the payload of the subscription message."); throw new InvalidMessageException( "Subscribe element is required as the payload of the subscription message."); } return subscription; } /** * (01) <s12:Envelope * (02) xmlns:s12="http://www.w3.org/2003/05/soap-envelope" * (03) xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing" * (04) xmlns:wse="http://schemas.xmlsoap.org/ws/2004/08/eventing" * (05) xmlns:ew="http://www.example.com/warnings" * (06) xmlns:ow="http://www.example.org/oceanwatch" > * (07) <s12:Header> * (08) <wsa:Action> * (09) http://schemas.xmlsoap.org/ws/2004/08/eventing/SubscribeResponse * (10) </wsa:Action> * (11) <wsa:RelatesTo> * (12) uuid:e1886c5c-5e86-48d1-8c77-fc1c28d47180 * (13) </wsa:RelatesTo> * (14) <wsa:To>http://www.example.com/MyEventSink</wsa:To> * (15) <ew:MySubscription>2597</ew:MySubscription> * (16) </s12:Header> * (17) <s12:Body> * (18) <wse:SubscribeResponse> * (19) <wse:SubscriptionManager> * (20) <wsa:Address> * (21) http://www.example.org/oceanwatch/SubscriptionManager * (22) </wsa:Address> * (23) <wsa:ReferenceParameters> * (24) <wse:Identifier> * (25) uuid:22e8a584-0d18-4228-b2a8-3716fa2097fa * (26) </wse:Identifier> * (27) </wsa:ReferenceParameters> * (28) </wse:SubscriptionManager> * (29) <wse:Expires>2004-07-01T00:00:00.000-00:00</wse:Expires> * (30) </wse:SubscribeResponse> * (31) </s12:Body> * (32) </s12:Envelope> * Generate the subscription responce message * * @param subscription The subscription to which the response should be created * @return The response envelope. */ public SOAPEnvelope fromSubscription(Subscription subscription) { SOAPEnvelope message = factory.getDefaultEnvelope(); EndpointReference subscriptionManagerEPR = new EndpointReference(subscription.getEventSinkURL()); subscriptionManagerEPR.addReferenceParameter(new QName(EventingConstants.WSE_EVENTING_NS, EventingConstants.WSE_EN_IDENTIFIER, EventingConstants.WSE_EVENTING_PREFIX), subscription.getId()); OMNamespace eventingNamespace = factory.createOMNamespace(EventingConstants.WSE_EVENTING_NS, EventingConstants.WSE_EVENTING_PREFIX); OMElement subscribeResponseElement = factory.createOMElement(EventingConstants.WSE_EN_SUBSCRIBE_RESPONSE, eventingNamespace); try { OMElement subscriptionManagerElement = EndpointReferenceHelper.toOM( subscribeResponseElement.getOMFactory(), subscriptionManagerEPR, new QName(EventingConstants.WSE_EVENTING_NS, EventingConstants.WSE_EN_SUBSCRIPTION_MANAGER, EventingConstants.WSE_EVENTING_PREFIX), AddressingConstants.Submission.WSA_NAMESPACE); subscribeResponseElement.addChild(subscriptionManagerElement); OMElement expiresElement = factory.createOMElement(EventingConstants.WSE_EN_EXPIRES, eventingNamespace); if (subscription.getExpires() != null) { factory.createOMText(expiresElement, ConverterUtil.convertToString(subscription.getExpires())); } else { factory.createOMText(expiresElement, "*"); } subscribeResponseElement.addChild(expiresElement); message.getBody().addChild(subscribeResponseElement); } catch (AxisFault axisFault) { log.error("Unable to create subscription response", axisFault); throw new BuilderException("Unable to create subscription response", axisFault); } return message; } }