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/*-
* ============LICENSE_START=======================================================
* OPENECOMP - MSO
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. 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.
* ============LICENSE_END=========================================================
*/
package org.openecomp.mso.bpmn.gamma.workflow.service;
import java.io.StringReader;
import java.util.HashMap;
import java.util.Map;
import javax.ws.rs.Consumes;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.camunda.bpm.BpmPlatform;
import org.camunda.bpm.engine.MismatchingMessageCorrelationException;
import org.camunda.bpm.engine.ProcessEngineServices;
import org.camunda.bpm.engine.RuntimeService;
import org.slf4j.MDC;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.openecomp.mso.logger.MessageEnum;
import org.openecomp.mso.logger.MsoLogger;
/**
* Listens for REST notifications from the VNF Adapter and injects each one
* into a waiting BPMN processes.
*/
@Path("/vnfAdapterRestNotify")
public class VnfAdapterRestNotifyResource {
private static final MsoLogger LOGGER = MsoLogger.getMsoLogger(MsoLogger.Catalog.BPEL);
private static final String LOGMARKER = "[VNF-REST-NOTIFY]";
private ProcessEngineServices pes4junit = null;
@POST
@Path("/")
@Consumes(MediaType.APPLICATION_XML)
@Produces(MediaType.TEXT_PLAIN)
public Response notify(String content) {
LOGGER.debug(LOGMARKER + " Received VNF Adapter REST Notification:"
+ System.lineSeparator() + content);
String messageId = null;
long startTime = System.currentTimeMillis();
try {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setNamespaceAware(true);
DocumentBuilder builder = factory.newDocumentBuilder();
InputSource source = new InputSource(new StringReader(content));
Document doc = builder.parse(source);
doc.normalize();
Element rootElement = doc.getDocumentElement();
NodeList childList = rootElement.getChildNodes();
for (int i = 0; i < childList.getLength(); i++) {
Node childNode = childList.item(i);
if (childNode.getNodeType() == Node.ELEMENT_NODE) {
Element childElement = (Element) childNode;
String childElementName = childElement.getLocalName();
if (childElementName == null) {
childElementName = childElement.getNodeName();
}
if ("messageId".equals(childElementName)) {
messageId = childElement.getTextContent();
}
}
}
} catch (Exception e) {
String msg = "Failed to parse VNF Adapter REST Notification: " + e;
LOGGER.debug(LOGMARKER + " " + msg);
LOGGER.error(MessageEnum.BPMN_GENERAL_EXCEPTION, "BPMN", MsoLogger.getServiceName(), MsoLogger.ErrorCode.DataError, LOGMARKER + ":" + msg, e);
return Response.status(400).entity(e).build();
}
if (messageId == null || messageId.isEmpty()) {
String msg = "No messageId in VNF Adapter REST Notification";
LOGGER.debug(LOGMARKER + " " + msg);
LOGGER.error(MessageEnum.BPMN_GENERAL_EXCEPTION, "BPMN", MsoLogger.getServiceName(), MsoLogger.ErrorCode.DataError, LOGMARKER + ":" + msg);
return Response.status(400).entity(msg).build();
}
MsoLogger.setServiceName("MSO." + "vnfAdapterRestNotify");
MsoLogger.setLogContext(messageId, "N/A");
LOGGER.recordAuditEvent (startTime, MsoLogger.StatusCode.COMPLETE, MsoLogger.ResponseCode.Suc, "Call to MSO vnfAdapterRestNotify ");
try {
ProcessEngineServices pes = getProcessEngineServices();
RuntimeService runtimeService = pes.getRuntimeService();
if (!isReadyforCorrelation(runtimeService, "VNFREST_messageId", messageId, "vnfAdapterRestCallbackMessage")) {
String msg = "No process is waiting to receive vnfAdapterRestCallbackMessage with VNFREST_messageId='" + messageId + "'";
LOGGER.debug(LOGMARKER + " " + msg);
LOGGER.error(MessageEnum.BPMN_GENERAL_EXCEPTION, "BPMN", MsoLogger.getServiceName(), MsoLogger.ErrorCode.UnknownError, LOGMARKER + ":" + msg);
LOGGER.recordMetricEvent ( startTime, MsoLogger.StatusCode.COMPLETE, MsoLogger.ResponseCode.Suc,
LOGMARKER + "Call to MSO vnfAdapterRestNotify ", "BPMN", MsoLogger.getServiceName(), "vnfAdapterRestNotify");
LOGGER.recordAuditEvent (startTime, MsoLogger.StatusCode.COMPLETE, MsoLogger.ResponseCode.Suc, "Call to MSO VnfAdapterNotifyService ");
return Response.status(500).entity(msg).build();
}
Map<String,Object> variables = new HashMap<String,Object>();
variables.put("VNFREST_messageId", messageId);
variables.put("VNFREST_callback", content);
runtimeService.createMessageCorrelation("vnfAdapterRestCallbackMessage").setVariables(variables)
.processInstanceVariableEquals("VNFREST_messageId", messageId).correlate();
LOGGER.debug(LOGMARKER + " Completed processing of VNF Adapter REST Notification");
} catch (MismatchingMessageCorrelationException e) {
LOGGER.debug(LOGMARKER + "[CORM] correlation id mismatch");
String msg = "vnfAdapterRestNotify received a notification with messageId='"
+ messageId + "' but it could not be correlated to any active process - ignoring the request";
LOGGER.debug(msg);
LOGGER.error(MessageEnum.BPMN_GENERAL_EXCEPTION, "BPMN", MsoLogger.getServiceName(), MsoLogger.ErrorCode.UnknownError, LOGMARKER, e);
LOGGER.recordMetricEvent ( startTime, MsoLogger.StatusCode.COMPLETE, MsoLogger.ResponseCode.InternalError,
LOGMARKER + "Completed vnfAdapterRestNotify with error ", "BPMN", MsoLogger.getServiceName(), "vnfAdapterRestNotify");
LOGGER.recordAuditEvent (startTime, MsoLogger.StatusCode.COMPLETE, MsoLogger.ResponseCode.InternalError, "Completed vnfAdapterRestNotify with error ");
return Response.status(500).entity(msg).build();
}
LOGGER.recordMetricEvent ( startTime, MsoLogger.StatusCode.COMPLETE, MsoLogger.ResponseCode.Suc,
LOGMARKER + "Completed vnfAdapterRestNotify", "BPMN", MsoLogger.getServiceName(), "vnfAdapterRestNotify");
LOGGER.recordAuditEvent (startTime, MsoLogger.StatusCode.COMPLETE, MsoLogger.ResponseCode.Suc, "Completed vnfAdapterRestNotify");
return Response.status(204).build();
}
private boolean isReadyforCorrelation(RuntimeService runtimeService,
String correlationVariable, String correlationValue, String messageName) {
long waitingInstances = runtimeService.createExecutionQuery()
.messageEventSubscriptionName(messageName)
.processVariableValueEquals(correlationVariable, correlationValue)
.count();
int retries = 50;
while (waitingInstances == 0 && retries > 0) {
try {
Thread.sleep(100);
} catch (InterruptedException e) {
LOGGER.error(MessageEnum.BPMN_GENERAL_EXCEPTION, "BPMN", MsoLogger.getServiceName(), MsoLogger.ErrorCode.UnknownError, LOGMARKER, e);
return false;
}
waitingInstances = runtimeService.createExecutionQuery()
.messageEventSubscriptionName(messageName)
.processVariableValueEquals(correlationVariable, correlationValue)
.count();
retries--;
}
return waitingInstances != 0;
}
private ProcessEngineServices getProcessEngineServices() {
if (pes4junit == null) {
return BpmPlatform.getDefaultProcessEngine();
} else {
return pes4junit;
}
}
public void setProcessEngineServices4junit(ProcessEngineServices pes) {
pes4junit = pes;
}
}
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