diff options
Diffstat (limited to 'bpmn/MSOCommonBPMN/src/main/java/org/openecomp/mso/bpmn/common/workflow/service/WorkflowContextHolder.java')
-rw-r--r-- | bpmn/MSOCommonBPMN/src/main/java/org/openecomp/mso/bpmn/common/workflow/service/WorkflowContextHolder.java | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/bpmn/MSOCommonBPMN/src/main/java/org/openecomp/mso/bpmn/common/workflow/service/WorkflowContextHolder.java b/bpmn/MSOCommonBPMN/src/main/java/org/openecomp/mso/bpmn/common/workflow/service/WorkflowContextHolder.java deleted file mode 100644 index 4dfae8b2a3..0000000000 --- a/bpmn/MSOCommonBPMN/src/main/java/org/openecomp/mso/bpmn/common/workflow/service/WorkflowContextHolder.java +++ /dev/null @@ -1,188 +0,0 @@ -/*- - * ============LICENSE_START======================================================= - * ONAP - SO - * ================================================================================ - * 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.common.workflow.service; - -import java.util.concurrent.DelayQueue; -import java.util.concurrent.TimeUnit; - -import javax.ws.rs.core.Response; - -import org.jboss.resteasy.spi.AsynchronousResponse; -import org.slf4j.MDC; - -import org.openecomp.mso.logger.MessageEnum; -import org.openecomp.mso.logger.MsoLogger; - -/** - * Workflow Context Holder instance which can be accessed elsewhere either in groovy scripts or Java - * @version 1.0 - * - */ -public class WorkflowContextHolder { - - private static MsoLogger msoLogger = MsoLogger.getMsoLogger(MsoLogger.Catalog.BPEL); - private static final String logMarker = "[WORKFLOW-CONTEXT-HOLDER]"; - private static WorkflowContextHolder instance = null; - - /** - * Delay Queue which holds workflow context holder objects - */ - private final DelayQueue<WorkflowContext> responseQueue = new DelayQueue<>(); - private final TimeoutThread timeoutThread = new TimeoutThread(); - - private WorkflowContextHolder() { - timeoutThread.start(); - } - - /** - * Singleton holder which eliminates hot lock - * Since the JVM synchronizes static method there is no synchronization needed for this method - * @return - */ - public static synchronized WorkflowContextHolder getInstance() { - if (instance == null) { - instance = new WorkflowContextHolder(); - } - return instance; - } - - public void put(WorkflowContext context) { - msoLogger.debug(logMarker + " Adding context to the queue: " - + context.getRequestId()); - responseQueue.put(context); - } - - public void remove(WorkflowContext context) { - msoLogger.debug(logMarker + " Removing context from the queue: " - + context.getRequestId()); - responseQueue.remove(context); - } - - public WorkflowContext getWorkflowContext(String requestId) { - // Note: DelayQueue interator is threadsafe - for (WorkflowContext context : responseQueue) { - if (requestId.equals(context.getRequestId())) { - msoLogger.debug("Found context for request id: " + requestId); - return context; - } - } - - msoLogger.debug("Unable to find context for request id: " + requestId); - return null; - } - - /** - * Builds the callback response object to respond to client - * @param processKey - * @param processInstanceId - * @param requestId - * @param callbackResponse - * @return - */ - public Response processCallback(String processKey, String processInstanceId, - String requestId, WorkflowCallbackResponse callbackResponse) { - WorkflowResponse workflowResponse = new WorkflowResponse(); - WorkflowContext workflowContext = getWorkflowContext(requestId); - - if (workflowContext == null) { - msoLogger.debug("Unable to correlate workflow context for request id: " + requestId - + ":processInstance Id:" + processInstanceId - + ":process key:" + processKey); - workflowResponse.setMessage("Fail"); - workflowResponse.setMessageCode(400); - workflowResponse.setContent("Unable to correlate workflow context, bad request. Request Id: " + requestId); - return Response.serverError().entity(workflowResponse).build(); - } - - responseQueue.remove(workflowContext); - - msoLogger.debug("Using callback response for request id: " + requestId); - workflowResponse.setContent(callbackResponse.getResponse()); - workflowResponse.setProcessInstanceId(processInstanceId); - workflowResponse.setMessageCode(callbackResponse.getStatusCode()); - workflowResponse.setMessage(callbackResponse.getMessage()); - sendWorkflowResponseToClient(processKey, workflowContext, workflowResponse); - return Response.ok().entity(workflowResponse).build(); - } - - /** - * Send the response to client asynchronously when invoked by the BPMN process - * @param processKey - * @param workflowContext - * @param workflowResponse - */ - private void sendWorkflowResponseToClient(String processKey, WorkflowContext workflowContext, - WorkflowResponse workflowResponse) { - msoLogger.debug(logMarker + "Sending the response for request id: " + workflowContext.getRequestId()); - recordEvents(processKey, workflowResponse, workflowContext.getStartTime()); - Response response = Response.status(workflowResponse.getMessageCode()).entity(workflowResponse).build(); - AsynchronousResponse asyncResp = workflowContext.getAsynchronousResponse(); - asyncResp.setResponse(response); - } - - /** - * Timeout thread which monitors the delay queue for expired context and send timeout response - * to client - *git review -R - * */ - private class TimeoutThread extends Thread { - public void run() { - while (!isInterrupted()) { - try { - WorkflowContext requestObject = responseQueue.take(); - msoLogger.debug("Time remaining for request id: " + requestObject.getRequestId() + ":" + requestObject.getDelay(TimeUnit.MILLISECONDS)); - msoLogger.debug("Preparing timeout response for " + requestObject.getProcessKey() + ":" + ":" + requestObject.getRequestId()); - WorkflowResponse response = new WorkflowResponse(); - response.setMessage("Fail"); - response.setContent("Request timedout, request id:" + requestObject.getRequestId()); - //response.setProcessInstanceID(requestObject.getProcessInstance().getProcessInstanceId()); - recordEvents(requestObject.getProcessKey(), response, requestObject.getStartTime()); - response.setMessageCode(500); - Response result = Response.status(500).entity(response).build(); - requestObject.getAsynchronousResponse().setResponse(result); - msoLogger.debug("Sending timeout response for request id:" + requestObject.getRequestId() + ":response:" + response); - } catch (InterruptedException e) { - break; - } catch (Exception e) { - msoLogger.debug("WorkflowContextHolder timeout thread caught exception: " + e); - msoLogger.error(MessageEnum.BPMN_GENERAL_EXCEPTION, "BPMN", MsoLogger.getServiceName(), - MsoLogger.ErrorCode.UnknownError, "Error in WorkflowContextHolder timeout thread"); - - } - } - - msoLogger.debug("WorkflowContextHolder timeout thread interrupted, quitting"); - } - } - - private static void recordEvents(String processKey, WorkflowResponse response, - long startTime) { - - msoLogger.recordMetricEvent ( startTime, MsoLogger.StatusCode.COMPLETE, MsoLogger.ResponseCode.Suc, - logMarker + response.getMessage() + " for processKey: " - + processKey + " with content: " + response.getContent(), "BPMN", MDC.get(processKey), null); - - msoLogger.recordAuditEvent (startTime, MsoLogger.StatusCode.COMPLETE, MsoLogger.ResponseCode.Suc, logMarker - + response.getMessage() + " for processKey: " - + processKey + " with content: " + response.getContent()); - - } -} |