Examples with TaskProtocolHandler org.wso2.carbon.bpel.b4p.coordination.dao.TaskProtocolHandler used on opensource projects

Example 1 with TaskProtocolHandler

use of org.wso2.carbon.bpel.b4p.coordination.dao.TaskProtocolHandler in project carbon-business-process by wso2.

the class TerminationTask method run.

@Override
public void run() {
    PrivilegedCarbonContext.startTenantFlow();
    PrivilegedCarbonContext privilegedCarbonContext = PrivilegedCarbonContext.getThreadLocalCarbonContext();
    privilegedCarbonContext.setTenantId(tenantID, true);
    try {
        List<TaskProtocolHandler> taskProtocolHandlers = null;
        try {
            taskProtocolHandlers = getHTProtocolHandlerURLWithTasks(instanceID);
        } catch (Exception e) {
            log.error("Error occurred while retrieving coordination data", e);
        }
        String currentProtocolHandler = "";
        ExitProtocolMessage currentExitMessage = null;
        for (TaskProtocolHandler taskProtocolHandler : taskProtocolHandlers) {
            // Task Protocol Handler and Task ID should be not null
            if (taskProtocolHandler.getProtocolHandlerURL() != null && taskProtocolHandler.getTaskID() != null) {
                if (!currentProtocolHandler.equals(taskProtocolHandler.getProtocolHandlerURL())) {
                    // found a new protocol handler URL, so invoking old exit message.
                    if (currentExitMessage != null) {
                        // To ignore initial condition, we do null check here.
                        invokeProtocolHandler(currentExitMessage);
                    }
                    currentExitMessage = new ExitProtocolMessage(taskProtocolHandler.getProtocolHandlerURL());
                    currentProtocolHandler = taskProtocolHandler.getProtocolHandlerURL();
                }
                currentExitMessage.getTaskIDs().add(taskProtocolHandler.getTaskID());
                if (log.isDebugEnabled()) {
                    log.debug("building exit protocol message for task id:" + taskProtocolHandler.getTaskID());
                }
            }
        }
        if (currentExitMessage != null) {
            // Here we do last invocation.
            invokeProtocolHandler(currentExitMessage);
        }
        // Cleaning coordination data.
        boolean deleted = false;
        try {
            deleted = deleteCoordinationData(instanceID);
        } catch (Exception e) {
            log.error("Error occurred while cleaning coordination data for process instance id " + instanceID, e);
        }
        if (deleted && log.isDebugEnabled()) {
            log.debug("Coordination data are removed from database for process instance id " + instanceID);
        }
    } finally {
        PrivilegedCarbonContext.endTenantFlow();
    }
}