/**
* 处理工作流中的下游节点
*
* @param multiExit
* @throws Exception
*/
private void processNextNodes(List<String> multiExit) throws Exception {
if (status.isEndState()) {
return;
}
for (String name : multiExit) {
JobPlanNode nextNode = workflowManager.getNode(name);
if (null != nextNode) {
NodeContext nextcontext = new JobPlanNodeContext(this);
if (!nextNode.getTypeEnum().isFinalType()) {
signal(nextNode.getName(), nextcontext);
} else {
NodeHandler nextnodeHandler =
NodeHandlerFactory.createNodeHandler(jobEventManager, nextNode);
nextnodeHandler.enter(nextcontext);
if (nextNode.getTypeEnum() == JobPlanNodeType.end) {
nextnodeHandler.exit(nextcontext);
status = WorkflowStatus.SUCCEEDED;
}
if (nextNode.getTypeEnum() == JobPlanNodeType.fail) {
nextnodeHandler.exit(nextcontext);
status = WorkflowStatus.FAILED;
}
}
}
}
}
/**
* 处理工作流中的当前节点
*
* @param nodeName 工作流节点名称
* @param context 节点上下文
*/
private void signal(String nodeName, NodeContext context) {
if (status != WorkflowStatus.RUNNING) {
return;
}
try {
NodeHandler pnodeHandler =
NodeHandlerFactory.createNodeHandler(jobEventManager, workflowManager.getNode(nodeName));
boolean exiting = pnodeHandler.enter(context);
if (exiting) {
List<String> multiExit = pnodeHandler.multiExit(context);
processNextNodes(multiExit);
}
} catch (Exception e) {
LOG.error("Fail to process job plan node.", e);
status = WorkflowStatus.FAILED;
}
}