jerrypeng commented on a change in pull request #7255:
URL: https://github.com/apache/pulsar/pull/7255#discussion_r444479973
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File path:
pulsar-functions/worker/src/main/java/org/apache/pulsar/functions/worker/FunctionMetaDataManager.java
##########
@@ -174,89 +181,124 @@ public synchronized boolean containsFunction(String
tenant, String namespace, St
}
/**
- * Sends an update request to the FMT (Function Metadata Topic)
- * @param functionMetaData The function metadata that needs to be updated
- * @return a completable future of when the update has been applied
+ * Called by the worker when we are in the leader mode. In this state, we
update our in-memory
+ * data structures and then write to the metadata topic.
+ * @param functionMetaData The function metadata in question
+ * @param delete Is this a delete operation
+ * @throws IllegalStateException if we are not the leader
+ * @throws IllegalArgumentException if the request is out of date.
*/
- public synchronized CompletableFuture<RequestResult>
updateFunction(FunctionMetaData functionMetaData) {
-
- FunctionMetaData existingFunctionMetadata = null;
- if (containsFunction(functionMetaData.getFunctionDetails().getTenant(),
- functionMetaData.getFunctionDetails().getNamespace(),
- functionMetaData.getFunctionDetails().getName())) {
- existingFunctionMetadata =
getFunctionMetaData(functionMetaData.getFunctionDetails().getTenant(),
- functionMetaData.getFunctionDetails().getNamespace(),
- functionMetaData.getFunctionDetails().getName());
+ public synchronized void updateFunctionOnLeader(FunctionMetaData
functionMetaData, boolean delete)
+ throws IllegalStateException, IllegalArgumentException {
+ if (exclusiveLeaderProducer == null) {
+ throw new IllegalStateException("Not the leader");
+ }
+ boolean needsScheduling;
+ if (delete) {
+ needsScheduling = proccessDeregister(functionMetaData);
+ } else {
+ needsScheduling = processUpdate(functionMetaData);
+ }
+ Request.ServiceRequest serviceRequest =
Request.ServiceRequest.newBuilder()
+ .setServiceRequestType(delete ?
Request.ServiceRequest.ServiceRequestType.DELETE :
Request.ServiceRequest.ServiceRequestType.UPDATE)
+ .setFunctionMetaData(functionMetaData)
+ .setWorkerId(workerConfig.getWorkerId())
+ .setRequestId(UUID.randomUUID().toString())
+ .build();
+ try {
+ lastMessageSeen =
exclusiveLeaderProducer.send(serviceRequest.toByteArray());
+ } catch (Exception e) {
Review comment:
Shouldn't we return a 500 error to the end user? If we call just
"errorNotifier.triggerError(e)", the worker die and the end user will likely
not get a response or a timeout error
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