Auto-enroll pollers into autoscaling on PollerAutoscalingAutoEnroll (Java SDK)#2953
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Auto-enroll pollers into autoscaling on PollerAutoscalingAutoEnroll (Java SDK)#2953veeral-patel wants to merge 1 commit into
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When a namespace advertises the PollerAutoscalingAutoEnroll capability, automatically switch a poller type to poller autoscaling if the user left it at its default (set neither MaxConcurrent<Type>TaskPollers nor a <Type>TaskPollerBehavior). Explicitly configured pollers are untouched. Auto-enroll implies full autoscaling support, so it also enables serverSupportsAutoscaling (scale-down). Applies to workflow, activity, and nexus pollers. The decision is made at worker start(), after namespace capabilities are loaded, by rebuilding each dormant worker's PollerOptions before its poller is created. Per-poller-type eligibility is captured at Worker construction from the raw (pre-defaulting) WorkerOptions and threaded through PollerOptions. Also bumps the temporal/api proto submodule to pick up the poller_autoscaling_auto_enroll namespace capability (api #803).
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Mirrors the Go SDK (temporalio/sdk-go#2442).
What
When a namespace advertises the
PollerAutoscalingAutoEnrollcapability, workers automatically use poller autoscaling for any poller type left at its default — i.e. where the user set neitherMaxConcurrent<Type>TaskPollersnor a<Type>TaskPollerBehavior. Explicitly configured pollers are left alone. Applies to workflow, activity, and nexus pollers.How
Workerrecords, per poller type, whether it was left at its default (read from the rawWorkerOptions, before defaults are applied).start()— once namespace capabilities are known — each eligible poller's behavior is swapped to autoscaling before its poller is created.NamespaceCapabilitiestreats it as enablingpollerAutoscalingtoo.Proto
Bumps the
temporal/apisubmodule to pick up thepoller_autoscaling_auto_enrollcapability (api #803).Testing
PollerAutoscalingAutoEnrollTest— the enroll decision (default + capability → autoscaling; capability off, explicit count, or explicit behavior → unchanged).WorkerPollerAutoEnrollEligibilityTest—Workermarks defaults eligible and explicit config ineligible, per type.