Support worker features announcement

[YunchuWang]

This pull request introduces support for worker capability negotiation in the gRPC worker, allowing features such as scheduled tasks and large payload externalization to be announced and used. The changes update both the protocol and the worker configuration to enable these capabilities, ensuring that the backend is informed of the worker's supported features.

Worker capability negotiation and protocol updates:

• Added new capability flags to the WorkerCapability enum in orchestrator_service.proto: SCHEDULED_TASKS and LARGE_PAYLOADS, with detailed comments describing their purpose.
• Updated the protocol version reference in versions.txt to reflect the new capabilities.

gRPC worker configuration improvements:

• Introduced a Capabilities collection to GrpcDurableTaskWorkerOptions, allowing dynamic registration of supported capabilities, and defaulting to HistoryStreaming.
• Modified the processor to send the full set of configured capabilities to the backend during worker registration, instead of only HistoryStreaming.

Extension support for new capabilities:

• Updated the Azure Blob Payloads extension to register the LargePayloads capability when enabled.
• Updated the Scheduled Tasks extension to register the ScheduledTasks capability when enabled.

Dependency and import updates:

• Added missing project references and protocol imports in Scheduled Tasks and Azure Blob Payloads extensions to support capability registration. [1] [2] [3] [4]

[Copilot]

Pull Request Overview

This pull request introduces a feature announcement mechanism for gRPC workers to communicate their supported capabilities to the backend at connection time. This enables dynamic feature negotiation and supports extensibility for features like externalized payloads and scheduled tasks.

Key changes:

• Added SayHello gRPC method with request/response messages for workers to announce enabled features to the backend
• Implemented AnnounceWorkerFeaturesAsync with backward-compatible error handling for backends that don't support the new method
• Extended Azure Blob Payloads and Scheduled Tasks extensions to register their features in the worker configuration

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
src/Worker/Grpc/WorkerFeatures.cs	Defines constants for feature names (HistoryStreaming, ExternalizedPayloads, ScheduledTasks) used in feature announcement
src/Worker/Grpc/Logs.cs	Adds logging messages for announcing worker features and handling announcement failures
src/Worker/Grpc/GrpcDurableTaskWorkerOptions.cs	Introduces EnabledFeatures HashSet collection for tracking features registered by extensions
src/Worker/Grpc/GrpcDurableTaskWorker.Processor.cs	Implements AnnounceWorkerFeaturesAsync method that calls SayHello with enabled features, includes error handling for backward compatibility
src/ScheduledTasks/ScheduledTasks.csproj	Adds project reference to Worker.Grpc to access WorkerFeatures constants
src/ScheduledTasks/Extension/DurableTaskWorkerBuilderExtensions.cs	Registers ScheduledTasks feature with worker configuration using PostConfigure
src/Grpc/orchestrator_service.proto	Extends protocol with SayHello RPC method and associated SayHelloRequest/SayHelloResponse messages
src/Extensions/AzureBlobPayloads/DependencyInjection/DurableTaskWorkerBuilderExtensions.AzureBlobPayloads.cs	Registers ExternalizedPayloads feature with worker configuration

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[Copilot]

Pull Request Overview

Copilot reviewed 7 out of 7 changed files in this pull request and generated 4 comments.

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[Copilot]

@YunchuWang I've opened a new pull request, #504, to work on those changes. Once the pull request is ready, I'll request review from you.

[Copilot]

@YunchuWang I've opened a new pull request, #505, to work on those changes. Once the pull request is ready, I'll request review from you.

[Copilot]

Pull Request Overview

Copilot reviewed 7 out of 7 changed files in this pull request and generated no new comments.

[Copilot]

Pull Request Overview

Copilot reviewed 7 out of 7 changed files in this pull request and generated 3 comments.

[Copilot]

Pull Request Overview

Copilot reviewed 9 out of 9 changed files in this pull request and generated 2 comments.