feat: add configurable gRPC message size limits - #3214
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Add MaxRecvMsgSize and MaxSendMsgSize options to GRPCServerConfig to allow configuring server-side gRPC message size limits. This enables operators to increase the default 4MiB limit for both external API calls and internal dispatch operations. New flags: - --grpc-max-recv-msg-size (default: 4194304) - --grpc-max-send-msg-size (default: 4194304) - --dispatch-cluster-max-recv-msg-size (default: 4194304) - --dispatch-cluster-max-send-msg-size (default: 4194304) Use case: LookupSubjects with complex permission schemas involving recursive relations (e.g., group#downwards_member) and set operations can exceed the default limit due to internal CollectingDispatchStream buffering during Union/Intersection/Exclusion operations. Fixes authzed#3213
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Add MaxRecvMsgSize and MaxSendMsgSize options to GRPCServerConfig to allow configuring server-side gRPC message size limits.
This enables operators to increase the default 4MiB limit for both external API calls and internal dispatch operations.
New flags:
Use case: LookupSubjects with complex permission schemas involving recursive relations (e.g., group#downwards_member) and set operations can exceed the default limit due to internal CollectingDispatchStream buffering during Union/Intersection/Exclusion operations.
Fixes #3213
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