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Add e2e test infrastructure for the multicast publisher sentinel worker, including validator-metadata-service-mock container, sentinel container, and gRPC client for verifying publisher creation.
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The Solana RPC client requires the epochCredits field when deserializing vote account responses, causing the sentinel to fail on every poll cycle in e2e tests.
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Summary of Changes
TestE2E_Multicast_Publishertest that validates the full flow: sentinel discovers validators via the mock, creates multicast publisher subscriptions onchain, and the sentinel gRPC API reflects the correct stateDiff Breakdown
Mostly new test infrastructure (~93% additions), no changes to production code.
Key files (click to expand)
e2e/sentinel_multicast_publisher_test.go— e2e test for multicast publisher sentinel: sets up devnet with sentinel + mock, verifies publisher creatione2e/docker/validator-metadata-service-mock/main.go— mock service serving validator metadata API and Solana JSON-RPC (getVoteAccounts, getClusterNodes)e2e/internal/devnet/validator_metadata_service_mock.go— testcontainers wrapper for the validator metadata service mocke2e/internal/devnet/sentinel.go— testcontainers wrapper for the sentinel container with multicast publisher worker confige2e/internal/dzrpc/client.go— gRPC client for querying sentinel multicast publisher state in testse2e/internal/devnet/devnet.go— add sentinel + validator mock to devnet spec/lifecycle, add DumpContainerLogs helpere2e/internal/devnet/builder.go— add sentinel and validator-metadata-service-mock image buildsTesting Verification
TestE2E_Multicast_Publishervalidates the full sentinel multicast publisher flow end-to-end: devnet setup with sentinel container, validator discovery via mock metadata service, onchain publisher creation, and gRPC state verification