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prisma-risk / tsoracle / 26302662986
95%

Build:
DEFAULT BRANCH: main
Ran 22 May 2026 05:38PM UTC
Jobs 1
Files 54
Run time 1min
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22 May 2026 05:34PM UTC coverage: 95.911% (-0.09%) from 96.004%
26302662986

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fix(client): surface driver-task death as DriverGone (#118)

The client driver previously collapsed three causally distinct failure
modes into `ClientError::NoReachableEndpoints`: a transport-layer
collapse, the driver task's `mpsc::Receiver` going away, and a
post-send `oneshot::Sender` drop. The latter two only happen when the
in-process driver is dead (typically a panic in the user-supplied RPC
closure), and reporting them as "no reachable endpoints" sent
operators hunting the network for a local bug.

This change adds `ClientError::DriverGone` for the local-driver-dead
case, wraps the spawned `driver_task` in a small supervisor that logs
its `JoinError`, and replaces the previously-swallowed `JoinError` arm
in the chunk-task select with a `tracing::error!` so a panicked RPC
closure no longer disappears without a breadcrumb. The matching
`is_transient` matches in `benchmarks/minimal` and `benchmarks/stress`
are extended to bucket the new variant with the other non-transient
errors.

Also fixes a smaller signal-loss in `decode_leader_hint`: the three
`.ok()?` discards now route to feature-gated logging — `error!` on
the impossible-but-defensive const-key failure, `debug!` on
wire-malformed trailer bytes or protobuf decode failure.

78 of 89 new or added lines in 5 files covered. (87.64%)

7154 of 7459 relevant lines covered (95.91%)

628530.54 hits per line

Uncovered Changes

Lines Coverage ∆ File
6
95.57
-2.05% crates/tsoracle-client/src/leader_resolved.rs
4
84.62
crates/tsoracle-client/src/driver_supervisor.rs
1
96.59
-0.1% crates/tsoracle-client/src/driver.rs
Jobs
ID Job ID Ran Files Coverage
1 26302662986.1 22 May 2026 05:38PM UTC 54
95.91
GitHub Action Run
Source Files on build 26302662986
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  • Changed 6
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  • Coverage Changed 6
Coverage ∆ File Lines Relevant Covered Missed Hits/Line
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