fix: auto-pin race condition on go.mod file #521
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When using `-toolexec` mode, the auto-pin process may be initiated by multiple concurrent executions of the `toolexec` proxy. In such cases, there is a race condition on access to `go.mod` and `orchestrion.tool.go`, which often results in `go mod tidy` failing due to it detecting concurrent modifications of the `go.mod` (it may also result in corrupt content of the `orchestrion.tool.go` file). This addresses the issue by having the auto-pin process acquire an advisory write lock on the `go.mod` file, making sure all attempts are properly synchronized, and only one attempt tries to modify the file at a time.
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Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## main #521 +/- ##
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Coverage ? 69.26%
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Files ? 105
Lines ? 5446
Branches ? 0
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Hits ? 3772
Misses ? 1231
Partials ? 443
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When using
-toolexecmode, the auto-pin process may be initiated by multiple concurrent executions of thetoolexecproxy. In such cases, there is a race condition on access togo.modandorchestrion.tool.go, which often results ingo mod tidyfailing due to it detecting concurrent modifications of thego.mod(it may also result in corrupt content of theorchestrion.tool.gofile).This addresses the issue by having the auto-pin process acquire an advisory write lock on the
go.modfile, making sure all attempts are properly synchronized, and only one attempt tries to modify the file at a time.Fixes #491