prometheus: prevent panic when incrmenting counter #146
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@lgfa29 as an alternative because this seems like such a weird case and a programmer error rather than a runtime error, what would you think about shipping a version of Nomad pinned to this branch to see if we can get reports on the error to fix the underlying cause? |
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Ah good idea. I will open a PR with this dependency update on Nomad tomorrow. I will probably rebase this as branch to |
The Prometheus Counter.Add() method panics if the value being added is negative. Even if care is taken by consumers to never pass a negative value the panic could still happen due to float conversion or overflow. This change prevents go-metrics from causing consumers to crash.
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This was referenced May 11, 2023
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Update `go-metrics` to v0.5.3 to pick hashicorp/go-metrics#146.
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Update `go-metrics` to v0.5.3 to pick hashicorp/go-metrics#146.
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Update `go-metrics` to v0.5.3 to pick hashicorp/go-metrics#146.
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Update `go-metrics` to v0.5.3 to pick hashicorp/go-metrics#146.
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Update `go-metrics` to v0.5.3 to pick hashicorp/go-metrics#146.
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Update `go-metrics` to v0.5.3 to pick hashicorp/go-metrics#146.
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Update `go-metrics` to v0.5.3 to pick hashicorp/go-metrics#146.
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The Prometheus Counter.Add() method panics if the value being added is negative. Even if care is taken by consumers to never pass a negative value the panic could still happen due to float conversion or overflow.
This change prevents go-metrics from causing consumers to crash.
A panic like this has been reported in hashicorp/nomad#15861, but, as far as I can tell, Nomad only calls
IncrCounterandIncrCounterWithLabelsusing positive values.