Make the terraform harness only use the rwmutex if the plugin cache is enabled #240
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toastwaffle
requested review from
bobh66,
ytsarev,
negz,
ulucinar,
sergenyalcin and
turkenf
as code owners
bobh66
reviewed
Feb 1, 2024
|
I have now tested this locally with 4 workspaces with the plugin cache disabled doing long-running applies (GKE cluster creation) in parallel (where previously they'd have gotten stuck), and 4 other workspaces with the plugin cache enabled successfully reconciling some DNS records |
bobh66
approved these changes
Feb 6, 2024
|
@bobh66 does this qualify for an off-schedule release, or does this need to wait until the 29th? |
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Good question - seems like a good candidate for a backport - I'll see what the release team thinks |
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Successfully created backport PR #242 for |
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Description of your changes
As discussed in #239, this makes the terraform harness only take the lock if the plugin cache is enabled. If the plugin cache is not enabled, there is nothing to protect, and thus no need to take the lock.
This change also removes locking for all
terraform planoperations, on the assumption that conflicts are unlikely, and can easily be retried on a subsequent reconcile if they do happen.I have:
make reviewableto ensure this PR is ready for review. It returned a bunch of type errors which seemed unrelated to this change, but I ranmake testwhich did pass andmake buildwhich did succeed.How has this code been tested
Unit tests