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call PersistState immediately when cancelling

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When the backend operation is cancelled, immediately call PersistState.
The is a high likelihood that the user is going to terminate the process
early if the provider doesn't return in a timely manner, so persist as
much state as possible.
This commit is contained in:
James Bardin 2017-05-25 09:29:51 -04:00
parent b73d037761
commit 9e4c0ff2ad
1 changed files with 18 additions and 0 deletions
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18
backend/local/backend_apply.go
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@ -126,6 +126,17 @@ func (b *Local) opApply(
b.CLI.Output("stopping apply operation...")
}
// try to force a PersistState just in case the process is terminated
// before we can complete.
if err := opState.PersistState(); err != nil {
// We can't error out from here, but warn the user if there was an error.
// If this isn't transient, we will catch it again below, and
// attempt to save the state another way.
if b.CLI != nil {
b.CLI.Error(fmt.Sprintf(earlyStateWriteErrorFmt, err))
}
}
// Stop execution
go tfCtx.Stop()
@ -270,3 +281,10 @@ importing each resource using its id from the target system.
This is a serious bug in Terraform and should be reported.
`
const earlyStateWriteErrorFmt = `Error saving current state: %s
Terraform encountered an error attempting to save the state before canceling
the current operation. Once the operation is complete another attempt will be
made to save the final state.
`