101 lines
2.5 KiB
Go
101 lines
2.5 KiB
Go
package local
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import (
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"context"
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"fmt"
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"log"
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"os"
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"strings"
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"github.com/hashicorp/errwrap"
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"github.com/hashicorp/terraform/backend"
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"github.com/hashicorp/terraform/config/module"
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"github.com/hashicorp/terraform/terraform"
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)
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func (b *Local) opRefresh(
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stopCtx context.Context,
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cancelCtx context.Context,
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op *backend.Operation,
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runningOp *backend.RunningOperation) {
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// Check if our state exists if we're performing a refresh operation. We
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// only do this if we're managing state with this backend.
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if b.Backend == nil {
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if _, err := os.Stat(b.StatePath); err != nil {
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if os.IsNotExist(err) {
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err = nil
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}
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if err != nil {
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runningOp.Err = fmt.Errorf(
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"There was an error reading the Terraform state that is needed\n"+
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"for refreshing. The path and error are shown below.\n\n"+
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"Path: %s\n\nError: %s",
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b.StatePath, err)
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return
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}
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}
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}
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// If we have no config module given to use, create an empty tree to
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// avoid crashes when Terraform.Context is initialized.
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if op.Module == nil {
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op.Module = module.NewEmptyTree()
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}
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// Get our context
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tfCtx, opState, err := b.context(op)
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if err != nil {
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runningOp.Err = err
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return
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}
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// Set our state
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runningOp.State = opState.State()
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if runningOp.State.Empty() || !runningOp.State.HasResources() {
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if b.CLI != nil {
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b.CLI.Output(b.Colorize().Color(
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strings.TrimSpace(refreshNoState) + "\n"))
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}
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}
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// Perform the refresh in a goroutine so we can be interrupted
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var newState *terraform.State
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var refreshErr error
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doneCh := make(chan struct{})
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go func() {
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defer close(doneCh)
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newState, refreshErr = tfCtx.Refresh()
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log.Printf("[INFO] backend/local: refresh calling Refresh")
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}()
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if b.opWait(doneCh, stopCtx, cancelCtx, tfCtx, opState) {
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return
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}
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// write the resulting state to the running op
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runningOp.State = newState
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if refreshErr != nil {
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runningOp.Err = errwrap.Wrapf("Error refreshing state: {{err}}", refreshErr)
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return
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}
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// Write and persist the state
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if err := opState.WriteState(newState); err != nil {
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runningOp.Err = errwrap.Wrapf("Error writing state: {{err}}", err)
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return
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}
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if err := opState.PersistState(); err != nil {
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runningOp.Err = errwrap.Wrapf("Error saving state: {{err}}", err)
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return
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}
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}
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const refreshNoState = `
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[reset][bold][yellow]Empty or non-existent state file.[reset][yellow]
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Refresh will do nothing. Refresh does not error or return an erroneous
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exit status because many automation scripts use refresh, plan, then apply
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and may not have a state file yet for the first run.
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`
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