terraform/backend/local/backend_local.go

93 lines
2.4 KiB
Go

package local
import (
"github.com/hashicorp/errwrap"
"github.com/hashicorp/go-multierror"
"github.com/hashicorp/terraform/backend"
"github.com/hashicorp/terraform/state"
"github.com/hashicorp/terraform/terraform"
)
// backend.Local implementation.
func (b *Local) Context(op *backend.Operation) (*terraform.Context, state.State, error) {
// Make sure the type is invalid. We use this as a way to know not
// to ask for input/validate.
op.Type = backend.OperationTypeInvalid
return b.context(op)
}
func (b *Local) context(op *backend.Operation) (*terraform.Context, state.State, error) {
// Get the state.
s, err := b.State()
if err != nil {
return nil, nil, errwrap.Wrapf("Error loading state: {{err}}", err)
}
if s, ok := s.(state.Locker); op.LockState && ok {
if err := s.Lock(op.Type.String()); err != nil {
return nil, nil, errwrap.Wrapf("Error locking state: {{err}}", err)
}
}
if err := s.RefreshState(); err != nil {
return nil, nil, errwrap.Wrapf("Error loading state: {{err}}", err)
}
// Initialize our context options
var opts terraform.ContextOpts
if v := b.ContextOpts; v != nil {
opts = *v
}
// Copy set options from the operation
opts.Destroy = op.Destroy
opts.Module = op.Module
opts.Targets = op.Targets
opts.UIInput = op.UIIn
if op.Variables != nil {
opts.Variables = op.Variables
}
// Load our state
opts.State = s.State()
// Build the context
var tfCtx *terraform.Context
if op.Plan != nil {
tfCtx, err = op.Plan.Context(&opts)
} else {
tfCtx, err = terraform.NewContext(&opts)
}
if err != nil {
return nil, nil, err
}
// If we have an operation, then we automatically do the input/validate
// here since every option requires this.
if op.Type != backend.OperationTypeInvalid {
// If input asking is enabled, then do that
if op.Plan == nil && b.OpInput {
mode := terraform.InputModeProvider
mode |= terraform.InputModeVar
mode |= terraform.InputModeVarUnset
if err := tfCtx.Input(mode); err != nil {
return nil, nil, errwrap.Wrapf("Error asking for user input: {{err}}", err)
}
}
// If validation is enabled, validate
if b.OpValidation {
// We ignore warnings here on purpose. We expect users to be listening
// to the terraform.Hook called after a validation.
_, es := tfCtx.Validate()
if len(es) > 0 {
return nil, nil, multierror.Append(nil, es...)
}
}
}
return tfCtx, s, nil
}