terraform/backend/local/backend_local.go

131 lines
3.5 KiB
Go

package local
import (
"context"
"github.com/hashicorp/errwrap"
"github.com/hashicorp/terraform/backend"
"github.com/hashicorp/terraform/command/clistate"
"github.com/hashicorp/terraform/state"
"github.com/hashicorp/terraform/terraform"
"github.com/hashicorp/terraform/tfdiags"
)
// backend.Local implementation.
func (b *Local) Context(op *backend.Operation) (*terraform.Context, state.State, tfdiags.Diagnostics) {
// Make sure the type is invalid. We use this as a way to know not
// to ask for input/validate.
op.Type = backend.OperationTypeInvalid
if op.LockState {
op.StateLocker = clistate.NewLocker(context.Background(), op.StateLockTimeout, b.CLI, b.Colorize())
} else {
op.StateLocker = clistate.NewNoopLocker()
}
return b.context(op)
}
func (b *Local) context(op *backend.Operation) (*terraform.Context, state.State, tfdiags.Diagnostics) {
var diags tfdiags.Diagnostics
// Get the state.
s, err := b.State(op.Workspace)
if err != nil {
diags = diags.Append(errwrap.Wrapf("Error loading state: {{err}}", err))
return nil, nil, diags
}
if err := op.StateLocker.Lock(s, op.Type.String()); err != nil {
diags = diags.Append(errwrap.Wrapf("Error locking state: {{err}}", err))
return nil, nil, diags
}
if err := s.RefreshState(); err != nil {
diags = diags.Append(errwrap.Wrapf("Error loading state: {{err}}", err))
return nil, nil, diags
}
// 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.Targets = op.Targets
opts.UIInput = op.UIIn
// Load the configuration using the caller-provided configuration loader.
config, configDiags := op.ConfigLoader.LoadConfig(op.ConfigDir)
diags = diags.Append(configDiags)
if configDiags.HasErrors() {
return nil, nil, diags
}
opts.Config = config
variables, varDiags := backend.ParseVariableValues(op.Variables, config.Module.Variables)
diags = diags.Append(varDiags)
if diags.HasErrors() {
return nil, nil, diags
}
if op.Variables != nil {
opts.Variables = variables
}
// Load our state
// By the time we get here, the backend creation code in "command" took
// care of making s.State() return a state compatible with our plan,
// if any, so we can safely pass this value in both the plan context
// and new context cases below.
opts.State = s.State()
// Build the context
var tfCtx *terraform.Context
var ctxDiags tfdiags.Diagnostics
if op.Plan != nil {
tfCtx, ctxDiags = op.Plan.Context(&opts)
} else {
tfCtx, ctxDiags = terraform.NewContext(&opts)
}
diags = diags.Append(ctxDiags)
if ctxDiags.HasErrors() {
return nil, nil, diags
}
// 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
inputDiags := tfCtx.Input(mode)
diags = diags.Append(inputDiags)
if inputDiags.HasErrors() {
return nil, nil, diags
}
}
// If validation is enabled, validate
if b.OpValidation {
validateDiags := tfCtx.Validate()
diags = diags.Append(validateDiags)
}
}
return tfCtx, s, diags
}
const validateWarnHeader = `
There are warnings related to your configuration. If no errors occurred,
Terraform will continue despite these warnings. It is a good idea to resolve
these warnings in the near future.
Warnings:
`