databricks-cli/bundle/deploy/terraform/plan.go

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package terraform
import (
"context"
"fmt"
"path/filepath"
"github.com/databricks/cli/bundle"
"github.com/databricks/cli/libs/cmdio"
"github.com/databricks/cli/libs/terraform"
"github.com/hashicorp/terraform-exec/tfexec"
)
type PlanGoal string
var (
PlanDeploy = PlanGoal("deploy")
PlanDestroy = PlanGoal("destroy")
)
type plan struct {
goal PlanGoal
}
func (p *plan) Name() string {
return "terraform.Plan"
}
func (p *plan) Apply(ctx context.Context, b *bundle.Bundle) ([]bundle.Mutator, error) {
tf := b.Terraform
if tf == nil {
return nil, fmt.Errorf("terraform not initialized")
}
cmdio.LogString(ctx, "Starting plan computation")
err := tf.Init(ctx, tfexec.Upgrade(true))
if err != nil {
return nil, fmt.Errorf("terraform init: %w", err)
}
// Persist computed plan
tfDir, err := Dir(b)
if err != nil {
return nil, err
}
planPath := filepath.Join(tfDir, "plan")
destroy := p.goal == PlanDestroy
notEmpty, err := tf.Plan(ctx, tfexec.Destroy(destroy), tfexec.Out(planPath))
if err != nil {
return nil, err
}
// Set plan in main bundle struct for downstream mutators
b.Plan = &terraform.Plan{
Path: planPath,
ConfirmApply: b.AutoApprove,
IsEmpty: !notEmpty,
}
cmdio.LogString(ctx, fmt.Sprintf("Planning complete and persisted at %s\n", planPath))
return nil, nil
}
// Plan returns a [bundle.Mutator] that runs the equivalent of `terraform plan -out ./plan`
// from the bundle's ephemeral working directory for Terraform.
func Plan(goal PlanGoal) bundle.Mutator {
return &plan{
goal: goal,
}
}