terraform/terraform/node_resource_plan_orphan.go

127 lines
4.3 KiB
Go

package terraform
import (
"fmt"
"log"
"github.com/hashicorp/terraform/addrs"
"github.com/hashicorp/terraform/plans"
"github.com/hashicorp/terraform/states"
"github.com/hashicorp/terraform/tfdiags"
)
// NodePlannableResourceInstanceOrphan represents a resource that is "applyable":
// it is ready to be applied and is represented by a diff.
type NodePlannableResourceInstanceOrphan struct {
*NodeAbstractResourceInstance
skipRefresh bool
}
var (
_ GraphNodeModuleInstance = (*NodePlannableResourceInstanceOrphan)(nil)
_ GraphNodeReferenceable = (*NodePlannableResourceInstanceOrphan)(nil)
_ GraphNodeReferencer = (*NodePlannableResourceInstanceOrphan)(nil)
_ GraphNodeConfigResource = (*NodePlannableResourceInstanceOrphan)(nil)
_ GraphNodeResourceInstance = (*NodePlannableResourceInstanceOrphan)(nil)
_ GraphNodeAttachResourceConfig = (*NodePlannableResourceInstanceOrphan)(nil)
_ GraphNodeAttachResourceState = (*NodePlannableResourceInstanceOrphan)(nil)
_ GraphNodeExecutable = (*NodePlannableResourceInstanceOrphan)(nil)
_ GraphNodeProviderConsumer = (*NodePlannableResourceInstanceOrphan)(nil)
)
func (n *NodePlannableResourceInstanceOrphan) Name() string {
return n.ResourceInstanceAddr().String() + " (orphan)"
}
// GraphNodeExecutable
func (n *NodePlannableResourceInstanceOrphan) Execute(ctx EvalContext, op walkOperation) tfdiags.Diagnostics {
addr := n.ResourceInstanceAddr()
// Eval info is different depending on what kind of resource this is
switch addr.Resource.Resource.Mode {
case addrs.ManagedResourceMode:
return n.managedResourceExecute(ctx)
case addrs.DataResourceMode:
return n.dataResourceExecute(ctx)
default:
panic(fmt.Errorf("unsupported resource mode %s", n.Config.Mode))
}
}
func (n *NodePlannableResourceInstanceOrphan) ProvidedBy() (addr addrs.ProviderConfig, exact bool) {
if n.Addr.Resource.Resource.Mode == addrs.DataResourceMode {
// indicate that this node does not require a configured provider
return nil, true
}
return n.NodeAbstractResourceInstance.ProvidedBy()
}
func (n *NodePlannableResourceInstanceOrphan) dataResourceExecute(ctx EvalContext) tfdiags.Diagnostics {
// A data source that is no longer in the config is removed from the state
log.Printf("[TRACE] NodePlannableResourceInstanceOrphan: removing state object for %s", n.Addr)
// we need to update both the refresh state to refresh the current data
// source, and the working state for plan-time evaluations.
refreshState := ctx.RefreshState()
refreshState.SetResourceInstanceCurrent(n.Addr, nil, n.ResolvedProvider)
workingState := ctx.State()
workingState.SetResourceInstanceCurrent(n.Addr, nil, n.ResolvedProvider)
return nil
}
func (n *NodePlannableResourceInstanceOrphan) managedResourceExecute(ctx EvalContext) (diags tfdiags.Diagnostics) {
addr := n.ResourceInstanceAddr()
// Declare a bunch of variables that are used for state during
// evaluation. These are written to by-address below.
var change *plans.ResourceInstanceChange
var state *states.ResourceInstanceObject
var err error
state, err = n.readResourceInstanceState(ctx, addr)
diags = diags.Append(err)
if diags.HasErrors() {
return diags
}
if !n.skipRefresh {
// Refresh this instance even though it is going to be destroyed, in
// order to catch missing resources. If this is a normal plan,
// providers expect a Read request to remove missing resources from the
// plan before apply, and may not handle a missing resource during
// Delete correctly. If this is a simple refresh, Terraform is
// expected to remove the missing resource from the state entirely
state, refreshDiags := n.refresh(ctx, state)
diags = diags.Append(refreshDiags)
if diags.HasErrors() {
return diags
}
diags = diags.Append(n.writeResourceInstanceState(ctx, state, n.Dependencies, refreshState))
if diags.HasErrors() {
return diags
}
}
change, destroyPlanDiags := n.planDestroy(ctx, state, "")
diags = diags.Append(destroyPlanDiags)
if diags.HasErrors() {
return diags
}
diags = diags.Append(n.checkPreventDestroy(change))
if diags.HasErrors() {
return diags
}
diags = diags.Append(n.writeChange(ctx, change, ""))
if diags.HasErrors() {
return diags
}
diags = diags.Append(n.writeResourceInstanceState(ctx, nil, n.Dependencies, workingState))
return diags
}