opentofu/terraform/node_resource_plan_orphan.go
Martin Atkins fb70eaa7d1 core: EvalDiffDestroy only update state if requested
The earlier change 5f07201a made it so that the state is always rewritten
by EvalDiffDestroy, but that was too disruptive to other users of
EvalDiffDestroy.

Now we follow the lead of EvalDiff and have a separate pointer for the
_output_ state, which allows the caller to opt in to having its state
pointer updated to reflect the new (nil) state.

NodePlannableResourceInstanceOrphan is the only caller that currently opts
in to this, since that was the focus of 5f07201a. We may need to make a
similar change to other plannable resource destroy nodes, but we'll wait
to see if that needs to be done in a subsequent commit.
2018-10-16 18:49:20 -07:00

71 lines
2.1 KiB
Go

package terraform
// NodePlannableResourceInstanceOrphan represents a resource that is "applyable":
// it is ready to be applied and is represented by a diff.
type NodePlannableResourceInstanceOrphan struct {
*NodeAbstractResourceInstance
}
var (
_ GraphNodeSubPath = (*NodePlannableResourceInstanceOrphan)(nil)
_ GraphNodeReferenceable = (*NodePlannableResourceInstanceOrphan)(nil)
_ GraphNodeReferencer = (*NodePlannableResourceInstanceOrphan)(nil)
_ GraphNodeResource = (*NodePlannableResourceInstanceOrphan)(nil)
_ GraphNodeResourceInstance = (*NodePlannableResourceInstanceOrphan)(nil)
_ GraphNodeAttachResourceConfig = (*NodePlannableResourceInstanceOrphan)(nil)
_ GraphNodeAttachResourceState = (*NodePlannableResourceInstanceOrphan)(nil)
_ GraphNodeEvalable = (*NodePlannableResourceInstanceOrphan)(nil)
)
var (
_ GraphNodeEvalable = (*NodePlannableResourceInstanceOrphan)(nil)
)
func (n *NodePlannableResourceInstanceOrphan) Name() string {
return n.ResourceInstanceAddr().String() + " (orphan)"
}
// GraphNodeEvalable
func (n *NodePlannableResourceInstanceOrphan) EvalTree() EvalNode {
addr := n.ResourceInstanceAddr()
// State still uses legacy-style internal ids, so we need to shim to get
// a suitable key to use.
stateId := NewLegacyResourceInstanceAddress(addr).stateId()
// Declare a bunch of variables that are used for state during
// evaluation. Most of this are written to by-address below.
var diff *InstanceDiff
var state *InstanceState
return &EvalSequence{
Nodes: []EvalNode{
&EvalReadState{
Name: stateId,
Output: &state,
},
&EvalDiffDestroy{
Addr: addr.Resource,
State: &state,
Output: &diff,
OutputState: &state, // Will point to a nil state after this complete, signalling destroyed
},
&EvalCheckPreventDestroy{
Addr: addr.Resource,
Config: n.Config,
Diff: &diff,
},
&EvalWriteDiff{
Name: stateId,
Diff: &diff,
},
&EvalWriteState{
Name: stateId,
ResourceType: addr.Resource.Resource.Type,
Provider: n.ResolvedProvider,
State: &state,
},
},
}
}