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de7b834de7
Because we currently rely on the ReferenceTransformer to introduce the necessary edges between local/output values and resource destroy nodes, we must include the destroy phase of any resource we depend on in the references of these. This works in conjunction with the changes in the prior commit to restore correct handling of dependencies for local and output values during destroy. With the current design, several seemingly-separate parts of the code must all coincidentally agree with one another for destroy edges to be created properly, which makes this code very hard to maintain. In future we should refactor this so that ReferenceTransformer doesn't create edges for destroy nodes at all, and have _all_ destroy edges (including create_before_destroy) be dealt with in the single DestroyEdgeTransformer, where they can be maintained and unit tested together.
71 lines
1.6 KiB
Go
71 lines
1.6 KiB
Go
package terraform
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import (
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"github.com/hashicorp/terraform/addrs"
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"github.com/hashicorp/terraform/configs"
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"github.com/hashicorp/terraform/dag"
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"github.com/hashicorp/terraform/lang"
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)
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// NodeLocal represents a named local value in a particular module.
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//
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// Local value nodes only have one operation, common to all walk types:
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// evaluate the result and place it in state.
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type NodeLocal struct {
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Addr addrs.AbsLocalValue
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Config *configs.Local
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}
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var (
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_ GraphNodeSubPath = (*NodeLocal)(nil)
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_ RemovableIfNotTargeted = (*NodeLocal)(nil)
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_ GraphNodeReferenceable = (*NodeLocal)(nil)
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_ GraphNodeReferencer = (*NodeLocal)(nil)
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_ GraphNodeEvalable = (*NodeLocal)(nil)
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_ dag.GraphNodeDotter = (*NodeLocal)(nil)
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)
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func (n *NodeLocal) Name() string {
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return n.Addr.String()
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}
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// GraphNodeSubPath
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func (n *NodeLocal) Path() addrs.ModuleInstance {
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return n.Addr.Module
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}
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// RemovableIfNotTargeted
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func (n *NodeLocal) RemoveIfNotTargeted() bool {
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return true
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}
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// GraphNodeReferenceable
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func (n *NodeLocal) ReferenceableAddrs() []addrs.Referenceable {
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return []addrs.Referenceable{n.Addr.LocalValue}
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}
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// GraphNodeReferencer
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func (n *NodeLocal) References() []*addrs.Reference {
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refs, _ := lang.ReferencesInExpr(n.Config.Expr)
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return appendResourceDestroyReferences(refs)
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}
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// GraphNodeEvalable
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func (n *NodeLocal) EvalTree() EvalNode {
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return &EvalLocal{
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Addr: n.Addr.LocalValue,
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Expr: n.Config.Expr,
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}
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}
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// dag.GraphNodeDotter impl.
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func (n *NodeLocal) DotNode(name string, opts *dag.DotOpts) *dag.DotNode {
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return &dag.DotNode{
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Name: name,
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Attrs: map[string]string{
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"label": n.Name(),
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"shape": "note",
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},
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}
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}
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