forked from hashicorp/terraform
/
transform_orphan_output.go
53 lines (42 loc) · 1.15 KB
/
transform_orphan_output.go
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package terraform
import (
"log"
"github.com/hashicorp/terraform/config"
"github.com/hashicorp/terraform/config/module"
)
// OrphanOutputTransformer finds the outputs that aren't present
// in the given config that are in the state and adds them to the graph
// for deletion.
type OrphanOutputTransformer struct {
Module *module.Tree // Root module
State *State // State is the root state
}
func (t *OrphanOutputTransformer) Transform(g *Graph) error {
if t.State == nil {
log.Printf("[DEBUG] No state, no orphan outputs")
return nil
}
for _, ms := range t.State.Modules {
if err := t.transform(g, ms); err != nil {
return err
}
}
return nil
}
func (t *OrphanOutputTransformer) transform(g *Graph, ms *ModuleState) error {
if ms == nil {
return nil
}
path := normalizeModulePath(ms.Path)
// Get the config for this path, which is nil if the entire module has been
// removed.
var c *config.Config
if m := t.Module.Child(path[1:]); m != nil {
c = m.Config()
}
// add all the orphaned outputs to the graph
for _, n := range ms.RemovedOutputs(c) {
g.Add(&NodeOutputOrphan{OutputName: n, PathValue: path})
}
return nil
}