opentofu/terraform/transform_provider_disable.go
Mitchell Hashimoto e4ef1fe553
terraform: disable providers in new apply graph
This adds the proper logic for "disabling" providers to the new apply
graph: interolating and storing the config for inheritance but not
actually initializing and configuring the provider.

This is important since parent modules will often contain incomplete
provider configurations for the purpose of inheritance that would error
if they were actually attempted to be configured (since they're
incomplete). If the provider is not used, it should be "disabled".
2016-10-19 14:54:00 -07:00

51 lines
1.2 KiB
Go

package terraform
import (
"fmt"
"github.com/hashicorp/terraform/dag"
)
// DisableProviderTransformer "disables" any providers that are not actually
// used by anything. This avoids the provider being initialized and configured.
// This both saves resources but also avoids errors since configuration
// may imply initialization which may require auth.
type DisableProviderTransformer struct{}
func (t *DisableProviderTransformer) Transform(g *Graph) error {
for _, v := range g.Vertices() {
// We only care about providers
pn, ok := v.(GraphNodeProvider)
if !ok || pn.ProviderName() == "" {
continue
}
// If we have dependencies, then don't disable
if g.UpEdges(v).Len() > 0 {
continue
}
// Get the path
var path []string
if pn, ok := v.(GraphNodeSubPath); ok {
path = pn.Path()
}
// Disable the provider by replacing it with a "disabled" provider
disabled := &NodeDisabledProvider{
NodeAbstractProvider: &NodeAbstractProvider{
NameValue: pn.ProviderName(),
PathValue: path,
},
}
if !g.Replace(v, disabled) {
panic(fmt.Sprintf(
"vertex disappeared from under us: %s",
dag.VertexName(v)))
}
}
return nil
}