terraform/terraform/transform_removed_modules.go

45 lines
1.0 KiB
Go

package terraform
import (
"log"
"github.com/hashicorp/terraform/addrs"
"github.com/hashicorp/terraform/configs"
"github.com/hashicorp/terraform/states"
)
// RemovedModuleTransformer implements GraphTransformer to add nodes indicating
// when a module was removed from the configuration.
type RemovedModuleTransformer struct {
Config *configs.Config // root node in the config tree
State *states.State
}
func (t *RemovedModuleTransformer) Transform(g *Graph) error {
// nothing to remove if there's no state!
if t.State == nil {
return nil
}
removed := map[string]addrs.Module{}
for _, m := range t.State.Modules {
cc := t.Config.DescendentForInstance(m.Addr)
if cc != nil {
continue
}
removed[m.Addr.Module().String()] = m.Addr.Module()
log.Printf("[DEBUG] %s is no longer in configuration\n", m.Addr)
}
// add closers to collect any module instances we're removing
for _, modAddr := range removed {
closer := &nodeCloseModule{
Addr: modAddr,
}
g.Add(closer)
}
return nil
}