mirror of
https://github.com/opentofu/opentofu.git
synced 2024-12-23 07:33:32 -06:00
114 lines
3.3 KiB
Go
114 lines
3.3 KiB
Go
// Copyright (c) The OpenTofu Authors
|
|
// SPDX-License-Identifier: MPL-2.0
|
|
// Copyright (c) 2023 HashiCorp, Inc.
|
|
// SPDX-License-Identifier: MPL-2.0
|
|
|
|
package tofu
|
|
|
|
import (
|
|
"log"
|
|
|
|
"github.com/opentofu/opentofu/internal/configs"
|
|
"github.com/opentofu/opentofu/internal/dag"
|
|
"github.com/opentofu/opentofu/internal/states"
|
|
)
|
|
|
|
// OrphanResourceInstanceTransformer is a GraphTransformer that adds orphaned
|
|
// resource instances to the graph. An "orphan" is an instance that is present
|
|
// in the state but belongs to a resource that is no longer present in the
|
|
// configuration.
|
|
//
|
|
// This is not the transformer that deals with "count orphans" (instances that
|
|
// are no longer covered by a resource's "count" or "for_each" setting); that's
|
|
// handled instead by OrphanResourceCountTransformer.
|
|
type OrphanResourceInstanceTransformer struct {
|
|
Concrete ConcreteResourceInstanceNodeFunc
|
|
|
|
// State is the global state. We require the global state to
|
|
// properly find module orphans at our path.
|
|
State *states.State
|
|
|
|
// Config is the root node in the configuration tree. We'll look up
|
|
// the appropriate note in this tree using the path in each node.
|
|
Config *configs.Config
|
|
|
|
// Do not apply this transformer
|
|
skip bool
|
|
}
|
|
|
|
func (t *OrphanResourceInstanceTransformer) Transform(g *Graph) error {
|
|
if t.skip {
|
|
return nil
|
|
}
|
|
|
|
if t.State == nil {
|
|
// If the entire state is nil, there can't be any orphans
|
|
return nil
|
|
}
|
|
if t.Config == nil {
|
|
// Should never happen: we can't be doing any OpenTofu operations
|
|
// without at least an empty configuration.
|
|
panic("OrphanResourceInstanceTransformer used without setting Config")
|
|
}
|
|
|
|
// Go through the modules and for each module transform in order
|
|
// to add the orphan.
|
|
for _, ms := range t.State.Modules {
|
|
if err := t.transform(g, ms); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (t *OrphanResourceInstanceTransformer) transform(g *Graph, ms *states.Module) error {
|
|
if ms == nil {
|
|
return nil
|
|
}
|
|
|
|
moduleAddr := ms.Addr
|
|
|
|
// Get the configuration for this module. The configuration might be
|
|
// nil if the module was removed from the configuration. This is okay,
|
|
// this just means that every resource is an orphan.
|
|
var m *configs.Module
|
|
if c := t.Config.DescendentForInstance(moduleAddr); c != nil {
|
|
m = c.Module
|
|
}
|
|
|
|
// An "orphan" is a resource that is in the state but not the configuration,
|
|
// so we'll walk the state resources and try to correlate each of them
|
|
// with a configuration block. Each orphan gets a node in the graph whose
|
|
// type is decided by t.Concrete.
|
|
//
|
|
// We don't handle orphans related to changes in the "count" and "for_each"
|
|
// pseudo-arguments here. They are handled by OrphanResourceCountTransformer.
|
|
for _, rs := range ms.Resources {
|
|
if m != nil {
|
|
if r := m.ResourceByAddr(rs.Addr.Resource); r != nil {
|
|
continue
|
|
}
|
|
}
|
|
|
|
for key, inst := range rs.Instances {
|
|
// Instances which have no current objects (only one or more
|
|
// deposed objects) will be taken care of separately
|
|
if inst.Current == nil {
|
|
continue
|
|
}
|
|
|
|
addr := rs.Addr.Instance(key)
|
|
abstract := NewNodeAbstractResourceInstance(addr)
|
|
var node dag.Vertex = abstract
|
|
if f := t.Concrete; f != nil {
|
|
node = f(abstract)
|
|
}
|
|
log.Printf("[TRACE] OrphanResourceInstanceTransformer: adding single-instance orphan node for %s", addr)
|
|
g.Add(node)
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|