73 lines
2.3 KiB
Go
73 lines
2.3 KiB
Go
package terraform
|
|
|
|
import (
|
|
"log"
|
|
|
|
"github.com/hashicorp/terraform/internal/states"
|
|
)
|
|
|
|
// StateTransformer is a GraphTransformer that adds the elements of
|
|
// the state to the graph.
|
|
//
|
|
// This transform is used for example by the DestroyPlanGraphBuilder to ensure
|
|
// that only resources that are in the state are represented in the graph.
|
|
type StateTransformer struct {
|
|
// ConcreteCurrent and ConcreteDeposed are used to specialize the abstract
|
|
// resource instance nodes that this transformer will create.
|
|
//
|
|
// If either of these is nil, the objects of that type will be skipped and
|
|
// not added to the graph at all. It doesn't make sense to use this
|
|
// transformer without setting at least one of these, since that would
|
|
// skip everything and thus be a no-op.
|
|
ConcreteCurrent ConcreteResourceInstanceNodeFunc
|
|
ConcreteDeposed ConcreteResourceInstanceDeposedNodeFunc
|
|
|
|
State *states.State
|
|
}
|
|
|
|
func (t *StateTransformer) Transform(g *Graph) error {
|
|
if t.State == nil {
|
|
log.Printf("[TRACE] StateTransformer: state is nil, so nothing to do")
|
|
return nil
|
|
}
|
|
|
|
switch {
|
|
case t.ConcreteCurrent != nil && t.ConcreteDeposed != nil:
|
|
log.Printf("[TRACE] StateTransformer: creating nodes for both current and deposed instance objects")
|
|
case t.ConcreteCurrent != nil:
|
|
log.Printf("[TRACE] StateTransformer: creating nodes for current instance objects only")
|
|
case t.ConcreteDeposed != nil:
|
|
log.Printf("[TRACE] StateTransformer: creating nodes for deposed instance objects only")
|
|
default:
|
|
log.Printf("[TRACE] StateTransformer: pointless no-op call, creating no nodes at all")
|
|
}
|
|
|
|
for _, ms := range t.State.Modules {
|
|
for _, rs := range ms.Resources {
|
|
resourceAddr := rs.Addr
|
|
|
|
for key, is := range rs.Instances {
|
|
addr := resourceAddr.Instance(key)
|
|
|
|
if obj := is.Current; obj != nil && t.ConcreteCurrent != nil {
|
|
abstract := NewNodeAbstractResourceInstance(addr)
|
|
node := t.ConcreteCurrent(abstract)
|
|
g.Add(node)
|
|
log.Printf("[TRACE] StateTransformer: added %T for %s current object", node, addr)
|
|
}
|
|
|
|
if t.ConcreteDeposed != nil {
|
|
for dk := range is.Deposed {
|
|
abstract := NewNodeAbstractResourceInstance(addr)
|
|
node := t.ConcreteDeposed(abstract, dk)
|
|
g.Add(node)
|
|
log.Printf("[TRACE] StateTransformer: added %T for %s deposed object %s", node, addr, dk)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|