1 files changed, 65 insertions, 0 deletions
diff --git a/vendor/github.com/hashicorp/terraform/terraform/transform_state.go b/vendor/github.com/hashicorp/terraform/terraform/transform_state.go
new file mode 100644
index 00000000..471cd746
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform/terraform/transform_state.go
@@ -0,0 +1,65 @@
+package terraform
+
+import (
+	"fmt"
+	"log"
+
+	"github.com/hashicorp/terraform/dag"
+)
+
+// 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 {
+	Concrete ConcreteResourceNodeFunc
+
+	State *State
+}
+
+func (t *StateTransformer) Transform(g *Graph) error {
+	// If the state is nil or empty (nil is empty) then do nothing
+	if t.State.Empty() {
+		return nil
+	}
+
+	// Go through all the modules in the diff.
+	log.Printf("[TRACE] StateTransformer: starting")
+	var nodes []dag.Vertex
+	for _, ms := range t.State.Modules {
+		log.Printf("[TRACE] StateTransformer: Module: %v", ms.Path)
+
+		// Go through all the resources in this module.
+		for name, rs := range ms.Resources {
+			log.Printf("[TRACE] StateTransformer: Resource %q: %#v", name, rs)
+
+			// Add the resource to the graph
+			addr, err := parseResourceAddressInternal(name)
+			if err != nil {
+				panic(fmt.Sprintf(
+					"Error parsing internal name, this is a bug: %q", name))
+			}
+
+			// Very important: add the module path for this resource to
+			// the address. Remove "root" from it.
+			addr.Path = ms.Path[1:]
+
+			// Add the resource to the graph
+			abstract := &NodeAbstractResource{Addr: addr}
+			var node dag.Vertex = abstract
+			if f := t.Concrete; f != nil {
+				node = f(abstract)
+			}
+
+			nodes = append(nodes, node)
+		}
+	}
+
+	// Add all the nodes to the graph
+	for _, n := range nodes {
+		g.Add(n)
+	}
+
+	return nil
+}