1 files changed, 24 insertions, 0 deletions
diff --git a/vendor/github.com/hashicorp/terraform/terraform/path.go b/vendor/github.com/hashicorp/terraform/terraform/path.go
new file mode 100644
index 00000000..ca99685a
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform/terraform/path.go
@@ -0,0 +1,24 @@
+package terraform
+
+import (
+	"crypto/md5"
+	"encoding/hex"
+)
+
+// PathCacheKey returns a cache key for a module path.
+//
+// TODO: test
+func PathCacheKey(path []string) string {
+	// There is probably a better way to do this, but this is working for now.
+	// We just create an MD5 hash of all the MD5 hashes of all the path
+	// elements. This gets us the property that it is unique per ordering.
+	hash := md5.New()
+	for _, p := range path {
+		single := md5.Sum([]byte(p))
+		if _, err := hash.Write(single[:]); err != nil {
+			panic(err)
+		}
+	}
+
+	return hex.EncodeToString(hash.Sum(nil))
+}