1 files changed, 113 insertions, 0 deletions

diff --git a/vendor/github.com/hashicorp/terraform/config/import_tree.go b/vendor/github.com/hashicorp/terraform/config/import_tree.go
new file mode 100644
index 0000000..37ec11a
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform/config/import_tree.go
@@ -0,0 +1,113 @@
+package config
+
+import (
+        "fmt"
+        "io"
+)
+
+// configurable is an interface that must be implemented by any configuration
+// formats of Terraform in order to return a *Config.
+type configurable interface {
+        Config() (*Config, error)
+}
+
+// importTree is the result of the first-pass load of the configuration
+// files. It is a tree of raw configurables and then any children (their
+// imports).
+//
+// An importTree can be turned into a configTree.
+type importTree struct {
+        Path     string
+        Raw      configurable
+        Children []*importTree
+}
+
+// This is the function type that must be implemented by the configuration
+// file loader to turn a single file into a configurable and any additional
+// imports.
+type fileLoaderFunc func(path string) (configurable, []string, error)
+
+// loadTree takes a single file and loads the entire importTree for that
+// file. This function detects what kind of configuration file it is an
+// executes the proper fileLoaderFunc.
+func loadTree(root string) (*importTree, error) {
+        var f fileLoaderFunc
+        switch ext(root) {
+        case ".tf", ".tf.json":
+                f = loadFileHcl
+        default:
+        }
+
+        if f == nil {
+                return nil, fmt.Errorf(
+                        "%s: unknown configuration format. Use '.tf' or '.tf.json' extension",
+                        root)
+        }
+
+        c, imps, err := f(root)
+        if err != nil {
+                return nil, err
+        }
+
+        children := make([]*importTree, len(imps))
+        for i, imp := range imps {
+                t, err := loadTree(imp)
+                if err != nil {
+                        return nil, err
+                }
+
+                children[i] = t
+        }
+
+        return &importTree{
+                Path:     root,
+                Raw:      c,
+                Children: children,
+        }, nil
+}
+
+// Close releases any resources we might be holding open for the importTree.
+//
+// This can safely be called even while ConfigTree results are alive. The
+// importTree is not bound to these.
+func (t *importTree) Close() error {
+        if c, ok := t.Raw.(io.Closer); ok {
+                c.Close()
+        }
+        for _, ct := range t.Children {
+                ct.Close()
+        }
+
+        return nil
+}
+
+// ConfigTree traverses the importTree and turns each node into a *Config
+// object, ultimately returning a *configTree.
+func (t *importTree) ConfigTree() (*configTree, error) {
+        config, err := t.Raw.Config()
+        if err != nil {
+                return nil, fmt.Errorf(
+                        "Error loading %s: %s",
+                        t.Path,
+                        err)
+        }
+
+        // Build our result
+        result := &configTree{
+                Path:   t.Path,
+                Config: config,
+        }
+
+        // Build the config trees for the children
+        result.Children = make([]*configTree, len(t.Children))
+        for i, ct := range t.Children {
+                t, err := ct.ConfigTree()
+                if err != nil {
+                        return nil, err
+                }
+
+                result.Children[i] = t
+        }
+
+        return result, nil
+}