Showing Terraform outputs as "global" variables in the Ansible dynamic inventory json.

cli.go

@@ -7,19 +7,26 @@ import (
 )
 
 func cmdList(stdout io.Writer, stderr io.Writer, s *state) int {
-	groups := make(map[string][]string, 0)
+	groups := make(map[string]interface{}, 0)
 	for _, res := range s.resources() {
 		for _, grp := range res.Groups() {
+			tmpGroup := []string{}
 
 			_, ok := groups[grp]
-			if !ok {
-				groups[grp] = []string{}
+			if ok {
+				tmpGroup = groups[grp].([]string)
 			}
 
-			groups[grp] = append(groups[grp], res.Address())
+			tmpGroup = append(tmpGroup, res.Address())
+			groups[grp] = tmpGroup
 		}
 	}
 
+	groups["all"] = make(map[string]string, 0)
+	for _, out := range s.outputs() {
+		groups["all"].(map[string]string)[out.keyName] = out.value
+	}
+
 	return output(stdout, stderr, groups)
 }
 

fixtures/example.tfstate

@@ -6,7 +6,9 @@
             "path": [
                 "root"
             ],
-            "outputs": {},
+            "outputs": {
+                "datacenter": "mydc"
+            },
             "resources": {
                 "aws_instance.alpha.0": {
                     "type": "aws_instance",

output.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"fmt"
+)
+
+type Output struct {
+
+	// The keyName and value of the output
+	keyName string
+	value string
+}
+
+func NewOutput(keyName string, value string) (*Output, error) {
+
+	// TODO: Warn instead of silently ignore error?
+	if len(keyName) == 0 {
+		return nil, fmt.Errorf("couldn't parse keyName: %s", keyName)
+	}
+
+	return &Output{
+		keyName: keyName,
+		value: value,
+	}, nil
+}
+

parser.go

@@ -29,6 +29,20 @@ func (s *state) read(stateFile io.Reader) error {
 	return nil
 }
 
+// outputs returns a slice of the Outputs found in the statefile.
+func (s *state) outputs() []*Output {
+	inst := make([]*Output, 0)
+
+	for _, m := range s.Modules {
+		for k, v := range m.Outputs {
+			o, _ := NewOutput(k, v)
+			inst = append(inst, o)
+		}
+	}
+
+	return inst
+}
+
 // resources returns a slice of the Resources found in the statefile.
 func (s *state) resources() []*Resource {
 	inst := make([]*Resource, 0)
@@ -43,7 +57,6 @@ func (s *state) resources() []*Resource {
 			if err != nil {
 				continue
 			}
-
 			if r.IsSupported() {
 				inst = append(inst, r)
 			}
@@ -55,6 +68,7 @@ func (s *state) resources() []*Resource {
 
 type moduleState struct {
 	ResourceStates map[string]resourceState `json:"resources"`
+	Outputs map[string]string `json:"outputs"`
 }
 
 // resourceKeys returns a sorted slice of the key names of the resources in this