terraform: RootVariableTransform

This commit is contained in:
Mitchell Hashimoto 2016-09-16 14:36:35 -07:00
parent 993c29f34a
commit 0463ad74a8
No known key found for this signature in database
GPG Key ID: 744E147AA52F5B0A
4 changed files with 65 additions and 0 deletions

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@ -63,6 +63,9 @@ func (b *ApplyGraphBuilder) Steps() []GraphTransformer {
&MissingProvisionerTransformer{Provisioners: b.Provisioners},
&ProvisionerTransformer{},
// Add root variables
&RootVariableTransformer{Module: b.Module},
// Add module variables
&ModuleVariableTransformer{Module: b.Module},

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@ -0,0 +1,22 @@
package terraform
import (
"fmt"
"github.com/hashicorp/terraform/config"
)
// NodeRootVariable represents a root variable input.
type NodeRootVariable struct {
Config *config.Variable
}
func (n *NodeRootVariable) Name() string {
result := fmt.Sprintf("var.%s", n.Config.Name)
return result
}
// GraphNodeReferenceable
func (n *NodeRootVariable) ReferenceableName() []string {
return []string{n.Name()}
}

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@ -0,0 +1,40 @@
package terraform
import (
"github.com/hashicorp/terraform/config/module"
)
// RootVariableTransformer is a GraphTransformer that adds all the root
// variables to the graph.
//
// Root variables are currently no-ops but they must be added to the
// graph since downstream things that depend on them must be able to
// reach them.
type RootVariableTransformer struct {
Module *module.Tree
}
func (t *RootVariableTransformer) Transform(g *Graph) error {
// If no config, no variables
if t.Module == nil {
return nil
}
// If we have no vars, we're done!
vars := t.Module.Config().Variables
if len(vars) == 0 {
return nil
}
// Add all variables here
for _, v := range vars {
node := &NodeRootVariable{
Config: v,
}
// Add it!
g.Add(node)
}
return nil
}