81 lines
1.8 KiB
Go
81 lines
1.8 KiB
Go
package terraform
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import (
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"errors"
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"github.com/hashicorp/terraform/config/module"
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"github.com/hashicorp/terraform/dag"
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)
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// FlatConfigTransformer is a GraphTransformer that adds the configuration
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// to the graph. The module used to configure this transformer must be
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// the root module.
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//
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// This transform adds the nodes but doesn't connect any of the references.
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// The ReferenceTransformer should be used for that.
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//
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// NOTE: In relation to ConfigTransformer: this is a newer generation config
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// transformer. It puts the _entire_ config into the graph (there is no
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// "flattening" step as before).
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type FlatConfigTransformer struct {
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Concrete ConcreteResourceNodeFunc // What to turn resources into
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Module *module.Tree
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}
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func (t *FlatConfigTransformer) Transform(g *Graph) error {
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// If no module, we do nothing
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if t.Module == nil {
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return nil
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}
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// If the module is not loaded, that is an error
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if !t.Module.Loaded() {
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return errors.New("module must be loaded")
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}
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return t.transform(g, t.Module)
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}
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func (t *FlatConfigTransformer) transform(g *Graph, m *module.Tree) error {
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// If no module, no problem
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if m == nil {
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return nil
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}
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// Transform all the children.
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for _, c := range m.Children() {
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if err := t.transform(g, c); err != nil {
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return err
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}
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}
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// Get the configuration for this module
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config := m.Config()
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// Write all the resources out
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for _, r := range config.Resources {
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// Grab the address for this resource
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addr, err := parseResourceAddressConfig(r)
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if err != nil {
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return err
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}
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addr.Path = m.Path()
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// Build the abstract resource. We have the config already so
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// we'll just pre-populate that.
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abstract := &NodeAbstractResource{
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Addr: addr,
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Config: r,
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}
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var node dag.Vertex = abstract
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if f := t.Concrete; f != nil {
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node = f(abstract)
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}
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g.Add(node)
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}
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return nil
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}
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