72 lines
1.9 KiB
Go
72 lines
1.9 KiB
Go
package terraform
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import (
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"github.com/hashicorp/terraform/configs"
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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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Config *configs.Config
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}
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func (t *FlatConfigTransformer) Transform(g *Graph) error {
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// We have nothing to do if there is no configuration.
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if t.Config == nil {
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return nil
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}
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return t.transform(g, t.Config)
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}
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func (t *FlatConfigTransformer) transform(g *Graph, config *configs.Config) error {
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// If we have no configuration then there's nothing to do.
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if config == 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 config.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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module := config.Module
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// For now we assume that each module call produces only one module
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// instance with no key, since we don't yet support "count" and "for_each"
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// on modules.
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// FIXME: As part of supporting "count" and "for_each" on modules, rework
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// this so that we'll "expand" the module call first and then create graph
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// nodes for each module instance separately.
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instPath := config.Path.UnkeyedInstanceShim()
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for _, r := range module.ManagedResources {
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addr := r.Addr().Absolute(instPath)
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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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// Grab the address for this resource
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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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