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36d0a50427
This is part of a general effort to move all of Terraform's non-library package surface under internal in order to reinforce that these are for internal use within Terraform only. If you were previously importing packages under this prefix into an external codebase, you could pin to an earlier release tag as an interim solution until you've make a plan to achieve the same functionality some other way.
104 lines
2.5 KiB
Go
104 lines
2.5 KiB
Go
package terraform
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import (
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"log"
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"github.com/hashicorp/terraform/internal/addrs"
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"github.com/hashicorp/terraform/internal/configs"
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"github.com/hashicorp/terraform/internal/dag"
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"github.com/hashicorp/terraform/internal/plans"
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)
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// OutputTransformer is a GraphTransformer that adds all the outputs
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// in the configuration to the graph.
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//
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// This is done for the apply graph builder even if dependent nodes
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// aren't changing since there is no downside: the state will be available
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// even if the dependent items aren't changing.
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type OutputTransformer struct {
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Config *configs.Config
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Changes *plans.Changes
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// if this is a planed destroy, root outputs are still in the configuration
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// so we need to record that we wish to remove them
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Destroy bool
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}
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func (t *OutputTransformer) Transform(g *Graph) error {
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return t.transform(g, t.Config)
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}
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func (t *OutputTransformer) transform(g *Graph, c *configs.Config) error {
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// If we have no config then there can be no outputs.
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if c == nil {
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return nil
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}
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// Transform all the children. We must do this first because
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// we can reference module outputs and they must show up in the
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// reference map.
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for _, cc := range c.Children {
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if err := t.transform(g, cc); err != nil {
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return err
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}
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}
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// Add outputs to the graph, which will be dynamically expanded
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// into NodeApplyableOutputs to reflect possible expansion
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// through the presence of "count" or "for_each" on the modules.
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var changes []*plans.OutputChangeSrc
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if t.Changes != nil {
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changes = t.Changes.Outputs
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}
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for _, o := range c.Module.Outputs {
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addr := addrs.OutputValue{Name: o.Name}
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var rootChange *plans.OutputChangeSrc
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for _, c := range changes {
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if c.Addr.Module.IsRoot() && c.Addr.OutputValue.Name == o.Name {
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rootChange = c
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}
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}
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destroy := t.Destroy
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if rootChange != nil {
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destroy = rootChange.Action == plans.Delete
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}
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// If this is a root output, we add the apply or destroy node directly,
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// as the root modules does not expand.
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var node dag.Vertex
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switch {
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case c.Path.IsRoot() && destroy:
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node = &NodeDestroyableOutput{
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Addr: addr.Absolute(addrs.RootModuleInstance),
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Config: o,
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}
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case c.Path.IsRoot():
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node = &NodeApplyableOutput{
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Addr: addr.Absolute(addrs.RootModuleInstance),
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Config: o,
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Change: rootChange,
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}
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default:
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node = &nodeExpandOutput{
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Addr: addr,
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Module: c.Path,
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Config: o,
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Changes: changes,
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Destroy: t.Destroy,
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}
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}
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log.Printf("[TRACE] OutputTransformer: adding %s as %T", o.Name, node)
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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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