110 lines
2.8 KiB
Go
110 lines
2.8 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 planned 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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// Refresh-only mode means that any failing output preconditions are
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// reported as warnings rather than errors
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RefreshOnly 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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RefreshOnly: t.RefreshOnly,
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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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RefreshOnly: t.RefreshOnly,
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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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