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98b323d815
The TargetsTransformer ignored resource indices before expansion could happen, but was not handling module indices. Ensure that we collapse all pre-expansion addresses to "configuration" addresses, with no module or resource keys.
117 lines
3.9 KiB
Go
117 lines
3.9 KiB
Go
package terraform
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import (
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"log"
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"github.com/hashicorp/terraform/addrs"
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"github.com/hashicorp/terraform/dag"
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"github.com/hashicorp/terraform/lang"
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)
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// nodeExpandApplyableResource handles the first layer of resource
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// expansion during apply. Even though the resource instances themselves are
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// already expanded from the plan, we still need to expand the
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// NodeApplyableResource nodes into their respective modules.
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type nodeExpandApplyableResource struct {
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*NodeAbstractResource
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}
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var (
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_ GraphNodeDynamicExpandable = (*nodeExpandApplyableResource)(nil)
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_ GraphNodeReferenceable = (*nodeExpandApplyableResource)(nil)
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_ GraphNodeReferencer = (*nodeExpandApplyableResource)(nil)
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_ GraphNodeConfigResource = (*nodeExpandApplyableResource)(nil)
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_ GraphNodeAttachResourceConfig = (*nodeExpandApplyableResource)(nil)
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_ graphNodeExpandsInstances = (*nodeExpandApplyableResource)(nil)
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_ GraphNodeTargetable = (*nodeExpandApplyableResource)(nil)
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)
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func (n *nodeExpandApplyableResource) expandsInstances() {}
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func (n *nodeExpandApplyableResource) References() []*addrs.Reference {
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return (&NodeApplyableResource{NodeAbstractResource: n.NodeAbstractResource}).References()
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}
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func (n *nodeExpandApplyableResource) Name() string {
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return n.NodeAbstractResource.Name() + " (expand)"
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}
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func (n *nodeExpandApplyableResource) DynamicExpand(ctx EvalContext) (*Graph, error) {
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var g Graph
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expander := ctx.InstanceExpander()
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moduleInstances := expander.ExpandModule(n.Addr.Module)
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var resources []addrs.AbsResource
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for _, module := range moduleInstances {
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resAddr := n.Addr.Resource.Absolute(module)
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resources = append(resources, resAddr)
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g.Add(&NodeApplyableResource{
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NodeAbstractResource: n.NodeAbstractResource,
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Addr: n.Addr.Resource.Absolute(module),
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})
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}
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return &g, nil
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}
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// NodeApplyableResource represents a resource that is "applyable":
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// it may need to have its record in the state adjusted to match configuration.
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//
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// Unlike in the plan walk, this resource node does not DynamicExpand. Instead,
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// it should be inserted into the same graph as any instances of the nodes
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// with dependency edges ensuring that the resource is evaluated before any
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// of its instances, which will turn ensure that the whole-resource record
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// in the state is suitably prepared to receive any updates to instances.
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type NodeApplyableResource struct {
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*NodeAbstractResource
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Addr addrs.AbsResource
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}
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var (
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_ GraphNodeModuleInstance = (*NodeApplyableResource)(nil)
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_ GraphNodeConfigResource = (*NodeApplyableResource)(nil)
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_ GraphNodeEvalable = (*NodeApplyableResource)(nil)
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_ GraphNodeProviderConsumer = (*NodeApplyableResource)(nil)
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_ GraphNodeAttachResourceConfig = (*NodeApplyableResource)(nil)
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_ GraphNodeReferencer = (*NodeApplyableResource)(nil)
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)
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func (n *NodeApplyableResource) Path() addrs.ModuleInstance {
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return n.Addr.Module
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}
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func (n *NodeApplyableResource) References() []*addrs.Reference {
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if n.Config == nil {
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log.Printf("[WARN] NodeApplyableResource %q: no configuration, so can't determine References", dag.VertexName(n))
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return nil
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}
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var result []*addrs.Reference
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// Since this node type only updates resource-level metadata, we only
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// need to worry about the parts of the configuration that affect
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// our "each mode": the count and for_each meta-arguments.
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refs, _ := lang.ReferencesInExpr(n.Config.Count)
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result = append(result, refs...)
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refs, _ = lang.ReferencesInExpr(n.Config.ForEach)
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result = append(result, refs...)
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return result
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}
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// GraphNodeEvalable
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func (n *NodeApplyableResource) EvalTree() EvalNode {
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if n.Config == nil {
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// Nothing to do, then.
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log.Printf("[TRACE] NodeApplyableResource: no configuration present for %s", n.Name())
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return &EvalNoop{}
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}
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return &EvalWriteResourceState{
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Addr: n.Addr,
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Config: n.Config,
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ProviderAddr: n.ResolvedProvider,
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}
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}
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