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https://github.com/opentofu/opentofu.git
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c937c06a03
Due to how deeply the configuration types go into Terraform Core, there isn't a great way to switch out to HCL2 gradually. As a consequence, this huge commit gets us from the old state to a _compilable_ new state, but does not yet attempt to fix any tests and has a number of known missing parts and bugs. We will continue to iterate on this in forthcoming commits, heading back towards passing tests and making Terraform fully-functional again. The three main goals here are: - Use the configuration models from the "configs" package instead of the older models in the "config" package, which is now deprecated and preserved only to help us write our migration tool. - Do expression inspection and evaluation using the functionality of the new "lang" package, instead of the Interpolator type and related functionality in the main "terraform" package. - Represent addresses of various objects using types in the addrs package, rather than hand-constructed strings. This is not critical to support the above, but was a big help during the implementation of these other points since it made it much more explicit what kind of address is expected in each context. Since our new packages are built to accommodate some future planned features that are not yet implemented (e.g. the "for_each" argument on resources, "count"/"for_each" on modules), and since there's still a fair amount of functionality still using old-style APIs, there is a moderate amount of shimming here to connect new assumptions with old, hopefully in a way that makes it easier to find and eliminate these shims later. I apologize in advance to the person who inevitably just found this huge commit while spelunking through the commit history.
103 lines
2.8 KiB
Go
103 lines
2.8 KiB
Go
package terraform
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import (
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"github.com/hashicorp/terraform/dag"
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"github.com/hashicorp/terraform/tfdiags"
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)
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// NodePlannableResource represents a resource that is "plannable":
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// it is ready to be planned in order to create a diff.
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type NodePlannableResource struct {
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*NodeAbstractResource
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}
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var (
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_ GraphNodeSubPath = (*NodePlannableResource)(nil)
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_ GraphNodeDynamicExpandable = (*NodePlannableResource)(nil)
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_ GraphNodeReferenceable = (*NodePlannableResource)(nil)
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_ GraphNodeReferencer = (*NodePlannableResource)(nil)
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_ GraphNodeResource = (*NodePlannableResource)(nil)
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_ GraphNodeAttachResourceConfig = (*NodePlannableResource)(nil)
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)
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// GraphNodeDynamicExpandable
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func (n *NodePlannableResource) DynamicExpand(ctx EvalContext) (*Graph, error) {
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var diags tfdiags.Diagnostics
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count, countDiags := evaluateResourceCountExpression(n.Config.Count, ctx)
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diags = diags.Append(countDiags)
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if countDiags.HasErrors() {
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return nil, diags.Err()
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}
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// Next we need to potentially rename an instance address in the state
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// if we're transitioning whether "count" is set at all.
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fixResourceCountSetTransition(ctx, n.ResourceAddr().Resource, count != -1)
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// Grab the state which we read
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state, lock := ctx.State()
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lock.RLock()
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defer lock.RUnlock()
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// The concrete resource factory we'll use
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concreteResource := func(a *NodeAbstractResourceInstance) dag.Vertex {
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// Add the config and state since we don't do that via transforms
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a.Config = n.Config
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a.ResolvedProvider = n.ResolvedProvider
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return &NodePlannableResourceInstance{
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NodeAbstractResourceInstance: a,
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}
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}
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// The concrete resource factory we'll use for orphans
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concreteResourceOrphan := func(a *NodeAbstractResourceInstance) dag.Vertex {
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// Add the config and state since we don't do that via transforms
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a.Config = n.Config
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a.ResolvedProvider = n.ResolvedProvider
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return &NodePlannableResourceInstanceOrphan{
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NodeAbstractResourceInstance: a,
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}
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}
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// Start creating the steps
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steps := []GraphTransformer{
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// Expand the count.
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&ResourceCountTransformer{
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Concrete: concreteResource,
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Count: count,
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Addr: n.ResourceAddr(),
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},
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// Add the count orphans
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&OrphanResourceCountTransformer{
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Concrete: concreteResourceOrphan,
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Count: count,
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Addr: n.ResourceAddr(),
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State: state,
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},
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// Attach the state
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&AttachStateTransformer{State: state},
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// Targeting
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&TargetsTransformer{Targets: n.Targets},
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// Connect references so ordering is correct
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&ReferenceTransformer{},
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// Make sure there is a single root
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&RootTransformer{},
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}
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// Build the graph
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b := &BasicGraphBuilder{
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Steps: steps,
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Validate: true,
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Name: "NodePlannableResource",
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}
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graph, diags := b.Build(ctx.Path())
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return graph, diags.ErrWithWarnings()
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}
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