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0dcca1bc37
Replace the graphNodeRoot for the main graph with a nodeCloseModule for the root module. USe a new transformer as well, so as to not change any behavior of DynamicExpand graphs. Closing out the root module like we do with sub modules means we no longer need the OrphanResourceTransformer, or the NodeDestroyResource. The old resource destroy logic has mostly moved into the instance nodes, and the remaining resource node was just for cleanup, which need to be done again by the module since there isn't always a NodeDestroyResource to be evaluated. The more-correct state caused a few tests to fail, which need to be cleaned up to match the state without empty resource husks.
109 lines
3.3 KiB
Go
109 lines
3.3 KiB
Go
package terraform
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import (
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"github.com/hashicorp/terraform/addrs"
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"github.com/hashicorp/terraform/configs"
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"github.com/hashicorp/terraform/dag"
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"github.com/hashicorp/terraform/states"
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"github.com/hashicorp/terraform/tfdiags"
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)
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// EvalGraphBuilder implements GraphBuilder and constructs a graph suitable
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// for evaluating in-memory values (input variables, local values, output
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// values) in the state without any other side-effects.
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//
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// This graph is used only in weird cases, such as the "terraform console"
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// CLI command, where we need to evaluate expressions against the state
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// without taking any other actions.
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//
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// The generated graph will include nodes for providers, resources, etc
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// just to allow indirect dependencies to be resolved, but these nodes will
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// not take any actions themselves since we assume that their parts of the
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// state, if any, are already complete.
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//
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// Although the providers are never configured, they must still be available
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// in order to obtain schema information used for type checking, etc.
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type EvalGraphBuilder struct {
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// Config is the configuration tree.
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Config *configs.Config
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// State is the current state
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State *states.State
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// Components is a factory for the plug-in components (providers and
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// provisioners) available for use.
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Components contextComponentFactory
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// Schemas is the repository of schemas we will draw from to analyse
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// the configuration.
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Schemas *Schemas
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}
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// See GraphBuilder
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func (b *EvalGraphBuilder) Build(path addrs.ModuleInstance) (*Graph, tfdiags.Diagnostics) {
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return (&BasicGraphBuilder{
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Steps: b.Steps(),
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Validate: true,
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Name: "EvalGraphBuilder",
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}).Build(path)
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}
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// See GraphBuilder
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func (b *EvalGraphBuilder) Steps() []GraphTransformer {
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concreteProvider := func(a *NodeAbstractProvider) dag.Vertex {
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return &NodeEvalableProvider{
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NodeAbstractProvider: a,
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}
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}
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steps := []GraphTransformer{
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// Creates all the data resources that aren't in the state. This will also
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// add any orphans from scaling in as destroy nodes.
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&ConfigTransformer{
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Concrete: nil, // just use the abstract type
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Config: b.Config,
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Unique: true,
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},
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// Attach the state
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&AttachStateTransformer{State: b.State},
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// Attach the configuration to any resources
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&AttachResourceConfigTransformer{Config: b.Config},
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// Add root variables
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&RootVariableTransformer{Config: b.Config},
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// Add the local values
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&LocalTransformer{Config: b.Config},
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// Add the outputs
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&OutputTransformer{Config: b.Config},
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// Add module variables
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&ModuleVariableTransformer{Config: b.Config},
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TransformProviders(b.Components.ResourceProviders(), concreteProvider, b.Config),
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// Must attach schemas before ReferenceTransformer so that we can
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// analyze the configuration to find references.
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&AttachSchemaTransformer{Schemas: b.Schemas, Config: b.Config},
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// Connect so that the references are ready for targeting. We'll
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// have to connect again later for providers and so on.
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&ReferenceTransformer{},
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// Although we don't configure providers, we do still start them up
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// to get their schemas, and so we must shut them down again here.
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&CloseProviderTransformer{},
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// Close root module
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&CloseRootModuleTransformer{},
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// Remove redundant edges to simplify the graph.
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&TransitiveReductionTransformer{},
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}
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return steps
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}
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