opentofu/terraform/graph_builder_import.go
James Bardin 0dcca1bc37 make the root node a nodeCloseModule for root
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.
2020-04-02 16:00:36 -04:00

101 lines
2.9 KiB
Go

package terraform
import (
"github.com/hashicorp/terraform/addrs"
"github.com/hashicorp/terraform/configs"
"github.com/hashicorp/terraform/dag"
"github.com/hashicorp/terraform/tfdiags"
)
// ImportGraphBuilder implements GraphBuilder and is responsible for building
// a graph for importing resources into Terraform. This is a much, much
// simpler graph than a normal configuration graph.
type ImportGraphBuilder struct {
// ImportTargets are the list of resources to import.
ImportTargets []*ImportTarget
// Module is a configuration to build the graph from. See ImportOpts.Config.
Config *configs.Config
// Components is the factory for our available plugin components.
Components contextComponentFactory
// Schemas is the repository of schemas we will draw from to analyse
// the configuration.
Schemas *Schemas
}
// Build builds the graph according to the steps returned by Steps.
func (b *ImportGraphBuilder) Build(path addrs.ModuleInstance) (*Graph, tfdiags.Diagnostics) {
return (&BasicGraphBuilder{
Steps: b.Steps(),
Validate: true,
Name: "ImportGraphBuilder",
}).Build(path)
}
// Steps returns the ordered list of GraphTransformers that must be executed
// to build a complete graph.
func (b *ImportGraphBuilder) Steps() []GraphTransformer {
// Get the module. If we don't have one, we just use an empty tree
// so that the transform still works but does nothing.
config := b.Config
if config == nil {
config = configs.NewEmptyConfig()
}
// Custom factory for creating providers.
concreteProvider := func(a *NodeAbstractProvider) dag.Vertex {
return &NodeApplyableProvider{
NodeAbstractProvider: a,
}
}
steps := []GraphTransformer{
// Create all our resources from the configuration and state
&ConfigTransformer{Config: config},
// Attach the configuration to any resources
&AttachResourceConfigTransformer{Config: b.Config},
// Add the import steps
&ImportStateTransformer{Targets: b.ImportTargets, Config: b.Config},
// Add root variables
&RootVariableTransformer{Config: b.Config},
TransformProviders(b.Components.ResourceProviders(), concreteProvider, config),
// Add the local values
&LocalTransformer{Config: b.Config},
// Add the outputs
&OutputTransformer{Config: b.Config},
// Add module variables
&ModuleVariableTransformer{Config: b.Config},
// Must attach schemas before ReferenceTransformer so that we can
// analyze the configuration to find references.
&AttachSchemaTransformer{Schemas: b.Schemas, Config: b.Config},
// Connect so that the references are ready for targeting. We'll
// have to connect again later for providers and so on.
&ReferenceTransformer{},
// This validates that the providers only depend on variables
&ImportProviderValidateTransformer{},
// Close opened plugin connections
&CloseProviderTransformer{},
// Close root module
&CloseRootModuleTransformer{},
// Optimize
&TransitiveReductionTransformer{},
}
return steps
}