opentofu/terraform/graph_builder_import.go
Kristin Laemmert 80862f3436
command/import: attach references before validating provider (#22862)
There was an order-of-operations bug where the import graph builder was
validating that the provider did not have any resource references before
references were actually being attached. This PR fixes the order of
operations and adds a test (in the command package).

Fixes #22804
2020-02-12 14:00:08 -05:00

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},
// 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},
// 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{},
// Single root
&RootTransformer{},
// Optimize
&TransitiveReductionTransformer{},
}
return steps
}