77 lines
2.1 KiB
Go
77 lines
2.1 KiB
Go
package terraform
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import (
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"github.com/hashicorp/terraform/config/module"
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"github.com/hashicorp/terraform/dag"
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)
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// ImportGraphBuilder implements GraphBuilder and is responsible for building
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// a graph for importing resources into Terraform. This is a much, much
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// simpler graph than a normal configuration graph.
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type ImportGraphBuilder struct {
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// ImportTargets are the list of resources to import.
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ImportTargets []*ImportTarget
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// Module is the module to add to the graph. See ImportOpts.Module.
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Module *module.Tree
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// Providers is the list of providers supported.
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Providers []string
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}
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// Build builds the graph according to the steps returned by Steps.
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func (b *ImportGraphBuilder) Build(path []string) (*Graph, error) {
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return (&BasicGraphBuilder{
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Steps: b.Steps(),
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Validate: true,
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Name: "ImportGraphBuilder",
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}).Build(path)
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}
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// Steps returns the ordered list of GraphTransformers that must be executed
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// to build a complete graph.
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func (b *ImportGraphBuilder) Steps() []GraphTransformer {
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// Get the module. If we don't have one, we just use an empty tree
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// so that the transform still works but does nothing.
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mod := b.Module
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if mod == nil {
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mod = module.NewEmptyTree()
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}
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// Custom factory for creating providers.
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concreteProvider := func(a *NodeAbstractProvider) dag.Vertex {
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return &NodeApplyableProvider{
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NodeAbstractProvider: a,
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}
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}
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steps := []GraphTransformer{
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// Create all our resources from the configuration and state
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&ConfigTransformer{Module: mod},
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// Add the import steps
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&ImportStateTransformer{Targets: b.ImportTargets},
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// Provider-related transformations
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&MissingProviderTransformer{Providers: b.Providers, Concrete: concreteProvider},
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&ProviderTransformer{},
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&DisableProviderTransformer{},
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&ParentProviderTransformer{},
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&AttachProviderConfigTransformer{Module: mod},
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// This validates that the providers only depend on variables
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&ImportProviderValidateTransformer{},
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// Close opened plugin connections
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&CloseProviderTransformer{},
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// Single root
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&RootTransformer{},
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// Optimize
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&TransitiveReductionTransformer{},
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}
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return steps
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}
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