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80b3fcf93e
In the v0.12 timeframe we made contextComponentFactory an interface with the expectation that we'd write mocks of it for tests, but in practice we ended up just always using the same "basicComponentFactory" implementation throughout. In the interests of simplification then, here we replace that interface and its sole implementation with a new concrete struct type contextPlugins. Along with the general benefit that this removes an unneeded indirection, this also means that we can add additional methods to the struct type without the usual restriction that interface types prefer to be small. In particular, in a future commit I'm planning to add methods for loading provider and provisioner schemas, working with the currently-unused new fields this commit has included in contextPlugins, as compared to its predecessor basicComponentFactory.
102 lines
3.1 KiB
Go
102 lines
3.1 KiB
Go
package terraform
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import (
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"github.com/hashicorp/terraform/internal/addrs"
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"github.com/hashicorp/terraform/internal/configs"
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"github.com/hashicorp/terraform/internal/dag"
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"github.com/hashicorp/terraform/internal/tfdiags"
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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 a configuration to build the graph from. See ImportOpts.Config.
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Config *configs.Config
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// Plugins is a library of plug-in components (providers and
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// provisioners) available for use.
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Plugins *contextPlugins
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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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// Build builds the graph according to the steps returned by Steps.
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func (b *ImportGraphBuilder) 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: "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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config := b.Config
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if config == nil {
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config = configs.NewEmptyConfig()
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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{Config: config},
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// Add dynamic values
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&RootVariableTransformer{Config: b.Config},
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&ModuleVariableTransformer{Config: b.Config},
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&LocalTransformer{Config: b.Config},
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&OutputTransformer{Config: b.Config},
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// Attach the configuration to any resources
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&AttachResourceConfigTransformer{Config: b.Config},
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// Add the import steps
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&ImportStateTransformer{Targets: b.ImportTargets, Config: b.Config},
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transformProviders(concreteProvider, 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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// Create expansion nodes for all of the module calls. This must
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// come after all other transformers that create nodes representing
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// objects that can belong to modules.
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&ModuleExpansionTransformer{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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// Make sure data sources are aware of any depends_on from the
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// configuration
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&attachDataResourceDependsOnTransformer{},
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// Close opened plugin connections
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&CloseProviderTransformer{},
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// Close root module
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&CloseRootModuleTransformer{},
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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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