mirror of
https://github.com/opentofu/opentofu.git
synced 2025-01-18 12:42:58 -06:00
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.
106 lines
3.4 KiB
Go
106 lines
3.4 KiB
Go
package terraform
|
|
|
|
import (
|
|
"github.com/hashicorp/terraform/internal/addrs"
|
|
"github.com/hashicorp/terraform/internal/configs"
|
|
"github.com/hashicorp/terraform/internal/dag"
|
|
"github.com/hashicorp/terraform/internal/states"
|
|
"github.com/hashicorp/terraform/internal/tfdiags"
|
|
)
|
|
|
|
// EvalGraphBuilder implements GraphBuilder and constructs a graph suitable
|
|
// for evaluating in-memory values (input variables, local values, output
|
|
// values) in the state without any other side-effects.
|
|
//
|
|
// This graph is used only in weird cases, such as the "terraform console"
|
|
// CLI command, where we need to evaluate expressions against the state
|
|
// without taking any other actions.
|
|
//
|
|
// The generated graph will include nodes for providers, resources, etc
|
|
// just to allow indirect dependencies to be resolved, but these nodes will
|
|
// not take any actions themselves since we assume that their parts of the
|
|
// state, if any, are already complete.
|
|
//
|
|
// Although the providers are never configured, they must still be available
|
|
// in order to obtain schema information used for type checking, etc.
|
|
type EvalGraphBuilder struct {
|
|
// Config is the configuration tree.
|
|
Config *configs.Config
|
|
|
|
// State is the current state
|
|
State *states.State
|
|
|
|
// Plugins is a library of plug-in components (providers and
|
|
// provisioners) available for use.
|
|
Plugins *contextPlugins
|
|
|
|
// Schemas is the repository of schemas we will draw from to analyse
|
|
// the configuration.
|
|
Schemas *Schemas
|
|
}
|
|
|
|
// See GraphBuilder
|
|
func (b *EvalGraphBuilder) Build(path addrs.ModuleInstance) (*Graph, tfdiags.Diagnostics) {
|
|
return (&BasicGraphBuilder{
|
|
Steps: b.Steps(),
|
|
Validate: true,
|
|
Name: "EvalGraphBuilder",
|
|
}).Build(path)
|
|
}
|
|
|
|
// See GraphBuilder
|
|
func (b *EvalGraphBuilder) Steps() []GraphTransformer {
|
|
concreteProvider := func(a *NodeAbstractProvider) dag.Vertex {
|
|
return &NodeEvalableProvider{
|
|
NodeAbstractProvider: a,
|
|
}
|
|
}
|
|
|
|
steps := []GraphTransformer{
|
|
// Creates all the data resources that aren't in the state. This will also
|
|
// add any orphans from scaling in as destroy nodes.
|
|
&ConfigTransformer{
|
|
Config: b.Config,
|
|
},
|
|
|
|
// Add dynamic values
|
|
&RootVariableTransformer{Config: b.Config},
|
|
&ModuleVariableTransformer{Config: b.Config},
|
|
&LocalTransformer{Config: b.Config},
|
|
&OutputTransformer{Config: b.Config},
|
|
|
|
// Attach the configuration to any resources
|
|
&AttachResourceConfigTransformer{Config: b.Config},
|
|
|
|
// Attach the state
|
|
&AttachStateTransformer{State: b.State},
|
|
|
|
transformProviders(concreteProvider, b.Config),
|
|
|
|
// Must attach schemas before ReferenceTransformer so that we can
|
|
// analyze the configuration to find references.
|
|
&AttachSchemaTransformer{Schemas: b.Schemas, Config: b.Config},
|
|
|
|
// Create expansion nodes for all of the module calls. This must
|
|
// come after all other transformers that create nodes representing
|
|
// objects that can belong to modules.
|
|
&ModuleExpansionTransformer{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{},
|
|
|
|
// Although we don't configure providers, we do still start them up
|
|
// to get their schemas, and so we must shut them down again here.
|
|
&CloseProviderTransformer{},
|
|
|
|
// Close root module
|
|
&CloseRootModuleTransformer{},
|
|
|
|
// Remove redundant edges to simplify the graph.
|
|
&TransitiveReductionTransformer{},
|
|
}
|
|
|
|
return steps
|
|
}
|