116 lines
3.4 KiB
Go
116 lines
3.4 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/states"
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"github.com/hashicorp/terraform/internal/tfdiags"
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)
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// DestroyPlanGraphBuilder implements GraphBuilder and is responsible for
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// planning a pure-destroy.
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//
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// Planning a pure destroy operation is simple because we can ignore most
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// ordering configuration and simply reverse the state. This graph mainly
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// exists for targeting, because we need to walk the destroy dependencies to
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// ensure we plan the required resources. Without the requirement for
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// targeting, the plan could theoretically be created directly from the state.
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type DestroyPlanGraphBuilder struct {
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// Config is the configuration tree to build the plan from.
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Config *configs.Config
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// State is the current state
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State *states.State
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// RootVariableValues are the raw input values for root input variables
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// given by the caller, which we'll resolve into final values as part
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// of the plan walk.
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RootVariableValues InputValues
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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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// Targets are resources to target
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Targets []addrs.Targetable
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// If set, skipRefresh will cause us stop skip refreshing any existing
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// resource instances as part of our planning. This will cause us to fail
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// to detect if an object has already been deleted outside of Terraform.
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skipRefresh bool
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}
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// See GraphBuilder
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func (b *DestroyPlanGraphBuilder) Build(path addrs.ModuleInstance) (*Graph, tfdiags.Diagnostics) {
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return (&BasicGraphBuilder{
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Steps: b.Steps(),
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Name: "DestroyPlanGraphBuilder",
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}).Build(path)
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}
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// See GraphBuilder
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func (b *DestroyPlanGraphBuilder) Steps() []GraphTransformer {
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concreteResourceInstance := func(a *NodeAbstractResourceInstance) dag.Vertex {
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return &NodePlanDestroyableResourceInstance{
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NodeAbstractResourceInstance: a,
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skipRefresh: b.skipRefresh,
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}
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}
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concreteResourceInstanceDeposed := func(a *NodeAbstractResourceInstance, key states.DeposedKey) dag.Vertex {
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return &NodePlanDeposedResourceInstanceObject{
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NodeAbstractResourceInstance: a,
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DeposedKey: key,
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skipRefresh: b.skipRefresh,
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}
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}
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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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// Creates nodes for the resource instances tracked in the state.
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&StateTransformer{
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ConcreteCurrent: concreteResourceInstance,
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ConcreteDeposed: concreteResourceInstanceDeposed,
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State: b.State,
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},
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// Create the delete changes for root module outputs.
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&OutputTransformer{
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Config: b.Config,
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Destroy: true,
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},
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// Attach the state
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&AttachStateTransformer{State: b.State},
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// Attach the configuration to any resources
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&AttachResourceConfigTransformer{Config: b.Config},
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transformProviders(concreteProvider, b.Config),
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// Destruction ordering. We require this only so that
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// targeting below will prune the correct things.
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&DestroyEdgeTransformer{
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Config: b.Config,
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State: b.State,
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},
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&TargetsTransformer{Targets: b.Targets},
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// Close opened plugin connections
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&CloseProviderTransformer{},
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// Close the root module
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&CloseRootModuleTransformer{},
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&TransitiveReductionTransformer{},
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}
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return steps
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}
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