opentofu/plans/changes.go
Martin Atkins 7357e7f734 plans: New package for in-memory plan models
The types in this package are intended to replace plan- and diff-related
types from the "terraform" package, although those older types must remain
for now so that they can be used to implement shims for older codepaths.

type "Changes" is approximately equivalent to terraform.Diff, but renamed
since it now describes whole objects before and after rather than an
attribute-level diff as before. The term "diff" is now reserved for the
visual rendition of the changes we'll display to the user, although
rendering of this new Changes model is not yet implemented.
2018-10-16 18:50:29 -07:00

79 lines
2.8 KiB
Go

package plans
import (
"github.com/hashicorp/terraform/addrs"
"github.com/hashicorp/terraform/states"
)
// Changes describes various actions that Terraform will attempt to take if
// the corresponding plan is applied.
//
// A Changes object can be rendered into a visual diff (by the caller, using
// code in another package) for display to the user.
type Changes struct {
Resources []*ResourceInstanceChange
RootOutputs map[string]*OutputChange
}
// ResourceInstanceChange describes a change to a particular resource instance
// object.
type ResourceInstanceChange struct {
// Addr is the absolute address of the resource instance that the change
// will apply to.
Addr addrs.AbsResourceInstance
// DeposedKey is the identifier for a deposed object associated with the
// given instance, or states.NotDeposed if this change applies to the
// current object.
//
// A Replace change for a resource with create_before_destroy set will
// create a new DeposedKey temporarily during replacement. In that case,
// DeposedKey in the plan is always states.NotDeposed, representing that
// the current object is being replaced with the deposed.
DeposedKey states.DeposedKey
// Change is an embedded description of the change.
Change
}
// OutputChange describes a change to an output value.
type OutputChange struct {
// Change is an embedded description of the change.
//
// For output value changes, the type constraint for the DynamicValue
// instances is always cty.DynamicPseudoType.
Change
// Sensitive, if true, indicates that either the old or new value in the
// change is sensitive and so a rendered version of the plan in the UI
// should elide the actual values while still indicating the action of the
// change.
Sensitive bool
}
// Change describes a single change with a given action.
type Change struct {
// Action defines what kind of change is being made.
Action Action
// Interpretation of Before and After depend on Action:
//
// NoOp Before and After are the same, unchanged value
// Create Before is nil, and After is the expected value after create.
// Read Before is any prior value (nil if no prior), and After is the
// value that was or will be read.
// Update Before is the value prior to update, and After is the expected
// value after update.
// Replace As with Update.
// Delete Before is the value prior to delete, and After is always nil.
//
// Unknown values may appear anywhere within the Before and After values,
// either as the values themselves or as nested elements within known
// collections/structures.
//
// A plan contains only raw (not yet decoded) values. The caller must use
// schema information obtained out-of-band to decode dynamic values before
// they can be used.
Before, After DynamicValue
}