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package tfjson
// Action is a valid action type for a resource change.
//
// Note that a singular Action is not telling of a full resource
// change operation. Certain resource actions, such as replacement,
// are a composite of more than one type. See the Actions type and
// its helpers for more information.
type Action string
const (
// ActionNoop denotes a no-op operation.
ActionNoop Action = "no-op"
// ActionCreate denotes a create operation.
ActionCreate Action = "create"
// ActionRead denotes a read operation.
ActionRead Action = "read"
// ActionUpdate denotes an update operation.
ActionUpdate Action = "update"
// ActionDelete denotes a delete operation.
ActionDelete Action = "delete"
)
// Actions denotes a valid change type.
type Actions []Action
// NoOp is true if this set of Actions denotes a no-op.
func (a Actions) NoOp() bool {
if len(a) != 1 {
return false
}
return a[0] == ActionNoop
}
// Create is true if this set of Actions denotes creation of a new
// resource.
func (a Actions) Create() bool {
if len(a) != 1 {
return false
}
return a[0] == ActionCreate
}
// Read is true if this set of Actions denotes a read operation only.
func (a Actions) Read() bool {
if len(a) != 1 {
return false
}
return a[0] == ActionRead
}
// Update is true if this set of Actions denotes an update operation.
func (a Actions) Update() bool {
if len(a) != 1 {
return false
}
return a[0] == ActionUpdate
}
// Delete is true if this set of Actions denotes resource removal.
func (a Actions) Delete() bool {
if len(a) != 1 {
return false
}
return a[0] == ActionDelete
}
// DestroyBeforeCreate is true if this set of Actions denotes a
// destroy-before-create operation. This is the standard resource
// replacement method.
func (a Actions) DestroyBeforeCreate() bool {
if len(a) != 2 {
return false
}
return a[0] == ActionDelete && a[1] == ActionCreate
}
// CreateBeforeDestroy is true if this set of Actions denotes a
// create-before-destroy operation, usually the result of replacement
// to a resource that has the create_before_destroy lifecycle option
// set.
func (a Actions) CreateBeforeDestroy() bool {
if len(a) != 2 {
return false
}
return a[0] == ActionCreate && a[1] == ActionDelete
}
// Replace is true if this set of Actions denotes a valid replacement
// operation.
func (a Actions) Replace() bool {
return a.DestroyBeforeCreate() || a.CreateBeforeDestroy()
}
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