opentofu/terraform/state_upgrade_v1_to_v2.go
Mitchell Hashimoto 3342aa580c
terraform: InstanceState.Meta is value type interface{}
This changes the type of values in Meta for InstanceState to
`interface{}`. They were `string` before.

This will allow richer structures to be persisted to this without
flatmapping them (down with flatmap!). The documentation clearly states
that only primitives/collections are allowed here.

The only thing using this was helper/schema for schema versioning.
Appropriate type checking was added to make this change safe.

The timeout work @catsby is doing will use this for a richer structure.
2017-02-23 10:44:05 -08:00

181 lines
4.1 KiB
Go

package terraform
import (
"fmt"
"github.com/mitchellh/copystructure"
)
// upgradeStateV1ToV2 is used to upgrade a V1 state representation
// into a V2 state representation
func upgradeStateV1ToV2(old *stateV1) (*State, error) {
if old == nil {
return nil, nil
}
remote, err := old.Remote.upgradeToV2()
if err != nil {
return nil, fmt.Errorf("Error upgrading State V1: %v", err)
}
modules := make([]*ModuleState, len(old.Modules))
for i, module := range old.Modules {
upgraded, err := module.upgradeToV2()
if err != nil {
return nil, fmt.Errorf("Error upgrading State V1: %v", err)
}
modules[i] = upgraded
}
if len(modules) == 0 {
modules = nil
}
newState := &State{
Version: 2,
Serial: old.Serial,
Remote: remote,
Modules: modules,
}
newState.sort()
newState.init()
return newState, nil
}
func (old *remoteStateV1) upgradeToV2() (*RemoteState, error) {
if old == nil {
return nil, nil
}
config, err := copystructure.Copy(old.Config)
if err != nil {
return nil, fmt.Errorf("Error upgrading RemoteState V1: %v", err)
}
return &RemoteState{
Type: old.Type,
Config: config.(map[string]string),
}, nil
}
func (old *moduleStateV1) upgradeToV2() (*ModuleState, error) {
if old == nil {
return nil, nil
}
path, err := copystructure.Copy(old.Path)
if err != nil {
return nil, fmt.Errorf("Error upgrading ModuleState V1: %v", err)
}
// Outputs needs upgrading to use the new structure
outputs := make(map[string]*OutputState)
for key, output := range old.Outputs {
outputs[key] = &OutputState{
Type: "string",
Value: output,
Sensitive: false,
}
}
resources := make(map[string]*ResourceState)
for key, oldResource := range old.Resources {
upgraded, err := oldResource.upgradeToV2()
if err != nil {
return nil, fmt.Errorf("Error upgrading ModuleState V1: %v", err)
}
resources[key] = upgraded
}
dependencies, err := copystructure.Copy(old.Dependencies)
if err != nil {
return nil, fmt.Errorf("Error upgrading ModuleState V1: %v", err)
}
return &ModuleState{
Path: path.([]string),
Outputs: outputs,
Resources: resources,
Dependencies: dependencies.([]string),
}, nil
}
func (old *resourceStateV1) upgradeToV2() (*ResourceState, error) {
if old == nil {
return nil, nil
}
dependencies, err := copystructure.Copy(old.Dependencies)
if err != nil {
return nil, fmt.Errorf("Error upgrading ResourceState V1: %v", err)
}
primary, err := old.Primary.upgradeToV2()
if err != nil {
return nil, fmt.Errorf("Error upgrading ResourceState V1: %v", err)
}
deposed := make([]*InstanceState, len(old.Deposed))
for i, v := range old.Deposed {
upgraded, err := v.upgradeToV2()
if err != nil {
return nil, fmt.Errorf("Error upgrading ResourceState V1: %v", err)
}
deposed[i] = upgraded
}
if len(deposed) == 0 {
deposed = nil
}
return &ResourceState{
Type: old.Type,
Dependencies: dependencies.([]string),
Primary: primary,
Deposed: deposed,
Provider: old.Provider,
}, nil
}
func (old *instanceStateV1) upgradeToV2() (*InstanceState, error) {
if old == nil {
return nil, nil
}
attributes, err := copystructure.Copy(old.Attributes)
if err != nil {
return nil, fmt.Errorf("Error upgrading InstanceState V1: %v", err)
}
ephemeral, err := old.Ephemeral.upgradeToV2()
if err != nil {
return nil, fmt.Errorf("Error upgrading InstanceState V1: %v", err)
}
meta, err := copystructure.Copy(old.Meta)
if err != nil {
return nil, fmt.Errorf("Error upgrading InstanceState V1: %v", err)
}
newMeta := make(map[string]interface{})
for k, v := range meta.(map[string]string) {
newMeta[k] = v
}
return &InstanceState{
ID: old.ID,
Attributes: attributes.(map[string]string),
Ephemeral: *ephemeral,
Meta: newMeta,
}, nil
}
func (old *ephemeralStateV1) upgradeToV2() (*EphemeralState, error) {
connInfo, err := copystructure.Copy(old.ConnInfo)
if err != nil {
return nil, fmt.Errorf("Error upgrading EphemeralState V1: %v", err)
}
return &EphemeralState{
ConnInfo: connInfo.(map[string]string),
}, nil
}