func resourceComputeInstanceMigrateState(
v int, is *terraform.InstanceState, meta interface{}) (*terraform.InstanceState, error) {
if is.Empty() {
log.Println("[DEBUG] Empty InstanceState; nothing to migrate.")
return is, nil
}
switch v {
case 0:
log.Println("[INFO] Found Compute Instance State v0; migrating to v1")
is, err := migrateStateV0toV1(is)
if err != nil {
return is, err
}
fallthrough
case 1:
log.Println("[INFO] Found Compute Instance State v1; migrating to v2")
is, err := migrateStateV1toV2(is)
if err != nil {
return is, err
}
return is, nil
default:
return is, fmt.Errorf("Unexpected schema version: %d", v)
}
}
func migrateStateV0toV1(is *terraform.InstanceState) (*terraform.InstanceState, error) {
if is.Empty() || is.Attributes == nil {
log.Println("[DEBUG] Empty InstanceState; nothing to migrate.")
return is, nil
}
log.Printf("[DEBUG] Attributes before migration: %#v", is.Attributes)
// Delete old count
delete(is.Attributes, "block_device.#")
oldBds, err := readV0BlockDevices(is)
if err != nil {
return is, err
}
// seed count fields for new types
is.Attributes["ebs_block_device.#"] = "0"
is.Attributes["ephemeral_block_device.#"] = "0"
// depending on if state was v0.3.7 or an earlier version, it might have
// root_block_device defined already
if _, ok := is.Attributes["root_block_device.#"]; !ok {
is.Attributes["root_block_device.#"] = "0"
}
for _, oldBd := range oldBds {
if err := writeV1BlockDevice(is, oldBd); err != nil {
return is, err
}
}
log.Printf("[DEBUG] Attributes after migration: %#v", is.Attributes)
return is, nil
}
func migrateKeyPairStateV0toV1(is *terraform.InstanceState) (*terraform.InstanceState, error) {
if is.Empty() {
log.Println("[DEBUG] Empty InstanceState; nothing to migrate.")
return is, nil
}
log.Printf("[DEBUG] Attributes before migration: %#v", is.Attributes)
// replace public_key with a stripped version, removing `\n` from the end
// see https://github.com/hashicorp/terraform/issues/3455
is.Attributes["public_key"] = strings.TrimSpace(is.Attributes["public_key"])
log.Printf("[DEBUG] Attributes after migration: %#v", is.Attributes)
return is, nil
}
func migrateSGRuleStateV0toV1(is *terraform.InstanceState) (*terraform.InstanceState, error) {
if is.Empty() {
log.Println("[DEBUG] Empty InstanceState; nothing to migrate.")
return is, nil
}
perm, err := migrateExpandIPPerm(is.Attributes)
if err != nil {
return nil, fmt.Errorf("[WARN] Error making new IP Permission in Security Group migration")
}
log.Printf("[DEBUG] Attributes before migration: %#v", is.Attributes)
newID := ipPermissionIDHash(is.Attributes["security_group_id"], is.Attributes["type"], perm)
is.Attributes["id"] = newID
is.ID = newID
log.Printf("[DEBUG] Attributes after migration: %#v, new id: %s", is.Attributes, newID)
return is, nil
}
