command: multi-state (non-default env) to single state
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@ -48,6 +48,10 @@ func (m *Meta) backendMigrateState(opts *backendMigrateOpts) error {
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errMigrateLoadStates), opts.TwoType, err)
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errMigrateLoadStates), opts.TwoType, err)
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}
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}
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// Setup defaults
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opts.oneEnv = backend.DefaultStateName
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opts.twoEnv = backend.DefaultStateName
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// Determine migration behavior based on whether the source/destionation
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// Determine migration behavior based on whether the source/destionation
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// supports multi-state.
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// supports multi-state.
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switch {
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switch {
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@ -105,6 +109,8 @@ func (m *Meta) backendMigrateState(opts *backendMigrateOpts) error {
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// Multi-state to single state.
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// Multi-state to single state.
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func (m *Meta) backendMigrateState_S_s(opts *backendMigrateOpts) error {
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func (m *Meta) backendMigrateState_S_s(opts *backendMigrateOpts) error {
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currentEnv := m.Env()
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// Ask the user if they want to migrate their existing remote state
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// Ask the user if they want to migrate their existing remote state
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migrate, err := m.confirm(&terraform.InputOpts{
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migrate, err := m.confirm(&terraform.InputOpts{
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Id: "backend-migrate-multistate-to-single",
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Id: "backend-migrate-multistate-to-single",
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@ -112,7 +118,9 @@ func (m *Meta) backendMigrateState_S_s(opts *backendMigrateOpts) error {
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"Destination state %q doesn't support environments (named states).\n"+
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"Destination state %q doesn't support environments (named states).\n"+
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"Do you want to copy only your current environment?",
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"Do you want to copy only your current environment?",
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opts.TwoType),
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opts.TwoType),
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Description: strings.TrimSpace(inputBackendMigrateMultiToSingle),
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Description: fmt.Sprintf(
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strings.TrimSpace(inputBackendMigrateMultiToSingle),
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opts.OneType, opts.TwoType, currentEnv),
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})
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})
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if err != nil {
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if err != nil {
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return fmt.Errorf(
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return fmt.Errorf(
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@ -123,12 +131,13 @@ func (m *Meta) backendMigrateState_S_s(opts *backendMigrateOpts) error {
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}
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}
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// Copy the default state
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// Copy the default state
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opts.oneEnv = currentEnv
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return m.backendMigrateState_s_s(opts)
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return m.backendMigrateState_s_s(opts)
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}
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}
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// Single state to single state, assumed default state name.
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// Single state to single state, assumed default state name.
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func (m *Meta) backendMigrateState_s_s(opts *backendMigrateOpts) error {
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func (m *Meta) backendMigrateState_s_s(opts *backendMigrateOpts) error {
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stateOne, err := opts.One.State(backend.DefaultStateName)
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stateOne, err := opts.One.State(opts.oneEnv)
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if err != nil {
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if err != nil {
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return fmt.Errorf(strings.TrimSpace(
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return fmt.Errorf(strings.TrimSpace(
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errMigrateSingleLoadDefault), opts.OneType, err)
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errMigrateSingleLoadDefault), opts.OneType, err)
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@ -138,7 +147,7 @@ func (m *Meta) backendMigrateState_s_s(opts *backendMigrateOpts) error {
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errMigrateSingleLoadDefault), opts.OneType, err)
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errMigrateSingleLoadDefault), opts.OneType, err)
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}
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}
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stateTwo, err := opts.Two.State(backend.DefaultStateName)
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stateTwo, err := opts.Two.State(opts.twoEnv)
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if err != nil {
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if err != nil {
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return fmt.Errorf(strings.TrimSpace(
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return fmt.Errorf(strings.TrimSpace(
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errMigrateSingleLoadDefault), opts.TwoType, err)
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errMigrateSingleLoadDefault), opts.TwoType, err)
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@ -314,6 +323,11 @@ func (m *Meta) backendMigrateNonEmptyConfirm(
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type backendMigrateOpts struct {
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type backendMigrateOpts struct {
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OneType, TwoType string
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OneType, TwoType string
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One, Two backend.Backend
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One, Two backend.Backend
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// Fields below are set internally when migrate is called
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oneEnv string // source env
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twoEnv string // dest env
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}
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}
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const errMigrateLoadStates = `
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const errMigrateLoadStates = `
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@ -361,10 +375,10 @@ and "no" to start with the existing state in %[2]q.
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`
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`
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const inputBackendMigrateMultiToSingle = `
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const inputBackendMigrateMultiToSingle = `
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The existing backend %q supports environments and you currently are
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The existing backend %[1]q supports environments and you currently are
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using more than one. The target backend %q doesn't support environments.
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using more than one. The target backend %[2]q doesn't support environments.
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If you continue, Terraform will offer to copy your current environment
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If you continue, Terraform will offer to copy your current environment
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%q to the default environment in the target. Your existing environments
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%[3]q to the default environment in the target. Your existing environments
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in the source backend won't be modified. If you want to switch environments,
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in the source backend won't be modified. If you want to switch environments,
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back them up, or cancel altogether, answer "no" and Terraform will abort.
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back them up, or cancel altogether, answer "no" and Terraform will abort.
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`
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`
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@ -1126,6 +1126,73 @@ func TestMetaBackend_configuredChangeCopy_multiToSingle(t *testing.T) {
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}
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}
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}
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}
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// Changing a configured backend that supports multi-state to a
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// backend that only supports single states.
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func TestMetaBackend_configuredChangeCopy_multiToSingleCurrentEnv(t *testing.T) {
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// Create a temporary working directory that is empty
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td := tempDir(t)
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copy.CopyDir(testFixturePath("backend-change-multi-to-single"), td)
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defer os.RemoveAll(td)
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defer testChdir(t, td)()
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// Register the single-state backend
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backendinit.Set("local-single", backendlocal.TestNewLocalSingle)
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defer backendinit.Set("local-single", nil)
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// Ask input
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defer testInputMap(t, map[string]string{
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"backend-migrate-to-new": "yes",
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"backend-migrate-multistate-to-single": "yes",
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"backend-migrate-copy-to-empty": "yes",
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})()
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// Setup the meta
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m := testMetaBackend(t, nil)
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// Change env
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if err := m.SetEnv("env2"); err != nil {
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t.Fatalf("bad: %s", err)
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}
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// Get the backend
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b, err := m.Backend(&BackendOpts{Init: true})
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if err != nil {
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t.Fatalf("bad: %s", err)
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}
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// Check the state
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s, err := b.State(backend.DefaultStateName)
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if err != nil {
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t.Fatalf("bad: %s", err)
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}
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if err := s.RefreshState(); err != nil {
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t.Fatalf("bad: %s", err)
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}
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state := s.State()
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if state == nil {
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t.Fatal("state should not be nil")
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}
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if state.Lineage != "backend-change-env2" {
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t.Fatalf("bad: %#v", state)
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}
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// Verify no local state
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if _, err := os.Stat(DefaultStateFilename); err == nil {
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t.Fatal("file should not exist")
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}
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// Verify no local backup
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if _, err := os.Stat(DefaultStateFilename + DefaultBackupExtension); err == nil {
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t.Fatal("file should not exist")
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}
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// Verify existing environments exist
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envPath := filepath.Join(backendlocal.DefaultEnvDir, "env2", backendlocal.DefaultStateFilename)
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if _, err := os.Stat(envPath); err != nil {
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t.Fatal("env should exist")
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}
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}
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// Unsetting a saved backend
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// Unsetting a saved backend
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func TestMetaBackend_configuredUnset(t *testing.T) {
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func TestMetaBackend_configuredUnset(t *testing.T) {
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// Create a temporary working directory that is empty
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// Create a temporary working directory that is empty
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