opentofu/command/state_push.go
Martin Atkins a3403f2766 terraform: Ugly huge change to weave in new State and Plan types
Due to how often the state and plan types are referenced throughout
Terraform, there isn't a great way to switch them out gradually. As a
consequence, this huge commit gets us from the old world to a _compilable_
new world, but still has a large number of known test failures due to
key functionality being stubbed out.

The stubs here are for anything that interacts with providers, since we
now need to do the follow-up work to similarly replace the old
terraform.ResourceProvider interface with its replacement in the new
"providers" package. That work, along with work to fix the remaining
failing tests, will follow in subsequent commits.

The aim here was to replace all references to terraform.State and its
downstream types with states.State, terraform.Plan with plans.Plan,
state.State with statemgr.State, and switch to the new implementations of
the state and plan file formats. However, due to the number of times those
types are used, this also ended up affecting numerous other parts of core
such as terraform.Hook, the backend.Backend interface, and most of the CLI
commands.

Just as with 5861dbf3fc49b19587a31816eb06f511ab861bb4 before, I apologize
in advance to the person who inevitably just found this huge commit while
spelunking through the commit history.
2018-10-16 19:11:09 -07:00

170 lines
4.4 KiB
Go

package command
import (
"strings"
"github.com/mitchellh/cli"
)
// StatePushCommand is a Command implementation that shows a single resource.
type StatePushCommand struct {
Meta
StateMeta
}
func (c *StatePushCommand) Run(args []string) int {
args, err := c.Meta.process(args, true)
if err != nil {
return 1
}
var flagForce bool
cmdFlags := c.Meta.flagSet("state push")
cmdFlags.BoolVar(&flagForce, "force", false, "")
if err := cmdFlags.Parse(args); err != nil {
return cli.RunResultHelp
}
args = cmdFlags.Args()
if len(args) != 1 {
c.Ui.Error("Exactly one argument expected: path to state to push")
return 1
}
c.Ui.Error("state push not yet updated for new state types")
return 1
/*
// Determine our reader for the input state. This is the filepath
// or stdin if "-" is given.
var r io.Reader = os.Stdin
if args[0] != "-" {
f, err := os.Open(args[0])
if err != nil {
c.Ui.Error(err.Error())
return 1
}
// Note: we don't need to defer a Close here because we do a close
// automatically below directly after the read.
r = f
}
// Read the state
sourceState, err := terraform.ReadState(r)
if c, ok := r.(io.Closer); ok {
// Close the reader if possible right now since we're done with it.
c.Close()
}
if err != nil {
c.Ui.Error(fmt.Sprintf("Error reading source state %q: %s", args[0], err))
return 1
}
// Load the backend
b, backendDiags := c.Backend(nil)
if backendDiags.HasErrors() {
c.showDiagnostics(backendDiags)
return 1
}
// Get the state
env := c.Workspace()
state, err := b.StateMgr(env)
if err != nil {
c.Ui.Error(fmt.Sprintf("Failed to load destination state: %s", err))
return 1
}
if err := state.RefreshState(); err != nil {
c.Ui.Error(fmt.Sprintf("Failed to load destination state: %s", err))
return 1
}
dstState := state.State()
// If we're not forcing, then perform safety checks
if !flagForce && !dstState.Empty() {
if !dstState.SameLineage(sourceState) {
c.Ui.Error(strings.TrimSpace(errStatePushLineage))
return 1
}
age, err := dstState.CompareAges(sourceState)
if err != nil {
c.Ui.Error(err.Error())
return 1
}
if age == terraform.StateAgeReceiverNewer {
c.Ui.Error(strings.TrimSpace(errStatePushSerialNewer))
return 1
}
}
// Overwrite it
if err := state.WriteState(sourceState); err != nil {
c.Ui.Error(fmt.Sprintf("Failed to write state: %s", err))
return 1
}
if err := state.PersistState(); err != nil {
c.Ui.Error(fmt.Sprintf("Failed to write state: %s", err))
return 1
}
*/
return 0
}
func (c *StatePushCommand) Help() string {
helpText := `
Usage: terraform state push [options] PATH
Update remote state from a local state file at PATH.
This command "pushes" a local state and overwrites remote state
with a local state file. The command will protect you against writing
an older serial or a different state file lineage unless you specify the
"-force" flag.
This command works with local state (it will overwrite the local
state), but is less useful for this use case.
If PATH is "-", then this command will read the state to push from stdin.
Data from stdin is not streamed to the backend: it is loaded completely
(until pipe close), verified, and then pushed.
Options:
-force Write the state even if lineages don't match or the
remote serial is higher.
`
return strings.TrimSpace(helpText)
}
func (c *StatePushCommand) Synopsis() string {
return "Update remote state from a local state file"
}
const errStatePushLineage = `
The lineages do not match! The state will not be pushed.
The "lineage" is a unique identifier given to a state on creation. It helps
protect Terraform from overwriting a seemingly unrelated state file since it
represents potentially losing real state.
Please verify you're pushing the correct state. If you're sure you are, you
can force the behavior with the "-force" flag.
`
const errStatePushSerialNewer = `
The destination state has a higher serial number! The state will not be pushed.
A higher serial could indicate that there is data in the destination state
that was not present when the source state was created. As a protection measure,
Terraform will not automatically overwrite this state.
Please verify you're pushing the correct state. If you're sure you are, you
can force the behavior with the "-force" flag.
`