opentofu/internal/cloud/backend_apply.go
2023-08-23 18:04:21 +02:00

335 lines
11 KiB
Go

// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: MPL-2.0
package cloud
import (
"bufio"
"context"
"encoding/json"
"fmt"
"io"
"log"
"strings"
tfe "github.com/hashicorp/go-tfe"
"github.com/placeholderplaceholderplaceholder/opentf/internal/backend"
"github.com/placeholderplaceholderplaceholder/opentf/internal/command/jsonformat"
"github.com/placeholderplaceholderplaceholder/opentf/internal/plans"
"github.com/placeholderplaceholderplaceholder/opentf/internal/terraform"
"github.com/placeholderplaceholderplaceholder/opentf/internal/tfdiags"
)
func (b *Cloud) opApply(stopCtx, cancelCtx context.Context, op *backend.Operation, w *tfe.Workspace) (*tfe.Run, error) {
log.Printf("[INFO] cloud: starting Apply operation")
var diags tfdiags.Diagnostics
// We should remove the `CanUpdate` part of this test, but for now
// (to remain compatible with tfe.v2.1) we'll leave it in here.
if !w.Permissions.CanUpdate && !w.Permissions.CanQueueApply {
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"Insufficient rights to apply changes",
"The provided credentials have insufficient rights to apply changes. In order "+
"to apply changes at least write permissions on the workspace are required.",
))
return nil, diags.Err()
}
if w.VCSRepo != nil {
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"Apply not allowed for workspaces with a VCS connection",
"A workspace that is connected to a VCS requires the VCS-driven workflow "+
"to ensure that the VCS remains the single source of truth.",
))
return nil, diags.Err()
}
if b.ContextOpts != nil && b.ContextOpts.Parallelism != defaultParallelism {
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"Custom parallelism values are currently not supported",
`Terraform Cloud does not support setting a custom parallelism `+
`value at this time.`,
))
}
if op.PlanFile.IsLocal() {
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"Applying a saved local plan is not supported",
`Terraform Cloud can apply a saved cloud plan, or create a new plan when `+
`configuration is present. It cannot apply a saved local plan.`,
))
}
if !op.HasConfig() && op.PlanMode != plans.DestroyMode {
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"No configuration files found",
`Apply requires configuration to be present. Applying without a configuration `+
`would mark everything for destruction, which is normally not what is desired. `+
`If you would like to destroy everything, please run 'opentf destroy' which `+
`does not require any configuration files.`,
))
}
// Return if there are any errors.
if diags.HasErrors() {
return nil, diags.Err()
}
var r *tfe.Run
var err error
if cp, ok := op.PlanFile.Cloud(); ok {
log.Printf("[TRACE] Loading saved cloud plan for apply")
// Check hostname first, for a more actionable error than a generic 404 later
if cp.Hostname != b.hostname {
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"Saved plan is for a different hostname",
fmt.Sprintf("The given saved plan refers to a run on %s, but the currently configured cloud backend instance is %s.", cp.Hostname, b.hostname),
))
return r, diags.Err()
}
// Fetch the run referenced in the saved plan bookmark.
r, err = b.client.Runs.ReadWithOptions(stopCtx, cp.RunID, &tfe.RunReadOptions{
Include: []tfe.RunIncludeOpt{tfe.RunWorkspace},
})
if err != nil {
return r, err
}
if r.Workspace.ID != w.ID {
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"Saved plan is for a different workspace",
fmt.Sprintf("The given saved plan does not refer to a run in the current workspace (%s/%s), so it cannot currently be applied. For more details, view this run in a browser at:\n%s", w.Organization.Name, w.Name, runURL(b.hostname, r.Workspace.Organization.Name, r.Workspace.Name, r.ID)),
))
return r, diags.Err()
}
if !r.Actions.IsConfirmable {
url := runURL(b.hostname, b.organization, op.Workspace, r.ID)
return r, unusableSavedPlanError(r.Status, url)
}
// Since we're not calling plan(), we need to print a run header ourselves:
if b.CLI != nil {
b.CLI.Output(b.Colorize().Color(strings.TrimSpace(applySavedHeader) + "\n"))
b.CLI.Output(b.Colorize().Color(strings.TrimSpace(fmt.Sprintf(
runHeader, b.hostname, b.organization, r.Workspace.Name, r.ID)) + "\n"))
}
} else {
log.Printf("[TRACE] Running new cloud plan for apply")
// Run the plan phase.
r, err = b.plan(stopCtx, cancelCtx, op, w)
if err != nil {
return r, err
}
// This check is also performed in the plan method to determine if
// the policies should be checked, but we need to check the values
// here again to determine if we are done and should return.
if !r.HasChanges || r.Status == tfe.RunCanceled || r.Status == tfe.RunErrored {
return r, nil
}
// Retrieve the run to get its current status.
r, err = b.client.Runs.Read(stopCtx, r.ID)
if err != nil {
return r, generalError("Failed to retrieve run", err)
}
// Return if the run cannot be confirmed.
if !op.AutoApprove && !r.Actions.IsConfirmable {
return r, nil
}
mustConfirm := (op.UIIn != nil && op.UIOut != nil) && !op.AutoApprove
if mustConfirm && b.input {
opts := &terraform.InputOpts{Id: "approve"}
if op.PlanMode == plans.DestroyMode {
opts.Query = "\nDo you really want to destroy all resources in workspace \"" + op.Workspace + "\"?"
opts.Description = "OpenTF will destroy all your managed infrastructure, as shown above.\n" +
"There is no undo. Only 'yes' will be accepted to confirm."
} else {
opts.Query = "\nDo you want to perform these actions in workspace \"" + op.Workspace + "\"?"
opts.Description = "OpenTF will perform the actions described above.\n" +
"Only 'yes' will be accepted to approve."
}
err = b.confirm(stopCtx, op, opts, r, "yes")
if err != nil && err != errRunApproved {
return r, err
}
} else if mustConfirm && !b.input {
return r, errApplyNeedsUIConfirmation
} else {
// If we don't need to ask for confirmation, insert a blank
// line to separate the ouputs.
if b.CLI != nil {
b.CLI.Output("")
}
}
}
// Do the apply!
if !op.AutoApprove && err != errRunApproved {
if err = b.client.Runs.Apply(stopCtx, r.ID, tfe.RunApplyOptions{}); err != nil {
return r, generalError("Failed to approve the apply command", err)
}
}
// Retrieve the run to get task stages.
// Task Stages are calculated upfront so we only need to call this once for the run.
taskStages, err := b.runTaskStages(stopCtx, b.client, r.ID)
if err != nil {
return r, err
}
if stage, ok := taskStages[tfe.PreApply]; ok {
if err := b.waitTaskStage(stopCtx, cancelCtx, op, r, stage.ID, "Pre-apply Tasks"); err != nil {
return r, err
}
}
r, err = b.waitForRun(stopCtx, cancelCtx, op, "apply", r, w)
if err != nil {
return r, err
}
err = b.renderApplyLogs(stopCtx, r)
if err != nil {
return r, err
}
return r, nil
}
func (b *Cloud) renderApplyLogs(ctx context.Context, run *tfe.Run) error {
logs, err := b.client.Applies.Logs(ctx, run.Apply.ID)
if err != nil {
return err
}
if b.CLI != nil {
reader := bufio.NewReaderSize(logs, 64*1024)
skip := 0
for next := true; next; {
var l, line []byte
var err error
for isPrefix := true; isPrefix; {
l, isPrefix, err = reader.ReadLine()
if err != nil {
if err != io.EOF {
return generalError("Failed to read logs", err)
}
next = false
}
line = append(line, l...)
}
// Apply logs show the same Terraform info logs as shown in the plan logs
// (which contain version and os/arch information), we therefore skip to prevent duplicate output.
if skip < 3 {
skip++
continue
}
if next || len(line) > 0 {
log := &jsonformat.JSONLog{}
if err := json.Unmarshal(line, log); err != nil {
// If we can not parse the line as JSON, we will simply
// print the line. This maintains backwards compatibility for
// users who do not wish to enable structured output in their
// workspace.
b.CLI.Output(string(line))
continue
}
if b.renderer != nil {
// Otherwise, we will print the log
err := b.renderer.RenderLog(log)
if err != nil {
return err
}
}
}
}
}
return nil
}
func runURL(hostname, orgName, wsName, runID string) string {
return fmt.Sprintf("https://%s/app/%s/%s/runs/%s", hostname, orgName, wsName, runID)
}
func unusableSavedPlanError(status tfe.RunStatus, url string) error {
var diags tfdiags.Diagnostics
var summary, reason string
switch status {
case tfe.RunApplied:
summary = "Saved plan is already applied"
reason = "The given plan file was already successfully applied, and cannot be applied again."
case tfe.RunApplying, tfe.RunApplyQueued, tfe.RunConfirmed:
summary = "Saved plan is already confirmed"
reason = "The given plan file is already being applied, and cannot be applied again."
case tfe.RunCanceled:
summary = "Saved plan is canceled"
reason = "The given plan file can no longer be applied because the run was canceled via the Terraform Cloud UI or API."
case tfe.RunDiscarded:
summary = "Saved plan is discarded"
reason = "The given plan file can no longer be applied; either another run was applied first, or a user discarded it via the Terraform Cloud UI or API."
case tfe.RunErrored:
summary = "Saved plan is errored"
reason = "The given plan file refers to a plan that had errors and did not complete successfully. It cannot be applied."
case tfe.RunPlannedAndFinished:
// Note: planned and finished can also indicate a plan-only run, but
// terraform plan can't create a saved plan for a plan-only run, so we
// know it's no-changes in this case.
summary = "Saved plan has no changes"
reason = "The given plan file contains no changes, so it cannot be applied."
case tfe.RunPolicyOverride:
summary = "Saved plan requires policy override"
reason = "The given plan file has soft policy failures, and cannot be applied until a user with appropriate permissions overrides the policy check."
default:
summary = "Saved plan cannot be applied"
reason = "Terraform Cloud cannot apply the given plan file. This may mean the plan and checks have not yet completed, or may indicate another problem."
}
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
summary,
fmt.Sprintf("%s For more details, view this run in a browser at:\n%s", reason, url),
))
return diags.Err()
}
const applyDefaultHeader = `
[reset][yellow]Running apply in Terraform Cloud. Output will stream here. Pressing Ctrl-C
will cancel the remote apply if it's still pending. If the apply started it
will stop streaming the logs, but will not stop the apply running remotely.[reset]
Preparing the remote apply...
`
const applySavedHeader = `
[reset][yellow]Running apply in Terraform Cloud. Output will stream here. Pressing Ctrl-C
will stop streaming the logs, but will not stop the apply running remotely.[reset]
Preparing the remote apply...
`