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CLI: Return non-zero exit code when deployment fails in nomad run (#…
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…11550)

* Exit non-zero from run command if deployment fails
* Fix typo in deployment monitor introduced in 0edda11
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lukas-w committed Dec 9, 2021
1 parent 147d971 commit bb1fc6e
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Showing 4 changed files with 29 additions and 15 deletions.
3 changes: 3 additions & 0 deletions .changelog/11550.txt
Original file line number Diff line number Diff line change
@@ -0,0 +1,3 @@
```release-note:improvement
cli: Return non-zero exit code from monitor if deployment fails
```
33 changes: 20 additions & 13 deletions command/deployment_status.go
Original file line number Diff line number Diff line change
Expand Up @@ -181,11 +181,11 @@ func (c *DeploymentStatusCommand) Run(args []string) int {
return 0
}

func (c *DeploymentStatusCommand) monitor(client *api.Client, deployID string, index uint64, verbose bool) {
func (c *DeploymentStatusCommand) monitor(client *api.Client, deployID string, index uint64, verbose bool) (status string, err error) {
if isStdoutTerminal() {
c.ttyMonitor(client, deployID, index, verbose)
return c.ttyMonitor(client, deployID, index, verbose)
} else {
c.defaultMonitor(client, deployID, index, verbose)
return c.defaultMonitor(client, deployID, index, verbose)
}
}

Expand All @@ -208,7 +208,7 @@ func isStdoutTerminal() bool {
// but only used for tty and non-Windows machines since glint doesn't work with
// cmd/PowerShell and non-interactive interfaces
// Margins are used to match the text alignment from job run
func (c *DeploymentStatusCommand) ttyMonitor(client *api.Client, deployID string, index uint64, verbose bool) {
func (c *DeploymentStatusCommand) ttyMonitor(client *api.Client, deployID string, index uint64, verbose bool) (status string, err error) {
var length int
if verbose {
length = fullId
Expand Down Expand Up @@ -242,7 +242,9 @@ func (c *DeploymentStatusCommand) ttyMonitor(client *api.Client, deployID string

UPDATE:
for {
deploy, meta, err := client.Deployments().Info(deployID, &q)
var deploy *api.Deployment
var meta *api.QueryMeta
deploy, meta, err = client.Deployments().Info(deployID, &q)
if err != nil {
d.Append(glint.Layout(glint.Style(
glint.Text(fmt.Sprintf("%s: Error fetching deployment", formatTime(time.Now()))),
Expand All @@ -252,7 +254,7 @@ UPDATE:
return
}

status := deploy.Status
status = deploy.Status
statusComponent = glint.Layout(
glint.Text(""),
glint.Text(formatTime(time.Now())),
Expand Down Expand Up @@ -309,7 +311,8 @@ UPDATE:

// Wait for rollback to launch
time.Sleep(1 * time.Second)
rollback, _, err := client.Jobs().LatestDeployment(deploy.JobID, nil)
var rollback *api.Deployment
rollback, _, err = client.Jobs().LatestDeployment(deploy.JobID, nil)

if err != nil {
d.Append(glint.Layout(glint.Style(
Expand Down Expand Up @@ -342,7 +345,7 @@ UPDATE:
glint.Text(fmt.Sprintf("✓ Deployment %q %s", limit(deployID, length), status)),
).Row().MarginLeft(2)
break UPDATE
case structs.DeploymentStatusCancelled, structs.DeploymentStatusDescriptionBlocked:
case structs.DeploymentStatusCancelled, structs.DeploymentStatusBlocked:
endSpinner = glint.Layout(
glint.Text(fmt.Sprintf("! Deployment %q %s", limit(deployID, length), status)),
).Row().MarginLeft(2)
Expand All @@ -355,10 +358,11 @@ UPDATE:
// Render one final time with completion message
d.Set(endSpinner, statusComponent, glint.Text(""))
d.RenderFrame()
return
}

// Used for Windows and non-tty
func (c *DeploymentStatusCommand) defaultMonitor(client *api.Client, deployID string, index uint64, verbose bool) {
func (c *DeploymentStatusCommand) defaultMonitor(client *api.Client, deployID string, index uint64, verbose bool) (status string, err error) {
writer := uilive.New()
writer.Start()
defer writer.Stop()
Expand All @@ -377,13 +381,15 @@ func (c *DeploymentStatusCommand) defaultMonitor(client *api.Client, deployID st
}

for {
deploy, meta, err := client.Deployments().Info(deployID, &q)
var deploy *api.Deployment
var meta *api.QueryMeta
deploy, meta, err = client.Deployments().Info(deployID, &q)
if err != nil {
c.Ui.Error(c.Colorize().Color(fmt.Sprintf("%s: Error fetching deployment", formatTime(time.Now()))))
return
}

status := deploy.Status
status = deploy.Status
info := formatTime(time.Now())
info += fmt.Sprintf("\n%s", formatDeployment(client, deploy, length))

Expand Down Expand Up @@ -413,7 +419,8 @@ func (c *DeploymentStatusCommand) defaultMonitor(client *api.Client, deployID st
if hasAutoRevert(deploy) {
// Wait for rollback to launch
time.Sleep(1 * time.Second)
rollback, _, err := client.Jobs().LatestDeployment(deploy.JobID, nil)
var rollback *api.Deployment
rollback, _, err = client.Jobs().LatestDeployment(deploy.JobID, nil)

// Separate rollback monitoring from failed deployment
// Needs to be after time.Sleep or it messes up the formatting
Expand All @@ -436,7 +443,7 @@ func (c *DeploymentStatusCommand) defaultMonitor(client *api.Client, deployID st
}
return

case structs.DeploymentStatusSuccessful, structs.DeploymentStatusCancelled, structs.DeploymentStatusDescriptionBlocked:
case structs.DeploymentStatusSuccessful, structs.DeploymentStatusCancelled, structs.DeploymentStatusBlocked:
return
default:
q.WaitIndex = meta.LastIndex
Expand Down
5 changes: 4 additions & 1 deletion command/monitor.go
Original file line number Diff line number Diff line change
Expand Up @@ -300,7 +300,10 @@ func (m *monitor) monitor(evalID string) int {
meta := new(Meta)
meta.Ui = m.ui
cmd := &DeploymentStatusCommand{Meta: *meta}
cmd.monitor(m.client, dID, 0, verbose)
status, err := cmd.monitor(m.client, dID, 0, verbose)
if err != nil || status != structs.DeploymentStatusSuccessful {
return 1
}
}

// Treat scheduling failures specially using a dedicated exit code.
Expand Down
3 changes: 2 additions & 1 deletion website/content/docs/commands/job/run.mdx
Original file line number Diff line number Diff line change
Expand Up @@ -34,7 +34,8 @@ exit after scheduling and deployment have finished or failed.
On successful job submission and scheduling, exit code 0 will be returned. If
there are job placement issues encountered (unsatisfiable constraints, resource
exhaustion, etc), then the exit code will be 2. Any other errors, including
client connection issues or internal errors, are indicated by exit code 1.
deployment failures, client connection issues, or internal errors, are indicated
by exit code 1.

If the job has specified the region, the `-region` flag and `$NOMAD_REGION`
environment variable are overridden and the job's region is used.
Expand Down

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