feat: implement ps-set-scale trigger

docs/development/plugin-triggers.md

@@ -1815,6 +1815,21 @@ set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
 # TODO
 ```
 
+### `ps-set-scale`
+
+- Description: Sets the scale for an app based on a specified formation (process-type=quantity). Any unspecified process types will be left as is.
+- Invoked by:
+- Arguments: `$APP $SKIP_DEPLOY [$PROCESS_TUPLE...]`
+- Example:
+
+```shell
+#!/usr/bin/env bash
+
+set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
+
+# TODO
+```
+
 ### `receive-app`
 
 - Description: Allows you to customize what occurs when an app is received. Normally just triggers an app build.

plugins/app-json/functions.go

@@ -496,7 +496,7 @@ func setScale(appName string, image string) error {
 		return err
 	}
 
-	args := []string{appName}
+	args := []string{appName, "true"}
 	for processType, formation := range appJSON.Formation {
 		args = append(args, fmt.Sprintf("%s=%d", processType, formation.Quantity))
 	}
@@ -509,7 +509,7 @@ func setScale(appName string, image string) error {
 		return err
 	}
 
-	return common.PlugnTrigger("ps-scale-set", args...)
+	return common.PlugnTrigger("ps-set-scale", args...)
 }
 
 func injectDokkuScale(appName string, image string) error {

plugins/ps/src/triggers/triggers.go

@@ -75,6 +75,11 @@ func main() {
 	case "procfile-remove":
 		appName := flag.Arg(0)
 		err = ps.TriggerProcfileRemove(appName)
+	case "ps-set-scale":
+		appName := flag.Arg(0)
+		appName, args := common.ShiftString(flag.Args())
+		skipDeploy, processTuples := common.ShiftString(args)
+		err = ps.TriggerPsSetScale(appName, common.ToBool(skipDeploy), processTuples)
 	case "ps-current-scale":
 		appName := flag.Arg(0)
 		err = ps.TriggerPsCurrentScale(appName)

plugins/ps/triggers.go

@@ -282,3 +282,7 @@ func TriggerPsCurrentScale(appName string) error {
 
 	return nil
 }
+
+func TriggerPsSetScale(appName string, skipDeploy bool, processTuples []string) error {
+	return scaleSet(appName, skipDeploy, processTuples)
+}