Make the cloud scheduler deployer GKE-aware (#2562)

Depending on if a "--gke" parameter (must be the last one) is passed,
the deployer constructs the corresponding URIs for GAE or GKE
accordingly.

TESTED=Used the deployer to deploy tasks to alpha and verified that they
run on GKE.

release/builder/deployCloudSchedulerAndQueue.go

@@ -30,8 +30,12 @@ import (
 	"gopkg.in/yaml.v3"
 )
 
+var gke bool = false
+
 var projectName string
 
+var baseDomain string
+
 var clientId string
 
 const GcpLocation = "us-central1"
@@ -80,6 +84,9 @@ type TasksSyncManager struct {
 }
 
 type YamlEntries struct {
+	GcpProject struct {
+		BaseDomain string `yaml:"baseDomain"`
+	} `yaml:"gcpProject"`
 	Auth struct {
 		OauthClientId string `yaml:"oauthClientId"`
 	} `yaml:"auth"`
@@ -169,7 +176,7 @@ func (manager TasksSyncManager) getXmlEntries() []Task {
 }
 
 func (manager TasksSyncManager) getArgs(task Task, operationType string) []string {
-	// Cloud Schedule doesn't allow description of more than 499 chars and \n
+	// Cloud Scheduler doesn't allow description of more than 499 chars.
 	var description string
 	if len(task.Description) > 499 {
 		log.Default().Println("Task description exceeds the allowed length of " +
@@ -186,13 +193,20 @@ func (manager TasksSyncManager) getArgs(task Task, operationType string) []strin
 		service = task.Service
 	}
 
+	var uri string
+	if gke {
+		uri = fmt.Sprintf("https://%s.%s%s", service, baseDomain, strings.TrimSpace(task.URL))
+	} else {
+		uri = fmt.Sprintf("https://%s-dot-%s.appspot.com%s", service, projectName, strings.TrimSpace(task.URL))
+	}
+
 	return []string{
 		"--project", projectName,
 		"scheduler", "jobs", operationType,
 		"http", task.Name,
 		"--location", GcpLocation,
 		"--schedule", task.Schedule,
-		"--uri", fmt.Sprintf("https://%s-dot-%s.appspot.com%s", service, projectName, strings.TrimSpace(task.URL)),
+		"--uri", uri,
 		"--description", description,
 		"--http-method", "get",
 		"--oidc-service-account-email", getCloudSchedulerServiceAccountEmail(),
@@ -319,14 +333,20 @@ func getExistingEntries(cmd *exec.Cmd) ExistingEntries {
 func main() {
 	if len(os.Args) < 4 || os.Args[1] == "" || os.Args[2] == "" || os.Args[3] == "" {
 		panic("Error - Invalid Parameters.\n" +
-			"Required params: 1 - Nomulus config YAML path; 2 - config XML path; 3 - project name;")
+			"Required params: 1 - Nomulus config YAML path; 2 - config XML path; 3 - project name;\n" +
+			"Optional params: 5 - [--gke]")
 	}
 	// Nomulus YAML config file path, used to extract OAuth client ID.
 	nomulusConfigFileLocation := os.Args[1]
 	// XML config file path
 	configFileLocation := os.Args[2]
 	// Project name where to submit the tasks
 	projectName = os.Args[3]
+	// Whether to deploy cloud scheduler tasks to run on GKE
+	if len(os.Args) > 4 && os.Args[4] == "--gke" {
+		gke = true
+		log.Default().Println("GKE mode enabled")
+	}
 
 	log.Default().Println("YAML Filepath " + nomulusConfigFileLocation)
 	yamlFile, err := os.Open(nomulusConfigFileLocation)
@@ -339,6 +359,8 @@ func main() {
 	if err := yaml.Unmarshal(byteValue, &yamlEntries); err != nil {
 		panic("Failed to parse YAML file entries: " + err.Error())
 	}
+
+	baseDomain = yamlEntries.GcpProject.BaseDomain
 	clientId = yamlEntries.Auth.OauthClientId
 
 	log.Default().Println("XML Filepath " + configFileLocation)