Store default Nomad job in apiClient to cache it

nomad/job.go

@@ -17,9 +17,9 @@ const (
 	TaskNameFormat      = "%s-task"
 )
 
-func (apiClient *ApiClient) defaultJob() *nomadApi.Job {
+func parseJob(jobHCL string) *nomadApi.Job {
 	config := jobspec2.ParseConfig{
-		Body:    []byte(defaultJobHCL),
+		Body:    []byte(jobHCL),
 		AllowFS: false,
 		Strict:  true,
 	}
@@ -119,14 +119,14 @@ func (apiClient *ApiClient) createJob(
 	networkAccess bool,
 	exposedPorts []uint16) *nomadApi.Job {
 
-	job := apiClient.defaultJob()
+	job := apiClient.defaultJob
 	job.ID = &id
 	job.Name = &id
 
 	var taskGroup = createTaskGroup(&job, fmt.Sprintf(TaskGroupNameFormat, id), prewarmingPoolSize)
 	configureTask(taskGroup, fmt.Sprintf(TaskNameFormat, id), cpuLimit, memoryLimit, image, networkAccess, exposedPorts)
 
-	return job
+	return &job
 }
 
 // LoadJobList loads the list of jobs from the Nomad api.

nomad/nomad.go

@@ -19,6 +19,8 @@ type ExecutorApi interface {
 // ApiClient implements the ExecutorApi interface and can be used to perform different operations on the real Executor API and its return values.
 type ApiClient struct {
 	apiQuerier
+	client     *nomadApi.Client
+	defaultJob nomadApi.Job
 }
 
 // NewExecutorApi creates a new api client.
@@ -35,8 +37,12 @@ func (apiClient *ApiClient) init(nomadURL *url.URL) (err error) {
 		Address:   nomadURL.String(),
 		TLSConfig: &nomadApi.TLSConfig{},
 	})
+	if err != nil {
 		return err
 	}
+	apiClient.defaultJob = *parseJob(defaultJobHCL)
+	return nil
+}
 
 // LoadRunners loads the allocations of the specified job.
 func (apiClient *ApiClient) LoadRunners(jobId string) (runnerIds []string, err error) {