Set maximum CPU and Memory requests on K8s (#1959)

* Set maximum CPU and Memory requests on K8s

pkg/util/config/config.go

@@ -54,6 +54,8 @@ type Resources struct {
 	DefaultMemoryLimit            string              `name:"default_memory_limit" default:"500Mi"`
 	MinCPULimit                   string              `name:"min_cpu_limit" default:"250m"`
 	MinMemoryLimit                string              `name:"min_memory_limit" default:"250Mi"`
+	MaxCPURequest                 string              `name:"max_cpu_request"`
+	MaxMemoryRequest              string              `name:"max_memory_request"`
 	PodEnvironmentConfigMap       spec.NamespacedName `name:"pod_environment_configmap"`
 	PodEnvironmentSecret          string              `name:"pod_environment_secret"`
 	NodeReadinessLabel            map[string]string   `name:"node_readiness_label" default:""`

pkg/util/util.go

@@ -367,3 +367,21 @@ func IsSmallerQuantity(requestStr, limitStr string) (bool, error) {
 
 	return request.Cmp(limit) == -1, nil
 }
+
+func MinResource(maxRequestStr, requestStr string) (resource.Quantity, error) {
+
+	isSmaller, err := IsSmallerQuantity(maxRequestStr, requestStr)
+	if isSmaller && err == nil {
+		maxRequest, err := resource.ParseQuantity(maxRequestStr)
+		if err != nil {
+			return maxRequest, err
+		}
+		return maxRequest, nil
+	}
+
+	request, err := resource.ParseQuantity(requestStr)
+	if err != nil {
+		return request, err
+	}
+	return request, nil
+}