68 lines
2.1 KiB
Go
68 lines
2.1 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package gce
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import "k8s.io/api/core/v1"
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type LoadBalancerType string
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const (
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// ServiceAnnotationLoadBalancerType is annotated on a service with type LoadBalancer
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// dictates what specific kind of GCP LB should be assembled.
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// Currently, only "internal" is supported.
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ServiceAnnotationLoadBalancerType = "cloud.google.com/load-balancer-type"
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LBTypeInternal LoadBalancerType = "internal"
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// ServiceAnnotationInternalBackendShare is annotated on a service with "true" when users
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// want to share GCP Backend Services for a set of internal load balancers.
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// ALPHA feature - this may be removed in a future release.
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ServiceAnnotationILBBackendShare = "cloud.google.com/load-balancer-backend-share"
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)
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// GetLoadBalancerAnnotationType returns the type of GCP load balancer which should be assembled.
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func GetLoadBalancerAnnotationType(service *v1.Service) (LoadBalancerType, bool) {
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v := LoadBalancerType("")
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if service.Spec.Type != v1.ServiceTypeLoadBalancer {
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return v, false
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}
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l, ok := service.Annotations[ServiceAnnotationLoadBalancerType]
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v = LoadBalancerType(l)
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if !ok {
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return v, false
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}
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switch v {
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case LBTypeInternal:
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return v, true
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default:
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return v, false
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}
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}
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// GetLoadBalancerAnnotationBackendShare returns whether this service's backend service should be
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// shared with other load balancers. Health checks and the healthcheck firewall will be shared regardless.
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func GetLoadBalancerAnnotationBackendShare(service *v1.Service) bool {
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l, exists := service.Annotations[ServiceAnnotationILBBackendShare]
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if exists && l == "true" {
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return true
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}
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return false
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}
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