/
types.go
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/
types.go
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// Copyright 2020 Antrea Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package types
import (
corev1 "k8s.io/api/core/v1"
"k8s.io/klog/v2"
utilnet "k8s.io/utils/net"
mccommon "antrea.io/antrea/multicluster/controllers/multicluster/common"
"antrea.io/antrea/pkg/agent/config"
"antrea.io/antrea/pkg/agent/types"
"antrea.io/antrea/pkg/ovs/openflow"
k8sproxy "antrea.io/antrea/third_party/proxy"
)
// ServiceInfo is the internal struct for caching service information.
type ServiceInfo struct {
*k8sproxy.BaseServiceInfo
// cache for performance
OFProtocol openflow.Protocol
// IsNested means the Service's Endpoints could be another Service's ClusterIP.
// Currently it's true for Antrea Multi-cluster Service, determined by whether
// there is an Antrea Multi-cluster specific annotation.
IsNested bool
// The load balancer mode specified in annotations.
LoadBalancerMode *config.LoadBalancerMode
}
func getLoadBalancerMode(service *corev1.Service) *config.LoadBalancerMode {
if modeStr, exists := service.Annotations[types.ServiceLoadBalancerModeAnnotationKey]; exists {
ok, mode := config.GetLoadBalancerModeFromStr(modeStr)
if !ok {
klog.ErrorS(nil, "The Service's load balancer mode annotation is invalid", "Service", klog.KObj(service), "mode", modeStr)
return nil
}
return &mode
}
return nil
}
// NewServiceInfo returns a new k8sproxy.ServicePort which abstracts a serviceInfo.
func NewServiceInfo(port *corev1.ServicePort, service *corev1.Service, baseInfo *k8sproxy.BaseServiceInfo) k8sproxy.ServicePort {
info := &ServiceInfo{BaseServiceInfo: baseInfo}
info.IsNested = mccommon.IsMulticlusterService(service)
info.LoadBalancerMode = getLoadBalancerMode(service)
if utilnet.IsIPv6(baseInfo.ClusterIP()) {
info.OFProtocol = openflow.ProtocolTCPv6
if port.Protocol == corev1.ProtocolUDP {
info.OFProtocol = openflow.ProtocolUDPv6
} else if port.Protocol == corev1.ProtocolSCTP {
info.OFProtocol = openflow.ProtocolSCTPv6
}
} else {
info.OFProtocol = openflow.ProtocolTCP
if port.Protocol == corev1.ProtocolUDP {
info.OFProtocol = openflow.ProtocolUDP
} else if port.Protocol == corev1.ProtocolSCTP {
info.OFProtocol = openflow.ProtocolSCTP
}
}
return info
}
// NewEndpointInfo returns a new k8sproxy.Endpoint which abstracts an endpointsInfo.
func NewEndpointInfo(baseInfo *k8sproxy.BaseEndpointInfo) k8sproxy.Endpoint {
return baseInfo
}
type EndpointsMap map[k8sproxy.ServicePortName]map[string]k8sproxy.Endpoint