Use maven to build kube2msb

Issue-Id: OOM-61
Change-Id: Ic7e733c95e28b75b66535b343ae22c893db24531
Signed-off-by: HuabingZhao <zhao.huabing@zte.com.cn>

1 files changed, 195 insertions, 0 deletions

diff --git a/src/kube2msb/kube_work.go b/src/kube2msb/kube_work.go
new file mode 100644
index 0000000..4e99cbd
--- /dev/null
+++ b/src/kube2msb/kube_work.go
@@ -0,0 +1,195 @@
+/*
+Copyright 2017 ZTE, Inc. and others.
+
+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 main
+
+import (
+	"log"
+	"sync"
+
+	kapi "k8s.io/kubernetes/pkg/api"
+)
+
+type KubeBookKeeper interface {
+	AddService(*kapi.Service)
+	RemoveService(*kapi.Service)
+	UpdateService(*kapi.Service)
+	AddPod(*kapi.Pod)
+	RemovePod(*kapi.Pod)
+	UpdatePod(*kapi.Pod)
+}
+
+type ClientBookKeeper struct {
+	sync.Mutex
+	KubeBookKeeper
+	services map[string]*kapi.Service
+	pods     map[string]*kapi.Pod
+	msbQueue chan<- MSBWork
+}
+
+func newClientBookKeeper() *ClientBookKeeper {
+	return &ClientBookKeeper{
+		services: make(map[string]*kapi.Service),
+		pods:     make(map[string]*kapi.Pod),
+	}
+}
+
+func (client *ClientBookKeeper) AddService(svc *kapi.Service) {
+	client.Lock()
+	defer client.Unlock()
+	if _, ok := svc.ObjectMeta.Annotations[serviceKey]; !ok {
+		log.Println("Not the target, skip this ADD notification for service:", svc.Name)
+		return
+	}
+
+	if _, ok := client.services[svc.Name]; ok {
+		log.Printf("service:%s already exist. skip this ADD notification.", svc.Name)
+		return
+	}
+
+	if kapi.IsServiceIPSet(svc) {
+		if svc.Spec.Type == kapi.ServiceTypeClusterIP || svc.Spec.Type == kapi.ServiceTypeNodePort {
+			log.Printf("Adding %s service:%s", svc.Spec.Type, svc.Name)
+			client.msbQueue <- MSBWork{
+				Action:      MSBWorkAddService,
+				ServiceInfo: svc.ObjectMeta.Annotations[serviceKey],
+				IPAddress:   svc.Spec.ClusterIP,
+			}
+		} else if svc.Spec.Type == kapi.ServiceTypeLoadBalancer {
+			log.Println("Adding LoadBalancerIP service:", svc.Name)
+			client.msbQueue <- MSBWork{
+				Action:      MSBWorkAddService,
+				ServiceInfo: svc.ObjectMeta.Annotations[serviceKey],
+				IPAddress:   svc.Spec.LoadBalancerIP,
+			}
+		} else {
+			log.Printf("Service Type:%s for Service:%s is not supported", svc.Spec.Type, svc.Name)
+			return
+		}
+		client.services[svc.Name] = svc
+		log.Println("Queued Service to be added: ", svc.Name)
+	} else {
+		// if ClusterIP is not set, do not create a DNS records
+		log.Printf("Skipping dns record for headless service: %s\n", svc.Name)
+	}
+}
+
+func (client *ClientBookKeeper) RemoveService(svc *kapi.Service) {
+	client.Lock()
+	defer client.Unlock()
+	if _, ok := svc.ObjectMeta.Annotations[serviceKey]; !ok {
+		log.Println("Not the target, skip this Remove notification for service:", svc.Name)
+		return
+	}
+
+	if _, ok := client.services[svc.Name]; !ok {
+		log.Printf("Service:%s not exist. skip this REMOVE notification.", svc.Name)
+		return
+	}
+
+	if svc.Spec.Type == kapi.ServiceTypeClusterIP || svc.Spec.Type == kapi.ServiceTypeNodePort {
+		log.Printf("Removing %s service:%s", svc.Spec.Type, svc.Name)
+		//Perform All DNS Removes
+		client.msbQueue <- MSBWork{
+			Action:      MSBWorkRemoveService,
+			ServiceInfo: svc.ObjectMeta.Annotations[serviceKey],
+			IPAddress:   svc.Spec.ClusterIP,
+		}
+	} else if svc.Spec.Type == kapi.ServiceTypeLoadBalancer {
+		log.Println("Removing LoadBalancerIP service:", svc.Name)
+		client.msbQueue <- MSBWork{
+			Action:      MSBWorkRemoveService,
+			ServiceInfo: svc.ObjectMeta.Annotations[serviceKey],
+			IPAddress:   svc.Spec.LoadBalancerIP,
+		}
+	} else {
+		log.Printf("Service Type:%s for Service:%s is not supported", svc.Spec.Type, svc.Name)
+		return
+	}
+	delete(client.services, svc.Name)
+	log.Println("Queued Service to be removed: ", svc.Name)
+}
+
+func (client *ClientBookKeeper) UpdateService(svc *kapi.Service) {
+	if _, ok := svc.ObjectMeta.Annotations[serviceKey]; !ok {
+		log.Println("Not the target, skip this Update notification for service:", svc.Name)
+		return
+	}
+
+	client.RemoveService(svc)
+	client.AddService(svc)
+}
+
+func (client *ClientBookKeeper) AddPod(pod *kapi.Pod) {
+	client.Lock()
+	defer client.Unlock()
+	if _, ok := pod.Annotations[serviceKey]; !ok {
+		log.Println("Not the target, skip this ADD notification for pod:", pod.Name)
+		return
+	}
+
+	if _, ok := client.pods[pod.Name]; ok {
+		log.Printf("Pod:%s already exist. skip this ADD notification.", pod.Name)
+		return
+	}
+
+	//newly added Pod
+	if pod.Name == "" || pod.Status.PodIP == "" {
+		log.Printf("Pod:%s has neither name nor pod ip. skip this ADD notification.", pod.Name)
+		addMap[pod.Name] = pod
+		return
+	}
+
+	//Perform All DNS Adds
+	client.msbQueue <- MSBWork{
+		Action:      MSBWorkAddPod,
+		ServiceInfo: pod.Annotations[serviceKey],
+		IPAddress:   pod.Status.PodIP,
+	}
+	client.pods[pod.Name] = pod
+	log.Println("Queued Pod to be added: ", pod.Name)
+}
+
+func (client *ClientBookKeeper) RemovePod(pod *kapi.Pod) {
+	client.Lock()
+	defer client.Unlock()
+	if _, ok := pod.Annotations[serviceKey]; !ok {
+		log.Println("Not the target, skip this Remove notification for pod:", pod.Name)
+		return
+	}
+
+	if _, ok := client.pods[pod.Name]; !ok {
+		log.Printf("Pod:%s not exist. skip this REMOVE notification.", pod.Name)
+		return
+	}
+	//Perform All DNS Removes
+	client.msbQueue <- MSBWork{
+		Action:      MSBWorkRemovePod,
+		ServiceInfo: pod.Annotations[serviceKey],
+		IPAddress:   pod.Status.PodIP,
+	}
+	delete(client.pods, pod.Name)
+	log.Println("Queued Pod to be removed: ", pod.Name)
+}
+
+func (client *ClientBookKeeper) UpdatePod(pod *kapi.Pod) {
+	if _, ok := pod.Annotations[serviceKey]; !ok {
+		log.Println("Not the target, skip this Update notification for pod:", pod.Name)
+		return
+	}
+
+	client.RemovePod(pod)
+	client.AddPod(pod)
+}