| /* |
| * Copyright 2018-present Open Networking Foundation |
| |
| * 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 ( |
| "time" |
| "regexp" |
| "errors" |
| "strconv" |
| |
| "k8s.io/client-go/rest" |
| "google.golang.org/grpc" |
| "golang.org/x/net/context" |
| "k8s.io/client-go/kubernetes" |
| "github.com/golang/protobuf/ptypes" |
| "github.com/opencord/voltha-go/common/log" |
| kafka "github.com/opencord/voltha-go/kafka" |
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" |
| empty "github.com/golang/protobuf/ptypes/empty" |
| vpb "github.com/opencord/voltha-go/protos/voltha" |
| cmn "github.com/opencord/voltha-go/protos/common" |
| pb "github.com/opencord/voltha-go/protos/afrouter" |
| ic "github.com/opencord/voltha-go/protos/inter_container" |
| ) |
| |
| type configConn struct { |
| Server string `json:"Server"` |
| Cluster string `json:"Cluster"` |
| Backend string `json:"Backend"` |
| connections map[string]connection |
| } |
| |
| type connection struct { |
| Name string `json:"Connection"` |
| Addr string `json:"Addr"` |
| Port uint64 `json:"Port"` |
| } |
| |
| type volthaPod struct { |
| name string |
| ipAddr string |
| node string |
| devIds map[string]struct{} |
| cluster string |
| backend string |
| connection string |
| } |
| |
| type podTrack struct { |
| pod *volthaPod |
| dn bool |
| } |
| |
| var nPods int = 6 |
| |
| // Topic is affinityRouter |
| // port: 9092 |
| |
| func newKafkaClient(clientType string, host string, port int, instanceID string) (kafka.Client, error) { |
| |
| log.Infow("kafka-client-type", log.Fields{"client": clientType}) |
| switch clientType { |
| case "sarama": |
| return kafka.NewSaramaClient( |
| kafka.Host(host), |
| kafka.Port(port), |
| kafka.ConsumerType(kafka.GroupCustomer), |
| kafka.ProducerReturnOnErrors(true), |
| kafka.ProducerReturnOnSuccess(true), |
| kafka.ProducerMaxRetries(6), |
| kafka.NumPartitions(3), |
| kafka.ConsumerGroupName(instanceID), |
| kafka.ConsumerGroupPrefix(instanceID), |
| kafka.AutoCreateTopic(false), |
| kafka.ProducerFlushFrequency(5), |
| kafka.ProducerRetryBackoff(time.Millisecond*30)), nil |
| } |
| return nil, errors.New("unsupported-client-type") |
| } |
| |
| |
| func k8sClientSet() *kubernetes.Clientset { |
| // creates the in-cluster config |
| config, err := rest.InClusterConfig() |
| if err != nil { |
| panic(err.Error()) |
| } |
| // creates the clientset |
| clientset, err := kubernetes.NewForConfig(config) |
| if err != nil { |
| panic(err.Error()) |
| } |
| |
| return clientset |
| } |
| |
| |
| func connect(addr string) (*grpc.ClientConn, error) { |
| for ctr :=0 ; ctr < 100; ctr++ { |
| log.Debugf("Trying to connect to %s", addr) |
| conn, err := grpc.Dial(addr, grpc.WithInsecure()) |
| if err != nil { |
| log.Debugf("Attempt to connect failed, retrying %v:", err) |
| } else { |
| log.Debugf("Connection succeeded") |
| return conn,err |
| } |
| time.Sleep(10 * time.Second) |
| } |
| log.Debugf("Too many connection attempts, giving up!") |
| return nil,errors.New("Timeout attempting to conect") |
| } |
| |
| func getVolthaPods(cs *kubernetes.Clientset, coreFilter * regexp.Regexp) []*volthaPod { |
| var rtrn []*volthaPod |
| |
| pods, err := cs.CoreV1().Pods("").List(metav1.ListOptions{}) |
| if err != nil { |
| panic(err.Error()) |
| } |
| //log.Debugf("There are a total of %d pods in the cluster\n", len(pods.Items)) |
| |
| for _,v := range pods.Items { |
| if v.Namespace == "voltha" && coreFilter.MatchString(v.Name) { |
| log.Debugf("Namespace: %s, PodName: %s, PodIP: %s, Host: %s\n", v.Namespace, v.Name, |
| v.Status.PodIP, v.Spec.NodeName) |
| // Only add the pod if it has an IP address. If it doesn't then it likely crashed and |
| // and is still in the process of getting re-started. |
| if v.Status.PodIP != "" { |
| rtrn = append(rtrn, &volthaPod{name:v.Name,ipAddr:v.Status.PodIP,node:v.Spec.NodeName, |
| devIds:make(map[string]struct{}), backend:"", connection:""}) |
| } |
| } |
| } |
| return rtrn |
| } |
| |
| func reconcilePodDeviceIds(pod * volthaPod, ids map[string]struct{}) bool { |
| var idList cmn.IDs |
| for k,_ := range ids { |
| idList.Items = append(idList.Items, &cmn.ID{Id:k}) |
| } |
| conn,err := connect(pod.ipAddr+":50057") |
| defer conn.Close() |
| if err != nil { |
| log.Debugf("Could not query devices from %s, could not connect", pod.name) |
| return false |
| } |
| client := vpb.NewVolthaServiceClient(conn) |
| _,err = client.ReconcileDevices(context.Background(), &idList) |
| if err != nil { |
| log.Error(err) |
| return false |
| } |
| |
| return true |
| } |
| |
| func queryPodDeviceIds(pod * volthaPod) map[string]struct{} { |
| var rtrn map[string]struct{} = make(map[string]struct{}) |
| // Open a connection to the pod |
| // port 50057 |
| conn, err := connect(pod.ipAddr+":50057") |
| if err != nil { |
| log.Debugf("Could not query devices from %s, could not connect", pod.name) |
| return rtrn |
| } |
| defer conn.Close() |
| client := vpb.NewVolthaServiceClient(conn) |
| devs,err := client.ListDeviceIds(context.Background(), &empty.Empty{}) |
| if err != nil { |
| log.Error(err) |
| return rtrn |
| } |
| for _,dv := range devs.Items { |
| rtrn[dv.Id]=struct{}{} |
| } |
| |
| return rtrn |
| } |
| |
| func queryDeviceIds(pods []*volthaPod) { |
| for pk,_ := range pods { |
| // Keep the old Id list if a new list is not returned |
| if idList := queryPodDeviceIds(pods[pk]); len(idList) != 0 { |
| pods[pk].devIds = idList |
| } |
| } |
| } |
| |
| func allEmpty(pods []*volthaPod) bool { |
| for k,_ := range pods { |
| if len(pods[k].devIds) != 0 { |
| return false |
| } |
| } |
| return true |
| } |
| |
| func rmPod(pods []*volthaPod, idx int) []*volthaPod { |
| return append(pods[:idx],pods[idx+1:]...) |
| } |
| |
| func groupIntersectingPods1(pods []*volthaPod, podCt int) ([][]*volthaPod,[]*volthaPod) { |
| var rtrn [][]*volthaPod |
| var out []*volthaPod |
| |
| for { |
| if len(pods) == 0 { |
| break |
| } |
| if len(pods[0].devIds) == 0 { // Ignore pods with no devices |
| ////log.Debugf("%s empty pod", pd[k].pod.name) |
| out = append(out, pods[0]) |
| pods = rmPod(pods, 0) |
| continue |
| } |
| // Start a pod group with this pod |
| var grp []*volthaPod |
| grp = append(grp, pods[0]) |
| pods = rmPod(pods,0) |
| //log.Debugf("Creating new group %s", pd[k].pod.name) |
| // Find the peer pod based on device overlap |
| // It's ok if one isn't found, an empty one will be used instead |
| for k,_ := range pods { |
| if len(pods[k].devIds) == 0 { // Skip pods with no devices |
| //log.Debugf("%s empty pod", pd[k1].pod.name) |
| continue |
| } |
| if intersect(grp[0].devIds, pods[k].devIds) == true { |
| //log.Debugf("intersection found %s:%s", pd[k].pod.name, pd[k1].pod.name) |
| if grp[0].node == pods[k].node { |
| // This should never happen |
| log.Errorf("pods %s and %s intersect and are on the same server!! Not pairing", |
| grp[0].name, pods[k].name) |
| continue |
| } |
| grp = append(grp, pods[k]) |
| pods = rmPod(pods, k) |
| break |
| |
| } |
| } |
| rtrn = append(rtrn, grp) |
| //log.Debugf("Added group %s", grp[0].name) |
| // Check if the number of groups = half the pods, if so all groups are started. |
| if len(rtrn) == podCt >> 1 { |
| // Append any remaining pods to out |
| out = append(out,pods[0:]...) |
| break |
| } |
| } |
| return rtrn,out |
| } |
| |
| func unallocPodCount(pd []*podTrack) int { |
| var rtrn int = 0 |
| for _,v := range pd { |
| if v.dn == false { |
| rtrn++ |
| } |
| } |
| return rtrn |
| } |
| |
| |
| func sameNode(pod *volthaPod, grps [][]*volthaPod) bool { |
| for _,v := range grps { |
| if v[0].node == pod.node { |
| return true |
| } |
| if len(v) == 2 && v[1].node == pod.node { |
| return true |
| } |
| } |
| return false |
| } |
| |
| func startRemainingGroups1(grps [][]*volthaPod, pods []*volthaPod, podCt int) ([][]*volthaPod, []*volthaPod) { |
| var grp []*volthaPod |
| |
| for k,_ := range pods { |
| if sameNode(pods[k], grps) { |
| continue |
| } |
| grp = []*volthaPod{} |
| grp = append(grp, pods[k]) |
| pods = rmPod(pods, k) |
| grps = append(grps, grp) |
| if len(grps) == podCt >> 1 { |
| break |
| } |
| } |
| return grps, pods |
| } |
| |
| func hasSingleSecondNode(grp []*volthaPod) bool { |
| var srvrs map[string]struct{} = make(map[string]struct{}) |
| for k,_ := range grp { |
| if k == 0 { |
| continue // Ignore the first item |
| } |
| srvrs[grp[k].node] = struct{}{} |
| } |
| if len(srvrs) == 1 { |
| return true |
| } |
| return false |
| } |
| |
| func addNode(grps [][]*volthaPod, idx *volthaPod, item *volthaPod) [][]*volthaPod { |
| for k,_ := range grps { |
| if grps[k][0].name == idx.name { |
| grps[k] = append(grps[k], item) |
| return grps |
| } |
| } |
| // TODO: Error checking required here. |
| return grps |
| } |
| |
| func removeNode(grps [][]*volthaPod, item *volthaPod) [][]*volthaPod { |
| for k,_ := range grps { |
| for k1,_ := range grps[k] { |
| if grps[k][k1].name == item.name { |
| grps[k] = append(grps[k][:k1],grps[k][k1+1:]...) |
| break |
| } |
| } |
| } |
| return grps |
| } |
| |
| func groupRemainingPods1(grps [][]*volthaPod, pods []*volthaPod) [][]*volthaPod { |
| var lgrps [][]*volthaPod |
| // All groups must be started when this function is called. |
| // Copy incomplete groups |
| for k,_ := range grps { |
| if len(grps[k]) != 2 { |
| lgrps = append(lgrps, grps[k]) |
| } |
| } |
| |
| // Add all pairing candidates to each started group. |
| for k,_ := range pods { |
| for k2,_ := range lgrps { |
| if lgrps[k2][0].node != pods[k].node { |
| lgrps[k2] = append(lgrps[k2], pods[k]) |
| } |
| } |
| } |
| |
| //TODO: If any member of lgrps doesn't have at least 2 |
| // nodes something is wrong. Check for that here |
| |
| for { |
| for { // Address groups with only a single server choice |
| var ssn bool = false |
| |
| for k,_ := range lgrps { |
| // Now if any of the groups only have a single |
| // node as the choice for the second member |
| // address that one first. |
| if hasSingleSecondNode(lgrps[k]) == true { |
| ssn = true |
| // Add this pairing to the groups |
| grps = addNode(grps, lgrps[k][0], lgrps[k][1]) |
| // Since this node is now used, remove it from all |
| // remaining tenative groups |
| lgrps = removeNode(lgrps, lgrps[k][1]) |
| // Now remove this group completely since |
| // it's been addressed |
| lgrps = append(lgrps[:k],lgrps[k+1:]...) |
| break |
| } |
| } |
| if ssn == false { |
| break |
| } |
| } |
| // Now adress one of the remaining groups |
| if len(lgrps) == 0 { |
| break // Nothing left to do, exit the loop |
| } |
| grps = addNode(grps, lgrps[0][0], lgrps[0][1]) |
| lgrps = removeNode(lgrps, lgrps[0][1]) |
| lgrps = append(lgrps[:0],lgrps[1:]...) |
| } |
| return grps |
| } |
| |
| func groupPods1(pods []*volthaPod) [][]*volthaPod { |
| var rtrn [][]*volthaPod |
| var podCt int = len(pods) |
| |
| rtrn,pods = groupIntersectingPods1(pods, podCt) |
| // There are several outcomes here |
| // 1) All pods have been paired and we're done |
| // 2) Some un-allocated pods remain |
| // 2.a) All groups have been started |
| // 2.b) Not all groups have been started |
| if len(pods) == 0 { |
| return rtrn |
| } else if len(rtrn) == podCt >> 1 { // All groupings started |
| // Allocate the remaining (presumably empty) pods to the started groups |
| return groupRemainingPods1(rtrn, pods) |
| } else { // Some groupings started |
| // Start empty groups with remaining pods |
| // each grouping is on a different server then |
| // allocate remaining pods. |
| rtrn, pods = startRemainingGroups1(rtrn, pods, podCt) |
| return groupRemainingPods1(rtrn, pods) |
| } |
| } |
| |
| func intersect(d1 map[string]struct{}, d2 map[string]struct{}) bool { |
| for k,_ := range d1 { |
| if _,ok := d2[k]; ok == true { |
| return true |
| } |
| } |
| return false |
| } |
| |
| func setConnection(client pb.ConfigurationClient, cluster string, backend string, connection string, addr string, port uint64) { |
| log.Debugf("Configuring backend %s : connection %s\n\n", backend, connection) |
| cnf := &pb.Conn{Server:"grpc_command",Cluster:cluster, Backend:backend, |
| Connection:connection,Addr:addr, |
| Port:port} |
| if res, err := client.SetConnection(context.Background(), cnf); err != nil { |
| log.Debugf("failed SetConnection RPC call: %s", err) |
| } else { |
| log.Debugf("Result: %v", res) |
| } |
| } |
| |
| func setAffinity(client pb.ConfigurationClient, ids map[string]struct{}, backend string) { |
| log.Debugf("Configuring backend %s : affinities \n", backend) |
| aff := &pb.Affinity{Router:"vcore",Route:"dev_manager",Cluster:"vcore",Backend:backend} |
| for k,_ := range ids { |
| log.Debugf("Setting affinity for id %s", k) |
| aff.Id = k |
| if res, err := client.SetAffinity(context.Background(), aff); err != nil { |
| log.Debugf("failed affinity RPC call: %s", err) |
| } else { |
| log.Debugf("Result: %v", res) |
| } |
| } |
| } |
| |
| func getBackendForCore(coreId string, coreGroups [][]*volthaPod) string { |
| for _,v := range coreGroups { |
| for _,v2 := range v { |
| if v2.name == coreId { |
| return v2.backend |
| } |
| } |
| } |
| log.Errorf("No backend found for core %s\n", coreId) |
| return "" |
| } |
| |
| func monitorDiscovery(client pb.ConfigurationClient, |
| ch <-chan *ic.InterContainerMessage, |
| coreGroups [][]*volthaPod) { |
| var id map[string]struct{} = make(map[string]struct{}) |
| |
| select { |
| case msg := <-ch: |
| log.Debugf("Received a device discovery notification") |
| device := &ic.DeviceDiscovered{} |
| if err := ptypes.UnmarshalAny(msg.Body, device); err != nil { |
| log.Errorf("Could not unmarshal received notification %v", msg) |
| } else { |
| // Set the affinity of the discovered device. |
| if be := getBackendForCore(device.Id, coreGroups); be != "" { |
| id[device.Id]=struct{}{} |
| setAffinity(client, id, be) |
| } else { |
| log.Error("Cant use an empty string as a backend name") |
| } |
| } |
| break |
| } |
| } |
| |
| func startDiscoveryMonitor(client pb.ConfigurationClient, |
| coreGroups [][]*volthaPod) error { |
| var ch <-chan *ic.InterContainerMessage |
| // Connect to kafka for discovery events |
| topic := &kafka.Topic{Name: "AffinityRouter"} |
| kc,err := newKafkaClient("sarama", "kafka", 9092, "arouterd") |
| kc.Start() |
| |
| if ch, err = kc.Subscribe(topic); err != nil { |
| log.Error("Could not subscribe to the 'AffinityRouter' channel, discovery disabled") |
| return err |
| } |
| go monitorDiscovery(client, ch, coreGroups) |
| return nil |
| } |
| |
| // Determines which items in core groups |
| // have changed based on the list provided |
| // and returns a coreGroup with only the changed |
| // items and a pod list with the new items |
| func getAddrDiffs(coreGroups [][]*volthaPod, rwPods []*volthaPod) ([][]*volthaPod, []*volthaPod) { |
| var nList []*volthaPod |
| var rtrn [][]*volthaPod = make([][]*volthaPod, nPods>>1) |
| var ipAddrs map[string]struct{} = make(map[string]struct{}) |
| |
| log.Debug("Get addr diffs") |
| |
| // Start with an empty array |
| for k,_ := range rtrn { |
| rtrn[k] = make([]*volthaPod, 2) |
| } |
| |
| // Build a list with only the new items |
| for _,v := range rwPods { |
| if hasIpAddr(coreGroups, v.ipAddr) == false { |
| nList = append(nList, v) |
| } |
| ipAddrs[v.ipAddr] = struct{}{} // for the search below |
| } |
| |
| // Now build the coreGroups with only the changed items |
| for k1,v1 := range coreGroups { |
| for k2,v2 := range v1 { |
| if _,ok := ipAddrs[v2.ipAddr]; ok == false { |
| rtrn[k1][k2] = v2 |
| } |
| } |
| } |
| return rtrn, nList |
| } |
| |
| // Figure out where best to put the new pods |
| // in the coreGroup array based on the old |
| // pods being replaced. The criteria is that |
| // the new pod be on the same server as the |
| // old pod was. |
| func reconcileAddrDiffs(coreGroupDiffs [][]*volthaPod, rwPodDiffs []*volthaPod) ([][]*volthaPod) { |
| var srvrs map[string][]*volthaPod = make(map[string][]*volthaPod) |
| |
| log.Debug("Reconciling diffs") |
| log.Debug("Building server list") |
| for _,v := range rwPodDiffs { |
| log.Debugf("Adding %v to the server list", *v) |
| srvrs[v.node] = append(srvrs[v.node], v) |
| } |
| |
| for k1,v1 := range coreGroupDiffs { |
| log.Debugf("k1:%v, v1:%v", k1,v1) |
| for k2,v2 := range v1 { |
| log.Debugf("k2:%v, v2:%v", k2,v2) |
| if v2 == nil { // Nothing to do here |
| continue |
| } |
| if _,ok := srvrs[v2.node]; ok == true { |
| coreGroupDiffs[k1][k2] = srvrs[v2.node][0] |
| if len(srvrs[v2.node]) > 1 { // remove one entry from the list |
| srvrs[v2.node] = append(srvrs[v2.node][:0], srvrs[v2.node][1:]...) |
| } else { // Delete the endtry from the map |
| delete(srvrs, v2.node) |
| } |
| } else { |
| log.Error("This should never happen, node appears to have changed names") |
| // attempt to limp along by keeping this old entry |
| } |
| } |
| } |
| |
| return coreGroupDiffs |
| } |
| |
| func applyAddrDiffs(client pb.ConfigurationClient, coreList interface{}, nPods []*volthaPod) { |
| var newEntries [][]*volthaPod |
| |
| log.Debug("Applying diffs") |
| switch cores := coreList.(type) { |
| case [][]*volthaPod: |
| newEntries = reconcileAddrDiffs(getAddrDiffs(cores, nPods)) |
| |
| // Now replace the information in coreGropus with the new |
| // entries and then reconcile the device ids on the core |
| // that's in the new entry with the device ids of it's |
| // active-active peer. |
| for k1,v1 := range cores { |
| for k2,v2 := range v1 { |
| if newEntries[k1][k2] != nil { |
| // TODO: Missing is the case where bothe the primary |
| // and the secondary core crash and come back. |
| // Pull the device ids from the active-active peer |
| ids := queryPodDeviceIds(cores[k1][k2^1]) |
| if len(ids) != 0 { |
| if reconcilePodDeviceIds(newEntries[k1][k2], ids) == false { |
| log.Errorf("Attempt to reconcile ids on pod %v failed",newEntries[k1][k2]) |
| } |
| } |
| // Send the affininty router new connection information |
| setConnection(client, "vcore", v2.backend, v2.connection, newEntries[k1][k2].ipAddr, 50057) |
| // Copy the new entry information over |
| cores[k1][k2].ipAddr = newEntries[k1][k2].ipAddr |
| cores[k1][k2].name = newEntries[k1][k2].name |
| cores[k1][k2].devIds = ids |
| } |
| } |
| } |
| case []*volthaPod: |
| var mia []*volthaPod |
| var found bool |
| // TODO: Break this using functions to simplify |
| // reading of the code. |
| // Find the core(s) that have changed addresses |
| for k1,v1 := range cores { |
| found = false |
| for _, v2 := range nPods { |
| if v1.ipAddr == v2.ipAddr { |
| found = true |
| break |
| } |
| } |
| if found == false { |
| mia = append(mia, cores[k1]) |
| } |
| } |
| // Now plug in the new addresses and set the connection |
| for _,v1 := range nPods { |
| found = false |
| for _,v2 := range cores { |
| if v1.ipAddr == v2.ipAddr { |
| found = true |
| break |
| } |
| } |
| if found == true { |
| continue |
| } |
| mia[0].ipAddr = v1.ipAddr |
| mia[0].name = v1.name |
| setConnection(client, "ro_vcore", mia[0].backend, mia[0].connection, v1.ipAddr, 50057) |
| // Now get rid of the mia entry just processed |
| mia = append(mia[:0],mia[1:]...) |
| } |
| default: |
| log.Error("Internal: Unexpected type in call to applyAddrDiffs"); |
| } |
| } |
| |
| func updateDeviceIds(coreGroups [][]*volthaPod, rwPods []*volthaPod) { |
| var byName map[string]*volthaPod = make(map[string]*volthaPod) |
| |
| // Convinience |
| for _,v := range rwPods { |
| byName[v.name] = v |
| } |
| |
| for k1,v1 := range coreGroups { |
| for k2,_ := range v1 { |
| coreGroups[k1][k2].devIds = byName[v1[k2].name].devIds |
| } |
| } |
| } |
| |
| func startCoreMonitor(client pb.ConfigurationClient, |
| clientset *kubernetes.Clientset, |
| rwCoreFltr *regexp.Regexp, |
| roCoreFltr *regexp.Regexp, |
| coreGroups [][]*volthaPod, |
| oRoPods []*volthaPod) error { |
| // Now that initial allocation has been completed, monitor the pods |
| // for IP changes |
| // The main loop needs to do the following: |
| // 1) Periodically query the pods and filter out |
| // the vcore ones |
| // 2) Validate that the pods running are the same |
| // as the previous check |
| // 3) Validate that the IP addresses are the same |
| // as the last check. |
| // If the pod name(s) ha(s/ve) changed then remove |
| // the unused pod names and add in the new pod names |
| // maintaining the cluster/backend information. |
| // If an IP address has changed (which shouldn't |
| // happen unless a pod is re-started) it should get |
| // caught by the pod name change. |
| for { |
| time.Sleep(10 * time.Second) // Wait a while |
| // Get the rw core list from k8s |
| rwPods := getVolthaPods(clientset, rwCoreFltr) |
| queryDeviceIds(rwPods) |
| updateDeviceIds(coreGroups, rwPods) |
| // If we didn't get 2n+1 pods then wait since |
| // something is down and will hopefully come |
| // back up at some point. |
| // TODO: remove the 6 pod hardcoding |
| if len(rwPods) != 6 { |
| continue |
| } |
| // We have all pods, check if any IP addresses |
| // have changed. |
| for _,v := range rwPods { |
| if hasIpAddr(coreGroups, v.ipAddr) == false { |
| log.Debug("Address has changed...") |
| applyAddrDiffs(client, coreGroups, rwPods) |
| break |
| } |
| } |
| |
| roPods := getVolthaPods(clientset, roCoreFltr) |
| |
| if len(roPods) != 3 { |
| continue |
| } |
| for _,v := range roPods { |
| if hasIpAddr(oRoPods, v.ipAddr) == false { |
| applyAddrDiffs(client, oRoPods, roPods) |
| break |
| } |
| } |
| |
| } |
| } |
| |
| func hasIpAddr(coreList interface{}, ipAddr string) bool { |
| switch cores := coreList.(type) { |
| case []*volthaPod: |
| for _,v := range cores { |
| if v.ipAddr == ipAddr { |
| return true |
| } |
| } |
| case [][]*volthaPod: |
| for _,v1 := range cores { |
| for _,v2 := range v1 { |
| if v2.ipAddr == ipAddr { |
| return true |
| } |
| } |
| } |
| default: |
| log.Error("Internal: Unexpected type in call to hasIpAddr") |
| } |
| return false |
| } |
| |
| |
| func main() { |
| // This is currently hard coded to a cluster with 3 servers |
| //var connections map[string]configConn = make(map[string]configConn) |
| //var rwCorePodsPrev map[string]rwPod = make(map[string]rwPod) |
| var err error |
| var conn *grpc.ClientConn |
| |
| |
| // Set up the regular expression to identify the voltha cores |
| rwCoreFltr := regexp.MustCompile(`rw-core[0-9]-`) |
| roCoreFltr := regexp.MustCompile(`ro-core-`) |
| |
| // Set up logging |
| if _, err := log.SetDefaultLogger(log.JSON, 0, nil); err != nil { |
| log.With(log.Fields{"error": err}).Fatal("Cannot setup logging") |
| } |
| |
| // Set up kubernetes api |
| clientset := k8sClientSet() |
| |
| // Connect to the affinity router and set up the client |
| conn, err = connect("localhost:55554") // This is a sidecar container so communicating over localhost |
| defer conn.Close() |
| if err != nil { |
| panic(err.Error()) |
| } |
| client := pb.NewConfigurationClient(conn) |
| |
| // Get the voltha rw-core podes |
| rwPods := getVolthaPods(clientset, rwCoreFltr) |
| |
| // Fetch the devices held by each running core |
| queryDeviceIds(rwPods) |
| |
| // For debugging... comment out l8r |
| for _,v := range rwPods { |
| log.Debugf("Pod list %v", *v) |
| } |
| |
| coreGroups := groupPods1(rwPods) |
| |
| // Assign the groupings to the the backends and connections |
| for k,_ := range coreGroups { |
| for k1,_ := range coreGroups[k] { |
| coreGroups[k][k1].cluster = "vcore" |
| coreGroups[k][k1].backend = "vcore"+strconv.Itoa(k+1) |
| coreGroups[k][k1].connection = "vcore"+strconv.Itoa(k+1)+strconv.Itoa(k1+1) |
| } |
| } |
| log.Info("Core gouping completed") |
| |
| // TODO: Debugging code, comment out for production |
| for k,v := range coreGroups { |
| for k2,v2 := range v { |
| log.Debugf("Core group %d,%d: %v", k, k2, v2) |
| } |
| } |
| log.Info("Setting affinities") |
| // Now set the affinities for exising devices in the cores |
| for _,v := range coreGroups { |
| setAffinity(client, v[0].devIds, v[0].backend) |
| setAffinity(client, v[1].devIds, v[1].backend) |
| } |
| log.Info("Setting connections") |
| // Configure the backeds based on the calculated core groups |
| for _,v := range coreGroups { |
| setConnection(client, "vcore", v[0].backend, v[0].connection, v[0].ipAddr, 50057) |
| setConnection(client, "vcore", v[1].backend, v[1].connection, v[1].ipAddr, 50057) |
| } |
| |
| // Process the read only pods |
| roPods := getVolthaPods(clientset, roCoreFltr) |
| for k,v := range roPods { |
| log.Debugf("Processing ro_pod %v", v) |
| vN := "ro_vcore"+strconv.Itoa(k+1) |
| log.Debugf("Setting connection %s, %s, %s", vN, vN+"1", v.ipAddr) |
| roPods[k].cluster = "ro_core" |
| roPods[k].backend = vN |
| roPods[k].connection = vN+"1" |
| setConnection(client, "ro_vcore", v.backend, v.connection, v.ipAddr, 50057) |
| } |
| |
| log.Info("Starting discovery monitoring") |
| startDiscoveryMonitor(client, coreGroups) |
| |
| log.Info("Starting core monitoring") |
| startCoreMonitor(client, clientset, rwCoreFltr, |
| roCoreFltr, coreGroups, roPods) // Never returns |
| return |
| } |
| |