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157 lines
5.0 KiB
157 lines
5.0 KiB
package broker
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import (
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"github.com/seaweedfs/seaweedfs/weed/glog"
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"github.com/seaweedfs/seaweedfs/weed/mq/pub_balancer"
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"github.com/seaweedfs/seaweedfs/weed/mq/sub_coordinator"
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"github.com/seaweedfs/seaweedfs/weed/mq/topic"
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"sync"
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"time"
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"github.com/seaweedfs/seaweedfs/weed/cluster"
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"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
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"github.com/seaweedfs/seaweedfs/weed/wdclient"
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"google.golang.org/grpc"
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"github.com/seaweedfs/seaweedfs/weed/pb"
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"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
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"github.com/seaweedfs/seaweedfs/weed/pb/master_pb"
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)
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type MessageQueueBrokerOption struct {
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Masters map[string]pb.ServerAddress
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FilerGroup string
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DataCenter string
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Rack string
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DefaultReplication string
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MaxMB int
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Ip string
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Port int
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Cipher bool
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VolumeServerAccess string // how to access volume servers
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}
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func (option *MessageQueueBrokerOption) BrokerAddress() pb.ServerAddress {
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return pb.NewServerAddress(option.Ip, option.Port, 0)
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}
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type MessageQueueBroker struct {
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mq_pb.UnimplementedSeaweedMessagingServer
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option *MessageQueueBrokerOption
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grpcDialOption grpc.DialOption
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MasterClient *wdclient.MasterClient
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filers map[pb.ServerAddress]struct{}
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currentFiler pb.ServerAddress
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localTopicManager *topic.LocalTopicManager
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Balancer *pub_balancer.Balancer
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lockAsBalancer *cluster.LiveLock
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Coordinator *sub_coordinator.Coordinator
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accessLock sync.Mutex
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}
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func NewMessageBroker(option *MessageQueueBrokerOption, grpcDialOption grpc.DialOption) (mqBroker *MessageQueueBroker, err error) {
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pub_broker_balancer := pub_balancer.NewBalancer()
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coordinator := sub_coordinator.NewCoordinator(pub_broker_balancer)
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mqBroker = &MessageQueueBroker{
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option: option,
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grpcDialOption: grpcDialOption,
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MasterClient: wdclient.NewMasterClient(grpcDialOption, option.FilerGroup, cluster.BrokerType, option.BrokerAddress(), option.DataCenter, option.Rack, *pb.NewServiceDiscoveryFromMap(option.Masters)),
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filers: make(map[pb.ServerAddress]struct{}),
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localTopicManager: topic.NewLocalTopicManager(),
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Balancer: pub_broker_balancer,
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Coordinator: coordinator,
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}
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mqBroker.MasterClient.SetOnPeerUpdateFn(mqBroker.OnBrokerUpdate)
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pub_broker_balancer.OnPartitionChange = mqBroker.Coordinator.OnPartitionChange
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pub_broker_balancer.OnAddBroker = mqBroker.Coordinator.OnSubAddBroker
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pub_broker_balancer.OnRemoveBroker = mqBroker.Coordinator.OnSubRemoveBroker
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go mqBroker.MasterClient.KeepConnectedToMaster()
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existingNodes := cluster.ListExistingPeerUpdates(mqBroker.MasterClient.GetMaster(), grpcDialOption, option.FilerGroup, cluster.FilerType)
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for _, newNode := range existingNodes {
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mqBroker.OnBrokerUpdate(newNode, time.Now())
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}
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// keep connecting to balancer
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go func() {
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for mqBroker.currentFiler == "" {
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time.Sleep(time.Millisecond * 237)
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}
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self := option.BrokerAddress()
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glog.V(0).Infof("broker %s found filer %s", self, mqBroker.currentFiler)
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newBrokerBalancerCh := make(chan string, 1)
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lockClient := cluster.NewLockClient(grpcDialOption, mqBroker.currentFiler)
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mqBroker.lockAsBalancer = lockClient.StartLongLivedLock(pub_balancer.LockBrokerBalancer, string(self), func(newLockOwner string) {
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glog.V(0).Infof("broker %s found balanacer %s", self, newLockOwner)
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newBrokerBalancerCh <- newLockOwner
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})
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mqBroker.KeepConnectedToBrokerBalancer(newBrokerBalancerCh)
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}()
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return mqBroker, nil
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}
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func (b *MessageQueueBroker) OnBrokerUpdate(update *master_pb.ClusterNodeUpdate, startFrom time.Time) {
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if update.NodeType != cluster.FilerType {
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return
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}
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address := pb.ServerAddress(update.Address)
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if update.IsAdd {
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b.filers[address] = struct{}{}
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if b.currentFiler == "" {
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b.currentFiler = address
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}
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} else {
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delete(b.filers, address)
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if b.currentFiler == address {
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for filer := range b.filers {
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b.currentFiler = filer
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break
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}
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}
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}
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}
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func (b *MessageQueueBroker) GetFiler() pb.ServerAddress {
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return b.currentFiler
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}
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func (b *MessageQueueBroker) WithFilerClient(streamingMode bool, fn func(filer_pb.SeaweedFilerClient) error) error {
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return pb.WithFilerClient(streamingMode, 0, b.GetFiler(), b.grpcDialOption, fn)
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}
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func (b *MessageQueueBroker) AdjustedUrl(location *filer_pb.Location) string {
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return location.Url
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}
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func (b *MessageQueueBroker) GetDataCenter() string {
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return ""
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}
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func (b *MessageQueueBroker) withMasterClient(streamingMode bool, master pb.ServerAddress, fn func(client master_pb.SeaweedClient) error) error {
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return pb.WithMasterClient(streamingMode, master, b.grpcDialOption, false, func(client master_pb.SeaweedClient) error {
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return fn(client)
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})
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}
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func (b *MessageQueueBroker) withBrokerClient(streamingMode bool, server pb.ServerAddress, fn func(client mq_pb.SeaweedMessagingClient) error) error {
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return pb.WithBrokerGrpcClient(streamingMode, server.String(), b.grpcDialOption, func(client mq_pb.SeaweedMessagingClient) error {
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return fn(client)
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})
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}
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