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114 lines
3.2 KiB
114 lines
3.2 KiB
package broker
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import (
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"context"
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"time"
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"google.golang.org/grpc"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/pb"
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"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
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"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
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)
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type MessageBrokerOption struct {
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Filers []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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}
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type MessageBroker struct {
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option *MessageBrokerOption
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grpcDialOption grpc.DialOption
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topicManager *TopicManager
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}
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func NewMessageBroker(option *MessageBrokerOption, grpcDialOption grpc.DialOption) (messageBroker *MessageBroker, err error) {
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messageBroker = &MessageBroker{
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option: option,
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grpcDialOption: grpcDialOption,
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}
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messageBroker.topicManager = NewTopicManager(messageBroker)
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messageBroker.checkFilers()
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go messageBroker.keepConnectedToOneFiler()
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return messageBroker, nil
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}
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func (broker *MessageBroker) keepConnectedToOneFiler() {
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for {
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for _, filer := range broker.option.Filers {
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broker.withFilerClient(filer, func(client filer_pb.SeaweedFilerClient) error {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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stream, err := client.KeepConnected(ctx)
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if err != nil {
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glog.V(0).Infof("%s:%d failed to keep connected to %s: %v", broker.option.Ip, broker.option.Port, filer, err)
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return err
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}
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initRequest := &filer_pb.KeepConnectedRequest{
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Name: broker.option.Ip,
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GrpcPort: uint32(broker.option.Port),
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}
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for _, tp := range broker.topicManager.ListTopicPartitions() {
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initRequest.Resources = append(initRequest.Resources, tp.String())
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}
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if err := stream.Send(&filer_pb.KeepConnectedRequest{
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Name: broker.option.Ip,
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GrpcPort: uint32(broker.option.Port),
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}); err != nil {
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glog.V(0).Infof("broker %s:%d failed to init at %s: %v", broker.option.Ip, broker.option.Port, filer, err)
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return err
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}
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// TODO send events of adding/removing topics
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glog.V(0).Infof("conntected with filer: %v", filer)
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for {
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if err := stream.Send(&filer_pb.KeepConnectedRequest{
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Name: broker.option.Ip,
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GrpcPort: uint32(broker.option.Port),
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}); err != nil {
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glog.V(0).Infof("%s:%d failed to sendto %s: %v", broker.option.Ip, broker.option.Port, filer, err)
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return err
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}
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// println("send heartbeat")
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if _, err := stream.Recv(); err != nil {
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glog.V(0).Infof("%s:%d failed to receive from %s: %v", broker.option.Ip, broker.option.Port, filer, err)
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return err
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}
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// println("received reply")
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time.Sleep(11 * time.Second)
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// println("woke up")
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}
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return nil
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})
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time.Sleep(3 * time.Second)
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}
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}
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}
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func (broker *MessageBroker) withFilerClient(filer string, fn func(filer_pb.SeaweedFilerClient) error) error {
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return pb.WithFilerClient(filer, broker.grpcDialOption, fn)
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}
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func (broker *MessageBroker) withMasterClient(master string, fn func(client master_pb.SeaweedClient) error) error {
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return pb.WithMasterClient(master, broker.grpcDialOption, 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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