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package broker
import (
"fmt"
"github.com/seaweedfs/seaweedfs/weed/mq/pub_balancer"
"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
// PublisherToPubBalancer receives connections from brokers and collects stats
func (b *MessageQueueBroker) PublisherToPubBalancer(stream mq_pb.SeaweedMessaging_PublisherToPubBalancerServer) error {
if !b.isLockOwner() {
return status.Errorf(codes.Unavailable, "not current broker balancer")
}
req, err := stream.Recv()
if err != nil {
return fmt.Errorf("receive init message: %w", err)
}
// process init message
initMessage := req.GetInit()
var brokerStats *pub_balancer.BrokerStats
if initMessage != nil {
brokerStats = b.PubBalancer.AddBroker(initMessage.Broker)
} else {
return status.Errorf(codes.InvalidArgument, "balancer init message is empty")
}
defer func() {
b.PubBalancer.RemoveBroker(initMessage.Broker, brokerStats)
}()
// process stats message
for {
req, err := stream.Recv()
if err != nil {
return fmt.Errorf("receive stats message from %s: %v", initMessage.Broker, err)
}
if !b.isLockOwner() {
return status.Errorf(codes.Unavailable, "not current broker balancer")
}
if receivedStats := req.GetStats(); receivedStats != nil {
b.PubBalancer.OnBrokerStatsUpdated(initMessage.Broker, brokerStats, receivedStats)
// glog.V(4).Infof("received from %v: %+v", initMessage.Broker, receivedStats)
}
}
return nil
}
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