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package pub_balancer
import (
"context"
"fmt"
"github.com/seaweedfs/seaweedfs/weed/pb"
"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
"google.golang.org/grpc"
)
// PubBalancer <= PublisherToPubBalancer() <= Broker <=> Publish()
// ExecuteBalanceActionMove from PubBalancer => AssignTopicPartitions() => Broker => Publish()
func (balancer *PubBalancer) ExecuteBalanceActionMove(move *BalanceActionMove, grpcDialOption grpc.DialOption) error {
if _, found := balancer.Brokers.Get(move.SourceBroker); !found {
return fmt.Errorf("source broker %s not found", move.SourceBroker)
}
if _, found := balancer.Brokers.Get(move.TargetBroker); !found {
return fmt.Errorf("target broker %s not found", move.TargetBroker)
}
err := pb.WithBrokerGrpcClient(false, move.TargetBroker, grpcDialOption, func(client mq_pb.SeaweedMessagingClient) error {
_, err := client.AssignTopicPartitions(context.Background(), &mq_pb.AssignTopicPartitionsRequest{
Topic: move.TopicPartition.Topic.ToPbTopic(),
BrokerPartitionAssignments: []*mq_pb.BrokerPartitionAssignment{
{
Partition: move.TopicPartition.ToPbPartition(),
},
},
IsLeader: true,
IsDraining: false,
})
return err
})
if err != nil {
return fmt.Errorf("assign topic partition %v to %s: %v", move.TopicPartition, move.TargetBroker, err)
}
err = pb.WithBrokerGrpcClient(false, move.SourceBroker, grpcDialOption, func(client mq_pb.SeaweedMessagingClient) error {
_, err := client.AssignTopicPartitions(context.Background(), &mq_pb.AssignTopicPartitionsRequest{
Topic: move.TopicPartition.Topic.ToPbTopic(),
BrokerPartitionAssignments: []*mq_pb.BrokerPartitionAssignment{
{
Partition: move.TopicPartition.ToPbPartition(),
},
},
IsLeader: true,
IsDraining: true,
})
return err
})
if err != nil {
return fmt.Errorf("assign topic partition %v to %s: %v", move.TopicPartition, move.SourceBroker, err)
}
return nil
}
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