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package sub_client
import (
"context"
"sync"
"github.com/seaweedfs/seaweedfs/weed/mq/topic"
"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
"github.com/seaweedfs/seaweedfs/weed/pb/schema_pb"
"google.golang.org/grpc"
)
type SubscriberConfiguration struct {
ClientId string
ConsumerGroup string
ConsumerGroupInstanceId string
GrpcDialOption grpc.DialOption
MaxPartitionCount int32 // how many partitions to process concurrently
SlidingWindowSize int32 // how many messages to process concurrently per partition
}
func (s *SubscriberConfiguration) String() string {
return "ClientId: " + s.ClientId + ", ConsumerGroup: " + s.ConsumerGroup + ", ConsumerGroupInstanceId: " + s.ConsumerGroupInstanceId
}
type ContentConfiguration struct {
Topic topic.Topic
Filter string
PartitionOffsets []*schema_pb.PartitionOffset
OffsetType schema_pb.OffsetType
OffsetTsNs int64
}
type OnDataMessageFn func(m *mq_pb.SubscribeMessageResponse_Data)
type OnCompletionFunc func()
type TopicSubscriber struct {
ctx context.Context
SubscriberConfig *SubscriberConfiguration
ContentConfig *ContentConfiguration
brokerPartitionAssignmentChan chan *mq_pb.SubscriberToSubCoordinatorResponse
brokerPartitionAssignmentAckChan chan *mq_pb.SubscriberToSubCoordinatorRequest
OnDataMessageFunc OnDataMessageFn
OnCompletionFunc OnCompletionFunc
bootstrapBrokers []string
activeProcessors map[topic.Partition]*ProcessorState
activeProcessorsLock sync.Mutex
PartitionOffsetChan chan KeyedTimestamp
}
func NewTopicSubscriber(ctx context.Context, bootstrapBrokers []string, subscriber *SubscriberConfiguration, content *ContentConfiguration, partitionOffsetChan chan KeyedTimestamp) *TopicSubscriber {
return &TopicSubscriber{
ctx: ctx,
SubscriberConfig: subscriber,
ContentConfig: content,
brokerPartitionAssignmentChan: make(chan *mq_pb.SubscriberToSubCoordinatorResponse, 1024),
brokerPartitionAssignmentAckChan: make(chan *mq_pb.SubscriberToSubCoordinatorRequest, 1024),
bootstrapBrokers: bootstrapBrokers,
activeProcessors: make(map[topic.Partition]*ProcessorState),
PartitionOffsetChan: partitionOffsetChan,
}
}
func (sub *TopicSubscriber) SetOnDataMessageFn(fn OnDataMessageFn) {
sub.OnDataMessageFunc = fn
}
func (sub *TopicSubscriber) SetCompletionFunc(onCompletionFn OnCompletionFunc) {
sub.OnCompletionFunc = onCompletionFn
}
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