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package sub_client
import (
"github.com/seaweedfs/seaweedfs/weed/mq/topic"
"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
"google.golang.org/grpc"
"sync"
"time"
)
type SubscriberConfiguration struct {
ClientId string
ConsumerGroup string
ConsumerGroupInstanceId string
GrpcDialOption grpc.DialOption
MaxPartitionCount int32 // how many partitions to process concurrently
PerPartitionConcurrency int32 // how many messages to process concurrently per partition
}
type ContentConfiguration struct {
Topic topic.Topic
Filter string
StartTime time.Time
}
type OnEachMessageFunc func(key, value []byte) (err error)
type OnCompletionFunc func()
type TopicSubscriber struct {
SubscriberConfig *SubscriberConfiguration
ContentConfig *ContentConfiguration
brokerPartitionAssignmentChan chan *mq_pb.SubscriberToSubCoordinatorResponse
brokerPartitionAssignmentAckChan chan *mq_pb.SubscriberToSubCoordinatorRequest
OnEachMessageFunc OnEachMessageFunc
OnCompletionFunc OnCompletionFunc
bootstrapBrokers []string
waitForMoreMessage bool
activeProcessors map[topic.Partition]*ProcessorState
activeProcessorsLock sync.Mutex
}
func NewTopicSubscriber(bootstrapBrokers []string, subscriber *SubscriberConfiguration, content *ContentConfiguration) *TopicSubscriber {
return &TopicSubscriber{
SubscriberConfig: subscriber,
ContentConfig: content,
brokerPartitionAssignmentChan: make(chan *mq_pb.SubscriberToSubCoordinatorResponse, 1024),
brokerPartitionAssignmentAckChan: make(chan *mq_pb.SubscriberToSubCoordinatorRequest, 1024),
bootstrapBrokers: bootstrapBrokers,
waitForMoreMessage: true,
activeProcessors: make(map[topic.Partition]*ProcessorState),
}
}
func (sub *TopicSubscriber) SetEachMessageFunc(onEachMessageFn OnEachMessageFunc) {
sub.OnEachMessageFunc = onEachMessageFn
}
func (sub *TopicSubscriber) SetCompletionFunc(onCompletionFn OnCompletionFunc) {
sub.OnCompletionFunc = onCompletionFn
}
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