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package sub_client
import (
"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
"google.golang.org/grpc"
"time"
)
type SubscriberConfiguration struct {
ClientId string
GroupId string
GroupInstanceId string
GroupMinimumPeers int32
GroupMaximumPeers int32
BootstrapServers []string
GrpcDialOption grpc.DialOption
}
type ContentConfiguration struct {
Namespace string
Topic string
Filter string
StartTime time.Time
}
type OnEachMessageFunc func(key, value []byte) (shouldContinue bool)
type OnCompletionFunc func()
type TopicSubscriber struct {
SubscriberConfig *SubscriberConfiguration
ContentConfig *ContentConfiguration
brokerPartitionAssignments []*mq_pb.BrokerPartitionAssignment
OnEachMessageFunc OnEachMessageFunc
OnCompletionFunc OnCompletionFunc
bootstrapBrokers []string
waitForMoreMessage bool
alreadyProcessedTsNs int64
}
func NewTopicSubscriber(bootstrapBrokers []string, subscriber *SubscriberConfiguration, content *ContentConfiguration) *TopicSubscriber {
return &TopicSubscriber{
SubscriberConfig: subscriber,
ContentConfig: content,
bootstrapBrokers: bootstrapBrokers,
waitForMoreMessage: true,
alreadyProcessedTsNs: content.StartTime.UnixNano(),
}
}
func (sub *TopicSubscriber) SetEachMessageFunc(onEachMessageFn OnEachMessageFunc) {
sub.OnEachMessageFunc = onEachMessageFn
}
func (sub *TopicSubscriber) SetCompletionFunc(onCompletionFn OnCompletionFunc) {
sub.OnCompletionFunc = onCompletionFn
}