blob: 9adc5197efd9e859f5095907a886b426c50dceb6 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
package sub_client
import (
"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
"google.golang.org/grpc"
"time"
)
type SubscriberConfiguration struct {
ClientId string
ConsumerGroup string
ConsumerGroupInstanceId string
GroupMinimumPeers int32
GroupMaximumPeers int32
BootstrapServers []string
GrpcDialOption grpc.DialOption
}
type ContentConfiguration struct {
Namespace string
Topic string
Filter string
StartTime time.Time
}
type ProcessorConfiguration struct {
ConcurrentPartitionLimit int // how many partitions to process concurrently
}
type OnEachMessageFunc func(key, value []byte) (shouldContinue bool, err error)
type OnCompletionFunc func()
type TopicSubscriber struct {
SubscriberConfig *SubscriberConfiguration
ContentConfig *ContentConfiguration
ProcessorConfig *ProcessorConfiguration
brokerPartitionAssignments []*mq_pb.BrokerPartitionAssignment
OnEachMessageFunc OnEachMessageFunc
OnCompletionFunc OnCompletionFunc
bootstrapBrokers []string
waitForMoreMessage bool
alreadyProcessedTsNs int64
}
func NewTopicSubscriber(bootstrapBrokers []string, subscriber *SubscriberConfiguration, content *ContentConfiguration, processor ProcessorConfiguration) *TopicSubscriber {
return &TopicSubscriber{
SubscriberConfig: subscriber,
ContentConfig: content,
ProcessorConfig: &processor,
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
}
|
