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