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package protocol
import (
"github.com/seaweedfs/seaweedfs/weed/mq/kafka/consumer_offset"
)
// offsetStorageAdapter adapts consumer_offset.OffsetStorage to ConsumerOffsetStorage interface
type offsetStorageAdapter struct {
storage consumer_offset.OffsetStorage
}
// newOffsetStorageAdapter creates a new adapter
func newOffsetStorageAdapter(storage consumer_offset.OffsetStorage) ConsumerOffsetStorage {
return &offsetStorageAdapter{storage: storage}
}
func (a *offsetStorageAdapter) CommitOffset(group, topic string, partition int32, offset int64, metadata string) error {
return a.storage.CommitOffset(group, topic, partition, offset, metadata)
}
func (a *offsetStorageAdapter) FetchOffset(group, topic string, partition int32) (int64, string, error) {
return a.storage.FetchOffset(group, topic, partition)
}
func (a *offsetStorageAdapter) FetchAllOffsets(group string) (map[TopicPartition]OffsetMetadata, error) {
offsets, err := a.storage.FetchAllOffsets(group)
if err != nil {
return nil, err
}
// Convert from consumer_offset types to protocol types
result := make(map[TopicPartition]OffsetMetadata, len(offsets))
for tp, om := range offsets {
result[TopicPartition{Topic: tp.Topic, Partition: tp.Partition}] = OffsetMetadata{
Offset: om.Offset,
Metadata: om.Metadata,
}
}
return result, nil
}
func (a *offsetStorageAdapter) DeleteGroup(group string) error {
return a.storage.DeleteGroup(group)
}
func (a *offsetStorageAdapter) Close() error {
return a.storage.Close()
}
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