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106 lines
3.4 KiB
106 lines
3.4 KiB
package topic
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import (
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"fmt"
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"sync/atomic"
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"time"
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"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
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"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
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"github.com/seaweedfs/seaweedfs/weed/util"
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)
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// OffsetAssignmentFunc is a function type for assigning offsets to messages
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type OffsetAssignmentFunc func() (int64, error)
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// PublishWithOffset publishes a message with offset assignment
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// This method is used by the Kafka gateway integration for sequential offset assignment
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func (p *LocalPartition) PublishWithOffset(message *mq_pb.DataMessage, assignOffsetFn OffsetAssignmentFunc) (int64, error) {
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// Assign offset for this message
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offset, err := assignOffsetFn()
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if err != nil {
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return 0, fmt.Errorf("failed to assign offset: %w", err)
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}
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// Add message to buffer with offset
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err = p.addToBufferWithOffset(message, offset)
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if err != nil {
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return 0, fmt.Errorf("failed to add message to buffer: %w", err)
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}
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// Send to follower if needed (same logic as original Publish)
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if p.publishFolloweMeStream != nil {
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if followErr := p.publishFolloweMeStream.Send(&mq_pb.PublishFollowMeRequest{
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Message: &mq_pb.PublishFollowMeRequest_Data{
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Data: message,
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},
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}); followErr != nil {
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return 0, fmt.Errorf("send to follower %s: %v", p.Follower, followErr)
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}
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} else {
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atomic.StoreInt64(&p.AckTsNs, message.TsNs)
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}
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return offset, nil
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}
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// addToBufferWithOffset adds a message to the log buffer with a pre-assigned offset
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func (p *LocalPartition) addToBufferWithOffset(message *mq_pb.DataMessage, offset int64) error {
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// Ensure we have a timestamp
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processingTsNs := message.TsNs
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if processingTsNs == 0 {
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processingTsNs = time.Now().UnixNano()
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}
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// Build a LogEntry that preserves the assigned sequential offset
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logEntry := &filer_pb.LogEntry{
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TsNs: processingTsNs,
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PartitionKeyHash: util.HashToInt32(message.Key),
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Data: message.Value,
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Key: message.Key,
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Offset: offset,
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}
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// Add the entry to the buffer in a way that preserves offset on disk and in-memory
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p.LogBuffer.AddLogEntryToBuffer(logEntry)
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return nil
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}
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// GetOffsetInfo returns offset information for this partition
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// Used for debugging and monitoring partition offset state
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func (p *LocalPartition) GetOffsetInfo() map[string]interface{} {
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return map[string]interface{}{
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"partition_ring_size": p.RingSize,
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"partition_range_start": p.RangeStart,
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"partition_range_stop": p.RangeStop,
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"partition_unix_time": p.UnixTimeNs,
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"buffer_name": p.LogBuffer.GetName(),
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"buffer_offset": p.LogBuffer.GetOffset(),
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}
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}
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// OffsetAwarePublisher wraps a LocalPartition with offset assignment capability
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type OffsetAwarePublisher struct {
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partition *LocalPartition
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assignOffsetFn OffsetAssignmentFunc
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}
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// NewOffsetAwarePublisher creates a new offset-aware publisher
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func NewOffsetAwarePublisher(partition *LocalPartition, assignOffsetFn OffsetAssignmentFunc) *OffsetAwarePublisher {
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return &OffsetAwarePublisher{
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partition: partition,
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assignOffsetFn: assignOffsetFn,
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}
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}
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// Publish publishes a message with automatic offset assignment
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func (oap *OffsetAwarePublisher) Publish(message *mq_pb.DataMessage) error {
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_, err := oap.partition.PublishWithOffset(message, oap.assignOffsetFn)
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return err
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}
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// GetPartition returns the underlying partition
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func (oap *OffsetAwarePublisher) GetPartition() *LocalPartition {
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return oap.partition
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}
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