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Original file line number | Diff line number | Diff line change |
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package connkafka | ||
|
||
import ( | ||
"context" | ||
"fmt" | ||
"sync/atomic" | ||
"time" | ||
|
||
"github.com/twmb/franz-go/pkg/kgo" | ||
lua "github.com/yuin/gopher-lua" | ||
|
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"github.com/PeerDB-io/peer-flow/generated/protos" | ||
"github.com/PeerDB-io/peer-flow/model" | ||
"github.com/PeerDB-io/peer-flow/pua" | ||
) | ||
|
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func (*KafkaConnector) SetupQRepMetadataTables(_ context.Context, _ *protos.QRepConfig) error { | ||
return nil | ||
} | ||
|
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func (c *KafkaConnector) SyncQRepRecords( | ||
ctx context.Context, | ||
config *protos.QRepConfig, | ||
partition *protos.QRepPartition, | ||
stream *model.QRecordStream, | ||
) (int, error) { | ||
startTime := time.Now() | ||
numRecords := atomic.Int64{} | ||
schema := stream.Schema() | ||
|
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queueCtx, queueErr := context.WithCancelCause(ctx) | ||
pool, err := c.createPool(queueCtx, config.Script, config.FlowJobName, queueErr) | ||
if err != nil { | ||
return 0, err | ||
} | ||
defer pool.Close() | ||
|
||
Loop: | ||
for { | ||
select { | ||
case qrecord, ok := <-stream.Records: | ||
if !ok { | ||
c.logger.Info("flushing batches because no more records") | ||
break Loop | ||
} | ||
|
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pool.Run(func(ls *lua.LState) []*kgo.Record { | ||
items := model.NewRecordItems(len(qrecord)) | ||
for i, val := range qrecord { | ||
items.AddColumn(schema.Fields[i].Name, val) | ||
} | ||
record := &model.InsertRecord[model.RecordItems]{ | ||
BaseRecord: model.BaseRecord{}, | ||
Items: items, | ||
SourceTableName: config.WatermarkTable, | ||
DestinationTableName: config.DestinationTableIdentifier, | ||
CommitID: 0, | ||
} | ||
|
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lfn := ls.Env.RawGetString("onRecord") | ||
fn, ok := lfn.(*lua.LFunction) | ||
if !ok { | ||
queueErr(fmt.Errorf("script should define `onRecord` as function, not %s", lfn)) | ||
return nil | ||
} | ||
|
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ls.Push(fn) | ||
ls.Push(pua.LuaRecord.New(ls, record)) | ||
err := ls.PCall(1, -1, nil) | ||
if err != nil { | ||
queueErr(fmt.Errorf("script failed: %w", err)) | ||
return nil | ||
} | ||
|
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args := ls.GetTop() | ||
results := make([]*kgo.Record, 0, args) | ||
for i := range args { | ||
kr, err := lvalueToKafkaRecord(ls, ls.Get(i-args)) | ||
if err != nil { | ||
queueErr(err) | ||
return nil | ||
} | ||
if kr != nil { | ||
if kr.Topic == "" { | ||
kr.Topic = record.GetDestinationTableName() | ||
} | ||
results = append(results, kr) | ||
} | ||
} | ||
ls.SetTop(0) | ||
numRecords.Add(1) | ||
return results | ||
}) | ||
|
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case <-queueCtx.Done(): | ||
break Loop | ||
} | ||
} | ||
|
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if err := pool.Wait(queueCtx); err != nil { | ||
return 0, err | ||
} | ||
if err := c.client.Flush(queueCtx); err != nil { | ||
return 0, fmt.Errorf("[kafka] final flush error: %w", err) | ||
} | ||
|
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if err := c.FinishQRepPartition(ctx, partition, config.FlowJobName, startTime); err != nil { | ||
return 0, err | ||
} | ||
return int(numRecords.Load()), nil | ||
} |
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