feat: read,write data with buffered

v0.0.3 beta

internal/cmd/run.go

@@ -3,9 +3,7 @@ package cmd
 import (
 	"context"
 	"encoding/json"
-	"errors"
 	"fmt"
-	"io"
 	"net/url"
 	"os"
 
@@ -28,6 +26,10 @@ func run(cmd *cobra.Command, args []string) error {
 		logrus.SetLevel(logrus.DebugLevel)
 	}
 
+	if f_limit == 0 || f_limit > 10000 {
+		return fmt.Errorf("invalid limit(1 - 10000)")
+	}
+
 	switch f_type {
 	case "data", "mapping", "setting":
 	default:
@@ -84,33 +86,73 @@ func run(cmd *cobra.Command, args []string) error {
 func executeData(ctx context.Context, input, output interfaces.DumpIO) error {
 	var (
 		err   error
-		lines   []*interfaces.ESSource
+		ch    = make(chan []*interfaces.ESSource, 1)
-		succeed int
+		errCh = make(chan error)
 	)
 
+	// write goroutine
+	go func(c context.Context) {
+		var (
+			lines []*interfaces.ESSource
+		)
+
+		defer func() {
+			close(ch)
+		}()
+
 		for {
-
+			select {
-		if lines, err = input.ReadData(ctx, f_limit); err != nil {
+			case <-c.Done():
-			if errors.Is(err, io.EOF) {
+				return
-				return nil
+			default:
-			}
+				if lines, err = input.ReadData(c, f_limit); err != nil {
-
+					errCh <- err
-			return err
+					return
 				}
 
 				if len(lines) == 0 {
-			return nil
+					ch <- lines
+					return
 				}
 
-		if succeed, err = output.WriteData(ctx, lines); err != nil {
+				ch <- lines
+			}
+		}
+	}(ctx)
+
+	var (
+		succeed int
+		total   int
+		docs    []*interfaces.ESSource
+		ok      bool
+	)
+
+	for {
+		select {
+		case <-ctx.Done():
+		case err = <-errCh:
+			return err
+		case docs, ok = <-ch:
+			if !ok {
 				return err
 			}
 
-		if succeed != len(lines) {
+			if len(docs) == 0 {
-			return fmt.Errorf("cmd.run: got lines=%d, only succeed=%d", len(lines), succeed)
+				return nil
 			}
 
-		logrus.Infof("Dump: %d docs succeed!!!", succeed)
+			if succeed, err = output.WriteData(ctx, docs); err != nil {
+				return err
+			}
+
+			if succeed != len(docs) {
+				return fmt.Errorf("cmd.run: got lines=%d, only succeed=%d", len(docs), succeed)
+			}
+
+			total += succeed
+
+			logrus.Infof("Dump: succeed=%d total=%d docs succeed!!!", succeed, total)
+		}
 	}
 }
 

internal/xes/xes.go

@@ -111,6 +111,7 @@ func (c *client) WriteData(ctx context.Context, docs []*interfaces.ESSource) (in
 		err     error
 		indexer esutil.BulkIndexer
 		count   int
+		be      error
 	)
 	if indexer, err = esutil.NewBulkIndexer(esutil.BulkIndexerConfig{
 		Client:  c.c,
@@ -134,6 +135,9 @@ func (c *client) WriteData(ctx context.Context, docs []*interfaces.ESSource) (in
 			Index:      c.index,
 			DocumentID: doc.DocId,
 			Body:       bytes.NewReader(bs),
+			OnFailure: func(ctx context.Context, item esutil.BulkIndexerItem, item2 esutil.BulkIndexerResponseItem, bulkErr error) {
+				be = bulkErr
+			},
 		}); err != nil {
 			return 0, err
 		}
@@ -144,9 +148,13 @@ func (c *client) WriteData(ctx context.Context, docs []*interfaces.ESSource) (in
 		return 0, err
 	}
 
+	if be != nil {
+		return 0, be
+	}
+
 	stats := indexer.Stats()
 	if stats.NumFailed > 0 {
-		return count, fmt.Errorf("write to xes failed=%d", stats.NumFailed)
+		return count, fmt.Errorf("write to xes failed_count=%d bulk_count=%d", stats.NumFailed, count)
 	}
 
 	return count, nil