wip: fix size = 0 error

internal/cmd/cmd.go

@@ -2,7 +2,6 @@ package cmd
 
 import (
 	"context"
-	"github.com/loveuer/esgo2dump/log"
 
 	"github.com/loveuer/esgo2dump/internal/opt"
 	"github.com/spf13/cobra"
@@ -49,7 +48,7 @@ esgo2dump --input=http://127.0.0.1:9200/some_index --output=./data.json --query_
 )
 
 func init() {
-	rootCommand.PersistentFlags().BoolVar(&opt.Debug, "debug", false, "")
+	rootCommand.Flags().BoolVar(&opt.Debug, "debug", false, "")
 	rootCommand.Flags().BoolVarP(&f_version, "version", "v", false, "print esgo2dump version")
 	rootCommand.Flags().IntVar(&opt.Timeout, "timeout", 30, "max timeout seconds per operation with limit")
 
@@ -63,12 +62,6 @@ func init() {
 	rootCommand.Flags().StringVarP(&f_query, "query", "q", "", `query dsl, example: {"bool":{"must":[{"term":{"name":{"value":"some_name"}}}],"must_not":[{"range":{"age":{"gte":18,"lt":60}}}]}}`)
 	rootCommand.Flags().StringVar(&f_query_file, "query_file", "", `query json file (will execute line by line)`)
 	rootCommand.Flags().Uint64VarP(&f_limit, "limit", "l", 100, "")
-
-	rootCommand.PersistentPreRun = func(cmd *cobra.Command, args []string) {
-		if opt.Debug {
-			log.SetLogLevel(log.LogLevelDebug)
-		}
-	}
 }
 
 func Start(ctx context.Context) error {

internal/cmd/run.go

@@ -6,13 +6,14 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"github.com/loveuer/esgo2dump/log"
-	"github.com/loveuer/esgo2dump/model"
 	"net/url"
 	"os"
 	"strings"
 	"sync"
 
+	"github.com/loveuer/esgo2dump/log"
+	"github.com/loveuer/esgo2dump/model"
+
 	"github.com/loveuer/esgo2dump/internal/interfaces"
 	"github.com/loveuer/esgo2dump/internal/opt"
 	"github.com/loveuer/esgo2dump/internal/xes"
@@ -51,6 +52,10 @@ func run(cmd *cobra.Command, args []string) error {
 		ioo interfaces.DumpIO
 	)
 
+	if opt.Debug {
+		log.SetLogLevel(log.LogLevelDebug)
+	}
+
 	if f_version {
 		fmt.Printf("esgo2dump (Version: %s)\n", opt.Version)
 		os.Exit(0)
@@ -144,9 +149,7 @@ func executeData(ctx context.Context, input, output interfaces.DumpIO) error {
 	}
 
 	if f_query_file != "" {
-		var (
-			qf *os.File
-		)
+		var qf *os.File
 
 		if qf, err = os.Open(f_query_file); err != nil {
 			return fmt.Errorf("open query_file err=%v", err)
@@ -204,10 +207,10 @@ func executeData(ctx context.Context, input, output interfaces.DumpIO) error {
 	log.Info("Query: got queries=%d", len(queries))
 
 Loop:
-	for qi, query := range queries {
+	for queryIdx, query := range queries {
 		bs, _ := json.Marshal(query)
 
-		log.Debug("Query[%d]: %s", qi, string(bs))
+		log.Debug("Query[%d]: %s", queryIdx, string(bs))
 
 		dch, ech = input.ReadData(ctx, f_limit, query, sources, []string{f_sort})
 
@@ -290,7 +293,7 @@ ClientByFile:
 		}
 	}
 
-	if file, err = os.OpenFile(source, os.O_CREATE|os.O_RDWR, 0644); err != nil {
+	if file, err = os.OpenFile(source, os.O_CREATE|os.O_RDWR, 0o644); err != nil {
 		return nil, err
 	}
 

internal/opt/var.go

@@ -2,6 +2,7 @@ package opt
 
 const (
 	ScrollDurationSeconds = 10 * 60
+	DefaultSize           = 100
 )
 
 var (

internal/util/min.go

@@ -7,15 +7,3 @@ func Min[T ~string | ~int | ~int64 | ~uint64 | ~float64 | ~float32 | ~int32 | ~u
 
 	return b
 }
-
-func AbsMin(a, b uint64) uint64 {
-	if a == 0 {
-		return b
-	}
-
-	if b == 0 {
-		return a
-	}
-
-	return Min(a, b)
-}

xes/es7/client.go

@@ -7,9 +7,11 @@ import (
 	elastic "github.com/elastic/go-elasticsearch/v7"
 	"github.com/elastic/go-elasticsearch/v7/esapi"
 	"github.com/loveuer/esgo2dump/internal/util"
+	"github.com/samber/lo"
 	"net"
 	"net/http"
 	"net/url"
+	"strings"
 	"time"
 )
 
@@ -21,7 +23,12 @@ func NewClient(ctx context.Context, url *url.URL) (*elastic.Client, error) {
 		client      *elastic.Client
 		errCh       = make(chan error)
 		cliCh       = make(chan *elastic.Client)
-		address     = fmt.Sprintf("%s://%s", url.Scheme, url.Host)
+		endpoints   = lo.Map(
+			strings.Split(url.Host, ","),
+			func(item string, index int) string {
+				return fmt.Sprintf("%s://%s", url.Scheme, item)
+			},
+		)
 	)
 
 	if url.User != nil {
@@ -71,12 +78,12 @@ func NewClient(ctx context.Context, url *url.URL) (*elastic.Client, error) {
 		cliCh <- cli
 	}
 
-	go ncFunc([]string{address}, urlUsername, urlPassword)
+	go ncFunc(endpoints, urlUsername, urlPassword)
 	timeout := util.TimeoutCtx(ctx, 10)
 
 	select {
 	case <-timeout.Done():
-		return nil, fmt.Errorf("dial es=%s err=%v", address, context.DeadlineExceeded)
+		return nil, fmt.Errorf("dial es=%v err=%v", endpoints, context.DeadlineExceeded)
 	case client = <-cliCh:
 		return client, nil
 	case err = <-errCh:

xes/es7/client_test.go

@@ -0,0 +1,20 @@
+package es7
+
+import (
+	"github.com/loveuer/esgo2dump/internal/util"
+	"net/url"
+	"testing"
+)
+
+func TestNewClient(t *testing.T) {
+	uri := "http://es1.dev:9200,es2.dev:9200"
+	ins, _ := url.Parse(uri)
+
+	c, err := NewClient(util.Timeout(5), ins)
+	if err != nil {
+		t.Fatal(err.Error())
+	}
+
+	t.Log("success!!!")
+	_ = c
+}

xes/es7/read.go

@@ -5,13 +5,14 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"time"
+
 	elastic "github.com/elastic/go-elasticsearch/v7"
 	"github.com/elastic/go-elasticsearch/v7/esapi"
 	"github.com/loveuer/esgo2dump/internal/util"
 	"github.com/loveuer/esgo2dump/log"
 	"github.com/loveuer/esgo2dump/model"
 	"github.com/samber/lo"
-	"time"
 )
 
 // ReadData
@@ -42,9 +43,7 @@ func ReadData(ctx context.Context, client *elastic.Client, index string, size, m
 					"scroll_id": scrollId,
 				})
 
-				var (
-					rr *esapi.Response
-				)
+				var rr *esapi.Response
 
 				if rr, err = client.ClearScroll(
 					client.ClearScroll.WithContext(util.Timeout(3)),
@@ -184,7 +183,7 @@ func ReadDataV2(
 			sort = []string{}
 		}
 
-		if query != nil && len(query) > 0 {
+		if len(query) > 0 {
 			body["query"] = query
 		}
 
@@ -199,14 +198,12 @@ func ReadDataV2(
 			close(errCh)
 		}()
 
-		fina_size := util.AbsMin(size, max-total)
-		log.Debug("es7.read: size = %d, max = %d, total = %d, fina size = %d", size, max, total, fina_size)
-
 		for {
+			ws := int(util.Min(size, max-total))
 			qs = []func(*esapi.SearchRequest){
 				client.Search.WithContext(util.TimeoutCtx(ctx, 30)),
 				client.Search.WithIndex(index),
-				client.Search.WithSize(int(fina_size)),
+				client.Search.WithSize(ws),
 				client.Search.WithSort(sorts...),
 			}
 
@@ -224,7 +221,7 @@ func ReadDataV2(
 				return
 			}
 
-			log.Debug("body raw: %s", string(bs))
+			log.Debug("es7.ReadDataV2: search request size = %d, body = %s", ws, string(bs))
 
 			qs = append(qs, client.Search.WithBody(bytes.NewReader(bs)))
 			if resp, err = client.Search(qs...); err != nil {
@@ -237,7 +234,7 @@ func ReadDataV2(
 				return
 			}
 
-			var result = new(model.ESResponseV7)
+			result := new(model.ESResponseV7)
 			decoder := json.NewDecoder(resp.Body)
 			if err = decoder.Decode(result); err != nil {
 				errCh <- err
@@ -250,19 +247,16 @@ func ReadDataV2(
 			}
 
 			dataCh <- result.Hits.Hits
+			log.Debug("es7.ReadDataV2: search response hits = %d", len(result.Hits.Hits))
 			total += uint64(len(result.Hits.Hits))
 
-			log.Debug("es7.read: total: %d", total)
-
 			if uint64(len(result.Hits.Hits)) < size || (max > 0 && total >= max) {
 				break
 			}
 
 			searchAfter = result.Hits.Hits[len(result.Hits.Hits)-1].Sort
 		}
-
 	}()
 
 	return dataCh, errCh
-
 }