fix:调整导出数据拆分模式，按照时间进行分片

biz/db/db.go

@@ -7,7 +7,6 @@ import (
 	"fmt"
 	"gorm.io/driver/mysql"
 	"gorm.io/gorm"
-	"gorm.io/gorm/logger"
 	"runtime/trace"
 	"strconv"
 	"time"
@@ -23,13 +22,13 @@ func NewDb(str string) (*Db, error) {
 	db, err := gorm.Open(
 		mysql.Open(str+""),
 		&gorm.Config{
-			Logger: logger.Discard,
+			//Logger: logger.Discard,
 		},
 	)
 	if err != nil {
 		return nil, err
 	}
-	//db = db.Debug()
+	db = db.Debug()
 	return &Db{
 		db: db,
 	}, nil

biz/export/csv_exporter.go

@@ -11,7 +11,6 @@ type CsvExporter struct {
 	mFetcher DataFetcher
 	file     FileAdapter
 	count    int
-	last     interface{}
 
 	wg *sync.WaitGroup
 }
@@ -50,8 +49,8 @@ func (ee *CsvExporter) Export(sql, pk string) error {
 	if ee.count > 0 {
 		//异步导出数据到csv文件中
 		go ee.exportToCsv(data)
-		last := data.Data[ee.count-1]
-		ee.last = last[ee.getPkIndex(data.Title, pk)]
+	} else {
+		ee.wg.Done()
 	}
 	return nil
 }
@@ -73,8 +72,8 @@ func (ee *CsvExporter) exportToCsv(data *Data) {
 	}
 }
 
-func (ee *CsvExporter) Last() (int, interface{}) {
-	return ee.count, ee.last
+func (ee *CsvExporter) Count() int {
+	return ee.count
 }
 
 func (ee *CsvExporter) getPkIndex(titles []string, pk string) int {

biz/export/export.go

@@ -5,7 +5,7 @@ type (
 		Fetcher(fetcher DataFetcher)
 		File(file FileAdapter)
 		Export(sql, pk string) error
-		Last() (int, interface{})
+		Count() int
 	}
 
 	Data struct {

cmd/cmd/csv.go

@@ -37,7 +37,6 @@ func (e *Csv) Export(sysName, jobName string, begin, end time.Time, batch int) e
 	return e.JobHandler(job, d, map[string]interface{}{
 		"begin": begin,
 		"end":   end,
-		"last":  0,
 	}, batch)
 }
 
@@ -56,42 +55,55 @@ func (e *Csv) JobHandler(job config.Job, d export.DataFetcher, params map[string
 func (e *Csv) TaskExport(d export.DataFetcher, t config.Task, params map[string]interface{}, batch int, fileName string) error {
 	var i int
 	var wg sync.WaitGroup
-	for i = 0; i < 1000; i++ {
+	var total int
+
+	beginTime := params["begin"].(time.Time)
+	lastTime := params["end"].(time.Time)
+	over := false
+	for i = 0; i < 10000; i++ {
+		endTime := beginTime.Add(2 * time.Hour)
+		//结束时间大于最后时间
+		if endTime.After(lastTime) {
+			endTime = lastTime
+			over = true
+		}
 
 		f, err := e.getCsvFile(i)
 		if err != nil {
 			return err
 		}
-
+		params["begin"] = beginTime
+		params["end"] = endTime
 		sql := t.GetSql(params)
 
 		e := export.NewCsvExporter(d, f)
 		e.(*export.CsvExporter).WaitGroup(&wg)
 		wg.Add(1)
-		e.Export(sql+" limit "+strconv.Itoa(batch), t.PK)
+		e.Export(sql, t.PK)
 
-		count, last := e.Last()
+		count := e.Count()
 		fmt.Printf("已导出 %d 条数据\n", batch*i+count)
 
-		if count == 0 {
-			return nil
-		}
+		total = total + count
 
-		if count < batch {
+		if over {
+			if count == 0 {
+				i = i - 1
+			}
 			break
 		}
-
-		params["last"] = last
+		beginTime = endTime
 		time.Sleep(time.Microsecond * 30)
 	}
 	wg.Wait()
 	//fmt.Println("tempDir", e.dirTemp)
-	//todo 合并csv文件，并删除 临时目录
+	if total > 0 { //查询到数据
+		//合并csv文件，并删除 临时目录
 		if err := e.mergeCsvToExcel(e.dirTemp, i, fileName); err != nil {
 			log.Printf("合并csv文件异常：%s", err.Error())
 			return err
 		}
-
+	}
 	//重置临时路径
 	e.dirTemp = ""
 
@@ -126,5 +138,6 @@ func (e *Csv) mergeCsvToExcel(path string, max int, out string) error {
 		return err
 	}
 
-	return m.Clear()
+	return nil
+	//return m.Clear()
 }

cmd/cmd/export-all-job.go

@@ -44,6 +44,8 @@ func exportAllJobRun(cmd *cobra.Command, args []string) {
 		CmdError(cmd, "无效的参数：%s", err.Error())
 	}
 
+	allBegin := time.Now()
+
 	for _, job := range sys.Jobs {
 		log.Printf("执行【%s】【%s】导出\n", sName, job.Name)
 		b := time.Now()
@@ -53,4 +55,6 @@ func exportAllJobRun(cmd *cobra.Command, args []string) {
 		}
 		log.Println("导出耗时：" + time.Now().Sub(b).String())
 	}
+
+	log.Println("总耗时：" + time.Now().Sub(allBegin).String())
 }

cmd/cmd/export-all.go

@@ -35,6 +35,7 @@ func exportAllRun(cmd *cobra.Command, args []string) {
 	if err != nil {
 		CmdError(cmd, "无效的参数：%s", err.Error())
 	}
+	allBegin := time.Now()
 	for _, sys := range c.Systems {
 		for _, job := range sys.Jobs {
 			log.Printf("执行【%s】【%s】导出\n", sys.Name, job.Name)
@@ -46,5 +47,6 @@ func exportAllRun(cmd *cobra.Command, args []string) {
 			log.Println("导出耗时：" + time.Now().Sub(b).String())
 		}
 	}
+	log.Println("总耗时：" + time.Now().Sub(allBegin).String())
 
 }

cmd/cmd/merge_test.go

@@ -1,6 +1,8 @@
 package cmd
 
 import (
+	"github.com/stretchr/testify/assert"
+	"os"
 	"testing"
 )
 
@@ -17,5 +19,10 @@ func TestMerge_Write(t *testing.T) {
 }
 
 func TestMerge_Save(t *testing.T) {
-	//  m := NewMerge(os.TempDir()+"/3299772411",500000)
+	m := NewMerge(
+		Reader{Path: os.TempDir() + "/3299772411", Index: 102},
+		Writer{File: "sss.xlsx", Limit: 1000000},
+	)
+	err := m.Merge()
+	assert.NoError(t, err)
 }