Golang Index.Batch方法代碼示例

func batchIndexingWorker(index bleve.Index, workChan chan *Work, start time.Time) {
	for {
		select {
		case work, ok := <-workChan:
			if !ok {
				return
			}
			workSize := 1
			if work.batch != nil {
				err := index.Batch(work.batch)
				if err != nil {
					log.Fatalf("indexer worker fatal: %v", err)
				}
				workSize = work.batch.Size()
			} else {
				err := index.Index(work.id, work.doc)
				if err != nil {
					log.Fatalf("indexer worker fatal: %v", err)
				}
			}
			elapsedTime := time.Since(start) / time.Millisecond
			updatedTotal := atomic.AddUint64(&totalIndexed, uint64(workSize))
			atomic.AddUint64(&totalPlainTextIndexed, work.plainTextBytes)
			if updatedTotal%uint64(*printCount) == 0 {
				log.Printf("%d,%d", updatedTotal, elapsedTime)
			}
		}
	}
}

func indexSite(index bleve.Index, maxBatchSize int) error {
	startT := time.Now()
	count := 0
	batch := index.NewBatch()
	batchSize := 10
	log.Printf("Walking %s", path.Join(htdocs, "repositories"))
	err := filepath.Walk(path.Join(htdocs, "repositories"), func(p string, f os.FileInfo, err error) error {
		if strings.Contains(p, "/accessions/") == true && strings.HasSuffix(p, ".json") == true {
			src, err := ioutil.ReadFile(p)
			if err != nil {
				log.Printf("Can't read %s, %s", p, err)
				return nil
			}
			view := new(cait.NormalizedAccessionView)
			err = json.Unmarshal(src, &view)
			if err != nil {
				log.Printf("Can't parse %s, %s", p, err)
				return nil
			}
			// Trim the htdocs and trailing .json extension
			//log.Printf("Queued %s", p)
			err = batch.Index(strings.TrimSuffix(strings.TrimPrefix(p, htdocs), "json"), view)
			if err != nil {
				log.Printf("Indexing error %s, %s", p, err)
				return nil
			}
			if batch.Size() >= batchSize {
				log.Printf("Indexing %d items", batch.Size())
				err := index.Batch(batch)
				if err != nil {
					log.Fatal(err)
				}
				count += batch.Size()
				batch = index.NewBatch()
				log.Printf("Indexed: %d items, batch size %d, running %s\n", count, batchSize, time.Now().Sub(startT))
				if batchSize < maxBatchSize {
					batchSize = batchSize * 2
				}
				if batchSize > maxBatchSize {
					batchSize = maxBatchSize
				}
			}
		}
		return nil
	})
	if batch.Size() > 0 {
		log.Printf("Indexing %d items", batch.Size())
		err := index.Batch(batch)
		if err != nil {
			log.Fatal(err)
		}
		count += batch.Size()
		log.Printf("Indexed: %d items, batch size %d, running %s\n", count, batchSize, time.Now().Sub(startT))
	}
	log.Printf("Total indexed: %d times, total run time %s\n", count, time.Now().Sub(startT))
	return err
}

func indexBeer(i bleve.Index) error {

	// open the directory
	dirEntries, err := ioutil.ReadDir(*jsonDir)
	if err != nil {
		return err
	}

	// walk the directory entries for indexing
	log.Printf("Indexing...")
	count := 0
	startTime := time.Now()
	batch := i.NewBatch()
	batchCount := 0
	for _, dirEntry := range dirEntries {
		filename := dirEntry.Name()
		// read the bytes
		jsonBytes, err := ioutil.ReadFile(*jsonDir + "/" + filename)
		if err != nil {
			return err
		}
		// // shred them into a document
		ext := filepath.Ext(filename)
		docId := filename[:(len(filename) - len(ext))]
		batch.Index(docId, jsonBytes)
		batchCount++

		if batchCount >= *batchSize {
			err = i.Batch(batch)
			if err != nil {
				return err
			}
			batch = i.NewBatch()
			batchCount = 0
		}
		count++
		if count%1000 == 0 {
			indexDuration := time.Since(startTime)
			indexDurationSeconds := float64(indexDuration) / float64(time.Second)
			timePerDoc := float64(indexDuration) / float64(count)
			log.Printf("Indexed %d documents, in %.2fs (average %.2fms/doc)", count, indexDurationSeconds, timePerDoc/float64(time.Millisecond))
		}
	}
	// flush the last batch
	if batchCount > 0 {
		err = i.Batch(batch)
		if err != nil {
			log.Fatal(err)
		}
	}
	indexDuration := time.Since(startTime)
	indexDurationSeconds := float64(indexDuration) / float64(time.Second)
	timePerDoc := float64(indexDuration) / float64(count)
	log.Printf("Indexed %d documents, in %.2fs (average %.2fms/doc)", count, indexDurationSeconds, timePerDoc/float64(time.Millisecond))
	return nil
}

func batchIndexingWorker(index bleve.Index, workChan chan *Work, timeStart time.Time) {
	for work := range workChan {
		workSize := 1
		if work.batch != nil {
			err := index.Batch(work.batch)
			if err != nil {
				log.Fatalf("indexer worker fatal: %v", err)
			}
			workSize = work.batch.Size()
		} else {
			err := index.Index(work.id, work.doc)
			if err != nil {
				log.Fatalf("indexer worker fatal: %v", err)
			}
		}
		atomic.AddUint64(&totalIndexed, uint64(workSize))
		atomic.AddUint64(&totalPlainTextIndexed, work.plainTextBytes)
	}
}

func (be *BleveEngine) BatchIndex(documents []*Document) (int64, error) {
	start := time.Now().UnixNano() / int64(time.Millisecond)
	var index bleve.Index
	mapping := bleve.NewIndexMapping()
	index, err := bleve.New(INDEX, mapping)
	if err != nil {
		index, _ = bleve.Open(INDEX)
	}

	batch := index.NewBatch()

	for _, document := range documents {
		batch.Index(document.Id, document.Data)
	}

	index.Batch(batch)
	index.Close()

	return time.Now().UnixNano()/int64(time.Millisecond) - start, nil
}

func indexTPB(i bleve.Index) error {
	batch := bleve.NewBatch()
	batchCount := 0

	gzDumpFile, err := os.Open(*dump)
	if err != nil {
		return err
	}
	defer gzDumpFile.Close()

	dumpFile, err := gzip.NewReader(gzDumpFile)
	if err != nil {
		return err
	}

	reader := csv.NewReader(dumpFile)
	reader.FieldsPerRecord = 7
	reader.Comma = '|'

	count := 0
	startTime := time.Now()

	log.Printf("Indexing...")

	for {
		r, err := reader.Read()
		if err == io.EOF {
			break
		} else if err != nil {
			continue
		}

		size, err := strconv.ParseInt(r[1], 10, 0)
		if err != nil {
			fmt.Println("%#v", size)
			size = 0
		}

		batch.Index(r[2], tpbDoc{
			Name:     r[0],
			Size:     size,
			Hash:     r[2],
			Category: r[4],
			Type:     "torrent",
		})
		batchCount++

		if batchCount >= *batchSize {
			err = i.Batch(batch)
			if err != nil {
				return err
			}
			batch = bleve.NewBatch()
			batchCount = 0
		}

		count++

		if count%1000 == 0 {
			indexDuration := time.Since(startTime)
			indexDurationSeconds := float64(indexDuration) / float64(time.Second)
			timePerDoc := float64(indexDuration) / float64(count)
			log.Printf("Indexed %d documents in %.2fs (average %.2fms/doc)", count, indexDurationSeconds, timePerDoc/float64(time.Millisecond))
		}

		if *indexLimit > 0 && count >= *indexLimit {
			break
		}
	}

	// flush the last batch
	if batchCount > 0 {
		err := i.Batch(batch)
		if err != nil {
			log.Fatal(err)
		}
	}

	indexDuration := time.Since(startTime)
	indexDurationSeconds := float64(indexDuration) / float64(time.Second)
	timePerDoc := float64(indexDuration) / float64(count)
	log.Printf("Finished indexing %d documents in %.2fs (average %.2fms/doc)", count, indexDurationSeconds, timePerDoc/float64(time.Millisecond))

	log.Printf("Still listening on http://%v", bind)

	return nil
}