Exemplo n.º 1
0
func WalkViewInBatches(result chan cb.ViewRow, errs chan errors.Error, bucket *cb.Bucket,
	ddoc string, view string, options map[string]interface{}, batchSize int64, limit int64) {

	if limit != 0 && limit < batchSize {
		batchSize = limit
	}

	defer close(result)
	defer close(errs)

	defer func() {
		r := recover()
		if r != nil {
			logging.Errorf("View Walking Panic: %v\n%s", r, debug.Stack())
			errs <- errors.NewCbViewsAccessError(nil, "Panic In walking view "+view)
		}
	}()

	options["limit"] = batchSize + 1

	numRead := int64(0)
	ok := true
	for ok {

		logURL, err := bucket.ViewURL(ddoc, view, options)
		if err == nil {
			logging.Infof("Request View: %v", logURL)
		}
		vres, err := bucket.View(ddoc, view, options)
		if err != nil {
			errs <- errors.NewCbViewsAccessError(err, "View name "+view)
			return
		}

		for i, row := range vres.Rows {
			if int64(i) < batchSize {
				// dont process the last row, its just used to see if we
				// need to continue processing
				result <- row
				numRead += 1
			}
		}

		if (int64(len(vres.Rows)) > batchSize) && (limit == 0 || (limit != 0 && numRead < limit)) {
			// prepare for next run
			skey := vres.Rows[batchSize].Key
			skeydocid := vres.Rows[batchSize].ID
			options["startkey"] = skey
			options["startkey_docid"] = cb.DocID(skeydocid)
		} else {
			// stop
			ok = false
		}
	}
}
Exemplo n.º 2
0
func ViewTotalRows(bucket *cb.Bucket, ddoc string, view string, options map[string]interface{}) (int64, errors.Error) {
	options["limit"] = 0

	logURL, err := bucket.ViewURL(ddoc, view, options)
	if err == nil {
		logging.Infof("Request View: %v", logURL)
	}
	vres, err := bucket.View(ddoc, view, options)
	if err != nil {
		return 0, errors.NewCbViewsAccessError(err, "View Name"+view)
	}

	return int64(vres.TotalRows), nil
}
Exemplo n.º 3
0
func ViewTotalRows(bucket *cb.Bucket, ddoc string, view string, options map[string]interface{}) (int64, query.Error) {
	options["limit"] = 0

	logURL, err := bucket.ViewURL(ddoc, view, options)
	if err == nil {
		clog.To(NETWORK_CHANNEL, "Request View: %v", logURL)
	}
	vres, err := bucket.View(ddoc, view, options)
	if err != nil {
		return 0, query.NewError(err, "Unable to access view")
	}

	return int64(vres.TotalRows), nil
}