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lib/storage: give more clear names to functions

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This commit is contained in:
Aliaksandr Valialkin 2019-06-10 12:49:59 +03:00
parent dbd217b8f0
commit bee7298f81
1 changed files with 14 additions and 14 deletions
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28
lib/storage/index_db.go
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@ -1199,7 +1199,7 @@ func (is *indexSearch) getTagFilterWithMinMetricIDsMap(tfs *TagFilters, maxMetri
// There is no positive filter with small number of matching metrics.
// Create it, so it matches all the MetricIDs for tfs.commonPrefix.
metricIDs := make(map[uint64]struct{})
if err := is.getMetricIDsMapForCommonPrefix(metricIDs, tfs.commonPrefix, maxMetrics); err != nil {
if err := is.updateMetricIDsForCommonPrefix(metricIDs, tfs.commonPrefix, maxMetrics); err != nil {
return nil, nil, err
}
return nil, metricIDs, nil
@ -1268,49 +1268,49 @@ func matchTagFilter(b []byte, tf *tagFilter) (bool, error) {
}
func (is *indexSearch) searchMetricIDs(tfss []*TagFilters, tr TimeRange, maxMetrics int) ([]uint64, error) {
metricIDsMap := make(map[uint64]struct{})
metricIDs := make(map[uint64]struct{})
for _, tfs := range tfss {
if len(tfs.tfs) == 0 {
// Return all the metric ids
if err := is.getMetricIDsMapForCommonPrefix(metricIDsMap, tfs.commonPrefix, maxMetrics+1); err != nil {
if err := is.updateMetricIDsForCommonPrefix(metricIDs, tfs.commonPrefix, maxMetrics+1); err != nil {
return nil, err
}
if len(metricIDsMap) > maxMetrics {
if len(metricIDs) > maxMetrics {
return nil, fmt.Errorf("the number or unique timeseries exceeds %d; either narrow down the search or increase -search.maxUniqueTimeseries", maxMetrics)
}
// Stop the iteration, since we cannot find more metric ids with the remaining tfss.
break
}
if err := is.searchMetricIDsMap(metricIDsMap, tfs, tr, maxMetrics+1); err != nil {
if err := is.updateMetricIDsForTagFilters(metricIDs, tfs, tr, maxMetrics+1); err != nil {
return nil, err
}
if len(metricIDsMap) > maxMetrics {
if len(metricIDs) > maxMetrics {
return nil, fmt.Errorf("the number or matching unique timeseries exceeds %d; either narrow down the search or increase -search.maxUniqueTimeseries", maxMetrics)
}
}
if len(metricIDsMap) == 0 {
if len(metricIDs) == 0 {
// Nothing found
return nil, nil
}
metricIDs := getSortedMetricIDs(metricIDsMap)
sortedMetricIDs := getSortedMetricIDs(metricIDs)
// Filter out deleted metricIDs.
dmis := is.db.getDeletedMetricIDs()
if len(dmis) > 0 {
metricIDsFiltered := metricIDs[:0]
for _, metricID := range metricIDs {
metricIDsFiltered := sortedMetricIDs[:0]
for _, metricID := range sortedMetricIDs {
if _, deleted := dmis[metricID]; !deleted {
metricIDsFiltered = append(metricIDsFiltered, metricID)
}
}
metricIDs = metricIDsFiltered
sortedMetricIDs = metricIDsFiltered
}
return metricIDs, nil
return sortedMetricIDs, nil
}
func (is *indexSearch) searchMetricIDsMap(metricIDs map[uint64]struct{}, tfs *TagFilters, tr TimeRange, maxMetrics int) error {
func (is *indexSearch) updateMetricIDsForTagFilters(metricIDs map[uint64]struct{}, tfs *TagFilters, tr TimeRange, maxMetrics int) error {
// Sort tag filters for faster ts.Seek below.
sort.Slice(tfs.tfs, func(i, j int) bool { return bytes.Compare(tfs.tfs[i].prefix, tfs.tfs[j].prefix) < 0 })
@ -1726,7 +1726,7 @@ func (is *indexSearch) getMetricIDsForDate(date uint64, metricIDs map[uint64]str
return nil
}
func (is *indexSearch) getMetricIDsMapForCommonPrefix(metricIDs map[uint64]struct{}, commonPrefix []byte, maxMetrics int) error {
func (is *indexSearch) updateMetricIDsForCommonPrefix(metricIDs map[uint64]struct{}, commonPrefix []byte, maxMetrics int) error {
ts := &is.ts
ts.Seek(commonPrefix)
for len(metricIDs) < maxMetrics && ts.NextItem() {