func (self *Shard) Query(querySpec *parser.QuerySpec, processor cluster.QueryProcessor) error {
if querySpec.IsListSeriesQuery() {
return self.executeListSeriesQuery(querySpec, processor)
} else if querySpec.IsDeleteFromSeriesQuery() {
return self.executeDeleteQuery(querySpec, processor)
}
seriesAndColumns := querySpec.SelectQuery().GetReferencedColumns()
if !self.hasReadAccess(querySpec) {
return errors.New("User does not have access to one or more of the series requested.")
}
for series, columns := range seriesAndColumns {
if regex, ok := series.GetCompiledRegex(); ok {
seriesNames := self.metaStore.GetSeriesForDatabaseAndRegex(querySpec.Database(), regex)
for _, name := range seriesNames {
if !querySpec.HasReadAccess(name) {
continue
}
err := self.executeQueryForSeries(querySpec, name, columns, processor)
if err != nil {
return err
}
}
} else {
err := self.executeQueryForSeries(querySpec, series.Name, columns, processor)
if err != nil {
return err
}
}
}
return nil
}
func (self *Shard) hasReadAccess(querySpec *parser.QuerySpec) bool {
for series := range querySpec.SeriesValuesAndColumns() {
if _, isRegex := series.GetCompiledRegex(); !isRegex {
if !querySpec.HasReadAccess(series.Name) {
return false
}
}
}
return true
}