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fetch_result_map_wrapper.go
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fetch_result_map_wrapper.go
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// Copyright (c) 2020 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package consolidators
import (
"bytes"
"sort"
"github.com/m3db/m3/src/query/models"
)
type ascByID []multiResultSeries
func (m ascByID) Len() int { return len(m) }
func (m ascByID) Less(i, j int) bool {
return bytes.Compare(m[i].tags.LastComputedID(),
m[j].tags.LastComputedID()) == -1
}
func (m ascByID) Swap(i, j int) { m[i], m[j] = m[j], m[i] }
type fetchResultMapWrapper struct {
resultMap *fetchResultMap
}
func (w *fetchResultMapWrapper) len() int {
return w.resultMap.Len()
}
func (w *fetchResultMapWrapper) list() []multiResultSeries {
result := make([]multiResultSeries, 0, w.len())
for _, results := range w.resultMap.Iter() {
result = append(result, results.value)
}
sort.Sort(ascByID(result))
return result
}
func (w *fetchResultMapWrapper) get(tags models.Tags) (multiResultSeries, bool) {
return w.resultMap.Get(tags)
}
func (w *fetchResultMapWrapper) close() {
w.resultMap.Reset()
}
func (w *fetchResultMapWrapper) set(
tags models.Tags, series multiResultSeries,
) {
series.tags = tags
w.resultMap.SetUnsafe(tags, series, fetchResultMapSetUnsafeOptions{
NoCopyKey: true,
NoFinalizeKey: true,
})
}
// newFetchResultMapWrapper builds a wrapper on fetchResultMap functions.
func newFetchResultMapWrapper(size int) *fetchResultMapWrapper {
return &fetchResultMapWrapper{
resultMap: _fetchResultMapAlloc(_fetchResultMapOptions{
hash: func(t models.Tags) fetchResultMapHash {
return fetchResultMapHash(t.LastComputedHashedID())
},
equals: func(x, y models.Tags) bool {
// NB: IDs are calculated once for tags, so any further calls to these
// equals is a simple lookup.
return bytes.Equal(x.LastComputedID(), y.LastComputedID())
},
initialSize: size,
}),
}
}