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encoded_unconsolidated_step_iterator.go
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encoded_unconsolidated_step_iterator.go
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// Copyright (c) 2018 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 m3db
import (
"github.com/m3db/m3/src/query/block"
"github.com/m3db/m3/src/query/storage"
"github.com/m3db/m3/src/query/ts/m3db/consolidators"
)
type encodedStepIterUnconsolidated struct {
accumulator *consolidators.StepLookbackAccumulator
encodedStepIterWithCollector
}
func (b *encodedBlockUnconsolidated) StepIter() (
block.UnconsolidatedStepIter,
error,
) {
cs := b.consolidation
iters := b.seriesBlockIterators
accumulator := consolidators.NewStepLookbackAccumulator(
b.lookback,
cs.bounds.StepSize,
cs.currentTime,
len(b.seriesBlockIterators),
)
return &encodedStepIterUnconsolidated{
accumulator: accumulator,
encodedStepIterWithCollector: encodedStepIterWithCollector{
lastBlock: b.lastBlock,
stepTime: cs.currentTime,
meta: b.meta,
seriesMeta: b.seriesMetas,
collector: accumulator,
seriesPeek: make([]peekValue, len(iters)),
seriesIters: iters,
},
}, nil
}
func (it *encodedStepIterUnconsolidated) Current() block.UnconsolidatedStep {
points := it.accumulator.AccumulateAndMoveToNext()
return storage.NewUnconsolidatedStep(it.stepTime, points)
}