github.com/m3db/m3@v1.5.0/src/query/block/options.go (about)

     1  // Copyright (c) 2019 Uber Technologies, Inc.
     2  //
     3  // Permission is hereby granted, free of charge, to any person obtaining a copy
     4  // of this software and associated documentation files (the "Software"), to deal
     5  // in the Software without restriction, including without limitation the rights
     6  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     7  // copies of the Software, and to permit persons to whom the Software is
     8  // furnished to do so, subject to the following conditions:
     9  //
    10  // The above copyright notice and this permission notice shall be included in
    11  // all copies or substantial portions of the Software.
    12  //
    13  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    14  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    15  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    16  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    17  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    18  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    19  // THE SOFTWARE.
    20  
    21  package block
    22  
    23  import xtime "github.com/m3db/m3/src/x/time"
    24  
    25  var (
    26  	defaultTimeTransform       = func(t xtime.UnixNano) xtime.UnixNano { return t }
    27  	defaultValueTransform      = func(v float64) float64 { return v }
    28  	defaultMetaTransform       = func(m Metadata) Metadata { return m }
    29  	defaultSeriesMetaTransform = func(m []SeriesMeta) []SeriesMeta { return m }
    30  )
    31  
    32  type lazyOpts struct {
    33  	timeTransform       TimeTransform
    34  	valueTransform      ValueTransform
    35  	metaTransform       MetaTransform
    36  	seriesMetaTransform SeriesMetaTransform
    37  }
    38  
    39  // NewLazyOptions creates LazyOpts with default values.
    40  func NewLazyOptions() LazyOptions {
    41  	return &lazyOpts{
    42  		timeTransform:       defaultTimeTransform,
    43  		valueTransform:      defaultValueTransform,
    44  		metaTransform:       defaultMetaTransform,
    45  		seriesMetaTransform: defaultSeriesMetaTransform,
    46  	}
    47  }
    48  
    49  func (o *lazyOpts) SetTimeTransform(t TimeTransform) LazyOptions {
    50  	opts := *o
    51  	opts.timeTransform = t
    52  	return &opts
    53  }
    54  
    55  func (o *lazyOpts) TimeTransform() TimeTransform {
    56  	return o.timeTransform
    57  }
    58  
    59  func (o *lazyOpts) SetValueTransform(t ValueTransform) LazyOptions {
    60  	opts := *o
    61  	opts.valueTransform = t
    62  	return &opts
    63  }
    64  
    65  func (o *lazyOpts) ValueTransform() ValueTransform {
    66  	return o.valueTransform
    67  }
    68  
    69  func (o *lazyOpts) SetMetaTransform(t MetaTransform) LazyOptions {
    70  	opts := *o
    71  	opts.metaTransform = t
    72  	return &opts
    73  }
    74  
    75  func (o *lazyOpts) MetaTransform() MetaTransform {
    76  	return o.metaTransform
    77  }
    78  
    79  func (o *lazyOpts) SetSeriesMetaTransform(t SeriesMetaTransform) LazyOptions {
    80  	opts := *o
    81  	opts.seriesMetaTransform = t
    82  	return &opts
    83  }
    84  
    85  func (o *lazyOpts) SeriesMetaTransform() SeriesMetaTransform {
    86  	return o.seriesMetaTransform
    87  }