github.com/m3db/m3@v1.5.0/src/m3ninx/index/segment/fst/options.go (about)

     1  // Copyright (c) 2018 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 fst
    22  
    23  import (
    24  	"github.com/m3db/m3/src/m3ninx/postings"
    25  	"github.com/m3db/m3/src/m3ninx/postings/roaring"
    26  	"github.com/m3db/m3/src/m3ninx/x/bytes"
    27  	"github.com/m3db/m3/src/x/context"
    28  	"github.com/m3db/m3/src/x/instrument"
    29  	"github.com/m3db/m3/src/x/pool"
    30  )
    31  
    32  const (
    33  	defaultBytesArrayPoolCapacity = 128
    34  )
    35  
    36  // Options is a collection of knobs for a fs segment.
    37  type Options interface {
    38  	// SetInstrumentOptions sets the instrument options.
    39  	SetInstrumentOptions(value instrument.Options) Options
    40  
    41  	// InstrumentOptions returns the instrument options.
    42  	InstrumentOptions() instrument.Options
    43  
    44  	// SetBytesPool sets the bytes pool.
    45  	SetBytesPool(value pool.BytesPool) Options
    46  
    47  	// BytesPool returns the bytes pool.
    48  	BytesPool() pool.BytesPool
    49  
    50  	// SetPostingsListPool sets the postings list pool.
    51  	SetPostingsListPool(value postings.Pool) Options
    52  
    53  	// PostingsListPool returns the postings list pool.
    54  	PostingsListPool() postings.Pool
    55  
    56  	// SetContextPool sets the contextPool.
    57  	SetContextPool(value context.Pool) Options
    58  
    59  	// ContextPool returns the contextPool.
    60  	ContextPool() context.Pool
    61  }
    62  
    63  type opts struct {
    64  	iopts             instrument.Options
    65  	bytesSliceArrPool bytes.SliceArrayPool
    66  	bytesPool         pool.BytesPool
    67  	postingsPool      postings.Pool
    68  	contextPool       context.Pool
    69  }
    70  
    71  // NewOptions returns new options.
    72  func NewOptions() Options {
    73  	arrPool := bytes.NewSliceArrayPool(bytes.SliceArrayPoolOpts{
    74  		Capacity: defaultBytesArrayPoolCapacity,
    75  		Options:  pool.NewObjectPoolOptions(),
    76  	})
    77  	arrPool.Init()
    78  
    79  	bytesPool := pool.NewBytesPool([]pool.Bucket{
    80  		{Capacity: 256, Count: 1024},
    81  	}, nil)
    82  	bytesPool.Init()
    83  
    84  	return &opts{
    85  		iopts:             instrument.NewOptions(),
    86  		bytesSliceArrPool: arrPool,
    87  		bytesPool:         bytesPool,
    88  		postingsPool:      postings.NewPool(nil, roaring.NewPostingsList),
    89  		// Use a zero pool, this should be overriden at config time.
    90  		contextPool: context.NewPool(context.NewOptions().
    91  			SetContextPoolOptions(pool.NewObjectPoolOptions().SetSize(0)).
    92  			SetFinalizerPoolOptions(pool.NewObjectPoolOptions().SetSize(0))),
    93  	}
    94  }
    95  
    96  func (o *opts) SetInstrumentOptions(v instrument.Options) Options {
    97  	opts := *o
    98  	opts.iopts = v
    99  	return &opts
   100  }
   101  
   102  func (o *opts) InstrumentOptions() instrument.Options {
   103  	return o.iopts
   104  }
   105  
   106  func (o *opts) SetBytesPool(value pool.BytesPool) Options {
   107  	opts := *o
   108  	opts.bytesPool = value
   109  	return &opts
   110  }
   111  
   112  func (o *opts) BytesPool() pool.BytesPool {
   113  	return o.bytesPool
   114  }
   115  
   116  func (o *opts) SetPostingsListPool(v postings.Pool) Options {
   117  	opts := *o
   118  	opts.postingsPool = v
   119  	return &opts
   120  }
   121  
   122  func (o *opts) PostingsListPool() postings.Pool {
   123  	return o.postingsPool
   124  }
   125  
   126  func (o *opts) SetContextPool(value context.Pool) Options {
   127  	opts := *o
   128  	opts.contextPool = value
   129  	return &opts
   130  }
   131  
   132  func (o *opts) ContextPool() context.Pool {
   133  	return o.contextPool
   134  }