github.com/m3db/m3@v1.5.0/src/msg/producer/buffer/types.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 buffer
    22  
    23  import (
    24  	"time"
    25  
    26  	"github.com/m3db/m3/src/x/instrument"
    27  	"github.com/m3db/m3/src/x/retry"
    28  )
    29  
    30  // OnFullStrategy defines the buffer behavior when the buffer is full.
    31  type OnFullStrategy string
    32  
    33  const (
    34  	// ReturnError means an error will be returned
    35  	// on new buffer requests when the buffer is full.
    36  	ReturnError OnFullStrategy = "returnError"
    37  
    38  	// DropOldest means the oldest message in the buffer
    39  	// will be dropped to make room for new buffer requests
    40  	// when the buffer is full.
    41  	DropOldest OnFullStrategy = "dropOldest"
    42  )
    43  
    44  // Options configs the buffer.
    45  type Options interface {
    46  	// OnFullStrategy returns the strategy when buffer is full.
    47  	OnFullStrategy() OnFullStrategy
    48  
    49  	// SetOnFullStrategy sets the strategy when buffer is full.
    50  	SetOnFullStrategy(value OnFullStrategy) Options
    51  
    52  	// MaxMessageSize returns the max message size.
    53  	MaxMessageSize() int
    54  
    55  	// SetMaxMessageSize sets the max message size.
    56  	SetMaxMessageSize(value int) Options
    57  
    58  	// MaxBufferSize returns the max buffer size.
    59  	MaxBufferSize() int
    60  
    61  	// SetMaxBufferSize sets the max buffer size.
    62  	SetMaxBufferSize(value int) Options
    63  
    64  	// CloseCheckInterval returns the close check interval.
    65  	CloseCheckInterval() time.Duration
    66  
    67  	// SetCloseCheckInterval sets the close check interval.
    68  	SetCloseCheckInterval(value time.Duration) Options
    69  
    70  	// DropOldestInterval returns the interval to drop oldest buffer.
    71  	// The max buffer size might be spilled over during the interval.
    72  	DropOldestInterval() time.Duration
    73  
    74  	// SetDropOldestInterval sets the interval to drop oldest buffer.
    75  	// The max buffer size might be spilled over during the interval.
    76  	SetDropOldestInterval(value time.Duration) Options
    77  
    78  	// ScanBatchSize returns the scan batch size.
    79  	ScanBatchSize() int
    80  
    81  	// SetScanBatchSize sets the scan batch size.
    82  	SetScanBatchSize(value int) Options
    83  
    84  	// AllowedSpilloverRatio returns the ratio for allowed buffer spill over,
    85  	// below which the buffer will drop oldest messages asynchronizely for
    86  	// better performance. When the limit for allowed spill over is reached,
    87  	// the buffer will start to drop oldest messages synchronizely.
    88  	AllowedSpilloverRatio() float64
    89  
    90  	// SetAllowedSpilloverRatio sets the ratio for allowed buffer spill over.
    91  	SetAllowedSpilloverRatio(value float64) Options
    92  
    93  	// CleanupRetryOptions returns the cleanup retry options.
    94  	CleanupRetryOptions() retry.Options
    95  
    96  	// SetCleanupRetryOptions sets the cleanup retry options.
    97  	SetCleanupRetryOptions(value retry.Options) Options
    98  
    99  	// InstrumentOptions returns the instrument options.
   100  	InstrumentOptions() instrument.Options
   101  
   102  	// SetInstrumentOptions sets the instrument options.
   103  	SetInstrumentOptions(value instrument.Options) Options
   104  
   105  	// Validate validates the options.
   106  	Validate() error
   107  }