go.temporal.io/server@v1.23.0/common/tasks/weighted_channel.go (about)

     1  // The MIT License
     2  //
     3  // Copyright (c) 2020 Temporal Technologies Inc.  All rights reserved.
     4  //
     5  // Copyright (c) 2020 Uber Technologies, Inc.
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     7  // Permission is hereby granted, free of charge, to any person obtaining a copy
     8  // of this software and associated documentation files (the "Software"), to deal
     9  // in the Software without restriction, including without limitation the rights
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    11  // copies of the Software, and to permit persons to whom the Software is
    12  // furnished to do so, subject to the following conditions:
    13  //
    14  // The above copyright notice and this permission notice shall be included in
    15  // all copies or substantial portions of the Software.
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    17  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    18  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    19  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    20  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    21  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    22  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    23  // THE SOFTWARE.
    24  
    25  package tasks
    26  
    27  const (
    28  	WeightedChannelDefaultSize = 1000
    29  )
    30  
    31  type (
    32  	WeightedChannels[T Task] []*WeightedChannel[T]
    33  
    34  	WeightedChannel[T Task] struct {
    35  		weight  int
    36  		channel chan T
    37  	}
    38  )
    39  
    40  func NewWeightedChannel[T Task](
    41  	weight int,
    42  	size int,
    43  ) *WeightedChannel[T] {
    44  	return &WeightedChannel[T]{
    45  		weight:  weight,
    46  		channel: make(chan T, size),
    47  	}
    48  }
    49  
    50  func (c *WeightedChannel[T]) Chan() chan T {
    51  	return c.channel
    52  }
    53  
    54  func (c *WeightedChannel[T]) Weight() int {
    55  	return c.weight
    56  }
    57  
    58  func (c *WeightedChannel[T]) SetWeight(newWeight int) {
    59  	c.weight = newWeight
    60  }
    61  
    62  func (c *WeightedChannel[T]) Len() int {
    63  	return len(c.channel)
    64  }
    65  
    66  func (c *WeightedChannel[T]) Cap() int {
    67  	return cap(c.channel)
    68  }
    69  
    70  func (c WeightedChannels[T]) Len() int {
    71  	return len(c)
    72  }
    73  func (c WeightedChannels[T]) Swap(i, j int) {
    74  	c[i], c[j] = c[j], c[i]
    75  }
    76  func (c WeightedChannels[T]) Less(i, j int) bool {
    77  	return c[i].Weight() < c[j].Weight()
    78  }