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			65 lines
		
	
	
		
			1.5 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			65 lines
		
	
	
		
			1.5 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
package connmgr
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import (
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	"errors"
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	"time"
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	"github.com/benbjohnson/clock"
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)
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// config is the configuration struct for the basic connection manager.
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type config struct {
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	highWater     int
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	lowWater      int
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	gracePeriod   time.Duration
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	silencePeriod time.Duration
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	decayer       *DecayerCfg
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	emergencyTrim bool
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	clock         clock.Clock
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}
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// Option represents an option for the basic connection manager.
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type Option func(*config) error
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// DecayerConfig applies a configuration for the decayer.
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func DecayerConfig(opts *DecayerCfg) Option {
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	return func(cfg *config) error {
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		cfg.decayer = opts
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		return nil
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	}
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}
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// WithClock sets the internal clock impl
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func WithClock(c clock.Clock) Option {
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	return func(cfg *config) error {
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		cfg.clock = c
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		return nil
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	}
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}
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// WithGracePeriod sets the grace period.
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// The grace period is the time a newly opened connection is given before it becomes
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// subject to pruning.
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func WithGracePeriod(p time.Duration) Option {
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	return func(cfg *config) error {
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		if p < 0 {
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			return errors.New("grace period must be non-negative")
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		}
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		cfg.gracePeriod = p
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		return nil
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	}
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}
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// WithSilencePeriod sets the silence period.
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// The connection manager will perform a cleanup once per silence period
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// if the number of connections surpasses the high watermark.
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func WithSilencePeriod(p time.Duration) Option {
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	return func(cfg *config) error {
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		if p <= 0 {
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			return errors.New("silence period must be non-zero")
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		}
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		cfg.silencePeriod = p
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		return nil
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	}
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}
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