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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