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https://github.com/diamondburned/arikawa.git
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17b9c73ce3
This commit refactors the whole package gateway as well as utils/ws
(formerly utils/wsutil) and voice/voicegateway. The new refactor
utilizes a design pattern involving a concurrent loop and an arriving
event channel.
An additional change was made to the way gateway events are typed.
Before, pretty much any type will satisfy a gateway event type, since
the actual type was just interface{}. The new refactor defines a
concrete interface that events can implement:
type Event interface {
Op() OpCode
EventType() EventType
}
Using this interface, the user can easily add custom gateway events
independently of the library without relying on string maps. This adds a
lot of type safety into the library and makes type-switching on Event
types much more reasonable.
Gateway error callbacks are also almost entirely removed in favor of
custom gateway events. A catch-all can easily be added like this:
s.AddHandler(func(err error) {
log.Println("gateway error:, err")
})
51 lines
837 B
Go
51 lines
837 B
Go
package lazytime
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import (
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"context"
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"time"
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)
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type Timer struct {
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C <-chan time.Time
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timer *time.Timer
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}
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// Reset resets the timer by draining it and resetting the internal channel. If
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// this is the first time calling, then a new timer is created.
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func (t *Timer) Reset(d time.Duration) {
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if t.timer == nil {
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t.timer = time.NewTimer(d)
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t.C = t.timer.C
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return
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}
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t.Stop()
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t.timer.Reset(d)
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}
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// Stop stops the timer and drains it. If the timer has never been used, then it
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// does nothing.
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func (t *Timer) Stop() {
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if t.timer == nil {
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return
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}
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if !t.timer.Stop() {
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select {
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case <-t.timer.C:
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default:
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}
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}
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}
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// Wait blocks until the timer fires or until the context expires.
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func (t *Timer) Wait(ctx context.Context) error {
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select {
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case <-ctx.Done():
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return ctx.Err()
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case <-t.C:
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return nil
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}
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}
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