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// Package closer provides signaling channel for shutdown
package closer
import (
"context"
)
// Closer allows for each signaling a channel for shutdown
type Closer struct {
ctx context.Context
closeFunc func()
}
// NewCloser creates a new instance of Closer
func NewCloser() *Closer {
ctx, closeFunc := context.WithCancel(context.Background())
return &Closer{
ctx: ctx,
closeFunc: closeFunc,
}
}
// NewCloserWithParent creates a new instance of Closer with a parent context
func NewCloserWithParent(ctx context.Context) *Closer {
ctx, closeFunc := context.WithCancel(ctx)
return &Closer{
ctx: ctx,
closeFunc: closeFunc,
}
}
// Done returns a channel signaling when it is done
func (c *Closer) Done() <-chan struct{} {
return c.ctx.Done()
}
// Err returns an error of the context
func (c *Closer) Err() error {
return c.ctx.Err()
}
// Close sends a signal to trigger the ctx done channel
func (c *Closer) Close() {
c.closeFunc()
}
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