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timeout.go
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/
timeout.go
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package fx
import (
"context"
"time"
)
var (
ErrCanceled = context.Canceled
ErrTimeout = context.DeadlineExceeded
)
type FxOption func() context.Context
func DoWithTimeout(fn func() error, timeout time.Duration, opts ...FxOption) error {
parentCtx := context.Background()
for _, opt := range opts {
parentCtx = opt()
}
ctx, cancel := context.WithTimeout(parentCtx, timeout)
defer cancel()
done := make(chan error)
panicChan := make(chan interface{}, 1)
go func() {
defer func() {
if p := recover(); p != nil {
panicChan <- p
}
}()
done <- fn()
close(done)
}()
select {
case p := <-panicChan:
panic(p)
case err := <-done:
return err
case <-ctx.Done():
return ctx.Err()
}
}
func WithContext(ctx context.Context) FxOption {
return func() context.Context {
return ctx
}
}