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package metric
import (
"context"
otelmetric "go.opentelemetry.io/otel/metric"
"go.opentelemetry.io/otel/trace"
)
var (
_ AllowLimiter = (*AllowLimiterInstrumentation)(nil)
)
type AllowLimiter interface {
Allow(context.Context) bool
}
type AllowLimiterInstrumentation struct {
wrapper *LimiterWrapper
delegate AllowLimiter
}
func NewAllowLimiterInstrumentation(limiterName string, limit float64, limitUnit string, tr trace.Tracer, m otelmetric.Meter, delegate AllowLimiter) (*AllowLimiterInstrumentation, error) {
w, err := NewLimiterWrapper(limiterName, limit, limitUnit, m, tr)
if err != nil {
return nil, err
}
return &AllowLimiterInstrumentation{
wrapper: w,
delegate: delegate,
}, nil
}
func (i *AllowLimiterInstrumentation) Allow(ctx context.Context) (allowed bool) {
ctx, done := i.wrapper.Start(ctx)
defer func() { // to handle panics
done(allowed)
}()
return i.delegate.Allow(ctx)
}
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