61 lines
1.5 KiB
Go
61 lines
1.5 KiB
Go
package limiter
|
|
|
|
import (
|
|
"context"
|
|
)
|
|
|
|
// -----------------------------------------------------------------
|
|
// Context
|
|
// -----------------------------------------------------------------
|
|
|
|
// Context is the limit context.
|
|
type Context struct {
|
|
Limit int64
|
|
Remaining int64
|
|
Reset int64
|
|
Reached bool
|
|
}
|
|
|
|
// -----------------------------------------------------------------
|
|
// Limiter
|
|
// -----------------------------------------------------------------
|
|
|
|
// Limiter is the limiter instance.
|
|
type Limiter struct {
|
|
Store Store
|
|
Rate Rate
|
|
Options Options
|
|
}
|
|
|
|
// New returns an instance of Limiter.
|
|
func New(store Store, rate Rate, options ...Option) *Limiter {
|
|
opt := Options{
|
|
IPv4Mask: DefaultIPv4Mask,
|
|
IPv6Mask: DefaultIPv6Mask,
|
|
TrustForwardHeader: false,
|
|
}
|
|
for _, o := range options {
|
|
o(&opt)
|
|
}
|
|
return &Limiter{
|
|
Store: store,
|
|
Rate: rate,
|
|
Options: opt,
|
|
}
|
|
}
|
|
|
|
// Get returns the limit for given identifier.
|
|
func (limiter *Limiter) Get(ctx context.Context, key string) (Context, error) {
|
|
return limiter.Store.Get(ctx, key, limiter.Rate)
|
|
}
|
|
|
|
// Peek returns the limit for given identifier, without modification on current values.
|
|
func (limiter *Limiter) Peek(ctx context.Context, key string) (Context, error) {
|
|
return limiter.Store.Peek(ctx, key, limiter.Rate)
|
|
}
|
|
|
|
// Reset sets the limit for given identifier to zero.
|
|
func (limiter *Limiter) Reset(ctx context.Context, key string) (Context, error) {
|
|
return limiter.Store.Reset(ctx, key, limiter.Rate)
|
|
}
|