-
Notifications
You must be signed in to change notification settings - Fork 25
/
options.go
52 lines (46 loc) · 1.93 KB
/
options.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
// Copyright 2015-present, Cyrill @ Schumacher.fm and the CoreStore contributors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package backendratelimit
import (
"github.com/corestoreio/errors"
"github.com/corestoreio/pkg/config"
"github.com/corestoreio/pkg/net/ratelimit"
)
// PrepareOptionFactory creates a closure around the type Backend. The closure will be
// used during a scoped request to figure out the configuration depending on the
// incoming scope. An option array will be returned by the closure.
func (be *Configuration) PrepareOptionFactory() ratelimit.OptionFactoryFunc {
return func(sg config.Scoped) []ratelimit.Option {
var opts []ratelimit.Option
disabled, err := be.Disabled.Get(sg)
if err != nil {
return ratelimit.OptionsError(errors.Wrap(err, "[backendratelimit] RateLimitDisabled.Get"))
}
opts = append(opts, ratelimit.WithDisable(disabled, sg.ScopeIDs()...))
if disabled {
return opts
}
name, err := be.GCRAName.Get(sg)
if err != nil {
return ratelimit.OptionsError(errors.Wrap(err, "[backendratelimit] RateLimitGCRAName.Get"))
}
// name contains the configured ratelimit calculation/storage engine. in this case either
// memstore or redigostore. Of course you can plugin your own engine.
off, err := be.Lookup(name) // off = OptionFactoryFunc
if err != nil {
return ratelimit.OptionsError(errors.Wrap(err, "[backendratelimit] Backend.Lookup"))
}
return append(opts, off(sg)...)
}
}