kraken

1
// Copyright (c) 2016-2019 Uber Technologies, Inc.
2
//
3
// Licensed under the Apache License, Version 2.0 (the "License");
4
// you may not use this file except in compliance with the License.
5
// You may obtain a copy of the License at
6
//
7
//     http://www.apache.org/licenses/LICENSE-2.0
8
//
9
// Unless required by applicable law or agreed to in writing, software
10
// distributed under the License is distributed on an "AS IS" BASIS,
11
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12
// See the License for the specific language governing permissions and
13
// limitations under the License.
14
package hashring
15

16
 import (
17
	"github.com/uber/kraken/lib/healthcheck"
18
	"github.com/uber/kraken/lib/hostlist"
19
)
20

21
 // PassiveRing is a wrapper around Ring which supports passive health checks.
22
// See healthcheck.PassiveFilter for passive health check documentation.
23
type PassiveRing interface {
24
	Ring
25
	Failed(addr string)
26
}
27

28
 type passiveRing struct {
29
	Ring
30
	passiveFilter healthcheck.PassiveFilter
31
}
32

33
 // NewPassive creats a new PassiveRing.
34
func NewPassive(
35
	config Config,
36
	cluster hostlist.List,
37
	passiveFilter healthcheck.PassiveFilter,
38
	opts ...Option) PassiveRing {
39

40
 	return &passiveRing{
41
		New(config, cluster, passiveFilter, opts...),
42
		passiveFilter,
43
	}
44
}
45

46
 // Failed marks a request to addr as failed.
47
func (p *passiveRing) Failed(addr string) {
48
	p.passiveFilter.Failed(addr)
49
}
50