github.com/uber/kraken@v0.1.4/lib/healthcheck/list.go (about)

     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 healthcheck
    15  
    16  import (
    17  	"github.com/uber/kraken/lib/hostlist"
    18  )
    19  
    20  // List is a hostlist.List which can be passively health checked.
    21  type List interface {
    22  	hostlist.List
    23  	Failed(addr string)
    24  }
    25  
    26  type noopFailed struct {
    27  	hostlist.List
    28  }
    29  
    30  func (f *noopFailed) Failed(addr string) {}
    31  
    32  // NoopFailed converts a hostlist.List to a List by making the Failed method
    33  // a no-op. Useful for using a Monitor in place of a Passive.
    34  func NoopFailed(list hostlist.List) List {
    35  	return &noopFailed{list}
    36  }