Revision 998f8bf291a46cd47cc8f4da12727b7684f08a54 authored by Anthony Romano on 06 January 2017, 19:52:26 UTC, committed by GitHub on 06 January 2017, 19:52:26 UTC
expect: EXPECT_DEBUG environment variable
urlpick.go
// Copyright 2015 The etcd Authors
//
// 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 rafthttp
import (
"net/url"
"sync"
"github.com/coreos/etcd/pkg/types"
)
type urlPicker struct {
mu sync.Mutex // guards urls and picked
urls types.URLs
picked int
}
func newURLPicker(urls types.URLs) *urlPicker {
return &urlPicker{
urls: urls,
}
}
func (p *urlPicker) update(urls types.URLs) {
p.mu.Lock()
defer p.mu.Unlock()
p.urls = urls
p.picked = 0
}
func (p *urlPicker) pick() url.URL {
p.mu.Lock()
defer p.mu.Unlock()
return p.urls[p.picked]
}
// unreachable notices the picker that the given url is unreachable,
// and it should use other possible urls.
func (p *urlPicker) unreachable(u url.URL) {
p.mu.Lock()
defer p.mu.Unlock()
if u == p.urls[p.picked] {
p.picked = (p.picked + 1) % len(p.urls)
}
}
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