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// Copyright 2016 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 etcdserver
import (
"net/http"
"testing"
"time"
"github.com/coreos/etcd/etcdserver/membership"
"github.com/coreos/etcd/pkg/types"
"github.com/coreos/etcd/raft/raftpb"
"github.com/coreos/etcd/rafthttp"
"github.com/coreos/etcd/snap"
)
func TestLongestConnected(t *testing.T) {
umap, err := types.NewURLsMap("mem1=http://10.1:2379,mem2=http://10.2:2379,mem3=http://10.3:2379")
if err != nil {
t.Fatal(err)
}
clus, err := membership.NewClusterFromURLsMap("test", umap)
if err != nil {
t.Fatal(err)
}
memberIDs := clus.MemberIDs()
tr := newNopTransporterWithActiveTime(memberIDs)
transferee, ok := longestConnected(tr, memberIDs)
if !ok {
t.Fatalf("unexpected ok %v", ok)
}
if memberIDs[0] != transferee {
t.Fatalf("expected first member %s to be transferee, got %s", memberIDs[0], transferee)
}
// make all members non-active
amap := make(map[types.ID]time.Time)
for _, id := range memberIDs {
amap[id] = time.Time{}
}
tr.(*nopTransporterWithActiveTime).reset(amap)
_, ok2 := longestConnected(tr, memberIDs)
if ok2 {
t.Fatalf("unexpected ok %v", ok)
}
}
type nopTransporterWithActiveTime struct {
activeMap map[types.ID]time.Time
}
// newNopTransporterWithActiveTime creates nopTransporterWithActiveTime with the first member
// being the most stable (longest active-since time).
func newNopTransporterWithActiveTime(memberIDs []types.ID) rafthttp.Transporter {
am := make(map[types.ID]time.Time)
for i, id := range memberIDs {
am[id] = time.Now().Add(time.Duration(i) * time.Second)
}
return &nopTransporterWithActiveTime{activeMap: am}
}
func (s *nopTransporterWithActiveTime) Start() error { return nil }
func (s *nopTransporterWithActiveTime) Handler() http.Handler { return nil }
func (s *nopTransporterWithActiveTime) Send(m []raftpb.Message) {}
func (s *nopTransporterWithActiveTime) SendSnapshot(m snap.Message) {}
func (s *nopTransporterWithActiveTime) AddRemote(id types.ID, us []string) {}
func (s *nopTransporterWithActiveTime) AddPeer(id types.ID, us []string) {}
func (s *nopTransporterWithActiveTime) RemovePeer(id types.ID) {}
func (s *nopTransporterWithActiveTime) RemoveAllPeers() {}
func (s *nopTransporterWithActiveTime) UpdatePeer(id types.ID, us []string) {}
func (s *nopTransporterWithActiveTime) ActiveSince(id types.ID) time.Time { return s.activeMap[id] }
func (s *nopTransporterWithActiveTime) ActivePeers() int { return 0 }
func (s *nopTransporterWithActiveTime) Stop() {}
func (s *nopTransporterWithActiveTime) Pause() {}
func (s *nopTransporterWithActiveTime) Resume() {}
func (s *nopTransporterWithActiveTime) reset(am map[types.ID]time.Time) { s.activeMap = am }
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