113 lines
3.9 KiB
Go
113 lines
3.9 KiB
Go
// Copyright 2016 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package etcdserver
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import (
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"net/http"
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"testing"
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"time"
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"go.uber.org/zap"
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"go.etcd.io/etcd/pkg/v3/types"
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"go.etcd.io/etcd/v3/etcdserver/api/membership"
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"go.etcd.io/etcd/v3/etcdserver/api/rafthttp"
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"go.etcd.io/etcd/v3/etcdserver/api/snap"
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"go.etcd.io/etcd/v3/raft/raftpb"
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)
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func TestLongestConnected(t *testing.T) {
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umap, err := types.NewURLsMap("mem1=http://10.1:2379,mem2=http://10.2:2379,mem3=http://10.3:2379")
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if err != nil {
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t.Fatal(err)
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}
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clus, err := membership.NewClusterFromURLsMap(zap.NewExample(), "test", umap)
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if err != nil {
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t.Fatal(err)
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}
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memberIDs := clus.MemberIDs()
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tr := newNopTransporterWithActiveTime(memberIDs)
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transferee, ok := longestConnected(tr, memberIDs)
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if !ok {
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t.Fatalf("unexpected ok %v", ok)
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}
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if memberIDs[0] != transferee {
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t.Fatalf("expected first member %s to be transferee, got %s", memberIDs[0], transferee)
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}
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// make all members non-active
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amap := make(map[types.ID]time.Time)
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for _, id := range memberIDs {
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amap[id] = time.Time{}
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}
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tr.(*nopTransporterWithActiveTime).reset(amap)
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_, ok2 := longestConnected(tr, memberIDs)
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if ok2 {
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t.Fatalf("unexpected ok %v", ok)
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}
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}
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type nopTransporterWithActiveTime struct {
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activeMap map[types.ID]time.Time
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}
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// newNopTransporterWithActiveTime creates nopTransporterWithActiveTime with the first member
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// being the most stable (longest active-since time).
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func newNopTransporterWithActiveTime(memberIDs []types.ID) rafthttp.Transporter {
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am := make(map[types.ID]time.Time)
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for i, id := range memberIDs {
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am[id] = time.Now().Add(time.Duration(i) * time.Second)
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}
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return &nopTransporterWithActiveTime{activeMap: am}
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}
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func (s *nopTransporterWithActiveTime) Start() error { return nil }
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func (s *nopTransporterWithActiveTime) Handler() http.Handler { return nil }
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func (s *nopTransporterWithActiveTime) Send(m []raftpb.Message) {}
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func (s *nopTransporterWithActiveTime) SendSnapshot(m snap.Message) {}
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func (s *nopTransporterWithActiveTime) AddRemote(id types.ID, us []string) {}
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func (s *nopTransporterWithActiveTime) AddPeer(id types.ID, us []string) {}
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func (s *nopTransporterWithActiveTime) RemovePeer(id types.ID) {}
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func (s *nopTransporterWithActiveTime) RemoveAllPeers() {}
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func (s *nopTransporterWithActiveTime) UpdatePeer(id types.ID, us []string) {}
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func (s *nopTransporterWithActiveTime) ActiveSince(id types.ID) time.Time { return s.activeMap[id] }
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func (s *nopTransporterWithActiveTime) ActivePeers() int { return 0 }
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func (s *nopTransporterWithActiveTime) Stop() {}
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func (s *nopTransporterWithActiveTime) Pause() {}
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func (s *nopTransporterWithActiveTime) Resume() {}
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func (s *nopTransporterWithActiveTime) reset(am map[types.ID]time.Time) { s.activeMap = am }
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func TestPanicAlternativeStringer(t *testing.T) {
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p := panicAlternativeStringer{alternative: func() string { return "alternative" }}
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p.stringer = testStringerFunc(func() string { panic("here") })
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if s := p.String(); s != "alternative" {
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t.Fatalf("expected 'alternative', got %q", s)
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}
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p.stringer = testStringerFunc(func() string { return "test" })
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if s := p.String(); s != "test" {
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t.Fatalf("expected 'test', got %q", s)
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}
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}
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type testStringerFunc func() string
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func (s testStringerFunc) String() string {
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return s()
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}
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