/usr/share/gocode/src/github.com/hashicorp/raft/integ_test.go is in golang-github-hashicorp-raft-dev 0.0~git20150728.9b586e2-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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import (
"bytes"
"fmt"
"io/ioutil"
"log"
"os"
"testing"
"time"
)
// CheckInteg will skip a test if integration testing is not enabled.
func CheckInteg(t *testing.T) {
if !IsInteg() {
t.SkipNow()
}
}
// IsInteg returns a boolean telling you if we're in integ testing mode.
func IsInteg() bool {
return os.Getenv("INTEG_TESTS") != ""
}
type RaftEnv struct {
dir string
conf *Config
fsm *MockFSM
store *InmemStore
snapshot *FileSnapshotStore
peers *JSONPeers
trans *NetworkTransport
raft *Raft
}
func (r *RaftEnv) Release() {
log.Printf("[WARN] Release node at %v", r.raft.localAddr)
f := r.raft.Shutdown()
if err := f.Error(); err != nil {
panic(err)
}
r.trans.Close()
os.RemoveAll(r.dir)
}
func MakeRaft(t *testing.T, conf *Config) *RaftEnv {
env := &RaftEnv{}
// Set the config
if conf == nil {
conf = inmemConfig()
}
env.conf = conf
dir, err := ioutil.TempDir("", "raft")
if err != nil {
t.Fatalf("err: %v ", err)
}
env.dir = dir
stable := NewInmemStore()
env.store = stable
snap, err := NewFileSnapshotStore(dir, 3, nil)
if err != nil {
t.Fatalf("err: %v", err)
}
env.snapshot = snap
env.fsm = &MockFSM{}
trans, err := NewTCPTransport("127.0.0.1:0", nil, 2, time.Second, nil)
if err != nil {
t.Fatalf("err: %v", err)
}
env.trans = trans
env.peers = NewJSONPeers(dir, trans)
log.Printf("[INFO] Starting node at %v", trans.LocalAddr())
raft, err := NewRaft(conf, env.fsm, stable, stable, snap, env.peers, trans)
if err != nil {
t.Fatalf("err: %v", err)
}
env.raft = raft
return env
}
func WaitFor(env *RaftEnv, state RaftState) error {
limit := time.Now().Add(200 * time.Millisecond)
for env.raft.State() != state {
if time.Now().Before(limit) {
time.Sleep(10 * time.Millisecond)
} else {
return fmt.Errorf("failed to transition to state %v", state)
}
}
return nil
}
func WaitForAny(state RaftState, envs []*RaftEnv) (*RaftEnv, error) {
limit := time.Now().Add(200 * time.Millisecond)
CHECK:
for _, env := range envs {
if env.raft.State() == state {
return env, nil
}
}
if time.Now().Before(limit) {
goto WAIT
}
return nil, fmt.Errorf("failed to find node in %v state", state)
WAIT:
time.Sleep(10 * time.Millisecond)
goto CHECK
}
func WaitFuture(f Future, t *testing.T) error {
timer := time.AfterFunc(200*time.Millisecond, func() {
panic(fmt.Errorf("timeout waiting for future %v", f))
})
defer timer.Stop()
return f.Error()
}
func NoErr(err error, t *testing.T) {
if err != nil {
t.Fatalf("err: %v", err)
}
}
func CheckConsistent(envs []*RaftEnv, t *testing.T) {
limit := time.Now().Add(400 * time.Millisecond)
first := envs[0]
var err error
CHECK:
l1 := len(first.fsm.logs)
for i := 1; i < len(envs); i++ {
env := envs[i]
l2 := len(env.fsm.logs)
if l1 != l2 {
err = fmt.Errorf("log length mismatch %d %d", l1, l2)
goto ERR
}
for idx, log := range first.fsm.logs {
other := env.fsm.logs[idx]
if bytes.Compare(log, other) != 0 {
err = fmt.Errorf("log %d mismatch %v %v", idx, log, other)
goto ERR
}
}
}
return
ERR:
if time.Now().After(limit) {
t.Fatalf("%v", err)
}
time.Sleep(20 * time.Millisecond)
goto CHECK
}
// Tests Raft by creating a cluster, growing it to 5 nodes while
// causing various stressful conditions
func TestRaft_Integ(t *testing.T) {
CheckInteg(t)
conf := DefaultConfig()
conf.HeartbeatTimeout = 50 * time.Millisecond
conf.ElectionTimeout = 50 * time.Millisecond
conf.LeaderLeaseTimeout = 50 * time.Millisecond
conf.CommitTimeout = 5 * time.Millisecond
conf.SnapshotThreshold = 100
conf.TrailingLogs = 10
conf.EnableSingleNode = true
// Create a single node
env1 := MakeRaft(t, conf)
NoErr(WaitFor(env1, Leader), t)
// Do some commits
var futures []Future
for i := 0; i < 100; i++ {
futures = append(futures, env1.raft.Apply([]byte(fmt.Sprintf("test%d", i)), 0))
}
for _, f := range futures {
NoErr(WaitFuture(f, t), t)
log.Printf("[DEBUG] Applied %v", f)
}
// Do a snapshot
NoErr(WaitFuture(env1.raft.Snapshot(), t), t)
// Join a few nodes!
var envs []*RaftEnv
for i := 0; i < 4; i++ {
env := MakeRaft(t, conf)
addr := env.trans.LocalAddr()
NoErr(WaitFuture(env1.raft.AddPeer(addr), t), t)
envs = append(envs, env)
}
// Wait for a leader
leader, err := WaitForAny(Leader, append([]*RaftEnv{env1}, envs...))
NoErr(err, t)
// Do some more commits
futures = nil
for i := 0; i < 100; i++ {
futures = append(futures, leader.raft.Apply([]byte(fmt.Sprintf("test%d", i)), 0))
}
for _, f := range futures {
NoErr(WaitFuture(f, t), t)
log.Printf("[DEBUG] Applied %v", f)
}
// Shoot two nodes in the head!
rm1, rm2 := envs[0], envs[1]
rm1.Release()
rm2.Release()
envs = envs[2:]
time.Sleep(10 * time.Millisecond)
// Wait for a leader
leader, err = WaitForAny(Leader, append([]*RaftEnv{env1}, envs...))
NoErr(err, t)
// Do some more commits
futures = nil
for i := 0; i < 100; i++ {
futures = append(futures, leader.raft.Apply([]byte(fmt.Sprintf("test%d", i)), 0))
}
for _, f := range futures {
NoErr(WaitFuture(f, t), t)
log.Printf("[DEBUG] Applied %v", f)
}
// Join a few new nodes!
for i := 0; i < 2; i++ {
env := MakeRaft(t, conf)
addr := env.trans.LocalAddr()
NoErr(WaitFuture(leader.raft.AddPeer(addr), t), t)
envs = append(envs, env)
}
// Remove the old nodes
NoErr(WaitFuture(leader.raft.RemovePeer(rm1.raft.localAddr), t), t)
NoErr(WaitFuture(leader.raft.RemovePeer(rm2.raft.localAddr), t), t)
// Shoot the leader
env1.Release()
time.Sleep(3 * conf.HeartbeatTimeout)
// Wait for a leader
leader, err = WaitForAny(Leader, envs)
NoErr(err, t)
allEnvs := append([]*RaftEnv{env1}, envs...)
CheckConsistent(allEnvs, t)
if len(env1.fsm.logs) != 300 {
t.Fatalf("should apply 300 logs! %d", len(env1.fsm.logs))
}
for _, e := range envs {
e.Release()
}
}
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