/
server_redelivery_test.go
1325 lines (1211 loc) · 34.8 KB
/
server_redelivery_test.go
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// Copyright 2016-2018 The NATS 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 server
import (
"fmt"
"net"
"strings"
"sync"
"sync/atomic"
"testing"
"time"
natsdTest "github.com/nats-io/gnatsd/test"
"github.com/nats-io/go-nats"
"github.com/nats-io/go-nats-streaming"
)
func TestRedelivery(t *testing.T) {
s := runServer(t, clusterName)
defer s.Shutdown()
sc, err := stan.Connect(clusterName, clientName)
if err != nil {
t.Fatalf("Unexpected error on connect: %v", err)
}
defer sc.Close()
rch := make(chan bool)
cb := func(m *stan.Msg) {
if m.Redelivered {
m.Ack()
rch <- true
}
}
// Create a plain sub
if _, err := sc.Subscribe("foo", cb, stan.SetManualAckMode(),
stan.AckWait(ackWaitInMs(200))); err != nil {
t.Fatalf("Unexpected error on subscribe: %v", err)
}
// Send first message
if err := sc.Publish("foo", []byte("hello")); err != nil {
t.Fatalf("Unexpected error on publish: %v", err)
}
// Add a delay before the next message
time.Sleep(100 * time.Millisecond)
// Send second message
if err := sc.Publish("foo", []byte("hello")); err != nil {
t.Fatalf("Unexpected error on publish: %v", err)
}
subs := checkSubs(t, s, clientName, 1)
func(sub *subState) {
sub.RLock()
defer sub.RUnlock()
if sub.acksPending == nil || len(sub.acksPending) != 2 {
t.Fatalf("Expected to have two ackPending, got %v", len(sub.acksPending))
}
if sub.ackTimer == nil {
t.Fatalf("Expected timer to be set")
}
}(subs[0])
for i := 0; i < 2; i++ {
if err := Wait(rch); err != nil {
t.Fatalf("Messages not redelivered")
}
}
// Wait for another ackWait to check if timer is cleared
time.Sleep(250 * time.Millisecond)
// Check state
func(sub *subState) {
sub.RLock()
defer sub.RUnlock()
if len(sub.acksPending) != 0 {
t.Fatalf("Expected to have no ackPending, got %v", len(sub.acksPending))
}
if sub.ackTimer != nil {
t.Fatalf("Expected timer to be nil")
}
}(subs[0])
}
func TestMultipleRedeliveries(t *testing.T) {
s := runServer(t, clusterName)
defer s.Shutdown()
sc := NewDefaultConnection(t)
defer sc.Close()
dlvTimes := make(map[uint64]int64)
mu := &sync.Mutex{}
sent := 5
count := 0
ch := make(chan bool)
ackWait := int64(15 * time.Millisecond)
lowBound := int64(float64(ackWait) * 0.5)
highBound := int64(float64(ackWait) * 1.7)
errCh := make(chan error)
cb := func(m *stan.Msg) {
now := time.Now().UnixNano()
mu.Lock()
lastDlv := dlvTimes[m.Sequence]
if lastDlv != 0 && (now < lastDlv-lowBound || now > lastDlv+highBound) {
if len(errCh) == 0 {
errCh <- fmt.Errorf("Message %d redelivered %v instead of [%v,%v] after last (re)delivery",
m.Sequence, time.Duration(now-lastDlv), time.Duration(lowBound), time.Duration(highBound))
mu.Unlock()
return
}
} else {
dlvTimes[m.Sequence] = now
}
if m.Redelivered {
count++
if count == 2*sent*4 {
// we want at least 4 redeliveries
ch <- true
}
}
mu.Unlock()
}
// Create regular subscriber
if _, err := sc.Subscribe("foo", cb,
stan.SetManualAckMode(),
stan.AckWait(ackWaitInMs(15))); err != nil {
t.Fatalf("Unexpected error on subscribe: %v", err)
}
// And two queue subscribers from same group
for i := 0; i < 2; i++ {
if _, err := sc.QueueSubscribe("foo", "bar", cb,
stan.SetManualAckMode(),
stan.AckWait(ackWaitInMs(15))); err != nil {
t.Fatalf("Unexpected error on subscribe: %v", err)
}
}
for i := 0; i < 5; i++ {
if err := sc.Publish("foo", []byte("hello")); err != nil {
t.Fatalf("Unexpected error on publish: %v", err)
}
time.Sleep(20 * time.Millisecond)
}
// Wait for all redeliveries or errors
select {
case e := <-errCh:
t.Fatal(e)
case <-ch: // all good
case <-time.After(5 * time.Second):
t.Fatal("Did not get all our redeliveries")
}
}
func TestRedeliveryRace(t *testing.T) {
s := runServer(t, clusterName)
defer s.Shutdown()
sc := NewDefaultConnection(t)
defer sc.Close()
sub, err := sc.Subscribe("foo", func(_ *stan.Msg) {}, stan.AckWait(ackWaitInMs(15)), stan.SetManualAckMode())
if err != nil {
t.Fatalf("Unexpected error on subscribe: %v", err)
}
if err := sc.Publish("foo", []byte("hello")); err != nil {
t.Fatalf("Unexpected error on publish: %v", err)
}
time.Sleep(15 * time.Millisecond)
sub.Unsubscribe()
}
func TestQueueRedelivery(t *testing.T) {
s := runServer(t, clusterName)
defer s.Shutdown()
sc, err := stan.Connect(clusterName, clientName)
if err != nil {
t.Fatalf("Unexpected error on connect: %v", err)
}
defer sc.Close()
rch := make(chan bool)
cb := func(m *stan.Msg) {
if m.Redelivered {
m.Ack()
rch <- true
}
}
// Create a queue subscriber
if _, err := sc.QueueSubscribe("foo", "group", cb, stan.SetManualAckMode(),
stan.AckWait(ackWaitInMs(50))); err != nil {
t.Fatalf("Unexpected error on subscribe: %v", err)
}
// Send first message
if err := sc.Publish("foo", []byte("hello")); err != nil {
t.Fatalf("Unexpected error on publish: %v", err)
}
// Add a delay before the next message
time.Sleep(25 * time.Millisecond)
// Send second message
if err := sc.Publish("foo", []byte("hello")); err != nil {
t.Fatalf("Unexpected error on publish: %v", err)
}
subs := checkSubs(t, s, clientName, 1)
func(sub *subState) {
sub.RLock()
defer sub.RUnlock()
if sub.acksPending == nil || len(sub.acksPending) != 2 {
t.Fatalf("Expected to have two ackPending, got %v", len(sub.acksPending))
}
if sub.ackTimer == nil {
t.Fatalf("Expected timer to be set")
}
}(subs[0])
for i := 0; i < 2; i++ {
if err := Wait(rch); err != nil {
t.Fatalf("Messages not redelivered")
}
}
// Wait for another ackWait to check if timer is cleared
time.Sleep(75 * time.Millisecond)
// Check state
func(sub *subState) {
sub.RLock()
defer sub.RUnlock()
if len(sub.acksPending) != 0 {
t.Fatalf("Expected to have no ackPending, got %v", len(sub.acksPending))
}
if sub.ackTimer != nil {
t.Fatalf("Expected timer to be nil")
}
}(subs[0])
}
func TestDurableRedelivery(t *testing.T) {
s := runServer(t, clusterName)
defer s.Shutdown()
ch := make(chan bool)
rch := make(chan bool)
errors := make(chan error, 5)
count := 0
cb := func(m *stan.Msg) {
count++
switch count {
case 1:
ch <- true
case 2:
rch <- true
default:
errors <- fmt.Errorf("Unexpected message %v", m)
}
}
sc := NewDefaultConnection(t)
defer sc.Close()
_, err := sc.Subscribe("foo", cb, stan.DurableName("dur"), stan.SetManualAckMode())
if err != nil {
t.Fatalf("Unexpected error on subscribe: %v", err)
}
if err := sc.Publish("foo", []byte("hello")); err != nil {
t.Fatalf("Unexpected error on publish: %v", err)
}
// Wait for first message to be received
if err := Wait(ch); err != nil {
t.Fatal("Failed to receive first message")
}
// Report error if any
if len(errors) > 0 {
t.Fatalf("%v", <-errors)
}
// Close the client
sc.Close()
// Restart client
sc2 := NewDefaultConnection(t)
defer sc2.Close()
sub2, err := sc2.Subscribe("foo", cb, stan.DurableName("dur"), stan.SetManualAckMode())
if err != nil {
t.Fatalf("Unexpected error on subscribe: %v", err)
}
defer sub2.Unsubscribe()
// Wait for redelivered message
if err := Wait(rch); err != nil {
t.Fatal("Messages were not redelivered to durable")
}
// Report error if any
if len(errors) > 0 {
t.Fatalf("%v", <-errors)
}
}
func testStalledRedelivery(t *testing.T, typeSub string) {
cleanupDatastore(t)
defer cleanupDatastore(t)
opts := getTestDefaultOptsForPersistentStore()
s := runServerWithOpts(t, opts, nil)
defer shutdownRestartedServerOnTestExit(&s)
sc, nc := createConnectionWithNatsOpts(t, clientName,
nats.ReconnectWait(100*time.Millisecond))
defer nc.Close()
defer sc.Close()
recv := int32(0)
rdlv := int32(0)
toSend := int32(1)
numSubs := 1
ch := make(chan bool)
rch := make(chan bool, 2)
errors := make(chan error)
cb := func(m *stan.Msg) {
if !m.Redelivered {
r := atomic.AddInt32(&recv, 1)
if r > toSend {
errors <- fmt.Errorf("Should have received only 1 message, got %v", r)
return
} else if r == toSend {
ch <- true
}
} else {
m.Ack()
// We have received our redelivered message(s), we're done
if atomic.AddInt32(&rdlv, 1) == toSend {
rch <- true
}
}
}
if typeSub == "queue" {
// Create 2 queue subs with manual ack mode and maxInFlight of 1,
// and redelivery delay of 1 sec.
if _, err := sc.QueueSubscribe("foo", "group", cb,
stan.SetManualAckMode(), stan.MaxInflight(1),
stan.AckWait(ackWaitInMs(15))); err != nil {
t.Fatalf("Unexpected error on subscribe: %v", err)
}
if _, err := sc.QueueSubscribe("foo", "group", cb,
stan.SetManualAckMode(), stan.MaxInflight(1),
stan.AckWait(ackWaitInMs(15))); err != nil {
t.Fatalf("Unexpected error on subscribe: %v", err)
}
numSubs = 2
toSend = 2
} else if typeSub == "durable" {
// Create a durable with manual ack mode and maxInFlight of 1,
// and redelivery delay of 1 sec.
if _, err := sc.Subscribe("foo", cb, stan.DurableName("dur"),
stan.SetManualAckMode(), stan.MaxInflight(1),
stan.AckWait(ackWaitInMs(15))); err != nil {
t.Fatalf("Unexpected error on subscribe: %v", err)
}
} else {
// Create a sub with manual ack mode and maxInFlight of 1,
// and redelivery delay of 1 sec.
if _, err := sc.Subscribe("foo", cb, stan.SetManualAckMode(),
stan.MaxInflight(1), stan.AckWait(ackWaitInMs(15))); err != nil {
t.Fatalf("Unexpected error on subscribe: %v", err)
}
}
// Wait for subscriber to be registered before starting publish
waitForNumSubs(t, s, clientName, numSubs)
// Send
for i := int32(0); i < toSend; i++ {
msg := fmt.Sprintf("msg_%d", (i + 1))
if err := sc.Publish("foo", []byte(msg)); err != nil {
t.Fatalf("Unexpected error on publish: %v", err)
}
}
// Make sure the message is received
if err := Wait(ch); err != nil {
t.Fatal("Did not get our message")
}
// Wait for completion or error
select {
case <-rch:
break
case e := <-errors:
t.Fatalf("%v", e)
case <-time.After(5 * time.Second):
t.Fatal("Did not get our redelivered message")
}
// Same test but with server restart.
atomic.StoreInt32(&recv, 0)
atomic.StoreInt32(&rdlv, 0)
// Send
for i := int32(0); i < toSend; i++ {
msg := fmt.Sprintf("msg_%d", (i + 1))
if err := sc.Publish("foo", []byte(msg)); err != nil {
t.Fatalf("Unexpected error on publish: %v", err)
}
}
// Make sure the message is received
if err := Wait(ch); err != nil {
t.Fatal("Did not get our message")
}
// Restart server
s.Shutdown()
s = runServerWithOpts(t, opts, nil)
// Wait for completion or error
select {
case <-rch:
break
case e := <-errors:
t.Fatalf("%v", e)
case <-time.After(5 * time.Second):
t.Fatal("Did not get our redelivered message")
}
}
func TestPersistentStoreStalledRedelivery(t *testing.T) {
testStalledRedelivery(t, "sub")
}
func TestPersistentStoreStalledQueueRedelivery(t *testing.T) {
testStalledRedelivery(t, "queue")
}
func TestPersistentStoreStalledDurableRedelivery(t *testing.T) {
testStalledRedelivery(t, "durable")
}
func TestPersistentStoreRedeliveredPerSub(t *testing.T) {
cleanupDatastore(t)
defer cleanupDatastore(t)
opts := getTestDefaultOptsForPersistentStore()
s := runServerWithOpts(t, opts, nil)
defer shutdownRestartedServerOnTestExit(&s)
sc, nc := createConnectionWithNatsOpts(t, clientName,
nats.ReconnectWait(100*time.Millisecond))
defer nc.Close()
defer sc.Close()
// Send one message on "foo"
if err := sc.Publish("foo", []byte("hello")); err != nil {
t.Fatalf("Unexpected error on publish: %v", err)
}
// Restart server
s.Shutdown()
s = runServerWithOpts(t, opts, nil)
// Message should not be marked as redelivered
cs := channelsGet(t, s.channels, "foo")
if m := msgStoreFirstMsg(t, cs.store.Msgs); m == nil || m.Redelivered {
t.Fatal("Message should have been recovered as not redelivered")
}
first := make(chan bool)
ch := make(chan bool)
rch := make(chan bool)
errors := make(chan error, 10)
delivered := int32(0)
redelivered := int32(0)
var sub1 stan.Subscription
cb := func(m *stan.Msg) {
if m.Redelivered && m.Sub == sub1 {
m.Ack()
if atomic.AddInt32(&redelivered, 1) == 1 {
rch <- true
}
} else if !m.Redelivered {
d := atomic.AddInt32(&delivered, 1)
switch d {
case 1:
first <- true
case 2:
ch <- true
}
} else {
errors <- fmt.Errorf("Unexpected redelivered message to sub1")
}
}
// Start a subscriber that consumes the message but does not ack it.
sub1, err := sc.Subscribe("foo", cb, stan.DeliverAllAvailable(),
stan.SetManualAckMode(), stan.AckWait(ackWaitInMs(15)))
if err != nil {
t.Fatalf("Unexpected error on subscribe: %v", err)
}
// Wait for 1st msg to be received
if err := Wait(first); err != nil {
t.Fatal("Did not get our first message")
}
// Restart server
s.Shutdown()
s = runServerWithOpts(t, opts, nil)
// Client should have been recovered
checkClients(t, s, 1)
// There should be 1 subscription
checkSubs(t, s, clientName, 1)
// Now start a second subscriber that will receive the old message
if _, err := sc.Subscribe("foo", cb, stan.DeliverAllAvailable()); err != nil {
t.Fatalf("Unexpected error on subscribe: %v", err)
}
// Wait for that message to be received.
if err := Wait(ch); err != nil {
t.Fatal("Did not get our messages")
}
// Wait for the redelivered message.
if err := Wait(rch); err != nil {
t.Fatal("Did not get our redelivered message")
}
// Report error if any
if len(errors) > 0 {
t.Fatalf("%v", <-errors)
}
// There should be only 1 redelivered message
if c := atomic.LoadInt32(&redelivered); c != 1 {
t.Fatalf("Expected 1 redelivered message, got %v", c)
}
}
func TestPersistentStoreRedeliveryCbPerSub(t *testing.T) {
cleanupDatastore(t)
defer cleanupDatastore(t)
opts := getTestDefaultOptsForPersistentStore()
s := runServerWithOpts(t, opts, nil)
defer shutdownRestartedServerOnTestExit(&s)
sc, nc := createConnectionWithNatsOpts(t, clientName,
nats.ReconnectWait(100*time.Millisecond))
defer nc.Close()
defer sc.Close()
// Send one message on "foo"
if err := sc.Publish("foo", []byte("hello")); err != nil {
t.Fatalf("Unexpected error on publish: %v", err)
}
rch := make(chan bool)
errors := make(chan error, 10)
sub1Redel := int32(0)
sub2Redel := int32(0)
var sub1 stan.Subscription
var sub2 stan.Subscription
cb := func(m *stan.Msg) {
if m.Redelivered {
m.Ack()
}
if m.Redelivered {
if m.Sub == sub1 {
if atomic.AddInt32(&sub1Redel, 1) > 1 {
errors <- fmt.Errorf("More than one redeliverd msg for sub1")
return
}
} else if m.Sub == sub2 {
if atomic.AddInt32(&sub2Redel, 1) > 1 {
errors <- fmt.Errorf("More than one redeliverd msg for sub1")
return
}
} else {
errors <- fmt.Errorf("Redelivered msg for unknown subscription")
}
}
s1 := atomic.LoadInt32(&sub1Redel)
s2 := atomic.LoadInt32(&sub2Redel)
total := s1 + s2
if total == 2 {
rch <- true
}
}
// Start 2 subscribers that consume the message but do not ack it.
var err error
if sub1, err = sc.Subscribe("foo", cb, stan.DeliverAllAvailable(),
stan.SetManualAckMode(), stan.AckWait(ackWaitInMs(15))); err != nil {
t.Fatalf("Unexpected error on subscribe: %v", err)
}
if sub2, err = sc.Subscribe("foo", cb, stan.DeliverAllAvailable(),
stan.SetManualAckMode(), stan.AckWait(ackWaitInMs(15))); err != nil {
t.Fatalf("Unexpected error on subscribe: %v", err)
}
// Make sure the messages are added to the subscriptions before shutting down.
waitForCount(t, 2, func() (string, int) {
subs := s.clients.getSubs(clientName)
good := 0
for _, sub := range subs {
sub.Lock()
if len(sub.acksPending) == 1 {
good++
}
}
return "pending message per sub", good
})
// Restart server
s.Shutdown()
s = runServerWithOpts(t, opts, nil)
// Client should have been recovered
checkClients(t, s, 1)
// There should be 2 subscriptions
checkSubs(t, s, clientName, 2)
// Wait for all redelivered messages.
select {
case e := <-errors:
t.Fatalf("%v", e)
break
case <-rch:
break
case <-time.After(5 * time.Second):
t.Fatal("Did not get our redelivered messages")
}
}
func TestPersistentStorePersistMsgRedeliveredToDifferentQSub(t *testing.T) {
cleanupDatastore(t)
defer cleanupDatastore(t)
opts := getTestDefaultOptsForPersistentStore()
s := runServerWithOpts(t, opts, nil)
defer shutdownRestartedServerOnTestExit(&s)
var err error
var sub2 stan.Subscription
errs := make(chan error, 10)
sub2Recv := make(chan bool)
cb := func(m *stan.Msg) {
if m.Redelivered {
if m.Sub != sub2 {
errs <- fmt.Errorf("Expected redelivered msg to be sent to sub2")
return
}
sub2Recv <- true
}
}
sc, nc := createConnectionWithNatsOpts(t, clientName,
nats.ReconnectWait(100*time.Millisecond))
defer nc.Close()
defer sc.Close()
// Create two queue subscribers with manual ackMode that will
// not ack the message.
if _, err := sc.QueueSubscribe("foo", "g1", cb, stan.AckWait(ackWaitInMs(15)),
stan.SetManualAckMode()); err != nil {
t.Fatalf("Unexpected error on subscribe: %v", err)
}
sub2, err = sc.QueueSubscribe("foo", "g1", cb, stan.AckWait(ackWaitInMs(150)),
stan.SetManualAckMode())
if err != nil {
t.Fatalf("Unexpected error on subscribe: %v", err)
}
// Make sure these are registered.
waitForNumSubs(t, s, clientName, 2)
// Send a message
if err := sc.Publish("foo", []byte("msg")); err != nil {
t.Fatalf("Unexpected error on publish: %v", err)
}
// Wait for sub2 to receive the message.
select {
case <-sub2Recv:
waitForAcks(t, s, clientName, 1, 0)
break
case e := <-errs:
t.Fatalf("%v", e)
case <-time.After(5 * time.Second):
t.Fatal("Did not get out message")
}
// Stop server
s.Shutdown()
s = runServerWithOpts(t, opts, nil)
// Get subs
subs := s.clients.getSubs(clientName)
if len(subs) != 2 {
t.Fatalf("Expected 2 subscriptions to be recovered, got %v", len(subs))
}
// Message should be in sub2's ackPending
for _, s := range subs {
s.RLock()
na := len(s.acksPending)
sID := s.ID
s.RUnlock()
if sID == 1 && na != 0 {
t.Fatal("Unexpected un-acknowledged message for sub1")
} else if sID == 2 && na != 1 {
t.Fatal("Unacknowledged message should have been recovered for sub2")
}
}
}
func TestPersistentStoreAckMsgRedeliveredToDifferentQueueSub(t *testing.T) {
cleanupDatastore(t)
defer cleanupDatastore(t)
opts := getTestDefaultOptsForPersistentStore()
s := runServerWithOpts(t, opts, nil)
defer shutdownRestartedServerOnTestExit(&s)
var (
err error
sub2 stan.Subscription
sub2Mu sync.Mutex
)
errs := make(chan error, 10)
sub2Recv := make(chan bool)
redelivered := int32(0)
trackDelivered := int32(0)
cb := func(m *stan.Msg) {
if m.Redelivered {
if atomic.AddInt32(&redelivered, 1) != 1 {
errs <- fmt.Errorf("Message redelivered after restart")
return
}
sub2Mu.Lock()
isSub2 := m.Sub == sub2
sub2Mu.Unlock()
if !isSub2 {
// We want the message to be redelivered to sub2, so wait
// for that to happen
return
}
sub2Recv <- true
} else {
if atomic.LoadInt32(&trackDelivered) == 1 {
errs <- fmt.Errorf("Unexpected non redelivered message: %v", m)
return
}
}
}
sc, nc := createConnectionWithNatsOpts(t, clientName,
nats.ReconnectWait(100*time.Millisecond))
defer nc.Close()
defer sc.Close()
// Create a queue subscriber with manual ackMode that will
// not ack the message.
if _, err := sc.QueueSubscribe("foo", "g1", cb, stan.AckWait(ackWaitInMs(100)),
stan.SetManualAckMode()); err != nil {
t.Fatalf("Unexpected error on subscribe: %v", err)
}
waitForNumSubs(t, s, clientName, 1)
// Send a message that we know is going to go to the first (and only)
// queue sub that will not ack this message
if err := sc.Publish("foo", []byte("msg")); err != nil {
t.Fatalf("Unexpected error on publish: %v", err)
}
sub2Mu.Lock()
// Create this subscriber that will receive and ack the message
sub2, err = sc.QueueSubscribe("foo", "g1", cb)
sub2Mu.Unlock()
if err != nil {
t.Fatalf("Unexpected error on subscribe: %v", err)
}
// Make sure these are registered.
waitForNumSubs(t, s, clientName, 2)
// Wait for sub2 to receive the message.
select {
case <-sub2Recv:
break
case e := <-errs:
t.Fatalf("%v", e)
case <-time.After(5 * time.Second):
t.Fatal("Did not get out message")
}
// Wait for msg sent to sub2 to be ack'ed
waitForAcks(t, s, clientName, 2, 0)
// Stop server
s.Shutdown()
// Track unexpected delivery of non redelivered message
atomic.StoreInt32(&trackDelivered, 1)
// Restart server
s = runServerWithOpts(t, opts, nil)
// Get subs
subs := s.clients.getSubs(clientName)
if len(subs) != 2 {
t.Fatalf("Expected 2 subscriptions to be recovered, got %v", len(subs))
}
// No ackPending should be recovered
for _, s := range subs {
s.RLock()
na := len(s.acksPending)
sID := s.ID
s.RUnlock()
if na != 0 {
t.Fatalf("Unexpected un-acknowledged message for sub: %v", sID)
}
}
// Wait for possible redelivery
select {
case e := <-errs:
t.Fatalf("%v", e)
case <-time.After(30 * time.Millisecond):
break
}
}
func TestDurableQueueSubRedeliveryOnRejoin(t *testing.T) {
s := runServer(t, clusterName)
defer s.Shutdown()
sc := NewDefaultConnection(t)
defer sc.Close()
total := 100
for i := 0; i < total; i++ {
if err := sc.Publish("foo", []byte("msg1")); err != nil {
t.Fatalf("Unexpected error on publish: %v", err)
}
}
dlv := 0
dch := make(chan bool)
cb1 := func(m *stan.Msg) {
if !m.Redelivered {
dlv++
if dlv == total {
dch <- true
}
}
}
rdlv := 0
rdch := make(chan bool)
sigCh := make(chan bool)
signaled := false
cb2 := func(m *stan.Msg) {
if m.Redelivered && int(m.Sequence) <= total {
rdlv++
if rdlv == total {
rdch <- true
}
} else if !m.Redelivered && int(m.Sequence) > total {
if !signaled {
signaled = true
sigCh <- true
}
}
}
// Create a durable queue subscriber with manual ack
if _, err := sc.QueueSubscribe("foo", "group", cb1,
stan.DeliverAllAvailable(),
stan.SetManualAckMode(),
stan.MaxInflight(total),
stan.DurableName("qsub")); err != nil {
t.Fatalf("Unexpected error on subscribe: %v", err)
}
// Check group
checkQueueGroupSize(t, s, "foo", "qsub:group", true, 1)
// Wait for it to receive the message
if err := Wait(dch); err != nil {
t.Fatal("Did not get our message")
}
// Create new one
sc2, err := stan.Connect(clusterName, "sc2cid")
if err != nil {
t.Fatalf("Unexpected error during connect: %v", err)
}
defer sc2.Close()
// Rejoin the group
if _, err := sc2.QueueSubscribe("foo", "group", cb2,
stan.DeliverAllAvailable(),
stan.SetManualAckMode(),
stan.AckWait(ackWaitInMs(15)),
stan.DurableName("qsub")); err != nil {
t.Fatalf("Unexpected error on subscribe: %v", err)
}
// Check group
checkQueueGroupSize(t, s, "foo", "qsub:group", true, 2)
// Send one more message, which should go to sub2
if err := sc.Publish("foo", []byte("last")); err != nil {
t.Fatalf("Unexpected error on publish: %v", err)
}
// Wait for it to be received
if err := Wait(sigCh); err != nil {
t.Fatal("Did not get our message")
}
// Close connection
sc.Close()
// Check group
checkQueueGroupSize(t, s, "foo", "qsub:group", true, 1)
// Message should be redelivered
if err := Wait(rdch); err != nil {
t.Fatal("Did not get our redelivered message")
}
}
func TestPersistentStoreDurableQueueSubRedeliveryOnRejoin(t *testing.T) {
cleanupDatastore(t)
defer cleanupDatastore(t)
opts := getTestDefaultOptsForPersistentStore()
s := runServerWithOpts(t, opts, nil)
defer shutdownRestartedServerOnTestExit(&s)
sc := NewDefaultConnection(t)
defer sc.Close()
if err := sc.Publish("foo", []byte("msg1")); err != nil {
t.Fatalf("Unexpected error on publish: %v", err)
}
ch := make(chan bool)
count := 0
cb := func(m *stan.Msg) {
count++
if (count == 1 && !m.Redelivered) || (count == 2 && m.Redelivered) {
ch <- true
}
}
// Create a durable queue subscriber with manual ack
if _, err := sc.QueueSubscribe("foo", "group", cb,
stan.DeliverAllAvailable(),
stan.SetManualAckMode(),
stan.DurableName("qsub")); err != nil {
t.Fatalf("Unexpected error on subscribe: %v", err)
}
// Check group
checkQueueGroupSize(t, s, "foo", "qsub:group", true, 1)
// Wait for it to receive the message
if err := Wait(ch); err != nil {
t.Fatal("Did not get our message")
}
// Close connection
sc.Close()
// Stop server
s.Shutdown()
// Restart it
s = runServerWithOpts(t, opts, nil)
// Connect
sc = NewDefaultConnection(t)
defer sc.Close()
// Rejoin the group
if _, err := sc.QueueSubscribe("foo", "group", cb,
stan.DeliverAllAvailable(),
stan.AckWait(ackWaitInMs(15)),
stan.DurableName("qsub")); err != nil {
t.Fatalf("Unexpected error on subscribe: %v", err)
}
// Check group
checkQueueGroupSize(t, s, "foo", "qsub:group", true, 1)
// Message should be redelivered
if err := Wait(ch); err != nil {
t.Fatal("Did not get our message")
}
}
func TestDroppedMessagesOnRedelivery(t *testing.T) {
opts := GetDefaultOptions()
opts.MaxMsgs = 3
s := runServerWithOpts(t, opts, nil)
defer s.Shutdown()
sc := NewDefaultConnection(t)
defer sc.Close()
// Produce 3 messages
for i := 0; i < 3; i++ {
if err := sc.Publish("foo", []byte("hello")); err != nil {
t.Fatalf("Unexpected error on publish: %v", err)
}
}
// Start a subscriber with manual ack, don't ack the first
// delivered messages.