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state_test.go
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state_test.go
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package memberlist
import (
"bytes"
"fmt"
"net"
"testing"
"time"
)
func HostMemberlist(host string, t *testing.T, f func(*Config)) *Memberlist {
c := DefaultLANConfig()
c.Name = host
c.BindAddr = host
if f != nil {
f(c)
}
m, err := newMemberlist(c)
if err != nil {
t.Fatalf("failed to get memberlist: %s", err)
}
return m
}
func TestMemberList_Probe(t *testing.T) {
addr1 := getBindAddr()
addr2 := getBindAddr()
m1 := HostMemberlist(addr1.String(), t, func(c *Config) {
c.ProbeTimeout = time.Millisecond
c.ProbeInterval = 10 * time.Millisecond
})
m2 := HostMemberlist(addr2.String(), t, nil)
a1 := alive{
Node: addr1.String(),
Addr: []byte(addr1),
Port: uint16(m1.config.BindPort),
Incarnation: 1,
}
m1.aliveNode(&a1, nil, true)
a2 := alive{
Node: addr2.String(),
Addr: []byte(addr2),
Port: uint16(m2.config.BindPort),
Incarnation: 1,
}
m1.aliveNode(&a2, nil, false)
// should ping addr2
m1.probe()
// Should not be marked suspect
n := m1.nodeMap[addr2.String()]
if n.State != stateAlive {
t.Fatalf("Expect node to be alive")
}
// Should increment seqno
if m1.sequenceNum != 1 {
t.Fatalf("bad seqno %v", m2.sequenceNum)
}
}
func TestMemberList_ProbeNode_Suspect(t *testing.T) {
addr1 := getBindAddr()
addr2 := getBindAddr()
addr3 := getBindAddr()
addr4 := getBindAddr()
ip1 := []byte(addr1)
ip2 := []byte(addr2)
ip3 := []byte(addr3)
ip4 := []byte(addr4)
m1 := HostMemberlist(addr1.String(), t, func(c *Config) {
c.ProbeTimeout = time.Millisecond
c.ProbeInterval = 10 * time.Millisecond
})
m2 := HostMemberlist(addr2.String(), t, nil)
m3 := HostMemberlist(addr3.String(), t, nil)
a1 := alive{Node: addr1.String(), Addr: ip1, Port: 7946, Incarnation: 1}
m1.aliveNode(&a1, nil, true)
a2 := alive{Node: addr2.String(), Addr: ip2, Port: 7946, Incarnation: 1}
m1.aliveNode(&a2, nil, false)
a3 := alive{Node: addr3.String(), Addr: ip3, Port: 7946, Incarnation: 1}
m1.aliveNode(&a3, nil, false)
a4 := alive{Node: addr4.String(), Addr: ip4, Port: 7946, Incarnation: 1}
m1.aliveNode(&a4, nil, false)
n := m1.nodeMap[addr4.String()]
m1.probeNode(n)
// Should be marked suspect.
if n.State != stateSuspect {
t.Fatalf("Expect node to be suspect")
}
time.Sleep(10 * time.Millisecond)
// One of the peers should have attempted an indirect probe.
if m2.sequenceNum != 1 && m3.sequenceNum != 1 {
t.Fatalf("bad seqnos %v, %v", m2.sequenceNum, m3.sequenceNum)
}
}
func TestMemberList_ProbeNode_Suspect_Dogpile(t *testing.T) {
cases := []struct {
numPeers int
confirmations int
expected time.Duration
}{
{1, 0, 500 * time.Millisecond}, // n=2, k=3 (max timeout disabled)
{2, 0, 500 * time.Millisecond}, // n=3, k=3
{3, 0, 500 * time.Millisecond}, // n=4, k=3
{4, 0, 1000 * time.Millisecond}, // n=5, k=3 (max timeout starts to take effect)
{5, 0, 1000 * time.Millisecond}, // n=6, k=3
{5, 1, 750 * time.Millisecond}, // n=6, k=3 (confirmations start to lower timeout)
{5, 2, 604 * time.Millisecond}, // n=6, k=3
{5, 3, 500 * time.Millisecond}, // n=6, k=3 (timeout driven to nominal value)
{5, 4, 500 * time.Millisecond}, // n=6, k=3
}
for i, c := range cases {
// Create the main memberlist under test.
addr := getBindAddr()
m := HostMemberlist(addr.String(), t, func(c *Config) {
c.ProbeTimeout = time.Millisecond
c.ProbeInterval = 100 * time.Millisecond
c.SuspicionMult = 5
c.SuspicionMaxTimeoutMult = 2
})
a := alive{Node: addr.String(), Addr: []byte(addr), Port: 7946, Incarnation: 1}
m.aliveNode(&a, nil, true)
// Make all but one peer be an real, alive instance.
var peers []*Memberlist
for j := 0; j < c.numPeers-1; j++ {
peerAddr := getBindAddr()
peers = append(peers, HostMemberlist(peerAddr.String(), t, nil))
a = alive{Node: peerAddr.String(), Addr: []byte(peerAddr), Port: 7946, Incarnation: 1}
m.aliveNode(&a, nil, false)
}
// Just use a bogus address for the last peer so it doesn't respond
// to pings, but tell the memberlist it's alive.
badPeerAddr := getBindAddr()
a = alive{Node: badPeerAddr.String(), Addr: []byte(badPeerAddr), Port: 7946, Incarnation: 1}
m.aliveNode(&a, nil, false)
// Force a probe, which should start us into the suspect state.
n := m.nodeMap[badPeerAddr.String()]
m.probeNode(n)
if n.State != stateSuspect {
t.Fatalf("case %d: expected node to be suspect", i)
}
// Add the requested number of confirmations.
for j := 0; j < c.confirmations; j++ {
from := fmt.Sprintf("peer%d", j)
s := suspect{Node: badPeerAddr.String(), Incarnation: 1, From: from}
m.suspectNode(&s)
}
// Wait until right before the timeout and make sure the timer
// hasn't fired.
fudge := 25 * time.Millisecond
time.Sleep(c.expected - fudge)
if n.State != stateSuspect {
t.Fatalf("case %d: expected node to still be suspect", i)
}
// Wait through the timeout and a little after to make sure the
// timer fires.
time.Sleep(2 * fudge)
if n.State != stateDead {
t.Fatalf("case %d: expected node to be dead", i)
}
}
}
/*
func TestMemberList_ProbeNode_FallbackTCP(t *testing.T) {
addr1 := getBindAddr()
addr2 := getBindAddr()
addr3 := getBindAddr()
addr4 := getBindAddr()
ip1 := []byte(addr1)
ip2 := []byte(addr2)
ip3 := []byte(addr3)
ip4 := []byte(addr4)
var probeTimeMax time.Duration
m1 := HostMemberlist(addr1.String(), t, func(c *Config) {
c.ProbeTimeout = 10 * time.Millisecond
c.ProbeInterval = 200 * time.Millisecond
probeTimeMax = c.ProbeInterval + 20*time.Millisecond
})
defer m1.Shutdown()
m2 := HostMemberlist(addr2.String(), t, nil)
defer m2.Shutdown()
m3 := HostMemberlist(addr3.String(), t, nil)
defer m3.Shutdown()
m4 := HostMemberlist(addr4.String(), t, nil)
defer m4.Shutdown()
a1 := alive{Node: addr1.String(), Addr: ip1, Port: 7946, Incarnation: 1}
m1.aliveNode(&a1, nil, true)
a2 := alive{Node: addr2.String(), Addr: ip2, Port: 7946, Incarnation: 1}
m1.aliveNode(&a2, nil, false)
a3 := alive{Node: addr3.String(), Addr: ip3, Port: 7946, Incarnation: 1}
m1.aliveNode(&a3, nil, false)
// Make sure m4 is configured with the same protocol version as m1 so
// the TCP fallback behavior is enabled.
a4 := alive{
Node: addr4.String(),
Addr: ip4,
Port: 7946,
Incarnation: 1,
Vsn: []uint8{
ProtocolVersionMin,
ProtocolVersionMax,
m1.config.ProtocolVersion,
m1.config.DelegateProtocolMin,
m1.config.DelegateProtocolMax,
m1.config.DelegateProtocolVersion,
},
}
m1.aliveNode(&a4, nil, false)
// Isolate m4 from UDP traffic by re-opening its listener on the wrong
// port. This should force the TCP fallback path to be used.
var err error
if err = m4.udpListener.Close(); err != nil {
t.Fatalf("err: %v", err)
}
udpAddr := &net.UDPAddr{IP: ip4, Port: 9999}
if m4.udpListener, err = net.ListenUDP("udp", udpAddr); err != nil {
t.Fatalf("err: %v", err)
}
// Have node m1 probe m4.
n := m1.nodeMap[addr4.String()]
startProbe := time.Now()
m1.probeNode(n)
probeTime := time.Now().Sub(startProbe)
// Should be marked alive because of the TCP fallback ping.
if n.State != stateAlive {
t.Fatalf("expect node to be alive")
}
// Make sure TCP activity completed in a timely manner.
if probeTime > probeTimeMax {
t.Fatalf("took to long to probe, %9.6f", probeTime.Seconds())
}
// Confirm at least one of the peers attempted an indirect probe.
time.Sleep(probeTimeMax)
if m2.sequenceNum != 1 && m3.sequenceNum != 1 {
t.Fatalf("bad seqnos %v, %v", m2.sequenceNum, m3.sequenceNum)
}
// Now shutdown all inbound TCP traffic to make sure the TCP fallback
// path properly fails when the node is really unreachable.
if err = m4.tcpListener.Close(); err != nil {
t.Fatalf("err: %v", err)
}
tcpAddr := &net.TCPAddr{IP: ip4, Port: 9999}
if m4.tcpListener, err = net.ListenTCP("tcp", tcpAddr); err != nil {
t.Fatalf("err: %v", err)
}
// Probe again, this time there should be no contact.
startProbe = time.Now()
m1.probeNode(n)
probeTime = time.Now().Sub(startProbe)
// Node should be reported suspect.
if n.State != stateSuspect {
t.Fatalf("expect node to be suspect")
}
// Make sure TCP activity didn't cause us to wait too long before
// timing out.
if probeTime > probeTimeMax {
t.Fatalf("took to long to probe, %9.6f", probeTime.Seconds())
}
// Confirm at least one of the peers attempted an indirect probe.
time.Sleep(probeTimeMax)
if m2.sequenceNum != 2 && m3.sequenceNum != 2 {
t.Fatalf("bad seqnos %v, %v", m2.sequenceNum, m3.sequenceNum)
}
}
func TestMemberList_ProbeNode_FallbackTCP_Disabled(t *testing.T) {
addr1 := getBindAddr()
addr2 := getBindAddr()
addr3 := getBindAddr()
addr4 := getBindAddr()
ip1 := []byte(addr1)
ip2 := []byte(addr2)
ip3 := []byte(addr3)
ip4 := []byte(addr4)
var probeTimeMax time.Duration
m1 := HostMemberlist(addr1.String(), t, func(c *Config) {
c.ProbeTimeout = 10 * time.Millisecond
c.ProbeInterval = 200 * time.Millisecond
probeTimeMax = c.ProbeInterval + 20*time.Millisecond
})
defer m1.Shutdown()
m2 := HostMemberlist(addr2.String(), t, nil)
defer m2.Shutdown()
m3 := HostMemberlist(addr3.String(), t, nil)
defer m3.Shutdown()
m4 := HostMemberlist(addr4.String(), t, nil)
defer m4.Shutdown()
a1 := alive{Node: addr1.String(), Addr: ip1, Port: 7946, Incarnation: 1}
m1.aliveNode(&a1, nil, true)
a2 := alive{Node: addr2.String(), Addr: ip2, Port: 7946, Incarnation: 1}
m1.aliveNode(&a2, nil, false)
a3 := alive{Node: addr3.String(), Addr: ip3, Port: 7946, Incarnation: 1}
m1.aliveNode(&a3, nil, false)
// Make sure m4 is configured with the same protocol version as m1 so
// the TCP fallback behavior is enabled.
a4 := alive{
Node: addr4.String(),
Addr: ip4,
Port: 7946,
Incarnation: 1,
Vsn: []uint8{
ProtocolVersionMin,
ProtocolVersionMax,
m1.config.ProtocolVersion,
m1.config.DelegateProtocolMin,
m1.config.DelegateProtocolMax,
m1.config.DelegateProtocolVersion,
},
}
m1.aliveNode(&a4, nil, false)
// Isolate m4 from UDP traffic by re-opening its listener on the wrong
// port. This should force the TCP fallback path to be used.
var err error
if err = m4.udpListener.Close(); err != nil {
t.Fatalf("err: %v", err)
}
udpAddr := &net.UDPAddr{IP: ip4, Port: 9999}
if m4.udpListener, err = net.ListenUDP("udp", udpAddr); err != nil {
t.Fatalf("err: %v", err)
}
// Disable the TCP pings using the config mechanism.
m1.config.DisableTcpPings = true
// Have node m1 probe m4.
n := m1.nodeMap[addr4.String()]
startProbe := time.Now()
m1.probeNode(n)
probeTime := time.Now().Sub(startProbe)
// Node should be reported suspect.
if n.State != stateSuspect {
t.Fatalf("expect node to be suspect")
}
// Make sure TCP activity didn't cause us to wait too long before
// timing out.
if probeTime > probeTimeMax {
t.Fatalf("took to long to probe, %9.6f", probeTime.Seconds())
}
// Confirm at least one of the peers attempted an indirect probe.
time.Sleep(probeTimeMax)
if m2.sequenceNum != 1 && m3.sequenceNum != 1 {
t.Fatalf("bad seqnos %v, %v", m2.sequenceNum, m3.sequenceNum)
}
}
func TestMemberList_ProbeNode_FallbackTCP_OldProtocol(t *testing.T) {
addr1 := getBindAddr()
addr2 := getBindAddr()
addr3 := getBindAddr()
addr4 := getBindAddr()
ip1 := []byte(addr1)
ip2 := []byte(addr2)
ip3 := []byte(addr3)
ip4 := []byte(addr4)
var probeTimeMax time.Duration
m1 := HostMemberlist(addr1.String(), t, func(c *Config) {
c.ProbeTimeout = 10 * time.Millisecond
c.ProbeInterval = 200 * time.Millisecond
probeTimeMax = c.ProbeInterval + 20*time.Millisecond
})
defer m1.Shutdown()
m2 := HostMemberlist(addr2.String(), t, nil)
defer m2.Shutdown()
m3 := HostMemberlist(addr3.String(), t, nil)
defer m3.Shutdown()
m4 := HostMemberlist(addr4.String(), t, nil)
defer m4.Shutdown()
a1 := alive{Node: addr1.String(), Addr: ip1, Port: 7946, Incarnation: 1}
m1.aliveNode(&a1, nil, true)
a2 := alive{Node: addr2.String(), Addr: ip2, Port: 7946, Incarnation: 1}
m1.aliveNode(&a2, nil, false)
a3 := alive{Node: addr3.String(), Addr: ip3, Port: 7946, Incarnation: 1}
m1.aliveNode(&a3, nil, false)
// Set up m4 so that it doesn't understand a version of the protocol
// that supports TCP pings.
a4 := alive{
Node: addr4.String(),
Addr: ip4,
Port: 7946,
Incarnation: 1,
Vsn: []uint8{
ProtocolVersionMin,
ProtocolVersion2Compatible,
ProtocolVersion2Compatible,
m1.config.DelegateProtocolMin,
m1.config.DelegateProtocolMax,
m1.config.DelegateProtocolVersion,
},
}
m1.aliveNode(&a4, nil, false)
// Isolate m4 from UDP traffic by re-opening its listener on the wrong
// port. This should force the TCP fallback path to be used.
var err error
if err = m4.udpListener.Close(); err != nil {
t.Fatalf("err: %v", err)
}
udpAddr := &net.UDPAddr{IP: ip4, Port: 9999}
if m4.udpListener, err = net.ListenUDP("udp", udpAddr); err != nil {
t.Fatalf("err: %v", err)
}
// Have node m1 probe m4.
n := m1.nodeMap[addr4.String()]
startProbe := time.Now()
m1.probeNode(n)
probeTime := time.Now().Sub(startProbe)
// Node should be reported suspect.
if n.State != stateSuspect {
t.Fatalf("expect node to be suspect")
}
// Make sure TCP activity didn't cause us to wait too long before
// timing out.
if probeTime > probeTimeMax {
t.Fatalf("took to long to probe, %9.6f", probeTime.Seconds())
}
// Confirm at least one of the peers attempted an indirect probe.
time.Sleep(probeTimeMax)
if m2.sequenceNum != 1 && m3.sequenceNum != 1 {
t.Fatalf("bad seqnos %v, %v", m2.sequenceNum, m3.sequenceNum)
}
}
*/
func TestMemberList_ProbeNode_Awareness_Degraded(t *testing.T) {
addr1 := getBindAddr()
addr2 := getBindAddr()
addr3 := getBindAddr()
addr4 := getBindAddr()
ip1 := []byte(addr1)
ip2 := []byte(addr2)
ip3 := []byte(addr3)
ip4 := []byte(addr4)
var probeTimeMin time.Duration
m1 := HostMemberlist(addr1.String(), t, func(c *Config) {
c.ProbeTimeout = 10 * time.Millisecond
c.ProbeInterval = 200 * time.Millisecond
probeTimeMin = 2*c.ProbeInterval - 50*time.Millisecond
})
defer m1.Shutdown()
m2 := HostMemberlist(addr2.String(), t, func(c *Config) {
c.ProbeTimeout = 10 * time.Millisecond
c.ProbeInterval = 200 * time.Millisecond
})
defer m2.Shutdown()
m3 := HostMemberlist(addr3.String(), t, func(c *Config) {
c.ProbeTimeout = 10 * time.Millisecond
c.ProbeInterval = 200 * time.Millisecond
})
defer m3.Shutdown()
// This will enable nacks by invoking the latest protocol version.
vsn := []uint8{
ProtocolVersionMin,
ProtocolVersionMax,
m1.config.ProtocolVersion,
m1.config.DelegateProtocolMin,
m1.config.DelegateProtocolMax,
m1.config.DelegateProtocolVersion,
}
a1 := alive{Node: addr1.String(), Addr: ip1, Port: 7946, Incarnation: 1, Vsn: vsn}
m1.aliveNode(&a1, nil, true)
a2 := alive{Node: addr2.String(), Addr: ip2, Port: 7946, Incarnation: 1, Vsn: vsn}
m1.aliveNode(&a2, nil, false)
a3 := alive{Node: addr3.String(), Addr: ip3, Port: 7946, Incarnation: 1, Vsn: vsn}
m1.aliveNode(&a3, nil, false)
// Node 4 never gets started.
a4 := alive{Node: addr4.String(), Addr: ip4, Port: 7946, Incarnation: 1, Vsn: vsn}
m1.aliveNode(&a4, nil, false)
// Start the health in a degraded state.
m1.awareness.ApplyDelta(1)
if score := m1.GetHealthScore(); score != 1 {
t.Fatalf("bad: %d", score)
}
// Have node m1 probe m4.
n := m1.nodeMap[addr4.String()]
startProbe := time.Now()
m1.probeNode(n)
probeTime := time.Now().Sub(startProbe)
// Node should be reported suspect.
if n.State != stateSuspect {
t.Fatalf("expect node to be suspect")
}
// Make sure we timed out approximately on time (note that we accounted
// for the slowed-down failure detector in the probeTimeMin calculation.
if probeTime < probeTimeMin {
t.Fatalf("probed too quickly, %9.6f", probeTime.Seconds())
}
// Confirm at least one of the peers attempted an indirect probe.
if m2.sequenceNum != 1 && m3.sequenceNum != 1 {
t.Fatalf("bad seqnos %v, %v", m2.sequenceNum, m3.sequenceNum)
}
// We should have gotten all the nacks, so our score should remain the
// same, since we didn't get a successful probe.
if score := m1.GetHealthScore(); score != 1 {
t.Fatalf("bad: %d", score)
}
}
func TestMemberList_ProbeNode_Awareness_Improved(t *testing.T) {
addr1 := getBindAddr()
addr2 := getBindAddr()
ip1 := []byte(addr1)
ip2 := []byte(addr2)
m1 := HostMemberlist(addr1.String(), t, func(c *Config) {
c.ProbeTimeout = 10 * time.Millisecond
c.ProbeInterval = 200 * time.Millisecond
})
defer m1.Shutdown()
m2 := HostMemberlist(addr2.String(), t, nil)
defer m2.Shutdown()
a1 := alive{Node: addr1.String(), Addr: ip1, Port: 7946, Incarnation: 1}
m1.aliveNode(&a1, nil, true)
a2 := alive{Node: addr2.String(), Addr: ip2, Port: 7946, Incarnation: 1}
m1.aliveNode(&a2, nil, false)
// Start the health in a degraded state.
m1.awareness.ApplyDelta(1)
if score := m1.GetHealthScore(); score != 1 {
t.Fatalf("bad: %d", score)
}
// Have node m1 probe m2.
n := m1.nodeMap[addr2.String()]
m1.probeNode(n)
// Node should be reported alive.
if n.State != stateAlive {
t.Fatalf("expect node to be suspect")
}
// Our score should have improved since we did a good probe.
if score := m1.GetHealthScore(); score != 0 {
t.Fatalf("bad: %d", score)
}
}
func TestMemberList_ProbeNode_Awareness_MissedNack(t *testing.T) {
addr1 := getBindAddr()
addr2 := getBindAddr()
addr3 := getBindAddr()
addr4 := getBindAddr()
ip1 := []byte(addr1)
ip2 := []byte(addr2)
ip3 := []byte(addr3)
ip4 := []byte(addr4)
var probeTimeMax time.Duration
m1 := HostMemberlist(addr1.String(), t, func(c *Config) {
c.ProbeTimeout = 10 * time.Millisecond
c.ProbeInterval = 200 * time.Millisecond
probeTimeMax = c.ProbeInterval + 50*time.Millisecond
})
defer m1.Shutdown()
m2 := HostMemberlist(addr2.String(), t, func(c *Config) {
c.ProbeTimeout = 10 * time.Millisecond
c.ProbeInterval = 200 * time.Millisecond
})
defer m2.Shutdown()
// This will enable nacks by invoking the latest protocol version.
vsn := []uint8{
ProtocolVersionMin,
ProtocolVersionMax,
m1.config.ProtocolVersion,
m1.config.DelegateProtocolMin,
m1.config.DelegateProtocolMax,
m1.config.DelegateProtocolVersion,
}
a1 := alive{Node: addr1.String(), Addr: ip1, Port: 7946, Incarnation: 1, Vsn: vsn}
m1.aliveNode(&a1, nil, true)
a2 := alive{Node: addr2.String(), Addr: ip2, Port: 7946, Incarnation: 1, Vsn: vsn}
m1.aliveNode(&a2, nil, false)
// Node 3 and node 4 never get started.
a3 := alive{Node: addr3.String(), Addr: ip3, Port: 7946, Incarnation: 1, Vsn: vsn}
m1.aliveNode(&a3, nil, false)
a4 := alive{Node: addr4.String(), Addr: ip4, Port: 7946, Incarnation: 1, Vsn: vsn}
m1.aliveNode(&a4, nil, false)
// Make sure health looks good.
if score := m1.GetHealthScore(); score != 0 {
t.Fatalf("bad: %d", score)
}
// Have node m1 probe m4.
n := m1.nodeMap[addr4.String()]
startProbe := time.Now()
m1.probeNode(n)
probeTime := time.Now().Sub(startProbe)
// Node should be reported suspect.
if n.State != stateSuspect {
t.Fatalf("expect node to be suspect")
}
// Make sure we timed out approximately on time.
if probeTime > probeTimeMax {
t.Fatalf("took to long to probe, %9.6f", probeTime.Seconds())
}
// We should have gotten dinged for the missed nack.
time.Sleep(probeTimeMax)
if score := m1.GetHealthScore(); score != 1 {
t.Fatalf("bad: %d", score)
}
}
func TestMemberList_ProbeNode_Awareness_OldProtocol(t *testing.T) {
addr1 := getBindAddr()
addr2 := getBindAddr()
addr3 := getBindAddr()
addr4 := getBindAddr()
ip1 := []byte(addr1)
ip2 := []byte(addr2)
ip3 := []byte(addr3)
ip4 := []byte(addr4)
var probeTimeMax time.Duration
m1 := HostMemberlist(addr1.String(), t, func(c *Config) {
c.ProbeTimeout = 10 * time.Millisecond
c.ProbeInterval = 200 * time.Millisecond
probeTimeMax = c.ProbeInterval + 20*time.Millisecond
})
defer m1.Shutdown()
m2 := HostMemberlist(addr2.String(), t, nil)
defer m2.Shutdown()
m3 := HostMemberlist(addr3.String(), t, nil)
defer m3.Shutdown()
a1 := alive{Node: addr1.String(), Addr: ip1, Port: 7946, Incarnation: 1}
m1.aliveNode(&a1, nil, true)
a2 := alive{Node: addr2.String(), Addr: ip2, Port: 7946, Incarnation: 1}
m1.aliveNode(&a2, nil, false)
a3 := alive{Node: addr3.String(), Addr: ip3, Port: 7946, Incarnation: 1}
m1.aliveNode(&a3, nil, false)
// Node 4 never gets started.
a4 := alive{Node: addr4.String(), Addr: ip4, Port: 7946, Incarnation: 1}
m1.aliveNode(&a4, nil, false)
// Make sure health looks good.
if score := m1.GetHealthScore(); score != 0 {
t.Fatalf("bad: %d", score)
}
// Have node m1 probe m4.
n := m1.nodeMap[addr4.String()]
startProbe := time.Now()
m1.probeNode(n)
probeTime := time.Now().Sub(startProbe)
// Node should be reported suspect.
if n.State != stateSuspect {
t.Fatalf("expect node to be suspect")
}
// Make sure we timed out approximately on time.
if probeTime > probeTimeMax {
t.Fatalf("took to long to probe, %9.6f", probeTime.Seconds())
}
// Confirm at least one of the peers attempted an indirect probe.
time.Sleep(probeTimeMax)
if m2.sequenceNum != 1 && m3.sequenceNum != 1 {
t.Fatalf("bad seqnos %v, %v", m2.sequenceNum, m3.sequenceNum)
}
// Since we are using the old protocol here, we should have gotten dinged
// for a failed health check.
if score := m1.GetHealthScore(); score != 1 {
t.Fatalf("bad: %d", score)
}
}
func TestMemberList_ProbeNode_Buddy(t *testing.T) {
addr1 := getBindAddr()
addr2 := getBindAddr()
ip1 := []byte(addr1)
ip2 := []byte(addr2)
m1 := HostMemberlist(addr1.String(), t, func(c *Config) {
c.ProbeTimeout = time.Millisecond
c.ProbeInterval = 10 * time.Millisecond
})
m2 := HostMemberlist(addr2.String(), t, nil)
a1 := alive{Node: addr1.String(), Addr: ip1, Port: 7946, Incarnation: 1}
a2 := alive{Node: addr2.String(), Addr: ip2, Port: 7946, Incarnation: 1}
m1.aliveNode(&a1, nil, true)
m1.aliveNode(&a2, nil, false)
m2.aliveNode(&a2, nil, true)
// Force the state to suspect so we piggyback a suspect message with the ping.
// We should see this get refuted later, and the ping will succeed.
n := m1.nodeMap[addr2.String()]
n.State = stateSuspect
m1.probeNode(n)
// Make sure a ping was sent.
if m1.sequenceNum != 1 {
t.Fatalf("bad seqno %v", m1.sequenceNum)
}
// Check a broadcast is queued.
if num := m2.broadcasts.NumQueued(); num != 1 {
t.Fatalf("expected only one queued message: %d", num)
}
// Should be alive msg.
if messageType(m2.broadcasts.bcQueue[0].b.Message()[0]) != aliveMsg {
t.Fatalf("expected queued alive msg")
}
}
func TestMemberList_ProbeNode(t *testing.T) {
addr1 := getBindAddr()
addr2 := getBindAddr()
ip1 := []byte(addr1)
ip2 := []byte(addr2)
m1 := HostMemberlist(addr1.String(), t, func(c *Config) {
c.ProbeTimeout = time.Millisecond
c.ProbeInterval = 10 * time.Millisecond
})
_ = HostMemberlist(addr2.String(), t, nil)
a1 := alive{Node: addr1.String(), Addr: ip1, Port: 7946, Incarnation: 1}
m1.aliveNode(&a1, nil, true)
a2 := alive{Node: addr2.String(), Addr: ip2, Port: 7946, Incarnation: 1}
m1.aliveNode(&a2, nil, false)
n := m1.nodeMap[addr2.String()]
m1.probeNode(n)
// Should be marked alive
if n.State != stateAlive {
t.Fatalf("Expect node to be alive")
}
// Should increment seqno
if m1.sequenceNum != 1 {
t.Fatalf("bad seqno %v", m1.sequenceNum)
}
}
func TestMemberList_Ping(t *testing.T) {
addr1 := getBindAddr()
addr2 := getBindAddr()
ip1 := []byte(addr1)
ip2 := []byte(addr2)
m1 := HostMemberlist(addr1.String(), t, func(c *Config) {
c.ProbeTimeout = time.Millisecond
c.ProbeInterval = 10 * time.Second
})
_ = HostMemberlist(addr2.String(), t, nil)
a1 := alive{Node: addr1.String(), Addr: ip1, Port: 7946, Incarnation: 1}
m1.aliveNode(&a1, nil, true)
a2 := alive{Node: addr2.String(), Addr: ip2, Port: 7946, Incarnation: 1}
m1.aliveNode(&a2, nil, false)
// Do a legit ping.
n := m1.nodeMap[addr2.String()]
addr, err := net.ResolveUDPAddr("udp", net.JoinHostPort(addr2.String(), "7946"))
if err != nil {
t.Fatalf("err: %v", err)
}
rtt, err := m1.Ping(n.Name, addr)
if err != nil {
t.Fatalf("err: %v", err)
}
if !(rtt > 0) {
t.Fatalf("bad: %v", rtt)
}
// This ping has a bad node name so should timeout.
_, err = m1.Ping("bad", addr)
if _, ok := err.(NoPingResponseError); !ok || err == nil {
t.Fatalf("bad: %v", err)
}
}
func TestMemberList_ResetNodes(t *testing.T) {
m := GetMemberlist(t)
a1 := alive{Node: "test1", Addr: []byte{127, 0, 0, 1}, Incarnation: 1}
m.aliveNode(&a1, nil, false)
a2 := alive{Node: "test2", Addr: []byte{127, 0, 0, 2}, Incarnation: 1}
m.aliveNode(&a2, nil, false)
a3 := alive{Node: "test3", Addr: []byte{127, 0, 0, 3}, Incarnation: 1}
m.aliveNode(&a3, nil, false)
d := dead{Node: "test2", Incarnation: 1}
m.deadNode(&d)
m.config.GossipToTheDeadTime = 100 * time.Millisecond
m.resetNodes()
if len(m.nodes) != 3 {
t.Fatalf("Bad length")
}
if _, ok := m.nodeMap["test2"]; !ok {
t.Fatalf("test2 should not be unmapped")
}
time.Sleep(200 * time.Millisecond)
m.resetNodes()
if len(m.nodes) != 2 {
t.Fatalf("Bad length")
}
if _, ok := m.nodeMap["test2"]; ok {
t.Fatalf("test2 should be unmapped")
}
}
func TestMemberList_NextSeq(t *testing.T) {
m := &Memberlist{}
if m.nextSeqNo() != 1 {
t.Fatalf("bad sequence no")
}
if m.nextSeqNo() != 2 {
t.Fatalf("bad sequence no")
}
}
func TestMemberList_setProbeChannels(t *testing.T) {
m := &Memberlist{ackHandlers: make(map[uint32]*ackHandler)}
ch := make(chan ackMessage, 1)
m.setProbeChannels(0, ch, nil, 10*time.Millisecond)
if _, ok := m.ackHandlers[0]; !ok {
t.Fatalf("missing handler")
}
time.Sleep(20 * time.Millisecond)
if _, ok := m.ackHandlers[0]; ok {
t.Fatalf("non-reaped handler")
}
}
func TestMemberList_setAckHandler(t *testing.T) {
m := &Memberlist{ackHandlers: make(map[uint32]*ackHandler)}
f := func([]byte, time.Time) {}
m.setAckHandler(0, f, 10*time.Millisecond)
if _, ok := m.ackHandlers[0]; !ok {
t.Fatalf("missing handler")
}
time.Sleep(20 * time.Millisecond)
if _, ok := m.ackHandlers[0]; ok {
t.Fatalf("non-reaped handler")
}
}
func TestMemberList_invokeAckHandler(t *testing.T) {
m := &Memberlist{ackHandlers: make(map[uint32]*ackHandler)}
// Does nothing
m.invokeAckHandler(ackResp{}, time.Now())
var b bool
f := func(payload []byte, timestamp time.Time) { b = true }
m.setAckHandler(0, f, 10*time.Millisecond)
// Should set b
m.invokeAckHandler(ackResp{0, nil}, time.Now())
if !b {
t.Fatalf("b not set")
}
if _, ok := m.ackHandlers[0]; ok {
t.Fatalf("non-reaped handler")
}
}
func TestMemberList_invokeAckHandler_Channel_Ack(t *testing.T) {
m := &Memberlist{ackHandlers: make(map[uint32]*ackHandler)}
ack := ackResp{0, []byte{0, 0, 0}}
// Does nothing
m.invokeAckHandler(ack, time.Now())
ackCh := make(chan ackMessage, 1)
nackCh := make(chan struct{}, 1)
m.setProbeChannels(0, ackCh, nackCh, 10*time.Millisecond)
// Should send message
m.invokeAckHandler(ack, time.Now())
select {
case v := <-ackCh:
if v.Complete != true {
t.Fatalf("Bad value")
}
if bytes.Compare(v.Payload, ack.Payload) != 0 {
t.Fatalf("wrong payload. expected: %v; actual: %v", ack.Payload, v.Payload)
}
case <-nackCh:
t.Fatalf("should not get a nack")
default:
t.Fatalf("message not sent")
}
if _, ok := m.ackHandlers[0]; ok {
t.Fatalf("non-reaped handler")
}
}
func TestMemberList_invokeAckHandler_Channel_Nack(t *testing.T) {
m := &Memberlist{ackHandlers: make(map[uint32]*ackHandler)}
nack := nackResp{0}
// Does nothing.
m.invokeNackHandler(nack)
ackCh := make(chan ackMessage, 1)
nackCh := make(chan struct{}, 1)
m.setProbeChannels(0, ackCh, nackCh, 10*time.Millisecond)
// Should send message.
m.invokeNackHandler(nack)
select {