func (s *SenderTestSuite) TestConnectErrors(t *C) {
spool := mock.NewSpooler(nil)
spool.FilesOut = []string{"slow001.json"}
spool.DataOut = map[string][]byte{"slow001.json": []byte("...")}
sender := data.NewSender(s.logger, s.client)
err := sender.Start(spool, s.tickerChan, 60, false)
t.Assert(err, IsNil)
// Any connect error will do.
s.client.ConnectError = io.EOF
defer func() { s.client.ConnectError = nil }()
// Tick causes send to connect and send all files.
s.tickerChan <- time.Now()
t0 := time.Now()
// Wait for sender to start trying to connect...
if !test.WaitStatus(5, sender, "data-sender", "Connecting") {
t.Fatal("Timeout waiting for data-sender status=Connecting")
}
// ...then wait for it to finsih and return.
if !test.WaitStatusPrefix(data.MAX_SEND_ERRORS*data.CONNECT_ERROR_WAIT, sender, "data-sender", "Idle") {
t.Fatal("Timeout waiting for data-sender status=Idle")
}
d := time.Now().Sub(t0).Seconds()
// It should wait between reconnects, but not too long.
if d < float64((data.MAX_SEND_ERRORS-1)*data.CONNECT_ERROR_WAIT) {
t.Error("Waits between reconnects")
}
if d > float64(data.MAX_SEND_ERRORS*data.CONNECT_ERROR_WAIT) {
t.Error("Waited too long between reconnects")
}
err = sender.Stop()
t.Assert(err, IsNil)
// Couldn't connect, so it doesn't send or reject anything.
t.Check(len(spool.DataOut), Equals, 1)
t.Check(len(spool.RejectedFiles), Equals, 0)
// It should have called ConnectOnce() serveral times, else it didn't
// really try to reconnect.
trace := test.DrainTraceChan(s.client.TraceChan)
t.Check(trace, DeepEquals, []string{
"ConnectOnce",
"ConnectOnce",
"ConnectOnce",
"DisconnectOnce",
})
}
func (s *SenderTestSuite) Test500Error(t *C) {
spool := mock.NewSpooler(nil)
spool.FilesOut = []string{"file1", "file2", "file3"}
spool.DataOut = map[string][]byte{
"file1": []byte("file1"),
"file2": []byte("file2"),
"file3": []byte("file3"),
}
sender := data.NewSender(s.logger, s.client)
err := sender.Start(spool, s.tickerChan, 5, false)
t.Assert(err, IsNil)
s.tickerChan <- time.Now()
got := test.WaitBytes(s.dataChan)
if same, diff := test.IsDeeply(got[0], []byte("file1")); !same {
t.Error(diff)
}
// 3 files before API error.
t.Check(len(spool.DataOut), Equals, 3)
// Simulate API error.
select {
case s.respChan <- &proto.Response{Code: 503}:
case <-time.After(500 * time.Millisecond):
t.Error("Sender receives prot.Response after sending data")
}
// Wait for it to finsih and return.
if !test.WaitStatusPrefix(data.MAX_SEND_ERRORS*data.CONNECT_ERROR_WAIT, sender, "data-sender", "Idle") {
t.Fatal("Timeout waiting for data-sender status=Idle")
}
// Still 3 files after API error.
t.Check(len(spool.DataOut), Equals, 3)
t.Check(len(spool.RejectedFiles), Equals, 0)
// There's only 1 call to SendBytes because after an API error
// the send stops immediately.
trace := test.DrainTraceChan(s.client.TraceChan)
t.Check(trace, DeepEquals, []string{
"ConnectOnce",
"SendBytes",
"Recv",
"DisconnectOnce",
})
err = sender.Stop()
t.Assert(err, IsNil)
}
func (s *SenderTestSuite) TestBadFiles(t *C) {
spool := mock.NewSpooler(nil)
spool.FilesOut = []string{"file1", "file2", "file3"}
spool.DataOut = map[string][]byte{
"file1": []byte("file1"),
"file2": []byte("file2"),
"file3": []byte("file3"),
}
sender := data.NewSender(s.logger, s.client)
err := sender.Start(spool, s.tickerChan, 5, false)
t.Assert(err, IsNil)
doneChan := make(chan bool, 1)
go func() {
resp := []uint{400, 400, 200}
for i := 0; i < 3; i++ {
// Wait for sender to send data.
select {
case <-s.dataChan:
case <-doneChan:
return
}
// Simulate API returns 400.
select {
case s.respChan <- &proto.Response{Code: resp[i]}:
case <-doneChan:
return
}
}
}()
s.tickerChan <- time.Now()
// Wait for sender to finish.
if !test.WaitStatusPrefix(data.MAX_SEND_ERRORS*data.CONNECT_ERROR_WAIT, sender, "data-sender", "Idle") {
t.Fatal("Timeout waiting for data-sender status=Idle")
}
doneChan <- true
err = sender.Stop()
t.Assert(err, IsNil)
// Bad files are removed, so all files should have been sent.
t.Check(len(spool.DataOut), Equals, 0)
t.Check(len(spool.RejectedFiles), Equals, 0)
}
func (s *TestSuite) TestStartCollectStop(t *C) {
// Create the monitor.
config := &mysql.Config{
Config: sysconfig.Config{
ServiceInstance: proto.ServiceInstance{
Service: "mysql",
InstanceId: 1,
},
},
}
m := mysql.NewMonitor(s.name, config, s.logger, mysqlConn.NewConnection(dsn))
if m == nil {
t.Fatal("Make new mysql.Monitor")
}
// Start the monitor.
err := m.Start(s.tickChan, s.reportChan)
if err != nil {
t.Fatalf("Start monitor without error, got %s", err)
}
// monitor=Ready once it has successfully connected to MySQL. This may
// take a few seconds (hopefully < 5) on a slow test machine.
if ok := test.WaitStatusPrefix(5, m, s.name, "Idle"); !ok {
t.Fatal("Monitor is ready")
}
// Send tick to make the monitor collect.
now := time.Now().UTC()
s.tickChan <- now
got := test.WaitSystemConfig(s.reportChan, 1)
if len(got) == 0 {
t.Fatal("Got a sysconfig after tick")
}
c := got[0]
if c.Ts != now.Unix() {
t.Error("Report.Ts set to %s; got %s", now.Unix(), c.Ts)
}
if len(c.Settings) < 100 {
t.Fatal("Collect > 100 vars; got %+v", c.Settings)
}
haveWaitTimeout := false
val := ""
for _, s := range c.Settings {
if s[0] == "wait_timeout" {
haveWaitTimeout = true
val = s[1]
}
}
if !haveWaitTimeout {
t.Logf("%+v\n", c)
t.Error("Got wait_timeout")
}
if val == "" {
t.Error("wait_timeout has value")
}
/**
* Stop the monitor.
*/
m.Stop()
if ok := test.WaitStatus(5, m, s.name, "Stopped"); !ok {
t.Fatal("Monitor has stopped")
}
}
func (s *ManagerTestSuite) TestStartCollectStop(t *C) {
files := []string{"stat", "meminfo", "vmstat", "loadavg", "diskstats"}
for _, file := range files {
if !pct.FileExists("/proc/" + file) {
t.Fatal("/proc/" + file + " does not exist")
}
}
// Create the monitor.
m := system.NewMonitor(s.name, &system.Config{}, s.logger)
if m == nil {
t.Fatal("Make new system.Monitor")
}
// Start the monitor.
err := m.Start(s.tickChan, s.collectionChan)
if err != nil {
t.Fatalf("Start monitor without error, got %s", err)
}
// system-monitor=Ready once it has started its internals,
// should be very fast.
if ok := test.WaitStatusPrefix(3, m, s.name, "Idle"); !ok {
t.Fatal("Monitor is ready")
}
// The monitor should only collect and send metrics on ticks; we haven't ticked yet.
got := test.WaitCollection(s.collectionChan, 0)
if len(got) > 0 {
t.Fatal("No tick, no collection; got %+v", got)
}
// Now tick. This should make monitor collect.
now := time.Now()
s.tickChan <- now
got = test.WaitCollection(s.collectionChan, 1)
t.Assert(got, Not(HasLen), 0)
t.Check(got, HasLen, 1)
c := got[0]
t.Check(c.Ts, Equals, now.Unix())
t.Assert(c.Metrics, Not(HasLen), 0)
// /proc/stat values are relative (current - prev) so there shouldn't be any
// after one tick.
haveCPU, _ := haveMetric("cpu/user", c.Metrics)
t.Check(haveCPU, Equals, false)
// But other metrics are not relative, so we should have them.
metrics := []string{"memory/MemTotal", "vmstat/numa_local", "loadavg/running", "disk/sda/reads"}
for _, metric := range metrics {
ok, val := haveMetric(metric, c.Metrics)
t.Check(ok, Equals, true)
t.Check(val, Not(Equals), 0)
}
// Tick a 2nd time and now we should get CPU metrics.
time.Sleep(200 * time.Millisecond)
now = time.Now()
s.tickChan <- now
got = test.WaitCollection(s.collectionChan, 1)
t.Assert(got, Not(HasLen), 0)
t.Check(got, HasLen, 1)
c = got[0]
t.Check(c.Ts, Equals, now.Unix())
t.Assert(c.Metrics, Not(HasLen), 0)
metrics = []string{"cpu/user", "cpu/nice", "cpu/system", "cpu/idle"}
for _, metric := range metrics {
ok, val := haveMetric(metric, c.Metrics)
t.Check(ok, Equals, true)
// Running this test requires some CPU so user and idle shouldn't be zero.
if metric == "cpu/user" || metric == "cpu/idle" {
t.Check(val, Not(Equals), 0)
}
}
/**
* Stop the monitor.
*/
m.Stop()
if ok := test.WaitStatus(5, m, s.name, "Stopped"); !ok {
t.Fatal("Monitor has stopped")
}
}
func (s *SenderTestSuite) TestRecvErrors(t *C) {
spool := mock.NewSpooler(nil)
spool.FilesOut = []string{"slow001.json"}
spool.DataOut = map[string][]byte{"slow001.json": []byte("...")}
sender := data.NewSender(s.logger, s.client)
err := sender.Start(spool, s.tickerChan, 60, false)
t.Assert(err, IsNil)
// Any recv error will do.
doneChan := make(chan bool)
go func() {
for {
select {
case s.client.RecvError <- io.EOF:
case <-doneChan:
return
}
}
}()
defer func() { doneChan <- true }()
// Tick causes send to connect and send all files.
s.tickerChan <- time.Now()
t0 := time.Now()
// Wait for sender to finsih and return.
if !test.WaitStatusPrefix(data.MAX_SEND_ERRORS*data.CONNECT_ERROR_WAIT, sender, "data-sender", "Idle") {
t.Fatal("Timeout waiting for data-sender status=Idle")
}
d := time.Now().Sub(t0).Seconds()
// It should wait between reconnects, but not too long.
if d < float64((data.MAX_SEND_ERRORS-1)*data.CONNECT_ERROR_WAIT) {
t.Error("Waits between reconnects")
}
if d > float64(data.MAX_SEND_ERRORS*data.CONNECT_ERROR_WAIT) {
t.Error("Waited too long between reconnects")
}
err = sender.Stop()
t.Assert(err, IsNil)
// Didn't receive proper ack, so it doesn't remove any data.
t.Check(len(spool.DataOut), Equals, 1)
t.Check(len(spool.RejectedFiles), Equals, 0)
// It should have called ConnectOnce() serveral times, else it didn't
// really try to reconnect.
trace := test.DrainTraceChan(s.client.TraceChan)
t.Check(trace, DeepEquals, []string{
"ConnectOnce",
"SendBytes",
"Recv",
"DisconnectOnce",
"ConnectOnce",
"SendBytes",
"Recv",
"DisconnectOnce",
"ConnectOnce",
"SendBytes",
"Recv",
"DisconnectOnce",
"DisconnectOnce",
})
}