"github.com/cloudfoundry/sonde-go/events"
"github.com/gogo/protobuf/proto"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
var _ = Describe("UDPReader", func() {
var (
port int
reader *messagereader.UDPReader
)
BeforeEach(func() {
port = 3457
reader = messagereader.NewUDP(port)
})
AfterEach(func() {
reader.Close()
})
It("should receive message on specified port", func() {
udpWriteValueMessage(port)
udpWriteValueMessage(port)
Eventually(reader.Read()).ShouldNot(BeNil())
Eventually(reader.Read()).ShouldNot(BeNil())
})
})
func udpWriteValueMessage(port int) {
func main() {
runtime.GOMAXPROCS(runtime.NumCPU())
var (
interval time.Duration
writeRate int
stopAfter time.Duration
concurrentWriters int
eventType events.Envelope_EventType
protocol string
serverCert string
serverKey string
caCert string
burstDelay time.Duration
)
flag.Var(newDurationValue(&interval, time.Second), "interval", "Interval for reported results")
flag.IntVar(&writeRate, "writeRate", 15000, "Number of writes per second to send to metron")
flag.Var(newDurationValue(&stopAfter, 5*time.Minute), "stopAfter", "How long to run the experiment for")
flag.IntVar(&concurrentWriters, "concurrentWriters", 1, "Number of concurrent writers")
flag.Var(newEventTypeValue(&eventType, events.Envelope_ValueMetric), "eventType", "The event type to test")
flag.StringVar(&protocol, "protocol", "udp", "The protocol to configure metron to send messages over")
flag.StringVar(&serverCert, "serverCert", "../../integration_tests/fixtures/server.crt", "The server cert file (for TLS connections)")
flag.StringVar(&serverKey, "serverKey", "../../integration_tests/fixtures/server.key", "The server key file (for TLS connections)")
flag.StringVar(&caCert, "caCert", "../../integration_tests/fixtures/loggregator-ca.crt", "The certificate authority cert file (for TLS connections)")
flag.Var(newDurationValue(&burstDelay, 0), "burstDelay", "The delay between burst sequences. If this is non-zero then writeRate is used as the number of messages to send each burst.")
flag.Parse()
reporter := metricsreporter.New(interval, os.Stdout)
var generator writestrategies.MessageGenerator
switch eventType {
case events.Envelope_ValueMetric:
generator = messagegenerator.NewValueMetricGenerator()
case events.Envelope_LogMessage:
generator = messagegenerator.NewLogMessageGenerator("fake-app-id")
default:
log.Fatalf("Unsupported envelope type: %v", eventType)
}
var dopplerURLs []string
var reader eventtypereader.MessageReader
switch protocol {
case "udp":
reader = messagereader.NewUDP(3457)
dopplerURLs = []string{"udp://127.0.0.1:3457"}
case "tls":
tlsConfig, err := listeners.NewTLSConfig(
serverCert,
serverKey,
caCert,
)
if err != nil {
log.Printf("Error: failed to load TLS config: %s", err)
os.Exit(1)
}
tlsConfig.InsecureSkipVerify = true
reader = messagereader.NewTLS(3458, tlsConfig)
dopplerURLs = []string{"tls://127.0.0.1:3458"}
default:
panic(fmt.Errorf("Unknown protocol %s", protocol))
}
valueMetricReader := eventtypereader.New(reporter.ReceivedCounter(), reader, eventType, "test-origin")
exp := experiment.NewExperiment(valueMetricReader)
for i := 0; i < concurrentWriters; i++ {
writer := messagewriter.NewMessageWriter("localhost", 51161, "", reporter.SentCounter())
writeStrategy := chooseStrategy(generator, writer, writeRate, burstDelay)
exp.AddWriteStrategy(writeStrategy)
}
adapter := announceToEtcd(dopplerURLs...)
defer func() {
exp.Stop()
reporter.Stop()
err := adapter.Delete(nodeKey)
if err != nil {
log.Printf("Warning: Failed to delete etcd key %s: %s", nodeKey, err)
}
adapter.Disconnect()
}()
exp.Warmup()
go reporter.Start()
go exp.Start()
timer := time.NewTimer(stopAfter)
<-timer.C
}