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main.go
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main.go
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package main
import (
"encoding/json"
"flag"
"fmt"
"log"
"os"
"runtime"
"time"
"code.cloudfoundry.org/workpool"
"github.com/cloudfoundry/sonde-go/events"
"github.com/cloudfoundry/storeadapter"
"github.com/cloudfoundry/storeadapter/etcdstoreadapter"
"tools/benchmark/experiment"
"tools/benchmark/messagegenerator"
"tools/benchmark/messagereader"
"tools/benchmark/messagewriter"
"tools/benchmark/metricsreporter"
"tools/benchmark/writestrategies"
"tools/metronbenchmark/eventtypereader"
"plumbing"
)
const nodeKey = "/doppler/meta/z1/doppler_z1/0"
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 := plumbing.NewMutualTLSConfig(
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
}
func chooseStrategy(generator writestrategies.MessageGenerator, writer writestrategies.MessageWriter, writeRate int, burstDelay time.Duration) experiment.WriteStrategy {
if burstDelay > 0 {
params := writestrategies.BurstParameters{
Minimum: writeRate,
Maximum: writeRate,
Frequency: burstDelay,
}
return writestrategies.NewBurstWriteStrategy(generator, writer, params)
}
return writestrategies.NewConstantWriteStrategy(generator, writer, writeRate)
}
func NewStoreAdapter(urls []string, concurrentRequests int) storeadapter.StoreAdapter {
workPool, err := workpool.NewWorkPool(concurrentRequests)
if err != nil {
panic(err)
}
options := &etcdstoreadapter.ETCDOptions{
ClusterUrls: urls,
}
etcdStoreAdapter, err := etcdstoreadapter.New(options, workPool)
if err != nil {
panic(err)
}
etcdStoreAdapter.Connect()
return etcdStoreAdapter
}
func announceToEtcd(addresses ...string) storeadapter.StoreAdapter {
etcdUrls := []string{"http://localhost:4001"}
etcdMaxConcurrentRequests := 10
storeAdapter := NewStoreAdapter(etcdUrls, etcdMaxConcurrentRequests)
addressJSON, err := json.Marshal(map[string]interface{}{
"endpoints": addresses,
})
if err != nil {
panic(err)
}
node := storeadapter.StoreNode{
Key: nodeKey,
Value: addressJSON,
}
err = storeAdapter.Create(node)
if err != nil {
panic(err)
}
time.Sleep(50 * time.Millisecond)
return storeAdapter
}
// durationValue is a flag.Value for a time.Duration type
type durationValue time.Duration
func newDurationValue(duration *time.Duration, value time.Duration) *durationValue {
*duration = value
return (*durationValue)(duration)
}
func (d *durationValue) String() string {
return time.Duration(*d).String()
}
func (d *durationValue) Set(s string) error {
duration, err := time.ParseDuration(s)
if err != nil {
return err
}
*d = durationValue(duration)
return nil
}
// eventTypeValue is a flag.Value for an events.Envelope_EventType type
type eventTypeValue events.Envelope_EventType
func newEventTypeValue(typ *events.Envelope_EventType, value events.Envelope_EventType) *eventTypeValue {
*typ = value
return (*eventTypeValue)(typ)
}
func (e *eventTypeValue) String() string {
return events.Envelope_EventType(*e).String()
}
func (e *eventTypeValue) Set(s string) error {
typ, ok := events.Envelope_EventType_value[s]
if !ok {
return fmt.Errorf("No event type %s found", s)
}
*e = eventTypeValue(typ)
return nil
}