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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,42 @@ | ||
| package flood | ||
|
|
||
| import ( | ||
| "github.com/DataDog/datadog-go/v5/flooder/pkg/flood" | ||
| "os" | ||
| "time" | ||
|
|
||
| "github.com/spf13/cobra" | ||
| ) | ||
|
|
||
| // floodCmd represents the base command when called without any subcommands | ||
| var floodCmd = &cobra.Command{ | ||
| Use: "v5", | ||
| Short: "Sends a lot of statsd points.", | ||
| Run: func(cmd *cobra.Command, args []string) { | ||
| flood.Flood(cmd, args) | ||
| }, | ||
| } | ||
|
|
||
| // Execute adds all child commands to the root command and sets flags appropriately. | ||
| // This is called by main.main(). It only needs to happen once to the rootCmd. | ||
| func Execute() { | ||
| err := floodCmd.Execute() | ||
| if err != nil { | ||
| os.Exit(1) | ||
| } | ||
| } | ||
|
|
||
| func init() { | ||
| floodCmd.Flags().StringP("address", "", "127.0.0.1:8125", "Address of the statsd server") | ||
| floodCmd.Flags().StringP("telemetry-address", "", "", "Address of the telemetry server") | ||
| floodCmd.Flags().BoolP("client-side-aggregation", "", false, "Enable client-side aggregation") | ||
| floodCmd.Flags().BoolP("extended-client-side-aggregation", "", false, "Enable extended client-side aggregation") | ||
| floodCmd.Flags().BoolP("channel-mode", "", false, "Enable channel mode") | ||
| floodCmd.Flags().IntP("channel-mode-buffer-size", "", 4096, "Set channel mode buffer size") | ||
| floodCmd.Flags().IntP("sender-queue-size", "", 512, "Set sender queue size") | ||
| floodCmd.Flags().DurationP("buffer-flush-interval", "", time.Duration(4)*time.Second, "Set buffer flush interval") | ||
| floodCmd.Flags().DurationP("write-timeout", "", time.Duration(100)*time.Millisecond, "Set write timeout") | ||
| floodCmd.Flags().StringSliceP("tags", "", []string{}, "Set tags") | ||
| floodCmd.Flags().IntP("points-per-10seconds", "", 100000, "Set points per 10 seconds") | ||
| floodCmd.Flags().BoolP("send-at-start-of-bucket", "", false, "Send all the points at the start of the 10 sec time bucket.") | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,7 @@ | ||
| package main | ||
|
|
||
| import "github.com/DataDog/datadog-go/v5/flooder/cmd/flood" | ||
|
|
||
| func main() { | ||
| flood.Execute() | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,190 @@ | ||
| package flood | ||
|
|
||
| import ( | ||
| "github.com/spf13/cobra" | ||
| "hash/fnv" | ||
| "log" | ||
| "strconv" | ||
| "strings" | ||
| "time" | ||
|
|
||
| "github.com/DataDog/datadog-go/v5/statsd" | ||
| ) | ||
|
|
||
| type client struct { | ||
| client *statsd.Client | ||
| pointsPer10Seconds int | ||
| sendAtStartOfBucket bool | ||
| } | ||
|
|
||
| func initClient(command *cobra.Command) (*client, error) { | ||
| var options []statsd.Option | ||
|
|
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| tags := []string{} | ||
|
|
||
| b, err := command.Flags().GetBool("client-side-aggregation") | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if b { | ||
| options = append(options, statsd.WithClientSideAggregation()) | ||
| } else { | ||
| options = append(options, statsd.WithoutClientSideAggregation()) | ||
| } | ||
| tags = append(tags, "client-side-aggregation:"+strconv.FormatBool(b)) | ||
|
|
||
| b, err = command.Flags().GetBool("extended-client-side-aggregation") | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if b { | ||
| options = append(options, statsd.WithExtendedClientSideAggregation()) | ||
| } | ||
| tags = append(tags, "extended-client-side-aggregation"+strconv.FormatBool(b)) | ||
|
|
||
| b, err = command.Flags().GetBool("channel-mode") | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if b { | ||
| options = append(options, statsd.WithChannelMode()) | ||
| } | ||
| tags = append(tags, "channel-mode:"+strconv.FormatBool(b)) | ||
|
|
||
| i, err := command.Flags().GetInt("channel-mode-buffer-size") | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| options = append(options, statsd.WithChannelModeBufferSize(i)) | ||
| tags = append(tags, "channel-mode-buffer-size:"+strconv.Itoa(i)) | ||
|
|
||
| i, err = command.Flags().GetInt("sender-queue-size") | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| options = append(options, statsd.WithSenderQueueSize(i)) | ||
| tags = append(tags, "sender-queue-size:"+strconv.Itoa(i)) | ||
|
|
||
| d, err := command.Flags().GetDuration("buffer-flush-interval") | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| options = append(options, statsd.WithBufferFlushInterval(d)) | ||
| tags = append(tags, "buffer-flush-interval:"+d.String()) | ||
|
|
||
| d, err = command.Flags().GetDuration("write-timeout") | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| options = append(options, statsd.WithWriteTimeout(d)) | ||
| tags = append(tags, "write-timeout:"+d.String()) | ||
|
|
||
| pointsPer10Seconds, err := command.Flags().GetInt("points-per-10seconds") | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| tags = append(tags, "points-per-10seconds:"+strconv.Itoa(pointsPer10Seconds)) | ||
|
|
||
| sendAtStart, err := command.Flags().GetBool("send-at-start-of-bucket") | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| tags = append(tags, "send-at-start-of-bucket:"+strconv.FormatBool(sendAtStart)) | ||
|
|
||
| address, err := command.Flags().GetString("address") | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| tags = append(tags, "address:"+address) | ||
|
|
||
| transport := "udp" | ||
| if strings.HasPrefix(address, statsd.UnixAddressPrefix) { | ||
| transport = "unix" | ||
| } | ||
| tags = append(tags, "transport:"+transport) | ||
|
|
||
| telemetryAddress, err := command.Flags().GetString("telemetry-address") | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if telemetryAddress == "" { | ||
| telemetryAddress = address | ||
| } | ||
| tags = append(tags, "telemetry-address:"+telemetryAddress) | ||
| options = append(options, statsd.WithTelemetryAddr(telemetryAddress)) | ||
|
|
||
| telemetryTransport := "udp" | ||
| if strings.HasPrefix(telemetryAddress, statsd.UnixAddressPrefix) { | ||
| telemetryTransport = "unix" | ||
| } | ||
| tags = append(tags, "telemetry-transport:"+telemetryTransport) | ||
|
|
||
| t, err := command.Flags().GetStringSlice("tags") | ||
| tags = append(tags, t...) | ||
| h := hash(tags) | ||
| tags = append(tags, "client-hash:"+strconv.Itoa(int(h))) | ||
|
|
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| options = append(options, statsd.WithTags(tags)) | ||
|
|
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| log.Printf("Tags: %v - Hash: %x", tags, h) | ||
|
|
||
| options = append(options, statsd.WithOriginDetection()) | ||
|
|
||
| c, err := statsd.New(address, options...) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return &client{ | ||
| client: c, | ||
| pointsPer10Seconds: pointsPer10Seconds, | ||
| sendAtStartOfBucket: sendAtStart, | ||
| }, nil | ||
| } | ||
|
|
||
| func hash(s []string) uint32 { | ||
| h := fnv.New32a() | ||
| for _, e := range s { | ||
| h.Write([]byte(e)) | ||
| } | ||
| return h.Sum32() | ||
| } | ||
|
|
||
| func Flood(command *cobra.Command, args []string) { | ||
| c, err := initClient(command) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| log.Printf("Sending %d points per 10 seconds", c.pointsPer10Seconds) | ||
|
|
||
| for { | ||
| t1 := time.Now() | ||
|
|
||
| for sent := 0; sent < c.pointsPer10Seconds; sent++ { | ||
| err := c.client.Incr("flood.dogstatsd.count", []string{}, 1) | ||
| if err != nil { | ||
| log.Printf("Error: %v", err) | ||
| } | ||
| if !c.sendAtStartOfBucket { | ||
| time.Sleep(time.Duration(8) * time.Second / time.Duration(c.pointsPer10Seconds)) | ||
| } | ||
| } | ||
| err := c.client.Count("flood.dogstatsd.expected", int64(c.pointsPer10Seconds), []string{}, 1) | ||
| if err != nil { | ||
| log.Printf("Error: %v", err) | ||
| } | ||
|
|
||
| t2 := time.Now() | ||
|
|
||
| duration := t2.Sub(t1) | ||
| s := time.Duration(10)*time.Second - duration | ||
| if s > 0 { | ||
| // Sleep until the next bucket | ||
| log.Printf("Sleeping for %f seconds", s.Seconds()) | ||
| time.Sleep(s) | ||
| } else { | ||
| log.Printf("We're %f seconds behind", s.Seconds()*-1) | ||
| } | ||
| } | ||
| c.client.Close() | ||
| } |
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