[tor-commits] [pluggable-transports/snowflake] 03/07: Add distinct IP counter to broker

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shelikhoo pushed a commit to branch main
in repository pluggable-transports/snowflake.

commit 2541b13166b9e502c5314536c3c2777fd84db45b
Author: Shelikhoo <xiaokangwang@xxxxxxxxxxx>
AuthorDate: Fri May 27 17:37:23 2022 +0100

    Add distinct IP counter to broker
---
 broker/broker.go | 17 +++++++++++++++++
 broker/ipc.go    |  1 +
 2 files changed, 18 insertions(+)

diff --git a/broker/broker.go b/broker/broker.go
index 9162370..2bf4614 100644
--- a/broker/broker.go
+++ b/broker/broker.go
@@ -11,6 +11,8 @@ import (
 	"crypto/tls"
 	"flag"
 	"git.torproject.org/pluggable-transports/snowflake.git/v2/common/bridgefingerprint"
+	"git.torproject.org/pluggable-transports/snowflake.git/v2/common/ipsetsink"
+	"git.torproject.org/pluggable-transports/snowflake.git/v2/common/ipsetsink/sinkcluster"
 	"io"
 	"log"
 	"net/http"
@@ -194,6 +196,8 @@ func main() {
 	var certFilename, keyFilename string
 	var disableGeoip bool
 	var metricsFilename string
+	var ipCountFilename, ipCountMaskingKey string
+	var ipCountInterval time.Duration
 	var unsafeLogging bool
 
 	flag.StringVar(&acmeEmail, "acme-email", "", "optional contact email for Let's Encrypt notifications")
@@ -210,6 +214,9 @@ func main() {
 	flag.BoolVar(&disableTLS, "disable-tls", false, "don't use HTTPS")
 	flag.BoolVar(&disableGeoip, "disable-geoip", false, "don't use geoip for stats collection")
 	flag.StringVar(&metricsFilename, "metrics-log", "", "path to metrics logging output")
+	flag.StringVar(&ipCountFilename, "ip-count-log", "", "path to ip count logging output")
+	flag.StringVar(&ipCountMaskingKey, "ip-count-mask", "", "masking key for ip count logging")
+	flag.DurationVar(&ipCountInterval, "ip-count-interval", time.Hour, "time interval between each chunk")
 	flag.BoolVar(&unsafeLogging, "unsafe-logging", false, "prevent logs from being scrubbed")
 	flag.Parse()
 
@@ -257,6 +264,16 @@ func main() {
 		}
 	}
 
+	if ipCountFilename != "" {
+		ipCountFile, err := os.OpenFile(ipCountFilename, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
+
+		if err != nil {
+			log.Fatal(err.Error())
+		}
+		ipSetSink := ipsetsink.NewIPSetSink(ipCountMaskingKey)
+		ctx.metrics.distinctIPWriter = sinkcluster.NewClusterWriter(ipCountFile, ipCountInterval, ipSetSink)
+	}
+
 	go ctx.Broker()
 
 	i := &IPC{ctx}
diff --git a/broker/ipc.go b/broker/ipc.go
index f5d4747..30de180 100644
--- a/broker/ipc.go
+++ b/broker/ipc.go
@@ -106,6 +106,7 @@ func (i *IPC) ProxyPolls(arg messages.Arg, response *[]byte) error {
 	} else {
 		i.ctx.metrics.lock.Lock()
 		i.ctx.metrics.UpdateCountryStats(remoteIP, proxyType, natType)
+		i.ctx.metrics.RecordIPAddress(remoteIP)
 		i.ctx.metrics.lock.Unlock()
 	}
 

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