add jaeger tracing

Author: lanzafame

go.mod

@@ -20,10 +20,14 @@ require (
 	github.com/mattn/go-colorable v0.1.2 // indirect
 	github.com/multiformats/go-multiaddr v0.0.4
 	github.com/multiformats/go-multiaddr-net v0.0.1
-	github.com/opentracing/opentracing-go v1.1.0 // indirect
+	github.com/opentracing/opentracing-go v1.1.0
 	github.com/prometheus/client_golang v1.0.0
+	github.com/uber/jaeger-client-go v2.16.0+incompatible
+	github.com/uber/jaeger-lib v2.0.0+incompatible // indirect
 	go.opencensus.io v0.22.0
 	golang.org/x/net v0.0.0-20190522155817-f3200d17e092 // indirect
 	golang.org/x/sys v0.0.0-20190531175056-4c3a928424d2 // indirect
 	gopkg.in/yaml.v2 v2.2.2 // indirect
 )
+
+replace github.com/libp2p/go-libp2p-kad-dht => ../../libp2p/go-libp2p-kad-dht

go.sum

@@ -22,10 +22,13 @@ github.com/btcsuite/snappy-go v0.0.0-20151229074030-0bdef8d06723/go.mod h1:8woku
 github.com/btcsuite/websocket v0.0.0-20150119174127-31079b680792/go.mod h1:ghJtEyQwv5/p4Mg4C0fgbePVuGr935/5ddU9Z3TmDRY=
 github.com/btcsuite/winsvc v1.0.0/go.mod h1:jsenWakMcC0zFBFurPLEAyrnc/teJEM1O46fmI40EZs=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
+github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd h1:qMd81Ts1T2OTKmB4acZcyKaMtRnY5Y44NuXGX2GFJ1w=
+github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd/go.mod h1:sE/e/2PUdi/liOCUjSTXgM1o87ZssimdTWN964YiIeI=
 github.com/coreos/go-semver v0.3.0 h1:wkHLiw0WNATZnSG7epLsujiMCgPAc9xhjJ4tgnAxmfM=
 github.com/coreos/go-semver v0.3.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
 github.com/davecgh/go-spew v0.0.0-20171005155431-ecdeabc65495/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/dgraph-io/badger v1.5.5-0.20190226225317-8115aed38f8f/go.mod h1:VZxzAIRPHRVNRKRo6AXrX9BJegn6il06VMTZVJYCIjQ=
 github.com/dgryski/go-farm v0.0.0-20190104051053-3adb47b1fb0f/go.mod h1:SqUrOPUnsFjfmXRMNPybcSiG0BgUW2AuFH8PAnS2iTw=
@@ -255,6 +258,7 @@ github.com/opentracing/opentracing-go v1.1.0/go.mod h1:UkNAQd3GIcIGf0SeVgPpRdFSt
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
 github.com/prometheus/client_golang v0.9.2/go.mod h1:OsXs2jCmiKlQ1lTBmv21f2mNfw4xf/QclQDMrYNZzcM=
@@ -278,9 +282,14 @@ github.com/spaolacci/murmur3 v1.1.0/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/syndtr/goleveldb v1.0.0 h1:fBdIW9lB4Iz0n9khmH8w27SJ3QEJ7+IgjPEwGSZiFdE=
 github.com/syndtr/goleveldb v1.0.0/go.mod h1:ZVVdQEZoIme9iO1Ch2Jdy24qqXrMMOU6lpPAyBWyWuQ=
+github.com/uber/jaeger-client-go v2.16.0+incompatible h1:Q2Pp6v3QYiocMxomCaJuwQGFt7E53bPYqEgug/AoBtY=
+github.com/uber/jaeger-client-go v2.16.0+incompatible/go.mod h1:WVhlPFC8FDjOFMMWRy2pZqQJSXxYSwNYOkTr/Z6d3Kk=
+github.com/uber/jaeger-lib v2.0.0+incompatible h1:iMSCV0rmXEogjNWPh2D0xk9YVKvrtGoHJNe9ebLu/pw=
+github.com/uber/jaeger-lib v2.0.0+incompatible/go.mod h1:ComeNDZlWwrWnDv8aPp0Ba6+uUTzImX/AauajbLI56U=
 github.com/whyrusleeping/base32 v0.0.0-20170828182744-c30ac30633cc h1:BCPnHtcboadS0DvysUuJXZ4lWVv5Bh5i7+tbIyi+ck4=
 github.com/whyrusleeping/base32 v0.0.0-20170828182744-c30ac30633cc/go.mod h1:r45hJU7yEoA81k6MWNhpMj/kms0n14dkzkxYHoB96UM=
 github.com/whyrusleeping/go-keyspace v0.0.0-20160322163242-5b898ac5add1 h1:EKhdznlJHPMoKr0XTrX+IlJs1LH3lyx2nfr1dOlZ79k=

main.go

@@ -31,7 +31,9 @@ import (
 	record "github.com/libp2p/go-libp2p-record"
 	id "github.com/libp2p/go-libp2p/p2p/protocol/identify"
 	ma "github.com/multiformats/go-multiaddr"
+	"github.com/opentracing/opentracing-go"
 	prom "github.com/prometheus/client_golang/prometheus"
+	config "github.com/uber/jaeger-client-go/config"
 	"go.opencensus.io/stats/view"
 	"go.opencensus.io/zpages"
 )
@@ -132,6 +134,7 @@ func main() {
 	relay := flag.Bool("relay", false, "Enable libp2p circuit relaying for this node")
 	portBegin := flag.Int("portBegin", 0, "If set, begin port allocation here")
 	bucketSize := flag.Int("bucketSize", defaultKValue, "Specify the bucket size")
+	sampling := flag.Float64("sampling", -1, "Tracing sampling config")
 	flag.Parse()
 	id.ClientVersion = "dhtbooster/2"
 
@@ -188,6 +191,10 @@ func main() {
 		go setupMetrics(*pprofport)
 	}
 
+	if *sampling != -1 {
+		go setupTracing(*sampling)
+	}
+
 	totalprovs := 0
 	reportInterval := time.NewTicker(time.Second * 5)
 	for {
@@ -322,3 +329,24 @@ func setupMetrics(port int) error {
 	}()
 	return nil
 }
+
+func setupTracing(sampling float64) error {
+	tracerCfg := &config.Configuration{
+		Sampler: &config.SamplerConfig{
+			Type:  "const",
+			Param: sampling,
+		},
+		Reporter: &config.ReporterConfig{
+			LogSpans: true,
+		},
+	}
+	//we are ignoring the closer for now
+	tracer, _, err := tracerCfg.New("dht_node_tracer")
+	if err != nil {
+		return err
+	}
+	opentracing.SetGlobalTracer(
+		tracer,
+	)
+	return nil
+}