feat(otlp): experimental otlp support

example/main.go

@@ -3,11 +3,13 @@ package main
 import (
 	"context"
 	"fmt"
-	"github.com/pyroscope-io/client/pyroscope"
 	"os"
-	"runtime"
 	"runtime/pprof"
+
+	"runtime"
 	"sync"
+
+	"github.com/pyroscope-io/client/pyroscope"
 )
 
 //go:noinline
@@ -43,16 +45,21 @@ func slowFunction(c context.Context, wg *sync.WaitGroup) {
 }
 
 func main() {
+	sa := os.Getenv("SERVER_ADDRESS")
+	if sa == "" {
+		sa = "https://localhost:4317"
+	}
 	runtime.SetMutexProfileFraction(5)
 	runtime.SetBlockProfileRate(5)
 	pyroscope.Start(pyroscope.Config{
 		ApplicationName:   "simple.golang.app-new",
-		ServerAddress:     "http://localhost:4040",
+		ServerAddress:     sa,
 		Logger:            pyroscope.StandardLogger,
 		AuthToken:         os.Getenv("PYROSCOPE_AUTH_TOKEN"),
 		TenantID:          os.Getenv("PYROSCOPE_TENANT_ID"),
 		BasicAuthUser:     os.Getenv("PYROSCOPE_BASIC_AUTH_USER"),
 		BasicAuthPassword: os.Getenv("PYROSCOPE_BASIC_AUTH_PASSWORD"),
+		UseOTLP:           true,
 		ProfileTypes: []pyroscope.ProfileType{
 			pyroscope.ProfileCPU,
 			pyroscope.ProfileInuseObjects,

go.mod

@@ -1,5 +1,27 @@
 module github.com/pyroscope-io/client
 
-go 1.17
+go 1.19
 
-require github.com/pyroscope-io/godeltaprof v0.1.0
+replace go.opentelemetry.io/collector/pdata => ../opentelemetry-collector/pdata
+
+require (
+	github.com/pyroscope-io/godeltaprof v0.1.0
+	go.opentelemetry.io/collector/pdata v0.0.0-00010101000000-000000000000
+	google.golang.org/grpc v1.57.0
+)
+
+require (
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/jzelinskie/must v0.0.1 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
+	golang.org/x/exp v0.0.0-20230626212559-97b1e661b5df // indirect
+	golang.org/x/net v0.10.0 // indirect
+	golang.org/x/sys v0.8.0 // indirect
+	golang.org/x/text v0.9.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20230525234030-28d5490b6b19 // indirect
+	google.golang.org/protobuf v1.30.0 // indirect
+)

go.sum

@@ -1,2 +1,75 @@
+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/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
+github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q=
+github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
+github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg=
+github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
+github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
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+github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
+github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
+github.com/jzelinskie/must v0.0.1 h1:LT7fxrQCW9yWDkjnF75XFvODjKb6Su7qlx2LO8967Y8=
+github.com/jzelinskie/must v0.0.1/go.mod h1:BTPQ0S/fIbENkk9zFU4JBtdtB+B4vibfTyeDC48z6zc=
+github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8=
+github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
+github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
+github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
+github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
+github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9Gz0M=
+github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
+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/pyroscope-io/godeltaprof v0.1.0 h1:UBqtjt0yZi4jTxqZmLAs34XG6ycS3vUTlhEUSq4NHLE=
 github.com/pyroscope-io/godeltaprof v0.1.0/go.mod h1:psMITXp90+8pFenXkKIpNhrfmI9saQnPbba27VIaiQE=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
+github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
+github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
+go.uber.org/multierr v1.11.0 h1:blXXJkSxSSfBVBlC76pxqeO+LN3aDfLQo+309xJstO0=
+go.uber.org/multierr v1.11.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/exp v0.0.0-20230626212559-97b1e661b5df h1:UA2aFVmmsIlefxMk29Dp2juaUSth8Pyn3Tq5Y5mJGME=
+golang.org/x/exp v0.0.0-20230626212559-97b1e661b5df/go.mod h1:FXUEEKJgO7OQYeo8N01OfiKP8RXMtf6e8aTskBGqWdc=
+golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
+golang.org/x/net v0.10.0 h1:X2//UzNDwYmtCLn7To6G58Wr6f5ahEAQgKNzv9Y951M=
+golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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+golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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+google.golang.org/genproto/googleapis/rpc v0.0.0-20230525234030-28d5490b6b19 h1:0nDDozoAU19Qb2HwhXadU8OcsiO/09cnTqhUtq2MEOM=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20230525234030-28d5490b6b19/go.mod h1:66JfowdXAEgad5O9NnYcsNPLCPZJD++2L9X0PCMODrA=
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+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=

pyroscope/api.go

@@ -27,6 +27,7 @@ type Config struct {
 	// Deprecated: the field is ignored and does nothing
 	DisableCumulativeMerge bool
 	HTTPHeaders            map[string]string
+	UseOTLP                bool
 }
 
 type Profiler struct {
@@ -63,7 +64,7 @@ func Start(cfg Config) (*Profiler, error) {
 		Timeout:           30 * time.Second,
 		Logger:            cfg.Logger,
 	}
-	uploader, err := remote.NewRemote(rc)
+	uploader, err := remote.NewRemote(rc, cfg.UseOTLP)
 	if err != nil {
 		return nil, err
 	}

upstream/remote/remote.go

@@ -2,6 +2,7 @@
 
 import (
 	"bytes"
+	"context"
 	"encoding/json"
 	"errors"
 	"fmt"
@@ -17,6 +18,11 @@
 	"time"
 
 	"github.com/pyroscope-io/client/upstream"
+	"go.opentelemetry.io/collector/pdata/pprofile"
+	"go.opentelemetry.io/collector/pdata/pprofile/pprofileotlp"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
+	"google.golang.org/grpc/metadata"
 )
 
 var (
@@ -26,10 +32,11 @@
 const cloudHostnameSuffix = "pyroscope.cloud"
 
 type Remote struct {
-	cfg    Config
-	jobs   chan *upstream.UploadJob
-	client *http.Client
-	logger Logger
+	cfg     Config
+	jobs    chan *upstream.UploadJob
+	client  *http.Client
+	logger  Logger
+	useOTLP bool
 
 	done chan struct{}
 	wg   sync.WaitGroup
@@ -55,7 +62,7 @@
 	Errorf(_ string, _ ...interface{})
 }
 
-func NewRemote(cfg Config) (*Remote, error) {
+func NewRemote(cfg Config, useOTLP bool) (*Remote, error) {
 	r := &Remote{
 		cfg:  cfg,
 		jobs: make(chan *upstream.UploadJob, 20),
@@ -73,8 +80,9 @@
 			},
 			Timeout: cfg.Timeout,
 		},
-		logger: cfg.Logger,
-		done:   make(chan struct{}),
+		logger:  cfg.Logger,
+		useOTLP: useOTLP,
+		done:    make(chan struct{}),
 	}
 
 	// parse the upstream address
@@ -193,6 +201,24 @@
 		request.Header.Set(k, v)
 	}
 
+	if r.useOTLP {
+		// TODO: reuse connection
+		cc, err := grpc.Dial(u.Host,
+			grpc.WithTransportCredentials(insecure.NewCredentials()),
+			grpc.WithBlock())
+		if err != nil {
+			return err
+		}
+		oprof := pprofile.PprofToOprof(j.Profile, "arrays")
+		er := pprofileotlp.NewExportRequestFromProfiles(oprof)
+
+		var header metadata.MD
+		client := pprofileotlp.NewGRPCClient(cc)
+
+		_, err = client.Export(context.Background(), er, grpc.Header(&header))
+		return err
+	}
+
 	// do the request and get the response
 	response, err := r.client.Do(request)
 	if err != nil {