Merge pull request #413 from grafana/add-fgprof

Adds fgprof to Phlare

go.mod

@@ -8,6 +8,7 @@ require (
 	github.com/cespare/xxhash/v2 v2.1.2
 	github.com/drone/envsubst v1.0.3
 	github.com/dustin/go-humanize v1.0.0
+	github.com/felixge/fgprof v0.9.2
 	github.com/go-kit/log v0.2.1
 	github.com/gogo/status v1.1.0
 	github.com/google/go-cmp v0.5.9
@@ -144,6 +145,7 @@ require (
 	github.com/google/gnostic v0.5.7-v3refs // indirect
 	github.com/google/go-querystring v1.1.0 // indirect
 	github.com/google/gofuzz v1.2.0 // indirect
+	github.com/google/pprof v0.0.0-20220729232143-a41b82acbcb1 // indirect
 	github.com/googleapis/gax-go/v2 v2.4.0 // indirect
 	github.com/googleapis/go-type-adapters v1.0.0 // indirect
 	github.com/gophercloud/gophercloud v0.25.0 // indirect

go.sum

@@ -474,6 +474,7 @@ github.com/fatih/color v1.9.0/go.mod h1:eQcE1qtQxscV5RaZvpXrrb8Drkc3/DdQ+uUYCNjL
 github.com/fatih/color v1.13.0 h1:8LOYc1KYPPmyKMuN8QV2DNRWNbLo6LZ0iLs8+mlH53w=
 github.com/fatih/color v1.13.0/go.mod h1:kLAiJbzzSOZDVNGyDpeOxJ47H46qBXwg5ILebYFFOfk=
 github.com/felixge/fgprof v0.9.2 h1:tAMHtWMyl6E0BimjVbFt7fieU6FpjttsZN7j0wT5blc=
+github.com/felixge/fgprof v0.9.2/go.mod h1:+VNi+ZXtHIQ6wIw6bUT8nXQRefQflWECoFyRealT5sg=
 github.com/felixge/httpsnoop v1.0.1/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
 github.com/felixge/httpsnoop v1.0.2/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
 github.com/felixge/httpsnoop v1.0.3 h1:s/nj+GCswXYzN5v2DpNMuMQYe+0DDwt5WVCU6CWBdXk=
@@ -769,8 +770,10 @@ github.com/google/pprof v0.0.0-20200229191704-1ebb73c60ed3/go.mod h1:ZgVRPoUq/hf
 github.com/google/pprof v0.0.0-20200430221834-fc25d7d30c6d/go.mod h1:ZgVRPoUq/hfqzAqh7sHMqb3I9Rq5C59dIz2SbBwJ4eM=
 github.com/google/pprof v0.0.0-20200708004538-1a94d8640e99/go.mod h1:ZgVRPoUq/hfqzAqh7sHMqb3I9Rq5C59dIz2SbBwJ4eM=
 github.com/google/pprof v0.0.0-20210226084205-cbba55b83ad5/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
+github.com/google/pprof v0.0.0-20211214055906-6f57359322fd/go.mod h1:KgnwoLYCZ8IQu3XUZ8Nc/bM9CCZFOyjUNOSygVozoDg=
 github.com/google/pprof v0.0.0-20220218203455-0368bd9e19a7/go.mod h1:KgnwoLYCZ8IQu3XUZ8Nc/bM9CCZFOyjUNOSygVozoDg=
 github.com/google/pprof v0.0.0-20220729232143-a41b82acbcb1 h1:8pyqKJvrJqUYaKS851Ule26pwWvey6IDMiczaBLDKLQ=
+github.com/google/pprof v0.0.0-20220729232143-a41b82acbcb1/go.mod h1:gSuNB+gJaOiQKLEZ+q+PK9Mq3SOzhRcw2GsGS/FhYDk=
 github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
 github.com/google/uuid v1.0.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=

pkg/phlare/modules.go

@@ -7,6 +7,7 @@ import (
 	"os"
 
 	grpchealth "github.com/bufbuild/connect-grpchealth-go"
+	"github.com/felixge/fgprof"
 	"github.com/go-kit/log"
 	"github.com/go-kit/log/level"
 	"github.com/grafana/dskit/kv/codec"
@@ -269,6 +270,8 @@ func (f *Phlare) initServer() (services.Service, error) {
 
 	// register grpc-gateway api
 	f.Server.HTTP.NewRoute().PathPrefix("/api").Handler(f.grpcGatewayMux)
+	// register fgprof
+	f.Server.HTTP.Path("/debug/fgprof").Handler(fgprof.Handler())
 
 	// register status service providing config and buildinfo at grpc gateway
 	if err := commonv1.RegisterStatusServiceHandlerServer(context.Background(), f.grpcGatewayMux, f.statusService()); err != nil {