introspection: add delta pprof endpoints

This adds the delta pprof endpoints that pyroscope can make use of.

Signed-off-by: Hank Donnay <hdonnay@redhat.com>

go.mod

@@ -13,6 +13,7 @@ require (
 	github.com/klauspost/compress v1.16.7
 	github.com/ldelossa/responserecorder v1.0.2-0.20210711162258-40bec93a9325
 	github.com/prometheus/client_golang v1.16.0
+	github.com/pyroscope-io/godeltaprof v0.1.1
 	github.com/quay/clair/config v1.3.0
 	github.com/quay/claircore v1.5.8
 	github.com/quay/zlog v1.1.4

go.sum

@@ -183,6 +183,8 @@ github.com/prometheus/common v0.42.0 h1:EKsfXEYo4JpWMHH5cg+KOUWeuJSov1Id8zGR8eeI
 github.com/prometheus/common v0.42.0/go.mod h1:xBwqVerjNdUDjgODMpudtOMwlOwf2SaTr1yjz4b7Zbc=
 github.com/prometheus/procfs v0.10.1 h1:kYK1Va/YMlutzCGazswoHKo//tZVlFpKYh+PymziUAg=
 github.com/prometheus/procfs v0.10.1/go.mod h1:nwNm2aOCAYw8uTR/9bWRREkZFxAUcWzPHWJq+XBB/FM=
+github.com/pyroscope-io/godeltaprof v0.1.1 h1:+Mmi+b9gR3s/qufuQSxOBjyXZR1fmvS/C12Q73PIPvw=
+github.com/pyroscope-io/godeltaprof v0.1.1/go.mod h1:psMITXp90+8pFenXkKIpNhrfmI9saQnPbba27VIaiQE=
 github.com/quay/alas v1.0.1 h1:MuFpGGXyZlDD7+F/hrnMZmzhS8P2bjRzX9DyGmyLA+0=
 github.com/quay/alas v1.0.1/go.mod h1:pseepSrG9pwry1joG7RO/RNRFJaWqiqx9qeoomeYwEk=
 github.com/quay/clair/config v1.3.0 h1:UqJIwvgHaWj6yTWrpVnYnlEIKcVYxJItlEF2EsCnw5s=

introspection/server.go

@@ -9,6 +9,7 @@ import (
 	"time"
 
 	"github.com/prometheus/client_golang/prometheus/promhttp"
+	deltapprof "github.com/pyroscope-io/godeltaprof/http/pprof"
 	"github.com/quay/clair/config"
 	"github.com/quay/zlog"
 	"go.opentelemetry.io/otel"
@@ -216,6 +217,9 @@ func (i *Server) withDiagnostics(_ context.Context) error {
 	i.HandleFunc("/debug/pprof/profile", pprof.Profile)
 	i.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
 	i.HandleFunc("/debug/pprof/trace", pprof.Trace)
+	i.HandleFunc("/debug/pprof/delta_heap", deltapprof.Heap)
+	i.HandleFunc("/debug/pprof/delta_block", deltapprof.Block)
+	i.HandleFunc("/debug/pprof/delta_mutex", deltapprof.Mutex)
 	return nil
 }