feat: add Server-Timing headers

go.mod

@@ -18,6 +18,7 @@ require (
 	github.com/libp2p/go-libp2p v0.26.3
 	github.com/libp2p/go-libp2p-kad-dht v0.21.1
 	github.com/libp2p/go-libp2p-routing-helpers v0.4.0
+	github.com/mitchellh/go-server-timing v1.0.1
 	github.com/multiformats/go-multicodec v0.8.1
 	github.com/multiformats/go-multihash v0.2.1
 	github.com/prometheus/client_golang v1.14.0
@@ -44,13 +45,15 @@ require (
 	github.com/docker/go-units v0.5.0 // indirect
 	github.com/dustin/go-humanize v1.0.0 // indirect
 	github.com/elastic/gosigar v0.14.2 // indirect
+	github.com/felixge/httpsnoop v1.0.0 // indirect
 	github.com/flynn/noise v1.0.0 // indirect
 	github.com/francoispqt/gojay v1.2.13 // indirect
 	github.com/gabriel-vasile/mimetype v1.4.1 // indirect
 	github.com/go-logr/logr v1.2.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0 // indirect
 	github.com/godbus/dbus/v5 v5.1.0 // indirect
+	github.com/golang/gddo v0.0.0-20180823221919-9d8ff1c67be5 // indirect
 	github.com/golang/mock v1.6.0 // indirect
 	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/google/gopacket v1.1.19 // indirect

go.sum

@@ -63,6 +63,8 @@ github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymF
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
+github.com/felixge/httpsnoop v1.0.0 h1:gh8fMGz0rlOv/1WmRZm7OgncIOTsAj21iNJot48omJQ=
+github.com/felixge/httpsnoop v1.0.0/go.mod h1:3+D9sFq0ahK/JeJPhCBUV1xlf4/eIYrUQaxulT0VzX8=
 github.com/filecoin-saturn/caboose v0.0.0-20230329203940-7c08345c244d h1:ok/4Ffp2ETy6l5kBRUumvxzGz/Hxqq2iTfmGLslZbBc=
 github.com/filecoin-saturn/caboose v0.0.0-20230329203940-7c08345c244d/go.mod h1:u8END6RLUG9ZWudtVHAOOg7ptGiAgKjf/QnNOUOC160=
 github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568/go.mod h1:xEzjJPgXI435gkrCt3MPfRiAkVrwSbHsst4LCFVfpJc=
@@ -111,6 +113,8 @@ github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7a
 github.com/gogo/protobuf v1.3.1/go.mod h1:SlYgWuQ5SjCEi6WLHjHCa1yvBfUnHcTbrrZtXPKa29o=
 github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
 github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q=
+github.com/golang/gddo v0.0.0-20180823221919-9d8ff1c67be5 h1:yrv1uUvgXH/tEat+wdvJMRJ4g51GlIydtDpU9pFjaaI=
+github.com/golang/gddo v0.0.0-20180823221919-9d8ff1c67be5/go.mod h1:xEhNfoBDX1hzLm2Nf80qUvZ2sVwoMZ8d6IE2SrsQfh4=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
 github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da h1:oI5xCqsCo564l8iNU+DwB5epxmsaqB+rhGL0m5jtYqE=
@@ -139,6 +143,7 @@ github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5a
 github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.4.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.3/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
@@ -348,6 +353,8 @@ github.com/minio/sha256-simd v0.0.0-20190131020904-2d45a736cd16/go.mod h1:2FMWW+
 github.com/minio/sha256-simd v0.1.1-0.20190913151208-6de447530771/go.mod h1:B5e1o+1/KgNmWrSQK08Y6Z1Vb5pwIktudl0J58iy0KM=
 github.com/minio/sha256-simd v1.0.0 h1:v1ta+49hkWZyvaKwrQB8elexRqm6Y0aMLjCNsrYxo6g=
 github.com/minio/sha256-simd v1.0.0/go.mod h1:OuYzVNI5vcoYIAmbIvHPl3N3jUzVedXbKy5RFepssQM=
+github.com/mitchellh/go-server-timing v1.0.1 h1:f00/aIe8T3MrnLhQHu3tSWvnwc5GV/p5eutuu3hF/tE=
+github.com/mitchellh/go-server-timing v1.0.1/go.mod h1:Mo6GKi9FSLwWFAMn3bqVPWe20y5ri5QGQuO9D9MCOxk=
 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=

handlers.go

@@ -18,6 +18,7 @@ import (
 	bstore "github.com/ipfs/boxo/blockstore"
 	"github.com/ipfs/boxo/coreiface/path"
 	"github.com/ipfs/boxo/gateway"
+	servertiming "github.com/mitchellh/go-server-timing"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 )
@@ -162,6 +163,7 @@ func makeGatewayHandler(bs bstore.Blockstore, kuboRPC []string, port int, blockC
 	// Construct the HTTP handler for the gateway.
 	handler := withConnect(mux)
 	handler = http.Handler(gateway.WithHostname(handler, gwAPI, publicGateways, noDNSLink))
+	handler = servertiming.Middleware(handler, nil)
 	handler = promhttp.InstrumentHandlerResponseSize(sum, handler)
 
 	// Add logging