From b8cb3b9fe307f7567f179636e223f5d2c173e158 Mon Sep 17 00:00:00 2001
From: David Hontecillas <dhontecillas@gmail.com>
Date: Thu, 25 Apr 2024 15:37:21 +0200
Subject: [PATCH 1/3] avoid instrumenting skip paths at the http layer

---
 http/server/server.go | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/http/server/server.go b/http/server/server.go
index 0e0848f..8934c33 100644
--- a/http/server/server.go
+++ b/http/server/server.go
@@ -19,9 +19,15 @@ type trackingHandler struct {
 	metrics       *metricsHTTP
 	traces        *tracesHTTP
 	reportHeaders bool
+	config        *state.Config
 }
 
 func (h *trackingHandler) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
+	if r.URL != nil && h.config.SkipEndpoint(r.URL.Path) {
+		h.next.ServeHTTP(rw, r)
+		return
+	}
+
 	t := newTracking()
 	t.ctx = r.Context()
 	if h.prop != nil {
@@ -84,5 +90,6 @@ func NewTrackingHandler(next http.Handler) http.Handler {
 		metrics:       m,
 		traces:        t,
 		reportHeaders: gCfg.ReportHeaders,
+		config:        otelCfg,
 	}
 }

From 40af4a8b306fab03dc508ccc25dd458aed969ef4 Mon Sep 17 00:00:00 2001
From: David Hontecillas <dhontecillas@gmail.com>
Date: Thu, 25 Apr 2024 16:56:04 +0200
Subject: [PATCH 2/3] fix: use Config as interface in http layer

---
 http/server/server.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/http/server/server.go b/http/server/server.go
index 8934c33..767557d 100644
--- a/http/server/server.go
+++ b/http/server/server.go
@@ -19,7 +19,7 @@ type trackingHandler struct {
 	metrics       *metricsHTTP
 	traces        *tracesHTTP
 	reportHeaders bool
-	config        *state.Config
+	config        state.Config
 }
 
 func (h *trackingHandler) ServeHTTP(rw http.ResponseWriter, r *http.Request) {

From bfd49a2adf1ca64941694a7a86ba998fe73380fb Mon Sep 17 00:00:00 2001
From: David Hontecillas <dhontecillas@gmail.com>
Date: Thu, 25 Apr 2024 17:25:12 +0200
Subject: [PATCH 3/3] add script to test skip instrumentation in skip paths

---
 example/client/make_skip_paths_requests.sh | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 example/client/make_skip_paths_requests.sh

diff --git a/example/client/make_skip_paths_requests.sh b/example/client/make_skip_paths_requests.sh
new file mode 100644
index 0000000..26c6162
--- /dev/null
+++ b/example/client/make_skip_paths_requests.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+
+for i in {1..1000}
+do
+    # curl localhost:54444/fake/fsf
+    # curl localhost:54444/combination/2
+    echo -e "\n/__stats/"
+    curl localhost:54444/__stats/
+    echo -e "\n/__health"
+    curl localhost:54444/__health
+    echo -e "\n/__echo/"
+    curl localhost:54444/__echo/
+    # uncomment this to see real 404 not found error codes
+    # echo -e "\n/this_does_not_exist/"
+    # curl localhost:54444/this_does_not_exist/
+    echo -e "\n----\n"
+    sleep 1
+done