From 9a552307a98c77cd064a3bef99bf9349b780ae13 Mon Sep 17 00:00:00 2001
From: wallet77 <wallet77@gmail.com>
Date: Mon, 11 Dec 2023 15:07:21 +0100
Subject: [PATCH] fix: add config to disable exemplar

---
 index.js         | 3 +++
 src/http_hook.js | 9 +++++++--
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/index.js b/index.js
index 5382354..f563d29 100644
--- a/index.js
+++ b/index.js
@@ -34,6 +34,9 @@ class APM {
         if (!Object.prototype.hasOwnProperty.call(config, 'HTTPHook')) {
             config.HTTPHook = true
         }
+        if (!Object.prototype.hasOwnProperty.call(config, 'enableExemplars')) {
+            config.enableExemplars = true
+        }
     }
 
     init () {
diff --git a/src/http_hook.js b/src/http_hook.js
index 57b5da1..8f96574 100644
--- a/src/http_hook.js
+++ b/src/http_hook.js
@@ -9,7 +9,7 @@ const init = function (client, config) {
             name: 'http_request_duration_seconds',
             help: 'request duration in seconds',
             labelNames: ['status', 'method', 'route'],
-            enableExemplars: true,
+            enableExemplars: config.enableExemplars,
             buckets: config.HTTP_DURATION_BUCKETS || [0.01, 0.02, 0.05, 0.1, 0.2, 0.5, 1, 2]
         },
         summary: {
@@ -49,7 +49,12 @@ const init = function (client, config) {
                 const value = delta[0] + delta[1] / 1e9
 
                 routeSum.observe(value)
-                routeHist.observe({ labels, value, exemplarLabels })
+
+                if (config.enableExemplars) {
+                    routeHist.observe({ labels, value, exemplarLabels })
+                } else {
+                    routeHist.observe(labels, value)
+                }
             })
         }
         return emit.apply(this, arguments)