From ff2cd6993302d41f9564b64afd527e5279091360 Mon Sep 17 00:00:00 2001
From: serguun42 <s42@serguun42.ru>
Date: Mon, 11 Dec 2023 00:17:13 +0300
Subject: [PATCH] Update Grafana paths

---
 .github/workflows/build.yml    |  1 +
 docker-compose.yml             |  1 +
 monitoring/grafana/grafana.ini |  4 +++
 panel/panel.config.json        |  1 +
 panel/panel.js                 | 46 +++++++++++++++-------------------
 panel/types/index.d.ts         |  1 +
 6 files changed, 28 insertions(+), 26 deletions(-)
 create mode 100644 monitoring/grafana/grafana.ini

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 45bfc12..c2f5c55 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -22,6 +22,7 @@ jobs:
           cp $CONFIGS_LOCATION_BASE/scrapper.config.json ./scrapper/;
           cp $CONFIGS_LOCATION_BASE/backend.config.json ./backend/;
           cp $CONFIGS_LOCATION_BASE/panel.config.json ./panel/;
+          cp $CONFIGS_LOCATION_BASE/grafana.ini ./monitoring/grafana/;
           cp $CONFIGS_LOCATION_BASE/healthcheck.config.json ./healthcheck/;
           cp $CONFIGS_LOCATION_BASE/telegram-bot.config.json ./telegram/
           [[ -f $CONFIGS_LOCATION_BASE/tag-manager.html ]] &&
diff --git a/docker-compose.yml b/docker-compose.yml
index a8263d9..c4c3aa2 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -124,6 +124,7 @@ services:
       GF_AUTH_ANONYMOUS_ENABLED: true
       GF_AUTH_ANONYMOUS_ORG_ROLE: Admin
     volumes:
+      - ./monitoring/grafana/grafana.ini:/etc/grafana/grafana.ini
       - ./monitoring/grafana/datasource.yml:/etc/grafana/provisioning/datasources/datasource.yml
       - ./monitoring/grafana/dashboard.yml:/etc/grafana/provisioning/dashboards/dashboard.yml
       - ./monitoring/grafana/node-dashboard.json:/etc/grafana/provisioning/dashboards/node-dashboard.json
diff --git a/monitoring/grafana/grafana.ini b/monitoring/grafana/grafana.ini
new file mode 100644
index 0000000..de756e5
--- /dev/null
+++ b/monitoring/grafana/grafana.ini
@@ -0,0 +1,4 @@
+[server]
+domain = panel.domain.tld
+root_url = %(protocol)s://%(domain)s:%(http_port)s/grafana/
+serve_from_sub_path = true
diff --git a/panel/panel.config.json b/panel/panel.config.json
index 992ac63..7f30a7f 100644
--- a/panel/panel.config.json
+++ b/panel/panel.config.json
@@ -5,6 +5,7 @@
   "KEYCLOAK_CLIENT_SECRET": "client-secret",
 
   "GRAFANA_ORIGIN": "http://mss-grafana:3000",
+  "GRAFANA_PUBLIC_URL": "https://panel.domain.tld/grafana/",
 
   "PANEL_ORIGIN": "https://panel.domain.tld",
   "PANEL_COOKIE_TTL_SECONDS": 7200,
diff --git a/panel/panel.js b/panel/panel.js
index 084cced..46f7746 100644
--- a/panel/panel.js
+++ b/panel/panel.js
@@ -44,6 +44,25 @@ createServer((req, res) => {
 
   validateAccessToken(cookies.access_token)
     .then(() => {
+      if (path[0] === "grafana") {
+        fetch(new URL(requestedURL, PANEL_CONFIG.GRAFANA_ORIGIN).href, {
+          method,
+          headers: JSON.parse(JSON.stringify(req.headers)),
+          body: method === "GET" ? undefined : req
+        })
+          .then((grafanaResponse) => {
+            res.statusCode = grafanaResponse.status;
+            res.statusMessage = grafanaResponse.statusText;
+
+            Array.from(grafanaResponse.headers.entries()).forEach(([name, value]) => res.setHeader(name, value));
+
+            grafanaResponse.body.pipe(res);
+          })
+          .catch(() => sendError());
+
+        return;
+      }
+
       if (path[0] === "params-panel" || path[0] === "favicon.ico") {
         if (path[1] === "api" && path[2] === "list") {
           if (method !== "GET") {
@@ -96,34 +115,9 @@ createServer((req, res) => {
           res.end("405 Method Not Allowed");
           return;
         }
-
-        serveStatic(req, res);
-        return;
       }
 
-      const sendingHeaders = req.headers;
-      sendingHeaders.host = "grafana";
-      delete sendingHeaders["X-Real-IP"];
-      delete sendingHeaders["Forwarded"];
-      delete sendingHeaders["X-Forwarded-For"];
-      delete sendingHeaders["X-Forwarded-Proto"];
-      delete sendingHeaders["X-Forwarded-Host"];
-      delete sendingHeaders["X-Forwarded-Port"];
-
-      fetch(new URL(requestedURL, PANEL_CONFIG.GRAFANA_ORIGIN).href, {
-        method,
-        headers: sendingHeaders,
-        body: method === "GET" ? undefined : req
-      })
-        .then((grafanaResponse) => {
-          res.statusCode = grafanaResponse.status;
-          res.statusMessage = grafanaResponse.statusText;
-
-          for (const [name, value] of grafanaResponse.headers) res.setHeader(name, value);
-
-          grafanaResponse.body.pipe(res);
-        })
-        .catch(() => sendError());
+      serveStatic(req, res);
     })
     .catch(() => {
       if ("session_state" in queries && queries.code) {
diff --git a/panel/types/index.d.ts b/panel/types/index.d.ts
index fa041ed..bf65188 100644
--- a/panel/types/index.d.ts
+++ b/panel/types/index.d.ts
@@ -5,6 +5,7 @@ export type PanelConfig = {
   KEYCLOAK_CLIENT_SECRET: string;
 
   GRAFANA_ORIGIN: string;
+  GRAFANA_PUBLIC_URL: string;
 
   PANEL_ORIGIN: string;
   PANEL_COOKIE_TTL_SECONDS: number;