From b9e776ae7463bc4cf301d3af20e25f08044df38b Mon Sep 17 00:00:00 2001
From: "D. Berge" <dberge@aaltronav.eu>
Date: Fri, 1 Sep 2023 12:28:55 +0200
Subject: [PATCH] Use ETag middleware

---
 lib/www/server/api/index.js | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/lib/www/server/api/index.js b/lib/www/server/api/index.js
index ebd8daf..b37edd0 100644
--- a/lib/www/server/api/index.js
+++ b/lib/www/server/api/index.js
@@ -81,6 +81,9 @@ app.map({
 
 app.use(mw.auth.authentify);
 
+// Don't process the request if the data hasn't changed
+app.use(mw.etag.ifNoneMatch);
+
 // We must be authenticated before we can access these
 app.map({
 	'/project': {
@@ -260,12 +263,12 @@ app.map({
 	},
 	'/queue/outgoing/': {
 		'asaqc': {
-			get: [ mw.queue.asaqc.get ],
+			get: [ mw.etag.noSave, mw.queue.asaqc.get ],
 			post: [ mw.auth.access.write, mw.queue.asaqc.post ],
 			'/project/:project': {
-				get: [ mw.queue.asaqc.get ],
+				get: [ mw.etag.noSave, mw.queue.asaqc.get ],
 				'/sequence/:sequence': {
-					get: [ mw.queue.asaqc.get ],
+					get: [ mw.etag.noSave, mw.queue.asaqc.get ],
 				}
 			},
 			'/:id': {
@@ -289,6 +292,10 @@ app.map({
 //
 });
 
+app.use(mw.etag.save);
+// Invalidate cache on database events
+mw.etag.watch(app);
+
 // Generic error handler. Stops stack dumps
 // being sent to clients.
 app.use(function (err, req, res, next) {