From 4637509b3d27cf7de7c0ca1ecb59cc173d86f480 Mon Sep 17 00:00:00 2001
From: Cory McWilliams <cory@unprompted.com>
Date: Sat, 15 Jan 2022 21:48:04 +0000
Subject: [PATCH] Enumerate apps without walking all DB keys.

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@3768 ed5197a5-7fde-0310-b194-c3ffbd925b24
---
 core/core.js | 26 ++++++++++++++++++++------
 1 file changed, 20 insertions(+), 6 deletions(-)

diff --git a/core/core.js b/core/core.js
index 00facd83..49793fd7 100644
--- a/core/core.js
+++ b/core/core.js
@@ -193,12 +193,17 @@ async function getProcessBlob(blobId, key, options) {
 					'getUser': getUser.bind(null, process, process),
 					'user': getUser(process, process),
 					'apps': function() {
-						var apps = process.credentials &&
+						if (process.credentials &&
 							process.credentials.session &&
-							process.credentials.session.name ?
-								new Database(process.credentials.session.name).getLike('path:%') :
-								{};
-						return Object.fromEntries(Object.keys(apps).map(key => [key.substring(5), apps[key]]));
+							process.credentials.session.name) {
+							var db = new Database(process.credentials.session.name);
+							try {
+								var names = JSON.parse(db.get('apps'));
+								return Object.fromEntries(names.map(name => [name, db.get('path:' + name)]));
+							} catch {
+							}
+						}
+						return {};
 					},
 				}
 			};
@@ -478,7 +483,16 @@ async function blobHandler(request, response, blobId, uri) {
 					return;
 				}
 				var database = new Database(user);
-				await database.set('path:' + app, newBlobId);
+				var apps = new Set();
+				try {
+					apps = new Set(JSON.parse(database.get('apps')));
+				} catch {
+				}
+				if (!apps.has(app)) {
+					apps.add(app);
+					database.set('apps', JSON.stringify([...apps]));
+				}
+				database.set('path:' + app, newBlobId);
 			}
 
 			response.writeHead(200, {"Content-Type": "text/plain; charset=utf-8"});