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Speed up GetNodeRights() using 10 second caching.

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Ylian Saint-Hilaire 2022-01-09 13:19:49 -08:00
parent 1f19ffe177
commit 42a0ff960b
1 changed files with 28 additions and 3 deletions
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31
webserver.js
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@ -7249,17 +7249,39 @@ module.exports.CreateWebServer = function (parent, db, args, certificates, doneF
return false;
}
var GetNodeRightsCache = {};
var GetNodeRightsCacheCount = 0;
// Return the user rights for a given node
obj.GetNodeRights = function (user, mesh, nodeid) {
if ((user == null) || (mesh == null) || (nodeid == null)) { return 0; }
if (typeof user == 'string') { user = obj.users[user]; }
if (user == null) { return 0; }
var meshid;
if (typeof mesh == 'string') { meshid = mesh; } else if ((typeof mesh == 'object') && (typeof mesh._id == 'string')) { meshid = mesh._id; } else return 0;
// Check if we have this in the cache
const cacheid = user._id + '/' + meshid + '/' + nodeid;
const cache = GetNodeRightsCache[cacheid];
if (cache != null) { if (cache.t > Date.now()) { return cache.o; } else { GetNodeRightsCacheCount--; } } // Cache hit, or we need to update the cache
if (GetNodeRightsCacheCount > 2000) { GetNodeRightsCache = {}; GetNodeRightsCacheCount = 0; } // From time to time, flush the cache
var r = obj.GetMeshRights(user, mesh);
if (r == 0xFFFFFFFF) return removeUserRights(r, user);
if (r == 0xFFFFFFFF) {
const out = removeUserRights(r, user);
GetNodeRightsCache[cacheid] = { t: Date.now() + 10000, o: out };
GetNodeRightsCacheCount++;
return out;
}
// Check direct device rights using device data
if ((user.links != null) && (user.links[nodeid] != null)) { r |= user.links[nodeid].rights; } // TODO: Deal with reverse permissions
if (r == 0xFFFFFFFF) return removeUserRights(r, user);
if (r == 0xFFFFFFFF) {
const out = removeUserRights(r, user);
GetNodeRightsCache[cacheid] = { t: Date.now() + 10000, o: out };
GetNodeRightsCacheCount++;
return out;
}
// Check direct device rights thru a user group
for (var i in user.links) {
@ -7269,7 +7291,10 @@ module.exports.CreateWebServer = function (parent, db, args, certificates, doneF
}
}
return removeUserRights(r, user);
const out = removeUserRights(r, user);
GetNodeRightsCache[cacheid] = { t: Date.now() + 10000, o: out };
GetNodeRightsCacheCount++;
return out;
}
// Returns a list of displatch targets for a given mesh