feat: test psql without defineProperty (#7815)

* feat: test psql without defineProperty

* feat: refactor psql

remove .bind calls, use module.pool.query directly
move requires to top of file
move promisify to bottom so .init etc are promisified

* feat: mongodb

move requires to bottom

* feat: redis

src/database/mongo.js

@@ -10,7 +10,6 @@ var _ = require('lodash');
 var semver = require('semver');
 var prompt = require('prompt');
 var utils = require('../utils');
-var client;
 
 var mongoModule = module.exports;
 
@@ -110,23 +109,13 @@ mongoModule.getConnectionOptions = function (mongo) {
 mongoModule.init = function (callback) {
 	callback = callback || function () { };
 
-	mongoModule.connect(nconf.get('mongo'), function (err, _client) {
+	mongoModule.connect(nconf.get('mongo'), function (err, client) {
 		if (err) {
 			winston.error('NodeBB could not connect to your Mongo database. Mongo returned the following error', err);
 			return callback(err);
 		}
-		client = _client;
-		var db = client.db();
-		mongoModule.client = db;
 
-		require('./mongo/main')(db, mongoModule);
-		require('./mongo/hash')(db, mongoModule);
-		require('./mongo/sets')(db, mongoModule);
-		require('./mongo/sorted')(db, mongoModule);
-		require('./mongo/list')(db, mongoModule);
-		require('./mongo/transaction')(db, mongoModule);
-
-		mongoModule.async = require('../promisify')(mongoModule, ['client', 'sessionStore']);
+		mongoModule.client = client.db();
 		callback();
 	});
 };
@@ -280,7 +269,7 @@ function getCollectionStats(db, callback) {
 
 mongoModule.close = function (callback) {
 	callback = callback || function () {};
-	client.close(function (err) {
+	mongoModule.client.close(function (err) {
 		callback(err);
 	});
 };
@@ -289,3 +278,12 @@ mongoModule.socketAdapter = function () {
 	var mongoAdapter = require('socket.io-adapter-mongo');
 	return mongoAdapter(mongoModule.getConnectionString());
 };
+
+require('./mongo/main')(mongoModule);
+require('./mongo/hash')(mongoModule);
+require('./mongo/sets')(mongoModule);
+require('./mongo/sorted')(mongoModule);
+require('./mongo/list')(mongoModule);
+require('./mongo/transaction')(mongoModule);
+
+mongoModule.async = require('../promisify')(mongoModule, ['client', 'sessionStore']);

src/database/mongo/hash.js

@@ -1,6 +1,6 @@
 'use strict';
 
-module.exports = function (db, module) {
+module.exports = function (module) {
 	var helpers = require('./helpers');
 
 	var _ = require('lodash');
@@ -16,11 +16,11 @@ module.exports = function (db, module) {
 
 		const writeData = helpers.serializeData(data);
 		if (isArray) {
-			var bulk = db.collection('objects').initializeUnorderedBulkOp();
+			var bulk = module.client.collection('objects').initializeUnorderedBulkOp();
 			key.forEach(key => bulk.find({ _key: key }).upsert().updateOne({ $set: writeData }));
 			await bulk.execute();
 		} else {
-			await db.collection('objects').updateOne({ _key: key }, { $set: writeData }, { upsert: true, w: 1 });
+			await module.client.collection('objects').updateOne({ _key: key }, { $set: writeData }, { upsert: true, w: 1 });
 		}
 
 		cache.delObjectCache(key);
@@ -58,7 +58,7 @@ module.exports = function (db, module) {
 			return cachedData[key].hasOwnProperty(field) ? cachedData[key][field] : null;
 		}
 		field = helpers.fieldToString(field);
-		const item = await db.collection('objects').findOne({ _key: key }, { projection: { _id: 0, [field]: 1 } });
+		const item = await module.client.collection('objects').findOne({ _key: key }, { projection: { _id: 0, [field]: 1 } });
 		if (!item) {
 			return null;
 		}
@@ -104,7 +104,7 @@ module.exports = function (db, module) {
 		if (unCachedKeys.length === 1) {
 			query._key = unCachedKeys[0];
 		}
-		let data = await db.collection('objects').find(query, { projection: { _id: 0 } }).toArray();
+		let data = await module.client.collection('objects').find(query, { projection: { _id: 0 } }).toArray();
 
 		data = data.map(helpers.deserializeData);
 		var map = helpers.toMap(data);
@@ -142,7 +142,7 @@ module.exports = function (db, module) {
 			data[field] = 1;
 		});
 
-		const item = await db.collection('objects').findOne({ _key: key }, { projection: data });
+		const item = await module.client.collection('objects').findOne({ _key: key }, { projection: data });
 		const results = fields.map(f => !!item && item[f] !== undefined && item[f] !== null);
 		return results;
 	};
@@ -166,7 +166,7 @@ module.exports = function (db, module) {
 			data[field] = '';
 		});
 
-		await db.collection('objects').updateOne({ _key: key }, { $unset: data });
+		await module.client.collection('objects').updateOne({ _key: key }, { $unset: data });
 		cache.delObjectCache(key);
 	};
 
@@ -189,7 +189,7 @@ module.exports = function (db, module) {
 		increment[field] = value;
 
 		if (Array.isArray(key)) {
-			var bulk = db.collection('objects').initializeUnorderedBulkOp();
+			var bulk = module.client.collection('objects').initializeUnorderedBulkOp();
 			key.forEach(function (key) {
 				bulk.find({ _key: key }).upsert().update({ $inc: increment });
 			});
@@ -199,7 +199,7 @@ module.exports = function (db, module) {
 			return result.map(data => data && data[field]);
 		}
 
-		const result = await db.collection('objects').findOneAndUpdate({ _key: key }, { $inc: increment }, { returnOriginal: false, upsert: true });
+		const result = await module.client.collection('objects').findOneAndUpdate({ _key: key }, { $inc: increment }, { returnOriginal: false, upsert: true });
 		cache.delObjectCache(key);
 		return result && result.value ? result.value[field] : null;
 	};

src/database/mongo/list.js

@@ -1,6 +1,6 @@
 'use strict';
 
-module.exports = function (db, module) {
+module.exports = function (module) {
 	var helpers = require('./helpers');
 
 	module.listPrepend = async function (key, value) {
@@ -12,7 +12,7 @@ module.exports = function (db, module) {
 
 		const exists = await module.isObjectField(key, 'array');
 		if (exists) {
-			await db.collection('objects').updateOne({ _key: key }, { $push: { array: { $each: [value], $position: 0 } } }, { upsert: true, w: 1 });
+			await module.client.collection('objects').updateOne({ _key: key }, { $push: { array: { $each: [value], $position: 0 } } }, { upsert: true, w: 1 });
 		} else {
 			await module.listAppend(key, value);
 		}
@@ -23,7 +23,7 @@ module.exports = function (db, module) {
 			return;
 		}
 		value = helpers.valueToString(value);
-		await db.collection('objects').updateOne({ _key: key }, { $push: { array: value } }, { upsert: true, w: 1 });
+		await module.client.collection('objects').updateOne({ _key: key }, { $push: { array: value } }, { upsert: true, w: 1 });
 	};
 
 	module.listRemoveLast = async function (key) {
@@ -31,7 +31,7 @@ module.exports = function (db, module) {
 			return;
 		}
 		const value = await module.getListRange(key, -1, -1);
-		db.collection('objects').updateOne({ _key: key }, { $pop: { array: 1 } });
+		module.client.collection('objects').updateOne({ _key: key }, { $pop: { array: 1 } });
 		return (value && value.length) ? value[0] : null;
 	};
 
@@ -41,7 +41,7 @@ module.exports = function (db, module) {
 		}
 		value = helpers.valueToString(value);
 
-		await db.collection('objects').updateOne({ _key: key }, { $pull: { array: value } });
+		await module.client.collection('objects').updateOne({ _key: key }, { $pull: { array: value } });
 	};
 
 	module.listTrim = async function (key, start, stop) {
@@ -49,7 +49,7 @@ module.exports = function (db, module) {
 			return;
 		}
 		const value = await module.getListRange(key, start, stop);
-		await db.collection('objects').updateOne({ _key: key }, { $set: { array: value } });
+		await module.client.collection('objects').updateOne({ _key: key }, { $set: { array: value } });
 	};
 
 	module.getListRange = async function (key, start, stop) {
@@ -57,7 +57,7 @@ module.exports = function (db, module) {
 			return;
 		}
 
-		const data = await db.collection('objects').findOne({ _key: key }, { array: 1 });
+		const data = await module.client.collection('objects').findOne({ _key: key }, { array: 1 });
 		if (!(data && data.array)) {
 			return [];
 		}
@@ -66,7 +66,7 @@ module.exports = function (db, module) {
 	};
 
 	module.listLength = async function (key) {
-		const result = await db.collection('objects').aggregate([
+		const result = await module.client.collection('objects').aggregate([
 			{ $match: { _key: key } },
 			{ $project: { count: { $size: '$array' } } },
 		]).toArray();

src/database/mongo/main.js

@@ -1,12 +1,12 @@
 'use strict';
 
-module.exports = function (db, module) {
+module.exports = function (module) {
 	module.flushdb = async function () {
-		await db.dropDatabase();
+		await module.client.dropDatabase();
 	};
 
 	module.emptydb = async function () {
-		await db.collection('objects').deleteMany({});
+		await module.client.collection('objects').deleteMany({});
 		module.objectCache.resetObjectCache();
 	};
 
@@ -15,7 +15,7 @@ module.exports = function (db, module) {
 			return;
 		}
 		if (Array.isArray(key)) {
-			const data = await db.collection('objects').find({ _key: { $in: key } }).toArray();
+			const data = await module.client.collection('objects').find({ _key: { $in: key } }).toArray();
 			var map = {};
 			data.forEach(function (item) {
 				map[item._key] = true;
@@ -23,7 +23,7 @@ module.exports = function (db, module) {
 
 			return key.map(key => !!map[key]);
 		}
-		const item = await db.collection('objects').findOne({ _key: key });
+		const item = await module.client.collection('objects').findOne({ _key: key });
 		return item !== undefined && item !== null;
 	};
 
@@ -31,7 +31,7 @@ module.exports = function (db, module) {
 		if (!key) {
 			return;
 		}
-		await db.collection('objects').deleteMany({ _key: key });
+		await module.client.collection('objects').deleteMany({ _key: key });
 		module.objectCache.delObjectCache(key);
 	};
 
@@ -39,7 +39,7 @@ module.exports = function (db, module) {
 		if (!Array.isArray(keys) || !keys.length) {
 			return;
 		}
-		await db.collection('objects').deleteMany({ _key: { $in: keys } });
+		await module.client.collection('objects').deleteMany({ _key: { $in: keys } });
 		module.objectCache.delObjectCache(keys);
 	};
 
@@ -48,7 +48,7 @@ module.exports = function (db, module) {
 			return;
 		}
 
-		const objectData = await db.collection('objects').findOne({ _key: key }, { projection: { _id: 0 } });
+		const objectData = await module.client.collection('objects').findOne({ _key: key }, { projection: { _id: 0 } });
 
 		// fallback to old field name 'value' for backwards compatibility #6340
 		var value = null;
@@ -74,17 +74,17 @@ module.exports = function (db, module) {
 		if (!key) {
 			return;
 		}
-		const result = await db.collection('objects').findOneAndUpdate({ _key: key }, { $inc: { data: 1 } }, { returnOriginal: false, upsert: true });
+		const result = await module.client.collection('objects').findOneAndUpdate({ _key: key }, { $inc: { data: 1 } }, { returnOriginal: false, upsert: true });
 		return result && result.value ? result.value.data : null;
 	};
 
 	module.rename = async function (oldKey, newKey) {
-		await db.collection('objects').updateMany({ _key: oldKey }, { $set: { _key: newKey } });
+		await module.client.collection('objects').updateMany({ _key: oldKey }, { $set: { _key: newKey } });
 		module.objectCache.delObjectCache([oldKey, newKey]);
 	};
 
 	module.type = async function (key) {
-		const data = await db.collection('objects').findOne({ _key: key });
+		const data = await module.client.collection('objects').findOne({ _key: key });
 		if (!data) {
 			return null;
 		}

src/database/mongo/sets.js

@@ -1,6 +1,6 @@
 'use strict';
 
-module.exports = function (db, module) {
+module.exports = function (module) {
 	var helpers = require('./helpers');
 
 	module.setAdd = async function (key, value) {
@@ -10,7 +10,7 @@ module.exports = function (db, module) {
 
 		value = value.map(v => helpers.valueToString(v));
 
-		await db.collection('objects').updateOne({
+		await module.client.collection('objects').updateOne({
 			_key: key,
 		}, {
 			$addToSet: {
@@ -35,7 +35,7 @@ module.exports = function (db, module) {
 
 		value = value.map(v => helpers.valueToString(v));
 
-		var bulk = db.collection('objects').initializeUnorderedBulkOp();
+		var bulk = module.client.collection('objects').initializeUnorderedBulkOp();
 
 		for (var i = 0; i < keys.length; i += 1) {
 			bulk.find({ _key: keys[i] }).upsert().updateOne({ $addToSet: {
@@ -61,7 +61,7 @@ module.exports = function (db, module) {
 
 		value = value.map(v => helpers.valueToString(v));
 
-		await db.collection('objects').updateMany({ _key: Array.isArray(key) ? { $in: key } : key }, { $pullAll: { members: value } });
+		await module.client.collection('objects').updateMany({ _key: Array.isArray(key) ? { $in: key } : key }, { $pullAll: { members: value } });
 	};
 
 	module.setsRemove = async function (keys, value) {
@@ -70,7 +70,7 @@ module.exports = function (db, module) {
 		}
 		value = helpers.valueToString(value);
 
-		await db.collection('objects').updateMany({ _key: { $in: keys } }, { $pull: { members: value } });
+		await module.client.collection('objects').updateMany({ _key: { $in: keys } }, { $pull: { members: value } });
 	};
 
 	module.isSetMember = async function (key, value) {
@@ -79,7 +79,7 @@ module.exports = function (db, module) {
 		}
 		value = helpers.valueToString(value);
 
-		const item = await db.collection('objects').findOne({ _key: key, members: value }, { projection: { _id: 0, members: 0 } });
+		const item = await module.client.collection('objects').findOne({ _key: key, members: value }, { projection: { _id: 0, members: 0 } });
 		return item !== null && item !== undefined;
 	};
 
@@ -89,7 +89,7 @@ module.exports = function (db, module) {
 		}
 		values = values.map(v => helpers.valueToString(v));
 
-		const result = await db.collection('objects').findOne({ _key: key }, { projection: { _id: 0, _key: 0 } });
+		const result = await module.client.collection('objects').findOne({ _key: key }, { projection: { _id: 0, _key: 0 } });
 		const membersSet = new Set(result && Array.isArray(result.members) ? result.members : []);
 		return values.map(v => membersSet.has(v));
 	};
@@ -100,7 +100,7 @@ module.exports = function (db, module) {
 		}
 		value = helpers.valueToString(value);
 
-		const result = await db.collection('objects').find({ _key: { $in: sets }, members: value }, { projection: { _id: 0, members: 0 } }).toArray();
+		const result = await module.client.collection('objects').find({ _key: { $in: sets }, members: value }, { projection: { _id: 0, members: 0 } }).toArray();
 
 		var map = {};
 		result.forEach(function (item) {
@@ -115,7 +115,7 @@ module.exports = function (db, module) {
 			return [];
 		}
 
-		const data = await db.collection('objects').findOne({ _key: key }, { projection: { _id: 0, _key: 0 } });
+		const data = await module.client.collection('objects').findOne({ _key: key }, { projection: { _id: 0, _key: 0 } });
 		return data ? data.members : [];
 	};
 
@@ -123,7 +123,7 @@ module.exports = function (db, module) {
 		if (!Array.isArray(keys) || !keys.length) {
 			return [];
 		}
-		const data = await db.collection('objects').find({ _key: { $in: keys } }, { projection: { _id: 0 } }).toArray();
+		const data = await module.client.collection('objects').find({ _key: { $in: keys } }, { projection: { _id: 0 } }).toArray();
 
 		var sets = {};
 		data.forEach(function (set) {
@@ -137,7 +137,7 @@ module.exports = function (db, module) {
 		if (!key) {
 			return 0;
 		}
-		const data = await db.collection('objects').findOne({ _key: key }, { projection: { _id: 0 } });
+		const data = await module.client.collection('objects').findOne({ _key: key }, { projection: { _id: 0 } });
 		return data ? data.members.length : 0;
 	};
 
@@ -148,7 +148,7 @@ module.exports = function (db, module) {
 	};
 
 	module.setRemoveRandom = async function (key) {
-		const data = await db.collection('objects').findOne({ _key: key });
+		const data = await module.client.collection('objects').findOne({ _key: key });
 		if (!data) {
 			return;
 		}

src/database/mongo/sorted.js

@@ -2,15 +2,15 @@
 
 var utils = require('../../utils');
 
-module.exports = function (db, module) {
+module.exports = function (module) {
 	var helpers = require('./helpers');
 	const util = require('util');
 	const sleep = util.promisify(setTimeout);
 
-	require('./sorted/add')(db, module);
-	require('./sorted/remove')(db, module);
-	require('./sorted/union')(db, module);
-	require('./sorted/intersect')(db, module);
+	require('./sorted/add')(module);
+	require('./sorted/remove')(module);
+	require('./sorted/union')(module);
+	require('./sorted/intersect')(module);
 
 	module.getSortedSetRange = async function (key, start, stop) {
 		return await getSortedSetRange(key, start, stop, '-inf', '+inf', 1, false);
@@ -81,7 +81,7 @@ module.exports = function (db, module) {
 			limit = 0;
 		}
 
-		let data = await db.collection('objects').find(query, { projection: fields })
+		let data = await module.client.collection('objects').find(query, { projection: fields })
 			.sort({ score: sort })
 			.skip(start)
 			.limit(limit)
@@ -135,7 +135,7 @@ module.exports = function (db, module) {
 			query.score.$lte = max;
 		}
 
-		const count = await db.collection('objects').countDocuments(query);
+		const count = await module.client.collection('objects').countDocuments(query);
 		return count || 0;
 	};
 
@@ -143,7 +143,7 @@ module.exports = function (db, module) {
 		if (!key) {
 			return 0;
 		}
-		const count = await db.collection('objects').countDocuments({ _key: key });
+		const count = await module.client.collection('objects').countDocuments({ _key: key });
 		return parseInt(count, 10) || 0;
 	};
 
@@ -160,7 +160,7 @@ module.exports = function (db, module) {
 			return 0;
 		}
 
-		const count = await db.collection('objects').countDocuments({ _key: Array.isArray(keys) ? { $in: keys } : keys });
+		const count = await module.client.collection('objects').countDocuments({ _key: Array.isArray(keys) ? { $in: keys } : keys });
 		return parseInt(count, 10) || 0;
 	};
 
@@ -182,7 +182,7 @@ module.exports = function (db, module) {
 			return null;
 		}
 
-		return await db.collection('objects').countDocuments({
+		return await module.client.collection('objects').countDocuments({
 			$or: [
 				{
 					_key: key,
@@ -243,7 +243,7 @@ module.exports = function (db, module) {
 			return null;
 		}
 		value = helpers.valueToString(value);
-		const result = await db.collection('objects').findOne({ _key: key, value: value }, { projection: { _id: 0, _key: 0, value: 0 } });
+		const result = await module.client.collection('objects').findOne({ _key: key, value: value }, { projection: { _id: 0, _key: 0, value: 0 } });
 		return result ? result.score : null;
 	};
 
@@ -252,7 +252,7 @@ module.exports = function (db, module) {
 			return [];
 		}
 		value = helpers.valueToString(value);
-		const result = await db.collection('objects').find({ _key: { $in: keys }, value: value }, { projection: { _id: 0, value: 0 } }).toArray();
+		const result = await module.client.collection('objects').find({ _key: { $in: keys }, value: value }, { projection: { _id: 0, value: 0 } }).toArray();
 		var map = {};
 		result.forEach(function (item) {
 			if (item) {
@@ -271,7 +271,7 @@ module.exports = function (db, module) {
 			return [];
 		}
 		values = values.map(helpers.valueToString);
-		const result = await db.collection('objects').find({ _key: key, value: { $in: values } }, { projection: { _id: 0, _key: 0 } }).toArray();
+		const result = await module.client.collection('objects').find({ _key: key, value: { $in: values } }, { projection: { _id: 0, _key: 0 } }).toArray();
 
 		var valueToScore = {};
 		result.forEach(function (item) {
@@ -288,7 +288,7 @@ module.exports = function (db, module) {
 			return;
 		}
 		value = helpers.valueToString(value);
-		const result = await db.collection('objects').findOne({ _key: key, value: value }, { projection: { _id: 0, _key: 0, score: 0 } });
+		const result = await module.client.collection('objects').findOne({ _key: key, value: value }, { projection: { _id: 0, _key: 0, score: 0 } });
 		return !!result;
 	};
 
@@ -297,7 +297,7 @@ module.exports = function (db, module) {
 			return;
 		}
 		values = values.map(helpers.valueToString);
-		const results = await db.collection('objects').find({ _key: key, value: { $in: values } }, { projection: { _id: 0, _key: 0, score: 0 } }).toArray();
+		const results = await module.client.collection('objects').find({ _key: key, value: { $in: values } }, { projection: { _id: 0, _key: 0, score: 0 } }).toArray();
 
 		var isMember = {};
 		results.forEach(function (item) {
@@ -314,7 +314,7 @@ module.exports = function (db, module) {
 			return [];
 		}
 		value = helpers.valueToString(value);
-		const results = await db.collection('objects').find({ _key: { $in: keys }, value: value }, { projection: { _id: 0, score: 0 } }).toArray();
+		const results = await module.client.collection('objects').find({ _key: { $in: keys }, value: value }, { projection: { _id: 0, score: 0 } }).toArray();
 
 		var isMember = {};
 		results.forEach(function (item) {
@@ -331,7 +331,7 @@ module.exports = function (db, module) {
 			return [];
 		}
 
-		const data = await db.collection('objects').find({
+		const data = await module.client.collection('objects').find({
 			_key: keys.length === 1 ? keys[0] : { $in: keys },
 		}, { projection: { _id: 0, score: 0 } }).sort({ score: 1 }).toArray();
 
@@ -353,7 +353,7 @@ module.exports = function (db, module) {
 		data.score = parseFloat(increment);
 
 		try {
-			const result = await db.collection('objects').findOneAndUpdate({ _key: key, value: value }, { $inc: data }, { returnOriginal: false, upsert: true });
+			const result = await module.client.collection('objects').findOneAndUpdate({ _key: key, value: value }, { $inc: data }, { returnOriginal: false, upsert: true });
 			return result && result.value ? result.value.score : null;
 		} catch (err) {
 			// if there is duplicate key error retry the upsert
@@ -386,7 +386,7 @@ module.exports = function (db, module) {
 		count = count !== undefined ? count : 0;
 		buildLexQuery(query, min, max);
 
-		const data = await db.collection('objects').find(query, { projection: { _id: 0, _key: 0, score: 0 } })
+		const data = await module.client.collection('objects').find(query, { projection: { _id: 0, _key: 0, score: 0 } })
 			.sort({ value: sort })
 			.skip(start)
 			.limit(count === -1 ? 0 : count)
@@ -399,7 +399,7 @@ module.exports = function (db, module) {
 		var query = { _key: key };
 		buildLexQuery(query, min, max);
 
-		await db.collection('objects').deleteMany(query);
+		await module.client.collection('objects').deleteMany(query);
 	};
 
 	function buildLexQuery(query, min, max) {
@@ -432,7 +432,7 @@ module.exports = function (db, module) {
 		if (!options.withScores) {
 			project.score = 0;
 		}
-		var cursor = await db.collection('objects').find({ _key: setKey }, { projection: project })
+		var cursor = await module.client.collection('objects').find({ _key: setKey }, { projection: project })
 			.sort({ score: 1 })
 			.batchSize(options.batch);
 

src/database/mongo/sorted/add.js

@@ -1,6 +1,6 @@
 'use strict';
 
-module.exports = function (db, module) {
+module.exports = function (module) {
 	var helpers = require('../helpers');
 	var utils = require('../../../utils');
 
@@ -17,7 +17,7 @@ module.exports = function (db, module) {
 		value = helpers.valueToString(value);
 
 		try {
-			await db.collection('objects').updateOne({ _key: key, value: value }, { $set: { score: parseFloat(score) } }, { upsert: true, w: 1 });
+			await module.client.collection('objects').updateOne({ _key: key, value: value }, { $set: { score: parseFloat(score) } }, { upsert: true, w: 1 });
 		} catch (err) {
 			if (err && err.message.startsWith('E11000 duplicate key error')) {
 				return await module.sortedSetAdd(key, score, value);
@@ -40,7 +40,7 @@ module.exports = function (db, module) {
 		}
 		values = values.map(helpers.valueToString);
 
-		var bulk = db.collection('objects').initializeUnorderedBulkOp();
+		var bulk = module.client.collection('objects').initializeUnorderedBulkOp();
 		for (var i = 0; i < scores.length; i += 1) {
 			bulk.find({ _key: key, value: values[i] }).upsert().updateOne({ $set: { score: parseFloat(scores[i]) } });
 		}
@@ -62,7 +62,7 @@ module.exports = function (db, module) {
 
 		value = helpers.valueToString(value);
 
-		var bulk = db.collection('objects').initializeUnorderedBulkOp();
+		var bulk = module.client.collection('objects').initializeUnorderedBulkOp();
 		for (var i = 0; i < keys.length; i += 1) {
 			bulk.find({ _key: keys[i], value: value }).upsert().updateOne({ $set: { score: parseFloat(isArrayOfScores ? scores[i] : scores) } });
 		}
@@ -73,7 +73,7 @@ module.exports = function (db, module) {
 		if (!Array.isArray(data) || !data.length) {
 			return;
 		}
-		var bulk = db.collection('objects').initializeUnorderedBulkOp();
+		var bulk = module.client.collection('objects').initializeUnorderedBulkOp();
 		data.forEach(function (item) {
 			bulk.find({ _key: item[0], value: String(item[2]) }).upsert().updateOne({ $set: { score: parseFloat(item[1]) } });
 		});

src/database/mongo/sorted/intersect.js

@@ -1,6 +1,6 @@
 'use strict';
 
-module.exports = function (db, module) {
+module.exports = function (module) {
 	module.sortedSetIntersectCard = async function (keys) {
 		if (!Array.isArray(keys) || !keys.length) {
 			return 0;
@@ -13,7 +13,7 @@ module.exports = function (db, module) {
 			{ $group: { _id: null, count: { $sum: 1 } } },
 		];
 
-		const data = await db.collection('objects').aggregate(pipeline).toArray();
+		const data = await module.client.collection('objects').aggregate(pipeline).toArray();
 		return Array.isArray(data) && data.length ? data[0].count : 0;
 	};
 
@@ -87,7 +87,7 @@ module.exports = function (db, module) {
 		}
 		pipeline.push({ $project: project });
 
-		let data = await db.collection('objects').aggregate(pipeline).toArray();
+		let data = await module.client.collection('objects').aggregate(pipeline).toArray();
 
 		if (!params.withScores) {
 			data = data.map(item => item.value);

src/database/mongo/sorted/remove.js

@@ -1,6 +1,6 @@
 'use strict';
 
-module.exports = function (db, module) {
+module.exports = function (module) {
 	var helpers = require('../helpers');
 
 	module.sortedSetRemove = async function (key, value) {
@@ -18,7 +18,7 @@ module.exports = function (db, module) {
 			value = helpers.valueToString(value);
 		}
 
-		await db.collection('objects').deleteMany({
+		await module.client.collection('objects').deleteMany({
 			_key: Array.isArray(key) ? { $in: key } : key,
 			value: isValueArray ? { $in: value } : value,
 		});
@@ -30,7 +30,7 @@ module.exports = function (db, module) {
 		}
 		value = helpers.valueToString(value);
 
-		await db.collection('objects').deleteMany({ _key: { $in: keys }, value: value });
+		await module.client.collection('objects').deleteMany({ _key: { $in: keys }, value: value });
 	};
 
 	module.sortedSetsRemoveRangeByScore = async function (keys, min, max) {
@@ -49,14 +49,14 @@ module.exports = function (db, module) {
 			query.score.$lte = parseFloat(max);
 		}
 
-		await db.collection('objects').deleteMany(query);
+		await module.client.collection('objects').deleteMany(query);
 	};
 
 	module.sortedSetRemoveBulk = async function (data) {
 		if (!Array.isArray(data) || !data.length) {
 			return;
 		}
-		var bulk = db.collection('objects').initializeUnorderedBulkOp();
+		var bulk = module.client.collection('objects').initializeUnorderedBulkOp();
 		data.forEach(item => bulk.find({ _key: item[0], value: String(item[1]) }).remove());
 		await bulk.execute();
 	};

src/database/mongo/sorted/union.js

@@ -1,12 +1,12 @@
 'use strict';
 
-module.exports = function (db, module) {
+module.exports = function (module) {
 	module.sortedSetUnionCard = async function (keys) {
 		if (!Array.isArray(keys) || !keys.length) {
 			return 0;
 		}
 
-		const data = await db.collection('objects').aggregate([
+		const data = await module.client.collection('objects').aggregate([
 			{ $match: { _key: { $in: keys } } },
 			{ $group: { _id: { value: '$value' } } },
 			{ $group: { _id: null, count: { $sum: 1 } } },
@@ -61,7 +61,7 @@ module.exports = function (db, module) {
 		}
 		pipeline.push({	$project: project });
 
-		let data = await db.collection('objects').aggregate(pipeline).toArray();
+		let data = await module.client.collection('objects').aggregate(pipeline).toArray();
 		if (!params.withScores) {
 			data = data.map(item => item.value);
 		}

src/database/mongo/transaction.js

@@ -1,8 +1,8 @@
 'use strict';
 
-module.exports = function (db, module) {
+module.exports = function (module) {
 	// TODO
 	module.transaction = function (perform, callback) {
-		perform(db, callback);
+		perform(module.client, callback);
 	};
 };

src/database/postgres.js

@@ -81,37 +81,11 @@ postgresModule.init = function (callback) {
 		}
 
 		postgresModule.pool = db;
-		Object.defineProperty(postgresModule, 'client', {
-			get: function () {
-				return db;
-			},
-			configurable: true,
-		});
-
-		var wrappedDB = {
-			connect: function () {
-				return postgresModule.pool.connect.apply(postgresModule.pool, arguments);
-			},
-			query: function () {
-				return postgresModule.client.query.apply(postgresModule.client, arguments);
-			},
-		};
+		postgresModule.client = db;
 
 		checkUpgrade(client, function (err) {
 			release();
-			if (err) {
-				return callback(err);
-			}
-
-			require('./postgres/main')(wrappedDB, postgresModule);
-			require('./postgres/hash')(wrappedDB, postgresModule);
-			require('./postgres/sets')(wrappedDB, postgresModule);
-			require('./postgres/sorted')(wrappedDB, postgresModule);
-			require('./postgres/list')(wrappedDB, postgresModule);
-			require('./postgres/transaction')(db, postgresModule);
-
-			postgresModule.async = require('../promisify')(postgresModule, ['client', 'sessionStore', 'pool', 'transaction']);
-			callback();
+			callback(err);
 		});
 	});
 };
@@ -455,3 +429,12 @@ postgresModule.socketAdapter = function () {
 		pubClient: postgresModule.pool,
 	});
 };
+
+require('./postgres/main')(postgresModule);
+require('./postgres/hash')(postgresModule);
+require('./postgres/sets')(postgresModule);
+require('./postgres/sorted')(postgresModule);
+require('./postgres/list')(postgresModule);
+require('./postgres/transaction')(postgresModule);
+
+postgresModule.async = require('../promisify')(postgresModule, ['client', 'sessionStore', 'pool', 'transaction']);

src/database/postgres/hash.js

@@ -1,6 +1,6 @@
 'use strict';
 
-module.exports = function (db, module) {
+module.exports = function (module) {
 	var helpers = require('./helpers');
 
 	module.setObject = async function (key, data) {
@@ -13,11 +13,10 @@ module.exports = function (db, module) {
 		}
 
 		await module.transaction(async function (client) {
-			var query = client.query.bind(client);
 			const dataString = JSON.stringify(data);
 			async function setOne(key) {
 				await helpers.ensureLegacyObjectType(client, key, 'hash');
-				await query({
+				await client.query({
 					name: 'setObject',
 					text: `
 	INSERT INTO "legacy_hash" ("_key", "data")
@@ -41,11 +40,10 @@ module.exports = function (db, module) {
 		}
 
 		await module.transaction(async function (client) {
-			var query = client.query.bind(client);
 			const valueString = JSON.stringify(value);
 			async function setOne(key) {
 				await helpers.ensureLegacyObjectType(client, key, 'hash');
-				await query({
+				await client.query({
 					name: 'setObjectField',
 					text: `
 	INSERT INTO "legacy_hash" ("_key", "data")
@@ -69,7 +67,7 @@ module.exports = function (db, module) {
 			return null;
 		}
 
-		const res = await db.query({
+		const res = await module.pool.query({
 			name: 'getObject',
 			text: `
 SELECT h."data"
@@ -90,7 +88,7 @@ SELECT h."data"
 			return [];
 		}
 
-		const res = await db.query({
+		const res = await module.pool.query({
 			name: 'getObjects',
 			text: `
 SELECT h."data"
@@ -112,7 +110,7 @@ SELECT h."data"
 			return null;
 		}
 
-		const res = await db.query({
+		const res = await module.pool.query({
 			name: 'getObjectField',
 			text: `
 SELECT h."data"->>$2::TEXT f
@@ -133,7 +131,7 @@ SELECT h."data"->>$2::TEXT f
 			return null;
 		}
 
-		const res = await db.query({
+		const res = await module.pool.query({
 			name: 'getObjectFields',
 			text: `
 SELECT (SELECT jsonb_object_agg(f, d."value")
@@ -165,7 +163,7 @@ SELECT (SELECT jsonb_object_agg(f, d."value")
 			return [];
 		}
 
-		const res = await db.query({
+		const res = await module.pool.query({
 			name: 'getObjectsFields',
 			text: `
 SELECT (SELECT jsonb_object_agg(f, d."value")
@@ -190,7 +188,7 @@ SELECT (SELECT jsonb_object_agg(f, d."value")
 			return;
 		}
 
-		const res = await db.query({
+		const res = await module.pool.query({
 			name: 'getObjectKeys',
 			text: `
 SELECT ARRAY(SELECT jsonb_object_keys(h."data")) k
@@ -216,7 +214,7 @@ SELECT ARRAY(SELECT jsonb_object_keys(h."data")) k
 			return;
 		}
 
-		const res = await db.query({
+		const res = await module.pool.query({
 			name: 'isObjectField',
 			text: `
 SELECT (h."data" ? $2::TEXT AND h."data"->>$2::TEXT IS NOT NULL) b
@@ -253,7 +251,7 @@ SELECT (h."data" ? $2::TEXT AND h."data"->>$2::TEXT IS NOT NULL) b
 			return;
 		}
 
-		await db.query({
+		await module.pool.query({
 			name: 'deleteObjectFields',
 			text: `
 UPDATE "legacy_hash"
@@ -281,14 +279,13 @@ UPDATE "legacy_hash"
 		}
 
 		return await module.transaction(async function (client) {
-			var query = client.query.bind(client);
 			if (Array.isArray(key)) {
 				await helpers.ensureLegacyObjectsType(client, key, 'hash');
 			} else {
 				await helpers.ensureLegacyObjectType(client, key, 'hash');
 			}
 
-			const res = await query(Array.isArray(key) ? {
+			const res = await client.query(Array.isArray(key) ? {
 				name: 'incrObjectFieldByMulti',
 				text: `
 INSERT INTO "legacy_hash" ("_key", "data")

src/database/postgres/list.js

@@ -1,6 +1,6 @@
 'use strict';
 
-module.exports = function (db, module) {
+module.exports = function (module) {
 	var helpers = require('./helpers');
 
 	module.listPrepend = async function (key, value) {
@@ -9,9 +9,8 @@ module.exports = function (db, module) {
 		}
 
 		await module.transaction(async function (client) {
-			var query = client.query.bind(client);
 			await helpers.ensureLegacyObjectType(client, key, 'list');
-			await query({
+			await client.query({
 				name: 'listPrepend',
 				text: `
 INSERT INTO "legacy_list" ("_key", "array")
@@ -29,9 +28,8 @@ DO UPDATE SET "array" = ARRAY[$2::TEXT] || "legacy_list"."array"`,
 		}
 
 		await module.transaction(async function (client) {
-			var query = client.query.bind(client);
 			await helpers.ensureLegacyObjectType(client, key, 'list');
-			await query({
+			await client.query({
 				name: 'listAppend',
 				text: `
 INSERT INTO "legacy_list" ("_key", "array")
@@ -48,7 +46,7 @@ DO UPDATE SET "array" = "legacy_list"."array" || ARRAY[$2::TEXT]`,
 			return;
 		}
 
-		const res = await db.query({
+		const res = await module.pool.query({
 			name: 'listRemoveLast',
 			text: `
 WITH A AS (
@@ -75,7 +73,7 @@ RETURNING A."array"[array_length(A."array", 1)] v`,
 			return;
 		}
 
-		await db.query({
+		await module.pool.query({
 			name: 'listRemoveAll',
 			text: `
 UPDATE "legacy_list" l
@@ -95,7 +93,7 @@ UPDATE "legacy_list" l
 
 		stop += 1;
 
-		await db.query(stop > 0 ? {
+		await module.pool.query(stop > 0 ? {
 			name: 'listTrim',
 			text: `
 UPDATE "legacy_list" l
@@ -133,7 +131,7 @@ UPDATE "legacy_list" l
 
 		stop += 1;
 
-		const res = await db.query(stop > 0 ? {
+		const res = await module.pool.query(stop > 0 ? {
 			name: 'getListRange',
 			text: `
 SELECT ARRAY(SELECT m.m
@@ -167,7 +165,7 @@ SELECT ARRAY(SELECT m.m
 	};
 
 	module.listLength = async function (key) {
-		const res = await db.query({
+		const res = await module.pool.query({
 			name: 'listLength',
 			text: `
 SELECT array_length(l."array", 1) l

src/database/postgres/main.js

@@ -1,17 +1,15 @@
 'use strict';
 
-module.exports = function (db, module) {
-	var helpers = require('./helpers');
-
-	var query = db.query.bind(db);
+module.exports = function (module) {
+	const helpers = require('./helpers');
 
 	module.flushdb = async function () {
-		await query(`DROP SCHEMA "public" CASCADE`);
-		await query(`CREATE SCHEMA "public"`);
+		await module.pool.query(`DROP SCHEMA "public" CASCADE`);
+		await module.pool.query(`CREATE SCHEMA "public"`);
 	};
 
 	module.emptydb = async function () {
-		await query(`DELETE FROM "legacy_object"`);
+		await module.pool.query(`DELETE FROM "legacy_object"`);
 	};
 
 	module.exists = async function (key) {
@@ -20,7 +18,7 @@ module.exports = function (db, module) {
 		}
 
 		if (Array.isArray(key)) {
-			const res = await query({
+			const res = await module.pool.query({
 				name: 'existsArray',
 				text: `
 				SELECT o."_key" k
@@ -32,7 +30,7 @@ module.exports = function (db, module) {
 				return res.rows.some(r => r.k === k);
 			});
 		}
-		const res =	await query({
+		const res =	await module.pool.query({
 			name: 'exists',
 			text: `
 			SELECT EXISTS(SELECT *
@@ -49,7 +47,7 @@ module.exports = function (db, module) {
 			return;
 		}
 
-		await query({
+		await module.pool.query({
 			name: 'delete',
 			text: `
 DELETE FROM "legacy_object"
@@ -63,7 +61,7 @@ DELETE FROM "legacy_object"
 			return;
 		}
 
-		await query({
+		await module.pool.query({
 			name: 'deleteAll',
 			text: `
 DELETE FROM "legacy_object"
@@ -77,7 +75,7 @@ DELETE FROM "legacy_object"
 			return;
 		}
 
-		const res = await query({
+		const res = await module.pool.query({
 			name: 'get',
 			text: `
 SELECT s."data" t
@@ -99,9 +97,8 @@ SELECT s."data" t
 		}
 
 		await module.transaction(async function (client) {
-			var query = client.query.bind(client);
 			await helpers.ensureLegacyObjectType(client, key, 'string');
-			await query({
+			await client.query({
 				name: 'set',
 				text: `
 INSERT INTO "legacy_string" ("_key", "data")
@@ -119,9 +116,8 @@ DO UPDATE SET "data" = $2::TEXT`,
 		}
 
 		return await module.transaction(async function (client) {
-			var query = client.query.bind(client);
 			await helpers.ensureLegacyObjectType(client, key, 'string');
-			const res = await query({
+			const res = await client.query({
 				name: 'increment',
 				text: `
 INSERT INTO "legacy_string" ("_key", "data")
@@ -137,15 +133,14 @@ RETURNING "data" d`,
 
 	module.rename = async function (oldKey, newKey) {
 		await module.transaction(async function (client) {
-			var query = client.query.bind(client);
-			await query({
+			await client.query({
 				name: 'deleteRename',
 				text: `
 	DELETE FROM "legacy_object"
 	 WHERE "_key" = $1::TEXT`,
 				values: [newKey],
 			});
-			await query({
+			await client.query({
 				name: 'rename',
 				text: `
 UPDATE "legacy_object"
@@ -157,7 +152,7 @@ WHERE "_key" = $1::TEXT`,
 	};
 
 	module.type = async function (key) {
-		const res = await query({
+		const res = await module.pool.query({
 			name: 'type',
 			text: `
 SELECT "type"::TEXT t
@@ -171,7 +166,7 @@ SELECT "type"::TEXT t
 	};
 
 	async function doExpire(key, date) {
-		await query({
+		await module.pool.query({
 			name: 'expire',
 			text: `
 UPDATE "legacy_object"

src/database/postgres/sets.js

@@ -2,7 +2,7 @@
 
 var _ = require('lodash');
 
-module.exports = function (db, module) {
+module.exports = function (module) {
 	var helpers = require('./helpers');
 
 	module.setAdd = async function (key, value) {
@@ -11,9 +11,8 @@ module.exports = function (db, module) {
 		}
 
 		await module.transaction(async function (client) {
-			var query = client.query.bind(client);
 			await helpers.ensureLegacyObjectType(client, key, 'set');
-			await query({
+			await client.query({
 				name: 'setAdd',
 				text: `
 INSERT INTO "legacy_set" ("_key", "member")
@@ -38,9 +37,8 @@ DO NOTHING`,
 		keys = _.uniq(keys);
 
 		await module.transaction(async function (client) {
-			var query = client.query.bind(client);
 			await helpers.ensureLegacyObjectsType(client, keys, 'set');
-			await query({
+			await client.query({
 				name: 'setsAdd',
 				text: `
 INSERT INTO "legacy_set" ("_key", "member")
@@ -63,7 +61,7 @@ DO NOTHING`,
 			value = [value];
 		}
 
-		await db.query({
+		await module.pool.query({
 			name: 'setRemove',
 			text: `
 DELETE FROM "legacy_set"
@@ -78,7 +76,7 @@ DELETE FROM "legacy_set"
 			return;
 		}
 
-		await db.query({
+		await module.pool.query({
 			name: 'setsRemove',
 			text: `
 DELETE FROM "legacy_set"
@@ -93,7 +91,7 @@ DELETE FROM "legacy_set"
 			return false;
 		}
 
-		const res = await db.query({
+		const res = await module.pool.query({
 			name: 'isSetMember',
 			text: `
 SELECT 1
@@ -116,7 +114,7 @@ SELECT 1
 
 		values = values.map(helpers.valueToString);
 
-		const res = await db.query({
+		const res = await module.pool.query({
 			name: 'isSetMembers',
 			text: `
 SELECT s."member" m
@@ -141,7 +139,7 @@ SELECT s."member" m
 
 		value = helpers.valueToString(value);
 
-		const res = await db.query({
+		const res = await module.pool.query({
 			name: 'isMemberOfSets',
 			text: `
 SELECT o."_key" k
@@ -164,7 +162,7 @@ SELECT o."_key" k
 			return [];
 		}
 
-		const res = await db.query({
+		const res = await module.pool.query({
 			name: 'getSetMembers',
 			text: `
 SELECT s."member" m
@@ -184,7 +182,7 @@ SELECT s."member" m
 			return [];
 		}
 
-		const res = await db.query({
+		const res = await module.pool.query({
 			name: 'getSetsMembers',
 			text: `
 SELECT o."_key" k,
@@ -208,7 +206,7 @@ SELECT o."_key" k,
 			return 0;
 		}
 
-		const res = await db.query({
+		const res = await module.pool.query({
 			name: 'setCount',
 			text: `
 SELECT COUNT(*) c
@@ -224,7 +222,7 @@ SELECT COUNT(*) c
 	};
 
 	module.setsCount = async function (keys) {
-		const res = await db.query({
+		const res = await module.pool.query({
 			name: 'setsCount',
 			text: `
 SELECT o."_key" k,
@@ -244,7 +242,7 @@ SELECT o."_key" k,
 	};
 
 	module.setRemoveRandom = async function (key) {
-		const res = await db.query({
+		const res = await module.pool.query({
 			name: 'setRemoveRandom',
 			text: `
 WITH A AS (

src/database/postgres/sorted.js

@@ -1,18 +1,16 @@
 'use strict';
 
-module.exports = function (db, module) {
+module.exports = function (module) {
 	var helpers = require('./helpers');
 	const util = require('util');
 	var Cursor = require('pg-cursor');
 	Cursor.prototype.readAsync = util.promisify(Cursor.prototype.read);
 	const sleep = util.promisify(setTimeout);
 
-	var query = db.query.bind(db);
-
-	require('./sorted/add')(db, module);
-	require('./sorted/remove')(db, module);
-	require('./sorted/union')(db, module);
-	require('./sorted/intersect')(db, module);
+	require('./sorted/add')(module);
+	require('./sorted/remove')(module);
+	require('./sorted/union')(module);
+	require('./sorted/intersect')(module);
 
 	module.getSortedSetRange = async function (key, start, stop) {
 		return await getSortedSetRange(key, start, stop, 1, false);
@@ -60,7 +58,7 @@ module.exports = function (db, module) {
 			limit = null;
 		}
 
-		const res = await query({
+		const res = await module.pool.query({
 			name: 'getSortedSetRangeWithScores' + (sort > 0 ? 'Asc' : 'Desc'),
 			text: `
 SELECT z."value",
@@ -125,7 +123,7 @@ OFFSET $2::INTEGER`,
 			max = null;
 		}
 
-		const res = await query({
+		const res = await module.pool.query({
 			name: 'getSortedSetRangeByScoreWithScores' + (sort > 0 ? 'Asc' : 'Desc'),
 			text: `
 SELECT z."value",
@@ -164,7 +162,7 @@ OFFSET $2::INTEGER`,
 			max = null;
 		}
 
-		const res = await query({
+		const res = await module.pool.query({
 			name: 'sortedSetCount',
 			text: `
 SELECT COUNT(*) c
@@ -186,7 +184,7 @@ SELECT COUNT(*) c
 			return 0;
 		}
 
-		const res = await query({
+		const res = await module.pool.query({
 			name: 'sortedSetCard',
 			text: `
 SELECT COUNT(*) c
@@ -206,7 +204,7 @@ SELECT COUNT(*) c
 			return [];
 		}
 
-		const res = await query({
+		const res = await module.pool.query({
 			name: 'sortedSetsCard',
 			text: `
 SELECT o."_key" k,
@@ -249,7 +247,7 @@ SELECT o."_key" k,
 
 	async function getSortedSetRank(sort, keys, values) {
 		values = values.map(helpers.valueToString);
-		const res = await query({
+		const res = await module.pool.query({
 			name: 'getSortedSetRank' + sort,
 			text: `
 SELECT (SELECT r
@@ -310,7 +308,7 @@ SELECT (SELECT r
 
 		value = helpers.valueToString(value);
 
-		const res = await query({
+		const res = await module.pool.query({
 			name: 'sortedSetScore',
 			text: `
 SELECT z."score" s
@@ -335,7 +333,7 @@ SELECT z."score" s
 
 		value = helpers.valueToString(value);
 
-		const res = await query({
+		const res = await module.pool.query({
 			name: 'sortedSetsScore',
 			text: `
 SELECT o."_key" k,
@@ -364,7 +362,7 @@ SELECT o."_key" k,
 		}
 		values = values.map(helpers.valueToString);
 
-		const res = await query({
+		const res = await module.pool.query({
 			name: 'sortedSetScores',
 			text: `
 SELECT z."value" v,
@@ -391,7 +389,7 @@ SELECT z."value" v,
 
 		value = helpers.valueToString(value);
 
-		const res = await query({
+		const res = await module.pool.query({
 			name: 'isSortedSetMember',
 			text: `
 SELECT 1
@@ -414,7 +412,7 @@ SELECT 1
 
 		values = values.map(helpers.valueToString);
 
-		const res = await query({
+		const res = await module.pool.query({
 			name: 'isSortedSetMembers',
 			text: `
 SELECT z."value" v
@@ -439,7 +437,7 @@ SELECT z."value" v
 
 		value = helpers.valueToString(value);
 
-		const res = await query({
+		const res = await module.pool.query({
 			name: 'isMemberOfSortedSets',
 			text: `
 SELECT o."_key" k
@@ -462,7 +460,7 @@ SELECT o."_key" k
 			return [];
 		}
 
-		const res = await query({
+		const res = await module.pool.query({
 			name: 'getSortedSetsMembers',
 			text: `
 SELECT o."_key" k,
@@ -490,9 +488,8 @@ SELECT o."_key" k,
 		increment = parseFloat(increment);
 
 		return await module.transaction(async function (client) {
-			var query = client.query.bind(client);
 			await helpers.ensureLegacyObjectType(client, key, 'zset');
-			const res = await query({
+			const res = await client.query({
 				name: 'sortedSetIncrBy',
 				text: `
 INSERT INTO "legacy_zset" ("_key", "value", "score")
@@ -517,7 +514,7 @@ RETURNING "score" s`,
 	module.sortedSetLexCount = async function (key, min, max) {
 		var q = buildLexQuery(key, min, max);
 
-		const res = await query({
+		const res = await module.pool.query({
 			name: 'sortedSetLexCount' + q.suffix,
 			text: `
 SELECT COUNT(*) c
@@ -539,7 +536,7 @@ SELECT COUNT(*) c
 		var q = buildLexQuery(key, min, max);
 		q.values.push(start);
 		q.values.push(count <= 0 ? null : count);
-		const res = await query({
+		const res = await module.pool.query({
 			name: 'sortedSetLex' + (sort > 0 ? 'Asc' : 'Desc') + q.suffix,
 			text: `
 SELECT z."value" v
@@ -559,7 +556,7 @@ OFFSET $` + (q.values.length - 1) + `::INTEGER`,
 
 	module.sortedSetRemoveRangeByLex = async function (key, min, max) {
 		var q = buildLexQuery(key, min, max);
-		await query({
+		await module.pool.query({
 			name: 'sortedSetRemoveRangeByLex' + q.suffix,
 			text: `
 DELETE FROM "legacy_zset" z
@@ -614,7 +611,7 @@ DELETE FROM "legacy_zset" z
 	}
 
 	module.processSortedSet = async function (setKey, process, options) {
-		const client = await db.connect();
+		const client = await module.pool.connect();
 		var batchSize = (options || {}).batch || 100;
 		var cursor = client.query(new Cursor(`
 SELECT z."value", z."score"
@@ -645,7 +642,7 @@ SELECT z."value", z."score"
 			try {
 				await process(rows);
 			} catch (err) {
-				await query.close();
+				await client.release();
 				throw err;
 			}
 			if (options.interval) {

src/database/postgres/sorted/add.js

@@ -1,6 +1,6 @@
 'use strict';
 
-module.exports = function (db, module) {
+module.exports = function (module) {
 	var helpers = require('../helpers');
 	var utils = require('../../../utils');
 
@@ -19,10 +19,8 @@ module.exports = function (db, module) {
 		score = parseFloat(score);
 
 		await module.transaction(async function (client) {
-			var query = client.query.bind(client);
-
 			await helpers.ensureLegacyObjectType(client, key, 'zset');
-			await query({
+			await client.query({
 				name: 'sortedSetAdd',
 				text: `
 	INSERT INTO "legacy_zset" ("_key", "value", "score")
@@ -52,9 +50,8 @@ module.exports = function (db, module) {
 		helpers.removeDuplicateValues(values, scores);
 
 		await module.transaction(async function (client) {
-			var query = client.query.bind(client);
 			await helpers.ensureLegacyObjectType(client, key, 'zset');
-			await query({
+			await client.query({
 				name: 'sortedSetAddBulk',
 				text: `
 INSERT INTO "legacy_zset" ("_key", "value", "score")
@@ -84,9 +81,8 @@ DO UPDATE SET "score" = EXCLUDED."score"`,
 		scores = isArrayOfScores ? scores.map(score => parseFloat(score)) : parseFloat(scores);
 
 		await module.transaction(async function (client) {
-			var query = client.query.bind(client);
 			await helpers.ensureLegacyObjectsType(client, keys, 'zset');
-			await query({
+			await client.query({
 				name: isArrayOfScores ? 'sortedSetsAddScores' : 'sortedSetsAdd',
 				text: isArrayOfScores ? `
 INSERT INTO "legacy_zset" ("_key", "value", "score")
@@ -117,9 +113,8 @@ INSERT INTO "legacy_zset" ("_key", "value", "score")
 			values.push(item[2]);
 		});
 		await module.transaction(async function (client) {
-			var query = client.query.bind(client);
 			await helpers.ensureLegacyObjectsType(client, keys, 'zset');
-			await query({
+			await client.query({
 				name: 'sortedSetAddBulk2',
 				text: `
 INSERT INTO "legacy_zset" ("_key", "value", "score")

src/database/postgres/sorted/intersect.js

@@ -1,12 +1,12 @@
 'use strict';
 
-module.exports = function (db, module) {
+module.exports = function (module) {
 	module.sortedSetIntersectCard = async function (keys) {
 		if (!Array.isArray(keys) || !keys.length) {
 			return 0;
 		}
 
-		const res = await db.query({
+		const res = await module.pool.query({
 			name: 'sortedSetIntersectCard',
 			text: `
 WITH A AS (SELECT z."value" v,
@@ -55,7 +55,7 @@ SELECT COUNT(*) c
 			limit = null;
 		}
 
-		const res = await db.query({
+		const res = await module.pool.query({
 			name: 'getSortedSetIntersect' + aggregate + (params.sort > 0 ? 'Asc' : 'Desc') + 'WithScores',
 			text: `
 WITH A AS (SELECT z."value",

src/database/postgres/sorted/remove.js

@@ -1,6 +1,6 @@
 'use strict';
 
-module.exports = function (db, module) {
+module.exports = function (module) {
 	var helpers = require('../helpers');
 
 	module.sortedSetRemove = async function (key, value) {
@@ -20,7 +20,7 @@ module.exports = function (db, module) {
 			value = [value];
 		}
 		value = value.map(helpers.valueToString);
-		await db.query({
+		await module.pool.query({
 			name: 'sortedSetRemove',
 			text: `
 DELETE FROM "legacy_zset"
@@ -37,7 +37,7 @@ DELETE FROM "legacy_zset"
 
 		value = helpers.valueToString(value);
 
-		await db.query({
+		await module.pool.query({
 			name: 'sortedSetsRemove',
 			text: `
 DELETE FROM "legacy_zset"
@@ -59,7 +59,7 @@ DELETE FROM "legacy_zset"
 			max = null;
 		}
 
-		await db.query({
+		await module.pool.query({
 			name: 'sortedSetsRemoveRangeByScore',
 			text: `
 DELETE FROM "legacy_zset"

src/database/postgres/sorted/union.js

@@ -1,12 +1,12 @@
 'use strict';
 
-module.exports = function (db, module) {
+module.exports = function (module) {
 	module.sortedSetUnionCard = async function (keys) {
 		if (!Array.isArray(keys) || !keys.length) {
 			return 0;
 		}
 
-		const res = await db.query({
+		const res = await module.pool.query({
 			name: 'sortedSetUnionCard',
 			text: `
 SELECT COUNT(DISTINCT z."value") c
@@ -49,7 +49,7 @@ SELECT COUNT(DISTINCT z."value") c
 			limit = null;
 		}
 
-		const res = await db.query({
+		const res = await module.pool.query({
 			name: 'getSortedSetUnion' + aggregate + (params.sort > 0 ? 'Asc' : 'Desc') + 'WithScores',
 			text: `
 WITH A AS (SELECT z."value",

src/database/postgres/transaction.js

@@ -1,6 +1,6 @@
 'use strict';
 
-module.exports = function (db, module) {
+module.exports = function (module) {
 	module.transaction = async function (perform, txClient) {
 		let res;
 		if (txClient) {
@@ -15,7 +15,7 @@ module.exports = function (db, module) {
 			return res;
 		}
 		// see https://node-postgres.com/features/transactions#a-pooled-client-with-async-await
-		const client = await db.connect();
+		const client = await module.pool.connect();
 
 		try {
 			await client.query('BEGIN');

src/database/redis.js

@@ -7,7 +7,6 @@ var nconf = require('nconf');
 var semver = require('semver');
 var session = require('express-session');
 var redis = require('redis');
-var redisClient;
 
 var redisModule = module.exports;
 
@@ -49,23 +48,14 @@ redisModule.getConnectionOptions = function (redis) {
 
 redisModule.init = function (callback) {
 	callback = callback || function () { };
-	redisClient = redisModule.connect(nconf.get('redis'), function (err) {
+	redisModule.client = redisModule.connect(nconf.get('redis'), function (err) {
 		if (err) {
 			winston.error('NodeBB could not connect to your Redis database. Redis returned the following error', err);
 			return callback(err);
 		}
-		redisModule.client = redisClient;
 
-		require('./redis/promisify')(redisClient);
+		require('./redis/promisify')(redisModule.client);
 
-		require('./redis/main')(redisClient, redisModule);
-		require('./redis/hash')(redisClient, redisModule);
-		require('./redis/sets')(redisClient, redisModule);
-		require('./redis/sorted')(redisClient, redisModule);
-		require('./redis/list')(redisClient, redisModule);
-		require('./redis/transaction')(redisClient, redisModule);
-
-		redisModule.async = require('../promisify')(redisModule, ['client', 'sessionStore', 'connect']);
 		callback();
 	});
 };
@@ -161,7 +151,7 @@ redisModule.checkCompatibilityVersion = function (version, callback) {
 
 redisModule.close = function (callback) {
 	callback = callback || function () {};
-	redisClient.quit(function (err) {
+	redisModule.client.quit(function (err) {
 		callback(err);
 	});
 };
@@ -221,3 +211,12 @@ redisModule.socketAdapter = function () {
 		subClient: sub,
 	});
 };
+
+require('./redis/main')(redisModule);
+require('./redis/hash')(redisModule);
+require('./redis/sets')(redisModule);
+require('./redis/sorted')(redisModule);
+require('./redis/list')(redisModule);
+require('./redis/transaction')(redisModule);
+
+redisModule.async = require('../promisify')(redisModule, ['client', 'sessionStore', 'connect']);

src/database/redis/hash.js

@@ -1,6 +1,6 @@
 'use strict';
 
-module.exports = function (redisClient, module) {
+module.exports = function (module) {
 	var helpers = require('./helpers');
 
 	const _ = require('lodash');
@@ -28,11 +28,11 @@ module.exports = function (redisClient, module) {
 			return;
 		}
 		if (Array.isArray(key)) {
-			const batch = redisClient.batch();
+			const batch = module.client.batch();
 			key.forEach(k => batch.hmset(k, data));
 			await helpers.execBatch(batch);
 		} else {
-			await redisClient.async.hmset(key, data);
+			await module.client.async.hmset(key, data);
 		}
 
 		cache.delObjectCache(key);
@@ -43,11 +43,11 @@ module.exports = function (redisClient, module) {
 			return;
 		}
 		if (Array.isArray(key)) {
-			const batch = redisClient.batch();
+			const batch = module.client.batch();
 			key.forEach(k => batch.hset(k, field, value));
 			await helpers.execBatch(batch);
 		} else {
-			await redisClient.async.hset(key, field, value);
+			await module.client.async.hset(key, field, value);
 		}
 
 		cache.delObjectCache(key);
@@ -75,7 +75,7 @@ module.exports = function (redisClient, module) {
 		if (cachedData[key]) {
 			return cachedData[key].hasOwnProperty(field) ? cachedData[key][field] : null;
 		}
-		return await redisClient.async.hget(key, field);
+		return await module.client.async.hget(key, field);
 	};
 
 	module.getObjectFields = async function (key, fields) {
@@ -98,11 +98,11 @@ module.exports = function (redisClient, module) {
 
 		let data = [];
 		if (unCachedKeys.length > 1) {
-			const batch = redisClient.batch();
+			const batch = module.client.batch();
 			unCachedKeys.forEach(k => batch.hgetall(k));
 			data = await helpers.execBatch(batch);
 		} else if (unCachedKeys.length === 1) {
-			data = [await redisClient.async.hgetall(unCachedKeys[0])];
+			data = [await module.client.async.hgetall(unCachedKeys[0])];
 		}
 
 		unCachedKeys.forEach(function (key, i) {
@@ -126,20 +126,20 @@ module.exports = function (redisClient, module) {
 	};
 
 	module.getObjectKeys = async function (key) {
-		return await redisClient.async.hkeys(key);
+		return await module.client.async.hkeys(key);
 	};
 
 	module.getObjectValues = async function (key) {
-		return await redisClient.async.hvals(key);
+		return await module.client.async.hvals(key);
 	};
 
 	module.isObjectField = async function (key, field) {
-		const exists = await redisClient.async.hexists(key, field);
+		const exists = await module.client.async.hexists(key, field);
 		return exists === 1;
 	};
 
 	module.isObjectFields = async function (key, fields) {
-		const batch = redisClient.batch();
+		const batch = module.client.batch();
 		fields.forEach(f => batch.hexists(String(key), String(f)));
 		const results = await helpers.execBatch(batch);
 		return Array.isArray(results) ? helpers.resultsToBool(results) : null;
@@ -149,12 +149,12 @@ module.exports = function (redisClient, module) {
 		if (key === undefined || key === null || field === undefined || field === null) {
 			return;
 		}
-		await redisClient.async.hdel(key, field);
+		await module.client.async.hdel(key, field);
 		cache.delObjectCache(key);
 	};
 
 	module.deleteObjectFields = async function (key, fields) {
-		await redisClient.async.hdel(key, fields);
+		await module.client.async.hdel(key, fields);
 		cache.delObjectCache(key);
 	};
 
@@ -173,11 +173,11 @@ module.exports = function (redisClient, module) {
 		}
 		let result;
 		if (Array.isArray(key)) {
-			var batch = redisClient.batch();
+			var batch = module.client.batch();
 			key.forEach(k => batch.hincrby(k, field, value));
 			result = await helpers.execBatch(batch);
 		} else {
-			result = await redisClient.async.hincrby(key, field, value);
+			result = await module.client.async.hincrby(key, field, value);
 		}
 		cache.delObjectCache(key);
 		return Array.isArray(result) ? result.map(value => parseInt(value, 10)) : parseInt(result, 10);

src/database/redis/list.js

@@ -1,49 +1,49 @@
 'use strict';
 
-module.exports = function (redisClient, module) {
+module.exports = function (module) {
 	module.listPrepend = async function (key, value) {
 		if (!key) {
 			return;
 		}
-		await redisClient.async.lpush(key, value);
+		await module.client.async.lpush(key, value);
 	};
 
 	module.listAppend = async function (key, value) {
 		if (!key) {
 			return;
 		}
-		await redisClient.async.rpush(key, value);
+		await module.client.async.rpush(key, value);
 	};
 
 	module.listRemoveLast = async function (key) {
 		if (!key) {
 			return;
 		}
-		return await redisClient.async.rpop(key);
+		return await module.client.async.rpop(key);
 	};
 
 	module.listRemoveAll = async function (key, value) {
 		if (!key) {
 			return;
 		}
-		await redisClient.async.lrem(key, 0, value);
+		await module.client.async.lrem(key, 0, value);
 	};
 
 	module.listTrim = async function (key, start, stop) {
 		if (!key) {
 			return;
 		}
-		await redisClient.async.ltrim(key, start, stop);
+		await module.client.async.ltrim(key, start, stop);
 	};
 
 	module.getListRange = async function (key, start, stop) {
 		if (!key) {
 			return;
 		}
-		return await redisClient.async.lrange(key, start, stop);
+		return await module.client.async.lrange(key, start, stop);
 	};
 
 	module.listLength = async function (key) {
-		return await redisClient.async.llen(key);
+		return await module.client.async.llen(key);
 	};
 };

src/database/redis/main.js

@@ -1,10 +1,10 @@
 'use strict';
 
-module.exports = function (redisClient, module) {
+module.exports = function (module) {
 	var helpers = require('./helpers');
 
 	module.flushdb = async function () {
-		await redisClient.async.send_command('flushdb', []);
+		await module.client.async.send_command('flushdb', []);
 	};
 
 	module.emptydb = async function () {
@@ -14,17 +14,17 @@ module.exports = function (redisClient, module) {
 
 	module.exists = async function (key) {
 		if (Array.isArray(key)) {
-			const batch = redisClient.batch();
+			const batch = module.client.batch();
 			key.forEach(key => batch.exists(key));
 			const data = await helpers.execBatch(batch);
 			return data.map(exists => exists === 1);
 		}
-		const exists = await redisClient.async.exists(key);
+		const exists = await module.client.async.exists(key);
 		return exists === 1;
 	};
 
 	module.delete = async function (key) {
-		await redisClient.async.del(key);
+		await module.client.async.del(key);
 		module.objectCache.delObjectCache(key);
 	};
 
@@ -32,25 +32,25 @@ module.exports = function (redisClient, module) {
 		if (!Array.isArray(keys) || !keys.length) {
 			return;
 		}
-		await redisClient.async.del(keys);
+		await module.client.async.del(keys);
 		module.objectCache.delObjectCache(keys);
 	};
 
 	module.get = async function (key) {
-		return await redisClient.async.get(key);
+		return await module.client.async.get(key);
 	};
 
 	module.set = async function (key, value) {
-		await redisClient.async.set(key, value);
+		await module.client.async.set(key, value);
 	};
 
 	module.increment = async function (key) {
-		return await redisClient.async.incr(key);
+		return await module.client.async.incr(key);
 	};
 
 	module.rename = async function (oldKey, newKey) {
 		try {
-			await redisClient.async.rename(oldKey, newKey);
+			await module.client.async.rename(oldKey, newKey);
 		} catch (err) {
 			if (err && err.message !== 'ERR no such key') {
 				throw err;
@@ -61,23 +61,23 @@ module.exports = function (redisClient, module) {
 	};
 
 	module.type = async function (key) {
-		const type = await redisClient.async.type(key);
+		const type = await module.client.async.type(key);
 		return type !== 'none' ? type : null;
 	};
 
 	module.expire = async function (key, seconds) {
-		await redisClient.async.expire(key, seconds);
+		await module.client.async.expire(key, seconds);
 	};
 
 	module.expireAt = async function (key, timestamp) {
-		await redisClient.async.expireat(key, timestamp);
+		await module.client.async.expireat(key, timestamp);
 	};
 
 	module.pexpire = async function (key, ms) {
-		await redisClient.async.pexpire(key, ms);
+		await module.client.async.pexpire(key, ms);
 	};
 
 	module.pexpireAt = async function (key, timestamp) {
-		await redisClient.async.pexpireat(key, timestamp);
+		await module.client.async.pexpireat(key, timestamp);
 	};
 };

src/database/redis/sets.js

@@ -1,6 +1,6 @@
 'use strict';
 
-module.exports = function (redisClient, module) {
+module.exports = function (module) {
 	var helpers = require('./helpers');
 
 	module.setAdd = async function (key, value) {
@@ -10,14 +10,14 @@ module.exports = function (redisClient, module) {
 		if (!value.length) {
 			return;
 		}
-		await redisClient.async.sadd(key, value);
+		await module.client.async.sadd(key, value);
 	};
 
 	module.setsAdd = async function (keys, value) {
 		if (!Array.isArray(keys) || !keys.length) {
 			return;
 		}
-		const batch = redisClient.batch();
+		const batch = module.client.batch();
 		keys.forEach(k => batch.sadd(String(k), String(value)));
 		await helpers.execBatch(batch);
 	};
@@ -30,58 +30,58 @@ module.exports = function (redisClient, module) {
 			key = [key];
 		}
 
-		var batch = redisClient.batch();
+		var batch = module.client.batch();
 		key.forEach(k => batch.srem(String(k), value));
 		await helpers.execBatch(batch);
 	};
 
 	module.setsRemove = async function (keys, value) {
-		var batch = redisClient.batch();
+		var batch = module.client.batch();
 		keys.forEach(k => batch.srem(String(k), value));
 		await helpers.execBatch(batch);
 	};
 
 	module.isSetMember = async function (key, value) {
-		const result = await redisClient.async.sismember(key, value);
+		const result = await module.client.async.sismember(key, value);
 		return result === 1;
 	};
 
 	module.isSetMembers = async function (key, values) {
-		const batch = redisClient.batch();
+		const batch = module.client.batch();
 		values.forEach(v => batch.sismember(String(key), String(v)));
 		const results = await helpers.execBatch(batch);
 		return results ? helpers.resultsToBool(results) : null;
 	};
 
 	module.isMemberOfSets = async function (sets, value) {
-		const batch = redisClient.batch();
+		const batch = module.client.batch();
 		sets.forEach(s => batch.sismember(String(s), String(value)));
 		const results = await helpers.execBatch(batch);
 		return results ? helpers.resultsToBool(results) : null;
 	};
 
 	module.getSetMembers = async function (key) {
-		return await redisClient.async.smembers(key);
+		return await module.client.async.smembers(key);
 	};
 
 	module.getSetsMembers = async function (keys) {
-		const batch = redisClient.batch();
+		const batch = module.client.batch();
 		keys.forEach(k => batch.smembers(String(k)));
 		return await helpers.execBatch(batch);
 	};
 
 	module.setCount = async function (key) {
-		return await redisClient.async.scard(key);
+		return await module.client.async.scard(key);
 	};
 
 	module.setsCount = async function (keys) {
-		const batch = redisClient.batch();
+		const batch = module.client.batch();
 		keys.forEach(k => batch.scard(String(k)));
 		return await helpers.execBatch(batch);
 	};
 
 	module.setRemoveRandom = async function (key) {
-		return await redisClient.async.spop(key);
+		return await module.client.async.spop(key);
 	};
 
 	return module;

src/database/redis/sorted.js

@@ -1,14 +1,14 @@
 'use strict';
 
-module.exports = function (redisClient, module) {
+module.exports = function (module) {
 	var _ = require('lodash');
 	var utils = require('../../utils');
 	var helpers = require('./helpers');
 
-	require('./sorted/add')(redisClient, module);
-	require('./sorted/remove')(redisClient, module);
-	require('./sorted/union')(redisClient, module);
-	require('./sorted/intersect')(redisClient, module);
+	require('./sorted/add')(module);
+	require('./sorted/remove')(module);
+	require('./sorted/union')(module);
+	require('./sorted/intersect')(module);
 
 	module.getSortedSetRange = async function (key, start, stop) {
 		return await sortedSetRange('zrange', key, start, stop, false);
@@ -31,7 +31,7 @@ module.exports = function (redisClient, module) {
 			if (!key.length) {
 				return [];
 			}
-			const batch = redisClient.batch();
+			const batch = module.client.batch();
 			key.forEach((key) => {
 				batch[method]([key, start, stop, 'WITHSCORES']);
 			});
@@ -59,7 +59,7 @@ module.exports = function (redisClient, module) {
 			params.push('WITHSCORES');
 		}
 
-		const data = await redisClient.async[method](params);
+		const data = await module.client.async[method](params);
 		if (!withScores) {
 			return data;
 		}
@@ -71,11 +71,11 @@ module.exports = function (redisClient, module) {
 	}
 
 	module.getSortedSetRangeByScore = async function (key, start, count, min, max) {
-		return await redisClient.async.zrangebyscore([key, min, max, 'LIMIT', start, count]);
+		return await module.client.async.zrangebyscore([key, min, max, 'LIMIT', start, count]);
 	};
 
 	module.getSortedSetRevRangeByScore = async function (key, start, count, max, min) {
-		return await redisClient.async.zrevrangebyscore([key, max, min, 'LIMIT', start, count]);
+		return await module.client.async.zrevrangebyscore([key, max, min, 'LIMIT', start, count]);
 	};
 
 	module.getSortedSetRangeByScoreWithScores = async function (key, start, count, min, max) {
@@ -87,7 +87,7 @@ module.exports = function (redisClient, module) {
 	};
 
 	async function sortedSetRangeByScoreWithScores(method, key, start, count, min, max) {
-		const data = await redisClient.async[method]([key, min, max, 'WITHSCORES', 'LIMIT', start, count]);
+		const data = await module.client.async[method]([key, min, max, 'WITHSCORES', 'LIMIT', start, count]);
 		const objects = [];
 		for (var i = 0; i < data.length; i += 2) {
 			objects.push({ value: data[i], score: parseFloat(data[i + 1]) });
@@ -96,18 +96,18 @@ module.exports = function (redisClient, module) {
 	}
 
 	module.sortedSetCount = async function (key, min, max) {
-		return await redisClient.async.zcount(key, min, max);
+		return await module.client.async.zcount(key, min, max);
 	};
 
 	module.sortedSetCard = async function (key) {
-		return await redisClient.async.zcard(key);
+		return await module.client.async.zcard(key);
 	};
 
 	module.sortedSetsCard = async function (keys) {
 		if (!Array.isArray(keys) || !keys.length) {
 			return [];
 		}
-		var batch = redisClient.batch();
+		var batch = module.client.batch();
 		keys.forEach(k => batch.zcard(String(k)));
 		return await helpers.execBatch(batch);
 	};
@@ -125,15 +125,15 @@ module.exports = function (redisClient, module) {
 	};
 
 	module.sortedSetRank = async function (key, value) {
-		return await redisClient.async.zrank(key, value);
+		return await module.client.async.zrank(key, value);
 	};
 
 	module.sortedSetRevRank = async function (key, value) {
-		return await redisClient.async.zrevrank(key, value);
+		return await module.client.async.zrevrank(key, value);
 	};
 
 	module.sortedSetsRanks = async function (keys, values) {
-		const batch = redisClient.batch();
+		const batch = module.client.batch();
 		for (var i = 0; i < values.length; i += 1) {
 			batch.zrank(keys[i], String(values[i]));
 		}
@@ -141,7 +141,7 @@ module.exports = function (redisClient, module) {
 	};
 
 	module.sortedSetsRevRanks = async function (keys, values) {
-		const batch = redisClient.batch();
+		const batch = module.client.batch();
 		for (var i = 0; i < values.length; i += 1) {
 			batch.zrevrank(keys[i], String(values[i]));
 		}
@@ -149,7 +149,7 @@ module.exports = function (redisClient, module) {
 	};
 
 	module.sortedSetRanks = async function (key, values) {
-		const batch = redisClient.batch();
+		const batch = module.client.batch();
 		for (var i = 0; i < values.length; i += 1) {
 			batch.zrank(key, String(values[i]));
 		}
@@ -157,7 +157,7 @@ module.exports = function (redisClient, module) {
 	};
 
 	module.sortedSetRevRanks = async function (key, values) {
-		const batch = redisClient.batch();
+		const batch = module.client.batch();
 		for (var i = 0; i < values.length; i += 1) {
 			batch.zrevrank(key, String(values[i]));
 		}
@@ -169,7 +169,7 @@ module.exports = function (redisClient, module) {
 			return null;
 		}
 
-		const score = await redisClient.async.zscore(key, value);
+		const score = await module.client.async.zscore(key, value);
 		return score === null ? score : parseFloat(score);
 	};
 
@@ -177,7 +177,7 @@ module.exports = function (redisClient, module) {
 		if (!Array.isArray(keys) || !keys.length) {
 			return [];
 		}
-		const batch = redisClient.batch();
+		const batch = module.client.batch();
 		keys.forEach(key => batch.zscore(String(key), String(value)));
 		const scores = await helpers.execBatch(batch);
 		return scores.map(d => (d === null ? d : parseFloat(d)));
@@ -187,7 +187,7 @@ module.exports = function (redisClient, module) {
 		if (!values.length) {
 			return [];
 		}
-		const batch = redisClient.batch();
+		const batch = module.client.batch();
 		values.forEach(value => batch.zscore(String(key), String(value)));
 		const scores = await helpers.execBatch(batch);
 		return scores.map(d => (d === null ? d : parseFloat(d)));
@@ -199,7 +199,7 @@ module.exports = function (redisClient, module) {
 	};
 
 	module.isSortedSetMembers = async function (key, values) {
-		const batch = redisClient.batch();
+		const batch = module.client.batch();
 		values.forEach(v => batch.zscore(key, String(v)));
 		const results = await helpers.execBatch(batch);
 		return results.map(utils.isNumber);
@@ -209,7 +209,7 @@ module.exports = function (redisClient, module) {
 		if (!Array.isArray(keys) || !keys.length) {
 			return [];
 		}
-		const batch = redisClient.batch();
+		const batch = module.client.batch();
 		keys.forEach(k => batch.zscore(k, String(value)));
 		const results = await helpers.execBatch(batch);
 		return results.map(utils.isNumber);
@@ -219,13 +219,13 @@ module.exports = function (redisClient, module) {
 		if (!Array.isArray(keys) || !keys.length) {
 			return [];
 		}
-		var batch = redisClient.batch();
+		var batch = module.client.batch();
 		keys.forEach(k => batch.zrange(k, 0, -1));
 		return await helpers.execBatch(batch);
 	};
 
 	module.sortedSetIncrBy = async function (key, increment, value) {
-		const newValue = await redisClient.async.zincrby(key, increment, value);
+		const newValue = await module.client.async.zincrby(key, increment, value);
 		return parseFloat(newValue);
 	};
 
@@ -266,6 +266,6 @@ module.exports = function (redisClient, module) {
 		if (count) {
 			args.push('LIMIT', start, count);
 		}
-		return await redisClient.async[method](args);
+		return await module.client.async[method](args);
 	}
 };

src/database/redis/sorted/add.js

@@ -1,6 +1,6 @@
 'use strict';
 
-module.exports = function (redisClient, module) {
+module.exports = function (module) {
 	const helpers = require('../helpers');
 	const utils = require('../../../utils');
 
@@ -14,7 +14,7 @@ module.exports = function (redisClient, module) {
 		if (!utils.isNumber(score)) {
 			throw new Error('[[error:invalid-score, ' + score + ']]');
 		}
-		await redisClient.async.zadd(key, score, String(value));
+		await module.client.async.zadd(key, score, String(value));
 	};
 
 	async function sortedSetAddMulti(key, scores, values) {
@@ -34,7 +34,7 @@ module.exports = function (redisClient, module) {
 		for (var i = 0; i < scores.length; i += 1) {
 			args.push(scores[i], String(values[i]));
 		}
-		await redisClient.async.zadd(args);
+		await module.client.async.zadd(args);
 	}
 
 	module.sortedSetsAdd = async function (keys, scores, value) {
@@ -50,7 +50,7 @@ module.exports = function (redisClient, module) {
 			throw new Error('[[error:invalid-data]]');
 		}
 
-		var batch = redisClient.batch();
+		var batch = module.client.batch();
 		for (var i = 0; i < keys.length; i += 1) {
 			if (keys[i]) {
 				batch.zadd(keys[i], isArrayOfScores ? scores[i] : scores, String(value));
@@ -63,7 +63,7 @@ module.exports = function (redisClient, module) {
 		if (!Array.isArray(data) || !data.length) {
 			return;
 		}
-		var batch = redisClient.batch();
+		var batch = module.client.batch();
 		data.forEach(function (item) {
 			batch.zadd(item[0], item[1], item[2]);
 		});

src/database/redis/sorted/intersect.js

@@ -1,7 +1,7 @@
 
 'use strict';
 
-module.exports = function (redisClient, module) {
+module.exports = function (module) {
 	const helpers = require('../helpers');
 	module.sortedSetIntersectCard = async function (keys) {
 		if (!Array.isArray(keys) || !keys.length) {
@@ -11,7 +11,7 @@ module.exports = function (redisClient, module) {
 
 		var interParams = [tempSetName, keys.length].concat(keys);
 
-		var multi = redisClient.multi();
+		var multi = module.client.multi();
 		multi.zinterstore(interParams);
 		multi.zcard(tempSetName);
 		multi.del(tempSetName);
@@ -51,7 +51,7 @@ module.exports = function (redisClient, module) {
 			rangeParams.push('WITHSCORES');
 		}
 
-		var multi = redisClient.multi();
+		var multi = module.client.multi();
 		multi.zinterstore(interParams);
 		multi[params.method](rangeParams);
 		multi.del(tempSetName);

src/database/redis/sorted/remove.js

@@ -1,7 +1,7 @@
 
 'use strict';
 
-module.exports = function (redisClient, module) {
+module.exports = function (module) {
 	var helpers = require('../helpers');
 
 	module.sortedSetRemove = async function (key, value) {
@@ -17,11 +17,11 @@ module.exports = function (redisClient, module) {
 		}
 
 		if (Array.isArray(key)) {
-			const batch = redisClient.batch();
+			const batch = module.client.batch();
 			key.forEach(k => batch.zrem(k, value));
 			await helpers.execBatch(batch);
 		} else {
-			await redisClient.async.zrem(key, value);
+			await module.client.async.zrem(key, value);
 		}
 	};
 
@@ -30,7 +30,7 @@ module.exports = function (redisClient, module) {
 	};
 
 	module.sortedSetsRemoveRangeByScore = async function (keys, min, max) {
-		var batch = redisClient.batch();
+		var batch = module.client.batch();
 		keys.forEach(k => batch.zremrangebyscore(k, min, max));
 		await helpers.execBatch(batch);
 	};
@@ -39,7 +39,7 @@ module.exports = function (redisClient, module) {
 		if (!Array.isArray(data) || !data.length) {
 			return;
 		}
-		const batch = redisClient.batch();
+		const batch = module.client.batch();
 		data.forEach(item => batch.zrem(item[0], item[1]));
 		await helpers.execBatch(batch);
 	};

src/database/redis/sorted/union.js

@@ -1,14 +1,14 @@
 
 'use strict';
 
-module.exports = function (redisClient, module) {
+module.exports = function (module) {
 	const helpers = require('../helpers');
 	module.sortedSetUnionCard = async function (keys) {
 		var tempSetName = 'temp_' + Date.now();
 		if (!keys.length) {
 			return 0;
 		}
-		var multi = redisClient.multi();
+		var multi = module.client.multi();
 		multi.zunionstore([tempSetName, keys.length].concat(keys));
 		multi.zcard(tempSetName);
 		multi.del(tempSetName);
@@ -38,7 +38,7 @@ module.exports = function (redisClient, module) {
 			rangeParams.push('WITHSCORES');
 		}
 
-		var multi = redisClient.multi();
+		var multi = module.client.multi();
 		multi.zunionstore([tempSetName, params.sets.length].concat(params.sets));
 		multi[params.method](rangeParams);
 		multi.del(tempSetName);

src/database/redis/transaction.js

@@ -1,8 +1,8 @@
 'use strict';
 
-module.exports = function (db, module) {
+module.exports = function (module) {
 	// TODO
 	module.transaction = function (perform, callback) {
-		perform(db, callback);
+		perform(module.client, callback);
 	};
 };