Use new redis-sharelatex instead of RedisBackend for cluster abstraction

services/document-updater/app.coffee

@@ -8,7 +8,6 @@ if Settings.sentry?.dsn?
 
 RedisManager = require('./app/js/RedisManager')
 DispatchManager = require('./app/js/DispatchManager')
-Keys = require('./app/js/RedisKeyBuilder')
 Errors = require "./app/js/Errors"
 HttpController = require "./app/js/HttpController"
 
@@ -63,15 +62,18 @@ app.get '/status', (req, res)->
 	else
 		res.send('document updater is alive')
 
-redisCheck = require("redis-sharelatex").activeHealthCheckRedis(Settings.redis.web)
-app.get "/health_check/redis", (req, res, next)->
-	if redisCheck.isAlive()
-		res.send 200
-	else
-		res.send 500
+webRedisClient = require("redis-sharelatex").createClient(Settings.redis.web)
+app.get "/health_check/redis", (req, res, next) ->
+	webRedisClient.healthCheck (error) ->
+		if error?
+			logger.err {err: error}, "failed redis health check"
+			res.send 500
+		else
+			res.send 200
 
+docUpdaterRedisClient = require("redis-sharelatex").createClient(Settings.redis.documentupdater)
 app.get "/health_check/redis_cluster", (req, res, next) ->
-	RedisManager.rclient.healthCheck (error, alive) ->
+	docUpdaterRedisClient.healthCheck (error) ->
 		if error?
 			logger.err {err: error}, "failed redis cluster health check"
 			res.send 500

services/document-updater/app/coffee/RedisBackend.coffee

@@ -1,206 +0,0 @@
-Settings = require "settings-sharelatex"
-async = require "async"
-_ = require "underscore"
-logger = require "logger-sharelatex"
-Metrics = require "metrics-sharelatex"
-
-class Client
-	constructor: (@clients) ->
-		@SECONDARY_TIMEOUT = 600
-		@HEARTBEAT_TIMEOUT = 2000
-		
-	multi: () ->
-		return new MultiClient(
-			@clients.map (client) -> {
-				rclient: client.rclient.multi()
-				key_schema: client.key_schema
-				primary: client.primary
-				driver: client.driver
-			}
-		)
-
-	healthCheck: (callback) ->
-		jobs = @clients.map (client) =>
-			(cb) => @_healthCheckClient(client, cb)
-		async.parallel jobs, callback
-	
-	_healthCheckClient: (client, callback) ->
-		if client.driver == "ioredis"
-			@_healthCheckClusterClient(client, callback)
-		else
-			@_healthCheckNodeRedisClient(client, callback)
-	
-	_healthCheckNodeRedisClient: (client, callback) ->
-		client.healthCheck ?= require("redis-sharelatex").activeHealthCheckRedis(Settings.redis.web)
-		if client.healthCheck.isAlive()
-			return callback()
-		else
-			return callback(new Error("node-redis client failed health check"))
-	
-	_healthCheckClusterClient: (client, callback) ->
-		jobs = client.rclient.nodes("all").map (n) =>
-			(cb) => @_checkNode(n, cb)
-		async.parallel jobs, callback
-	
-	_checkNode: (node, _callback) ->
-		callback = (args...) ->
-			_callback(args...)
-			_callback = () ->
-		timer = setTimeout () ->
-			error = new Error("ioredis node ping check timed out")
-			logger.error {err: error, key: node.options.key}, "node timed out"
-			callback(error)
-		, @HEARTBEAT_TIMEOUT
-		node.ping (err) ->
-			clearTimeout timer
-			callback(err)
-
-class MultiClient
-	constructor: (@clients) ->
-		@SECONDARY_TIMEOUT = 600
-	
-	exec: (callback) ->
-		primaryError = null
-		primaryResult = null
-		jobs = @clients.map (client) =>
-			(cb) =>
-				cb = _.once(cb)
-				timer = new Metrics.Timer("redis.#{client.driver}.exec")
-				
-				timeout = null
-				if !client.primary
-					timeout = setTimeout () ->
-						logger.error {err: new Error("#{client.driver} backend timed out")}, "backend timed out"
-						cb()
-					, @SECONDARY_TIMEOUT
-
-				client.rclient.exec (error, result) =>
-					timer.done()
-					if client.driver == "ioredis"
-						# ioredis returns an results like:
-						# [ [null, 42], [null, "foo"] ]
-						# where the first entries in each 2-tuple are
-						# presumably errors for each individual command,
-						# and the second entry is the result. We need to transform
-						# this into the same result as the old redis driver:
-						# [ 42, "foo" ]
-						filtered_result = []
-						for entry in result or []
-							if entry[0]?
-								return cb(entry[0])
-							else
-								filtered_result.push entry[1]
-						result = filtered_result
-						
-					if client.primary
-						primaryError = error
-						primaryResult = result
-					if timeout?
-						clearTimeout(timeout)
-					cb(error, result)
-		async.parallel jobs, (error, results) ->
-			if error?
-				# suppress logging of errors
-				# logger.error {err: error}, "error in redis backend"
-			else
-				compareResults(results, "exec")
-			callback(primaryError, primaryResult)
-
-COMMANDS = {
-	"get": 0,
-	"smembers": 0,
-	"set": 0,
-	"srem": 0,
-	"sadd": 0,
-	"del": 0,
-	"lrange": 0,
-	"llen": 0,
-	"rpush": 0,
-	"expire": 0,
-	"ltrim": 0,
-	"incr": 0,
-	"eval": 2
-}
-for command, key_pos of COMMANDS
-	do (command, key_pos) ->
-		Client.prototype[command] = (args..., callback) ->
-			primaryError = null
-			primaryResult = []
-			jobs = @clients.map (client) =>
-				(cb) =>
-					cb = _.once(cb)
-					key_builder = args[key_pos]
-					key = key_builder(client.key_schema)
-					args_with_key = args.slice(0)
-					args_with_key[key_pos] = key
-					timer = new Metrics.Timer("redis.#{client.driver}.#{command}")
-					
-					timeout = null
-					if !client.primary
-						timeout = setTimeout () ->
-							logger.error {err: new Error("#{client.driver} backend timed out")}, "backend timed out"
-							cb()
-						, @SECONDARY_TIMEOUT
-					
-					client.rclient[command] args_with_key..., (error, result...) =>
-						timer.done()
-						if client.primary
-							primaryError = error
-							primaryResult = result
-						if timeout?
-							clearTimeout(timeout)
-						cb(error, result...)
-			async.parallel jobs, (error, results) ->
-				if error?
-					logger.error {err: error}, "error in redis backend"
-				else
-					compareResults(results, command)
-				callback(primaryError, primaryResult...)
-
-		MultiClient.prototype[command] = (args...) ->
-			for client in @clients
-				key_builder = args[key_pos]
-				key = key_builder(client.key_schema)
-				args_with_key = args.slice(0)
-				args_with_key[key_pos] = key
-				client.rclient[command] args_with_key...
-
-compareResults = (results, command) ->
-	return if results.length < 2
-	first = results[0]
-	if command == "smembers" and first?
-		first = first.slice().sort()
-	for result in results.slice(1)
-		if command == "smembers" and result?
-			result = result.slice().sort()
-		if not _.isEqual(first, result)
-			logger.error results: results, "redis backend conflict"
-			Metrics.inc "backend-conflict"
-		else
-			Metrics.inc "backend-match"
-
-module.exports =
-	createClient: () ->
-		client_configs = Settings.redis.documentupdater
-		unless client_configs instanceof Array
-			client_configs.primary = true
-			client_configs = [client_configs]
-		clients = client_configs.map (config) ->
-			if config.cluster?
-				Redis = require("ioredis")
-				rclient = new Redis.Cluster(config.cluster)
-				driver = "ioredis"
-			else
-				redis_config = {}
-				for key in ["host", "port", "password", "endpoints", "masterName"]
-					if config[key]?
-						redis_config[key] = config[key]
-				rclient = require("redis-sharelatex").createClient(redis_config)
-				driver = "noderedis"
-			return {
-				rclient: rclient
-				key_schema: config.key_schema
-				primary: config.primary
-				driver: driver
-			}
-		return new Client(clients)

services/document-updater/app/coffee/RedisKeyBuilder.coffee

@@ -1,44 +0,0 @@
-# The default key schema looks like:
-# 	doclines:foo
-# 	DocVersion:foo
-# but if we use redis cluster, we want all 'foo' keys to map to the same
-# node, so we must use:
-# 	doclines:{foo}
-# 	DocVersion:{foo}
-# since redis hashes on the contents of {...}.
-# 
-# To transparently support different key schemas for different clients
-# (potential writing/reading to both a cluster and single instance 
-# while we migrate), instead of keys, we now pass around functions which
-# will build the key when passed a schema.
-# 
-# E.g.
-# key_schema = Settings.redis.keys
-# key_schema == { docLines: ({doc_id}) -> "doclines:#{doc_id}", ... }
-# key_builder = RedisKeyBuilder.docLines({doc_id: "foo"})
-# key_builder == (key_schema) -> key_schema.docLines({doc_id: "foo"})
-# key = key_builder(key_schema)
-# key == "doclines:foo"
-module.exports = RedisKeyBuilder =
-	blockingKey: ({doc_id}) ->
-		return (key_schema) -> key_schema.blockingKey({doc_id})
-	docLines: ({doc_id}) ->
-		return (key_schema) -> key_schema.docLines({doc_id})
-	docOps: ({doc_id}) ->
-		return (key_schema) -> key_schema.docOps({doc_id})
-	docVersion: ({doc_id}) ->
-		return (key_schema) -> key_schema.docVersion({doc_id})
-	docHash: ({doc_id}) ->
-		return (key_schema) -> key_schema.docHash({doc_id})
-	projectKey: ({doc_id}) ->
-		return (key_schema) -> key_schema.projectKey({doc_id})
-	uncompressedHistoryOp: ({doc_id}) ->
-		return (key_schema) -> key_schema.uncompressedHistoryOp({doc_id})
-	pendingUpdates: ({doc_id}) ->
-		return (key_schema) -> key_schema.pendingUpdates({doc_id})
-	ranges: ({doc_id}) ->
-		return (key_schema) -> key_schema.ranges({doc_id})
-	docsInProject: ({project_id}) ->
-		return (key_schema) -> key_schema.docsInProject({project_id})
-	docsWithHistoryOps: ({project_id}) ->
-		return (key_schema) -> key_schema.docsWithHistoryOps({project_id})

services/document-updater/app/coffee/RedisManager.coffee

@@ -1,8 +1,7 @@
 Settings = require('settings-sharelatex')
 async = require('async')
-rclient = require("./RedisBackend").createClient()
+rclient = require("redis-sharelatex").createClient(Settings.redis.documentupdater)
 _ = require('underscore')
-keys = require('./RedisKeyBuilder')
 logger = require('logger-sharelatex')
 metrics = require('./Metrics')
 Errors = require "./Errors"
@@ -25,6 +24,8 @@ logHashWriteErrors = logHashErrors?.write
 MEGABYTES = 1024 * 1024
 MAX_RANGES_SIZE = 3 * MEGABYTES
 
+keys = Settings.redis.documentupdater.key_schema
+
 module.exports = RedisManager =
 	rclient: rclient
 

services/document-updater/config/settings.defaults.coffee

@@ -20,11 +20,10 @@ module.exports =
 			port:"6379"
 			host:"localhost"
 			password:""
-		documentupdater: [{
-			primary: true
-			port:"6379"
-			host:"localhost"
-			password:""
+		documentupdater:
+			port: "6379"
+			host: "localhost"
+			password: ""
 			key_schema:
 				blockingKey: ({doc_id}) -> "Blocking:#{doc_id}"
 				docLines: ({doc_id}) -> "doclines:#{doc_id}"
@@ -34,20 +33,19 @@ module.exports =
 				projectKey: ({doc_id}) -> "ProjectId:#{doc_id}"
 				docsInProject: ({project_id}) -> "DocsIn:#{project_id}"
 				ranges: ({doc_id}) -> "Ranges:#{doc_id}"
-		# }, {
-		# 	cluster: [{
-		# 		port: "7000"
-		# 		host: "localhost"
-		# 	}]
-		# 	key_schema:
-		# 		blockingKey: ({doc_id}) -> "Blocking:{#{doc_id}}"
-		# 		docLines: ({doc_id}) -> "doclines:{#{doc_id}}"
-		# 		docOps: ({doc_id}) -> "DocOps:{#{doc_id}}"
-		# 		docVersion: ({doc_id}) -> "DocVersion:{#{doc_id}}"
-		# 		projectKey: ({doc_id}) -> "ProjectId:{#{doc_id}}"
-		# 		docsInProject: ({project_id}) -> "DocsIn:{#{project_id}}"
-		# 		ranges: ({doc_id}) -> "Ranges:{#{doc_id}}"
-		}]
+			# cluster: [{
+			# 	port: "7000"
+			# 	host: "localhost"
+			# }]
+			# key_schema:
+			# 	blockingKey: ({doc_id}) -> "Blocking:{#{doc_id}}"
+			# 	docLines: ({doc_id}) -> "doclines:{#{doc_id}}"
+			# 	docOps: ({doc_id}) -> "DocOps:{#{doc_id}}"
+			# 	docVersion: ({doc_id}) -> "DocVersion:{#{doc_id}}"
+			# 	docHash: ({doc_id}) -> "DocHash:{#{doc_id}}"
+			# 	projectKey: ({doc_id}) -> "ProjectId:{#{doc_id}}"
+			# 	docsInProject: ({project_id}) -> "DocsIn:{#{project_id}}"
+			# 	ranges: ({doc_id}) -> "Ranges:{#{doc_id}}"
 	
 	max_doc_length: 2 * 1024 * 1024 # 2mb
 

services/document-updater/package.json

@@ -14,7 +14,7 @@
     "logger-sharelatex": "git+https://github.com/sharelatex/logger-sharelatex.git#v1.5.6",
     "lynx": "0.0.11",
     "metrics-sharelatex": "git+https://github.com/sharelatex/metrics-sharelatex.git#v1.5.0",
-    "redis-sharelatex": "0.0.9",
+    "redis-sharelatex": "git+https://github.com/sharelatex/redis-sharelatex.git#v1.0.0",
     "request": "2.25.0",
     "sandboxed-module": "~0.2.0",
     "settings-sharelatex": "git+https://github.com/sharelatex/settings-sharelatex.git#v1.0.0",

services/document-updater/test/acceptance/coffee/ApplyingUpdatesToADocTests.coffee

@@ -4,7 +4,9 @@ chai.should()
 expect = chai.expect
 async = require "async"
 Settings = require('settings-sharelatex')
-rclient = require("redis-sharelatex").createClient(Settings.redis.web)
+rclient_web = require("redis-sharelatex").createClient(Settings.redis.web)
+rclient_du = require("redis-sharelatex").createClient(Settings.redis.documentupdater)
+Keys = Settings.redis.documentupdater.key_schema
 
 MockTrackChangesApi = require "./helpers/MockTrackChangesApi"
 MockWebApi = require "./helpers/MockWebApi"
@@ -47,10 +49,10 @@ describe "Applying updates to a doc", ->
 				done()
 
 		it "should push the applied updates to the track changes api", (done) ->
-			rclient.lrange "UncompressedHistoryOps:#{@doc_id}", 0, -1, (error, updates) =>
+			rclient_web.lrange "UncompressedHistoryOps:#{@doc_id}", 0, -1, (error, updates) =>
 				throw error if error?
 				JSON.parse(updates[0]).op.should.deep.equal @update.op
-				rclient.sismember "DocsWithHistoryOps:#{@project_id}", @doc_id, (error, result) =>
+				rclient_web.sismember "DocsWithHistoryOps:#{@project_id}", @doc_id, (error, result) =>
 					throw error if error?
 					result.should.equal 1
 					done()
@@ -80,9 +82,9 @@ describe "Applying updates to a doc", ->
 				done()
 
 		it "should push the applied updates to the track changes api", (done) ->
-			rclient.lrange "UncompressedHistoryOps:#{@doc_id}", 0, -1, (error, updates) =>
+			rclient_web.lrange "UncompressedHistoryOps:#{@doc_id}", 0, -1, (error, updates) =>
 				JSON.parse(updates[0]).op.should.deep.equal @update.op
-				rclient.sismember "DocsWithHistoryOps:#{@project_id}", @doc_id, (error, result) =>
+				rclient_web.sismember "DocsWithHistoryOps:#{@project_id}", @doc_id, (error, result) =>
 					result.should.equal 1
 					done()
 
@@ -125,17 +127,17 @@ describe "Applying updates to a doc", ->
 						done()
 
 			it "should push the applied updates to the track changes api", (done) ->
-				rclient.lrange "UncompressedHistoryOps:#{@doc_id}", 0, -1, (error, updates) =>
+				rclient_web.lrange "UncompressedHistoryOps:#{@doc_id}", 0, -1, (error, updates) =>
 					updates = (JSON.parse(u) for u in updates)
 					for appliedUpdate, i in @updates
 						appliedUpdate.op.should.deep.equal updates[i].op
 
-					rclient.sismember "DocsWithHistoryOps:#{@project_id}", @doc_id, (error, result) =>
+					rclient_web.sismember "DocsWithHistoryOps:#{@project_id}", @doc_id, (error, result) =>
 						result.should.equal 1
 						done()
 			
 			it "should store the doc ops in the correct order", (done) ->
-				rclient.lrange "DocOps:#{@doc_id}", 0, -1, (error, updates) =>
+				rclient_du.lrange Keys.docOps({doc_id: @doc_id}), 0, -1, (error, updates) =>
 					updates = (JSON.parse(u) for u in updates)
 					for appliedUpdate, i in @updates
 						appliedUpdate.op.should.deep.equal updates[i].op

services/document-updater/test/acceptance/coffee/SettingADocumentTests.coffee

@@ -3,7 +3,8 @@ chai = require("chai")
 chai.should()
 expect = require("chai").expect
 Settings = require('settings-sharelatex')
-rclient = require("redis-sharelatex").createClient(Settings.redis.web)
+rclient_du = require("redis-sharelatex").createClient(Settings.redis.documentupdater)
+Keys = Settings.redis.documentupdater.key_schema
 
 MockTrackChangesApi = require "./helpers/MockTrackChangesApi"
 MockWebApi = require "./helpers/MockWebApi"
@@ -65,7 +66,7 @@ describe "Setting a document", ->
 				done()
 		
 		it "should leave the document in redis", (done) ->
-			rclient.get "doclines:#{@doc_id}", (error, lines) =>
+			rclient_du.get Keys.docLines({doc_id: @doc_id}), (error, lines) =>
 				throw error if error?
 				expect(JSON.parse(lines)).to.deep.equal @newLines
 				done()
@@ -90,7 +91,7 @@ describe "Setting a document", ->
 			MockTrackChangesApi.flushDoc.calledWith(@doc_id).should.equal true
 		
 		it "should remove the document from redis", (done) ->
-			rclient.get "doclines:#{@doc_id}", (error, lines) =>
+			rclient_du.get Keys.docLines({doc_id: @doc_id}), (error, lines) =>
 				throw error if error?
 				expect(lines).to.not.exist
 				done()

services/document-updater/test/unit/coffee/RedisBackend/RedisBackendTests.coffee

@@ -1,504 +0,0 @@
-sinon = require('sinon')
-chai = require('chai')
-should = chai.should()
-modulePath = "../../../../app/js/RedisBackend.js"
-SandboxedModule = require('sandboxed-module')
-RedisKeyBuilder = require "../../../../app/js/RedisKeyBuilder"
-
-describe "RedisBackend", ->
-	beforeEach ->
-		@Settings =
-			redis:
-				documentupdater: [{
-					primary: true
-					port: "6379"
-					host: "localhost"
-					password: "single-password"
-					key_schema:
-						blockingKey: ({doc_id}) -> "Blocking:#{doc_id}"
-						docLines: ({doc_id}) -> "doclines:#{doc_id}"
-						docOps: ({doc_id}) -> "DocOps:#{doc_id}"
-						docVersion: ({doc_id}) -> "DocVersion:#{doc_id}"
-						docHash: ({doc_id}) -> "DocHash:#{doc_id}"
-						projectKey: ({doc_id}) -> "ProjectId:#{doc_id}"
-						pendingUpdates: ({doc_id}) -> "PendingUpdates:#{doc_id}"
-						docsInProject: ({project_id}) -> "DocsIn:#{project_id}"
-				}, {
-					cluster: [{
-						port: "7000"
-						host: "localhost"
-					}]
-					password: "cluster-password"
-					key_schema:
-						blockingKey: ({doc_id}) -> "Blocking:{#{doc_id}}"
-						docLines: ({doc_id}) -> "doclines:{#{doc_id}}"
-						docOps: ({doc_id}) -> "DocOps:{#{doc_id}}"
-						docVersion: ({doc_id}) -> "DocVersion:{#{doc_id}}"
-						docHash: ({doc_id}) -> "DocHash:{#{doc_id}}"
-						projectKey: ({doc_id}) -> "ProjectId:{#{doc_id}}"
-						pendingUpdates: ({doc_id}) -> "PendingUpdates:{#{doc_id}}"
-						docsInProject: ({project_id}) -> "DocsIn:{#{project_id}}"
-				}]
-
-		test_context = @
-		class Cluster
-			constructor: (@config) ->
-				test_context.rclient_ioredis = @
-			
-			nodes: sinon.stub()
-		
-		@timer = timer = sinon.stub()
-		class Timer
-			constructor: (args...) -> timer(args...)
-			done: () ->
-
-		@RedisBackend = SandboxedModule.require modulePath, requires:
-			"settings-sharelatex": @Settings
-			"logger-sharelatex": @logger = { error: sinon.stub(), log: sinon.stub(), warn: sinon.stub() }
-			"redis-sharelatex": @redis =
-				createClient: sinon.stub().returns @rclient_redis = {}
-				activeHealthCheck: sinon.stub()
-			"ioredis": @ioredis =
-				Cluster: Cluster
-			"metrics-sharelatex":
-				@Metrics =
-					inc: sinon.stub()
-					Timer: Timer
-				
-		@client = @RedisBackend.createClient()
-		
-		@doc_id = "mock-doc-id"
-		@project_id = "mock-project-id"
-	
-	it "should create a redis client", ->
-		@redis.createClient
-			.calledWith({
-				port: "6379"
-				host: "localhost"
-				password: "single-password"
-			})
-			.should.equal true
-	
-	it "should create an ioredis cluster client", ->
-		@rclient_ioredis.config.should.deep.equal [{
-			port: "7000"
-			host: "localhost"
-		}]
-
-	describe "individual commands", ->
-		describe "with the same results", ->
-			beforeEach (done) ->
-				@content = "bar"
-				@rclient_redis.get = sinon.stub()
-				@rclient_redis.get.withArgs("doclines:#{@doc_id}").yields(null, @content)
-				@rclient_ioredis.get = sinon.stub()
-				@rclient_ioredis.get.withArgs("doclines:{#{@doc_id}}").yields(null, @content)
-				@client.get RedisKeyBuilder.docLines({doc_id: @doc_id}), (error, @result) =>
-					setTimeout () -> # Let all background requests complete
-						done(error)
-			
-			it "should return the result", ->
-				@result.should.equal @content
-			
-			it "should have called the redis client with the appropriate key", ->
-				@rclient_redis.get
-					.calledWith("doclines:#{@doc_id}")
-					.should.equal true
-				
-			it "should have called the ioredis cluster client with the appropriate key", ->
-				@rclient_ioredis.get
-					.calledWith("doclines:{#{@doc_id}}")
-					.should.equal true
-				
-			it "should send a metric", ->
-				@Metrics.inc
-					.calledWith("backend-match")
-					.should.equal true
-			
-			it "should time the commands", ->
-				@timer
-					.calledWith("redis.ioredis.get")
-					.should.equal true
-				@timer
-					.calledWith("redis.noderedis.get")
-					.should.equal true
-
-		describe "with different results", ->
-			beforeEach (done) ->
-				@rclient_redis.get = sinon.stub()
-				@rclient_redis.get.withArgs("doclines:#{@doc_id}").yields(null, "primary-result")
-				@rclient_ioredis.get = sinon.stub()
-				@rclient_ioredis.get.withArgs("doclines:{#{@doc_id}}").yields(null, "secondary-result")
-				@client.get RedisKeyBuilder.docLines({doc_id: @doc_id}), (error, @result) =>
-					setTimeout () -> # Let all background requests complete
-						done(error)
-			
-			it "should return the primary result", ->
-				@result.should.equal "primary-result"
-			
-			it "should send a metric", ->
-				@Metrics.inc
-					.calledWith("backend-conflict")
-					.should.equal true
-
-		describe "with differently ordered results from smembers", ->
-			beforeEach (done) ->
-				@rclient_redis.smembers = sinon.stub()
-				@rclient_redis.smembers.withArgs("DocsIn:#{@project_id}").yields(null, ["one", "two"])
-				@rclient_ioredis.smembers = sinon.stub()
-				@rclient_ioredis.smembers.withArgs("DocsIn:{#{@project_id}}").yields(null, ["two", "one"])
-				@client.smembers RedisKeyBuilder.docsInProject({project_id: @project_id}), (error, @result) =>
-					setTimeout () -> # Let all background requests complete
-						done(error)
-			
-			it "should return the primary result", ->
-				@result.should.deep.equal ["one", "two"]
-			
-			it "should send a metric indicating a match", ->
-				@Metrics.inc
-					.calledWith("backend-match")
-					.should.equal true
-
-		describe "when the secondary errors", ->
-			beforeEach (done) ->
-				@rclient_redis.get = sinon.stub()
-				@rclient_redis.get.withArgs("doclines:#{@doc_id}").yields(null, "primary-result")
-				@rclient_ioredis.get = sinon.stub()
-				@rclient_ioredis.get.withArgs("doclines:{#{@doc_id}}").yields(@error = new Error("oops"))
-				@client.get RedisKeyBuilder.docLines({doc_id: @doc_id}), (error, @result) =>
-					setTimeout () -> # Let all background requests complete
-						done(error)
-			
-			it "should return the primary result", ->
-				@result.should.equal "primary-result"
-			
-			it "should log out the secondary error", ->
-				@logger.error
-					.calledWith({
-						err: @error
-					}, "error in redis backend")
-					.should.equal true
-
-		describe "when the primary errors", ->
-			beforeEach (done) ->
-				@rclient_redis.get = sinon.stub()
-				@rclient_redis.get.withArgs("doclines:#{@doc_id}").yields(@error = new Error("oops"))
-				@rclient_ioredis.get = sinon.stub()
-				@rclient_ioredis.get.withArgs("doclines:{#{@doc_id}}").yields(null, "secondary-result")
-				@client.get RedisKeyBuilder.docLines({doc_id: @doc_id}), (@returned_error, @result) =>
-					setTimeout () -> # Let all background requests complete
-						done()
-			
-			it "should return the error", ->
-				@returned_error.should.equal @error
-			
-			it "should log out the error", ->
-				@logger.error
-					.calledWith({
-						err: @error
-					}, "error in redis backend")
-					.should.equal true
-		
-		describe "when the command has the key in a non-zero argument index", ->
-			beforeEach (done) ->
-				@script = "mock-script"
-				@key_count = 1
-				@value = "mock-value"
-				@rclient_redis.eval = sinon.stub()
-				@rclient_redis.eval.withArgs(@script, @key_count, "Blocking:#{@doc_id}", @value).yields(null)
-				@rclient_ioredis.eval = sinon.stub()
-				@rclient_ioredis.eval.withArgs(@script, @key_count, "Blocking:{#{@doc_id}}", @value).yields(null, @content)
-				@client.eval @script, @key_count, RedisKeyBuilder.blockingKey({doc_id: @doc_id}), @value, (error) =>
-					setTimeout () -> # Let all background requests complete
-						done(error)
-			
-			it "should have called the redis client with the appropriate key", ->
-				@rclient_redis.eval
-					.calledWith(@script, @key_count, "Blocking:#{@doc_id}", @value)
-					.should.equal true
-				
-			it "should have called the ioredis cluster client with the appropriate key", ->
-				@rclient_ioredis.eval
-					.calledWith(@script, @key_count, "Blocking:{#{@doc_id}}", @value)
-					.should.equal true
-		
-		describe "when the secondary takes longer than SECONDARY_TIMEOUT", ->
-			beforeEach (done) ->
-				@client.SECONDARY_TIMEOUT = 10
-				@content = "bar"
-				@rclient_redis.get = (key, cb) =>
-					key.should.equal "doclines:#{@doc_id}"
-					setTimeout () =>
-						cb(null, @content)
-					, @client.SECONDARY_TIMEOUT * 3 # If the secondary errors first, don't affect the primary result
-				@rclient_ioredis.get = (key, cb) =>
-					key.should.equal "doclines:{#{@doc_id}}"
-					setTimeout () =>
-						cb(null, @content)
-					, @client.SECONDARY_TIMEOUT * 2
-				@client.get RedisKeyBuilder.docLines({doc_id: @doc_id}), (error, @result) =>
-					done(error)
-		
-			it "should log out an error for the backend", ->
-				@logger.error
-					.calledWith({err: new Error("backend timed out")}, "backend timed out")
-					.should.equal true
-			
-			it "should return the primary result", ->
-				@result.should.equal @content
-
-		describe "when the primary takes longer than SECONDARY_TIMEOUT", ->
-			beforeEach (done) ->
-				@client.SECONDARY_TIMEOUT = 10
-				@content = "bar"
-				@rclient_ioredis.get = sinon.stub()
-				@rclient_ioredis.get.withArgs("doclines:{#{@doc_id}}").yields(null, @content)
-				@rclient_redis.get = (key, cb) =>
-					key.should.equal "doclines:#{@doc_id}"
-					setTimeout () =>
-						cb(null, @content)
-					, @client.SECONDARY_TIMEOUT * 2
-				@client.get RedisKeyBuilder.docLines({doc_id: @doc_id}), (error, @result) =>
-					done(error)
-		
-			it "should not consider this an error", ->
-				@logger.error
-					.called
-					.should.equal false
-
-	describe "multi commands", ->
-		beforeEach ->
-			# We will test with:
-			# rclient.multi()
-			#     .get("doclines:foo")
-			#     .get("DocVersion:foo")
-			#     .exec (...) ->
-			@doclines = "mock-doclines"
-			@version = "42"
-			@rclient_redis.multi = sinon.stub().returns @rclient_redis
-			@rclient_ioredis.multi = sinon.stub().returns @rclient_ioredis
-
-		describe "with the same results", ->
-			beforeEach (done) ->
-				@rclient_redis.get = sinon.stub()
-				@rclient_redis.exec = sinon.stub().yields(null, [@doclines, @version])
-				@rclient_ioredis.get = sinon.stub()
-				@rclient_ioredis.exec = sinon.stub().yields(null, [ [null, @doclines], [null, @version] ])
-				
-				multi = @client.multi()
-				multi.get RedisKeyBuilder.docLines({doc_id: @doc_id})
-				multi.get RedisKeyBuilder.docVersion({doc_id: @doc_id})
-				multi.exec (error, @result) =>
-					setTimeout () ->
-						done(error)
-			
-			it "should return the result", ->
-				@result.should.deep.equal [@doclines, @version]
-			
-			it "should have called the redis client with the appropriate keys", ->
-				@rclient_redis.get
-					.calledWith("doclines:#{@doc_id}")
-					.should.equal true
-				@rclient_redis.get
-					.calledWith("DocVersion:#{@doc_id}")
-					.should.equal true
-				@rclient_ioredis.exec
-					.called
-					.should.equal true
-				
-			it "should have called the ioredis cluster client with the appropriate keys", ->
-				@rclient_ioredis.get
-					.calledWith("doclines:{#{@doc_id}}")
-					.should.equal true
-				@rclient_ioredis.get
-					.calledWith("DocVersion:{#{@doc_id}}")
-					.should.equal true
-				@rclient_ioredis.exec
-					.called
-					.should.equal true
-				
-			it "should send a metric", ->
-				@Metrics.inc
-					.calledWith("backend-match")
-					.should.equal true
-			
-			it "should time the exec", ->
-				@timer
-					.calledWith("redis.ioredis.exec")
-					.should.equal true
-				@timer
-					.calledWith("redis.noderedis.exec")
-					.should.equal true
-
-		describe "with different results", ->
-			beforeEach (done) ->
-				@rclient_redis.get = sinon.stub()
-				@rclient_redis.exec = sinon.stub().yields(null, [@doclines, @version])
-				@rclient_ioredis.get = sinon.stub()
-				@rclient_ioredis.exec = sinon.stub().yields(null, [ [null, "different-doc-lines"], [null, @version] ])
-				
-				multi = @client.multi()
-				multi.get RedisKeyBuilder.docLines({doc_id: @doc_id})
-				multi.get RedisKeyBuilder.docVersion({doc_id: @doc_id})
-				multi.exec (error, @result) =>
-					setTimeout () ->
-						done(error)
-			
-			it "should return the primary result", ->
-				@result.should.deep.equal [@doclines, @version]
-			
-			it "should send a metric", ->
-				@Metrics.inc
-					.calledWith("backend-conflict")
-					.should.equal true
-
-		describe "when the secondary errors", ->
-			beforeEach (done) ->
-				@rclient_redis.get = sinon.stub()
-				@rclient_redis.exec = sinon.stub().yields(null, [@doclines, @version])
-				@rclient_ioredis.get = sinon.stub()
-				@rclient_ioredis.exec = sinon.stub().yields(@error = new Error("oops"))
-				
-				multi = @client.multi()
-				multi.get RedisKeyBuilder.docLines({doc_id: @doc_id})
-				multi.get RedisKeyBuilder.docVersion({doc_id: @doc_id})
-				multi.exec (error, @result) =>
-					setTimeout () ->
-						done(error)
-			
-			it "should return the primary result", ->
-				@result.should.deep.equal [@doclines, @version]
-
-		describe "when the primary errors", ->
-			beforeEach (done) ->
-				@rclient_redis.get = sinon.stub()
-				@rclient_redis.exec = sinon.stub().yields(@error = new Error("oops"))
-				@rclient_ioredis.get = sinon.stub()
-				@rclient_ioredis.exec = sinon.stub().yields([ [null, @doclines], [null, @version] ])
-				
-				multi = @client.multi()
-				multi.get RedisKeyBuilder.docLines({doc_id: @doc_id})
-				multi.get RedisKeyBuilder.docVersion({doc_id: @doc_id})
-				multi.exec (@returned_error) =>
-					setTimeout () -> done()
-			
-			it "should return the error", ->
-				@returned_error.should.equal @error
-
-		describe "when the secondary takes longer than SECONDARY_TIMEOUT", ->
-			beforeEach (done) ->
-				@rclient_redis.get = sinon.stub()
-				@rclient_redis.exec = (cb) =>
-					setTimeout () =>
-						cb(null, [@doclines, @version])
-					, 30 # If secondary errors first, don't affect the primary result
-				@rclient_ioredis.get = sinon.stub()
-				@rclient_ioredis.exec = (cb) =>
-					setTimeout () =>
-						cb(null, [ [null, @doclines], [null, @version] ])
-					, 20
-				
-				multi = @client.multi()
-				multi.SECONDARY_TIMEOUT = 10
-				multi.get RedisKeyBuilder.docLines({doc_id: @doc_id})
-				multi.get RedisKeyBuilder.docVersion({doc_id: @doc_id})
-				multi.exec (error, @result) =>
-					done(error)
-		
-			it "should log out an error for the backend", ->
-				@logger.error
-					.calledWith({err: new Error("backend timed out")}, "backend timed out")
-					.should.equal true
-			
-			it "should return the primary result", ->
-				@result.should.deep.equal [@doclines, @version]
-
-		describe "when the primary takes longer than SECONDARY_TIMEOUT", ->
-			beforeEach (done) ->
-				@rclient_redis.get = sinon.stub()
-				@rclient_redis.exec = (cb) =>
-					setTimeout () =>
-						cb(null, [@doclines, @version])
-					, 20
-				@rclient_ioredis.get = sinon.stub()
-				@rclient_ioredis.exec = sinon.stub().yields(null, [ [null, @doclines], [null, @version] ])
-			
-				multi = @client.multi()
-				multi.SECONDARY_TIMEOUT = 10
-				multi.get RedisKeyBuilder.docLines({doc_id: @doc_id})
-				multi.get RedisKeyBuilder.docVersion({doc_id: @doc_id})
-				multi.exec (error, @result) =>
-					done(error)
-		
-			it "should not consider this an error", ->
-				@logger.error
-					.called
-					.should.equal false
-	
-	describe "_healthCheckNodeRedisClient", ->
-		beforeEach ->
-			@redis.activeHealthCheckRedis = sinon.stub().returns @healthCheck = {
-				isAlive: sinon.stub()
-			}
-		
-		describe "successfully", ->
-			beforeEach (done) ->
-				@healthCheck.isAlive.returns true
-				@redis_client = {}
-				@client._healthCheckNodeRedisClient(@redis_client, done)
-
-			it "should check the status of the node redis client", ->
-				@healthCheck.isAlive.called.should.equal true
-			
-			it "should only create one health check when called multiple times", (done) ->
-				@client._healthCheckNodeRedisClient @redis_client, () =>
-					@redis.activeHealthCheckRedis.calledOnce.should.equal true
-					@healthCheck.isAlive.calledTwice.should.equal true
-					done()
-		
-		describe "when failing", ->
-			beforeEach ->
-				@healthCheck.isAlive.returns false
-				@redis_client = {}
-			
-			it "should return an error", (done) ->
-				@client._healthCheckNodeRedisClient @redis_client, (error) ->
-					error.message.should.equal "node-redis client failed health check"
-					done()
-	
-	describe "_healthCheckClusterClient", ->
-		beforeEach ->
-			@client.HEARTBEAT_TIMEOUT = 10
-			@nodes = [{
-				options: key: "node-0"
-				stream: destroy: sinon.stub()
-			}, {
-				options: key: "node-1"
-				stream: destroy: sinon.stub()
-			}]
-			@rclient_ioredis.nodes = sinon.stub().returns(@nodes)
-	
-		describe "when both clients are successful", ->
-			beforeEach (done) ->
-				@nodes[0].ping = sinon.stub().yields()
-				@nodes[1].ping = sinon.stub().yields()
-				@client._healthCheckClusterClient({ rclient: @rclient_ioredis }, done)
-			
-			it "should get all cluster nodes", ->
-				@rclient_ioredis.nodes
-					.calledWith("all")
-					.should.equal true
-			
-			it "should ping each cluster node", ->
-				for node in @nodes
-					node.ping.called.should.equal true
-		
-		describe "when ping fails to a node", ->
-			beforeEach ->
-				@nodes[0].ping = (cb) -> cb()
-				@nodes[1].ping = (cb) -> # Just hang
-			
-			it "should return an error", (done) ->
-				@client._healthCheckClusterClient { rclient: @rclient_ioredis }, (error) ->
-					error.message.should.equal "ioredis node ping check timed out"
-					done()

services/document-updater/test/unit/coffee/RedisManager/RedisManagerTests.coffee

@@ -14,20 +14,24 @@ describe "RedisManager", ->
 		@rclient.multi = () => @rclient
 		@RedisManager = SandboxedModule.require modulePath,
 			requires:
-				"./RedisBackend":
-					createClient: () => @rclient
-				"./RedisKeyBuilder":
-					blockingKey: ({doc_id}) -> "Blocking:#{doc_id}"
-					docLines: ({doc_id}) -> "doclines:#{doc_id}"
-					docOps: ({doc_id}) -> "DocOps:#{doc_id}"
-					docVersion: ({doc_id}) -> "DocVersion:#{doc_id}"
-					docHash: ({doc_id}) -> "DocHash:#{doc_id}"
-					projectKey: ({doc_id}) -> "ProjectId:#{doc_id}"
-					pendingUpdates: ({doc_id}) -> "PendingUpdates:#{doc_id}"
-					docsInProject: ({project_id}) -> "DocsIn:#{project_id}"
-					ranges: ({doc_id}) -> "Ranges:#{doc_id}"
 				"logger-sharelatex": @logger = { error: sinon.stub(), log: sinon.stub(), warn: sinon.stub() }
-				"settings-sharelatex": {documentupdater: {logHashErrors: {write:true, read:true}}}
+				"settings-sharelatex": {
+					documentupdater: {logHashErrors: {write:true, read:true}}
+					redis:
+						documentupdater:
+							key_schema: 
+								blockingKey: ({doc_id}) -> "Blocking:#{doc_id}"
+								docLines: ({doc_id}) -> "doclines:#{doc_id}"
+								docOps: ({doc_id}) -> "DocOps:#{doc_id}"
+								docVersion: ({doc_id}) -> "DocVersion:#{doc_id}"
+								docHash: ({doc_id}) -> "DocHash:#{doc_id}"
+								projectKey: ({doc_id}) -> "ProjectId:#{doc_id}"
+								pendingUpdates: ({doc_id}) -> "PendingUpdates:#{doc_id}"
+								docsInProject: ({project_id}) -> "DocsIn:#{project_id}"
+								ranges: ({doc_id}) -> "Ranges:#{doc_id}"
+				}
+				"redis-sharelatex":
+					createClient: () => @rclient
 				"./Metrics": @metrics =
 					inc: sinon.stub()
 					Timer: class Timer

services/document-updater/test/unit/coffee/WebRedisManager/WebRedisManagerTests.coffee

@@ -14,6 +14,7 @@ describe "WebRedisManager", ->
 		@WebRedisManager = SandboxedModule.require modulePath, requires:
 			"redis-sharelatex": createClient: () => @rclient
 			"settings-sharelatex": redis: web: @settings = {"mock": "settings"}
+			"logger-sharelatex": { log: () -> }
 		@doc_id = "doc-id-123"
 		@project_id = "project-id-123"
 		@callback = sinon.stub()