Settings = require('settings-sharelatex') redis = require("redis-sharelatex") rclient = redis.createClient(Settings.redis.web) async = require('async') _ = require('underscore') keys = require('./RedisKeyBuilder') logger = require('logger-sharelatex') metrics = require('./Metrics') ZipManager = require('./ZipManager') redisOptions = _.clone(Settings.redis.web) redisOptions.return_buffers = true rclientBuffer = redis.createClient(redisOptions) # Make times easy to read minutes = 60 # seconds for Redis expire module.exports = RedisManager = putDocInMemory : (project_id, doc_id, docLines, version, callback)-> timer = new metrics.Timer("redis.put-doc") logger.log project_id:project_id, doc_id:doc_id, version: version, "putting doc in redis" multi = rclient.multi() multi.set keys.docLines(doc_id:doc_id), JSON.stringify(docLines) multi.set keys.projectKey({doc_id:doc_id}), project_id multi.set keys.docVersion(doc_id:doc_id), version multi.sadd keys.allDocs, doc_id multi.sadd keys.docsInProject(project_id:project_id), doc_id multi.exec (err, replys)-> timer.done() callback(err) removeDocFromMemory : (project_id, doc_id, callback)-> logger.log project_id:project_id, doc_id:doc_id, "removing doc from redis" multi = rclient.multi() multi.del keys.docLines(doc_id:doc_id) multi.del keys.projectKey(doc_id:doc_id) multi.del keys.docVersion(doc_id:doc_id) multi.srem keys.docsInProject(project_id:project_id), doc_id multi.srem keys.allDocs, doc_id multi.exec (err, replys)-> if err? logger.err project_id:project_id, doc_id:doc_id, err:err, "error removing doc from redis" callback(err, null) else logger.log project_id:project_id, doc_id:doc_id, "removed doc from redis" callback() getDoc : (doc_id, callback = (error, lines, version) ->)-> timer = new metrics.Timer("redis.get-doc") # use Buffer when retrieving data as it may be gzipped multi = rclientBuffer.multi() linesKey = keys.docLines(doc_id:doc_id) multi.get linesKey multi.get keys.docVersion(doc_id:doc_id) multi.exec (error, result)-> timer.done() return callback(error) if error? ZipManager.uncompressIfNeeded doc_id, result, (error, result) -> try docLines = JSON.parse result[0] catch e return callback(e) version = parseInt(result[1] or 0, 10) callback null, docLines, version getDocVersion: (doc_id, callback = (error, version) ->) -> rclient.get keys.docVersion(doc_id: doc_id), (error, version) -> return callback(error) if error? version = parseInt(version, 10) callback null, version getCountOfDocsInMemory : (callback)-> rclient.smembers keys.allDocs, (err, members)-> len = members.length callback null, len setDocument : (doc_id, docLines, version, callback = (error) ->)-> ZipManager.compressIfNeeded doc_id, JSON.stringify(docLines), (err, result) -> multi = rclient.multi() multi.set keys.docLines(doc_id:doc_id), result multi.set keys.docVersion(doc_id:doc_id), version multi.incr keys.now("docsets") multi.exec (error, replys) -> callback(error) getPendingUpdatesForDoc : (doc_id, callback)-> multi = rclient.multi() multi.lrange keys.pendingUpdates(doc_id:doc_id), 0 , -1 multi.del keys.pendingUpdates(doc_id:doc_id) multi.exec (error, replys) -> return callback(error) if error? jsonUpdates = replys[0] updates = [] for jsonUpdate in jsonUpdates try update = JSON.parse jsonUpdate catch e return callback e updates.push update callback error, updates getUpdatesLength: (doc_id, callback)-> rclient.llen keys.pendingUpdates(doc_id:doc_id), callback getDocsWithPendingUpdates: (callback = (error, docs) ->) -> rclient.smembers keys.docsWithPendingUpdates, (error, doc_keys) -> return callback(error) if error? docs = doc_keys.map (doc_key) -> [project_id, doc_id] = keys.splitProjectIdAndDocId(doc_key) return { doc_id: doc_id project_id: project_id } callback null, docs clearDocFromPendingUpdatesSet: (project_id, doc_id, callback = (error) ->) -> doc_key = keys.combineProjectIdAndDocId(project_id, doc_id) rclient.srem keys.docsWithPendingUpdates, doc_key, callback getPreviousDocOps: (doc_id, start, end, callback = (error, jsonOps) ->) -> rclient.llen keys.docOps(doc_id: doc_id), (error, length) -> return callback(error) if error? rclient.get keys.docVersion(doc_id: doc_id), (error, version) -> return callback(error) if error? version = parseInt(version, 10) first_version_in_redis = version - length if start < first_version_in_redis or end > version error = new Error("doc ops range is not loaded in redis") logger.error err: error, length: length, version: version, start: start, end: end, "inconsistent version or length" return callback(error) start = start - first_version_in_redis if end > -1 end = end - first_version_in_redis if isNaN(start) or isNaN(end) error = new Error("inconsistent version or lengths") logger.error err: error, length: length, version: version, start: start, end: end, "inconsistent version or length" return callback(error) rclient.lrange keys.docOps(doc_id: doc_id), start, end, (error, jsonOps) -> return callback(error) if error? try ops = jsonOps.map (jsonOp) -> JSON.parse jsonOp catch e return callback(e) callback null, ops DOC_OPS_TTL: 60 * minutes DOC_OPS_MAX_LENGTH: 100 pushDocOp: (doc_id, op, callback = (error, new_version) ->) -> jsonOp = JSON.stringify op multi = rclient.multi() multi.rpush keys.docOps(doc_id: doc_id), jsonOp multi.expire keys.docOps(doc_id: doc_id), RedisManager.DOC_OPS_TTL multi.ltrim keys.docOps(doc_id: doc_id), -RedisManager.DOC_OPS_MAX_LENGTH, -1 multi.incr keys.docVersion(doc_id: doc_id) multi.exec (error, replys) -> [_, __, ___, version] = replys return callback(error) if error? version = parseInt(version, 10) callback null, version pushUncompressedHistoryOp: (project_id, doc_id, op, callback = (error, length) ->) -> jsonOp = JSON.stringify op multi = rclient.multi() multi.rpush keys.uncompressedHistoryOp(doc_id: doc_id), jsonOp multi.sadd keys.docsWithHistoryOps(project_id: project_id), doc_id multi.exec (error, results) -> return callback(error) if error? [length, _] = results callback(error, length) getDocOpsLength: (doc_id, callback = (error, length) ->) -> rclient.llen keys.docOps(doc_id: doc_id), callback getDocIdsInProject: (project_id, callback = (error, doc_ids) ->) -> rclient.smembers keys.docsInProject(project_id: project_id), callback