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