overleaf/services/track-changes/app/coffee/MongoManager.coffee
2014-03-19 17:44:16 +00:00

81 lines
2.3 KiB
CoffeeScript

{db, ObjectId} = require "./mongojs"
async = require "async"
module.exports = MongoManager =
getLastCompressedUpdate: (doc_id, callback = (error, update) ->) ->
db.docHistory
.find(doc_id: ObjectId(doc_id.toString()))
.sort( v: -1 )
.limit(1)
.toArray (error, compressedUpdates) ->
return callback(error) if error?
return callback null, compressedUpdates[0] or null
deleteCompressedUpdate: (id, callback = (error) ->) ->
db.docHistory.remove({ _id: ObjectId(id.toString()) }, callback)
popLastCompressedUpdate: (doc_id, callback = (error, update) ->) ->
MongoManager.getLastCompressedUpdate doc_id, (error, update) ->
return callback(error) if error?
if update?
MongoManager.deleteCompressedUpdate update._id, (error) ->
return callback(error) if error?
callback null, update
else
callback null, null
insertCompressedUpdates: (project_id, doc_id, updates, callback = (error) ->) ->
jobs = []
for update in updates
do (update) ->
jobs.push (callback) -> MongoManager.insertCompressedUpdate project_id, doc_id, update, callback
async.series jobs, callback
insertCompressedUpdate: (project_id, doc_id, update, callback = (error) ->) ->
db.docHistory.insert {
doc_id: ObjectId(doc_id.toString())
project_id: ObjectId(project_id.toString())
op: update.op
meta: update.meta
v: update.v
}, callback
getDocUpdates:(doc_id, options = {}, callback = (error, updates) ->) ->
query =
doc_id: ObjectId(doc_id.toString())
if options.from?
query["v"] ||= {}
query["v"]["$gte"] = options.from
if options.to?
query["v"] ||= {}
query["v"]["$lte"] = options.to
cursor = db.docHistory
.find( query )
.sort( v: -1 )
if options.limit?
cursor.limit(options.limit)
cursor.toArray callback
getProjectUpdates: (project_id, options = {}, callback = (error, updates) ->) ->
query =
project_id: ObjectId(project_id.toString())
if options.before?
query["meta.end_ts"] = { $lt: options.before }
cursor = db.docHistory
.find( query )
.sort( "meta.end_ts": -1 )
if options.limit?
cursor.limit(options.limit)
cursor.toArray callback
ensureIndices: (callback = (error) ->) ->
db.docHistory.ensureIndex { doc_id: 1, v: 1 }, callback
db.docHistory.ensureIndex { project_id: 1, "meta.end_ts": 1 }, callback