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