mirror of
https://github.com/overleaf/overleaf.git
synced 2024-11-21 20:47:08 -05:00
Big refactor to use better names and separation of concerns
This commit is contained in:
James Allen
parent
8a0aa55c91
commit
533b8e59a3
8 changed files with 435 additions and 525 deletions
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@ -1,48 +0,0 @@
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{db, ObjectId} = require "./mongojs"
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HistoryBuilder = require "./HistoryBuilder"
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logger = require "logger-sharelatex"
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module.exports = ConversionManager =
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OPS_TO_LEAVE: 100
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popLastCompressedOp: (doc_id, callback = (error, op) ->) ->
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db.docHistory.findAndModify
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query: { doc_id: ObjectId(doc_id) }
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fields: { docOps: { $slice: -1 } }
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update: { $pop: { docOps: 1 } }
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, (error, history = { docOps: [] }) ->
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return callback(error) if error?
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callback null, history.docOps[0]
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insertCompressedOps: (doc_id, docOps, callback = (error) ->) ->
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db.docHistory.update {
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doc_id: ObjectId(doc_id)
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}, {
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$push:
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docOps:
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$each: docOps
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}, {
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upsert: true
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}, callback
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convertAndSaveRawOps: (doc_id, rawOps, callback = (error) ->) ->
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length = rawOps.length
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if length == 0
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return callback()
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ConversionManager.popLastCompressedOp doc_id, (error, lastCompressedOp) ->
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return callback(error) if error?
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if !lastCompressedOp?
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rawOps = rawOps.slice(0) # Clone so we can modify in place
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lastCompressedOp = rawOps.shift()
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uncompressedOps = [lastCompressedOp].concat rawOps
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compressedOps = HistoryBuilder.compressOps uncompressedOps
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ConversionManager.insertCompressedOps doc_id, compressedOps, (error) ->
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return callback(error) if error?
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logger.log doc_id: doc_id, rawOpsLength: length, compressedOpsLength: compressedOps.length, "compressed doc ops"
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callback()
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@ -1,150 +0,0 @@
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strInject = (s1, pos, s2) -> s1[...pos] + s2 + s1[pos..]
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strRemove = (s1, pos, length) -> s1[...pos] + s1[(pos + length)..]
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module.exports = HistoryBuilder =
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normalizeUpdate: (update) ->
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if update.meta.start_ts?
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return [update] # already normalized
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updates = []
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for op in update.op
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updates.push
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op: [op]
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meta:
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start_ts: update.meta.ts
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end_ts: update.meta.ts
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user_id: update.meta.user_id
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return updates
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compressUpdates: (rawUpdates) ->
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return [] if rawUpdates.length == 0
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normalizedUpdates = []
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for rawUpdate in rawUpdates
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normalizedUpdates = normalizedUpdates.concat HistoryBuilder.normalizeUpdate(rawUpdate)
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return [] if normalizedUpdates.length == 0
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firstPass = [normalizedUpdates.shift()]
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for update in normalizedUpdates
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lastCompressedUpdate = firstPass.pop()
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if lastCompressedUpdate?
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firstPass = firstPass.concat HistoryBuilder._concatTwoUpdates lastCompressedUpdate, update, false
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else
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firstPass.push rawUpdate
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return [] if firstPass.length == 0
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secondPass = [firstPass.shift()]
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for update in firstPass
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lastCompressedUpdate = secondPass.pop()
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if lastCompressedUpdate?
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secondPass = secondPass.concat HistoryBuilder._concatTwoUpdates lastCompressedUpdate, update, true
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else
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secondPass.push update
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return secondPass
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MAX_TIME_BETWEEN_UPDATES: oneMinute = 60 * 1000
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_concatTwoUpdates: (firstUpdate, secondUpdate, mergeInsertsAndDeletes) ->
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firstUpdate =
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op: firstUpdate.op
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meta:
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user_id: firstUpdate.meta.user_id or null
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start_ts: firstUpdate.meta.start_ts or firstUpdate.meta.ts
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end_ts: firstUpdate.meta.end_ts or firstUpdate.meta.ts
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secondUpdate =
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op: secondUpdate.op
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meta:
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user_id: secondUpdate.meta.user_id or null
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start_ts: secondUpdate.meta.start_ts or secondUpdate.meta.ts
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end_ts: secondUpdate.meta.end_ts or secondUpdate.meta.ts
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if firstUpdate.meta.user_id != secondUpdate.meta.user_id
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return [firstUpdate, secondUpdate]
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if secondUpdate.meta.start_ts - firstUpdate.meta.end_ts > HistoryBuilder.MAX_TIME_BETWEEN_UPDATES
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return [firstUpdate, secondUpdate]
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firstOp = firstUpdate.op[0]
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secondOp = secondUpdate.op[0]
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# Two inserts
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if firstOp.i? and secondOp.i? and firstOp.p <= secondOp.p <= (firstOp.p + firstOp.i.length)
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return [
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meta:
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start_ts: firstUpdate.meta.start_ts
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end_ts: secondUpdate.meta.end_ts
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user_id: firstUpdate.meta.user_id
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op: [
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p: firstOp.p
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i: strInject(firstOp.i, secondOp.p - firstOp.p, secondOp.i)
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]
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]
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# Two deletes
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else if firstOp.d? and secondOp.d? and secondOp.p <= firstOp.p <= (secondOp.p + secondOp.d.length)
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return [
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meta:
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start_ts: firstUpdate.meta.start_ts
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end_ts: secondUpdate.meta.end_ts
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user_id: firstUpdate.meta.user_id
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op: [
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p: secondOp.p
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d: strInject(secondOp.d, firstOp.p - secondOp.p, firstOp.d)
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]
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]
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# An insert and then a delete
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if mergeInsertsAndDeletes and firstOp.i? and secondOp.d? and firstOp.p <= secondOp.p <= (firstOp.p + firstOp.i.length)
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offset = secondOp.p - firstOp.p
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insertedText = firstOp.i.slice(offset, offset + secondOp.d.length)
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if insertedText == secondOp.d
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insert = strRemove(firstOp.i, offset, secondOp.d.length)
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return [] if insert == ""
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return [
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meta:
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start_ts: firstUpdate.meta.start_ts
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end_ts: secondUpdate.meta.end_ts
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user_id: firstUpdate.meta.user_id
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op: [
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p: firstOp.p
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i: insert
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]
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]
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else
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# This shouldn't be possible!
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return [firstUpdate, secondUpdate]
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else if mergeInsertsAndDeletes and firstOp.d? and secondOp.i? and firstOp.p == secondOp.p
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offset = firstOp.d.indexOf(secondOp.i)
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if offset == -1
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return [firstUpdate, secondUpdate]
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headD = firstOp.d.slice(0, offset)
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inserted = firstOp.d.slice(offset, secondOp.i.length)
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tailD = firstOp.d.slice(offset + secondOp.i.length)
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headP = firstOp.p
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tailP = firstOp.p + secondOp.i.length
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updates = []
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if headD != ""
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updates.push
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meta:
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start_ts: firstUpdate.meta.start_ts
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end_ts: secondUpdate.meta.end_ts
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user_id: firstUpdate.meta.user_id
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op: [
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p: headP
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d: headD
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]
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if tailD != ""
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updates.push
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meta:
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start_ts: firstUpdate.meta.start_ts
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end_ts: secondUpdate.meta.end_ts
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user_id: firstUpdate.meta.user_id
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op: [
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p: tailP
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d: tailD
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]
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if updates.length == 2
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updates[0].meta.start_ts = updates[0].meta.end_ts = firstUpdate.meta.start_ts
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updates[1].meta.start_ts = updates[1].meta.end_ts = secondUpdate.meta.end_ts
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return updates
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else
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return [firstUpdate, secondUpdate]
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54
services/track-changes/app/coffee/HistoryManager.coffee
Normal file
54
services/track-changes/app/coffee/HistoryManager.coffee
Normal file
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@ -0,0 +1,54 @@
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{db, ObjectId} = require "./mongojs"
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UpdateCompressor = require "./UpdateCompressor"
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logger = require "logger-sharelatex"
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module.exports = HistoryManager =
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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(timestamp: -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.delete({ _id: ObjectId(id.toString()) }, callback)
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popLastCompressedUpdate: (doc_id, callback = (error, update) ->) ->
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HistoryManager.getLastCompressedUpdate doc_id, (error, update) ->
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return callback(error) if error?
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if update?
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HistoryManager.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, docUpdates, callback = (error) ->) ->
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db.docHistory.update {
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doc_id: ObjectId(doc_id)
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}, {
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$push:
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docUpdates:
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$each: docUpdates
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}, {
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upsert: true
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}, callback
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compressAndSaveRawUpdates: (doc_id, rawUpdates, callback = (error) ->) ->
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length = rawUpdates.length
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if length == 0
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return callback()
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HistoryManager.popLastCompressedUpdate doc_id, (error, lastCompressedUpdate) ->
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return callback(error) if error?
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compressedUpdates = UpdateCompressor.compressRawUpdates lastCompressedUpdate, rawUpdates
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HistoryManager.insertCompressedUpdates doc_id, compressedUpdates, (error) ->
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return callback(error) if error?
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logger.log doc_id: doc_id, rawUpdatesLength: length, compressedUpdatesLength: compressedUpdates.length, "compressed doc updates"
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callback()
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118
services/track-changes/app/coffee/UpdateCompressor.coffee
Normal file
118
services/track-changes/app/coffee/UpdateCompressor.coffee
Normal file
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@ -0,0 +1,118 @@
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strInject = (s1, pos, s2) -> s1[...pos] + s2 + s1[pos..]
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strRemove = (s1, pos, length) -> s1[...pos] + s1[(pos + length)..]
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module.exports = UpdateCompressor =
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# Updates come from the doc updater in format
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# {
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# op: [ { ... op1 ... }, { ... op2 ... } ]
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# meta: { ts: ..., user_id: ... }
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# }
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# but it's easier to work with on op per update, so convert these updates to
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# our compressed format
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# [{
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# op: op1
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# meta: { start_ts: ... , end_ts: ..., user_id: ... }
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# }, {
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# op: op2
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# meta: { start_ts: ... , end_ts: ..., user_id: ... }
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# }]
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convertRawUpdatesToCompressedFormat: (updates) ->
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normalizedUpdates = []
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for update in updates
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for op in update.op
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normalizedUpdates.push
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op: op
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meta:
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start_ts: update.meta.start_ts or update.meta.ts
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end_ts: update.meta.end_ts or update.meta.ts
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user_id: update.meta.user_id
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return normalizedUpdates
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compressRawUpdates: (lastPreviousUpdate, rawUpdates) ->
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updates = UpdateCompressor.convertRawUpdatesToCompressedFormat(rawUpdates)
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if lastPreviousUpdate?
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updates.unshift(lastPreviousUpdate)
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return UpdateCompressor.compressUpdates(updates)
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compressUpdates: (updates) ->
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return [] if updates.length == 0
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compressedUpdates = [updates.shift()]
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for update in updates
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lastCompressedUpdate = compressedUpdates.pop()
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if lastCompressedUpdate?
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compressedUpdates = compressedUpdates.concat UpdateCompressor._concatTwoUpdates lastCompressedUpdate, update
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else
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compressedUpdates.push update
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return compressedUpdates
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MAX_TIME_BETWEEN_UPDATES: oneMinute = 60 * 1000
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_concatTwoUpdates: (firstUpdate, secondUpdate) ->
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firstUpdate =
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op: firstUpdate.op
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meta:
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user_id: firstUpdate.meta.user_id or null
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start_ts: firstUpdate.meta.start_ts or firstUpdate.meta.ts
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end_ts: firstUpdate.meta.end_ts or firstUpdate.meta.ts
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secondUpdate =
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op: secondUpdate.op
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meta:
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user_id: secondUpdate.meta.user_id or null
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start_ts: secondUpdate.meta.start_ts or secondUpdate.meta.ts
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end_ts: secondUpdate.meta.end_ts or secondUpdate.meta.ts
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if firstUpdate.meta.user_id != secondUpdate.meta.user_id
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return [firstUpdate, secondUpdate]
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if secondUpdate.meta.start_ts - firstUpdate.meta.end_ts > UpdateCompressor.MAX_TIME_BETWEEN_UPDATES
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return [firstUpdate, secondUpdate]
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firstOp = firstUpdate.op
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secondOp = secondUpdate.op
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# Two inserts
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if firstOp.i? and secondOp.i? and firstOp.p <= secondOp.p <= (firstOp.p + firstOp.i.length)
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return [
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meta:
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start_ts: firstUpdate.meta.start_ts
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end_ts: secondUpdate.meta.end_ts
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user_id: firstUpdate.meta.user_id
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op:
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p: firstOp.p
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i: strInject(firstOp.i, secondOp.p - firstOp.p, secondOp.i)
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]
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# Two deletes
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else if firstOp.d? and secondOp.d? and secondOp.p <= firstOp.p <= (secondOp.p + secondOp.d.length)
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return [
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meta:
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start_ts: firstUpdate.meta.start_ts
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end_ts: secondUpdate.meta.end_ts
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user_id: firstUpdate.meta.user_id
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op:
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p: secondOp.p
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d: strInject(secondOp.d, firstOp.p - secondOp.p, firstOp.d)
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]
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# An insert and then a delete
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else if firstOp.i? and secondOp.d? and firstOp.p <= secondOp.p <= (firstOp.p + firstOp.i.length)
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offset = secondOp.p - firstOp.p
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insertedText = firstOp.i.slice(offset, offset + secondOp.d.length)
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if insertedText == secondOp.d
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insert = strRemove(firstOp.i, offset, secondOp.d.length)
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return [] if insert == ""
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return [
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meta:
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start_ts: firstUpdate.meta.start_ts
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end_ts: secondUpdate.meta.end_ts
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user_id: firstUpdate.meta.user_id
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op:
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p: firstOp.p
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i: insert
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]
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else
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# This shouldn't be possible!
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return [firstUpdate, secondUpdate]
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else
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return [firstUpdate, secondUpdate]
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|
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@ -1,87 +0,0 @@
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sinon = require('sinon')
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chai = require('chai')
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should = chai.should()
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expect = chai.expect
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modulePath = "../../../../app/js/ConversionManager.js"
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SandboxedModule = require('sandboxed-module')
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describe "ConversionManager", ->
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beforeEach ->
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@ConversionManager = SandboxedModule.require modulePath, requires:
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"./HistoryBuilder": @HistoryBuilder = {}
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"./mongojs" : {}
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"logger-sharelatex": { log: sinon.stub() }
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@doc_id = "doc-id-123"
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@callback = sinon.stub()
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describe "when there are no raw ops", ->
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beforeEach ->
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@ConversionManager.popLastCompressedOp = sinon.stub()
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@ConversionManager.insertCompressedOps = sinon.stub()
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@ConversionManager.convertAndSaveRawOps @doc_id, [], @callback
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it "should not need to access the database", ->
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@ConversionManager.popLastCompressedOp.called.should.equal false
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@ConversionManager.insertCompressedOps.called.should.equal false
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it "should call the callback", ->
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@callback.called.should.equal true
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describe "when there is no compressed history to begin with", ->
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beforeEach ->
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@rawOps = ["mock-raw-op-1", "mock-raw-op-2"]
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@compressedOps = ["mock-compressed-op"]
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@ConversionManager.popLastCompressedOp = sinon.stub().callsArgWith(1, null, null)
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@ConversionManager.insertCompressedOps = sinon.stub().callsArg(2)
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@HistoryBuilder.compressOps = sinon.stub().returns(@compressedOps)
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@ConversionManager.convertAndSaveRawOps @doc_id, @rawOps, @callback
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it "should try to pop the last compressed op", ->
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@ConversionManager.popLastCompressedOp
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.calledWith(@doc_id)
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.should.equal true
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it "should compress the raw ops", ->
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@HistoryBuilder.compressOps
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.calledWith(@rawOps)
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.should.equal true
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it "should save the compressed ops", ->
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@ConversionManager.insertCompressedOps
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.calledWith(@doc_id, @compressedOps)
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.should.equal true
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it "should call the callback", ->
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@callback.called.should.equal true
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describe "when the raw ops need appending to existing history", ->
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beforeEach ->
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@rawOps = ["mock-raw-op-1", "mock-raw-op-2"]
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@lastCompressedOp = "mock-last-compressed-op-0"
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@compressedOps = ["mock-compressed-op-1"]
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@ConversionManager.popLastCompressedOp = sinon.stub().callsArgWith(1, null, @lastCompressedOp)
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@ConversionManager.insertCompressedOps = sinon.stub().callsArg(2)
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@HistoryBuilder.compressOps = sinon.stub().returns(@compressedOps)
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@ConversionManager.convertAndSaveRawOps @doc_id, @rawOps, @callback
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it "should try to pop the last compressed op", ->
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@ConversionManager.popLastCompressedOp
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.calledWith(@doc_id)
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||||
.should.equal true
|
||||
|
||||
it "should compress the last compressed op and the raw ops", ->
|
||||
@HistoryBuilder.compressOps
|
||||
.calledWith([@lastCompressedOp].concat(@rawOps))
|
||||
.should.equal true
|
||||
|
||||
it "should save the compressed ops", ->
|
||||
@ConversionManager.insertCompressedOps
|
||||
.calledWith(@doc_id, @compressedOps)
|
||||
.should.equal true
|
||||
|
||||
it "should call the callback", ->
|
||||
@callback.called.should.equal true
|
||||
|
||||
|
||||
|
|
@ -1,240 +0,0 @@
|
|||
sinon = require('sinon')
|
||||
chai = require('chai')
|
||||
should = chai.should()
|
||||
expect = chai.expect
|
||||
modulePath = "../../../../app/js/HistoryBuilder.js"
|
||||
SandboxedModule = require('sandboxed-module')
|
||||
|
||||
describe "HistoryBuilder", ->
|
||||
beforeEach ->
|
||||
@HistoryBuilder = SandboxedModule.require modulePath
|
||||
@user_id = "user-id-1"
|
||||
@other_user_id = "user-id-2"
|
||||
@ts1 = Date.now()
|
||||
@ts2 = Date.now() + 1000
|
||||
|
||||
describe "compress", ->
|
||||
describe "insert - insert", ->
|
||||
it "should append one insert to the other", ->
|
||||
expect(@HistoryBuilder.compressUpdates [{
|
||||
op: [ p: 3, i: "foo" ]
|
||||
meta: ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: [ p: 6, i: "bar" ]
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}])
|
||||
.to.deep.equal [{
|
||||
op: [ p: 3, i: "foobar" ]
|
||||
meta: start_ts: @ts1, end_ts: @ts2, user_id: @user_id
|
||||
}]
|
||||
|
||||
it "should insert one insert inside the other", ->
|
||||
expect(@HistoryBuilder.compressUpdates [{
|
||||
op: [ p: 3, i: "foo" ]
|
||||
meta: ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: [ p: 5, i: "bar" ]
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}])
|
||||
.to.deep.equal [{
|
||||
op: [ p: 3, i: "fobaro" ]
|
||||
meta: start_ts: @ts1, end_ts: @ts2, user_id: @user_id
|
||||
}]
|
||||
|
||||
it "should not append separated inserts", ->
|
||||
expect(@HistoryBuilder.compressUpdates [{
|
||||
op: [ p: 3, i: "foo" ]
|
||||
meta: ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: [ p: 9, i: "bar" ]
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}])
|
||||
.to.deep.equal [{
|
||||
op: [ p: 3, i: "foo" ]
|
||||
meta: start_ts: @ts1, end_ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: [ p: 9, i: "bar" ]
|
||||
meta: start_ts: @ts2, end_ts: @ts2, user_id: @user_id
|
||||
}]
|
||||
|
||||
describe "delete - delete", ->
|
||||
it "should append one delete to the other", ->
|
||||
expect(@HistoryBuilder.compressUpdates [{
|
||||
op: [ p: 3, d: "foo" ]
|
||||
meta: ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: [ p: 3, d: "bar" ]
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}])
|
||||
.to.deep.equal [{
|
||||
op: [ p: 3, d: "foobar" ]
|
||||
meta: start_ts: @ts1, end_ts: @ts2, user_id: @user_id
|
||||
}]
|
||||
|
||||
it "should insert one delete inside the other", ->
|
||||
expect(@HistoryBuilder.compressUpdates [{
|
||||
op: [ p: 3, d: "foo" ]
|
||||
meta: ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: [ p: 1, d: "bar" ]
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}])
|
||||
.to.deep.equal [{
|
||||
op: [ p: 1, d: "bafoor" ]
|
||||
meta: start_ts: @ts1, end_ts: @ts2, user_id: @user_id
|
||||
}]
|
||||
|
||||
it "should not append separated deletes", ->
|
||||
expect(@HistoryBuilder.compressUpdates [{
|
||||
op: [ p: 3, d: "foo" ]
|
||||
meta: ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: [ p: 9, d: "bar" ]
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}])
|
||||
.to.deep.equal [{
|
||||
op: [ p: 3, d: "foo" ]
|
||||
meta: start_ts: @ts1, end_ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: [ p: 9, d: "bar" ]
|
||||
meta: start_ts: @ts2, end_ts: @ts2, user_id: @user_id
|
||||
}]
|
||||
|
||||
describe "insert - delete", ->
|
||||
it "should undo a previous insert", ->
|
||||
expect(@HistoryBuilder.compressUpdates [{
|
||||
op: [ p: 3, i: "foo" ]
|
||||
meta: ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: [ p: 5, d: "o" ]
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}])
|
||||
.to.deep.equal [{
|
||||
op: [ p: 3, i: "fo" ]
|
||||
meta: start_ts: @ts1, end_ts: @ts2, user_id: @user_id
|
||||
}]
|
||||
|
||||
it "should remove part of an insert from the middle", ->
|
||||
expect(@HistoryBuilder.compressUpdates [{
|
||||
op: [ p: 3, i: "fobaro" ]
|
||||
meta: ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: [ p: 5, d: "bar" ]
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}])
|
||||
.to.deep.equal [{
|
||||
op: [ p: 3, i: "foo" ]
|
||||
meta: start_ts: @ts1, end_ts: @ts2, user_id: @user_id
|
||||
}]
|
||||
|
||||
it "should cancel out two opposite updates", ->
|
||||
expect(@HistoryBuilder.compressUpdates [{
|
||||
op: [ p: 3, i: "foo" ]
|
||||
meta: ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: [ p: 3, d: "foo" ]
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}])
|
||||
.to.deep.equal []
|
||||
|
||||
it "should not combine separated updates", ->
|
||||
expect(@HistoryBuilder.compressUpdates [{
|
||||
op: [ p: 3, i: "foo" ]
|
||||
meta: ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: [ p: 9, d: "bar" ]
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}])
|
||||
.to.deep.equal [{
|
||||
op: [ p: 3, i: "foo" ]
|
||||
meta: start_ts: @ts1, end_ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: [ p: 9, d: "bar" ]
|
||||
meta: start_ts: @ts2, end_ts: @ts2, user_id: @user_id
|
||||
}]
|
||||
|
||||
describe "delete - insert", ->
|
||||
it "should redo a previous delete at the beginning", ->
|
||||
expect(@HistoryBuilder.compressUpdates [{
|
||||
op: [ p: 3, d: "foo" ]
|
||||
meta: ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: [ p: 3, i: "f" ]
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}])
|
||||
.to.deep.equal [{
|
||||
op: [ p: 4, d: "oo" ]
|
||||
meta: start_ts: @ts1, end_ts: @ts2, user_id: @user_id
|
||||
}]
|
||||
|
||||
it "should redo a previous delete from halfway through", ->
|
||||
expect(@HistoryBuilder.compressUpdates [{
|
||||
op: [ p: 3, d: "foobar" ]
|
||||
meta: ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: [ p: 3, i: "oo" ]
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}])
|
||||
.to.deep.equal [{
|
||||
op: [ p: 3, d: "f" ]
|
||||
meta: start_ts: @ts1, end_ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: [ p: 5, d: "bar" ]
|
||||
meta: start_ts: @ts2, end_ts: @ts2, user_id: @user_id
|
||||
}]
|
||||
|
||||
it "should keep words together", ->
|
||||
expect(@HistoryBuilder.compressUpdates [{
|
||||
op: [ p: 3, d: "abcdefghijklmnopqrstuvwxyz hello world" ]
|
||||
meta: ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: [ p: 3, i: "w" ]
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}, {
|
||||
op: [ p: 4, i: "o" ]
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}, {
|
||||
op: [ p: 5, i: "r" ]
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}, {
|
||||
op: [ p: 6, i: "l" ]
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}, {
|
||||
op: [ p: 7, i: "d" ]
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}])
|
||||
.to.deep.equal [{
|
||||
op: [ p: 3, d: "abcdefghijklmnopqrstuvwxyz hello " ]
|
||||
meta: start_ts: @ts1, end_ts: @ts2, user_id: @user_id
|
||||
}]
|
||||
|
||||
|
||||
it "should not combine the ops if the insert text does not match the delete text", ->
|
||||
expect(@HistoryBuilder.compressUpdates [{
|
||||
op: [ p: 3, d: "foobar" ]
|
||||
meta: ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: [ p: 3, i: "xy" ]
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}])
|
||||
.to.deep.equal [{
|
||||
op: [ p: 3, d: "foobar" ]
|
||||
meta: start_ts: @ts1, end_ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: [ p: 3, i: "xy" ]
|
||||
meta: start_ts: @ts2, end_ts: @ts2, user_id: @user_id
|
||||
}]
|
||||
|
||||
it "should cancel two equal updates", ->
|
||||
expect(@HistoryBuilder.compressUpdates [{
|
||||
op: [ p: 3, d: "foo" ]
|
||||
meta: ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: [ p: 3, i: "foo" ]
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}])
|
||||
.to.deep.equal []
|
||||
|
||||
|
||||
|
||||
|
||||
|
|
@ -0,0 +1,87 @@
|
|||
sinon = require('sinon')
|
||||
chai = require('chai')
|
||||
should = chai.should()
|
||||
expect = chai.expect
|
||||
modulePath = "../../../../app/js/HistoryManager.js"
|
||||
SandboxedModule = require('sandboxed-module')
|
||||
|
||||
describe "HistoryManager", ->
|
||||
beforeEach ->
|
||||
@HistoryManager = SandboxedModule.require modulePath, requires:
|
||||
"./UpdateCompressor": @UpdateCompressor = {}
|
||||
"./mongojs" : {}
|
||||
"logger-sharelatex": { log: sinon.stub() }
|
||||
@doc_id = "doc-id-123"
|
||||
@callback = sinon.stub()
|
||||
|
||||
describe "when there are no raw ops", ->
|
||||
beforeEach ->
|
||||
@HistoryManager.popLastCompressedUpdate = sinon.stub()
|
||||
@HistoryManager.insertCompressedUpdates = sinon.stub()
|
||||
@HistoryManager.compressAndSaveRawUpdates @doc_id, [], @callback
|
||||
|
||||
it "should not need to access the database", ->
|
||||
@HistoryManager.popLastCompressedUpdate.called.should.equal false
|
||||
@HistoryManager.insertCompressedUpdates.called.should.equal false
|
||||
|
||||
it "should call the callback", ->
|
||||
@callback.called.should.equal true
|
||||
|
||||
describe "when there is no compressed history to begin with", ->
|
||||
beforeEach ->
|
||||
@rawUpdates = ["mock-raw-op-1", "mock-raw-op-2"]
|
||||
@compressedUpdates = ["mock-compressed-op"]
|
||||
|
||||
@HistoryManager.popLastCompressedUpdate = sinon.stub().callsArgWith(1, null, null)
|
||||
@HistoryManager.insertCompressedUpdates = sinon.stub().callsArg(2)
|
||||
@UpdateCompressor.compressRawUpdates = sinon.stub().returns(@compressedUpdates)
|
||||
@HistoryManager.compressAndSaveRawUpdates @doc_id, @rawUpdates, @callback
|
||||
|
||||
it "should try to pop the last compressed op", ->
|
||||
@HistoryManager.popLastCompressedUpdate
|
||||
.calledWith(@doc_id)
|
||||
.should.equal true
|
||||
|
||||
it "should compress the raw ops", ->
|
||||
@UpdateCompressor.compressRawUpdates
|
||||
.calledWith(null, @rawUpdates)
|
||||
.should.equal true
|
||||
|
||||
it "should save the compressed ops", ->
|
||||
@HistoryManager.insertCompressedUpdates
|
||||
.calledWith(@doc_id, @compressedUpdates)
|
||||
.should.equal true
|
||||
|
||||
it "should call the callback", ->
|
||||
@callback.called.should.equal true
|
||||
|
||||
describe "when the raw ops need appending to existing history", ->
|
||||
beforeEach ->
|
||||
@rawUpdates = ["mock-raw-op-1", "mock-raw-op-2"]
|
||||
@lastCompressedUpdate = "mock-last-compressed-op-0"
|
||||
@compressedUpdates = ["mock-compressed-op-1"]
|
||||
|
||||
@HistoryManager.popLastCompressedUpdate = sinon.stub().callsArgWith(1, null, @lastCompressedUpdate)
|
||||
@HistoryManager.insertCompressedUpdates = sinon.stub().callsArg(2)
|
||||
@UpdateCompressor.compressRawUpdates = sinon.stub().returns(@compressedUpdates)
|
||||
@HistoryManager.compressAndSaveRawUpdates @doc_id, @rawUpdates, @callback
|
||||
|
||||
it "should try to pop the last compressed op", ->
|
||||
@HistoryManager.popLastCompressedUpdate
|
||||
.calledWith(@doc_id)
|
||||
.should.equal true
|
||||
|
||||
it "should compress the last compressed op and the raw ops", ->
|
||||
@UpdateCompressor.compressRawUpdates
|
||||
.calledWith(@lastCompressedUpdate, @rawUpdates)
|
||||
.should.equal true
|
||||
|
||||
it "should save the compressed ops", ->
|
||||
@HistoryManager.insertCompressedUpdates
|
||||
.calledWith(@doc_id, @compressedUpdates)
|
||||
.should.equal true
|
||||
|
||||
it "should call the callback", ->
|
||||
@callback.called.should.equal true
|
||||
|
||||
|
||||
|
|
@ -0,0 +1,176 @@
|
|||
sinon = require('sinon')
|
||||
chai = require('chai')
|
||||
should = chai.should()
|
||||
expect = chai.expect
|
||||
modulePath = "../../../../app/js/UpdateCompressor.js"
|
||||
SandboxedModule = require('sandboxed-module')
|
||||
|
||||
describe "UpdateCompressor", ->
|
||||
beforeEach ->
|
||||
@UpdateCompressor = SandboxedModule.require modulePath
|
||||
@user_id = "user-id-1"
|
||||
@other_user_id = "user-id-2"
|
||||
@ts1 = Date.now()
|
||||
@ts2 = Date.now() + 1000
|
||||
|
||||
describe "convertRawUpdatesToCompressedFormat", ->
|
||||
it "should split grouped updates into individual updates", ->
|
||||
expect(@UpdateCompressor.convertRawUpdatesToCompressedFormat [{
|
||||
op: [ @op1 = { p: 0, i: "Foo" }, @op2 = { p: 6, i: "bar"} ]
|
||||
meta: { ts: @ts1, user_id: @user_id }
|
||||
}, {
|
||||
op: [ @op3 = { p: 10, i: "baz" } ]
|
||||
meta: { ts: @ts2, user_id: @other_user_id }
|
||||
}])
|
||||
.to.deep.equal [{
|
||||
op: @op1,
|
||||
meta: { start_ts: @ts1, end_ts: @ts1, user_id: @user_id }
|
||||
}, {
|
||||
op: @op2,
|
||||
meta: { start_ts: @ts1, end_ts: @ts1, user_id: @user_id }
|
||||
}, {
|
||||
op: @op3,
|
||||
meta: { start_ts: @ts2, end_ts: @ts2, user_id: @other_user_id }
|
||||
}]
|
||||
|
||||
describe "compress", ->
|
||||
describe "insert - insert", ->
|
||||
it "should append one insert to the other", ->
|
||||
expect(@UpdateCompressor.compressUpdates [{
|
||||
op: { p: 3, i: "foo" }
|
||||
meta: ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: { p: 6, i: "bar" }
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}])
|
||||
.to.deep.equal [{
|
||||
op: { p: 3, i: "foobar" }
|
||||
meta: start_ts: @ts1, end_ts: @ts2, user_id: @user_id
|
||||
}]
|
||||
|
||||
it "should insert one insert inside the other", ->
|
||||
expect(@UpdateCompressor.compressUpdates [{
|
||||
op: { p: 3, i: "foo" }
|
||||
meta: ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: { p: 5, i: "bar" }
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}])
|
||||
.to.deep.equal [{
|
||||
op: { p: 3, i: "fobaro" }
|
||||
meta: start_ts: @ts1, end_ts: @ts2, user_id: @user_id
|
||||
}]
|
||||
|
||||
it "should not append separated inserts", ->
|
||||
expect(@UpdateCompressor.compressUpdates [{
|
||||
op: { p: 3, i: "foo" }
|
||||
meta: ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: { p: 9, i: "bar" }
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}])
|
||||
.to.deep.equal [{
|
||||
op: { p: 3, i: "foo" }
|
||||
meta: start_ts: @ts1, end_ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: { p: 9, i: "bar" }
|
||||
meta: start_ts: @ts2, end_ts: @ts2, user_id: @user_id
|
||||
}]
|
||||
|
||||
describe "delete - delete", ->
|
||||
it "should append one delete to the other", ->
|
||||
expect(@UpdateCompressor.compressUpdates [{
|
||||
op: { p: 3, d: "foo" }
|
||||
meta: ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: { p: 3, d: "bar" }
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}])
|
||||
.to.deep.equal [{
|
||||
op: { p: 3, d: "foobar" }
|
||||
meta: start_ts: @ts1, end_ts: @ts2, user_id: @user_id
|
||||
}]
|
||||
|
||||
it "should insert one delete inside the other", ->
|
||||
expect(@UpdateCompressor.compressUpdates [{
|
||||
op: { p: 3, d: "foo" }
|
||||
meta: ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: { p: 1, d: "bar" }
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}])
|
||||
.to.deep.equal [{
|
||||
op: { p: 1, d: "bafoor" }
|
||||
meta: start_ts: @ts1, end_ts: @ts2, user_id: @user_id
|
||||
}]
|
||||
|
||||
it "should not append separated deletes", ->
|
||||
expect(@UpdateCompressor.compressUpdates [{
|
||||
op: { p: 3, d: "foo" }
|
||||
meta: ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: { p: 9, d: "bar" }
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}])
|
||||
.to.deep.equal [{
|
||||
op: { p: 3, d: "foo" }
|
||||
meta: start_ts: @ts1, end_ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: { p: 9, d: "bar" }
|
||||
meta: start_ts: @ts2, end_ts: @ts2, user_id: @user_id
|
||||
}]
|
||||
|
||||
describe "insert - delete", ->
|
||||
it "should undo a previous insert", ->
|
||||
expect(@UpdateCompressor.compressUpdates [{
|
||||
op: { p: 3, i: "foo" }
|
||||
meta: ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: { p: 5, d: "o" }
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}])
|
||||
.to.deep.equal [{
|
||||
op: { p: 3, i: "fo" }
|
||||
meta: start_ts: @ts1, end_ts: @ts2, user_id: @user_id
|
||||
}]
|
||||
|
||||
it "should remove part of an insert from the middle", ->
|
||||
expect(@UpdateCompressor.compressUpdates [{
|
||||
op: { p: 3, i: "fobaro" }
|
||||
meta: ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: { p: 5, d: "bar" }
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}])
|
||||
.to.deep.equal [{
|
||||
op: { p: 3, i: "foo" }
|
||||
meta: start_ts: @ts1, end_ts: @ts2, user_id: @user_id
|
||||
}]
|
||||
|
||||
it "should cancel out two opposite updates", ->
|
||||
expect(@UpdateCompressor.compressUpdates [{
|
||||
op: { p: 3, i: "foo" }
|
||||
meta: ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: { p: 3, d: "foo" }
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}])
|
||||
.to.deep.equal []
|
||||
|
||||
it "should not combine separated updates", ->
|
||||
expect(@UpdateCompressor.compressUpdates [{
|
||||
op: { p: 3, i: "foo" }
|
||||
meta: ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: { p: 9, d: "bar" }
|
||||
meta: ts: @ts2, user_id: @user_id
|
||||
}])
|
||||
.to.deep.equal [{
|
||||
op: { p: 3, i: "foo" }
|
||||
meta: start_ts: @ts1, end_ts: @ts1, user_id: @user_id
|
||||
}, {
|
||||
op: { p: 9, d: "bar" }
|
||||
meta: start_ts: @ts2, end_ts: @ts2, user_id: @user_id
|
||||
}]
|
||||
|
||||
|
||||
Loading…
Reference in a new issue