mirror of
https://github.com/overleaf/overleaf.git
synced 2024-11-07 20:31:06 -05:00
341 lines
10 KiB
CoffeeScript
341 lines
10 KiB
CoffeeScript
Settings = require "settings-sharelatex"
|
|
fs = require("fs")
|
|
mongojs = require("mongojs")
|
|
ObjectId = mongojs.ObjectId
|
|
db = mongojs(Settings.mongo.url, ['docs','docHistory', 'docHistoryStats'])
|
|
_ = require("underscore")
|
|
async = require("async")
|
|
exec = require("child_process").exec
|
|
BSON = db.bson.BSON
|
|
|
|
logger = {
|
|
log: ->
|
|
err: ->
|
|
}
|
|
|
|
needToExit = false
|
|
handleExit = () ->
|
|
needToExit = true
|
|
console.log('Got signal. Shutting down.')
|
|
|
|
process.on 'SIGINT', handleExit
|
|
process.on 'SIGHUP', handleExit
|
|
|
|
finished_docs_path = "/tmp/finished-docs-3"
|
|
all_docs_path = "/tmp/all-docs-3"
|
|
unmigrated_docs_path = "/tmp/unmigrated-docs-3"
|
|
|
|
finished_docs = {}
|
|
if fs.existsSync(finished_docs_path)
|
|
for id in fs.readFileSync(finished_docs_path,'utf-8').split("\n")
|
|
finished_docs[id] = true
|
|
|
|
getAndWriteDocids = (callback)->
|
|
console.log "finding all doc id's - #{new Date().toString()}"
|
|
db.docs.find {}, {_id:1}, (err, ids)->
|
|
console.log "total found docs in mongo #{ids.length} - #{new Date().toString()}"
|
|
ids = _.pluck ids, '_id'
|
|
ids = _.filter ids, (id)-> id?
|
|
fileData = ids.join("\n")
|
|
fs.writeFileSync all_docs_path + ".tmp", fileData
|
|
fs.renameSync all_docs_path + ".tmp", all_docs_path
|
|
callback(err, ids)
|
|
|
|
loadDocIds = (callback)->
|
|
console.log "loading doc ids from #{all_docs_path}"
|
|
data = fs.readFileSync all_docs_path, "utf-8"
|
|
ids = data.split("\n")
|
|
console.log "loaded #{ids.length} doc ids from #{all_docs_path}"
|
|
callback null, ids
|
|
|
|
getDocIds = (callback)->
|
|
exists = fs.existsSync all_docs_path
|
|
if exists
|
|
loadDocIds callback
|
|
else
|
|
getAndWriteDocids callback
|
|
|
|
markDocAsProcessed = (doc_id, callback)->
|
|
finished_docs[doc_id] = true
|
|
fs.appendFile finished_docs_path, "#{doc_id}\n", callback
|
|
|
|
markDocAsUnmigrated = (doc_id, callback)->
|
|
console.log "#{doc_id} unmigrated"
|
|
markDocAsProcessed doc_id, (err)->
|
|
fs.appendFile unmigrated_docs_path, "#{doc_id}\n", callback
|
|
|
|
checkIfDocHasBeenProccessed = (doc_id, callback)->
|
|
callback(null, finished_docs[doc_id])
|
|
|
|
processNext = (doc_id, callback)->
|
|
if !doc_id? or doc_id.length == 0
|
|
return callback()
|
|
if needToExit
|
|
return callback(new Error("graceful shutdown"))
|
|
checkIfDocHasBeenProccessed doc_id, (err, hasBeenProcessed)->
|
|
if hasBeenProcessed
|
|
console.log "#{doc_id} already processed, skipping"
|
|
return callback()
|
|
PackManager._packDocHistory doc_id, {}, (err) ->
|
|
if err?
|
|
console.log "error processing #{doc_id}"
|
|
markDocAsUnmigrated doc_id, callback
|
|
else
|
|
markDocAsProcessed doc_id, callback
|
|
|
|
updateIndexes = (callback) ->
|
|
async.series [
|
|
(cb) ->
|
|
console.log "create index"
|
|
db.docHistory.ensureIndex { project_id: 1, "meta.end_ts": 1, "meta.start_ts": -1 }, { background: true }, cb
|
|
(cb) ->
|
|
console.log "drop index"
|
|
db.docHistory.dropIndex { project_id: 1, "meta.end_ts": 1 }, cb
|
|
(cb) ->
|
|
console.log "drop index"
|
|
db.docHistory.dropIndex { project_id: 1, "pack.0.meta.end_ts": 1, "meta.end_ts": 1}, cb
|
|
], (err, results) ->
|
|
console.log "all done"
|
|
callback(err)
|
|
|
|
exports.migrate = (client, done = ->)->
|
|
getDocIds (err, ids)->
|
|
totalDocCount = ids.length
|
|
alreadyFinishedCount = Object.keys(finished_docs).length
|
|
t0 = Date.now()
|
|
printProgress = () ->
|
|
count = Object.keys(finished_docs).length
|
|
processedFraction = (count-alreadyFinishedCount)/totalDocCount
|
|
remainingFraction = (totalDocCount-count)/totalDocCount
|
|
t = Date.now()
|
|
dt = (t-t0)*remainingFraction/processedFraction
|
|
estFinishTime = new Date(t + dt)
|
|
console.log "completed #{count}/#{totalDocCount} processed=#{processedFraction.toFixed(2)} remaining=#{remainingFraction.toFixed(2)} elapsed=#{(t-t0)/1000} est Finish=#{estFinishTime}"
|
|
interval = setInterval printProgress, 3*1000
|
|
|
|
nextId = null
|
|
|
|
testFn = () ->
|
|
return false if needToExit
|
|
id = ids.shift()
|
|
while id? and finished_docs[id] # skip finished
|
|
id = ids.shift()
|
|
nextId = id
|
|
return nextId?
|
|
|
|
executeFn = (cb) ->
|
|
processNext nextId, cb
|
|
|
|
async.whilst testFn, executeFn, (err)->
|
|
if err?
|
|
console.error err, "at end of jobs"
|
|
else
|
|
console.log "finished at #{new Date}"
|
|
clearInterval interval
|
|
done(err)
|
|
|
|
exports.rollback = (client, done)->
|
|
done()
|
|
|
|
# process.nextTick () ->
|
|
# exports.migrate () ->
|
|
# console.log "done"
|
|
|
|
DAYS = 24 * 3600 * 1000 # one day in milliseconds
|
|
|
|
# copied from track-changes/app/coffee/PackManager.coffee
|
|
|
|
PackManager =
|
|
MAX_SIZE: 1024*1024 # make these configurable parameters
|
|
MAX_COUNT: 512
|
|
|
|
convertDocsToPacks: (docs, callback) ->
|
|
packs = []
|
|
top = null
|
|
docs.forEach (d,i) ->
|
|
# skip existing packs
|
|
if d.pack?
|
|
top = null
|
|
return
|
|
sz = BSON.calculateObjectSize(d)
|
|
# decide if this doc can be added to the current pack
|
|
validLength = top? && (top.pack.length < PackManager.MAX_COUNT)
|
|
validSize = top? && (top.sz + sz < PackManager.MAX_SIZE)
|
|
bothPermanent = top? && (top.expiresAt? is false) && (d.expiresAt? is false)
|
|
bothTemporary = top? && (top.expiresAt? is true) && (d.expiresAt? is true)
|
|
within1Day = bothTemporary && (d.meta.start_ts - top.meta.start_ts < 24 * 3600 * 1000)
|
|
if top? && validLength && validSize && (bothPermanent || (bothTemporary && within1Day))
|
|
top.pack = top.pack.concat {v: d.v, meta: d.meta, op: d.op, _id: d._id}
|
|
top.sz += sz
|
|
top.n += 1
|
|
top.v_end = d.v
|
|
top.meta.end_ts = d.meta.end_ts
|
|
top.expiresAt = d.expiresAt if top.expiresAt?
|
|
return
|
|
else
|
|
# create a new pack
|
|
top = _.clone(d)
|
|
top.pack = [ {v: d.v, meta: d.meta, op: d.op, _id: d._id} ]
|
|
top.meta = { start_ts: d.meta.start_ts, end_ts: d.meta.end_ts }
|
|
top.sz = sz
|
|
top.n = 1
|
|
top.v_end = d.v
|
|
delete top.op
|
|
delete top._id
|
|
packs.push top
|
|
|
|
callback(null, packs)
|
|
|
|
checkHistory: (docs, callback) ->
|
|
errors = []
|
|
prev = null
|
|
error = (args...) ->
|
|
errors.push args
|
|
docs.forEach (d,i) ->
|
|
if d.pack?
|
|
n = d.pack.length
|
|
last = d.pack[n-1]
|
|
error('bad pack v_end', d) if d.v_end != last.v
|
|
error('bad pack start_ts', d) if d.meta.start_ts != d.pack[0].meta.start_ts
|
|
error('bad pack end_ts', d) if d.meta.end_ts != last.meta.end_ts
|
|
d.pack.forEach (p, i) ->
|
|
prev = v
|
|
v = p.v
|
|
error('bad version', v, 'in', p) if v <= prev
|
|
#error('expired op', p, 'in pack') if p.expiresAt?
|
|
else
|
|
prev = v
|
|
v = d.v
|
|
error('bad version', v, 'in', d) if v <= prev
|
|
if errors.length
|
|
callback(errors)
|
|
else
|
|
callback()
|
|
|
|
insertPack: (packObj, callback) ->
|
|
bulk = db.docHistory.initializeOrderedBulkOp()
|
|
doc_id = packObj.doc_id
|
|
expect_nInserted = 1
|
|
expect_nRemoved = packObj.pack.length
|
|
logger.log {doc_id: doc_id}, "adding pack, removing #{expect_nRemoved} ops"
|
|
bulk.insert packObj
|
|
ids = (op._id for op in packObj.pack)
|
|
bulk.find({_id:{$in:ids}}).remove()
|
|
bulk.execute (err, result) ->
|
|
if err?
|
|
logger.error {doc_id: doc_id}, "error adding pack"
|
|
callback(err, result)
|
|
else if result.nInserted != expect_nInserted or result.nRemoved != expect_nRemoved
|
|
logger.error {doc_id: doc_id, result}, "unexpected result adding pack"
|
|
callback(new Error(
|
|
msg: 'unexpected result'
|
|
expected: {expect_nInserted, expect_nRemoved}
|
|
), result)
|
|
else
|
|
db.docHistoryStats.update {doc_id:doc_id}, {
|
|
$inc:{update_count:-expect_nRemoved},
|
|
$currentDate:{last_packed:true}
|
|
}, {upsert:true}, () ->
|
|
callback(err, result)
|
|
|
|
# retrieve document ops/packs and check them
|
|
getDocHistory: (doc_id, callback) ->
|
|
db.docHistory.find({doc_id:ObjectId(doc_id)}).sort {v:1}, (err, docs) ->
|
|
return callback(err) if err?
|
|
# for safety, do a consistency check of the history
|
|
logger.log {doc_id}, "checking history for document"
|
|
PackManager.checkHistory docs, (err) ->
|
|
return callback(err) if err?
|
|
callback(err, docs)
|
|
#PackManager.deleteExpiredPackOps docs, (err) ->
|
|
# return callback(err) if err?
|
|
# callback err, docs
|
|
|
|
packDocHistory: (doc_id, options, callback) ->
|
|
if typeof callback == "undefined" and typeof options == 'function'
|
|
callback = options
|
|
options = {}
|
|
LockManager.runWithLock(
|
|
"HistoryLock:#{doc_id}",
|
|
(releaseLock) ->
|
|
PackManager._packDocHistory(doc_id, options, releaseLock)
|
|
, callback
|
|
)
|
|
|
|
_packDocHistory: (doc_id, options, callback) ->
|
|
logger.log {doc_id},"starting pack operation for document history"
|
|
|
|
PackManager.getDocHistory doc_id, (err, docs) ->
|
|
return callback(err) if err?
|
|
origDocs = 0
|
|
origPacks = 0
|
|
for d in docs
|
|
if d.pack? then origPacks++ else origDocs++
|
|
PackManager.convertDocsToPacks docs, (err, packs) ->
|
|
return callback(err) if err?
|
|
total = 0
|
|
for p in packs
|
|
total = total + p.pack.length
|
|
logger.log {doc_id, origDocs, origPacks, newPacks: packs.length, totalOps: total}, "document stats"
|
|
if packs.length
|
|
if options['dry-run']
|
|
logger.log {doc_id}, 'dry-run, skipping write packs'
|
|
return callback()
|
|
PackManager.savePacks packs, (err) ->
|
|
return callback(err) if err?
|
|
# check the history again
|
|
PackManager.getDocHistory doc_id, callback
|
|
else
|
|
logger.log {doc_id}, "no packs to write"
|
|
# keep a record that we checked this one to avoid rechecking it
|
|
db.docHistoryStats.update {doc_id:doc_id}, {
|
|
$currentDate:{last_checked:true}
|
|
}, {upsert:true}, () ->
|
|
callback null, null
|
|
|
|
DB_WRITE_DELAY: 100
|
|
|
|
savePacks: (packs, callback) ->
|
|
async.eachSeries packs, PackManager.safeInsert, (err, result) ->
|
|
if err?
|
|
logger.log {err, result}, "error writing packs"
|
|
callback err, result
|
|
else
|
|
callback()
|
|
|
|
safeInsert: (packObj, callback) ->
|
|
PackManager.insertPack packObj, (err, result) ->
|
|
setTimeout () ->
|
|
callback(err,result)
|
|
, PackManager.DB_WRITE_DELAY
|
|
|
|
deleteExpiredPackOps: (docs, callback) ->
|
|
now = Date.now()
|
|
toRemove = []
|
|
toUpdate = []
|
|
docs.forEach (d,i) ->
|
|
if d.pack?
|
|
newPack = d.pack.filter (op) ->
|
|
if op.expiresAt? then op.expiresAt > now else true
|
|
if newPack.length == 0
|
|
toRemove.push d
|
|
else if newPack.length < d.pack.length
|
|
# adjust the pack properties
|
|
d.pack = newPack
|
|
first = d.pack[0]
|
|
last = d.pack[d.pack.length - 1]
|
|
d.v_end = last.v
|
|
d.meta.start_ts = first.meta.start_ts
|
|
d.meta.end_ts = last.meta.end_ts
|
|
toUpdate.push d
|
|
if toRemove.length or toUpdate.length
|
|
bulk = db.docHistory.initializeOrderedBulkOp()
|
|
toRemove.forEach (pack) ->
|
|
console.log "would remove", pack
|
|
#bulk.find({_id:pack._id}).removeOne()
|
|
toUpdate.forEach (pack) ->
|
|
console.log "would update", pack
|
|
#bulk.find({_id:pack._id}).updateOne(pack);
|
|
bulk.execute callback
|
|
else
|
|
callback()
|