mirror of
https://github.com/overleaf/overleaf.git
synced 2024-10-31 21:21:03 -04:00
45 lines
2.2 KiB
CoffeeScript
45 lines
2.2 KiB
CoffeeScript
settings = require "settings-sharelatex"
|
|
request = require "request"
|
|
logger = require "logger-sharelatex"
|
|
async = require "async"
|
|
HistoryRedisManager = require "./HistoryRedisManager"
|
|
|
|
module.exports = HistoryManager =
|
|
flushDocChanges: (project_id, doc_id, callback = (error) ->) ->
|
|
if !settings.apis?.trackchanges?
|
|
logger.warn doc_id: doc_id, "track changes API is not configured, so not flushing"
|
|
return callback()
|
|
|
|
url = "#{settings.apis.trackchanges.url}/project/#{project_id}/doc/#{doc_id}/flush"
|
|
logger.log project_id: project_id, doc_id: doc_id, url: url, "flushing doc in track changes api"
|
|
request.post url, (error, res, body)->
|
|
if error?
|
|
return callback(error)
|
|
else if res.statusCode >= 200 and res.statusCode < 300
|
|
return callback(null)
|
|
else
|
|
error = new Error("track changes api returned a failure status code: #{res.statusCode}")
|
|
return callback(error)
|
|
|
|
FLUSH_EVERY_N_OPS: 100
|
|
pushUncompressedHistoryOps: (project_id, doc_id, ops = [], length, callback = (error) ->) ->
|
|
if ops.length == 0
|
|
return callback()
|
|
HistoryRedisManager.recordDocHasHistoryOps project_id, doc_id, ops, (error) ->
|
|
return callback(error) if error?
|
|
return callback() if not length? # don't flush unless we know the length
|
|
# We want to flush every 100 ops, i.e. 100, 200, 300, etc
|
|
# Find out which 'block' (i.e. 0-99, 100-199) we were in before and after pushing these
|
|
# ops. If we've changed, then we've gone over a multiple of 100 and should flush.
|
|
# (Most of the time, we will only hit 100 and then flushing will put us back to 0)
|
|
previousLength = length - ops.length
|
|
prevBlock = Math.floor(previousLength / HistoryManager.FLUSH_EVERY_N_OPS)
|
|
newBlock = Math.floor(length / HistoryManager.FLUSH_EVERY_N_OPS)
|
|
if newBlock != prevBlock
|
|
# Do this in the background since it uses HTTP and so may be too
|
|
# slow to wait for when processing a doc update.
|
|
logger.log length: length, doc_id: doc_id, project_id: project_id, "flushing track changes api"
|
|
HistoryManager.flushDocChanges project_id, doc_id, (error) ->
|
|
if error?
|
|
logger.error err: error, doc_id: doc_id, project_id: project_id, "error flushing doc to track changes api"
|
|
callback()
|