mirror of
https://github.com/overleaf/overleaf.git
synced 2024-10-31 21:21:03 -04:00
55 lines
2.2 KiB
CoffeeScript
55 lines
2.2 KiB
CoffeeScript
Settings = require "settings-sharelatex"
|
|
redis = require("redis-sharelatex")
|
|
rclient = redis.createClient(Settings.redis.web)
|
|
|
|
rawUpdatesKey = (doc_id) -> "UncompressedHistoryOps:#{doc_id}"
|
|
docsWithHistoryOpsKey = (project_id) -> "DocsWithHistoryOps:#{project_id}"
|
|
|
|
module.exports = RedisManager =
|
|
|
|
getOldestDocUpdates: (doc_id, batchSize, callback = (error, jsonUpdates) ->) ->
|
|
key = rawUpdatesKey(doc_id)
|
|
rclient.lrange key, 0, batchSize - 1, callback
|
|
|
|
expandDocUpdates: (jsonUpdates, callback = (error, rawUpdates) ->) ->
|
|
try
|
|
rawUpdates = ( JSON.parse(update) for update in jsonUpdates or [] )
|
|
catch e
|
|
return callback(e)
|
|
callback null, rawUpdates
|
|
|
|
deleteAppliedDocUpdates: (project_id, doc_id, docUpdates, callback = (error) ->) ->
|
|
multi = rclient.multi()
|
|
# Delete all the updates which have been applied (exact match)
|
|
for update in docUpdates or []
|
|
multi.lrem rawUpdatesKey(doc_id), 0, update
|
|
# It's ok to delete the doc_id from the set here. Even though the list
|
|
# of updates may not be empty, we will continue to process it until it is.
|
|
multi.srem docsWithHistoryOpsKey(project_id), doc_id
|
|
multi.exec (error, results) ->
|
|
return callback(error) if error?
|
|
callback null
|
|
|
|
getDocIdsWithHistoryOps: (project_id, callback = (error, doc_ids) ->) ->
|
|
rclient.smembers docsWithHistoryOpsKey(project_id), callback
|
|
|
|
# extract ids from keys like DocsWithHistoryOps:57fd0b1f53a8396d22b2c24b
|
|
_extractIds: (keyList) ->
|
|
ids = (key.split(":")[1] for key in keyList)
|
|
return ids
|
|
|
|
# this will only work on single node redis, not redis cluster
|
|
getProjectIdsWithHistoryOps: (callback = (error, project_ids) ->) ->
|
|
rclient.keys docsWithHistoryOpsKey("*"), (error, project_keys) ->
|
|
return callback(error) if error?
|
|
project_ids = RedisManager._extractIds project_keys
|
|
callback(error, project_ids)
|
|
|
|
# this will only work on single node redis, not redis cluster
|
|
getAllDocIdsWithHistoryOps: (callback = (error, doc_ids) ->) ->
|
|
# return all the docids, to find dangling history entries after
|
|
# everything is flushed.
|
|
rclient.keys rawUpdatesKey("*"), (error, doc_keys) ->
|
|
return callback(error) if error?
|
|
doc_ids = RedisManager._extractIds doc_keys
|
|
callback(error, doc_ids)
|