overleaf/services/document-updater/app/coffee/ProjectHistoryRedisManager.coffee

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Settings = require('settings-sharelatex')
projectHistoryKeys = Settings.redis?.project_history?.key_schema
rclient = require("redis-sharelatex").createClient(Settings.redis.documentupdater)
logger = require('logger-sharelatex')
module.exports = ProjectHistoryRedisManager =
queueOps: (project_id, ops..., callback = (error, projectUpdateCount) ->) ->
multi = rclient.multi()
# Push the ops onto the project history queue
multi.rpush projectHistoryKeys.projectHistoryOps({project_id}), ops...
# To record the age of the oldest op on the queue set a timestamp if not
# already present (SETNX).
multi.setnx projectHistoryKeys.projectHistoryFirstOpTimestamp({project_id}), Date.now()
multi.exec (error, result) ->
return callback(error) if error?
# return the number of entries pushed onto the project history queue
callback null, result[0]
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queueRenameEntity: (project_id, projectHistoryId, entity_type, entity_id, user_id, projectUpdate, callback) ->
projectUpdate =
pathname: projectUpdate.pathname
new_pathname: projectUpdate.newPathname
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meta:
user_id: user_id
ts: new Date()
version: projectUpdate.version
projectHistoryId: projectHistoryId
projectUpdate[entity_type] = entity_id
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logger.log {project_id, projectUpdate}, "queue rename operation to project-history"
jsonUpdate = JSON.stringify(projectUpdate)
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ProjectHistoryRedisManager.queueOps project_id, jsonUpdate, callback
queueAddEntity: (project_id, projectHistoryId, entity_type, entitiy_id, user_id, projectUpdate, callback = (error) ->) ->
projectUpdate =
pathname: projectUpdate.pathname
docLines: projectUpdate.docLines
url: projectUpdate.url
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meta:
user_id: user_id
ts: new Date()
version: projectUpdate.version
projectHistoryId: projectHistoryId
projectUpdate[entity_type] = entitiy_id
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logger.log {project_id, projectUpdate}, "queue add operation to project-history"
jsonUpdate = JSON.stringify(projectUpdate)
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ProjectHistoryRedisManager.queueOps project_id, jsonUpdate, callback
queueResyncProjectStructure: (project_id, projectHistoryId, docs, files, callback) ->
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logger.log {project_id, docs, files}, "queue project structure resync"
projectUpdate =
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resyncProjectStructure: { docs, files }
projectHistoryId: projectHistoryId
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meta:
ts: new Date()
jsonUpdate = JSON.stringify projectUpdate
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ProjectHistoryRedisManager.queueOps project_id, jsonUpdate, callback
queueResyncDocContent: (project_id, projectHistoryId, doc_id, lines, version, pathname, callback) ->
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logger.log {project_id, doc_id, lines, version, pathname}, "queue doc content resync"
projectUpdate =
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resyncDocContent:
content: lines.join("\n"),
version: version
projectHistoryId: projectHistoryId
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path: pathname
doc: doc_id
meta:
ts: new Date()
jsonUpdate = JSON.stringify projectUpdate
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ProjectHistoryRedisManager.queueOps project_id, jsonUpdate, callback