mirror of
https://github.com/overleaf/overleaf.git
synced 2024-10-31 21:21:03 -04:00
58 lines
1.9 KiB
CoffeeScript
58 lines
1.9 KiB
CoffeeScript
Keys = require('./RedisKeyBuilder')
|
|
Settings = require('settings-sharelatex')
|
|
DocumentManager = require "./DocumentManager"
|
|
RedisManager = require "./RedisManager"
|
|
DocOpsManager = require "./DocOpsManager"
|
|
Errors = require "./Errors"
|
|
|
|
module.exports = ShareJsDB =
|
|
getOps: (doc_key, start, end, callback) ->
|
|
if start == end
|
|
return callback null, []
|
|
|
|
# In redis, lrange values are inclusive.
|
|
if end?
|
|
end--
|
|
else
|
|
end = -1
|
|
|
|
[project_id, doc_id] = Keys.splitProjectIdAndDocId(doc_key)
|
|
DocOpsManager.getPreviousDocOps project_id, doc_id, start, end, (error, ops) ->
|
|
return callback error if error?
|
|
callback null, ops
|
|
|
|
writeOp: (doc_key, opData, callback) ->
|
|
[project_id, doc_id] = Keys.splitProjectIdAndDocId(doc_key)
|
|
DocOpsManager.pushDocOp project_id, doc_id, {op:opData.op, meta:opData.meta}, (error, version) ->
|
|
return callback error if error?
|
|
|
|
if version == opData.v + 1
|
|
callback()
|
|
else
|
|
# The document has been corrupted by the change. For now, throw an exception.
|
|
# Later, rebuild the snapshot.
|
|
callback "Version mismatch in db.append. '#{doc_id}' is corrupted."
|
|
|
|
getSnapshot: (doc_key, callback) ->
|
|
[project_id, doc_id] = Keys.splitProjectIdAndDocId(doc_key)
|
|
DocumentManager.getDoc project_id, doc_id, (error, lines, version) ->
|
|
return callback(error) if error?
|
|
if !lines? or !version?
|
|
return callback(new Errors.NotFoundError("document not found: #{doc_id}"))
|
|
|
|
if lines.length > 0 and lines[0].text?
|
|
type = "json"
|
|
snapshot = lines: lines
|
|
else
|
|
type = "text"
|
|
snapshot = lines.join("\n")
|
|
callback null,
|
|
snapshot: snapshot
|
|
v: parseInt(version, 10)
|
|
type: type
|
|
|
|
# To be able to remove a doc from the ShareJS memory
|
|
# we need to called Model::delete, which calls this
|
|
# method on the database. However, we will handle removing
|
|
# it from Redis ourselves
|
|
delete: (docName, dbMeta, callback) -> callback()
|