overleaf/services/document-updater/app/js/HttpController.js

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JavaScript
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const DocumentManager = require('./DocumentManager')
const HistoryManager = require('./HistoryManager')
const ProjectManager = require('./ProjectManager')
const RedisManager = require('./RedisManager')
const Errors = require('./Errors')
const logger = require('@overleaf/logger')
const Settings = require('@overleaf/settings')
const Metrics = require('./Metrics')
const ProjectFlusher = require('./ProjectFlusher')
const DeleteQueueManager = require('./DeleteQueueManager')
const { getTotalSizeOfLines } = require('./Limits')
const async = require('async')
module.exports = {
getDoc,
peekDoc,
getProjectDocsAndFlushIfOld,
clearProjectState,
setDoc,
flushDocIfLoaded,
deleteDoc,
flushProject,
deleteProject,
deleteMultipleProjects,
acceptChanges,
deleteComment,
updateProject,
resyncProjectHistory,
flushAllProjects,
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flushQueuedProjects,
}
function getDoc(req, res, next) {
let fromVersion
const docId = req.params.doc_id
const projectId = req.params.project_id
logger.debug({ projectId, docId }, 'getting doc via http')
const timer = new Metrics.Timer('http.getDoc')
if (req.query.fromVersion != null) {
fromVersion = parseInt(req.query.fromVersion, 10)
} else {
fromVersion = -1
}
DocumentManager.getDocAndRecentOpsWithLock(
projectId,
docId,
fromVersion,
(error, lines, version, ops, ranges, pathname) => {
timer.done()
if (error) {
return next(error)
}
logger.debug({ projectId, docId }, 'got doc via http')
if (lines == null || version == null) {
return next(new Errors.NotFoundError('document not found'))
}
res.json({
id: docId,
lines,
version,
ops,
ranges,
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pathname,
})
}
)
}
// return the doc from redis if present, but don't load it from mongo
function peekDoc(req, res, next) {
const docId = req.params.doc_id
const projectId = req.params.project_id
logger.debug({ projectId, docId }, 'peeking at doc via http')
RedisManager.getDoc(projectId, docId, function (error, lines, version) {
if (error) {
return next(error)
}
if (lines == null || version == null) {
return next(new Errors.NotFoundError('document not found'))
}
res.json({ id: docId, lines, version })
})
}
function getProjectDocsAndFlushIfOld(req, res, next) {
const projectId = req.params.project_id
const projectStateHash = req.query.state
// exclude is string of existing docs "id:version,id:version,..."
const excludeItems =
req.query.exclude != null ? req.query.exclude.split(',') : []
logger.debug({ projectId, exclude: excludeItems }, 'getting docs via http')
const timer = new Metrics.Timer('http.getAllDocs')
const excludeVersions = {}
for (const item of excludeItems) {
const [id, version] = item.split(':')
excludeVersions[id] = version
}
logger.debug(
{ projectId, projectStateHash, excludeVersions },
'excluding versions'
)
ProjectManager.getProjectDocsAndFlushIfOld(
projectId,
projectStateHash,
excludeVersions,
(error, result) => {
timer.done()
if (error instanceof Errors.ProjectStateChangedError) {
res.sendStatus(409) // conflict
} else if (error) {
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next(error)
} else {
logger.debug(
{
projectId,
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result: result.map(doc => `${doc._id}:${doc.v}`),
},
'got docs via http'
)
res.send(result)
}
}
)
}
function clearProjectState(req, res, next) {
const projectId = req.params.project_id
const timer = new Metrics.Timer('http.clearProjectState')
logger.debug({ projectId }, 'clearing project state via http')
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ProjectManager.clearProjectState(projectId, error => {
timer.done()
if (error) {
next(error)
} else {
res.sendStatus(200)
}
})
}
function setDoc(req, res, next) {
const docId = req.params.doc_id
const projectId = req.params.project_id
const { lines, source, user_id: userId, undoing } = req.body
const lineSize = getTotalSizeOfLines(lines)
if (lineSize > Settings.max_doc_length) {
logger.warn(
{ projectId, docId, source, lineSize, userId },
'document too large, returning 406 response'
)
return res.sendStatus(406)
}
logger.debug(
{ projectId, docId, lines, source, userId, undoing },
'setting doc via http'
)
const timer = new Metrics.Timer('http.setDoc')
DocumentManager.setDocWithLock(
projectId,
docId,
lines,
source,
userId,
undoing,
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error => {
timer.done()
if (error) {
return next(error)
}
logger.debug({ projectId, docId }, 'set doc via http')
res.sendStatus(204) // No Content
}
)
}
function flushDocIfLoaded(req, res, next) {
const docId = req.params.doc_id
const projectId = req.params.project_id
logger.debug({ projectId, docId }, 'flushing doc via http')
const timer = new Metrics.Timer('http.flushDoc')
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DocumentManager.flushDocIfLoadedWithLock(projectId, docId, error => {
timer.done()
if (error) {
return next(error)
}
logger.debug({ projectId, docId }, 'flushed doc via http')
res.sendStatus(204) // No Content
})
}
function deleteDoc(req, res, next) {
const docId = req.params.doc_id
const projectId = req.params.project_id
const ignoreFlushErrors = req.query.ignore_flush_errors === 'true'
const timer = new Metrics.Timer('http.deleteDoc')
logger.debug({ projectId, docId }, 'deleting doc via http')
DocumentManager.flushAndDeleteDocWithLock(
projectId,
docId,
{ ignoreFlushErrors },
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error => {
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timer.done()
// There is no harm in flushing project history if the previous call
// failed and sometimes it is required
HistoryManager.flushProjectChangesAsync(projectId)
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if (error) {
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return next(error)
}
logger.debug({ projectId, docId }, 'deleted doc via http')
res.sendStatus(204) // No Content
}
)
}
function flushProject(req, res, next) {
const projectId = req.params.project_id
logger.debug({ projectId }, 'flushing project via http')
const timer = new Metrics.Timer('http.flushProject')
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ProjectManager.flushProjectWithLocks(projectId, error => {
timer.done()
if (error) {
return next(error)
}
logger.debug({ projectId }, 'flushed project via http')
res.sendStatus(204) // No Content
})
}
function deleteProject(req, res, next) {
const projectId = req.params.project_id
logger.debug({ projectId }, 'deleting project via http')
const options = {}
if (req.query.background) {
options.background = true
} // allow non-urgent flushes to be queued
if (req.query.shutdown) {
options.skip_history_flush = true
} // don't flush history when realtime shuts down
if (req.query.background) {
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ProjectManager.queueFlushAndDeleteProject(projectId, error => {
if (error) {
return next(error)
}
logger.debug({ projectId }, 'queue delete of project via http')
res.sendStatus(204)
}) // No Content
} else {
const timer = new Metrics.Timer('http.deleteProject')
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ProjectManager.flushAndDeleteProjectWithLocks(projectId, options, error => {
timer.done()
if (error) {
return next(error)
}
logger.debug({ projectId }, 'deleted project via http')
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res.sendStatus(204) // No Content
})
}
}
function deleteMultipleProjects(req, res, next) {
const projectIds = req.body.project_ids || []
logger.debug({ projectIds }, 'deleting multiple projects via http')
async.eachSeries(
projectIds,
(projectId, cb) => {
logger.debug({ projectId }, 'queue delete of project via http')
ProjectManager.queueFlushAndDeleteProject(projectId, cb)
},
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error => {
if (error) {
return next(error)
}
res.sendStatus(204) // No Content
}
)
}
function acceptChanges(req, res, next) {
const { project_id: projectId, doc_id: docId } = req.params
let changeIds = req.body.change_ids
if (changeIds == null) {
changeIds = [req.params.change_id]
}
logger.debug(
{ projectId, docId },
`accepting ${changeIds.length} changes via http`
)
const timer = new Metrics.Timer('http.acceptChanges')
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DocumentManager.acceptChangesWithLock(projectId, docId, changeIds, error => {
timer.done()
if (error) {
return next(error)
}
logger.debug(
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{ projectId, docId },
`accepted ${changeIds.length} changes via http`
)
res.sendStatus(204) // No Content
})
}
function deleteComment(req, res, next) {
const {
project_id: projectId,
doc_id: docId,
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comment_id: commentId,
} = req.params
logger.debug({ projectId, docId, commentId }, 'deleting comment via http')
const timer = new Metrics.Timer('http.deleteComment')
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DocumentManager.deleteCommentWithLock(projectId, docId, commentId, error => {
timer.done()
if (error) {
return next(error)
}
logger.debug({ projectId, docId, commentId }, 'deleted comment via http')
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res.sendStatus(204) // No Content
})
}
function updateProject(req, res, next) {
const timer = new Metrics.Timer('http.updateProject')
const projectId = req.params.project_id
const { projectHistoryId, userId, updates = [], version, source } = req.body
logger.debug({ projectId, updates, version }, 'updating project via http')
ProjectManager.updateProjectWithLocks(
projectId,
projectHistoryId,
userId,
updates,
version,
source,
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error => {
timer.done()
if (error) {
return next(error)
}
logger.debug({ projectId }, 'updated project via http')
res.sendStatus(204) // No Content
}
)
}
function resyncProjectHistory(req, res, next) {
const projectId = req.params.project_id
const { projectHistoryId, docs, files } = req.body
logger.debug(
{ projectId, docs, files },
'queuing project history resync via http'
)
HistoryManager.resyncProjectHistory(
projectId,
projectHistoryId,
docs,
files,
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error => {
if (error) {
return next(error)
}
logger.debug({ projectId }, 'queued project history resync via http')
res.sendStatus(204)
}
)
}
function flushAllProjects(req, res, next) {
res.setTimeout(5 * 60 * 1000)
const options = {
limit: req.query.limit || 1000,
concurrency: req.query.concurrency || 5,
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dryRun: req.query.dryRun || false,
}
ProjectFlusher.flushAllProjects(options, (err, projectIds) => {
if (err) {
logger.err({ err }, 'error bulk flushing projects')
res.sendStatus(500)
} else {
res.send(projectIds)
}
})
}
function flushQueuedProjects(req, res, next) {
res.setTimeout(10 * 60 * 1000)
const options = {
limit: req.query.limit || 1000,
timeout: 5 * 60 * 1000,
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min_delete_age: req.query.min_delete_age || 5 * 60 * 1000,
}
DeleteQueueManager.flushAndDeleteOldProjects(options, (err, flushed) => {
if (err) {
logger.err({ err }, 'error flushing old projects')
res.sendStatus(500)
} else {
logger.info({ flushed }, 'flush of queued projects completed')
res.send({ flushed })
}
})
}