Initial open source commit

app/coffee/ProjectPersistenceManager.coffee

@@ -0,0 +1,54 @@
+UrlCache = require "./UrlCache"
+CompileManager = require "./CompileManager"
+db = require "./db"
+async = require "async"
+logger = require "logger-sharelatex"
+
+module.exports = ProjectPersistenceManager =
+	EXPIRY_TIMEOUT: oneDay = 24 * 60 * 60 * 1000 #ms
+
+	markProjectAsJustAccessed: (project_id, callback = (error) ->) ->
+		db.Project.findOrCreate(project_id: project_id)
+			.success(
+				(project) ->
+					project.updateAttributes(lastAccessed: new Date())
+						.success(() -> callback())
+						.error callback
+			)
+			.error callback
+
+	clearExpiredProjects: (callback = (error) ->) ->
+		ProjectPersistenceManager._findExpiredProjectIds (error, project_ids) ->
+			return callback(error) if error?
+			logger.log project_ids: project_ids, "clearing expired projects"
+			jobs = for project_id in (project_ids or [])
+				do (project_id) ->
+					(callback) ->
+						ProjectPersistenceManager.clearProject project_id, (err) ->
+							if err?
+								logger.error err: err, project_id: project_id, "error clearing project"
+							callback()
+			async.series jobs, callback
+
+	clearProject: (project_id, callback = (error) ->) ->
+		logger.log project_id: project_id, "clearing project"
+		CompileManager.clearProject project_id, (error) ->
+			return callback(error) if error?
+			UrlCache.clearProject project_id, (error) ->
+				return callback(error) if error?
+				ProjectPersistenceManager._clearProjectFromDatabase project_id, (error) ->
+					return callback(error) if error?
+					callback()
+
+	_clearProjectFromDatabase: (project_id, callback = (error) ->) ->
+		db.Project.destroy(project_id: project_id)
+			.success(() -> callback())
+			.error callback
+
+	_findExpiredProjectIds: (callback = (error, project_ids) ->) ->
+		db.Project.findAll(where: ["lastAccessed < ?", new Date(Date.now() - ProjectPersistenceManager.EXPIRY_TIMEOUT)])
+			.success(
+				(projects) ->
+					callback null, projects.map((project) -> project.project_id)
+			)
+			.error callback