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115 lines
4.5 KiB
CoffeeScript
115 lines
4.5 KiB
CoffeeScript
logger = require("logger-sharelatex")
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fs = require("fs")
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request = require("request")
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settings = require("settings-sharelatex")
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Async = require('async')
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oneMinInMs = 60 * 1000
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fiveMinsInMs = oneMinInMs * 5
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module.exports = FileStoreHandler =
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RETRY_ATTEMPTS: 3
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uploadFileFromDisk: (project_id, file_id, fsPath, callback)->
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fs.lstat fsPath, (err, stat)->
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if err?
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logger.err err:err, project_id:project_id, file_id:file_id, fsPath:fsPath, "error stating file"
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callback(err)
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if !stat?
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logger.err project_id:project_id, file_id:file_id, fsPath:fsPath, "stat is not available, can not check file from disk"
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return callback(new Error("error getting stat, not available"))
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if !stat.isFile()
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logger.log project_id:project_id, file_id:file_id, fsPath:fsPath, "tried to upload symlink, not contining"
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return callback(new Error("can not upload symlink"))
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Async.retry FileStoreHandler.RETRY_ATTEMPTS, (cb) ->
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FileStoreHandler._doUploadFileFromDisk project_id, file_id, fsPath, cb
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, (err, url) ->
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if err?
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logger.err {err, project_id, file_id}, "Error uploading file, retries failed"
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callback(err, url)
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_doUploadFileFromDisk: (project_id, file_id, fsPath, callback) ->
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_cb = callback
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callback = (err, url) ->
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callback = -> # avoid double callbacks
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_cb(err, url)
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logger.log project_id:project_id, file_id:file_id, fsPath:fsPath, "uploading file from disk"
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readStream = fs.createReadStream(fsPath)
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readStream.on "error", (err)->
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logger.err err:err, project_id:project_id, file_id:file_id, fsPath:fsPath, "something went wrong on the read stream of uploadFileFromDisk"
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callback err
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readStream.on "open", () ->
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url = FileStoreHandler._buildUrl(project_id, file_id)
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opts =
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method: "post"
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uri: url
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timeout:fiveMinsInMs
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writeStream = request(opts)
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writeStream.on "error", (err)->
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logger.err err:err, project_id:project_id, file_id:file_id, fsPath:fsPath, "something went wrong on the write stream of uploadFileFromDisk"
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callback err
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writeStream.on 'response', (response) ->
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if response.statusCode not in [200, 201]
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err = new Error("non-ok response from filestore for upload: #{response.statusCode}")
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logger.err {err, statusCode: response.statusCode}, "error uploading to filestore"
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callback(err)
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else
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callback(null, url)
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readStream.pipe writeStream
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getFileStream: (project_id, file_id, query, callback)->
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logger.log project_id:project_id, file_id:file_id, query:query, "getting file stream from file store"
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queryString = ""
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if query? and query["format"]?
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queryString = "?format=#{query['format']}"
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opts =
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method : "get"
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uri: "#{@_buildUrl(project_id, file_id)}#{queryString}"
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timeout:fiveMinsInMs
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headers: {}
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if query? and query['range']?
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rangeText = query['range']
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if rangeText && rangeText.match? && rangeText.match(/\d+-\d+/)
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opts.headers['range'] = "bytes=#{query['range']}"
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readStream = request(opts)
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readStream.on "error", (err) ->
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logger.err {err, project_id, file_id, query, opts}, "error in file stream"
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callback(null, readStream)
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deleteFile: (project_id, file_id, callback)->
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logger.log project_id:project_id, file_id:file_id, "telling file store to delete file"
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opts =
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method : "delete"
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uri: @_buildUrl(project_id, file_id)
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timeout:fiveMinsInMs
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request opts, (err, response)->
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if err?
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logger.err err:err, project_id:project_id, file_id:file_id, "something went wrong deleting file from filestore"
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callback(err)
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copyFile: (oldProject_id, oldFile_id, newProject_id, newFile_id, callback)->
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logger.log oldProject_id:oldProject_id, oldFile_id:oldFile_id, newProject_id:newProject_id, newFile_id:newFile_id, "telling filestore to copy a file"
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opts =
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method : "put"
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json:
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source:
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project_id:oldProject_id
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file_id:oldFile_id
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uri: @_buildUrl(newProject_id, newFile_id)
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timeout:fiveMinsInMs
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request opts, (err, response)->
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if err?
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logger.err err:err, oldProject_id:oldProject_id, oldFile_id:oldFile_id, newProject_id:newProject_id, newFile_id:newFile_id, "something went wrong telling filestore api to copy file"
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callback(err)
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else if 200 <= response.statusCode < 300
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# successful response
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callback(null, opts.uri)
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else
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err = new Error("non-ok response from filestore for copyFile: #{response.statusCode}")
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logger.err {uri: opts.uri, statusCode: response.statusCode}, "error uploading to filestore"
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callback(err)
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_buildUrl: (project_id, file_id)->
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return "#{settings.apis.filestore.url}/project/#{project_id}/file/#{file_id}"
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