overleaf/services/filestore/app/coffee/FileHandler.coffee

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CoffeeScript
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2014-02-14 16:39:05 +00:00
settings = require("settings-sharelatex")
s3Wrapper = require("./s3Wrapper")
LocalFileWriter = require("./LocalFileWriter")
logger = require("logger-sharelatex")
FileConverter = require("./FileConverter")
KeyBuilder = require("./KeyBuilder")
async = require("async")
ImageOptimiser = require("./ImageOptimiser")
module.exports =
insertFile: (bucket, key, stream, callback)->
convetedKey = KeyBuilder.getConvertedFolderKey(key)
s3Wrapper.deleteDirectory bucket, convetedKey, ->
s3Wrapper.sendStreamToS3 bucket, key, stream, ->
callback()
deleteFile: (bucket, key, callback)->
convetedKey = KeyBuilder.getConvertedFolderKey(bucket, key)
async.parallel [
(done)-> s3Wrapper.deleteFile bucket, key, done
(done)-> s3Wrapper.deleteFile bucket, convetedKey, done
], callback
getFile: (bucket, key, opts = {}, callback)->
logger.log bucket:bucket, key:key, opts:opts, "getting file"
if !opts.format? and !opts.style?
@_getStandardFile bucket, key, opts, callback
else
@_getConvertedFile bucket, key, opts, callback
_getStandardFile: (bucket, key, opts, callback)->
s3Wrapper.getFileStream bucket, key, (err, fileStream)->
if err?
logger.err bucket:bucket, key:key, opts:opts, "error getting fileStream"
callback err, fileStream
_getConvertedFile: (bucket, key, opts, callback)->
convetedKey = KeyBuilder.addCachingToKey(key, opts)
s3Wrapper.checkIfFileExists bucket, convetedKey, (err, exists)=>
if exists
s3Wrapper.getFileStream bucket, convetedKey, callback
else
@_getConvertedFileAndCache bucket, key, convetedKey, opts, callback
_getConvertedFileAndCache: (bucket, key, convetedKey, opts, callback)->
@_convertFile bucket, key, opts, (err, fsPath)->
if err?
logger.err err:err, fsPath:fsPath, bucket:bucket, key:key, opts:opts, "something went wrong with converting file"
return callback(err)
ImageOptimiser.compressPng fsPath, (err)->
if err?
logger.err err:err, fsPath:fsPath, bucket:bucket, key:key, opts:opts, "something went wrong optimising png file"
return callback(err)
s3Wrapper.sendFileToS3 bucket, convetedKey, fsPath, (err)->
if err?
logger.err err:err, bucket:bucket, key:key, convetedKey:convetedKey, opts:opts, "something went wrong seing file to s3"
return callback(err)
s3Wrapper.getFileStream bucket, convetedKey, callback
_convertFile: (bucket, origonalKey, opts, callback)->
@_writeS3FileToDisk bucket, origonalKey, (err, origonalFsPath)->
if opts.format?
FileConverter.convert origonalFsPath, opts.format, callback
else if opts.style == "thumbnail"
FileConverter.thumbnail origonalFsPath, callback
else if opts.style == "preview"
FileConverter.preview origonalFsPath, callback
else
throw new Error("should have specified opts to convert file with #{JSON.stringify(opts)}")
_writeS3FileToDisk: (bucket, key, callback)->
s3Wrapper.getFileStream bucket, key, (err, fileStream)->
LocalFileWriter.writeStream fileStream, key, callback