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1925fa0196
closes #1470 issue #1405 - added cache control middleware - added defaults for all routes, assets, etc - updated asset helper to add a query string with a timestamp hash to all assets - added unit tests for asset and ghostScriptTags helpers - added cache-control checks to route tests
68 lines
2.4 KiB
JavaScript
68 lines
2.4 KiB
JavaScript
// # Local File System Image Storage module
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// The (default) module for storing images, using the local file system
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var _ = require('underscore'),
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express = require('express'),
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fs = require('fs-extra'),
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nodefn = require('when/node/function'),
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path = require('path'),
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when = require('when'),
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errors = require('../errorHandling'),
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configPaths = require('../config/paths'),
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baseStore = require('./base'),
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localFileStore;
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localFileStore = _.extend(baseStore, {
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// ### Save
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// Saves the image to storage (the file system)
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// - image is the express image object
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// - returns a promise which ultimately returns the full url to the uploaded image
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'save': function (image) {
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var saved = when.defer(),
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targetDir = this.getTargetDir(configPaths().imagesRelPath),
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targetFilename;
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this.getUniqueFileName(this, image, targetDir).then(function (filename) {
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targetFilename = filename;
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return nodefn.call(fs.mkdirs, targetDir);
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}).then(function () {
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return nodefn.call(fs.copy, image.path, targetFilename);
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}).then(function () {
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return nodefn.call(fs.unlink, image.path).otherwise(errors.logError);
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}).then(function () {
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// The src for the image must be in URI format, not a file system path, which in Windows uses \
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// For local file system storage can use relative path so add a slash
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var fullUrl = (configPaths().subdir + '/' + targetFilename).replace(new RegExp('\\' + path.sep, 'g'), '/');
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return saved.resolve(fullUrl);
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}).otherwise(function (e) {
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errors.logError(e);
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return saved.reject(e);
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});
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return saved.promise;
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},
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'exists': function (filename) {
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// fs.exists does not play nicely with nodefn because the callback doesn't have an error argument
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var done = when.defer();
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fs.exists(filename, function (exists) {
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done.resolve(exists);
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});
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return done.promise;
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},
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// middleware for serving the files
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'serve': function () {
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var ONE_HOUR_MS = 60 * 60 * 1000,
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ONE_YEAR_MS = 365 * 24 * ONE_HOUR_MS;
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// For some reason send divides the max age number by 1000
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return express['static'](configPaths().imagesPath, {maxAge: ONE_YEAR_MS});
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}
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});
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module.exports = localFileStore;
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