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cache static assets in memory
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parent
e4da28de8a
commit
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2 changed files with 26 additions and 2 deletions
6
TODO
6
TODO
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@ -1,10 +1,12 @@
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cache headers for static assets (and on document GET)
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tests
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add FAVICON (or force 404)
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cache static in memory
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add feedback for errors to UI - esp. too long
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copy URL to clipboard button
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add about page
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make asset caching optional
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todo store buffer instead of string while grabbing contents (if possible)
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write cache to use callback instead of using non-DRY code
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# shared version only
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some way to do announcements easily (and use for ads)
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copy URL to clipboard button
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@ -16,6 +16,8 @@ var StaticHandler = function(path) {
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}
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};
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StaticHandler.cache = {};
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// Determine the content type for a given extension
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StaticHandler.contentTypeFor = function(ext) {
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if (ext == '.js') return 'text/javascript';
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@ -34,6 +36,16 @@ StaticHandler.prototype.handle = function(incPath, response) {
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if (!this.availablePaths[incPath]) incPath = this.defaultPath;
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var filePath = this.basePath + (incPath == '/' ? this.defaultPath : incPath);
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// And then stream the file back
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if (StaticHandler.cache[filePath]) {
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this.serveCached(filePath, response);
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}
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else {
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this.retrieve(filePath, response);
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}
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};
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// Retrieve from the file
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StaticHandler.prototype.retrieve = function(filePath, response) {
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var _this = this;
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fs.readFile(filePath, function(error, content) {
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if (error) {
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@ -45,8 +57,18 @@ StaticHandler.prototype.handle = function(incPath, response) {
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var contentType = StaticHandler.contentTypeFor(path.extname(filePath));
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response.writeHead(200, { 'content-type': contentType });
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response.end(content, 'utf-8');
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// Stick it in the cache
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StaticHandler.cache[filePath] = content;
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}
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});
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};
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// Retrieve from memory cache
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StaticHandler.prototype.serveCached = function(filePath, response) {
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var contentType = StaticHandler.contentTypeFor(path.extname(filePath));
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response.writeHead(200, { 'content-type': contentType });
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response.end(StaticHandler.cache[filePath], 'utf-8');
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};
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module.exports = StaticHandler;
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