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janeporter
Courses Plus Student 23,471 Pointsbad gateway error on workspaces preview
i keep getting a bad gateway error (code 501) on previews for workspaces now. This is the address that is getting the error:
http://port-3000-hkji8zsut5.treehouse-app.com/
why is that and how can i fix it?
5 Answers
josue exhume
20,981 Pointsmake sure your check for the get is
if(request.method.toLowerCase() === "get"){
and not
if(request.method.toLowerCase === "get"){
because i had the same error as you and that turned out to be my problem. Hope that helped =]
janeporter
Courses Plus Student 23,471 Pointsi have that, and i'm still getting the error. the workspace page is stating 'workspace unavailable: this is a preview link for a Treehouse Workspace that is not currently active.'
then i see these errors when i do an inspect element:
Failed to load resource: the server responded with a status of 502 (Bad Gateway) http://port-3000-hkji8zsut5.treehouse-app.com/ Failed to load resource: the server responded with a status of 502 (Bad Gateway) Failed to clear temp storage: It was determined that certain files are unsafe for access within a Web application, or that too many calls are being made on file resources. SecurityError
josue exhume
20,981 Pointsim not to sure why that happened, but i looked at what the 502 error was, turn out its "The server cannot process the request due to a high load (whether HTTP servicing or other requests)." so im guessing it has to do with the request were doing in the home function.
but take a look at my router.js file check to see if you have anything different
var Profile = require("./profile.js");
var renderer = require('./renderer.js');
var querystring = require("querystring");
var commonHeaders ={'Content-Type': 'text/html'};
//Handle HTTP route GET / and POST / I.E Home
function home (request, response) {
// if url =="/" && GET
if(request.url === "/"){
if(request.method.toLowerCase() === "get"){
//show search field
response.writeHead(200, commonHeaders);
renderer.view("header",{},response);
renderer.view("search",{},response);
renderer.view("footer",{},response);
response.end();
} else {
// if url == "/" && POST
//get the post data from body
request.on("data",function(postBody){
//extract the username
var query = querystring.parse(postBody.toString());
//redirect to username
response.writeHead(303, {"Location": "/" + query.username});
response.end();
});
}
}
}
//Handle HTTP route GET /:username i.e /josueexhume
function user (request, response) {
// if url =="/.."
var username = request.url.replace("/", "");
if (username.length > 0){
response.writeHead(200, commonHeaders);
renderer.view("header", {},response);
//get json from Treehouse
var studentProfile = new Profile(username);
// on "end"
studentProfile.on("end", function(profileJSON){
//show profile
//store the values we need
var values = {
avatarUrl: profileJSON.gravatar_url,
username: profileJSON.profile_name,
badges: profileJSON.badges.length,
javaScript: profileJSON.points.JavaScript
}
//simple reponse
renderer.view("profile", values, response);
renderer.view("footer",{},response);
response.end();
});
//on error
studentProfile.on("error", function(error){
//show error
renderer.view("error", {errorMessage: error.message}, response);
renderer.view("search",{},response);
renderer.view("footer",{},response);
response.end();
});
}
}
module.exports.home = home;
module.exports.user = user;
heres my renderer.js file also
var fs = require('fs');
function mergeValues(values, content){
//cycle over the keys
for(var key in values){
content = content.replace("{{"+ key +"}}", values[key]);
}
//replace all{{key}} with the vale from the values object
//return merged content
return content;
}
function view (templateName, values, response) {
var fileContent = fs.readFileSync('./views/'+templateName+ '.html', {encoding: "utf8"});
//read from the template file
fileContent = mergeValues(values,fileContent);
//insert values in to the content
//write out to the response
response.write(fileContent);
}
module.exports.view = view;
hope this can help in any way.
Thomas Katalenas
11,033 Pointsan example of streaming
var readable = getReadableStreamSomehow();
readable.on('data', (chunk) => {
console.log('got %d bytes of data', chunk.length);
});
Thomas Katalenas
11,033 PointsWhen a chunk of data can be read from the stream, it will emit a 'readable' event.
In some cases, listening for a 'readable' event will cause some data to be read into the internal buffer from the underlying system, if it hadn't already.
I guess this 'readable' is slightly different from 'data' it is the leftover that 'data' doesn't take care of gets streamed.
var readable = getReadableStreamSomehow();
readable.on('readable', () => {
// there is some data to read now
});
janeporter
Courses Plus Student 23,471 Pointsjaneporter
Courses Plus Student 23,471 Pointsthis started yesterday afternoon.