I deployed a react app with the server being hosted on Heroku, and the backend/Heroku keeps on crashing after a few page loads or messages I send on the app.
To clarify, the app works initially with no signs of impending error, and then...crash.
I made numerous changes to my code to try and find the problem. Nothing. Thanks in advance for any help.
createPool
Just in case this helps anyone in the future...I set up mySQL DB using createConnection instead of createPool. If I am not mistaken, pool dynamically creates connections so that the server does not crash when lots of users connect to it.
Related
The specific action we are trying to performe is to create a charge request with Stripe:
Charge charge = Charge.create(params);
Using Stripe's Java implementation (version 5.35.1) we encounter a APIConnectionException when running the application on the deployed App Engine server. Interestingly, the issue does not occur using App Engine's local dev server.
We contacted Stripe and they said everything is fine on their side. They explained that "this error indicates that your server is not able to contact our API and that it ends up timing out waiting for an answer. Usually, this is due to something misconfigured on your server such as a DNS not redirecting to Stripe properly."
We were wondering if there are some configuration settings on App Engine which cause the problem. However, since there is no specific error message we cound not figure out what might cause the connection problem.
Similar problems which did not provide enough help to resolve this issue: https://issuetracker.google.com/35901039
Thanks for your help!
The problem seems to have solved itself. It occured for a couple of days and since a few hours the exact same code is working fine. Just like in https://issuetracker.google.com/issues/35901039 the problem is suddenly gone for some reason.
I tried to set up WordPress under Google App Engine earlier tonight (following the instructions here: https://developers.google.com/appengine/articles/wordpress).
It runs fine locally, but when I push to remote I get a database error (visible at https://wp-dot-frontiermediag.appspot.com/). If we throw on a /wp_admin/install.php you get:
This either means that the username and password information in your
wp-config.php file is incorrect or we can't contact the database server
at :/cloudsql/frontiermediag:fmwp. This could mean your host's database
server is down.
Here's the relevant code in wp-config:
/** MySQL hostname */
if(isset($_SERVER['SERVER_SOFTWARE']) && strpos($_SERVER['SERVER_SOFTWARE'],'Google App Engine') !== false) {
define('DB_HOST', ':/cloudsql/frontiermediag:fmwp');
}else{
define('DB_HOST', 'localhost');
}
frontiermediag:fmwp is showing "Status Runnable" in Developers Console > Cloud SQL.
I did this once before and it worked so I'm not sure what I'm missing here. I thought it might have been because I'm using WP 3.8.1. but rolled back to 3.5.1 and same thing's happening.
Any ideas? frontiermediag is listed as an authorized application on the :fmwp ACL.
This situation happened to me earlier.However, I edited my Cloud SQL instance , and set "Preferred Location" as "Follow App Engine App" from Google Developers Console. This database connection problem was solved in my case.
I tried the instructions with wordpress 3.5.1 and the instructions seem to work for me. The code snippet you have above seems right and I am not sure what could be wrong without looking at rest of your code. Can you try the instructions from the beginning one more time with 3.5.1?
I had this issue, because "Follow App Engine App" doesn't seem to be an option for second generation instances in my case, and so the instance connection name includes the region setting.
Look at the instance details, and under properties, find "Instance connection name". That is the text that should follow :cloudsql/.
Well, I'm having a weird error here:
I'm developing one GAE app to read some Twitter Data, and after read a lot of docs, I have it working on my test server (Running on my pc) but after deploy and test on the real (my appspot domain) it shows this message:
401:Authentication credentials (https://dev.twitter.com/pages/auth) were missing or >incorrect. Ensure that you have set valid consumer key/secret, access token/secret, and the >system clock is in sync.
message - Could not authenticate you
code - 32
I've tried to recreate my OAuthAppToken and OAuthAppTokenSecret keys, even changing the permissions to "Write, Read and Direct Messages" and even assingning one Callback URL but nothing seems to work...
I've tried using twitter4j.properties OR using setOAuthConsumer(TW_CONSUMER_KEY, TW_CONSUMER_SECRET) OR a ConfigurationBuilder whith the correct constants and I'm experimenting the same Issue.
I'm working with AppEngine 1.8.3 and Twitter4j 3.0.4
Iv'e been writing on log and the Twitter object seems to be well created... I dont understand why is working on my PC but not on the real app.
On some other post someone says that could be because it needs to use Sync clock.. but he doesn't explains where to change that property...
Did someone had a clue?
Ok, the problem was me (and Twitter.... well..... I really think it was Twitter problem for being so dark on his api messages)...
On testing server I was looking for an existing account and on the cloud I was looking for an inexistent one. So, It was my mistake. But seriously, what about Twitter saying: "Access Forbidden"? That doesn't have any sense...
The quickstart app started acting strangely for me. I can't auth any users. I'm getting the below error. This works fine locally though. Anyone know how to fix this or get around it?
Here's where it's happening in the code (AuthServlet:55)
LOG.info("Got a code. Attempting to exchange for access token.");
AuthorizationCodeFlow flow = AuthUtil.newAuthorizationCodeFlow();
TokenResponse tokenResponse =
flow.newTokenRequest(req.getParameter("code"))
.setRedirectUri(WebUtil.buildUrl(req, "/oauth2callback")).execute();
Uncaught exception from servlet
java.net.SocketTimeoutException: Timeout while fetching URL:
https://accounts.google.com/o/oauth2/token
at com.google.appengine.api.urlfetch.URLFetchServiceImpl.convertApplicationException(URLFetchServiceImpl.java:141)
at com.google.appengine.api.urlfetch.URLFetchServiceImpl.fetch(URLFetchServiceImpl.java:43)
at com.google.api.client.extensions.appengine.http.UrlFetchRequest.execute(UrlFetchRequest.java:75)
at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:980)
at com.google.api.client.auth.oauth2.TokenRequest.executeUnparsed(TokenRequest.java:299)
at com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeTokenRequest.execute(GoogleAuthorizationCodeTokenRequest.java:175)
at com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeTokenRequest.execute(GoogleAuthorizationCodeTokenRequest.java:78)
at com.google.glassware.AuthServlet.doGet(AuthServlet.java:55)
Thanks in advance
This looks like a bug in App Engine and the Google OAuth endpoints. It's being tracked in the Glass issue tracker. You can star that issue to receive updates as the investigation proceeds.
In the mean time, check out the .NET and PHP quick starts. They're working great.
Google has had some intermittent connectivity issues over the last two days. It appears to be working fine now.
See reports on the Google App Engine downtime notification group
https://groups.google.com/forum/?fromgroups#!topic/google-appengine-downtime-notify/TqKVL9TNq2A
I have this site, a random little one i just play around on with jsf and primefaces.
I have my own domain connected to it, and hosted it on google-app-engine...
It's been working as a charm right up until now. I have not done anything on the site due to vacation time, and suddenly the site is down? It was working when i deployed the last time, now when i go to my site i get this:
Error: Server Error
The server encountered an error and could not complete your request.
If the problem persists, please report your problem and mention this error message and the query that caused it.
It tells me absolutely nothing, i've tried to re deploy my app, after checking that it worked fine running locally. The first couple of time it just kept on waiting for a verify.. So i stopped it, which led me to learn how to do a rollback as i could not redeploy with the same version number after i stopped it the first time.
I got the rollback fixed, and i now deployed what i know i working code to the app-engine, and still when navigating to my site i get the above error? :S
I'm totally clueless here as the error doesn't really give me anything :S
Anyone have any ideas, i can post code etc. if necessary but something tells me that it is something else seeing that my code runs locally, and ran fine deployed too :S
You can find the log file for your web application at
https://appengine.google.com/logs?&app_id=yourappname
or on the Dashboard page in the list on the left side.
If you deploy a new version, also re-start the browser to clear old session data.
(Maybe you still get the 500 error still because of old session data).