I'm able to deploy a .net core console app on PCF which raises some internal events and runs for sometime(with help of Thread.Delay()) and exits. I want to be able to start and stop this app remotely, using a batch file from windows machine.
When I push this app to PCF I have explicitly put --no-start flag in the push command. The app gets deployed and doesn't starts and I can start this remotely with cf start command. Once it exits successfully PCF tries to restart it considering it as crashed so in order to restart i would first need to cf stop and then use start command.
I need help in understanding - if there is any other better way to do this. Originally we were planning to use Tasks on PCF; but as per my understanding Tasks are command which runs on other application(please correct me if I am wrong)
Any thoughts will help.
Thanks in advance.
I modified my app logic to achieve this. I did the following -
Deployed app with --no-start flag
In the app entry method I checking the value of arg passed from command line
if arg==required_key then run the job else return
I do a cf start which builds, stages the app and the app gets started but no results displayed on console
cf stop
cf run-task APP_NAME "dotnet appname.dll required_key"
The above task runs one time and destroys itself.
I am running Codeception tests in a Symfony2 project and I am developing in PHPstorm.
Debugging codeception used to work, but i recently started a new project it doesn't anymore. Everything is configured as it should. When I set phpstorm to start listening for connections, and I set a breakpoint in bin/codecept. The debugger halts at the breakpoint (as it should).
But when I set the breakpoint in a test (which is definetly ran), I get the message
16:10:41 Debug session was finished without being paused
It may be caused by path mappings misconfiguration or not synchronized local and remote projects.
To figure out the problem check path mappings configuration for 'null' server at PHP|Servers or enable Break at first line in PHP scripts option (from Run menu).
Do not show again (show balloon)
I do believe that something is going wrong with the path mapping, because my server is running on a symlink, but why does debugging app/console and codeception itself work, but not the tests ?
Probably because of this:
https://github.com/Codeception/Codeception/issues/1636#issuecomment-71205765
test is not executed directly, it is triggered from reflection.
I have a strange issue. I build my Meteor app and run it on android device using -
meteor run android-device --mobile-server=<my_aws_ip>:3000
When the app deploys immediately it connects to the server (and my javascripts etc works). After a few seconds, the page refreshs and none of the javascript callbacks work. Please help me debug this issue.
More information: If I change the client (and not the server), and deploy it, for the first few seconds, the changed client gets shown on the phone. After the first few seconds, the version which is present on the server is shown. So I think Cordova or Meteor is trying to fetch the client code from the server, which is breaking the app. Is there a way to prevent this behavior?
Even more data points -
My aws code does NOT have android and ios platforms installed. Because of this, I think the cordova plugins are not installed, causing a JS break somewhere.
Easiest fix I can think of is remove cordova autoupdate. This is being added by meteor-platform package. If I clone meteor-platform and comment out the cordova autoupdate, the app doesn't load.
Is there another way of removing autoupdate?
This sounds like you have a different version of your app deployed at the mobile-server address.
The local code is run in development mode. Your AWS one is likely in production mode (and may contain a syntax error).
When you run your app it sees the code is different and fetches the new/old (different) version with a hot code reload - hence the page refresh/flash.
To fix this, you need to find the syntax error in your code. It's best to view the ADB logger or run with meteor run --verbose android-device ....
This will provide a bit more information such as an Uncaught exception: cannot read .. of null error type error.
It's hard to say what the error is. The error prevents the rest of your code from executing. In production mode the entire project is one JS file. If there is an error of any kind half way along the file, the rest of the file will not execute.
Also, try loading <my_aws_ip>:3000 in your browser and watch for JS errors in the JS console.
You can also run it locally with --production to simulate a production build environment locally.
Enabling autoupdate but without a page refresh:
Reload._reload = function (options) {
console.log("Next load will load new version");
};
On localhost, the app works just fine.
On EC2, the app runs behind nginx. It loads into the browser, but nothing shows up. The browser console displays an Error
TypeError: 'undefined' is not an object (evaluating 'Package["service-configuration"].ServiceConfiguration')
I have no idea how to tackle this problem. Any help appreciated.
EDIT
NGINX is not the problem. The same behavior if I access meteor server directly.
Running "meteor add service-configuration" does fix the above mentioned error, but the absence of the error does not fix the observed behavior, that the app does not render on EC2 whereas it does render when started on localhost. (The error message was the only visible difference between EC2 and localhost. So I suspected that would be the cause. Now that hypothesis must be wrong.) So the problem still persists.
Problem Solved. The Lesson:
Meteor has a debug mode and a production mode. The two may behave differently. On localhost, meteor runs in debug mode per default. On deploy to meteor.com or per mup, the default is production mode. To run meteor in production mode on localhost, run meteor --production.
It looks like you're trying to access the service-configuration configs on your browser.
These are not available client side. This also affects your localhost app but it doesn't break your app (doesn't give you a blank page) because meteor is in debug mode.
In debug mode Meteor files are not concatenated so an error like this would go unnoticed, even if it is thrown on your js console. In production mode the error would halt the rest of your script (since everything is concatenated into a single file)
You need to ensure the code that is doing this only runs on the server side. In general it's not a good idea to have access to the service configuration data on the client side.
Looks like Arunoda and crew are adding a buildOptions.debug setting to the next version of MUP, which should allow you to deploy via MUP and have it act like it's running on localhost. See Arunoda's answer to a related question and (at least for now) documentation for the development version of MUP.
Does anyone know a good method to debug server side code?
I tried enable Node.js debug then use node-inspector but it does not show any of my code.
I end up using console.log but this is very inefficient.
Update: I found the following procedure works on my Linux machine:
When you run Meteor, it will spawn two processes
process1: /usr/lib/meteor/bin/node /usr/lib/meteor/app/meteor/meteor.js
process2: /usr/lib/meteor/bin/node /home/paul/codes/bbtest_code/bbtest02/.meteor/local/build/main.js --keepalive
You need to send kill -s USR1 on process2
Run node-inspector and you can see your server code
On my first try, I modify the last line on meteor startup script in /usr/lib/meteor/bin/meteor to
exec "$DEV_BUNDLE/bin/node" $NODE_DEBUG "$METEOR" "$#"
and run NODE_DEBUG=--debug meteor on command prompt. This only put --debug flag on process1 so I only see meteor files on node-inspector and could not find my code.
Can someone check this on Windows and Mac machine?
In Meteor 0.5.4 this has become a lot easier:
First run the following commands from the terminal:
npm install -g node-inspector
node-inspector &
export NODE_OPTIONS='--debug-brk'
meteor
And then open http://localhost:8080 in your browser to view the node-inspector console.
Update
Since Meteor 1.0 you can just type
meteor debug
which is essentially a shortcut for the above commands, and then launch node inspector in your browser as mentioned.
Update
In Meteor 1.0.2 a console or shell has been added. It may come in handy to output variables and run commands on the server:
meteor shell
Meteor apps are Node.js apps. When running a Meteor app with the meteor [run] command, you can configure the NODE_OPTIONS environment variable to start node in debug mode.
Examples of NODE_OPTIONS environment variable values:
--debug
--debug=47977 - specify a port
--debug-brk - break on the first statement
--debug-brk=5858 - specify a port and break on the first statement
If you export NODE_OPTIONS=--debug, all meteor command run from the same shell will inherit the environment variable. Alternatively, you can enable debugging just for one run, with NODE_OPTIONS="--debug=47977" meteor.
To debug, run node-inspector in a different shell, then go to http://localhost:8080/debug?port=<the port you specified in NODE_OPTIONS>, regardless of what node-inspector tells you to run.
To start node.js in debug mode, I did it this way:
open /usr/lib/meteor/app/meteor/run.js
before
nodeOptions.push(path.join(options.bundlePath, 'main.js'));
add
nodeOptions.push('--debug');
Here are additional practical steps for your to attach debugger eclipse:
use '--debug-brk' instead of '--debug' here, because it's easier for me to attach node.js using eclipse as debugger.
add 'debugger;' in the code where you want to debug.(I prefer this way personally)
run meteor in console
attach to node.js in eclipse(V8 tools, attach to localhost:5858)
run, wait for debugger to be hit
when you start meteor in your meteor app folder, you'll see that "debugger listening on port 5858" in console.
On Meteor 1.0.3.1 (update to Sergey.Simonchik answer)
Start your server with meteor run --debug-port=<port-number>
Point browser to http://localhost:6222/debug?port=<port-number>
Where <port-number> is a port you specify.
In your code add a debugger; where you want to set your break point.
Depending on where debugger; is invoked, it will either break on your client or server browser window with inspector opened.
I like to set breakpoints via a GUI. This way I don't have to remember to remove any debugging code from my app.
This is how I managed to do it server side for my local meteor app:
meteor debug
start your app this way.
Open Chrome to the address it gives you. You MAY need to install https://github.com/node-inspector/node-inspector (it might come bundled with Meteor now? not sure)
You'll see some weird internal meteor code (not the app code you wrote). Press play to run the code. This code simply starts up your server to listen for connections.
Only after you press play you'll see a new directory in your debugger folder structure called "app". In there are your meteor project files. Set a breakpoint in there one the line you want.
Open the local address of your app. This will run your server side code and you you should be able to hit your breakpoint!
Note: you have to reopen the inspector and go through this process again each time your app restarts!
As of Meteor 1.0.2 probably the best way for server-side debugging is directly via the new built-in shell: with running server run meteor shell. More info here: https://www.meteor.com/blog/2014/12/19/meteor-102-meteor-shell
I am not sure why it was not working for you.
I am able to use it by following steps on console (Mac).
$ ps
$ kill -s USR1 *meteor_node_process_id*
$ node-inspector &
Above steps are mentioned on https://github.com/dannycoates/node-inspector. It is for attaching node-inspector to running node process.
I wrote a small meteor package called meteor-inspector which simplifies the use of node-inspector to debug meteor apps. It internally manages the lifecycle of node-inspector and hence, the user does not need to restart the debugger manually after some files have changed.
For more details and concrete usage instructions take a look at https://github.com/broth-eu/meteor-inspector.
for meteor 1.3.5.2, run
meteor debug --debug-port 5858+n
n is a non-zero number, this will cause node-inspector use 8080+n as web port.
WebStorm, the powerful IDE free for open source developers, makes it much easier to debug server-side.
I've tested it on Windows, and the configuration was painless - see my answer.
A inspector that solve my issues is meteor server console. Here is the process I followed to install it:
In your project folder, add the smart package server-eval:
mrt add server-eval
For Meteor 1.0:
meteor add gandev:server-eval
Restart meteor.
Download crx Chrome extension file from here.
Open extensions page in Chrome and drag crx file to extensions page.
Restart Chrome.
Check the web inspector out to eval server side code:
In comparison with node-inspector, I have a clearer output.
If you prefer to use nodeJS' official debugger you can call NODE_OPTIONS='--debug' meteor and then (on a different shell) node debug localhost:5858.