I am writing a GWT web application which is supposed to run on Google App Engine. I an working in Eclipse and using the plug-in supplied by Google. Now I was wondering if there is any effective way to count the traffic when testing the application.
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I have a relatively small Java app, which I'd like to move over to the Google App Engine. It runs in the console, with no user input needed after the initial startup. I researched a bit on how to deploy it, but all tutorials seem to focus on Java web apps, when I don't really need that. Is it possible to deploy my app if it's not a web app?
App Engine is probably the wrong GCP platform for you - you'd probably be better served just deploying your jar directly onto a Google Compute Engine node. GAE is pretty explicitly oriented around web applications and you'd need to do a bunch of configuration in order to have it work for your use case.
Does your non-web Java app handle web requests? If not, it seems difficult to imagine that you would be able to reach your deployed app and use it for any purpose, once deployed. Your Java app should be able to handle requests, to make deployment worthwhile, and the deployed app useful.
You may find out about how your app should handle requests by reading the How Requests are Handled documentation page.
I was able to create the basic 'hello world' program.
When I tried to understand the difference between a cloud and a server I learned that Cloud is where you have an access to virtual instance created exclusively for you and you are free to choose and install software of your choice.Why Google App Engine(GAE) is used widely where as tomcat is not used. What are major differences between GAE and Tomcat?
Cloud is Google Cloud Platform at this case. App Engine is just one of their services.
App Engine is a platform to build your apps on top of it. A Platform As A Service or PaaS. It simplifies the process of building a scalable application, and you should use it when you understand what you really need and understand principles of scalable application.
Tomcat is a Java web container, and there're many alternatives. Google App Engine is using Jetty. You could actually use it with Tomcat by using Flexible VM, though it doesn't make much sense.
App Engine is not about web server, it's a set of services that helps you to build a scalable app. It includes Memcache, Datastore, Task Queue, Images API, deployments tools and versioning, CDN for static files, and most important automatic scale.
Actually you aren't limited to App Engine on Google Cloud Platform. There is more traditional service, like own server in the cloud, called Compute Engine. There you can run your Tomcat or anything else.
I am currently developing a web application that gets input from the user using a GUI and generates an XML document out of it. After it is done, I need to upload this app to the Google app engine. I have also heard about Google App Script which will use JavaScript to create GUI based applications.
Will Google app engine support applications developed using Google app Script?
Kindly help me out in that.
Thanks!!
Currently no. Apps written using Google Apps Script run independently of App Engine although both of them run on Google's servers
I'm trying to read a sqlite db from the server side code in my gwt project. It throws AccessControlException. I looked a lot on the web and all solutions seems to be disabling Google App Engine, but when I do this, I can't run my project. I'm new to GWT and I have no idea where it runs when Google App Engine is shut down. I look for possibly this two solutions: Any setting that Google App Engine is set to be able to read any file, or other engine that I run my application on. Thanks
The problem is that Google App Engine (GAE) does not support sqlite (I assume you are reading it using JDBC).
If your intention is to make a GWT project that will not be deployed on GAE, you should create the project disabling this feature from the very beginning, because afterwards its a nightmare as you are experiencing right now.
If your intention is to deploy in GAE, you must use the google's persistence mechanisms (JDO) to store your data. SqlLite is off the table here.
Can I use GAE(Google App Engine) for developing a server for mobile clients? Mobile clients will send data to server every 10 seconds.
I am planning to develop the prototype using GAE and then depending on the results, will decide where to locate the prod server.
And are there any best practices to follow in developing code so that it will have very minimal dependancy with GAE (Can easily port to another environment with minimal code change when required)
thanks.
Ofcourse you can, GAE provides a good way to create a great backend for a mobile app.
about dependencies, you can use a project like django-nonrel, it creates an interface between your code and the API of GAE.