A client of mine has asked me to look into moving an app that's using Drools from AWS to Google App Engine. I've done a bit of research, and from some old postings on the net, there seemed to be some problems using Drools on GAE, due to the fact that it does file I/O which is not allowed.
Does anyone know if this has been addressed in a newer version of Drools? I've tried searching, but the only responses I get are fairly old (> 1 year)
As far as I know it will not work out-of-the-box with newest version, did you try it at least? If you have errors we can help you to solve them if we see at least a possibility to make it work.
Cheers
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I have implemented a simple API in Go on Google App Engine Standard using just:
func init() {
http.HandleFunc("/api/v1/resource",submitResource)
}
Nothing special. However I want to port this code to using Cloud Endpoints instead in order to get the better monitoring and diagnostics.
Is it even possible with STANDARD instances or must I move to FLEXIBLE?
I can't find any documentation on this. Nor answers to this seemingly simple question. At the moment I half wish I had chosen Python because its support seems more mature. I chose Go because it seems more appropriate for API-like code because my minimal research suggested Go offered better performance.
If it is possible, are there any pointers to how please?
Only Python and Java are supported on GAE Standard via the Endpoints Frameworks. However, Go is supported on GAE Flexible.
Here is the Go GAE Flexible sample:
https://github.com/GoogleCloudPlatform/golang-samples/tree/master/endpoints/getting-started
After much research and trial and error, the simple answer is "No." - as of Dec 2016.
The longer answer is it's possible if you want to put far too much effort into making up to date libraries of your own. There is basically no support, even in alpha, for the current Google Cloud Endpoints using Go with Google App Engine Standard.
It's possible to run Go+endpoints on GAE Standard environment, however libraries might be outdated now.
Libraries and sample app can be found on github:
https://github.com/GoogleCloudPlatform/go-endpoints
I have successfully deployed "Greetings" as AppEngine SE app, and it works.
Is it possible to auto-deploy to AppEngine when Github receives a new commit? I found a bunch of dead documentation links that suggest it is, however I still have no idea how to set it up. There are some mentions for creating a release pipeline, but I don't see any way to do that in the cloud console anymore.
I've got my code mirroring the GitHub repository already, however I can't figure out how to link this to the deployment pipeline or even how to create a new version. Am I missing something obvious? This seems like it should be incredibly straightforward to do...
The entry on the Google Cloud Platform blog that's supposed to explain how to achieve this is blank. It seems Google quietly killed this feature. Some people have complained that it suddenly stopped working. The only way to do this now is to use Continous Delivery/Integration tools such as Travis CI.
I am using this link to build a simple chat application using GCM, and I found this great feature "Google Cloud Endpoints" which makes things easier. But I am afraid to depend on it as I noticed it is still experimental. Can I trust it or should I use Java Servlets instead?
It is true that the tag 'experimental' is a bit scary. If you are concerned, you could consider holding back a bit until Google IO 2013, which is the middle of May. They often make announcement and introduce new technologies there.
They first announced endpoints at last years' Google IO (in July) and if there any significant changes pending for endoints they would likely announce them at this years'.
If you do start using Endpoints, just for Android, and w/o user authentication, I don't think it would be too hard to revert to using a Servlet instead, if you had to (i.e. due to a change in terms that was off-putting). The user authentication stuff would be harder to replace IMO.
As far as I have used Google Cloud Endpoints they work perfectly. Furthermore many interesting features are already implemented, such as integration with Google Eclipse Plugin and testing through the Google APIs Explorer, even in localhost, using the Development Server.
I understand they're still experimental maybe because they're just a new technology not really thoroughly tested yet and are subject to updates. Anyway I've not found significant bugs so far and you should be able to reuse your endpoints with the sucesive versions that will exist. It doesn't seem to be something that will dissapear in the near future...
This is an older question, but for further references I want to say that my short experience was not so pleasant.
I tried "Mobile Backend App". In the beginning, everything worked fine, but after a few days (without changing anything) I received:
GoogleJsonResponseException 404 Not Found
I sow other posts on stackoverflow and manage to solve it by creating another project. I changed the code and it still worked. But again I had problems I played a bit with the 2 projects, I redeployed and changed the settings (tips found on other posts) and it worked. Now it is no longer working, no matter what I do.
I hope that the problem is specific to this project, but nevertheless it is frustrating.
I'm new to Goole App Engine. I'm struggling to find a way to use Stanford Parser as a backend for a mobile app (iOS, Android). Is it possible to run the Parser as a service in GAE so that the app can send the string in wich the parsing will be done and after the processing, the app gets a JSON with the results?
If yes, any hints or tutorial that you can direct me to?
Thank you.
I can't answer your exact question, but I'm also very interested in this.
Have you tried running the parser locally on iOS or Android? I suspect it would be somewhat slow, but I wonder if it's "tolerably slow" for small sentences. The official page just mentions a 100MB memory minimum, I can't find any mention of a minimum requirement for CPU power.
Here they explain how they run their own online parser:
https://mailman.stanford.edu/pipermail/parser-user/2011-March/000954.html
Since ColdFusion is itself Java-based, I would imagine it's not too much of a stretch to suggest that CFML code could be deployed on Google App Engine.
BlueDragon is a commercial solution for deploying CFML code on Java servers.
It's described in this thread how someone got OpenBD (Blue Dragon) running on App Engine:
OpenBD on Google App Engine for Java
Are there any open source alternatives
that could be used for App Engine?
Railo is another obvious candidate here, and some people appear to be trying to tweak it for use on Google App Engine.
I am putting together some demos that run on Open BlueDragon, which in turn is running on Google App Engine. The list is small at the moment, but eventually it should give you a good idea of what is opssible with OpenBD and GAE.
http://www.brighthub.com/hubfolio/matthew-casperson/blog/archive/2010/05/12/cold-fusion-demos.aspx
Check out
http://www.stax.net/ - Stax networks made by a former Allaire(r)?
Works great, supports coldfusion out of the ..cloud. You download a precompiled source file, put your stuff in, upload it and it all works, no fighting with it.
I know google app engine is quite restrictive, it will involve opening up the source and removing everything that attempts to write to the file system, and changing your database interaction.
You can checkout this thread and group as a resource for Open BlueDragon as well as the wiki. Looks like they have a branch already which is working towards GAE compatibility.
On the Railo side of the CFML open source pond you can reference this article from help compiling Railo on your own from the source.
Joining both of their respective google groups and asking questions should yield fruitful as well.
Good Luck!