So I was using CGo for a number crunching web app and it happens that CGo seems faster. Is there any that I can use CGo on Google App Engine Go runtime.
Nope. CGo is not supported yet, and perhaps never will. This is PaaS after all and they need to isolate the platform. But you never know. Perhaps a restricted version.
It is supported on App engine Go 1.11
https://gist.github.com/apstndb/456e47ce0dcca191d967aefed1320b92
I know it is an old question but it is still in top results, so just added for any one searching for it now
Related
We use the Google Cloud Datastore Emulator. It autogenerates indexes.yaml. But as we did with the old Google Plugin for Eclipse, we want to get missing-index messages in the local development environment, and not later in cloud deployment. So, we want the Emulator to use our manually-maintained datastore-indexes.xml
How do we configure the use of a specific datastore-indexes.xml in the Google Cloud Datastore Emulator? I don't see any relevant command-line switches in the help text.
EDIT:
My answer was based on the dev_appserver emulator, not the current one. After running some tests, it appears that the emulator only has endpoints for a subset of the Datastore API methods, and index building (nor export/import for that matter) are available.
Leaving my previous answer to avoid repeated answers with the same wrong info:
_________
According to the docs, if autoGenerate="false" is in your datastore-indexes.xml, the development server should ignore the contents of WEB-INF/appengine-generated/datastore-indexes-auto.xml.
I think this might be what you're looking for, although I have not yet tested it.
I'm starting to build a web/mobile app that is going to be offered as SaaS.
I have seen many cloud options for hosting (Heroku, AWS) but finally decided to go with Google Cloud App Engine.
My back-end will be Java based, and I'm confused about going with the Standard or Flexible Env.
I have read several docs online but still undecided.
Considerations to tackle:
I am not very experienced with Docker and this is my first Saas App.
My app should run perfectly with the offering of the Standard Env.
Migrating from the Standard to the Flex environment seems to bring
some headache.
Would you please help me decide on the way to?
We try to cover the key differences in this doc:
https://cloud.google.com/appengine/docs/the-appengine-environments
To cover your considerations:
You don't need to understand Docker to use flex or standard
If your app can run in Standard - that's great!
Migrating from Standard to Flex is a fair bit of work. We try to cover it here
Read over those docs, and let me know if you have any other questions!
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.
I am looking for a solution for a script language like lua to use with Go application running on GAE. I have found golua and luar projects and planned to use them as the solution.
However, once I ran them on GAE environment, I encountered
"o-app-builder: Failed parsing input: parser: bad import "unsafe" in
github.com/stevedonovan/luar/luar.go"
I was confused but finally found that apparently GAE trimmed unsafe package out for a reason. Since luar and golua need the package, I think I have to find a new solution for this.
Is there any way to use luar and golua on GAE? If it is not possible, are there any alternative script languages that will run on GAE environment?
The just announced Managed VMs will allow you to run App Engine applications on Compute Engine virtual machines. This allows access to the full range of libraries, filesystems and sockets. As of today (April 20th, 2014) Managed VMs are in Limited Preview, so you'll need to fill out the form here to get access.
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!