Inconsistency between documentation and validation of appengine-web.xml on whether <min-instances> can be set to 0 for <automatic-scaling> [121463749]

Infeasible

Bug

Status Update

No update yet.

Description

ar...@gmail.com

created issue #1

Dec 24, 2018 04:21PM

Please provide as much information as possible. At least, this should include a description of your issue and steps to reproduce the problem. If possible please provide a summary of what steps or workarounds you have already tried, and any docs or articles you found (un)helpful.

Problem you have encountered:
There is inconsistency between documentation and validation of appengine-web.xml on whether <min-instances> can be set to 0 for <automatic-scaling>.

In appengine-web-xml reference (

https://cloud.google.com/appengine/docs/standard/java/config/appref#scaling_elements_automatic_scaling), it says <min-instances> can be set to zero for <automatic-scaling>:
"Specify a value from 0 to 1000. You can set the parameter to the value 0 to allow scaling to 0 instances to lower costs when no requests are being served. Note that you are charged for the number of instances specified whether they are receiving traffic or not."

In eclipse, validation fails when trying to set <min-instances> to 0 with the following error message:
Multiple annotations found at this line:
- cvc-type.3.1.3: The value '0' of element 'min-instances' is not valid.
- cvc-minInclusive-valid: Value '0' is not facet-valid with respect to minInclusive '1' for type
'positiveInteger'.

What you expected to happen:
Either one should be able to set <min-instances> to 0, or the documentation should not imply this is possible.

Steps to reproduce:
In Eclipse xml editor, add the following to appengine-web.xml and save the file:
<automatic-scaling>
<min-instances>0</min-instances>
</automatic-scaling>

Other information (workarounds you have tried, documentation consulted, etc):

Comments

gs...@google.com <gs...@google.com> #2Dec 24, 2018 08:29PM

Assigned to gs...@google.com.

Aptana Server ? Or something :)

ar...@gmail.com <ar...@gmail.com> #3Dec 31, 2018 01:17PM

[Comment deleted]

gs...@google.com <gs...@google.com> #4Dec 31, 2018 06:11PM

Reassigned to gc...@google.com.

Wouldn't it be possible to use javascript just by going

print '<script> (script here) </script>'

so long as the ContentType header outputted is HTML?

lu...@google.com <lu...@google.com> #5Jan 1, 2019 12:11AM

Reassigned to el...@google.com.

[Comment deleted]

lu...@google.com <lu...@google.com> #6Jan 1, 2019 12:13AM

I'd be interested to hear about something like Aptana, but seems like print '<script>
(script here) </script>' should do all you need.

el...@google.com <el...@google.com> #7Jan 7, 2019 05:52PM

Status: Won't Fix (Infeasible)

Please add server-side Java as a runtime for Google AppEngine.

Rhino (javascript on java) would be a great solution!

el...@google.com <el...@google.com> #8Jan 7, 2019 05:53PM

This issue is entirely about a javascript runtime on the server (if Aptana helps you
visualise that fair enough).

ar...@gmail.com <ar...@gmail.com> #9Jan 15, 2019 10:09AM

JavaScript is a lot better designed than PHP. Google could change the fate of
JavaScript and JavaScript developers by porting GAE to Rhino -- and it would rock!
Vote for Rhino!