[OSGeoLive] Proposing t-rex vector tile server

[Pirmin Kalberer]

Hi all,

Referring to https://trac.osgeo.org/osgeolive/ticket/1881, I'm proposing 
adding t-rex to OSGeo Live.

Description:

- What is its name?

t-rex

- What is the home page URL?

https://t-rex.tileserver.ch/

- Which ​OSI approved Open Source Licence is used?

MIT

- What does the application do and how does it add value to the 
GeoSpatial? stack of software?

t-rex is a standalone vector tile server supporting PostGIS and GDAL 
datasources.

- Does the application make use of OGC standards? Which versions of the 
standards? Client or server? You may wish to add comments about how 
standards are used.

t-rex supports OGC simple feature data (plus ISO curves) and vector tile 
output in OGC WMTS compatible grids.

- What language is it written in?

Rust (https://www.rust-lang.org/)

- Which version of the application should be included in the next 
OSGeo-Live release?

0.9.0


Stability:

- If risk adverse organisations have deployed your application into 
production, it would imply that these organisations have verified the 
stability of your software. Has the application been rolled out to 
production into risk (ideally risk adverse) organisations? Please 
mention some of these organisations?

Known users are a national ornithological institute, real estate 
companies and public transport organisations. There was user feedback at 
FOSS4G conferences from national cadastral and mapping authorities about 
their use of t-rex for creating vector tiles.

- ​Open HUB provides metrics to help assess the health of a project. Eg: 
​http://adhoc.osgeo.osuosl.org/livedvd/docs/en/metrics.html Could you 
please ensure that your project is registered with Open HUB, and Open 
HUB has been updated to reference the correct code repository(s) for 
your project. What is the Open HUB URL for your project?

https://www.openhub.net/p/t-rex-tileserver

- What is the size of the user community? You can often answer this by 
mentioning downloads, or describing a healthy, busy email list?

Download statistics: 
https://www.somsubhra.com/github-release-stats/?username=t-rex-tileserver&repository=t-rex
Total Downloads: 1,440 -  278 hub.docker.com pulls.
Communication is currently limited to Github and personal feedback to 
presentations at conferences.

- What is the size of your developer community?

Main application: 1 main committer, 8 code contributors
Web-UI: 2 main committers
rust-postgis: 2 main committers, 4 code contributors
rust-gdal: 2 main committers, 9 code contributors

- Do you have a bug free, stable release?

Releases since 0.6.0 are considered production ready.

- Please discuss the level of testing that your project has gone through.

There is a built-in test suite which is automatically executed on Travis CI.

- How long has the project has had mature code.

The first public release was 2016-08-17 and version 0.6.0, which is 
considered production ready, was released 2016-11-07.


- OSGeo-Live is targeted at applications that people can use rather than 
libraries. Does the application have a user interface (possibly a 
command line interface) that a user can interact with? (We do make an 
exception for Incubated OSGeo Libraries, and will include Project 
Overviews for these libraries, even if they don't have a user interface.)

t-rex is an application with a command line interface and a built-in 
web-based user interface.


- We give preference to OSGeo Incubated Projects, or Projects which are 
presented at ​FOSS4G conferences. If your project is involved in OSGeo 
Incubation, or has been selected to be presented at FOSS4G, then please 
mention it.

There were t-rex specific FOSS4G presentations and vector tile 
presentations covering t-rex among others.


- With around 50 applications installed on OSGeo-Live, us core packagers 
do not have the time to liaise with every single project email list for 
each OSGeo-Live release. So we require a volunteer (or two) to take 
responsibility for liaising between OSGeo-Live and the project's 
communities. This volunteer will be responsible for ensuring the install 
scripts and English documentation are updated by someone for each 
OSGeo-Live release. Also test that the installed application and 
Quickstart documentation works as expected on release candidate releases 
of OSGeo-Live. Who will act as the project's liaison person.

Pirmin Kalberer

- OSGeo-Live is Ubuntu Linux based. Our installation preference is:
         Install from UbuntuGIS or DebianGIS
         Install .deb files from a PPA
         Write a custom install script

Deb Package for Ubuntu is available.


Installation:

- OSGeo-Live is memory and disk constrained. Can the application run in 
512 Meg of RAM?

Yes.

- How much disk space will be required to install the application and a 
suitable example application?

~13MB for application binary


- We aim to reduce disk space by having all applications make use of a 
common dataset. We encourage applications to make use of the example 
datasets already installed: 
​http://wiki.osgeo.org/wiki/Live_GIS_Add_Project#Example_Datasets If 
another dataset would be more appropriate, please discuss here. Is it 
appropriate, to remove existing demo datasets which may already be 
included in the standard release.

Examples are based on Natural Earth dataset.

- Each OSGeo-Live application requires a Project Overview available 
under a ​CC By and a Quickstart available under a ​CC By-SA license. 
(You may release under a second license as well). Will you produce this?

Yes.

- In past releases, we have included Windows and Mac installers for some 
applications. It is likely we won't have space for these in future 
releases. However, if there is room, would you be wishing to include 
Windows and/or Mac installers?

A Windows installer (MSI) is available. For Mac there is a binary only.


Regards
Pirmin

-- 
Pirmin Kalberer - @implgeo
Sourcepole - http://www.sourcepole.com