# Draft Repository Design

## URL Patterns

All repo URLs for any operating system follow this patterns:

* https://repos.psi.ch/<os>/iso
* https://repos.psi.ch/<os>/tags/<tag>/<repo>
* https://repos.psi.ch/<os>/tags/<tag>/keys;
* https://repos.psi.ch/<os>/snapshots/<tag>/<repo>
* https://repos.psi.ch/<os>/snapshots/<tag>/keys
* https://repos.psi.ch/<os>/latest/<repo>
* https://repos.psi.ch/<os>/latest/keys;

The __<os>__ part is a combination of the __ID__ and __VERSION_ID__ variable inside the standard (see https://stackoverflow.com/questions/47838800/etc-lsb-release-vs-etc-os-release) /etc/os-release file. In some cases the VERSION_ID will be trunkated (especially for RHEL systems)

Example RHEL7 system: 
```
[root]# cat /etc/os-release
[...]
ID="rhel"
VERSION_ID="7.9"
[...]
```
will result in __rhel7__.

Example Ubuntu system:
```
[root]# cat /etc/os-release
[...]
ID=ubuntu
VERSION_ID="22.04"
[...]
```
will result in __ubuntu22.04__.


For os independen firmware images we will have a "repos" like this: 

* https://repos.psi.ch/firmware
* https://repos.psi.ch/firmware/<group>


### Examples 
* https://repos.psi.ch/rhel7/iso
* https://repos.psi.ch/rhel7/tags/<tag>/<repo>
* https://repos.psi.ch/rhel7/tags/<tag>/keys;
* https://repos.psi.ch/rhel7/snapshots/<tag>/<repo>
* https://repos.psi.ch/rhel7/snapshots/<tag>/keys
* https://repos.psi.ch/rhel7/latest/<repo>
* https://repos.psi.ch/rhel7/latest/keys;

----

* https://repos.psi.ch/rhel8/iso
* https://repos.psi.ch/rhel8/tags/<tag>/<repo>
* https://repos.psi.ch/rhel8/tags/<tag>/keys
* https://repos.psi.ch/rhel8/snapshots/<tag>/<repo>
* https://repos.psi.ch/rhel8/snapshots/<tag>/keys
* https://repos.psi.ch/rhel8/latest/<repo>
* https://repos.psi.ch/rhel8/latest/keys

----
* ...
----

* https://repos.psi.ch/firmware/...


## Filesystem Layout

![](draft_repositories_overview_directories.drawio.svg)



## Questions
* One RPM to enable/install supported yum repository
* Where do we provide our own rpm packages - lx-misc (currently pli-misc)
* How to know which systems are using which repos? (via rpm package list / hiera config / ... ?)