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Ungleich Hosting WebApp Specification
=====================================

Author: Raul Ascencio
Contact: raul.ascencio@ungleich.ch
Version: 0.1
Date: 2015-06-11
Copyright © ungleich GmbH 2017

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Terms
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User
    The end-user, person/entity who books/use one or more vm's.

Ungleich
    The company agents/users the creators and admins ofr the ungleich hosting
    webapp.

--------
Overview
--------

Ungleich hosting is a Plataform as  a Service (PaaS) for multiple application
stack, offers multiple languages (ruby, python, javascript {node,io}.js),
application servers and databases.

Ungleich hosting let the user focus on being more productive, without having
to worry about the complexities of maintaining a production enviroment.

**This spec is not complete**, in fact it hasn't even be reviewed once, it
probably needs a couple of revisions to be accepted.

What the ungleich plataform offers:

- Stack management.
- Monitoring and alerting.
- High availability.
- Automatic aplication deployment.
- Ready to use stacks.
- Automated Management.
- User Access Management [?].
- Production Ready Services (Postgresql, Memcached, Redis...).
- Backups and redundancy.
- Full management and support for stack-related issues [?]

Avilable stacks:

**Ruby Stack**

- Load balancers:
  - HAProxy
- Frameworks:
  - Ruby on Rails
  - ...
- Web Servers:
  - NGINX
  - ...
- Application Servers:
  - Unicorn
  - Passenger
  - Puma [?]
- Databases:
  - Postgresql
  - Mysql [?]
  - Mongodb [?]
- Caching:
  - Memcached [?]
  - Redis (people often use it for other things and it's nice to have) [?]
- Misc:
  - Preinstalled gems (sidekiq/resque, )

**Python Stack**

- << Inserts Ruby Stack and replace:
- Application Servers:
  - Gunicorn
  - uWSGI
- Frameworks:
  - Django
  - ...
- Misc:
  - Celery/Gearman
  - ...

**Node Stack**

- << Inserts Ruby Stack and replace:
- Frameworks:
  - Express
  - Meteor
  - Hoodie
- Databases:
  - ...
  - Couchdb (Hoodie)
- Misc:
  - npm
  - pm2
  - browserify/requirejs/webpack
  - ...

Brief summary of how it works:

1. The *User* goes to an Ungleich Hosting website to register.
2. Once logged in, the *User* get asked for his/her billing information to start
   booking machines.
3. After the *User* inserts a 'valid' credit card he books a VM.
4. When a VM is booked the *User* is subscribed to a 'plan' that it's related
   with the VM specs.
   a. User can be asked for a public SSH key, this key can be used to access
   to the server.
5. The subscription gets confirmed, *Ugleich* deploy the requested infrastructure
   and stack.
6. *User* is notified that the new VM is ready to use.
7. The *User* access the new VM and deploys the Application.

-----------------------
Ungleich Hosting - Goal
-----------------------

    As ungleich, we want to offer "Application Hosting" - pre-configured VMs plus
    support for the technologies running on them, the VMs should be "clickable"
    as in self service mid term.

--------------------------
Ungleich Hosting - Phase 0
--------------------------

This phase will deliver a fully functional webpage for railshosting, without the
capabilities of the 'ungleich hosting app', except from selecting an stack
ordering it by email and the user being subscribed to a plan (billing).
This phase will

Where this phase come from:

    + ...for the moment, it is enough if we generate a mail for every order
    + get rails-hosting.ch running so that somebody can order a VM including
      payment

*********
Non Goals
*********

+ The VMs should be "clickable" as in self service.
+ End-User interface to manage their VMs.

************
Requirements
************

#. Feature
   Description

1. *Ungleich* provides a service overview page
2. *Ungleich* provides a sign up page for users who want to
   try the private beta of the service
3. *Ungleich* let *Users* upload their public SSHs keys
4. *Users* can subscribe to their choosen hosting plan.
5. Notify *Users* when their VMs are ready.
6. *Users* can access to their VMs using the uploaded SSHs keys.
7. *Users* can view their billing history.
8. *Users* are capable of canceling their plans.
9. *Users* are notified every time a new invoice is sucefully charged.
10. *Users* are notified every time their invoices fail to charge.
11. *Users* can add credit cards to their accounts.
12. *Users* can see a detail of every invoice.
13. *Users* can create multiple VMs.
14. *Users* can choose what SSHs keys will use for every VM.
15. *Users* can see the recent history of access to their VMs [?]
16. *Users* can edit their profiles.
17. *Users* can submit tickets to *Ungleich*
18. *Users* can configure DNS settings.
19. *Ungleich* can see the list of *Users*.
20. *Ungleich* can browse the VMs of all *Users*.
21. *Ungleich* is notified everytime an invoice fail to charge.
22. *Ungleich* provide help pages for every section of the site.

*******
Details
*******

...

--------------------------
Ungleich Hosting - Phase 1
--------------------------

This phase will deliver the foundations for most of the ungleich hosting app capabilities.


    for the moment, it is enough if we generate a mail for every order