GUI host name field is broken

[Metallion]

Problem

In the GUI, the host name field is broken for two reasons.

• It allows spaces.
• It doesn't send the host name to the Web API.

When launching an instance like this:

The request parameter in the database become this:

mysql> select request_params from instances where id=5\G                                                                                                                                               
*************************** 1. row ***************************
request_params: ---
cpu_cores: 1
display_name: new-inst
host_name: 
...
1 row in set (0.00 sec)

host_name is empty.

Solution

• Add validation to the host name field
• Fix it so the host name does get sent to the Web API.

[Metallion]

I worked on it for a bit in this branch. https://github.com/axsh/wakame-vdc/tree/fix-gui-instance-hostname

Since the web api gets a parameter host_name which is empty, I thought that was the correct parameter and focused on getting it filled in. After getting that done, I noticed that the webapi expects hostname without an underscore. https://github.com/axsh/wakame-vdc/blob/develop/dcmgr/lib/dcmgr/endpoints/12.03/instances.rb#L304-L311

Haven't been able to figure out yet how to make Hijiki send it that way.