Jira (PUP-7406) Add kind assert in custom data types?

Title: Message Title

Francois Lafont created an issue

PUP-7406

Hi,

It could be handy to be able to add some "assert" in custom data types. For instance in mymodule/types/vlan.pp something like that:

type Mymodule::Vlan = Struct[{

  'name'                 => String[1],

  'id'                   => Integer[1],

  Optional['http_proxy'] => String[1],

  Optional['apt_mirror'] => Struct[{

    'address'        => String[1],

    'proxy_required' => Boolean, # For instance, if the APT mirror is local, no proxy

                                 # is required and we can set this boolean to false.

}],

}]

# For instance, we don't accept this structure because a

# proxy is required to retrieve the APT mirror but no HTTP

# proxy is defined in this VLAN (no 'http_proxy' key).

#   $vlan = {

#     'name'       => 'adm',

#     'id'         => 1000,

#     'apt_mirror' => {

#       'address'        => 'http://apt.domain.tld',

#       'proxy_required' => true

#   }

$msg = @("END"/L)

  A APT mirror is defined with a required proxy \

  but there is no HTTP proxy defined in your VLAN.

|-END

# The variable is checked.

$msg.assert |$var| {

  $not_valid_case = $var.dig('apt_mirror', 'proxy_required') and !('http_proxy' in $var);

  !$not_valid_case

# Another assert etc...

Of course, it's just a imaginary code, I have no idea what could be a relevant syntax.

It's just a suggestion, feel free to close the ticket if you think it's not a good idea and/or not possible.

Regards.

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