[bind10-dev] Enabling the user interface

[Jelte Jansen]

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Shane Kerr wrote:
> 
> The details about the configuration stuff are still unknown. But
> basically it will consist of a hierarchical set of attribute/value
> pairs, as described in Jelte's "configuration experiment" e-mail:
> 
> https://lists.isc.org/pipermail/bind10-dev/2009-September/000099.html
> 

or (let's make it confusing), we could go a more generative way, as described in:

https://lists.isc.org/pipermail/bind10-dev/2009-September/000110.html

i just wrote up a mock-up of what the datamodel specification could look like
(syntax based a bit on yang, but quite a bit easier, even if it is actually
already more complicated than i would prefer)

the config part will contain the data (and transaction/transfer/storage
functions, although i don't know what those will look like yet), one can define
types, which will be separate classes and objects, and enumerations.

basic types would have some possible limitation-settings, depending on their
type, for instance an int could have a minimum and a maximum, and a string could
have a regular expression. In both cases an error could be defined to show when
a value is not accepted.

i'm mostly thinking of generating the classes that contain the data in-memory
this way, but maybe it could probably also serve to generate other interfaces.

virtual chairs may now be thrown

- -------------------
/* namespace for the generated classes */
namespace ISC::AuthModule;

/* yeah yeah regex is incomplete, thinking about making
   internet address a basic type and inlining checks for them */
type address {
    string address {
        must-match
"([0-9]+(\.[0-9]){3})|([0-9a-fA-F]{1-4}(:[[0-9a-fA-F]{1,4}){1,7})";
        error "Does not look like an address";
    };
}

type acl {
    enum permissions { allow-notify, allow-transfer, (etc) };

    address address;
    list[permissions];
}

type zone {
    enum zonetype {
        master, slave
    }

    string name;
    zonetype type;
    string file;
    list[address] masters;
    list[acl] acls;
}

config {
    /* ":attr" in a list type means the interface will have
       direct accessors on that attribute of the type; in
       this case it would be something like
       Zone config.getZone("name") { /*code*/ };
    */
    list[zone:name] zones;

    string version {
        default "BIND 10.0.1";
    };

    int listen-port {
        min 1;
        max 65535;
        error "Port number must be 1-65535";
    }
}
- ----------------------------

Jelte
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