This patch changes the way plugins are initialized. Instead of
finalizing all the plugins at once, plugins are finalized only after
they are accessed (currently applies to Command, Object and
Attribute subclasses, only in CLI by default).
This change provides significant performance boost, as only the
plugins that are actually used are finalized.
ticket 1336
This patch contains 2 parts.
The first part is a small utility to create and validate the current
API. To do this it needs to load ipalib which on a fresh system
introduces a few problems, namely that it relies on a python plugin
to set the default encoding to utf8. For our purposes we can skip that.
It is also important that any optional plugins be loadable so the
API can be examined.
The second part is a version exchange between the client and server.
The version has a major and a minor version. The major verion is
updated whenever existing API changes. The minor version is updated when
new API is added. A request will be rejected if either the major versions
don't match or if the client major version is higher than then server
major version (though by implication new API would return a command not
found if allowed to proceed).
To determine the API version of the server from a client use the ping
command.
ticket 584
The changes include:
* Change license blobs in source files to mention GPLv3+ not GPLv2 only
* Add GPLv3+ license text
* Package COPYING not LICENSE as the license blobs (even the old ones)
mention COPYING specifically, it is also more common, I think
https://fedorahosted.org/freeipa/ticket/239
When a Requirement fails we throw an exception including the name of the
field that is missing. To make the command-line friendlier we have a
cli_name defined which may or may not match the LDAP attribute. This can
be confusing if you are using ipalib directly because the attribute name
missing may not match what is actually required (desc vs description is
a good example).
If you use the context 'cli' then it will throw exceptions using cli_name.
If you use any other context it will use the name of the attribute.
ticket 187
Once this is committed we can start the process of renaming errors2 as errors.
I thought that combinig this into one commit would be more difficult to
review.
