The API does a fair number of self tests and locking to assure that the
registered commands are consistent and will work. This does not need
to be done on a production system and adds additional overhead causing
somewhere between a 30 and 50% decrease in performance.
Because makeapi is executed when a build is done ensure that it is
executed in developer mode to ensure that the framework is ok.
ticket 751
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
