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authorRob Crittenden <rcritten@redhat.com>2011-01-13 14:29:16 -0500
committerSimo Sorce <ssorce@redhat.com>2011-01-14 14:26:22 -0500
commitc69d8084c17c5d94240bda9447ed9546159608a5 (patch)
treecbb69cb18d98ddea93c0bd1ea1c706026d0fe94e /ipa
parentc94d20cfd8cc1bd8cd8152b19d6807b654286197 (diff)
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Add API version and have server reject incompatible clients.
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
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