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Diffstat (limited to 'doc')
| -rw-r--r-- | doc/source/authentication-plugins.rst | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/doc/source/authentication-plugins.rst b/doc/source/authentication-plugins.rst index 5afc0bc..89384a5 100644 --- a/doc/source/authentication-plugins.rst +++ b/doc/source/authentication-plugins.rst @@ -235,3 +235,10 @@ can be retrieved. The most simple example of a plugin is the :py:class:`keystoneclient.auth.token_endpoint.Token` plugin. + +When writing a plugin you should ensure that any fetch operation is thread +safe. A common pattern is for a service to hold a single service authentication +plugin globally and re-use that between all threads. This means that when a +token expires there may be multiple threads that all try to fetch a new plugin +at the same time. It is the responsibility of the plugin to ensure that this +case is handled in a way that still results in correct reauthentication. |