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6870551a57
A recent patch has introduced a new state for proxies : unpublished backends. Such backends won't be eligilible for traffic, thus use_backend/default_backend rules which target them won't match and content switching rules processing will continue. This patch defines a new frontend keywords 'force-be-switch'. This keyword allows to ignore unpublished or disabled state. Thus, use_backend/default_backend will match even if the target backend is unpublished or disabled. This is useful to be able to test a backend instance before exposing it outside. This new keyword is converted into a persist rule of new type PERSIST_TYPE_BE_SWITCH, stored in persist_rules list proxy member. This is the only persist rule applicable to frontend side. Prior to this commit, pure frontend proxies persist_rules list were always empty. This new features requires adjustment in process_switching_rules(). Now, when a use_backend/default_backend rule matches with an non eligible backend, frontend persist_rules are inspected to detect if a force-be-switch is present so that the backend may be selected.