• Alain Takoudjou's avatar
    Introduce new garbage collector for instances ignored by buildout · a403cff3
    Alain Takoudjou authored
    Buildout cannot request destroy sub instances when it is removed from
    instance parameters by the user. Ex: request a cluster of KVM, with
    kvm1 and kvm2 instances, edit parameters and remove kvm2 in the list.
    Buildout will just ignore that instance and it will be removed only when
    the hosting subscription will be destroyed.
    
                     -- kvm1
    root instance --|
                     -X- kvm2
    
    So when processing a partition, we send to master the list of requested sub
    instance(s). If the previous list was ['kvm1', 'kvm2'], then after remove kvm2
    the list will be ['kvm1'] (for the root instance). Commit this list to the
    master will unlink between root instance and kvm2 (predecessor categorie).
    
    A new alarm will search for unlinked instances: Instance which has no parent,
    and destroy them (also destroy the sub tree).
    a403cff3
slap.py 14.6 KB