Bases: nova.scheduler.filters.BaseHostFilter
Host Filter to allow simple JSON-based grammar for
selecting hosts.
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commands = {'and': <function _and at 0x1048f1b4>, 'or': <function _or at 0x1048f17c>, '>=': <function _greater_than_equal at 0x1048f10c>, 'in': <function _in at 0x1048f09c>, 'not': <function _not at 0x1048f144>, '<=': <function _less_than_equal at 0x1048f0d4>, '=': <function _equals at 0x1058cfb4>, '<': <function _less_than at 0x1048f02c>, '>': <function _greater_than at 0x1048f064>}
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host_passes(host_state, filter_properties)
Return a list of hosts that can fulfill the requirements
specified in the query.