Bases: nova.scheduler.filters.BaseHostFilter
Host Filter to allow simple JSON-based grammar for
selecting hosts.
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commands = {'=': <function _equals at 0x7fca9e9d8c80>, '<': <function _less_than at 0x7fca9e9d8c08>, '>': <function _greater_than at 0x7fca9e9d8b18>, 'not': <function _not at 0x7fca9ea8b398>, 'in': <function _in at 0x7fca9ea8b488>, 'and': <function _and at 0x7fca9ea8b578>, '>=': <function _greater_than_equal at 0x7fca9ea8b410>, '<=': <function _less_than_equal at 0x7fca9ea8b500>, 'or': <function _or at 0x7fca9ea8b230>}
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host_passes(host_state, filter_properties)
Return a list of hosts that can fulfill the requirements
specified in the query.