Revision f96f60fd snf-cyclades-app/synnefo/logic/allocators/default_allocator.py

b/snf-cyclades-app/synnefo/logic/allocators/default_allocator.py
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from __future__ import division


  		





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import logging


  		





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from synnefo.api.util import backend_public_networks


  		





  
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log = logging.getLogger(__name__)


  		





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def vm_fits_in_backend(backend, vm):


  		





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    return backend.dfree > vm['disk'] and backend.mfree > vm['ram'] and\


  		





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           has_free_ip(backend)


  		





  
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    return backend.dfree > vm['disk'] and backend.mfree > vm['ram']


  		





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def backend_score(backend, flavor):


  		





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    dratio = 1 - (backend.dfree / backend.dtotal)


  		





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    cratio = (backend.pinst_cnt + 1) / (backend.ctotal * 4)


  		





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    return 0.7 * (mratio + dratio) * 0.3 * cratio


  		





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def has_free_ip(backend):


  		





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    """Find if Backend has any free public IP."""


  		





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    for network in backend_public_networks(backend):


  		





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        if not network.get_pool().empty():


  		





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            return True


  		





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    return False


  		












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