Revision 47d1d754 snf-cyclades-app/synnefo/logic/allocators/default_allocator.py

b/snf-cyclades-app/synnefo/logic/allocators/default_allocator.py
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# or implied, of GRNET S.A.
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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 allocate(backends, vm):
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    if len(backends) == 1:
......
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    capable_backends = [backend for backend in backends
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                        if vm_fits_in_backend(backend, vm)]
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    log.debug("Capable backends for VM %s: %s", vm, capable_backends)
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    # Since we are conservatively updating backend resources on each
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    # allocation, a backend may actually be able to host a vm (despite
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    # the state of the backend in db)
......
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    backend_scores = [(backend, backend_score(backend, vm))
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                      for backend in capable_backends]
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    log.debug("Backend scores %s", backend_scores)
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    # Pick out the best
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    result = min(backend_scores, key=lambda (b, b_score): b_score)
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    backend = result[0]

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