Revision adc46059 snf-cyclades-app/synnefo/api/util.py

b/snf-cyclades-app/synnefo/api/util.py
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from synnefo.db.models import (Flavor, VirtualMachine, VirtualMachineMetadata,
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                               Network, BackendNetwork, NetworkInterface,
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                               BridgePoolTable, MacPrefixPoolTable)
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from synnefo.db.pools import EmptyPool
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from synnefo.lib.astakos import get_user


  		





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from synnefo.plankton.backend import ImageBackend


  		





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    return cidr_block <= 29 and cidr_block > MAX_CIDR_BLOCK


  		





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def allocate_public_address(backend):


  		





  
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    """Allocate a public IP for a vm."""


  		





  
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    for network in backend_public_networks(backend):


  		





  
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        try:


  		





  
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            address = get_network_free_address(network)


  		





  
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            return (network, address)


  		





  
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        except EmptyPool:


  		





  
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            pass


  		





  
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    return (None, None)


  		





  
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def backend_public_networks(backend):


  		





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    """Return available public networks of the backend.


  		





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