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Viewing changes to hooks/charmhelpers/contrib/openstack/neutron.py

  • Committer: James Page
  • Date: 2014-04-01 14:45:26 UTC
  • mfrom: (12.40.22 keystone)
  • Revision ID: james.page@canonical.com-20140401144526-vd8mrq450p5i5ns5
Merge icehouse branch

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hooks/charmhelpers/contrib/openstack/neutron.py
 
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# Various utilies for dealing with Neutron and the renaming from Quantum.
 
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from subprocess import check_output
 
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from charmhelpers.core.hookenv import (
 
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    config,
 
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    log,
 
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    ERROR,
 
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)
 
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from charmhelpers.contrib.openstack.utils import os_release
 
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def headers_package():
 
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    """Ensures correct linux-headers for running kernel are installed,
 
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    for building DKMS package"""
 
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    kver = check_output(['uname', '-r']).strip()
 
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    return 'linux-headers-%s' % kver
 
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QUANTUM_CONF_DIR = '/etc/quantum'
 
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def kernel_version():
 
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    """ Retrieve the current major kernel version as a tuple e.g. (3, 13) """
 
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    kver = check_output(['uname', '-r']).strip()
 
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    kver = kver.split('.')
 
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    return (int(kver[0]), int(kver[1]))
 
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def determine_dkms_package():
 
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    """ Determine which DKMS package should be used based on kernel version """
 
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    # NOTE: 3.13 kernels have support for GRE and VXLAN native
 
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    if kernel_version() >= (3, 13):
 
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        return []
 
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    else:
 
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        return ['openvswitch-datapath-dkms']
 
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# legacy
 
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def quantum_plugins():
 
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    from charmhelpers.contrib.openstack import context
 
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    return {
 
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        'ovs': {
 
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            'config': '/etc/quantum/plugins/openvswitch/'
 
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                      'ovs_quantum_plugin.ini',
 
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            'driver': 'quantum.plugins.openvswitch.ovs_quantum_plugin.'
 
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                      'OVSQuantumPluginV2',
 
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            'contexts': [
 
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                context.SharedDBContext(user=config('neutron-database-user'),
 
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                                        database=config('neutron-database'),
 
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                                        relation_prefix='neutron',
 
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                                        ssl_dir=QUANTUM_CONF_DIR)],
 
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            'services': ['quantum-plugin-openvswitch-agent'],
 
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            'packages': [[headers_package()] + determine_dkms_package(),
 
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                         ['quantum-plugin-openvswitch-agent']],
 
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            'server_packages': ['quantum-server',
 
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                                'quantum-plugin-openvswitch'],
 
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            'server_services': ['quantum-server']
 
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        },
 
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        'nvp': {
 
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            'config': '/etc/quantum/plugins/nicira/nvp.ini',
 
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            'driver': 'quantum.plugins.nicira.nicira_nvp_plugin.'
 
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                      'QuantumPlugin.NvpPluginV2',
 
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            'contexts': [
 
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                context.SharedDBContext(user=config('neutron-database-user'),
 
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                                        database=config('neutron-database'),
 
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                                        relation_prefix='neutron',
 
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                                        ssl_dir=QUANTUM_CONF_DIR)],
 
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            'services': [],
 
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            'packages': [],
 
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            'server_packages': ['quantum-server',
 
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                                'quantum-plugin-nicira'],
 
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            'server_services': ['quantum-server']
 
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        }
 
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    }
 
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NEUTRON_CONF_DIR = '/etc/neutron'
 
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def neutron_plugins():
 
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    from charmhelpers.contrib.openstack import context
 
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    release = os_release('nova-common')
 
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    plugins = {
 
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        'ovs': {
 
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            'config': '/etc/neutron/plugins/openvswitch/'
 
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                      'ovs_neutron_plugin.ini',
 
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            'driver': 'neutron.plugins.openvswitch.ovs_neutron_plugin.'
 
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                      'OVSNeutronPluginV2',
 
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            'contexts': [
 
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                context.SharedDBContext(user=config('neutron-database-user'),
 
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                                        database=config('neutron-database'),
 
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                                        relation_prefix='neutron',
 
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                                        ssl_dir=NEUTRON_CONF_DIR)],
 
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            'services': ['neutron-plugin-openvswitch-agent'],
 
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            'packages': [[headers_package()] + determine_dkms_package(),
 
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                         ['neutron-plugin-openvswitch-agent']],
 
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            'server_packages': ['neutron-server',
 
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                                'neutron-plugin-openvswitch'],
 
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            'server_services': ['neutron-server']
 
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        },
 
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        'nvp': {
 
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            'config': '/etc/neutron/plugins/nicira/nvp.ini',
 
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            'driver': 'neutron.plugins.nicira.nicira_nvp_plugin.'
 
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                      'NeutronPlugin.NvpPluginV2',
 
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            'contexts': [
 
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                context.SharedDBContext(user=config('neutron-database-user'),
 
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                                        database=config('neutron-database'),
 
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                                        relation_prefix='neutron',
 
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                                        ssl_dir=NEUTRON_CONF_DIR)],
 
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            'services': [],
 
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            'packages': [],
 
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            'server_packages': ['neutron-server',
 
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                                'neutron-plugin-nicira'],
 
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            'server_services': ['neutron-server']
 
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        }
 
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    }
 
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    # NOTE: patch in ml2 plugin for icehouse onwards
 
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    if release >= 'icehouse':
 
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        plugins['ovs']['config'] = '/etc/neutron/plugins/ml2/ml2_conf.ini'
 
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        plugins['ovs']['driver'] = 'neutron.plugins.ml2.plugin.Ml2Plugin'
 
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        plugins['ovs']['server_packages'] = ['neutron-server',
 
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                                             'neutron-plugin-ml2']
 
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    return plugins
 
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def neutron_plugin_attribute(plugin, attr, net_manager=None):
 
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    manager = net_manager or network_manager()
 
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    if manager == 'quantum':
 
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        plugins = quantum_plugins()
 
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    elif manager == 'neutron':
 
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        plugins = neutron_plugins()
 
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    else:
 
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        log('Error: Network manager does not support plugins.')
 
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        raise Exception
 
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    try:
 
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        _plugin = plugins[plugin]
 
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    except KeyError:
 
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        log('Unrecognised plugin for %s: %s' % (manager, plugin), level=ERROR)
 
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        raise Exception
 
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    try:
 
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        return _plugin[attr]
 
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    except KeyError:
 
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        return None
 
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def network_manager():
 
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    '''
 
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    Deals with the renaming of Quantum to Neutron in H and any situations
 
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    that require compatability (eg, deploying H with network-manager=quantum,
 
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    upgrading from G).
 
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    '''
 
156
    release = os_release('nova-common')
 
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    manager = config('network-manager').lower()
 
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159
    if manager not in ['quantum', 'neutron']:
 
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        return manager
 
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162
    if release in ['essex']:
 
163
        # E does not support neutron
 
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        log('Neutron networking not supported in Essex.', level=ERROR)
 
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        raise Exception
 
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    elif release in ['folsom', 'grizzly']:
 
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        # neutron is named quantum in F and G
 
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        return 'quantum'
 
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    else:
 
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        # ensure accurate naming for all releases post-H
 
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        return 'neutron'