[Kimchi-devel] [PATCH v5 1/3] Generate libvirt's interface XML definition for vlan tagged bridge

Sheldon shaohef at linux.vnet.ibm.com
Fri Jan 10 04:14:50 UTC 2014


On 01/10/2014 11:53 AM, Mark Wu wrote:
> To support vlan tagged virtual network, kimchi needs create the underlying
> vlan and bridge interface. Libvirt's interface driver can do it with
> a given XML definition. This patch targets to generate the XML according
> to the interface and vlan id.
>
> Signed-off-by: Mark Wu <wudxw at linux.vnet.ibm.com>
> ---
> Changes:
> 	v4->v5:
> 		Add missing dependency of python-lxml
usually we submit a cover-letter to keep track of change log.
>   contrib/DEBIAN/control.in     |  1 +
>   contrib/kimchi.spec.fedora.in |  1 +
>   contrib/kimchi.spec.suse.in   |  1 +
>   docs/README.md                |  6 +++---
>   src/kimchi/networkxml.py      | 19 +++++++++++++++++++
>   tests/test_networkxml.py      | 22 ++++++++++++++++++++++
>   tests/utils.py                |  6 ++++++
>   7 files changed, 53 insertions(+), 3 deletions(-)
>
> diff --git a/contrib/DEBIAN/control.in b/contrib/DEBIAN/control.in
> index eecfb27..271bee4 100644
> --- a/contrib/DEBIAN/control.in
> +++ b/contrib/DEBIAN/control.in
> @@ -18,6 +18,7 @@ Depends: python-cherrypy3 (>= 3.2.0),
>            python-ethtool,
>            sosreport,
>            python-ipaddr,
> +         python-lxml,
>            open-iscsi
>   Build-Depends:
>   Maintainer: Aline Manera <alinefm at br.ibm.com>
> diff --git a/contrib/kimchi.spec.fedora.in b/contrib/kimchi.spec.fedora.in
> index 38c72f1..cc8c298 100644
> --- a/contrib/kimchi.spec.fedora.in
> +++ b/contrib/kimchi.spec.fedora.in
> @@ -24,6 +24,7 @@ Requires:	python-jsonschema >= 1.3.0
>   Requires:	python-ethtool
>   Requires:	sos
>   Requires:	python-ipaddr
> +Requires:	python-lxml
>   Requires:	nfs-utils
>   Requires:	iscsi-initiator-utils
>
> diff --git a/contrib/kimchi.spec.suse.in b/contrib/kimchi.spec.suse.in
> index 7be4984..d1aec7b 100644
> --- a/contrib/kimchi.spec.suse.in
> +++ b/contrib/kimchi.spec.suse.in
> @@ -19,6 +19,7 @@ Requires:	python-psutil >= 0.6.0
>   Requires:	python-jsonschema >= 1.3.0
>   Requires:	python-ethtool
>   Requires:	python-ipaddr
> +Requires:	python-lxml
>   Requires:	nfs-client
>   Requires:	iscsi-initiator-utils
>
> diff --git a/docs/README.md b/docs/README.md
> index e7599ec..1ccea01 100644
> --- a/docs/README.md
> +++ b/docs/README.md
> @@ -37,7 +37,7 @@ Install Dependencies
>                           libvirt libxml2-python python-imaging \
>                           PyPAM m2crypto python-jsonschema rpm-build \
>                           qemu-kvm python-psutil python-ethtool sos \
> -                        python-ipaddr nfs-utils
> +                        python-ipaddr python-lxml nfs-utils
>        # If using RHEL6, install the following additional packages:
>        $ sudo yum install python-unittest2 python-ordereddict
>        # Restart libvirt to allow configuration changes to take effect
> @@ -58,7 +58,7 @@ for more information on how to configure your system to access this repository.
>                              libvirt-bin python-libxml2 python-imaging \
>                              python-pam python-m2crypto python-jsonschema \
>                              qemu-kvm libtool python-psutil python-ethtool \
> -                           sosreport python-ipaddr nfs-common
> +                           sosreport python-ipaddr python-lxml nfs-common
>
>       Packages version requirement:
>           python-jsonschema >= 1.3.0
> @@ -71,7 +71,7 @@ for more information on how to configure your system to access this repository.
>                             libvirt python-libxml2 python-imaging \
>                             python-pam python-M2Crypto python-jsonschema \
>                             rpm-build kvm python-psutil python-ethtool \
> -                          python-ipaddr nfs-client
> +                          python-ipaddr python-lxml nfs-client
>
>       Packages version requirement:
>           python-psutil >= 0.6.0
> diff --git a/src/kimchi/networkxml.py b/src/kimchi/networkxml.py
> index 786cb69..63cb210 100644
> --- a/src/kimchi/networkxml.py
> +++ b/src/kimchi/networkxml.py
> @@ -21,6 +21,10 @@
>   # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
>
>   import ipaddr
> +import lxml.etree as ET
> +
> +
> +from lxml.builder import E
>
>
>   # FIXME, do not support ipv6
> @@ -109,3 +113,18 @@ def to_network_xml(**kwargs):
>       </network>
>       """ % params
>       return xml
> +
> +
> +def create_vlan_tagged_bridge_xml(bridge, interface, vlan_id):
> +    vlan = E.vlan(E.interface(name=interface))
> +    vlan.set('tag', vlan_id)
> +    m = E.interface(
> +        E.start(mode='onboot'),
> +        E.bridge(
> +            E.interface(
> +                vlan,
> +                type='vlan',
> +                name='.'.join([interface, vlan_id]))),
> +        type='bridge',
> +        name=bridge)
> +    return ET.tostring(m)
> diff --git a/tests/test_networkxml.py b/tests/test_networkxml.py
> index 3073bce..42b3ea9 100644
> --- a/tests/test_networkxml.py
> +++ b/tests/test_networkxml.py
> @@ -25,6 +25,9 @@ import unittest
>
>
>   import kimchi.networkxml as nxml
> +import utils
> +
> +
>   from kimchi.xmlutils import xpath_get_text
>
>
> @@ -151,3 +154,22 @@ class NetworkXmlTests(unittest.TestCase):
>           netmask = xpath_get_text(xml, "/network/ip/@netmask")[0]
>           self.assertEquals(netmask,
>                             str(ipaddr.IPNetwork(params["net"]).netmask))
> +
> +
> +class InterfaceXmlTests(unittest.TestCase):
> +
> +    def test_vlan_tagged_bridge_no_ip(self):
> +        expected_xml = """
> +            <interface type='bridge' name='br10'>
> +                <start mode='onboot'/>
> +                <bridge>
> +                    <interface type='vlan' name='em1.10'>
> +                      <vlan tag='10'>
> +                        <interface name='em1'/>
> +                      </vlan>
> +                    </interface>
> +              </bridge>
> +            </interface>
> +            """
> +        actual_xml = nxml.create_vlan_tagged_bridge_xml('br10', 'em1', '10')
> +        self.assertEquals(actual_xml, utils.normalize_xml(expected_xml))
> diff --git a/tests/utils.py b/tests/utils.py
> index 008f668..79fc2e2 100644
> --- a/tests/utils.py
> +++ b/tests/utils.py
> @@ -32,6 +32,7 @@ import unittest
>
>
>   from contextlib import closing
> +from lxml import etree
>
>
>   import kimchi.server
> @@ -159,3 +160,8 @@ def patch_auth():
>
>       import kimchi.auth
>       kimchi.auth.authenticate = _authenticate
> +
> +
> +def normalize_xml(xml_str):
> +    return etree.tostring(etree.fromstring(xml_str,
> +                          etree.XMLParser(remove_blank_text=True)))


-- 
Thanks and best regards!

Sheldon Feng(冯少合)<shaohef at linux.vnet.ibm.com>
IBM Linux Technology Center




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