[Kimchi-devel] [PATCH] Enable remote libvirtds v2

Aline Manera alinefm at linux.vnet.ibm.com
Wed Oct 8 14:56:38 UTC 2014


Reviewed-by: Aline Manera <alinefm at linux.vnet.ibm.com>

On 10/07/2014 06:33 PM, bbaude at redhat.com wrote:
> From: Brent Baude <bbaude at redhat.com>
>
> v2 patch to remove static qemu assignments which will allow
> a remote livirtd
> ---
>   src/kimchi/config.py.in               |  2 +-
>   src/kimchi/featuretests.py            |  8 ++++----
>   src/kimchi/kvmusertests.py            |  2 +-
>   src/kimchi/model/libvirtconnection.py | 20 +++++++++++++++++---
>   src/kimchi/model/model.py             |  5 +++--
>   src/kimchi/model/networks.py          |  2 +-
>   tests/test_model.py                   | 16 ++++++++--------
>   7 files changed, 35 insertions(+), 20 deletions(-)
>
> diff --git a/src/kimchi/config.py.in b/src/kimchi/config.py.in
> index 91e5f48..6e24d11 100644
> --- a/src/kimchi/config.py.in
> +++ b/src/kimchi/config.py.in
> @@ -62,7 +62,7 @@ def get_version():
>
>   def find_qemu_binary(find_emulator=False):
>       try:
> -        connect = libvirt.open('qemu:///system')
> +        connect = libvirt.open(None)
>       except Exception, e:
>           raise Exception("Unable to get qemu binary location: %s" % e)
>       try:
> diff --git a/src/kimchi/featuretests.py b/src/kimchi/featuretests.py
> index 8964098..b7b482a 100644
> --- a/src/kimchi/featuretests.py
> +++ b/src/kimchi/featuretests.py
> @@ -104,7 +104,7 @@ class FeatureTests(object):
>           conn = None
>           try:
>               FeatureTests.disable_screen_error_logging()
> -            conn = libvirt.open('qemu:///system')
> +            conn = libvirt.open(None)
>               dom = conn.defineXML(xml)
>               dom.undefine()
>               return True
> @@ -122,7 +122,7 @@ class FeatureTests(object):
>               xml = ET.tostring(obj)
>               return xml
>           try:
> -            conn = libvirt.open('qemu:///system')
> +            conn = libvirt.open(None)
>               FeatureTests.disable_screen_error_logging()
>               conn.findStoragePoolSources('netfs', _get_xml(), 0)
>           except libvirt.libvirtError as e:
> @@ -174,7 +174,7 @@ class FeatureTests(object):
>       def libvirt_support_fc_host():
>           try:
>               FeatureTests.disable_screen_error_logging()
> -            conn = libvirt.open('qemu:///system')
> +            conn = libvirt.open(None)
>               pool = None
>               pool = conn.storagePoolDefineXML(SCSI_FC_XML, 0)
>           except libvirt.libvirtError as e:
> @@ -194,7 +194,7 @@ class FeatureTests(object):
>           with RollbackContext() as rollback:
>               FeatureTests.disable_screen_error_logging()
>               rollback.prependDefer(FeatureTests.enable_screen_error_logging)
> -            conn = libvirt.open('qemu:///system')
> +            conn = libvirt.open(None)
>               rollback.prependDefer(conn.close)
>               dom = conn.defineXML(SIMPLE_VM_XML)
>               rollback.prependDefer(dom.undefine)
> diff --git a/src/kimchi/kvmusertests.py b/src/kimchi/kvmusertests.py
> index 1ac2beb..2326727 100644
> --- a/src/kimchi/kvmusertests.py
> +++ b/src/kimchi/kvmusertests.py
> @@ -49,7 +49,7 @@ class UserTests(object):
>
>           xml = cls.SIMPLE_VM_XML % (vm_name, vm_uuid)
>           with RollbackContext() as rollback:
> -            conn = libvirt.open('qemu:///system')
> +            conn = libvirt.open(None)
>               rollback.prependDefer(conn.close)
>               dom = conn.defineXML(xml)
>               rollback.prependDefer(dom.undefine)
> diff --git a/src/kimchi/model/libvirtconnection.py b/src/kimchi/model/libvirtconnection.py
> index 80348a3..4fd2393 100644
> --- a/src/kimchi/model/libvirtconnection.py
> +++ b/src/kimchi/model/libvirtconnection.py
> @@ -93,10 +93,13 @@ class LibvirtConnection(object):
>                       except libvirt.libvirtError:
>                           kimchi_log.error('Unable to connect to libvirt.')
>                           if not retries:
> -                            err = 'Libvirt is not available, exiting.'
> -                            kimchi_log.error(err)
> +                            kimchi_log.error("Unable to establish connection "
> +                                             "with libvirt. Please check "
> +                                             "your libvirt URI which is often "
> +                                             "defined in "
> +                                             "/etc/libvirt/libvirt.conf")
>                               cherrypy.engine.stop()
> -                            raise
> +                            exit(1)
>                       time.sleep(2)
>
>                   for name in dir(libvirt.virConnect):
> @@ -117,3 +120,14 @@ class LibvirtConnection(object):
>                   # However the values need to be considered wisely to not affect
>                   # hosts which are hosting a lot of virtual machines
>               return conn
> +
> +    def isQemuURI(self):
> +        """
> +        This method will return True or Value when the system libvirt
> +        URI is a qemu based URI.  For example:
> +        qemu:///system or qemu+tcp://someipaddress/system
> +        """
> +        if self.get().getURI().startswith('qemu'):
> +            return True
> +        else:
> +            return False
> diff --git a/src/kimchi/model/model.py b/src/kimchi/model/model.py
> index ac70852..566be66 100644
> --- a/src/kimchi/model/model.py
> +++ b/src/kimchi/model/model.py
> @@ -38,12 +38,13 @@ DEFAULT_POOLS = {'default': {'path': '/var/lib/libvirt/images'},
>
>
>   class Model(BaseModel):
> -    def __init__(self, libvirt_uri='qemu:///system', objstore_loc=None):
> +    def __init__(self, libvirt_uri=None, objstore_loc=None):
> +
>           self.objstore = ObjectStore(objstore_loc)
>           self.conn = LibvirtConnection(libvirt_uri)
>           kargs = {'objstore': self.objstore, 'conn': self.conn}
>
> -        if 'qemu:///' in libvirt_uri:
> +        if self.conn.isQemuURI():
>               for pool_name, pool_arg in DEFAULT_POOLS.iteritems():
>                   self._default_pool_check(pool_name, pool_arg)
>
> diff --git a/src/kimchi/model/networks.py b/src/kimchi/model/networks.py
> index 0ea9449..43f9d50 100644
> --- a/src/kimchi/model/networks.py
> +++ b/src/kimchi/model/networks.py
> @@ -41,7 +41,7 @@ KIMCHI_BRIDGE_PREFIX = 'kb'
>   class NetworksModel(object):
>       def __init__(self, **kargs):
>           self.conn = kargs['conn']
> -        if 'qemu:///' in self.conn.get().getURI():
> +        if self.conn.isQemuURI():
>               self._default_network_check()
>
>       def _default_network_check(self):
> diff --git a/tests/test_model.py b/tests/test_model.py
> index 1f2e79c..3bb090e 100644
> --- a/tests/test_model.py
> +++ b/tests/test_model.py
> @@ -457,7 +457,7 @@ class ModelTests(unittest.TestCase):
>
>       @unittest.skipUnless(utils.running_as_root(), 'Must be run as root')
>       def test_storagepool(self):
> -        inst = model.Model('qemu:///system', self.tmp_store)
> +        inst = model.Model(None, self.tmp_store)
>
>           poolDefs = [
>               {'type': 'dir',
> @@ -524,7 +524,7 @@ class ModelTests(unittest.TestCase):
>
>       @unittest.skipUnless(utils.running_as_root(), 'Must be run as root')
>       def test_storagevolume(self):
> -        inst = model.Model('qemu:///system', self.tmp_store)
> +        inst = model.Model(None, self.tmp_store)
>
>           with RollbackContext() as rollback:
>               path = '/tmp/kimchi-images'
> @@ -742,7 +742,7 @@ class ModelTests(unittest.TestCase):
>
>       @unittest.skipUnless(utils.running_as_root(), 'Must be run as root')
>       def test_template_clone(self):
> -        inst = model.Model('qemu:///system',
> +        inst = model.Model(None,
>                              objstore_loc=self.tmp_store)
>           with RollbackContext() as rollback:
>               orig_params = {'name': 'test-template', 'memory': 1024,
> @@ -761,7 +761,7 @@ class ModelTests(unittest.TestCase):
>
>       @unittest.skipUnless(utils.running_as_root(), 'Must be run as root')
>       def test_template_update(self):
> -        inst = model.Model('qemu:///system',
> +        inst = model.Model(None,
>                              objstore_loc=self.tmp_store)
>           with RollbackContext() as rollback:
>               net_name = 'test-network'
> @@ -801,7 +801,7 @@ class ModelTests(unittest.TestCase):
>                                 'new-test', params)
>
>       def test_vm_edit(self):
> -        inst = model.Model('qemu:///system',
> +        inst = model.Model(None,
>                              objstore_loc=self.tmp_store)
>
>           orig_params = {'name': 'test', 'memory': '1024', 'cpus': '1',
> @@ -914,7 +914,7 @@ class ModelTests(unittest.TestCase):
>
>       @unittest.skipUnless(utils.running_as_root(), 'Must be run as root')
>       def test_network(self):
> -        inst = model.Model('qemu:///system', self.tmp_store)
> +        inst = model.Model(None, self.tmp_store)
>
>           with RollbackContext() as rollback:
>
> @@ -1240,7 +1240,7 @@ class ModelTests(unittest.TestCase):
>
>       @unittest.skipUnless(utils.running_as_root(), 'Must be run as root')
>       def test_get_hostinfo(self):
> -        inst = model.Model('qemu:///system',
> +        inst = model.Model(None,
>                              objstore_loc=self.tmp_store)
>           info = inst.host_lookup()
>           distro, version, codename = platform.linux_distribution()
> @@ -1279,7 +1279,7 @@ class ModelTests(unittest.TestCase):
>
>       @unittest.skipUnless(utils.running_as_root(), 'Must be run as root')
>       def test_deep_scan(self):
> -        inst = model.Model('qemu:///system',
> +        inst = model.Model(None,
>                              objstore_loc=self.tmp_store)
>           with RollbackContext() as rollback:
>               path = '/tmp/kimchi-images/tmpdir'




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