[Kimchi-devel] [PATCH V8 6/7] add method to test libvirt api are available

[shaohef at linux.vnet.ibm.com]

From: ShaoHe Feng <shaohef at linux.vnet.ibm.com>

same mechanism with other feature tests.

Signed-off-by: ShaoHe Feng <shaohef at linux.vnet.ibm.com>
Signed-off-by: Royce Lv <lvroyce at linux.vnet.ibm.com>
---
 src/kimchi/config.py.in    | 14 +++++++++++++-
 src/kimchi/featuretests.py | 42 +++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 54 insertions(+), 2 deletions(-)

diff --git a/src/kimchi/config.py.in b/src/kimchi/config.py.in
index f8a645a..bca15ef 100644
--- a/src/kimchi/config.py.in
+++ b/src/kimchi/config.py.in
@@ -26,7 +26,7 @@ import threading
 
 from ConfigParser import SafeConfigParser
 
-
+from kimchi.featuretests import FeatureTests
 from kimchi.xmlutils import xpath_get_text
 
 __version__ = "@kimchiversion@"
@@ -125,6 +125,18 @@ class Paths(object):
 paths = Paths()
 
 
+class LivirtSupportAPI(object):
+    def __init__(self):
+        self.apis = {
+            "meta_element": FeatureTests.libvirt_config_support_metadata()}
+
+    def get_apis(self):
+        return self.apis
+
+
+libvirt_support_apis = LivirtSupportAPI().get_apis()
+
+
 class PluginPaths(Paths):
 
     def __init__(self, name):
diff --git a/src/kimchi/featuretests.py b/src/kimchi/featuretests.py
index b1001ea..956f328 100644
--- a/src/kimchi/featuretests.py
+++ b/src/kimchi/featuretests.py
@@ -23,14 +23,15 @@ import lxml.etree as ET
 import socket
 import subprocess
 import threading
+import uuid
 
 
 from lxml.builder import E
 
 
+from kimchi.rollbackcontext import RollbackContext
 from kimchi.utils import kimchi_log
 
-
 ISO_STREAM_XML = """
 <domain type='kvm'>
   <name>ISO_STREAMING</name>
@@ -53,6 +54,17 @@ ISO_STREAM_XML = """
   </devices>
 </domain>"""
 
+SIMPLE_VM_XML = """
+<domain type='kvm'>
+  <name>%s</name>
+  <uuid>%s</uuid>
+  <memory unit='KiB'>10240</memory>
+  <os>
+    <type arch='x86_64' machine='pc'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+</domain>"""
+
 SCSI_FC_XML = """
 <pool type='scsi'>
   <name>TEST_SCSI_FC_POOL</name>
@@ -175,3 +187,31 @@ class FeatureTests(object):
             pool is None or pool.undefine()
             conn is None or conn.close()
         return True
+
+    @staticmethod
+    def libvirt_config_support_metadata():
+        vm_uuid = uuid.uuid1()
+        vm_name = "kimchi_test_%s" % vm_uuid
+        KIMCHI_META_URL = "https://github.com/kimchi-project/kimchi/metadata/"
+        xml = SIMPLE_VM_XML % (vm_name, vm_uuid)
+        meta_support = False
+        with RollbackContext() as rollback:
+            FeatureTests.disable_screen_error_logging()
+            rollback.prependDefer(FeatureTests.enable_screen_error_logging)
+            conn = libvirt.open('qemu:///system')
+            rollback.prependDefer(conn.close)
+            dom = conn.defineXML(xml)
+            rollback.prependDefer(dom.undefine)
+            try:
+                dom.setMetadata(libvirt.VIR_DOMAIN_METADATA_ELEMENT,
+                                "<metatest/>", "kimchi",
+                                KIMCHI_META_URL + "metatest",
+                                flags=libvirt.VIR_DOMAIN_AFFECT_CURRENT)
+                meta_support = True
+            except libvirt.libvirtError as e:
+                if e.get_error_code() == libvirt.VIR_ERR_ARGUMENT_UNSUPPORTED:
+                    meta_support = False
+                else:
+                    raise
+
+        return meta_support
-- 
1.9.0