vmdriver: adding virtual machine class and network xml dump

miscellaneous/vmdriver/vm.py

+#!/usr/bin/env python
+import lxml.etree as ET
+
+# VM Instance class
+class VMInstance:
+    name = None
+    vcpu = None
+    cpu_share = None
+    memory_max = None
+    network_list = list()
+    disk_list = list()
+    context = dict()
+
+class VMNetwork:
+    ''' Virtual Machine network representing class
+    name            -- network device name
+    mac             -- the MAC address of the quest interface
+    network_type    -- need to be "ethernet" by default
+    model           -- available models in libvirt 
+    QoS             -- CIRCLE QoS class?
+    script          -- Executable network script /bin/true by default
+    '''
+    # Class attributes
+    name = None
+    network_type = None
+    mac = None
+    model = None
+    QoS = None
+    script_exec = '/bin/true'
+    
+    def __init__(self, name, mac, network_type='ethernet', model='virtio', QoS=None):
+        self.name = name
+        self.network_type = network_type
+        self.mac = mac
+        self.model = model
+        self.QoS = QoS 
+    
+    # XML dump
+    def dump_xml(self):
+        xml_top = ET.Element('interface', attrib={'type' : self.network_type})
+        ET.SubElement(xml_top, 'target', attrib={ 'dev' : self.name  })
+        ET.SubElement(xml_top, 'mac', attrib={ 'address' : self.mac  })
+        ET.SubElement(xml_top, 'model', attrib={ 'type' : self.model  })
+        ET.SubElement(xml_top, 'script', attrib={ 'path' : self.script_exec  })
+        return ET.tostring(xml_top, encoding='utf8', method='xml', pretty_print=True)
+
+
+class VMDisk:
+    disk_type = None
+    disk_driver = None
+    source = None
+    target = None
+    
+    
+a = VMNetwork(name="vm-77", mac="010101")
+print a.dump_xml()