Initial commit

vrtManager/hostdetails.py

@@ -0,0 +1,75 @@
+#
+# Copyright (C) 2013 Webvirtmgr.
+#
+import time
+from vrtManager.connection import wvmConnect
+from vrtManager.util import get_xml_path
+
+
+def cpu_version(ctx):
+    for info in ctx.xpathEval('/sysinfo/processor/entry'):
+        elem = info.xpathEval('@name')[0].content
+        if elem == 'version':
+            return info.content
+    return 'Unknown'
+
+
+class wvmHostDetails(wvmConnect):
+    def get_memory_usage(self):
+        """
+        Function return memory usage on node.
+        """
+        get_all_mem = self.wvm.getInfo()[1] * 1048576
+        get_freemem = self.wvm.getMemoryStats(-1, 0)
+        if type(get_freemem) == dict:
+            free = (get_freemem.values()[0] +
+                    get_freemem.values()[2] +
+                    get_freemem.values()[3]) * 1024
+            percent = (100 - ((free * 100) / get_all_mem))
+            usage = (get_all_mem - free)
+            mem_usage = {'usage': usage, 'percent': percent}
+        else:
+            mem_usage = {'usage': None, 'percent': None}
+        return mem_usage
+
+    def get_cpu_usage(self):
+        """
+        Function return cpu usage on node.
+        """
+        prev_idle = 0
+        prev_total = 0
+        cpu = self.wvm.getCPUStats(-1, 0)
+        if type(cpu) == dict:
+            for num in range(2):
+                idle = self.wvm.getCPUStats(-1, 0).values()[1]
+                total = sum(self.wvm.getCPUStats(-1, 0).values())
+                diff_idle = idle - prev_idle
+                diff_total = total - prev_total
+                diff_usage = (1000 * (diff_total - diff_idle) / diff_total + 5) / 10
+                prev_total = total
+                prev_idle = idle
+                if num == 0:
+                    time.sleep(1)
+                else:
+                    if diff_usage < 0:
+                        diff_usage = 0
+        else:
+            return {'usage': None}
+        return {'usage': diff_usage}
+
+    def get_node_info(self):
+        """
+        Function return host server information: hostname, cpu, memory, ...
+        """
+        info = []
+        info.append(self.wvm.getHostname())
+        info.append(self.wvm.getInfo()[0])
+        info.append(self.wvm.getInfo()[1] * 1048576)
+        info.append(self.wvm.getInfo()[2])
+        info.append(get_xml_path(self.wvm.getSysinfo(0), func=cpu_version))
+        info.append(self.wvm.getURI())
+        return info
+
+    def hypervisor_type(self):
+        """Return hypervisor type"""
+        return get_xml_path(self.get_cap_xml(), "/capabilities/guest/arch/domain/@type")