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webvirtcloud/vrtManager/hostdetails.py
2015-02-27 10:53:51 +02:00

75 lines
2.5 KiB
Python

#
# 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")