class InstanceStatisticTask(base.Task):
"""
This task is responsible for collect instances' statistic data, like disk used,
network traffic info.
"""
def initialize(self):
self.libvirt_util = LibvirtUtil()
def get_statistic_data(self, inst_stats):
instance_data_list = []
#Convert dict to list and merge multiple items
for inst_name, stat in inst_stats.items():
instance_data = dict()
instance_data['name'] = inst_name
instance_data['disk_stats'] = {}
for dev, disk_stat in stat['disk_stats'].items():
instance_data['disk_stats'][dev] = {}
instance_data['disk_stats'][dev]['total'] = disk_stat['total']
instance_data['disk_stats'][dev]['used'] = disk_stat['used']
instance_data_list.append(instance_data)
return instance_data_list
def execute(self):
inst_stats, date = self.libvirt_util.get_all_instance_info()
statistic_data = self.get_statistic_data(inst_stats)
self.report('instance_statistic', statistic_data, date)
class InstancePerformanceTask(base.Task):
"""
This task is responsible for collect instances' performance data.
"""
def initialize(self):
self.libvirt_util = LibvirtUtil()
def get_perf_data(self, inst_stats):
instance_data_list = []
#Convert dict to list and merge multiple items
for inst_name, stat in inst_stats.items():
instance_data = dict()
instance_data['name'] = inst_name
#Hard disk data merge
instance_data['hd_wr_bytes_rate'] = 0
instance_data['hd_rd_bytes_rate'] = 0
for disk, disk_stat in stat['disk_stats'].items():
instance_data['hd_wr_bytes_rate'] += disk_stat['wr_bytes_rate']
instance_data['hd_rd_bytes_rate'] += disk_stat['rd_bytes_rate']
#Network card data merge
instance_data['nic_rx_bytes_rate'] = 0
instance_data['nic_tx_bytes_rate'] = 0
for nic, nic_stat in stat['nic_stats'].items():
instance_data['nic_rx_bytes_rate'] += nic_stat['rx_bytes_rate']
instance_data['nic_tx_bytes_rate'] += nic_stat['tx_bytes_rate']
#Other statistic
instance_data['cpu_used_percent'] = stat['overview']['cpu_percent']
instance_data['ram_mb_used'] = stat['overview']['mem_kb'] / 1024
instance_data_list.append(instance_data)
return instance_data_list
def execute(self):
inst_stats, date = self.libvirt_util.get_all_instance_info()
perf_data = self.get_perf_data(inst_stats)
self.report('instance_perf', perf_data, date)