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# Copyright 2014 Microsoft Corporation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# Requires Python 2.4+ and Openssl 1.0+
#
import datetime
import json
import os
import platform
import time
import threading
import uuid
import azurelinuxagent.common.conf as conf
import azurelinuxagent.common.utils.fileutil as fileutil
import azurelinuxagent.common.logger as logger
from azurelinuxagent.common.event import add_event, WALAEventOperation
from azurelinuxagent.common.exception import EventError, ProtocolError, OSUtilError
from azurelinuxagent.common.future import ustr
from azurelinuxagent.common.osutil import get_osutil
from azurelinuxagent.common.protocol import get_protocol_util
from azurelinuxagent.common.protocol.restapi import TelemetryEventParam, \
TelemetryEventList, \
TelemetryEvent, \
set_properties
from azurelinuxagent.common.utils.restutil import IOErrorCounter
from azurelinuxagent.common.utils.textutil import parse_doc, findall, find, getattrib
from azurelinuxagent.common.version import DISTRO_NAME, DISTRO_VERSION, \
DISTRO_CODE_NAME, AGENT_LONG_VERSION, \
AGENT_NAME, CURRENT_AGENT, CURRENT_VERSION
def parse_event(data_str):
try:
return parse_json_event(data_str)
except ValueError:
return parse_xml_event(data_str)
def parse_xml_param(param_node):
name = getattrib(param_node, "Name")
value_str = getattrib(param_node, "Value")
attr_type = getattrib(param_node, "T")
value = value_str
if attr_type == 'mt:uint64':
value = int(value_str)
elif attr_type == 'mt:bool':
value = bool(value_str)
elif attr_type == 'mt:float64':
value = float(value_str)
return TelemetryEventParam(name, value)
def parse_xml_event(data_str):
try:
xml_doc = parse_doc(data_str)
event_id = getattrib(find(xml_doc, "Event"), 'id')
provider_id = getattrib(find(xml_doc, "Provider"), 'id')
event = TelemetryEvent(event_id, provider_id)
param_nodes = findall(xml_doc, 'Param')
for param_node in param_nodes:
event.parameters.append(parse_xml_param(param_node))
return event
except Exception as e:
raise ValueError(ustr(e))
def parse_json_event(data_str):
data = json.loads(data_str)
event = TelemetryEvent()
set_properties("TelemetryEvent", event, data)
return event
def get_monitor_handler():
return MonitorHandler()
class MonitorHandler(object):
def __init__(self):
self.osutil = get_osutil()
self.protocol_util = get_protocol_util()
self.sysinfo = []
def run(self):
self.init_sysinfo()
event_thread = threading.Thread(target=self.daemon)
event_thread.setDaemon(True)
event_thread.start()
def init_sysinfo(self):
osversion = "{0}:{1}-{2}-{3}:{4}".format(platform.system(),
DISTRO_NAME,
DISTRO_VERSION,
DISTRO_CODE_NAME,
platform.release())
self.sysinfo.append(TelemetryEventParam("OSVersion", osversion))
self.sysinfo.append(
TelemetryEventParam("GAVersion", CURRENT_AGENT))
try:
ram = self.osutil.get_total_mem()
processors = self.osutil.get_processor_cores()
self.sysinfo.append(TelemetryEventParam("RAM", ram))
self.sysinfo.append(TelemetryEventParam("Processors", processors))
except OSUtilError as e:
logger.warn("Failed to get system info: {0}", e)
try:
protocol = self.protocol_util.get_protocol()
vminfo = protocol.get_vminfo()
self.sysinfo.append(TelemetryEventParam("VMName",
vminfo.vmName))
self.sysinfo.append(TelemetryEventParam("TenantName",
vminfo.tenantName))
self.sysinfo.append(TelemetryEventParam("RoleName",
vminfo.roleName))
self.sysinfo.append(TelemetryEventParam("RoleInstanceName",
vminfo.roleInstanceName))
self.sysinfo.append(TelemetryEventParam("ContainerId",
vminfo.containerId))
except ProtocolError as e:
logger.warn("Failed to get system info: {0}", e)
def collect_event(self, evt_file_name):
try:
logger.verbose("Found event file: {0}", evt_file_name)
with open(evt_file_name, "rb") as evt_file:
# if fail to open or delete the file, throw exception
data_str = evt_file.read().decode("utf-8", 'ignore')
logger.verbose("Processed event file: {0}", evt_file_name)
os.remove(evt_file_name)
return data_str
except IOError as e:
msg = "Failed to process {0}, {1}".format(evt_file_name, e)
raise EventError(msg)
def collect_and_send_events(self):
event_list = TelemetryEventList()
event_dir = os.path.join(conf.get_lib_dir(), "events")
event_files = os.listdir(event_dir)
for event_file in event_files:
if not event_file.endswith(".tld"):
continue
event_file_path = os.path.join(event_dir, event_file)
try:
data_str = self.collect_event(event_file_path)
except EventError as e:
logger.error("{0}", e)
continue
try:
event = parse_event(data_str)
self.add_sysinfo(event)
event_list.events.append(event)
except (ValueError, ProtocolError) as e:
logger.warn("Failed to decode event file: {0}", e)
continue
if len(event_list.events) == 0:
return
try:
protocol = self.protocol_util.get_protocol()
protocol.report_event(event_list)
except ProtocolError as e:
logger.error("{0}", e)
def daemon(self):
period = datetime.timedelta(minutes=30)
protocol = self.protocol_util.get_protocol()
last_heartbeat = datetime.datetime.utcnow() - period
# Create a new identifier on each restart and reset the counter
heartbeat_id = str(uuid.uuid4()).upper()
counter = 0
while True:
if datetime.datetime.utcnow() >= (last_heartbeat + period):
last_heartbeat = datetime.datetime.utcnow()
incarnation = protocol.get_incarnation()
dropped_packets = self.osutil.get_firewall_dropped_packets(
protocol.endpoint)
msg = "{0};{1};{2};{3}".format(
incarnation, counter, heartbeat_id, dropped_packets)
add_event(
name=AGENT_NAME,
version=CURRENT_VERSION,
op=WALAEventOperation.HeartBeat,
is_success=True,
message=msg,
log_event=False)
counter += 1
io_errors = IOErrorCounter.get_and_reset()
hostplugin_errors = io_errors.get("hostplugin")
protocol_errors = io_errors.get("protocol")
other_errors = io_errors.get("other")
if hostplugin_errors > 0 \
or protocol_errors > 0 \
or other_errors > 0:
msg = "hostplugin:{0};protocol:{1};other:{2}"\
.format(hostplugin_errors,
protocol_errors,
other_errors)
add_event(
name=AGENT_NAME,
version=CURRENT_VERSION,
op=WALAEventOperation.HttpErrors,
is_success=True,
message=msg,
log_event=False)
try:
self.collect_and_send_events()
except Exception as e:
logger.warn("Failed to send events: {0}", e)
time.sleep(60)
def add_sysinfo(self, event):
sysinfo_names = [v.name for v in self.sysinfo]
for param in event.parameters:
if param.name in sysinfo_names:
logger.verbose("Remove existing event parameter: [{0}:{1}]",
param.name,
param.value)
event.parameters.remove(param)
event.parameters.extend(self.sysinfo)
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