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Commit ec91e24f by Gregory Nagy
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pep8 conventions

parent 3faa2b8f
Showing with 100 additions and 74 deletions
src/client.py
......@@ -13,6 +13,15 @@ logging.basicConfig()
class Client:
env_config = {
"host": "GRAPHITE_HOST",
"port": "GRAPHITE_PORT",
"amqp_user": "GRAPHITE_AMQP_USER",
"amqp_pass": "GRAPHITE_AMQP_PASSWORD",
"amqp_queue": "GRAPHITE_AMQP_QUEUE",
"amqp_vhost": "GRAPHITE_AMQP_VHOST",
}
def __init__(self, config):
"""
Constructor of the client class that is responsible for handling the
......@@ -29,40 +38,42 @@ class Client:
"""
hostname = socket.gethostname().split('.')
hostname.reverse()
self.name = "circle." + ".".join(hostname)
if os.getenv("GRAPHITE_SERVER_ADDRESS") is "":
print("GRAPHITE_SERVER_ADDRESS cannot be found in environmental "
"variables"
separator = '.'
self.name = 'circle.%(host)s' % {'host': separator.join(hostname)}
self.server_address = str(os.getenv(self.env_config['host']))
self.server_port = int(os.getenv(self.env_config['port']))
self.amqp_user = str(os.getenv(self.env_config['amqp_user']))
self.amqp_pass = str(os.getenv(self.env_config['amqp_pass']))
self.amqp_queue = str(os.getenv(self.env_config['amqp_queue']))
self.amqp_vhost = str(os.getenv(self.env_config['amqp_vhost']))
if self.server_address is "":
print(('%(host)s cannot be found in environmental variables.')
% {'host': self.env_config['host']}
)
self.valid = False
return
if os.getenv("GRAPHITE_SERVER_PORT") is "":
print("GRAPHITE_SERVER_PORT cannot be found in environmental "
"variables. (AMQP standard is: 5672"
if self.server_port is "":
print(('%(port)s cannot be found in environmental variables. ')
% {'port': self.env_config['port']}
)
self.valid = False
return
if os.getenv("GRAPHITE_AMQP_USER") is "" or os.getenv(
"GRAPHITE_AMQP_PASSWORD") is "":
print("GRAPHITE_AMQP_USER or GRAPHITE_AMQP_PASSWORD cannot be "
"found in environmental variables. (AMQP standard is: "
"guest-guest)"
if self.amqp_user is "" or self.amqp_pass is "":
print(('%(user)s or %(pass)s cannot be '
'found in environmental variables.')
% {'user': self.env_config['amqp_user'],
'pass': self.env_config['amqp_pass']}
)
self.valid = False
return
if os.getenv("GRAPHITE_AMQP_QUEUE") is "" or os.getenv(
"GRAPHITE_AMQP_VHOST") is "":
print("GRAPHITE_AMQP_QUEUE or GRAPHITE_AMQP_VHOST cannot be "
"found in environmental variables."
if self.amqp_queue is "" or self.amqp_vhost is "":
print(('%(queue)s or %(vhost)s cannot be '
'found in environmental variables.')
% {'queue': self.env_config['amqp_queue'],
'vhost': self.env_config['amqp_vhost']}
)
self.valid = False
return
self.server_address = str(os.getenv("GRAPHITE_SERVER_ADDRESS"))
self.server_port = int(os.getenv("GRAPHITE_SERVER_PORT"))
self.amqp_user = str(os.getenv("GRAPHITE_AMQP_USER"))
self.amqp_pass = str(os.getenv("GRAPHITE_AMQP_PASSWORD"))
self.amqp_queue = str(os.getenv("GRAPHITE_AMQP_QUEUE"))
self.amqp_vhost = str(os.getenv("GRAPHITE_AMQP_VHOST"))
self.debugMode = config["debugMode"]
self.kvmCPU = int(config["kvmCpuUsage"])
self.kvmMem = int(config["kvmMemoryUsage"])
......@@ -70,7 +81,7 @@ class Client:
self.beat = 1
self.valid = True
def __connect(self):
def connect(self):
"""
This method creates the connection to the queue of the graphite
server using the environmental variables given in the constructor.
......@@ -86,17 +97,17 @@ class Client:
self.channel = self.connection.channel()
return True
except RuntimeError:
print ("[ERROR] Cannot connect to the server. "
"Parameters could be wrong."
print ('[ERROR] Cannot connect to the server. '
'Parameters could be wrong.'
)
return False
except:
print ("[ERROR] Cannot connect to the server. There is no one "
"listening on the other side."
print ('[ERROR] Cannot connect to the server. There is no one '
'listening on the other side.'
)
return False
def __disconnect(self):
def disconnect(self):
"""
Break up the connection to the graphite server. If something went
wrong while disconnecting it simply cut the connection up.
......@@ -105,11 +116,11 @@ class Client:
self.channel.close()
self.connection.close()
except RuntimeError:
print("[ERROR] An error has occured while disconnecting from the "
"server."
print('[ERROR] An error has occured '
'while disconnecting from the server.'
)
def __send(self, message):
def send(self, message):
"""
Send the message given in the parameters given in the message
parameter. This function expects that the graphite server want the
......@@ -121,12 +132,12 @@ class Client:
routing_key='', body="\n".join(message))
return True
except:
print("[ERROR] An error has occured while sending metrics to the "
"server."
print('[ERROR] An error has occured '
'while sending metrics to the server.'
)
return False
def __collectFromNode(self, metricCollectors):
def collect_node(self, metricCollectors):
"""
It harvests the given metrics in the metricCollectors list. This list
should be provided by the collectables modul. It is important that
......@@ -134,15 +145,18 @@ class Client:
"""
metrics = []
for collector in metricCollectors:
if (self.beat % collector[1]) is 0:
stat = collector[0]()
metrics.append((self.name + "." +
stat.name + " %d" % (stat.value)
+ " %d" % (time.time())
))
collector_function = collector[0]
phase = collector[1]
if (self.beat % phase) is 0:
stat = collector_function()
metrics.append(('%(hostname)s.%(name)s %(value)f %(time)d') %
{'hostname': self.name,
'name': stat.name,
'value': stat.value,
'time': time.time()})
return metrics
def __collectFromVMs(self):
def collect_vms(self):
"""
This method is used for fetching the kvm processes running on the
node and using the cmdline parameters calculates different types of
......@@ -154,8 +168,6 @@ class Client:
for entry in procList:
try:
entry_name = entry.name
except psutil._error.NoSuchProcess:
entry_name = ""
if entry_name in "kvm":
cmdLine = entry.as_dict()["cmdline"]
search = [cmd_param_index for cmd_param_index, cmd_param in
......@@ -199,35 +211,37 @@ class Client:
if vm[0] in iname:
metrics.append(
('vm.%(name)s.network.packets_sent_%(interface)s '
'%(data)f %(time)d') % {
'name': vm[0],
'%(data)f %(time)d') %
{'name': vm[0],
'interface': iname,
'time': time.time(),
'data': interfaces_list[iname].packets_sent})
metrics.append(
('vm.%(name)s.network.packets_recv_%(interface)s '
'%(data)f %(time)d') % {
'name': vm[0],
'%(data)f %(time)d') %
{'name': vm[0],
'interface': iname,
'time': time.time(),
'data': interfaces_list[iname].packets_recv})
metrics.append(
('vm.%(name)s.network.bytes_sent_%(interface)s '
'%(data)f %(time)d') % {
'name': vm[0],
'%(data)f %(time)d') %
{'name': vm[0],
'interface': iname,
'time': time.time(),
'data': interfaces_list[iname].bytes_sent})
metrics.append(
('vm.%(name)s.network.bytes_recv_%(interface)s '
'%(data)f %(time)d') % {
'name': vm[0],
'%(data)f %(time)d') %
{'name': vm[0],
'interface': iname,
'time': time.time(),
'data': interfaces_list[iname].bytes_recv})
except psutil.NoSuchProcess:
print('[ERROR LOG] Process lost.')
return metrics
def getMaxFrequency(self, metricCollectors=[]):
def get_frequency(self, metricCollectors=[]):
"""
"""
items = metricCollectors + [["kvmCpuUsage", self.kvmMem], [
......@@ -238,7 +252,7 @@ class Client:
max = item[1]
return max
def startReporting(self, metricCollectors=[]):
def run(self, metricCollectors=[]):
"""
Call this method to start reporting to the server, it needs the
metricCollectors parameter that should be provided by the collectables
......@@ -247,20 +261,20 @@ class Client:
if self.valid is False:
print("[ERROR] The client cannot be started.")
raise RuntimeError
if self.__connect() is False:
if self.connect() is False:
hostdata = self.server_address + ':' + self.server_port
print("[ERROR] An error has occured while connecting to the "
"server on %s."
% (self.server_address + ":" + str(self.server_port)))
"server on %(host)s."
% {'host': hostdata})
else:
print("[SUCCESS] Connection established to %s on port %s. \
Clientname: %s"
% (self.server_address, self.server_port,
self.name))
print('[SUCCESS] Connection established to %(host)s:%(port)s.'
% {'host': self.server_address,
'port': self.server_port})
try:
maxFrequency = self.getMaxFrequency(metricCollectors)
maxFrequency = self.get_frequency(metricCollectors)
while True:
nodeMetrics = self.__collectFromNode(metricCollectors)
vmMetrics = self.__collectFromVMs()
nodeMetrics = self.collect_node(metricCollectors)
vmMetrics = self.collect_vms()
metrics = nodeMetrics + vmMetrics
if self.debugMode == "True":
print(metrics)
......@@ -274,4 +288,4 @@ class Client:
except KeyboardInterrupt:
print("[x] Reporting has stopped by the user. Exiting...")
finally:
self.__disconnect()
self.disconnect()
src/cnfparse.py
import ConfigParser as configparser
import sys
if sys.version_info < (3, 0):
import ConfigParser as configparser
else:
import configparser
def importConf(path_to_file):
def import_conf(path_to_file):
config = configparser.RawConfigParser(allow_no_value=False)
try:
config.read(path_to_file)
params = {}
metrics = {}
params["debugMode"] = config.get("Client", "Debug")
##
## Metrics
##
metrics["cpu.usage"] = int(config.get("Metrics", "cpuUsage"))
metrics["cpu.times"] = int(config.get("Metrics", "cpuTimes"))
metrics["memory.usage"] = int(config.get("Metrics", "memoryUsage"))
......@@ -16,17 +23,23 @@ def importConf(path_to_file):
metrics["system.boot_time"] = int(config.get("Metrics",
"systemBootTime"))
metrics["network"] = int(config.get("Metrics", "dataTraffic"))
##
## Params
##
params["kvmCpuUsage"] = int(config.get("KVM", "cpuUsage"))
params["kvmMemoryUsage"] = int(config.get("KVM", "memoryUsage"))
params["kvmNetworkUsage"] = int(config.get("KVM", "networkUsage"))
except configparser.NoSectionError:
print("Config file contains error! Reason: Missing section.")
print("[ERROR] Config file contains error! "
"Reason: Missing section.")
raise
except configparser.ParsingError:
print("Config file contains error! Reason: Cannot parse.")
print("[ERROR] Config file contains error! "
"Reason: Cannot parse.")
raise
except configparser.MissingSectionHeaderError:
print("Config file contains error! Reason: Missing section-header.")
print("[ERROR] Config file contains error! "
"Reason: Missing section-header.")
raise
return params, metrics
src/collectables.py
......@@ -18,20 +18,19 @@ class collectables:
}
@staticmethod
def listKeys():
def list_keys():
return list(collectables.__collectables.keys())
@staticmethod
def listMetricsToKey(key):
def list_metrics_to_key(key):
return collectables.__collectables[key]
@staticmethod
def listMetricsNameToKey(key):
def list_metrics_name_to_key(key):
return [x.name for x in collectables.__collectables[key]]
@staticmethod
def provide(requests=[]):
#valid_keys = collectables.listKeys()
reqs = []
for requests, value in requests.items():
if value > 0:
......@@ -44,4 +43,4 @@ class collectables:
@staticmethod
def provideAll():
return collectables.provide(collectables.listKeys())
return collectables.provide(collectables.list_keys())
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