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# vim: tabstop=4 shiftwidth=4 softtabstop=4
import grpc
import json
from logging import getLogger
import time
from . import DummyResonse
from . import client_pb2
from . import client_pb2_grpc
def gen_configuration(**kwargs):
configuration = {
'host': kwargs.get('host', 'api.diskprophet.com'),
'user': kwargs.get('user'),
'password': kwargs.get('password'),
'port': kwargs.get('port', 31400),
'mgr_inst': kwargs.get('mgr_inst', None),
'cert_context': kwargs.get('cert_context'),
'ssl_target_name': kwargs.get('ssl_target_name', 'api.diskprophet.com'),
'default_authority': kwargs.get('default_authority', 'api.diskprophet.com')}
return configuration
class GRPcClient(object):
def __init__(self, configuration):
self.auth = None
self.host = configuration.get('host')
self.port = configuration.get('port')
if configuration.get('user') and configuration.get('password'):
self.auth = (
('account', configuration.get('user')),
('password', configuration.get('password')))
self.cert_context = configuration.get('cert_context')
self.ssl_target_name = configuration.get('ssl_target_name')
self.default_authority = configuration.get('default_authority')
self.mgr_inst = configuration.get('mgr_inst')
if self.mgr_inst:
self._logger = self.mgr_inst.log
else:
self._logger = getLogger()
self._client = self._get_channel()
def close(self):
if self._client:
self._client.close()
@staticmethod
def connectivity_update(connectivity):
pass
def _get_channel(self):
try:
creds = grpc.ssl_channel_credentials(
root_certificates=self.cert_context)
channel = \
grpc.secure_channel('{}:{}'.format(
self.host, self.port), creds,
options=(('grpc.ssl_target_name_override', self.ssl_target_name,),
('grpc.default_authority', self.default_authority),))
channel.subscribe(self.connectivity_update, try_to_connect=True)
return channel
except Exception as e:
self._logger.error(
'failed to create connection exception: {}'.format(
';'.join(str(e).split('\n\t'))))
return None
def test_connection(self):
try:
stub_accout = client_pb2_grpc.AccountStub(self._client)
result = stub_accout.AccountHeartbeat(client_pb2.Empty())
self._logger.debug('text connection result: {}'.format(str(result)))
if result and "is alive" in str(result.message):
return True
else:
return False
except Exception as e:
self._logger.error(
'failed to test connection exception: {}'.format(
';'.join(str(e).split('\n\t'))))
return False
def _send_metrics(self, data, measurement):
status_info = dict()
status_info['measurement'] = None
status_info['success_count'] = 0
status_info['failure_count'] = 0
for dp_data in data:
d_measurement = dp_data.measurement
if not d_measurement:
status_info['measurement'] = measurement
else:
status_info['measurement'] = d_measurement
tag_list = []
field_list = []
for name in dp_data.tags:
tag = '{}={}'.format(name, dp_data.tags[name])
tag_list.append(tag)
for name in dp_data.fields:
if dp_data.fields[name] is None:
continue
if isinstance(dp_data.fields[name], str):
field = '{}=\"{}\"'.format(name, dp_data.fields[name])
elif isinstance(dp_data.fields[name], bool):
field = '{}={}'.format(name,
str(dp_data.fields[name]).lower())
elif (isinstance(dp_data.fields[name], int) or
isinstance(dp_data.fields[name], long)):
field = '{}={}i'.format(name, dp_data.fields[name])
else:
field = '{}={}'.format(name, dp_data.fields[name])
field_list.append(field)
data = '{},{} {} {}'.format(
status_info['measurement'],
','.join(tag_list),
','.join(field_list),
int(time.time() * 1000 * 1000 * 1000))
try:
resp = self._send_info(data=[data], measurement=status_info['measurement'])
status_code = resp.status_code
if 200 <= status_code < 300:
self._logger.debug(
'{} send diskprediction api success(ret: {})'.format(
status_info['measurement'], status_code))
status_info['success_count'] += 1
else:
self._logger.error(
'return code: {}, content: {}'.format(
status_code, resp.content))
status_info['failure_count'] += 1
except Exception as e:
status_info['failure_count'] += 1
self._logger.error(str(e))
return status_info
def _send_db_relay(self, data, measurement):
status_info = dict()
status_info['measurement'] = measurement
status_info['success_count'] = 0
status_info['failure_count'] = 0
for dp_data in data:
try:
resp = self._send_info(
data=[dp_data.fields['cmd']], measurement=measurement)
status_code = resp.status_code
if 200 <= status_code < 300:
self._logger.debug(
'{} send diskprediction api success(ret: {})'.format(
measurement, status_code))
status_info['success_count'] += 1
else:
self._logger.error(
'return code: {}, content: {}'.format(
status_code, resp.content))
status_info['failure_count'] += 1
except Exception as e:
status_info['failure_count'] += 1
self._logger.error(str(e))
return status_info
def send_info(self, data, measurement):
"""
:param data: data structure
:param measurement: data measurement class name
:return:
status_info = {
'success_count': <count>,
'failure_count': <count>
}
"""
if measurement == 'db_relay':
return self._send_db_relay(data, measurement)
else:
return self._send_metrics(data, measurement)
def _send_info(self, data, measurement):
resp = DummyResonse()
try:
stub_collection = client_pb2_grpc.CollectionStub(self._client)
if measurement == 'db_relay':
result = stub_collection.PostDBRelay(
client_pb2.PostDBRelayInput(cmds=data), metadata=self.auth)
else:
result = stub_collection.PostMetrics(
client_pb2.PostMetricsInput(points=data), metadata=self.auth)
if result and 'success' in str(result.message).lower():
resp.status_code = 200
resp.content = ''
else:
resp.status_code = 400
resp.content = ';'.join(str(result).split('\n\t'))
self._logger.error(
'failed to send info: {}'.format(resp.content))
except Exception as e:
resp.status_code = 400
resp.content = ';'.join(str(e).split('\n\t'))
self._logger.error(
'failed to send info exception: {}'.format(resp.content))
return resp
def query_info(self, host_domain_id, disk_domain_id, measurement):
resp = DummyResonse()
try:
stub_dp = client_pb2_grpc.DiskprophetStub(self._client)
predicted = stub_dp.DPGetDisksPrediction(
client_pb2.DPGetDisksPredictionInput(
physicalDiskIds=disk_domain_id),
metadata=self.auth)
if predicted and hasattr(predicted, 'data'):
resp.status_code = 200
resp.content = ''
resp_json = json.loads(predicted.data)
rc = resp_json.get('results', [])
if rc:
series = rc[0].get('series', [])
if series:
values = series[0].get('values', [])
if not values:
resp.resp_json = {}
else:
columns = series[0].get('columns', [])
for item in values:
# get prediction key and value from server.
for name, value in zip(columns, item):
# process prediction data
resp.resp_json[name] = value
self._logger.debug("query {}:{} result:{}".format(host_domain_id, disk_domain_id, resp))
return resp
else:
resp.status_code = 400
resp.content = ''
resp.resp_json = {'error': ';'.join(str(predicted).split('\n\t'))}
self._logger.debug("query {}:{} result:{}".format(host_domain_id, disk_domain_id, resp))
return resp
except Exception as e:
resp.status_code = 400
resp.content = ';'.join(str(e).split('\n\t'))
resp.resp_json = {'error': resp.content}
self._logger.debug("query {}:{} result:{}".format(host_domain_id, disk_domain_id, resp))
return resp
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