X-Git-Url: https://arthur.barton.de/gitweb/?a=blobdiff_plain;f=python.d%2Fpython_modules%2Fbase.py;h=859300ecae8d704d6cdc9bae7f31fffd91982a95;hb=8679670bdbe3c5928ec2e266d9c72e1a758fdf37;hp=70c586f8e411a276b829406cddc75cbcf8a4b7cf;hpb=0dbf554b301b610fd110bff5c1de888cce50f2a1;p=netdata.git diff --git a/python.d/python_modules/base.py b/python.d/python_modules/base.py index 70c586f8..859300ec 100644 --- a/python.d/python_modules/base.py +++ b/python.d/python_modules/base.py @@ -18,19 +18,39 @@ # using ".encode()" in one thread can block other threads as well (only in python2) import time -# import sys import os import socket import select +import threading +import msg +import ssl +from subprocess import Popen, PIPE +from sys import exc_info + +try: + from urlparse import urlparse +except ImportError: + from urllib.parse import urlparse + try: import urllib.request as urllib2 except ImportError: import urllib2 -from subprocess import Popen, PIPE +try: + import MySQLdb + PYMYSQL = True +except ImportError: + try: + import pymysql as MySQLdb + PYMYSQL = True + except ImportError: + PYMYSQL = False -import threading -import msg +try: + PATH = os.getenv('PATH').split(':') +except AttributeError: + PATH = '/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin'.split(':') # class BaseService(threading.Thread): @@ -61,6 +81,7 @@ class SimpleService(threading.Thread): self.__first_run = True self.order = [] self.definitions = {} + self._data_from_check = dict() if configuration is None: self.error("BaseService: no configuration parameters supplied. Cannot create Service.") raise RuntimeError @@ -116,33 +137,21 @@ class SimpleService(threading.Thread): Return value presents exit status of update() :return: boolean """ - t_start = time.time() - timetable = self.timetable + t_start = float(time.time()) chart_name = self.chart_name - # check if it is time to execute job update() function - if timetable['next'] > t_start: - self.debug(chart_name, "will be run in", str(int((timetable['next'] - t_start) * 1000)), "ms") - return True - since_last = int((t_start - timetable['last']) * 1000000) - self.debug(chart_name, - "ready to run, after", str(int((t_start - timetable['last']) * 1000)), - "ms (update_every:", str(timetable['freq'] * 1000), - "ms, latency:", str(int((t_start - timetable['next']) * 1000)), "ms") + since_last = int((t_start - self.timetable['last']) * 1000000) if self.__first_run: since_last = 0 + if not self.update(since_last): self.error("update function failed.") return False - t_end = time.time() - self.timetable['next'] = t_end - (t_end % timetable['freq']) + timetable['freq'] + # draw performance graph - run_time = str(int((t_end - t_start) * 1000)) - # noinspection SqlNoDataSourceInspection + run_time = int((time.time() - t_start) * 1000) print("BEGIN netdata.plugin_pythond_%s %s\nSET run_time = %s\nEND\n" % - (self.chart_name, str(since_last), run_time)) - # sys.stdout.write("BEGIN netdata.plugin_pythond_%s %s\nSET run_time = %s\nEND\n" % - # (self.chart_name, str(since_last), run_time)) + (self.chart_name, str(since_last), str(run_time))) self.debug(chart_name, "updated in", str(run_time), "ms") self.timetable['last'] = t_start @@ -155,23 +164,48 @@ class SimpleService(threading.Thread): Exits when job failed or timed out. :return: None """ - self.timetable['last'] = time.time() + step = float(self.timetable['freq']) + penalty = 0 + self.timetable['last'] = float(time.time() - step) + self.debug("starting data collection - update frequency:", str(step), " retries allowed:", str(self.retries)) while True: # run forever, unless something is wrong + now = float(time.time()) + next = self.timetable['next'] = now - (now % step) + step + penalty + + # it is important to do this in a loop + # sleep() is interruptable + while now < next: + self.debug("sleeping for", str(next - now), "secs to reach frequency of", str(step), "secs, now:", str(now), " next:", str(next), " penalty:", str(penalty)) + time.sleep(next - now) + now = float(time.time()) + + # do the job try: status = self._run_once() except Exception as e: - self.error("Something wrong: ", str(e)) - return - if status: # handle retries if update failed - time.sleep(self.timetable['next'] - time.time()) + status = False + + if status: + # it is good self.retries_left = self.retries + penalty = 0 else: + # it failed self.retries_left -= 1 if self.retries_left <= 0: - self.error("no more retries. Exiting") - return + if penalty == 0: + penalty = float(self.retries * step) / 2 + else: + penalty *= 1.5 + + if penalty > 600: + penalty = 600 + + self.retries_left = self.retries + self.alert("failed to collect data for " + str(self.retries) + " times - increasing penalty to " + str(penalty) + " sec and trying again") + else: - time.sleep(self.timetable['freq']) + self.error("failed to collect data - " + str(self.retries_left) + " retries left - penalty: " + str(penalty) + " sec") # --- CHART --- @@ -307,7 +341,10 @@ class SimpleService(threading.Thread): """ Upload new data to netdata. """ - print(self._data_stream) + try: + print(self._data_stream) + except Exception as e: + msg.fatal('cannot send data to netdata:', str(e)) self._data_stream = "" # --- ERROR HANDLING --- @@ -318,6 +355,12 @@ class SimpleService(threading.Thread): """ msg.error(self.chart_name, *params) + def alert(self, *params): + """ + Show error message on stderr + """ + msg.alert(self.chart_name, *params) + def debug(self, *params): """ Show debug message on stderr @@ -345,18 +388,27 @@ class SimpleService(threading.Thread): :return: boolean """ self.debug("Module", str(self.__module__), "doesn't implement check() function. Using default.") - if self._get_data() is None or len(self._get_data()) == 0: + data = self._get_data() + + if data is None: + self.debug("failed to receive data during check().") + return False + + if len(data) == 0: + self.debug("empty data during check().") return False - else: - return True + + self.debug("successfully received data during check(): '" + str(data) + "'") + return True def create(self): """ Create charts :return: boolean """ - data = self._get_data() + data = self._data_from_check or self._get_data() if data is None: + self.debug("failed to receive data during create().") return False idx = 0 @@ -380,7 +432,7 @@ class SimpleService(threading.Thread): """ data = self._get_data() if data is None: - self.debug("_get_data() returned no data") + self.debug("failed to receive data during update().") return False updated = False @@ -400,101 +452,93 @@ class SimpleService(threading.Thread): return updated + @staticmethod + def find_binary(binary): + try: + if isinstance(binary, str): + binary = os.path.basename(binary) + return next(('/'.join([p, binary]) for p in PATH + if os.path.isfile('/'.join([p, binary])) + and os.access('/'.join([p, binary]), os.X_OK))) + else: + return None + except StopIteration: + return None + class UrlService(SimpleService): - # TODO add support for https connections def __init__(self, configuration=None, name=None): - self.url = "" - self.user = None - self.password = None - self.proxies = {} SimpleService.__init__(self, configuration=configuration, name=name) + self.url = self.configuration.get('url') + self.user = self.configuration.get('user') + self.password = self.configuration.get('pass') + self.ss_cert = self.configuration.get('ss_cert') def __add_openers(self): - # TODO add error handling - self.opener = urllib2.build_opener() - - # Proxy handling - # TODO currently self.proxies isn't parsed from configuration file - # if len(self.proxies) > 0: - # for proxy in self.proxies: - # url = proxy['url'] - # # TODO test this: - # if "user" in proxy and "pass" in proxy: - # if url.lower().startswith('https://'): - # url = 'https://' + proxy['user'] + ':' + proxy['pass'] + '@' + url[8:] - # else: - # url = 'http://' + proxy['user'] + ':' + proxy['pass'] + '@' + url[7:] - # # FIXME move proxy auth to sth like this: - # # passman = urllib2.HTTPPasswordMgrWithDefaultRealm() - # # passman.add_password(None, url, proxy['user'], proxy['password']) - # # opener.add_handler(urllib2.HTTPBasicAuthHandler(passman)) - # - # if url.lower().startswith('https://'): - # opener.add_handler(urllib2.ProxyHandler({'https': url})) - # else: - # opener.add_handler(urllib2.ProxyHandler({'https': url})) + def self_signed_cert(ss_cert): + if ss_cert: + try: + ctx = ssl.create_default_context() + ctx.check_hostname = False + ctx.verify_mode = ssl.CERT_NONE + return urllib2.build_opener(urllib2.HTTPSHandler(context=ctx)) + except AttributeError: + return None + else: + return None + + self.opener = self_signed_cert(self.ss_cert) or urllib2.build_opener() # HTTP Basic Auth - if self.user is not None and self.password is not None: + if self.user and self.password: + url_parse = urlparse(self.url) + top_level_url = '://'.join([url_parse.scheme, url_parse.netloc]) passman = urllib2.HTTPPasswordMgrWithDefaultRealm() - passman.add_password(None, self.url, self.user, self.password) + passman.add_password(None, top_level_url, self.user, self.password) self.opener.add_handler(urllib2.HTTPBasicAuthHandler(passman)) self.debug("Enabling HTTP basic auth") - #urllib2.install_opener(opener) - - def _get_raw_data(self): + def _get_raw_data(self, custom_url=None): """ Get raw data from http request :return: str """ - raw = None + raw_data = None + f = None try: - f = self.opener.open(self.url, timeout=self.update_every * 2) - # f = urllib2.urlopen(self.url, timeout=self.update_every * 2) - except Exception as e: - self.error(str(e)) + f = self.opener.open(custom_url or self.url, timeout=self.update_every * 2) + raw_data = f.read().decode('utf-8', 'ignore') + except Exception as error: + self.error('Url: %s. Error: %s' %(custom_url or self.url, str(error))) return None - - try: - raw = f.read().decode('utf-8') - except Exception as e: - self.error(str(e)) finally: - f.close() - return raw + if f is not None: f.close() + + return raw_data or None def check(self): """ Format configuration data and try to connect to server :return: boolean """ - if self.name is None or self.name == str(None): - self.name = 'local' - self.chart_name += "_" + self.name - else: - self.name = str(self.name) - try: - self.url = str(self.configuration['url']) - except (KeyError, TypeError): - pass - try: - self.user = str(self.configuration['user']) - except (KeyError, TypeError): - pass - try: - self.password = str(self.configuration['pass']) - except (KeyError, TypeError): - pass + if not (self.url and isinstance(self.url, str)): + self.error('URL is not defined or type is not ') + return False self.__add_openers() - test = self._get_data() - if test is None or len(test) == 0: + try: + data = self._get_data() + except Exception as error: + self.error('_get_data() failed. Url: %s. Error: %s' % (self.url, error)) return False - else: + + if isinstance(data, dict) and data: + self._data_from_check = data return True + else: + self.error("_get_data() returned no data or type is not ") + return False class SocketService(SimpleService): @@ -506,8 +550,83 @@ class SocketService(SimpleService): self.unix_socket = None self.request = "" self.__socket_config = None + self.__empty_request = "".encode() SimpleService.__init__(self, configuration=configuration, name=name) + def _socketerror(self, message=None): + if self.unix_socket is not None: + self.error("unix socket '" + self.unix_socket + "':", message) + else: + if self.__socket_config is not None: + af, socktype, proto, canonname, sa = self.__socket_config + self.error("socket to '" + str(sa[0]) + "' port " + str(sa[1]) + ":", message) + else: + self.error("unknown socket:", message) + + def _connect2socket(self, res=None): + """ + Connect to a socket, passing the result of getaddrinfo() + :return: boolean + """ + if res is None: + res = self.__socket_config + if res is None: + self.error("Cannot create socket to 'None':") + return False + + af, socktype, proto, canonname, sa = res + try: + self.debug("creating socket to '" + str(sa[0]) + "', port " + str(sa[1])) + self._sock = socket.socket(af, socktype, proto) + except socket.error as e: + self.error("Failed to create socket to '" + str(sa[0]) + "', port " + str(sa[1]) + ":", str(e)) + self._sock = None + self.__socket_config = None + return False + + try: + self.debug("connecting socket to '" + str(sa[0]) + "', port " + str(sa[1])) + self._sock.connect(sa) + except socket.error as e: + self.error("Failed to connect to '" + str(sa[0]) + "', port " + str(sa[1]) + ":", str(e)) + self._disconnect() + self.__socket_config = None + return False + + self.debug("connected to '" + str(sa[0]) + "', port " + str(sa[1])) + self.__socket_config = res + return True + + def _connect2unixsocket(self): + """ + Connect to a unix socket, given its filename + :return: boolean + """ + if self.unix_socket is None: + self.error("cannot connect to unix socket 'None'") + return False + + try: + self.debug("attempting DGRAM unix socket '" + str(self.unix_socket) + "'") + self._sock = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM) + self._sock.connect(self.unix_socket) + self.debug("connected DGRAM unix socket '" + str(self.unix_socket) + "'") + return True + except socket.error as e: + self.debug("Failed to connect DGRAM unix socket '" + str(self.unix_socket) + "':", str(e)) + + try: + self.debug("attempting STREAM unix socket '" + str(self.unix_socket) + "'") + self._sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM) + self._sock.connect(self.unix_socket) + self.debug("connected STREAM unix socket '" + str(self.unix_socket) + "'") + return True + except socket.error as e: + self.debug("Failed to connect STREAM unix socket '" + str(self.unix_socket) + "':", str(e)) + self.error("Failed to connect to unix socket '" + str(self.unix_socket) + "':", str(e)) + self._sock = None + return False + def _connect(self): """ Recreate socket and connect to it since sockets cannot be reused after closing @@ -515,63 +634,38 @@ class SocketService(SimpleService): :return: """ try: - if self.unix_socket is None: - if self.__socket_config is None: - # establish ipv6 or ipv4 connection. - for res in socket.getaddrinfo(self.host, self.port, socket.AF_UNSPEC, socket.SOCK_STREAM): - try: - # noinspection SpellCheckingInspection - af, socktype, proto, canonname, sa = res - self._sock = socket.socket(af, socktype, proto) - except socket.error as e: - self.debug("Cannot create socket:", str(e)) - self._sock = None - continue - try: - self._sock.connect(sa) - except socket.error as e: - self.debug("Cannot connect to socket:", str(e)) - self._disconnect() - continue - self.__socket_config = res - break - else: - # connect to socket with previously established configuration - try: - af, socktype, proto, canonname, sa = self.__socket_config - self._sock = socket.socket(af, socktype, proto) - self._sock.connect(sa) - except socket.error as e: - self.debug("Cannot create or connect to socket:", str(e)) - self._disconnect() + if self.unix_socket is not None: + self._connect2unixsocket() + else: - # connect to unix socket - try: - self._sock = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM) - self._sock.connect(self.unix_socket) - except socket.error: - self._sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM) - self._sock.connect(self.unix_socket) + if self.__socket_config is not None: + self._connect2socket() + else: + for res in socket.getaddrinfo(self.host, self.port, socket.AF_UNSPEC, socket.SOCK_STREAM): + if self._connect2socket(res): break except Exception as e: - self.error(str(e), - "Cannot create socket with following configuration: host:", str(self.host), - "port:", str(self.port), - "socket:", str(self.unix_socket)) self._sock = None - self._sock.setblocking(0) + self.__socket_config = None + + if self._sock is not None: + self._sock.setblocking(0) + self._sock.settimeout(5) + self.debug("set socket timeout to: " + str(self._sock.gettimeout())) def _disconnect(self): """ Close socket connection :return: """ - try: - self._sock.shutdown(2) # 0 - read, 1 - write, 2 - all - self._sock.close() - except Exception: - pass - self._sock = None + if self._sock is not None: + try: + self.debug("closing socket") + self._sock.shutdown(2) # 0 - read, 1 - write, 2 - all + self._sock.close() + except Exception: + pass + self._sock = None def _send(self): """ @@ -579,15 +673,13 @@ class SocketService(SimpleService): :return: boolean """ # Send request if it is needed - if self.request != "".encode(): + if self.request != self.__empty_request: try: + self.debug("sending request:", str(self.request)) self._sock.send(self.request) except Exception as e: + self._socketerror("error sending request:" + str(e)) self._disconnect() - self.error(str(e), - "used configuration: host:", str(self.host), - "port:", str(self.port), - "socket:", str(self.unix_socket)) return False return True @@ -598,24 +690,28 @@ class SocketService(SimpleService): """ data = "" while True: + self.debug("receiving response") try: - ready_to_read, _, in_error = select.select([self._sock], [], [], 5) + buf = self._sock.recv(4096) except Exception as e: - self.debug("SELECT", str(e)) + self._socketerror("failed to receive response:" + str(e)) self._disconnect() break - if len(ready_to_read) > 0: - buf = self._sock.recv(4096) - if len(buf) == 0 or buf is None: # handle server disconnect - break - data += buf.decode(errors='ignore') - if self._check_raw_data(data): - break - else: - self.error("Socket timed out.") + + if buf is None or len(buf) == 0: # handle server disconnect + if data == "": + self._socketerror("unexpectedly disconnected") + else: + self.debug("server closed the connection") self._disconnect() break + self.debug("received data:", str(buf)) + data += buf.decode('utf-8', 'ignore') + if self._check_raw_data(data): + break + + self.debug("final response:", str(data)) return data def _get_raw_data(self): @@ -625,6 +721,8 @@ class SocketService(SimpleService): """ if self._sock is None: self._connect() + if self._sock is None: + return None # Send request if it is needed if not self._send(): @@ -654,6 +752,7 @@ class SocketService(SimpleService): self.name = "" else: self.name = str(self.name) + try: self.unix_socket = str(self.configuration['socket']) except (KeyError, TypeError): @@ -667,10 +766,12 @@ class SocketService(SimpleService): self.port = int(self.configuration['port']) except (KeyError, TypeError): self.debug("No port specified. Using: '" + str(self.port) + "'") + try: self.request = str(self.configuration['request']) except (KeyError, TypeError): self.debug("No request specified. Using: '" + str(self.request) + "'") + self.request = self.request.encode() def check(self): @@ -724,7 +825,7 @@ class LogService(SimpleService): try: self.log_path = str(self.configuration['path']) except (KeyError, TypeError): - self.error("No path to log specified. Using: '" + self.log_path + "'") + self.info("No path to log specified. Using: '" + self.log_path + "'") if os.access(self.log_path, os.R_OK): return True @@ -741,60 +842,212 @@ class LogService(SimpleService): class ExecutableService(SimpleService): - bad_substrings = ('&', '|', ';', '>', '<') def __init__(self, configuration=None, name=None): - self.command = "" SimpleService.__init__(self, configuration=configuration, name=name) + self.command = None def _get_raw_data(self): """ Get raw data from executed command - :return: str + :return: """ try: p = Popen(self.command, stdout=PIPE, stderr=PIPE) - except Exception as e: - self.error("Executing command", self.command, "resulted in error:", str(e)) + except Exception as error: + self.error("Executing command", self.command, "resulted in error:", str(error)) return None - data = [] + data = list() for line in p.stdout.readlines(): - data.append(str(line.decode())) - - if len(data) == 0: - self.error("No data collected.") - return None + data.append(line.decode()) - return data + return data or None def check(self): """ Parse basic configuration, check if command is whitelisted and is returning values - :return: boolean + :return: """ - if self.name is not None or self.name != str(None): - self.name = "" + # Preference: 1. "command" from configuration file 2. "command" from plugin (if specified) + if 'command' in self.configuration: + self.command = self.configuration['command'] + + # "command" must be: 1.not None 2. type + if not (self.command and isinstance(self.command, str)): + self.error('Command is not defined or command type is not ') + return False + + # Split "command" into: 1. command 2. options + command, opts = self.command.split()[0], self.command.split()[1:] + + # Check for "bad" symbols in options. No pipes, redirects etc. TODO: what is missing? + bad_opts = set(''.join(opts)) & set(['&', '|', ';', '>', '<']) + if bad_opts: + self.error("Bad command argument(s): %s" % bad_opts) + return False + + # Find absolute path ('echo' => '/bin/echo') + if '/' not in command: + command = self.find_binary(command) + if not command: + self.error('Can\'t locate "%s" binary in PATH(%s)' % (self.command, PATH)) + return False + # Check if binary exist and executable else: - self.name = str(self.name) + if not (os.path.isfile(command) and os.access(command, os.X_OK)): + self.error('"%s" is not a file or not executable' % command) + return False + + self.command = [command] + opts if opts else [command] + try: - self.command = str(self.configuration['command']) - except (KeyError, TypeError): - self.error("No command specified. Using: '" + self.command + "'") - command = self.command.split(' ') + data = self._get_data() + except Exception as error: + self.error('_get_data() failed. Command: %s. Error: %s' % (self.command, error)) + return False - for arg in command[1:]: - if any(st in arg for st in self.bad_substrings): - self.error("Bad command argument:" + " ".join(self.command[1:])) - return False - # test command and search for it in /usr/sbin or /sbin when failed - base = command[0].split('/')[-1] - if self._get_raw_data() is None: - for prefix in ['/sbin/', '/usr/sbin/']: - command[0] = prefix + base - if os.path.isfile(command[0]): - break - self.command = command - if self._get_data() is None or len(self._get_data()) == 0: - self.error("Command", self.command, "returned no data") + if isinstance(data, dict) and data: + # We need this for create() method. No reason to execute get_data() again if result is not empty dict() + self._data_from_check = data + return True + else: + self.error("Command", str(self.command), "returned no data") return False - return True + + +class MySQLService(SimpleService): + + def __init__(self, configuration=None, name=None): + SimpleService.__init__(self, configuration=configuration, name=name) + self.__connection = None + self.__conn_properties = dict() + self.extra_conn_properties = dict() + self.__queries = self.configuration.get('queries', dict()) + self.queries = dict() + + def __connect(self): + try: + connection = MySQLdb.connect(connect_timeout=self.update_every, **self.__conn_properties) + except (MySQLdb.MySQLError, TypeError, AttributeError) as error: + return None, str(error) + else: + return connection, None + + def check(self): + def get_connection_properties(conf, extra_conf): + properties = dict() + if 'user' in conf and conf['user']: + properties['user'] = conf['user'] + if 'pass' in conf and conf['pass']: + properties['passwd'] = conf['pass'] + if 'socket' in conf and conf['socket']: + properties['unix_socket'] = conf['socket'] + elif 'host' in conf and conf['host']: + properties['host'] = conf['host'] + properties['port'] = int(conf.get('port', 3306)) + elif 'my.cnf' in conf and conf['my.cnf']: + properties['read_default_file'] = conf['my.cnf'] + if isinstance(extra_conf, dict) and extra_conf: + properties.update(extra_conf) + + return properties or None + + def is_valid_queries_dict(raw_queries, log_error): + """ + :param raw_queries: dict: + :param log_error: function: + :return: dict or None + + raw_queries is valid when: type and not empty after is_valid_query(for all queries) + """ + def is_valid_query(query): + return all([isinstance(query, str), + query.startswith(('SELECT', 'select', 'SHOW', 'show'))]) + + if hasattr(raw_queries, 'keys') and raw_queries: + valid_queries = dict([(n, q) for n, q in raw_queries.items() if is_valid_query(q)]) + bad_queries = set(raw_queries) - set(valid_queries) + + if bad_queries: + log_error('Removed query(s): %s' % bad_queries) + return valid_queries + else: + log_error('Unsupported "queries" format. Must be not empty ') + return None + + if not PYMYSQL: + self.error('MySQLdb or PyMySQL module is needed to use mysql.chart.py plugin') + return False + + # Preference: 1. "queries" from the configuration file 2. "queries" from the module + self.queries = self.__queries or self.queries + # Check if "self.queries" exist, not empty and all queries are in valid format + self.queries = is_valid_queries_dict(self.queries, self.error) + if not self.queries: + return None + + # Get connection properties + self.__conn_properties = get_connection_properties(self.configuration, self.extra_conn_properties) + if not self.__conn_properties: + self.error('Connection properties are missing') + return False + + # Create connection to the database + self.__connection, error = self.__connect() + if error: + self.error('Can\'t establish connection to MySQL: %s' % error) + return False + + try: + data = self._get_data() + except Exception as error: + self.error('_get_data() failed. Error: %s' % error) + return False + + if isinstance(data, dict) and data: + # We need this for create() method + self._data_from_check = data + return True + else: + self.error("_get_data() returned no data or type is not ") + return False + + def _get_raw_data(self, description=None): + """ + Get raw data from MySQL server + :return: dict: fetchall() or (fetchall(), description) + """ + + if not self.__connection: + self.__connection, error = self.__connect() + if error: + return None + + raw_data = dict() + queries = dict(self.queries) + try: + with self.__connection as cursor: + for name, query in queries.items(): + try: + cursor.execute(query) + except (MySQLdb.ProgrammingError, MySQLdb.OperationalError) as error: + if self.__is_error_critical(err_class=exc_info()[0], err_text=str(error)): + raise RuntimeError + self.error('Removed query: %s[%s]. Error: %s' + % (name, query, error)) + self.queries.pop(name) + continue + else: + raw_data[name] = (cursor.fetchall(), cursor.description) if description else cursor.fetchall() + self.__connection.commit() + except (MySQLdb.MySQLError, RuntimeError, TypeError, AttributeError): + self.__connection.close() + self.__connection = None + return None + else: + return raw_data or None + + @staticmethod + def __is_error_critical(err_class, err_text): + return err_class == MySQLdb.OperationalError and all(['denied' not in err_text, + 'Unknown column' not in err_text])