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authorFederico Ceratto <federico.ceratto@gmail.com>2017-04-30 16:09:37 +0000
committerFederico Ceratto <federico.ceratto@gmail.com>2017-04-30 18:09:45 +0000
commitbed7e5b6a0b9ea0ddfc76c6f77eb91df81b92521 (patch)
tree519e5945ec0db75bfb50583539caa408a5819e87 /python.d/web_log.chart.py
parentTemporarily disable signature checking (diff)
downloadnetdata-bed7e5b6a0b9ea0ddfc76c6f77eb91df81b92521.tar.xz
netdata-bed7e5b6a0b9ea0ddfc76c6f77eb91df81b92521.zip
New upstream version 1.6.0+dfsg
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diff --git a/python.d/web_log.chart.py b/python.d/web_log.chart.py
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+# -*- coding: utf-8 -*-
+# Description: web log netdata python.d module
+# Author: l2isbad
+
+from base import LogService
+import re
+import bisect
+from os import access, R_OK
+from os.path import getsize
+from collections import namedtuple
+from copy import deepcopy
+
+priority = 60000
+retries = 60
+
+ORDER = ['response_statuses', 'response_codes', 'bandwidth', 'response_time', 'requests_per_url', 'http_method',
+ 'http_version', 'requests_per_ipproto', 'clients', 'clients_all']
+CHARTS = {
+ 'response_codes': {
+ 'options': [None, 'Response Codes', 'requests/s', 'responses', 'web_log.response_codes', 'stacked'],
+ 'lines': [
+ ['2xx', '2xx', 'incremental'],
+ ['5xx', '5xx', 'incremental'],
+ ['3xx', '3xx', 'incremental'],
+ ['4xx', '4xx', 'incremental'],
+ ['1xx', '1xx', 'incremental'],
+ ['0xx', 'other', 'incremental'],
+ ['unmatched', 'unmatched', 'incremental']
+ ]},
+ 'bandwidth': {
+ 'options': [None, 'Bandwidth', 'KB/s', 'bandwidth', 'web_log.bandwidth', 'area'],
+ 'lines': [
+ ['resp_length', 'received', 'incremental', 1, 1024],
+ ['bytes_sent', 'sent', 'incremental', -1, 1024]
+ ]},
+ 'response_time': {
+ 'options': [None, 'Processing Time', 'milliseconds', 'timings', 'web_log.response_time', 'area'],
+ 'lines': [
+ ['resp_time_min', 'min', 'incremental', 1, 1000],
+ ['resp_time_max', 'max', 'incremental', 1, 1000],
+ ['resp_time_avg', 'avg', 'incremental', 1, 1000]
+ ]},
+ 'clients': {
+ 'options': [None, 'Current Poll Unique Client IPs', 'unique ips', 'clients', 'web_log.clients', 'stacked'],
+ 'lines': [
+ ['unique_cur_ipv4', 'ipv4', 'incremental', 1, 1],
+ ['unique_cur_ipv6', 'ipv6', 'incremental', 1, 1]
+ ]},
+ 'clients_all': {
+ 'options': [None, 'All Time Unique Client IPs', 'unique ips', 'clients', 'web_log.clients_all', 'stacked'],
+ 'lines': [
+ ['unique_tot_ipv4', 'ipv4', 'absolute', 1, 1],
+ ['unique_tot_ipv6', 'ipv6', 'absolute', 1, 1]
+ ]},
+ 'http_method': {
+ 'options': [None, 'Requests Per HTTP Method', 'requests/s', 'http methods', 'web_log.http_method', 'stacked'],
+ 'lines': [
+ ['GET', 'GET', 'incremental', 1, 1]
+ ]},
+ 'http_version': {
+ 'options': [None, 'Requests Per HTTP Version', 'requests/s', 'http versions',
+ 'web_log.http_version', 'stacked'],
+ 'lines': []},
+ 'requests_per_ipproto': {
+ 'options': [None, 'Requests Per IP Protocol', 'requests/s', 'ip protocols', 'web_log.requests_per_ipproto',
+ 'stacked'],
+ 'lines': [
+ ['req_ipv4', 'ipv4', 'incremental', 1, 1],
+ ['req_ipv6', 'ipv6', 'incremental', 1, 1]
+ ]},
+ 'response_statuses': {
+ 'options': [None, 'Response Statuses', 'requests/s', 'responses', 'web_log.response_statuses',
+ 'stacked'],
+ 'lines': [
+ ['successful_requests', 'success', 'incremental', 1, 1],
+ ['server_errors', 'error', 'incremental', 1, 1],
+ ['redirects', 'redirect', 'incremental', 1, 1],
+ ['bad_requests', 'bad', 'incremental', 1, 1],
+ ['other_requests', 'other', 'incremental', 1, 1]
+ ]}
+}
+
+NAMED_URL_PATTERN = namedtuple('URL_PATTERN', ['description', 'pattern'])
+
+DET_RESP_AGGR = ['', '_1xx', '_2xx', '_3xx', '_4xx', '_5xx', '_Other']
+
+
+class Service(LogService):
+ def __init__(self, configuration=None, name=None):
+ """
+ :param configuration:
+ :param name:
+ # self._get_data = None # will be assigned in 'check' method.
+ # self.order = None # will be assigned in 'create_*_method' method.
+ # self.definitions = None # will be assigned in 'create_*_method' method.
+ """
+ LogService.__init__(self, configuration=configuration, name=name)
+ # Variables from module configuration file
+ self.log_type = self.configuration.get('type', 'web_access')
+ self.log_path = self.configuration.get('path')
+ self.url_pattern = self.configuration.get('categories') # dict
+ self.custom_log_format = self.configuration.get('custom_log_format') # dict
+ # Instance variables
+ self.regex = None # will be assigned in 'find_regex' or 'find_regex_custom' method
+ self.data = {'bytes_sent': 0, 'resp_length': 0, 'resp_time_min': 0, 'resp_time_max': 0,
+ 'resp_time_avg': 0, 'unique_cur_ipv4': 0, 'unique_cur_ipv6': 0, '2xx': 0,
+ '5xx': 0, '3xx': 0, '4xx': 0, '1xx': 0, '0xx': 0, 'unmatched': 0, 'req_ipv4': 0,
+ 'req_ipv6': 0, 'unique_tot_ipv4': 0, 'unique_tot_ipv6': 0, 'successful_requests': 0,
+ 'redirects': 0, 'bad_requests': 0, 'server_errors': 0, 'other_requests': 0, 'GET': 0}
+
+ def check(self):
+ """
+ :return: bool
+
+ 1. "log_path" is specified in the module configuration file
+ 2. "log_path" must be readable by netdata user and must exist
+ 3. "log_path' must not be empty. We need at least 1 line to find appropriate pattern to parse
+ 4. other checks depends on log "type"
+ """
+ if not self.log_path:
+ self.error('log path is not specified')
+ return False
+
+ if not access(self.log_path, R_OK):
+ self.error('%s not readable or not exist' % self.log_path)
+ return False
+
+ if not getsize(self.log_path):
+ self.error('%s is empty' % self.log_path)
+ return False
+
+ # Read last line (or first if there is only one line)
+ with open(self.log_path, 'rb') as logs:
+ logs.seek(-2, 2)
+ while logs.read(1) != b'\n':
+ logs.seek(-2, 1)
+ if logs.tell() == 0:
+ break
+ last_line = logs.readline()
+
+ try:
+ last_line = last_line.decode()
+ except UnicodeDecodeError:
+ try:
+ last_line = last_line.decode(encoding='utf-8')
+ except (TypeError, UnicodeDecodeError) as error:
+ self.error(str(error))
+ return False
+
+ if self.log_type == 'web_access':
+ self.unique_all_time = list() # sorted list of unique IPs
+ self.detailed_response_codes = self.configuration.get('detailed_response_codes', True)
+ self.detailed_response_aggregate = self.configuration.get('detailed_response_aggregate', True)
+ self.all_time = self.configuration.get('all_time', True)
+
+ # Custom_log_format or predefined log format.
+ if self.custom_log_format:
+ match_dict, error = self.find_regex_custom(last_line)
+ else:
+ match_dict, error = self.find_regex(last_line)
+
+ # "match_dict" is None if there are any problems
+ if match_dict is None:
+ self.error(str(error))
+ return False
+
+ # self.url_pattern check
+ if self.url_pattern:
+ self.url_pattern = check_req_per_url_pattern('rpu', self.url_pattern)
+
+ self.create_access_charts(match_dict) # Create charts
+ self._get_data = self._get_access_data # _get_data assignment
+ else:
+ self.error('Not implemented')
+ return False
+
+ # Double check
+ if not self.regex:
+ self.error('That can not happen, but it happened. "regex" is None')
+
+ self.info('Collected data: %s' % list(match_dict.keys()))
+ return True
+
+ def find_regex_custom(self, last_line):
+ """
+ :param last_line: str: literally last line from log file
+ :return: tuple where:
+ [0]: dict or None: match_dict or None
+ [1]: str: error description
+
+ We are here only if "custom_log_format" is in logs. We need to make sure:
+ 1. "custom_log_format" is a dict
+ 2. "pattern" in "custom_log_format" and pattern is <str> instance
+ 3. if "time_multiplier" is in "custom_log_format" it must be <int> instance
+
+ If all parameters is ok we need to make sure:
+ 1. Pattern search is success
+ 2. Pattern search contains named subgroups (?P<subgroup_name>) (= "match_dict")
+
+ If pattern search is success we need to make sure:
+ 1. All mandatory keys ['address', 'code', 'bytes_sent', 'method', 'url'] are in "match_dict"
+
+ If this is True we need to make sure:
+ 1. All mandatory key values from "match_dict" have the correct format
+ ("code" is integer, "method" is uppercase word, etc)
+
+ If non mandatory keys in "match_dict" we need to make sure:
+ 1. All non mandatory key values from match_dict ['resp_length', 'resp_time'] have the correct format
+ ("resp_length" is integer or "-", "resp_time" is integer or float)
+
+ """
+ if not hasattr(self.custom_log_format, 'keys'):
+ return find_regex_return(msg='Custom log: "custom_log_format" is not a <dict>')
+
+ pattern = self.custom_log_format.get('pattern')
+ if not (pattern and isinstance(pattern, str)):
+ return find_regex_return(msg='Custom log: "pattern" option is not specified or type is not <str>')
+
+ resp_time_func = self.custom_log_format.get('time_multiplier') or 0
+
+ if not isinstance(resp_time_func, int):
+ return find_regex_return(msg='Custom log: "time_multiplier" is not an integer')
+
+ try:
+ regex = re.compile(pattern)
+ except re.error as error:
+ return find_regex_return(msg='Pattern compile error: %s' % str(error))
+
+ match = regex.search(last_line)
+ if match:
+ match_dict = match.groupdict() or None
+ else:
+ return find_regex_return(msg='Custom log: pattern search FAILED')
+
+ if match_dict is None:
+ find_regex_return(msg='Custom log: search OK but contains no named subgroups'
+ ' (you need to use ?P<subgroup_name>)')
+ else:
+ mandatory_dict = {'address': r'[\da-f.:]+',
+ 'code': r'[1-9]\d{2}',
+ 'method': r'[A-Z]+',
+ 'bytes_sent': r'\d+|-'}
+ optional_dict = {'resp_length': r'\d+',
+ 'resp_time': r'[\d.]+',
+ 'http_version': r'\d\.\d'}
+
+ mandatory_values = set(mandatory_dict) - set(match_dict)
+ if mandatory_values:
+ return find_regex_return(msg='Custom log: search OK but some mandatory keys (%s) are missing'
+ % list(mandatory_values))
+ else:
+ for key in mandatory_dict:
+ if not re.search(mandatory_dict[key], match_dict[key]):
+ return find_regex_return(msg='Custom log: can\'t parse "%s": %s'
+ % (key, match_dict[key]))
+
+ optional_values = set(optional_dict) & set(match_dict)
+ for key in optional_values:
+ if not re.search(optional_dict[key], match_dict[key]):
+ return find_regex_return(msg='Custom log: can\'t parse "%s": %s'
+ % (key, match_dict[key]))
+
+ dot_in_time = '.' in match_dict.get('resp_time', '')
+ if dot_in_time:
+ self.resp_time_func = lambda time: time * (resp_time_func or 1000000)
+ else:
+ self.resp_time_func = lambda time: time * (resp_time_func or 1)
+
+ self.regex = regex
+ return find_regex_return(match_dict=match_dict)
+
+ def find_regex(self, last_line):
+ """
+ :param last_line: str: literally last line from log file
+ :return: tuple where:
+ [0]: dict or None: match_dict or None
+ [1]: str: error description
+ We need to find appropriate pattern for current log file
+ All logic is do a regex search through the string for all predefined patterns
+ until we find something or fail.
+ """
+ # REGEX: 1.IPv4 address 2.HTTP method 3. URL 4. Response code
+ # 5. Bytes sent 6. Response length 7. Response process time
+ acs_default = re.compile(r'(?P<address>[\da-f.:]+)'
+ r' -.*?"(?P<method>[A-Z]+)'
+ r' (?P<url>[^ ]+)'
+ r' [A-Z]+/(?P<http_version>\d\.\d)"'
+ r' (?P<code>[1-9]\d{2})'
+ r' (?P<bytes_sent>\d+|-)')
+
+ acs_apache_ext_insert = re.compile(r'(?P<address>[\da-f.:]+)'
+ r' -.*?"(?P<method>[A-Z]+)'
+ r' (?P<url>[^ ]+)'
+ r' [A-Z]+/(?P<http_version>\d\.\d)"'
+ r' (?P<code>[1-9]\d{2})'
+ r' (?P<bytes_sent>\d+|-)'
+ r' (?P<resp_length>\d+)'
+ r' (?P<resp_time>\d+) ')
+
+ acs_apache_ext_append = re.compile(r'(?P<address>[\da-f.:]+)'
+ r' -.*?"(?P<method>[A-Z]+)'
+ r' (?P<url>[^ ]+)'
+ r' [A-Z]+/(?P<http_version>\d\.\d)"'
+ r' (?P<code>[1-9]\d{2})'
+ r' (?P<bytes_sent>\d+|-)'
+ r' .*?'
+ r' (?P<resp_length>\d+)'
+ r' (?P<resp_time>\d+)'
+ r'(?: |$)')
+
+ acs_nginx_ext_insert = re.compile(r'(?P<address>[\da-f.:]+)'
+ r' -.*?"(?P<method>[A-Z]+)'
+ r' (?P<url>[^ ]+)'
+ r' [A-Z]+/(?P<http_version>\d\.\d)"'
+ r' (?P<code>[1-9]\d{2})'
+ r' (?P<bytes_sent>\d+)'
+ r' (?P<resp_length>\d+)'
+ r' (?P<resp_time>\d+\.\d+) ')
+
+ acs_nginx_ext_append = re.compile(r'(?P<address>[\da-f.:]+)'
+ r' -.*?"(?P<method>[A-Z]+)'
+ r' (?P<url>[^ ]+)'
+ r' [A-Z]+/(?P<http_version>\d\.\d)"'
+ r' (?P<code>[1-9]\d{2})'
+ r' (?P<bytes_sent>\d+)'
+ r' .*?'
+ r' (?P<resp_length>\d+)'
+ r' (?P<resp_time>\d+\.\d+)')
+
+ def func_usec(time):
+ return time
+
+ def func_sec(time):
+ return time * 1000000
+
+ r_regex = [acs_apache_ext_insert, acs_apache_ext_append, acs_nginx_ext_insert,
+ acs_nginx_ext_append, acs_default]
+ r_function = [func_usec, func_usec, func_sec, func_sec, func_usec]
+ regex_function = zip(r_regex, r_function)
+
+ match_dict = dict()
+ for regex, function in regex_function:
+ match = regex.search(last_line)
+ if match:
+ self.regex = regex
+ self.resp_time_func = function
+ match_dict = match.groupdict()
+ break
+
+ return find_regex_return(match_dict=match_dict or None,
+ msg='Unknown log format. You need to use "custom_log_format" feature.')
+
+ def create_access_charts(self, match_dict):
+ """
+ :param match_dict: dict: regex.search.groupdict(). Ex. {'address': '127.0.0.1', 'code': '200', 'method': 'GET'}
+ :return:
+ Create additional charts depending on the 'match_dict' keys and configuration file options
+ 1. 'time_response' chart is removed if there is no 'resp_time' in match_dict.
+ 2. Other stuff is just remove/add chart depending on yes/no in conf
+ """
+
+ def find_job_name(override_name, name):
+ """
+ :param override_name: str: 'name' var from configuration file
+ :param name: str: 'job_name' from configuration file
+ :return: str: new job name
+ We need this for dynamic charts. Actually same logic as in python.d.plugin.
+ """
+ add_to_name = override_name or name
+ if add_to_name:
+ return '_'.join(['web_log', re.sub('\s+', '_', add_to_name)])
+ else:
+ return 'web_log'
+
+ self.order = ORDER[:]
+ self.definitions = deepcopy(CHARTS)
+
+ job_name = find_job_name(self.override_name, self.name)
+
+ self.http_method_chart = 'CHART %s.http_method' \
+ ' "" "Requests Per HTTP Method" requests/s "http methods"' \
+ ' web_log.http_method stacked 11 %s\n' \
+ 'DIMENSION GET GET incremental\n' % (job_name, self.update_every)
+ self.http_version_chart = 'CHART %s.http_version' \
+ ' "" "Requests Per HTTP Version" requests/s "http versions"' \
+ ' web_log.http_version stacked 12 %s\n' % (job_name, self.update_every)
+
+ # Remove 'request_time' chart from ORDER if resp_time not in match_dict
+ if 'resp_time' not in match_dict:
+ self.order.remove('response_time')
+ # Remove 'clients_all' chart from ORDER if specified in the configuration
+ if not self.all_time:
+ self.order.remove('clients_all')
+ # Add 'detailed_response_codes' chart if specified in the configuration
+ if self.detailed_response_codes:
+ self.detailed_chart = list()
+ for prio, add_to_dim in enumerate(DET_RESP_AGGR):
+ self.detailed_chart.append('CHART %s.detailed_response_codes%s ""'
+ ' "Detailed Response Codes %s" requests/s responses'
+ ' web_log.detailed_response_codes%s stacked %s %s\n'
+ % (job_name, add_to_dim, add_to_dim[1:], add_to_dim,
+ str(prio), self.update_every))
+
+ codes = DET_RESP_AGGR[:1] if self.detailed_response_aggregate else DET_RESP_AGGR[1:]
+ for code in codes:
+ self.order.append('detailed_response_codes%s' % code)
+ self.definitions['detailed_response_codes%s' % code] = {'options':
+ [None,
+ 'Detailed Response Codes %s' % code[1:],
+ 'requests/s',
+ 'responses',
+ 'web_log.detailed_response_codes%s' % code,
+ 'stacked'],
+ 'lines': []}
+
+ # Add 'requests_per_url' chart if specified in the configuration
+ if self.url_pattern:
+ self.definitions['requests_per_url'] = {'options': [None, 'Requests Per Url', 'requests/s',
+ 'urls', 'web_log.requests_per_url', 'stacked'],
+ 'lines': [['rpu_other', 'other', 'incremental']]}
+ for elem in self.url_pattern:
+ self.definitions['requests_per_url']['lines'].append([elem.description, elem.description[4:],
+ 'incremental'])
+ self.data.update({elem.description: 0})
+ self.data.update({'rpu_other': 0})
+ else:
+ self.order.remove('requests_per_url')
+
+ def add_new_dimension(self, dimension, line_list, chart_string, key):
+ """
+ :param dimension: str: response status code. Ex.: '202', '499'
+ :param line_list: list: Ex.: ['202', '202', 'incremental']
+ :param chart_string: Current string we need to pass to netdata to rebuild the chart
+ :param key: str: CHARTS dict key (chart name). Ex.: 'response_time'
+ :return: str: new chart string = previous + new dimensions
+ """
+ self.data.update({dimension: 0})
+ # SET method check if dim in _dimensions
+ self._dimensions.append(dimension)
+ # UPDATE method do SET only if dim in definitions
+ self.definitions[key]['lines'].append(line_list)
+ chart = chart_string
+ chart += "%s %s\n" % ('DIMENSION', ' '.join(line_list))
+ print(chart)
+ return chart
+
+ def _get_access_data(self):
+ """
+ Parse new log lines
+ :return: dict OR None
+ None if _get_raw_data method fails.
+ In all other cases - dict.
+ """
+ raw = self._get_raw_data()
+ if raw is None:
+ return None
+
+ request_time, unique_current = list(), list()
+ request_counter = {'count': 0, 'sum': 0}
+ ip_address_counter = {'unique_cur_ip': 0}
+ for line in raw:
+ match = self.regex.search(line)
+ if match:
+ match_dict = match.groupdict()
+ try:
+ code = ''.join([match_dict['code'][0], 'xx'])
+ self.data[code] += 1
+ except KeyError:
+ self.data['0xx'] += 1
+ # detailed response code
+ if self.detailed_response_codes:
+ self._get_data_detailed_response_codes(match_dict['code'])
+ # response statuses
+ self._get_data_statuses(match_dict['code'])
+ # requests per url
+ if self.url_pattern:
+ self._get_data_per_url(match_dict['url'])
+ # requests per http method
+ self._get_data_http_method(match_dict['method'])
+ # requests per http version
+ if 'http_version' in match_dict:
+ self._get_data_http_version(match_dict['http_version'])
+ # bandwidth sent
+ bytes_sent = match_dict['bytes_sent'] if '-' not in match_dict['bytes_sent'] else 0
+ self.data['bytes_sent'] += int(bytes_sent)
+ # request processing time and bandwidth received
+ if 'resp_length' in match_dict:
+ self.data['resp_length'] += int(match_dict['resp_length'])
+ if 'resp_time' in match_dict:
+ resp_time = self.resp_time_func(float(match_dict['resp_time']))
+ bisect.insort_left(request_time, resp_time)
+ request_counter['count'] += 1
+ request_counter['sum'] += resp_time
+ # requests per ip proto
+ proto = 'ipv4' if '.' in match_dict['address'] else 'ipv6'
+ self.data['req_' + proto] += 1
+ # unique clients ips
+ if address_not_in_pool(self.unique_all_time, match_dict['address'],
+ self.data['unique_tot_ipv4'] + self.data['unique_tot_ipv6']):
+ self.data['unique_tot_' + proto] += 1
+ if address_not_in_pool(unique_current, match_dict['address'], ip_address_counter['unique_cur_ip']):
+ self.data['unique_cur_' + proto] += 1
+ ip_address_counter['unique_cur_ip'] += 1
+ else:
+ self.data['unmatched'] += 1
+
+ # timings
+ if request_time:
+ self.data['resp_time_min'] += int(request_time[0])
+ self.data['resp_time_avg'] += int(round(float(request_counter['sum']) / request_counter['count']))
+ self.data['resp_time_max'] += int(request_time[-1])
+ return self.data
+
+ def _get_data_detailed_response_codes(self, code):
+ """
+ :param code: str: CODE from parsed line. Ex.: '202, '499'
+ :return:
+ Calls add_new_dimension method If the value is found for the first time
+ """
+ if code not in self.data:
+ if self.detailed_response_aggregate:
+ chart_string_copy = self.detailed_chart[0]
+ self.detailed_chart[0] = self.add_new_dimension(code, [code, code, 'incremental'],
+ chart_string_copy, 'detailed_response_codes')
+ else:
+ code_index = int(code[0]) if int(code[0]) < 6 else 6
+ chart_string_copy = self.detailed_chart[code_index]
+ chart_name = 'detailed_response_codes' + DET_RESP_AGGR[code_index]
+ self.detailed_chart[code_index] = self.add_new_dimension(code, [code, code, 'incremental'],
+ chart_string_copy, chart_name)
+ self.data[code] += 1
+
+ def _get_data_http_method(self, method):
+ """
+ :param method: str: METHOD from parsed line. Ex.: 'GET', 'POST'
+ :return:
+ Calls add_new_dimension method If the value is found for the first time
+ """
+ if method not in self.data:
+ chart_string_copy = self.http_method_chart
+ self.http_method_chart = self.add_new_dimension(method, [method, method, 'incremental'],
+ chart_string_copy, 'http_method')
+ self.data[method] += 1
+
+ def _get_data_http_version(self, http_version):
+ """
+ :param http_version: str: METHOD from parsed line. Ex.: '1.1', '1.0'
+ :return:
+ Calls add_new_dimension method If the value is found for the first time
+ """
+ http_version_dim_id = http_version.replace('.', '_')
+ if http_version_dim_id not in self.data:
+ chart_string_copy = self.http_version_chart
+ self.http_version_chart = self.add_new_dimension(http_version_dim_id,
+ [http_version_dim_id, http_version, 'incremental'],
+ chart_string_copy, 'http_version')
+ self.data[http_version_dim_id] += 1
+
+ def _get_data_per_url(self, url):
+ """
+ :param url: str: URL from parsed line
+ :return:
+ Scan through string looking for the first location where patterns produce a match for all user
+ defined patterns
+ """
+ match = None
+ for elem in self.url_pattern:
+ if elem.pattern.search(url):
+ self.data[elem.description] += 1
+ match = True
+ break
+ if not match:
+ self.data['rpu_other'] += 1
+
+ def _get_data_statuses(self, code):
+ """
+ :param code: str: response status code. Ex.: '202', '499'
+ :return:
+ """
+ code_class = code[0]
+ if code_class == '2' or code == '304' or code_class == '1':
+ self.data['successful_requests'] += 1
+ elif code_class == '3':
+ self.data['redirects'] += 1
+ elif code_class == '4':
+ self.data['bad_requests'] += 1
+ elif code_class == '5':
+ self.data['server_errors'] += 1
+ else:
+ self.data['other_requests'] += 1
+
+
+def address_not_in_pool(pool, address, pool_size):
+ """
+ :param pool: list of ip addresses
+ :param address: ip address
+ :param pool_size: current pool size
+ :return: True if address not in pool. False if address in pool.
+ """
+ index = bisect.bisect_left(pool, address)
+ if index < pool_size:
+ if pool[index] == address:
+ return False
+ else:
+ bisect.insort_left(pool, address)
+ return True
+ else:
+ bisect.insort_left(pool, address)
+ return True
+
+
+def find_regex_return(match_dict=None, msg='Generic error message'):
+ """
+ :param match_dict: dict: re.search.groupdict() or None
+ :param msg: str: error description
+ :return: tuple:
+ """
+ return match_dict, msg
+
+
+def check_req_per_url_pattern(string, url_pattern):
+ """
+ :param string: str:
+ :param url_pattern: dict: ex. {'dim1': 'pattern1>', 'dim2': '<pattern2>'}
+ :return: list of named tuples or None:
+ We need to make sure all patterns are valid regular expressions
+ """
+ if not hasattr(url_pattern, 'keys'):
+ return None
+
+ result = list()
+
+ def is_valid_pattern(pattern):
+ """
+ :param pattern: str
+ :return: re.compile(pattern) or None
+ """
+ if not isinstance(pattern, str):
+ return False
+ else:
+ try:
+ compile_pattern = re.compile(pattern)
+ except re.error:
+ return False
+ else:
+ return compile_pattern
+
+ for dimension, regex in url_pattern.items():
+ valid_pattern = is_valid_pattern(regex)
+ if isinstance(dimension, str) and valid_pattern:
+ result.append(NAMED_URL_PATTERN(description='_'.join([string, dimension]), pattern=valid_pattern))
+
+ return result or None