web_log plugin: some optimization
Ilya committed
Feb 11, 2017 at 15:12 UTC
400f2876a96d3d948330e3838d78062b4bcd3857
1 file changed
+57
-53
python.d/web_log.chart.py
+57
-53
@@ -78,7 +78,13 @@ class Service(LogService):
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self.detailed_response_codes = self.configuration.get('detailed_response_codes', True)
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self.all_time = self.configuration.get('all_time', True)
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self.url_pattern = self.configuration.get('categories') # dict
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- self.regex = None
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+ self.regex = None # will be assigned in 'find_regex' method
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+ self.resp_time_func = None # will be assigned in 'find_regex' method
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+ self._get_data = None # will be assigned in 'check' method.
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+ self.order = None # will be assigned in 'create_*_method' method.
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+ self.definitions = None # will be assigned in 'create_*_method' method.
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+ self.detailed_chart = None # will be assigned in 'create_*_method' method.
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+ self.http_method_chart = None # will be assigned in 'create_*_method' method.
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# sorted list of unique IPs
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self.unique_all_time = list()
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# dict for values that should not be zeroed every poll
@@ -114,20 +120,26 @@ class Service(LogService):
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last_line = logs.readline().decode(encoding='utf-8')
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# Parse last line
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- parsed_line, regex_name = self.find_regex(last_line)
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- if not parsed_line:
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- self.error('Can\'t parse output')
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+ regex_name = self.find_regex(last_line)
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+ if not regex_name:
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+ self.error('Can\'t parse %s' % self.log_path)
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return False
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- self.create_charts(parsed_line[0], regex_name)
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- if len(parsed_line[0]) == 5:
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- self.info('Not all data collected. You need to modify LogFormat.')
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- return True
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+ if regex_name.startswith('access_'):
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+ self.create_access_charts(regex_name)
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+ if regex_name == 'access_default':
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+ self.info('Not all data collected. You need to modify LogFormat.')
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+ self._get_data = self._get_access_data
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+ self.info('Used regex: %s' % regex_name)
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+ return True
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+ else:
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+ # If it's not access_logs.. Not used at the moment
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+ return False
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def find_regex(self, last_line):
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"""
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:param last_line: str: literally last line from log file
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- :return: parsed line, regex name (the one that matches) OR None, None
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+ :return: regex_name
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It's sad but different web servers has different logs formats
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We need to find appropriate regex for current log file
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All logic is do a regex search through the string for all patterns
@@ -135,47 +147,42 @@ class Service(LogService):
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"""
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# REGEX: 1.IPv4 address 2.HTTP method 3. URL 4. Response code
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# 5. Bytes sent 6. Response length 7. Response process time
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- default = re.compile(r'([\da-f.:]+)'
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- r' -.*?"([A-Z]+)'
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- r' (.*?)"'
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- r' ([1-9]\d{2})'
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- r' (\d+)')
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-
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- apache_extended = re.compile(r'([\da-f.:]+)'
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+ access_default = re.compile(r'([\da-f.:]+)'
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r' -.*?"([A-Z]+)'
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r' (.*?)"'
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r' ([1-9]\d{2})'
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- r' (\d+)'
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- r' (\d+)'
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- r' (\d+) ')
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-
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- nginx_extended = re.compile(r'([\da-f.:]+)'
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- r' -.*?"([A-Z]+)'
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- r' (.*?)"'
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- r' ([1-9]\d{2})'
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- r' (\d+)'
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- r' (\d+)'
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- r' ([\d.]+) ')
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-
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- regex_function = zip([apache_extended, nginx_extended, default],
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+ r' (\d+)')
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+
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+ access_apache_ext = re.compile(r'([\da-f.:]+)'
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+ r' -.*?"([A-Z]+)'
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+ r' (.*?)"'
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+ r' ([1-9]\d{2})'
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+ r' (\d+)'
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+ r' (\d+)'
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+ r' (\d+) ')
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+
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+ access_nginx_ext = re.compile(r'([\da-f.:]+)'
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+ r' -.*?"([A-Z]+)'
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+ r' (.*?)"'
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+ r' ([1-9]\d{2})'
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+ r' (\d+)'
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+ r' (\d+)'
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+ r' ([\d.]+) ')
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+
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+ regex_function = zip([access_apache_ext, access_nginx_ext, access_default],
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[lambda x: x, lambda x: x * 1000, lambda x: x],
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- ['apache_extended', 'nginx_extended', 'default'])
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-
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+ ['access_apache_ext', 'access_nginx_ext', 'access_default'])
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+ regex_name = None
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for regex, function, name in regex_function:
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if regex.search(last_line):
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self.regex = regex
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self.resp_time_func = function
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regex_name = name
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break
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+ return regex_name
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- if self.regex:
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- return self.regex.findall(last_line), regex_name
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- else:
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- return None, None
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-
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- def create_charts(self, parsed_line, regex_name):
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+ def create_access_charts(self, regex_name):
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"""
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- :param parsed_line: list: re.findall result.
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:param regex_name: str: regex name from 'find_regex' method. Ex.: 'apache_extended', 'nginx_extended'
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:return:
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Create additional charts depending on the 'find_regex' result (parsed_line) and configuration file
@@ -207,13 +214,13 @@ class Service(LogService):
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' "" "HTTP Methods" requests/s requests' \
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' web_log.http_method stacked 2 %s\n' % (job_name, self.update_every)
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- if 'apache' in regex_name:
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+ if regex_name == 'access_apache_ext':
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self.definitions['response_time']['lines'][0][4] = 1000
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self.definitions['response_time']['lines'][1][4] = 1000
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self.definitions['response_time']['lines'][2][4] = 1000
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# Remove 'request_time' chart from ORDER if request_time not in logs
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- if len(parsed_line) < 7:
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+ if regex_name == 'access_default':
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self.order.remove('response_time')
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# Remove 'clients_all' chart from ORDER if specified in the configuration
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if not self.all_time:
@@ -246,7 +253,7 @@ class Service(LogService):
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:param key: str: CHARTS dict key (chart name). Ex.: 'response_time'
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:return: str: new chart string = previous + new dimensions
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"""
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- self.storage.update({dimension: 0})
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+ self.data.update({dimension: 0})
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# SET method check if dim in _dimensions
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self._dimensions.append(dimension)
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# UPDATE method do SET only if dim in definitions
@@ -256,7 +263,7 @@ class Service(LogService):
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print(chart)
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return chart
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- def _get_data(self):
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+ def _get_access_data(self):
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"""
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Parse new log lines
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:return: dict OR None
@@ -276,7 +283,8 @@ class Service(LogService):
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for line in raw:
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match = self.regex.search(line)
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if match:
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- match_dict = dict(zip_longest('address method url code sent resp_length resp_time'.split(), match.groups()))
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+ match_dict = dict(zip_longest('address method url code sent resp_length resp_time'.split(),
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+ match.groups()))
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try:
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code = ''.join([match_dict['code'][0], 'xx'])
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to_netdata[code] += 1
@@ -290,9 +298,9 @@ class Service(LogService):
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self._get_data_per_url(match_dict['url'], default_dict)
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# requests per http method
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self._get_data_http_method(match_dict['method'], default_dict)
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-
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+ # bandwidth sent
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to_netdata['bytes_sent'] += int(match_dict['sent'])
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-
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+ # request processing time and bandwidth received
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if match_dict['resp_length'] and match_dict['resp_time']:
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to_netdata['resp_length'] += int(match_dict['resp_length'])
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resp_time = self.resp_time_func(float(match_dict['resp_time']))
@@ -300,12 +308,8 @@ class Service(LogService):
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request_counter['count'] += 1
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request_counter['sum'] += resp_time
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# requests per ip proto
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- if '.' in match_dict['address']:
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- proto = 'ipv4'
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- to_netdata['req_ipv4'] += 1
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- else:
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- proto = 'ipv6'
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- to_netdata['req_ipv6'] += 1
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+ proto = 'ipv4' if '.' in match_dict['address'] else 'ipv6'
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+ to_netdata['req_' + proto] += 1
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# unique clients ips
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if address_not_in_pool(self.unique_all_time, match_dict['address'],
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self.storage['unique_tot_ipv4'] + self.storage['unique_tot_ipv6']):
@@ -332,7 +336,7 @@ class Service(LogService):
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:return:
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Calls add_new_dimension method If the value is found for the first time
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"""
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- if code not in self.storage:
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+ if code not in self.data:
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chart_string_copy = self.detailed_chart
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self.detailed_chart = self.add_new_dimension(code, [code, code, 'absolute'],
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chart_string_copy, 'detailed_response_codes')
@@ -345,7 +349,7 @@ class Service(LogService):
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:return:
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Calls add_new_dimension method If the value is found for the first time
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"""
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- if method not in self.storage:
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+ if method not in self.data:
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chart_string_copy = self.http_method_chart
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self.http_method_chart = self.add_new_dimension(method, [method, method, 'absolute'],
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chart_string_copy, 'http_method')