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-rw-r--r--python.d/couchdb.chart.py410
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diff --git a/python.d/couchdb.chart.py b/python.d/couchdb.chart.py
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-# -*- coding: utf-8 -*-
-# Description: couchdb netdata python.d module
-# Author: wohali <wohali@apache.org>
-# Thanks to l2isbad for good examples :)
-
-from collections import namedtuple, defaultdict
-from json import loads
-from threading import Thread
-from socket import gethostbyname, gaierror
-try:
- from queue import Queue
-except ImportError:
- from Queue import Queue
-
-from bases.FrameworkServices.UrlService import UrlService
-
-# default module values (can be overridden per job in `config`)
-update_every = 1
-priority = 60000
-retries = 60
-
-METHODS = namedtuple('METHODS', ['get_data', 'url', 'stats'])
-
-OVERVIEW_STATS = [
- 'couchdb.database_reads.value',
- 'couchdb.database_writes.value',
- 'couchdb.httpd.view_reads.value'
- 'couchdb.httpd_request_methods.COPY.value',
- 'couchdb.httpd_request_methods.DELETE.value',
- 'couchdb.httpd_request_methods.GET.value',
- 'couchdb.httpd_request_methods.HEAD.value',
- 'couchdb.httpd_request_methods.OPTIONS.value',
- 'couchdb.httpd_request_methods.POST.value',
- 'couchdb.httpd_request_methods.PUT.value',
- 'couchdb.httpd_status_codes.200.value',
- 'couchdb.httpd_status_codes.201.value',
- 'couchdb.httpd_status_codes.202.value',
- 'couchdb.httpd_status_codes.204.value',
- 'couchdb.httpd_status_codes.206.value',
- 'couchdb.httpd_status_codes.301.value',
- 'couchdb.httpd_status_codes.302.value',
- 'couchdb.httpd_status_codes.304.value',
- 'couchdb.httpd_status_codes.400.value',
- 'couchdb.httpd_status_codes.401.value',
- 'couchdb.httpd_status_codes.403.value',
- 'couchdb.httpd_status_codes.404.value',
- 'couchdb.httpd_status_codes.405.value',
- 'couchdb.httpd_status_codes.406.value',
- 'couchdb.httpd_status_codes.409.value',
- 'couchdb.httpd_status_codes.412.value',
- 'couchdb.httpd_status_codes.413.value',
- 'couchdb.httpd_status_codes.414.value',
- 'couchdb.httpd_status_codes.415.value',
- 'couchdb.httpd_status_codes.416.value',
- 'couchdb.httpd_status_codes.417.value',
- 'couchdb.httpd_status_codes.500.value',
- 'couchdb.httpd_status_codes.501.value',
- 'couchdb.open_os_files.value',
- 'couch_replicator.jobs.running.value',
- 'couch_replicator.jobs.pending.value',
- 'couch_replicator.jobs.crashed.value',
-]
-
-SYSTEM_STATS = [
- 'context_switches',
- 'run_queue',
- 'ets_table_count',
- 'reductions',
- 'memory.atom',
- 'memory.atom_used',
- 'memory.binary',
- 'memory.code',
- 'memory.ets',
- 'memory.other',
- 'memory.processes',
- 'io_input',
- 'io_output',
- 'os_proc_count',
- 'process_count',
- 'internal_replication_jobs'
-]
-
-DB_STATS = [
- 'doc_count',
- 'doc_del_count',
- 'sizes.file',
- 'sizes.external',
- 'sizes.active'
-]
-
-ORDER = [
- 'activity',
- 'request_methods',
- 'response_codes',
- 'active_tasks',
- 'replicator_jobs',
- 'open_files',
- 'db_sizes_file',
- 'db_sizes_external',
- 'db_sizes_active',
- 'db_doc_counts',
- 'db_doc_del_counts',
- 'erlang_memory',
- 'erlang_proc_counts',
- 'erlang_peak_msg_queue',
- 'erlang_reductions'
-]
-
-CHARTS = {
- 'activity': {
- 'options': [None, 'Overall Activity', 'req/s',
- 'dbactivity', 'couchdb.activity', 'stacked'],
- 'lines': [
- ['couchdb_database_reads', 'DB reads', 'incremental'],
- ['couchdb_database_writes', 'DB writes', 'incremental'],
- ['couchdb_httpd_view_reads', 'View reads', 'incremental']
- ]
- },
- 'request_methods': {
- 'options': [None, 'HTTP request methods', 'req/s',
- 'httptraffic', 'couchdb.request_methods',
- 'stacked'],
- 'lines': [
- ['couchdb_httpd_request_methods_COPY', 'COPY', 'incremental'],
- ['couchdb_httpd_request_methods_DELETE', 'DELETE', 'incremental'],
- ['couchdb_httpd_request_methods_GET', 'GET', 'incremental'],
- ['couchdb_httpd_request_methods_HEAD', 'HEAD', 'incremental'],
- ['couchdb_httpd_request_methods_OPTIONS', 'OPTIONS',
- 'incremental'],
- ['couchdb_httpd_request_methods_POST', 'POST', 'incremental'],
- ['couchdb_httpd_request_methods_PUT', 'PUT', 'incremental']
- ]
- },
- 'response_codes': {
- 'options': [None, 'HTTP response status codes', 'resp/s',
- 'httptraffic', 'couchdb.response_codes',
- 'stacked'],
- 'lines': [
- ['couchdb_httpd_status_codes_200', '200 OK', 'incremental'],
- ['couchdb_httpd_status_codes_201', '201 Created', 'incremental'],
- ['couchdb_httpd_status_codes_202', '202 Accepted', 'incremental'],
- ['couchdb_httpd_status_codes_2xx', 'Other 2xx Success',
- 'incremental'],
- ['couchdb_httpd_status_codes_3xx', '3xx Redirection',
- 'incremental'],
- ['couchdb_httpd_status_codes_4xx', '4xx Client error',
- 'incremental'],
- ['couchdb_httpd_status_codes_5xx', '5xx Server error',
- 'incremental']
- ]
- },
- 'open_files': {
- 'options': [None, 'Open files', 'files',
- 'ops', 'couchdb.open_files', 'line'],
- 'lines': [
- ['couchdb_open_os_files', '# files', 'absolute']
- ]
- },
- 'active_tasks': {
- 'options': [None, 'Active task breakdown', 'tasks',
- 'ops', 'couchdb.active_tasks', 'stacked'],
- 'lines': [
- ['activetasks_indexer', 'Indexer', 'absolute'],
- ['activetasks_database_compaction', 'DB Compaction', 'absolute'],
- ['activetasks_replication', 'Replication', 'absolute'],
- ['activetasks_view_compaction', 'View Compaction', 'absolute']
- ]
- },
- 'replicator_jobs': {
- 'options': [None, 'Replicator job breakdown', 'jobs',
- 'ops', 'couchdb.replicator_jobs', 'stacked'],
- 'lines': [
- ['couch_replicator_jobs_running', 'Running', 'absolute'],
- ['couch_replicator_jobs_pending', 'Pending', 'absolute'],
- ['couch_replicator_jobs_crashed', 'Crashed', 'absolute'],
- ['internal_replication_jobs', 'Internal replication jobs',
- 'absolute']
- ]
- },
- 'erlang_memory': {
- 'options': [None, 'Erlang VM memory usage', 'bytes',
- 'erlang', 'couchdb.erlang_vm_memory', 'stacked'],
- 'lines': [
- ['memory_atom', 'atom', 'absolute'],
- ['memory_binary', 'binaries', 'absolute'],
- ['memory_code', 'code', 'absolute'],
- ['memory_ets', 'ets', 'absolute'],
- ['memory_processes', 'procs', 'absolute'],
- ['memory_other', 'other', 'absolute']
- ]
- },
- 'erlang_reductions': {
- 'options': [None, 'Erlang reductions', 'count',
- 'erlang', 'couchdb.reductions', 'line'],
- 'lines': [
- ['reductions', 'reductions', 'incremental']
- ]
- },
- 'erlang_proc_counts': {
- 'options': [None, 'Process counts', 'count',
- 'erlang', 'couchdb.proccounts', 'line'],
- 'lines': [
- ['os_proc_count', 'OS procs', 'absolute'],
- ['process_count', 'erl procs', 'absolute']
- ]
- },
- 'erlang_peak_msg_queue': {
- 'options': [None, 'Peak message queue size', 'count',
- 'erlang', 'couchdb.peakmsgqueue',
- 'line'],
- 'lines': [
- ['peak_msg_queue', 'peak size', 'absolute']
- ]
- },
- # Lines for the following are added as part of check()
- 'db_sizes_file': {
- 'options': [None, 'Database sizes (file)', 'KB',
- 'perdbstats', 'couchdb.db_sizes_file', 'line'],
- 'lines': []
- },
- 'db_sizes_external': {
- 'options': [None, 'Database sizes (external)', 'KB',
- 'perdbstats', 'couchdb.db_sizes_external', 'line'],
- 'lines': []
- },
- 'db_sizes_active': {
- 'options': [None, 'Database sizes (active)', 'KB',
- 'perdbstats', 'couchdb.db_sizes_active', 'line'],
- 'lines': []
- },
- 'db_doc_counts': {
- 'options': [None, 'Database # of docs', 'docs',
- 'perdbstats', 'couchdb_db_doc_count', 'line'],
- 'lines': []
- },
- 'db_doc_del_counts': {
- 'options': [None, 'Database # of deleted docs', 'docs',
- 'perdbstats', 'couchdb_db_doc_del_count', 'line'],
- 'lines': []
- }
-}
-
-
-class Service(UrlService):
- def __init__(self, configuration=None, name=None):
- UrlService.__init__(self, configuration=configuration, name=name)
- self.order = ORDER
- self.definitions = CHARTS
- self.host = self.configuration.get('host', '127.0.0.1')
- self.port = self.configuration.get('port', 5984)
- self.node = self.configuration.get('node', 'couchdb@127.0.0.1')
- self.scheme = self.configuration.get('scheme', 'http')
- self.user = self.configuration.get('user')
- self.password = self.configuration.get('pass')
- try:
- self.dbs = self.configuration.get('databases').split(' ')
- except (KeyError, AttributeError):
- self.dbs = []
-
- def check(self):
- if not (self.host and self.port):
- self.error('Host is not defined in the module configuration file')
- return False
- try:
- self.host = gethostbyname(self.host)
- except gaierror as error:
- self.error(str(error))
- return False
- self.url = '{scheme}://{host}:{port}'.format(scheme=self.scheme,
- host=self.host,
- port=self.port)
- stats = self.url + '/_node/{node}/_stats'.format(node=self.node)
- active_tasks = self.url + '/_active_tasks'
- system = self.url + '/_node/{node}/_system'.format(node=self.node)
- self.methods = [METHODS(get_data=self._get_overview_stats,
- url=stats,
- stats=OVERVIEW_STATS),
- METHODS(get_data=self._get_active_tasks_stats,
- url=active_tasks,
- stats=None),
- METHODS(get_data=self._get_overview_stats,
- url=system,
- stats=SYSTEM_STATS),
- METHODS(get_data=self._get_dbs_stats,
- url=self.url,
- stats=DB_STATS)]
- # must initialise manager before using _get_raw_data
- self._manager = self._build_manager()
- self.dbs = [db for db in self.dbs
- if self._get_raw_data(self.url + '/' + db)]
- for db in self.dbs:
- self.definitions['db_sizes_file']['lines'].append(
- ['db_'+db+'_sizes_file', db, 'absolute', 1, 1000]
- )
- self.definitions['db_sizes_external']['lines'].append(
- ['db_'+db+'_sizes_external', db, 'absolute', 1, 1000]
- )
- self.definitions['db_sizes_active']['lines'].append(
- ['db_'+db+'_sizes_active', db, 'absolute', 1, 1000]
- )
- self.definitions['db_doc_counts']['lines'].append(
- ['db_'+db+'_doc_count', db, 'absolute']
- )
- self.definitions['db_doc_del_counts']['lines'].append(
- ['db_'+db+'_doc_del_count', db, 'absolute']
- )
- return UrlService.check(self)
-
- def _get_data(self):
- threads = list()
- queue = Queue()
- result = dict()
-
- for method in self.methods:
- th = Thread(target=method.get_data,
- args=(queue, method.url, method.stats))
- th.start()
- threads.append(th)
-
- for thread in threads:
- thread.join()
- result.update(queue.get())
-
- # self.info('couchdb result = ' + str(result))
- return result or None
-
- def _get_overview_stats(self, queue, url, stats):
- raw_data = self._get_raw_data(url)
- if not raw_data:
- return queue.put(dict())
- data = loads(raw_data)
- to_netdata = self._fetch_data(raw_data=data, metrics=stats)
- if 'message_queues' in data:
- to_netdata['peak_msg_queue'] = get_peak_msg_queue(data)
- return queue.put(to_netdata)
-
- def _get_active_tasks_stats(self, queue, url, _):
- taskdict = defaultdict(int)
- taskdict["activetasks_indexer"] = 0
- taskdict["activetasks_database_compaction"] = 0
- taskdict["activetasks_replication"] = 0
- taskdict["activetasks_view_compaction"] = 0
- raw_data = self._get_raw_data(url)
- if not raw_data:
- return queue.put(dict())
- data = loads(raw_data)
- for task in data:
- taskdict["activetasks_" + task["type"]] += 1
- return queue.put(dict(taskdict))
-
- def _get_dbs_stats(self, queue, url, stats):
- to_netdata = {}
- for db in self.dbs:
- raw_data = self._get_raw_data(url + '/' + db)
- if not raw_data:
- continue
- data = loads(raw_data)
- for metric in stats:
- value = data
- metrics_list = metric.split('.')
- try:
- for m in metrics_list:
- value = value[m]
- except KeyError as e:
- self.debug('cannot process ' + metric + ' for ' + db
- + ": " + str(e))
- continue
- metric_name = 'db_{0}_{1}'.format(db, '_'.join(metrics_list))
- to_netdata[metric_name] = value
- return queue.put(to_netdata)
-
- def _fetch_data(self, raw_data, metrics):
- data = dict()
- for metric in metrics:
- value = raw_data
- metrics_list = metric.split('.')
- try:
- for m in metrics_list:
- value = value[m]
- except KeyError as e:
- self.debug('cannot process ' + metric + ': ' + str(e))
- continue
- # strip off .value from end of stat
- if metrics_list[-1] == 'value':
- metrics_list = metrics_list[:-1]
- # sum up 3xx/4xx/5xx
- if metrics_list[0:2] == ['couchdb', 'httpd_status_codes'] and \
- int(metrics_list[2]) > 202:
- metrics_list[2] = '{0}xx'.format(int(metrics_list[2]) // 100)
- if '_'.join(metrics_list) in data:
- data['_'.join(metrics_list)] += value
- else:
- data['_'.join(metrics_list)] = value
- else:
- data['_'.join(metrics_list)] = value
- return data
-
-
-def get_peak_msg_queue(data):
- maxsize = 0
- queues = data['message_queues']
- for queue in iter(queues.values()):
- if isinstance(queue, dict) and 'count' in queue:
- value = queue['count']
- elif isinstance(queue, int):
- value = queue
- else:
- continue
- maxsize = max(maxsize, value)
- return maxsize