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authorDaniel Baumann <daniel.baumann@progress-linux.org>2018-11-07 12:22:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2018-11-07 12:22:44 +0000
commit1e6c93250172946eeb38e94a92a1fd12c9d3011e (patch)
tree8ca5e16dfc7ad6b3bf2738ca0a48408a950f8f7e /python.d/postgres.chart.py
parentUpdate watch file (diff)
downloadnetdata-1e6c93250172946eeb38e94a92a1fd12c9d3011e.tar.xz
netdata-1e6c93250172946eeb38e94a92a1fd12c9d3011e.zip
Merging upstream version 1.11.0+dfsg.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'python.d/postgres.chart.py')
-rw-r--r--python.d/postgres.chart.py666
1 files changed, 0 insertions, 666 deletions
diff --git a/python.d/postgres.chart.py b/python.d/postgres.chart.py
deleted file mode 100644
index 0522b1938..000000000
--- a/python.d/postgres.chart.py
+++ /dev/null
@@ -1,666 +0,0 @@
-# -*- coding: utf-8 -*-
-# Description: example netdata python.d module
-# Authors: facetoe, dangtranhoang
-
-from copy import deepcopy
-
-try:
- import psycopg2
- from psycopg2 import extensions
- from psycopg2.extras import DictCursor
- from psycopg2 import OperationalError
- PSYCOPG2 = True
-except ImportError:
- PSYCOPG2 = False
-
-from bases.FrameworkServices.SimpleService import SimpleService
-
-# default module values
-update_every = 1
-priority = 60000
-retries = 60
-
-METRICS = dict(
- DATABASE=['connections',
- 'xact_commit',
- 'xact_rollback',
- 'blks_read',
- 'blks_hit',
- 'tup_returned',
- 'tup_fetched',
- 'tup_inserted',
- 'tup_updated',
- 'tup_deleted',
- 'conflicts',
- 'temp_files',
- 'temp_bytes',
- 'size'],
- BACKENDS=['backends_active',
- 'backends_idle'],
- INDEX_STATS=['index_count',
- 'index_size'],
- TABLE_STATS=['table_size',
- 'table_count'],
- WAL=['written_wal',
- 'recycled_wal',
- 'total_wal'],
- WAL_WRITES=['wal_writes'],
- ARCHIVE=['ready_count',
- 'done_count',
- 'file_count'],
- BGWRITER=['checkpoint_scheduled',
- 'checkpoint_requested',
- 'buffers_checkpoint',
- 'buffers_clean',
- 'maxwritten_clean',
- 'buffers_backend',
- 'buffers_alloc',
- 'buffers_backend_fsync'],
- LOCKS=['ExclusiveLock',
- 'RowShareLock',
- 'SIReadLock',
- 'ShareUpdateExclusiveLock',
- 'AccessExclusiveLock',
- 'AccessShareLock',
- 'ShareRowExclusiveLock',
- 'ShareLock',
- 'RowExclusiveLock'],
- AUTOVACUUM=['analyze',
- 'vacuum_analyze',
- 'vacuum',
- 'vacuum_freeze',
- 'brin_summarize'],
- STANDBY_DELTA=['sent_delta',
- 'write_delta',
- 'flush_delta',
- 'replay_delta'],
- REPSLOT_FILES=['replslot_wal_keep',
- 'replslot_files']
-
-)
-
-QUERIES = dict(
- WAL="""
-SELECT
- count(*) as total_wal,
- count(*) FILTER (WHERE type = 'recycled') AS recycled_wal,
- count(*) FILTER (WHERE type = 'written') AS written_wal
-FROM
- (SELECT wal.name,
- pg_{0}file_name(CASE pg_is_in_recovery() WHEN true THEN NULL ELSE pg_current_{0}_{1}() END ),
- CASE WHEN wal.name > pg_{0}file_name(CASE pg_is_in_recovery() WHEN true THEN NULL ELSE pg_current_{0}_{1}() END ) THEN 'recycled'
- ELSE 'written'
- END AS type
- FROM pg_catalog.pg_ls_dir('pg_{0}') AS wal(name)
- WHERE name ~ '^[0-9A-F]{{24}}$'
- ORDER BY (pg_stat_file('pg_{0}/'||name)).modification, wal.name DESC) sub;
-""",
- ARCHIVE="""
-SELECT
- CAST(COUNT(*) AS INT) AS file_count,
- CAST(COALESCE(SUM(CAST(archive_file ~ $r$\.ready$$r$ as INT)), 0) AS INT) AS ready_count,
- CAST(COALESCE(SUM(CAST(archive_file ~ $r$\.done$$r$ AS INT)), 0) AS INT) AS done_count
-FROM
- pg_catalog.pg_ls_dir('pg_{0}/archive_status') AS archive_files (archive_file);
-""",
- BACKENDS="""
-SELECT
- count(*) - (SELECT count(*) FROM pg_stat_activity WHERE state = 'idle') AS backends_active,
- (SELECT count(*) FROM pg_stat_activity WHERE state = 'idle' ) AS backends_idle
-FROM pg_stat_activity;
-""",
- TABLE_STATS="""
-SELECT
- ((sum(relpages) * 8) * 1024) AS table_size,
- count(1) AS table_count
-FROM pg_class
-WHERE relkind IN ('r', 't');
-""",
- INDEX_STATS="""
-SELECT
- ((sum(relpages) * 8) * 1024) AS index_size,
- count(1) AS index_count
-FROM pg_class
-WHERE relkind = 'i';""",
- DATABASE="""
-SELECT
- datname AS database_name,
- numbackends AS connections,
- xact_commit AS xact_commit,
- xact_rollback AS xact_rollback,
- blks_read AS blks_read,
- blks_hit AS blks_hit,
- tup_returned AS tup_returned,
- tup_fetched AS tup_fetched,
- tup_inserted AS tup_inserted,
- tup_updated AS tup_updated,
- tup_deleted AS tup_deleted,
- conflicts AS conflicts,
- pg_database_size(datname) AS size,
- temp_files AS temp_files,
- temp_bytes AS temp_bytes
-FROM pg_stat_database
-WHERE datname IN %(databases)s
-;
-""",
- BGWRITER="""
-SELECT
- checkpoints_timed AS checkpoint_scheduled,
- checkpoints_req AS checkpoint_requested,
- buffers_checkpoint * current_setting('block_size')::numeric buffers_checkpoint,
- buffers_clean * current_setting('block_size')::numeric buffers_clean,
- maxwritten_clean,
- buffers_backend * current_setting('block_size')::numeric buffers_backend,
- buffers_alloc * current_setting('block_size')::numeric buffers_alloc,
- buffers_backend_fsync
-FROM pg_stat_bgwriter;
-""",
- LOCKS="""
-SELECT
- pg_database.datname as database_name,
- mode,
- count(mode) AS locks_count
-FROM pg_locks
- INNER JOIN pg_database ON pg_database.oid = pg_locks.database
-GROUP BY datname, mode
-ORDER BY datname, mode;
-""",
- FIND_DATABASES="""
-SELECT datname
-FROM pg_stat_database
-WHERE has_database_privilege((SELECT current_user), datname, 'connect')
-AND NOT datname ~* '^template\d+';
-""",
- FIND_STANDBY="""
-SELECT application_name
-FROM pg_stat_replication
-WHERE application_name IS NOT NULL
-GROUP BY application_name;
-""",
- FIND_REPLICATION_SLOT="""
-SELECT slot_name
-FROM pg_replication_slots;
-""",
- STANDBY_DELTA="""
-SELECT application_name,
- pg_{0}_{1}_diff(CASE pg_is_in_recovery() WHEN true THEN pg_last_{0}_receive_{1}() ELSE pg_current_{0}_{1}() END , sent_{1}) AS sent_delta,
- pg_{0}_{1}_diff(CASE pg_is_in_recovery() WHEN true THEN pg_last_{0}_receive_{1}() ELSE pg_current_{0}_{1}() END , write_{1}) AS write_delta,
- pg_{0}_{1}_diff(CASE pg_is_in_recovery() WHEN true THEN pg_last_{0}_receive_{1}() ELSE pg_current_{0}_{1}() END , flush_{1}) AS flush_delta,
- pg_{0}_{1}_diff(CASE pg_is_in_recovery() WHEN true THEN pg_last_{0}_receive_{1}() ELSE pg_current_{0}_{1}() END , replay_{1}) AS replay_delta
-FROM pg_stat_replication
-WHERE application_name IS NOT NULL;
-""",
- REPSLOT_FILES="""
-WITH wal_size AS (
- SELECT current_setting('wal_block_size')::INT * setting::INT AS val
- FROM pg_settings
- WHERE name = 'wal_segment_size'
-)
-SELECT slot_name, slot_type, replslot_wal_keep, count(slot_file) AS replslot_files
-FROM (
- SELECT slot.slot_name, CASE WHEN slot_file <> 'state' THEN 1 END AS slot_file , slot_type,
- COALESCE (floor((pg_wal_lsn_diff (pg_current_wal_lsn (),
- slot.restart_lsn) - (pg_walfile_name_offset (restart_lsn)).file_offset) / (s.val)),
- 0) AS replslot_wal_keep
- FROM pg_replication_slots slot
- LEFT JOIN (
- SELECT slot2.slot_name,
- pg_ls_dir('pg_replslot/' || slot2.slot_name) AS slot_file
- FROM pg_replication_slots slot2
- ) files (slot_name, slot_file)
- ON slot.slot_name = files.slot_name
- CROSS JOIN wal_size s) AS d
-GROUP BY slot_name, slot_type, replslot_wal_keep;
-""",
- IF_SUPERUSER="""
-SELECT current_setting('is_superuser') = 'on' AS is_superuser;
-""",
- DETECT_SERVER_VERSION="""
-SHOW server_version_num;
-""",
- AUTOVACUUM="""
-SELECT
- count(*) FILTER (WHERE query LIKE 'autovacuum: ANALYZE%%') AS analyze,
- count(*) FILTER (WHERE query LIKE 'autovacuum: VACUUM ANALYZE%%') AS vacuum_analyze,
- count(*) FILTER (WHERE query LIKE 'autovacuum: VACUUM%%'
- AND query NOT LIKE 'autovacuum: VACUUM ANALYZE%%'
- AND query NOT LIKE '%%to prevent wraparound%%') AS vacuum,
- count(*) FILTER (WHERE query LIKE '%%to prevent wraparound%%') AS vacuum_freeze,
- count(*) FILTER (WHERE query LIKE 'autovacuum: BRIN summarize%%') AS brin_summarize
-FROM pg_stat_activity
-WHERE query NOT LIKE '%%pg_stat_activity%%';
-""",
- DIFF_LSN="""
-SELECT pg_{0}_{1}_diff(CASE pg_is_in_recovery() WHEN true THEN pg_last_{0}_receive_{1}() ELSE pg_current_{0}_{1}() END, '0/0') as wal_writes ;
-"""
-
-)
-
-
-QUERY_STATS = {
- QUERIES['DATABASE']: METRICS['DATABASE'],
- QUERIES['BACKENDS']: METRICS['BACKENDS'],
- QUERIES['LOCKS']: METRICS['LOCKS']
-}
-
-ORDER = ['db_stat_temp_files', 'db_stat_temp_bytes', 'db_stat_blks', 'db_stat_tuple_returned', 'db_stat_tuple_write',
- 'db_stat_transactions','db_stat_connections', 'database_size', 'backend_process', 'index_count', 'index_size',
- 'table_count', 'table_size', 'wal', 'wal_writes', 'archive_wal', 'checkpointer', 'stat_bgwriter_alloc', 'stat_bgwriter_checkpoint',
- 'stat_bgwriter_backend', 'stat_bgwriter_backend_fsync' , 'stat_bgwriter_bgwriter', 'stat_bgwriter_maxwritten',
- 'replication_slot', 'standby_delta', 'autovacuum']
-
-CHARTS = {
- 'db_stat_transactions': {
- 'options': [None, 'Transactions on db', 'transactions/s', 'db statistics', 'postgres.db_stat_transactions',
- 'line'],
- 'lines': [
- ['xact_commit', 'committed', 'incremental'],
- ['xact_rollback', 'rolled back', 'incremental']
- ]},
- 'db_stat_connections': {
- 'options': [None, 'Current connections to db', 'count', 'db statistics', 'postgres.db_stat_connections',
- 'line'],
- 'lines': [
- ['connections', 'connections', 'absolute']
- ]},
- 'db_stat_blks': {
- 'options': [None, 'Disk blocks reads from db', 'reads/s', 'db statistics', 'postgres.db_stat_blks', 'line'],
- 'lines': [
- ['blks_read', 'disk', 'incremental'],
- ['blks_hit', 'cache', 'incremental']
- ]},
- 'db_stat_tuple_returned': {
- 'options': [None, 'Tuples returned from db', 'tuples/s', 'db statistics', 'postgres.db_stat_tuple_returned',
- 'line'],
- 'lines': [
- ['tup_returned', 'sequential', 'incremental'],
- ['tup_fetched', 'bitmap', 'incremental']
- ]},
- 'db_stat_tuple_write': {
- 'options': [None, 'Tuples written to db', 'writes/s', 'db statistics', 'postgres.db_stat_tuple_write', 'line'],
- 'lines': [
- ['tup_inserted', 'inserted', 'incremental'],
- ['tup_updated', 'updated', 'incremental'],
- ['tup_deleted', 'deleted', 'incremental'],
- ['conflicts', 'conflicts', 'incremental']
- ]},
- 'db_stat_temp_bytes': {
- 'options': [None, 'Temp files written to disk', 'KB/s', 'db statistics', 'postgres.db_stat_temp_bytes', 'line'],
- 'lines': [
- ['temp_bytes', 'size', 'incremental', 1, 1024]
- ]},
- 'db_stat_temp_files': {
- 'options': [None, 'Temp files written to disk', 'files', 'db statistics', 'postgres.db_stat_temp_files', 'line'],
- 'lines': [
- ['temp_files', 'files', 'incremental']
- ]},
- 'database_size': {
- 'options': [None, 'Database size', 'MB', 'database size', 'postgres.db_size', 'stacked'],
- 'lines': [
- ]},
- 'backend_process': {
- 'options': [None, 'Current Backend Processes', 'processes', 'backend processes', 'postgres.backend_process',
- 'line'],
- 'lines': [
- ['backends_active', 'active', 'absolute'],
- ['backends_idle', 'idle', 'absolute']
- ]},
- 'index_count': {
- 'options': [None, 'Total indexes', 'index', 'indexes', 'postgres.index_count', 'line'],
- 'lines': [
- ['index_count', 'total', 'absolute']
- ]},
- 'index_size': {
- 'options': [None, 'Indexes size', 'MB', 'indexes', 'postgres.index_size', 'line'],
- 'lines': [
- ['index_size', 'size', 'absolute', 1, 1024 * 1024]
- ]},
- 'table_count': {
- 'options': [None, 'Total Tables', 'tables', 'tables', 'postgres.table_count', 'line'],
- 'lines': [
- ['table_count', 'total', 'absolute']
- ]},
- 'table_size': {
- 'options': [None, 'Tables size', 'MB', 'tables', 'postgres.table_size', 'line'],
- 'lines': [
- ['table_size', 'size', 'absolute', 1, 1024 * 1024]
- ]},
- 'wal': {
- 'options': [None, 'Write-Ahead Logs', 'files', 'wal', 'postgres.wal', 'line'],
- 'lines': [
- ['written_wal', 'written', 'absolute'],
- ['recycled_wal', 'recycled', 'absolute'],
- ['total_wal', 'total', 'absolute']
- ]},
- 'wal_writes': {
- 'options': [None, 'Write-Ahead Logs', 'kilobytes/s', 'wal_writes', 'postgres.wal_writes', 'line'],
- 'lines': [
- ['wal_writes', 'writes', 'incremental', 1, 1024]
- ]},
- 'archive_wal': {
- 'options': [None, 'Archive Write-Ahead Logs', 'files/s', 'archive wal', 'postgres.archive_wal', 'line'],
- 'lines': [
- ['file_count', 'total', 'incremental'],
- ['ready_count', 'ready', 'incremental'],
- ['done_count', 'done', 'incremental']
- ]},
- 'checkpointer': {
- 'options': [None, 'Checkpoints', 'writes', 'checkpointer', 'postgres.checkpointer', 'line'],
- 'lines': [
- ['checkpoint_scheduled', 'scheduled', 'incremental'],
- ['checkpoint_requested', 'requested', 'incremental']
- ]},
- 'stat_bgwriter_alloc': {
- 'options': [None, 'Buffers allocated', 'kilobytes/s', 'bgwriter', 'postgres.stat_bgwriter_alloc', 'line'],
- 'lines': [
- ['buffers_alloc', 'alloc', 'incremental', 1, 1024]
- ]},
- 'stat_bgwriter_checkpoint': {
- 'options': [None, 'Buffers written during checkpoints', 'kilobytes/s', 'bgwriter', 'postgres.stat_bgwriter_checkpoint', 'line'],
- 'lines': [
- ['buffers_checkpoint', 'checkpoint', 'incremental', 1, 1024]
- ]},
- 'stat_bgwriter_backend': {
- 'options': [None, 'Buffers written directly by a backend', 'kilobytes/s', 'bgwriter', 'postgres.stat_bgwriter_backend', 'line'],
- 'lines': [
- ['buffers_backend', 'backend', 'incremental', 1, 1024]
- ]},
- 'stat_bgwriter_backend_fsync': {
- 'options': [None, 'Fsync by backend', 'times', 'bgwriter', 'postgres.stat_bgwriter_backend_fsync', 'line'],
- 'lines': [
- ['buffers_backend_fsync', 'backend fsync', 'incremental']
- ]},
- 'stat_bgwriter_bgwriter': {
- 'options': [None, 'Buffers written by the background writer', 'kilobytes/s', 'bgwriter', 'postgres.bgwriter_bgwriter', 'line'],
- 'lines': [
- ['buffers_clean', 'clean', 'incremental', 1, 1024]
- ]},
- 'stat_bgwriter_maxwritten': {
- 'options': [None, 'Too many buffers written', 'times', 'bgwriter', 'postgres.stat_bgwriter_maxwritten', 'line'],
- 'lines': [
- ['maxwritten_clean', 'maxwritten', 'incremental']
- ]},
- 'autovacuum': {
- 'options': [None, 'Autovacuum workers', 'workers', 'autovacuum', 'postgres.autovacuum', 'line'],
- 'lines': [
- ['analyze', 'analyze', 'absolute'],
- ['vacuum', 'vacuum', 'absolute'],
- ['vacuum_analyze', 'vacuum analyze', 'absolute'],
- ['vacuum_freeze', 'vacuum freeze', 'absolute'],
- ['brin_summarize', 'brin summarize', 'absolute']
- ]},
- 'standby_delta': {
- 'options': [None, 'Standby delta', 'kilobytes', 'replication delta', 'postgres.standby_delta', 'line'],
- 'lines': [
- ['sent_delta', 'sent delta', 'absolute', 1, 1024],
- ['write_delta', 'write delta', 'absolute', 1, 1024],
- ['flush_delta', 'flush delta', 'absolute', 1, 1024],
- ['replay_delta', 'replay delta', 'absolute', 1, 1024]
- ]},
- 'replication_slot': {
- 'options': [None, 'Replication slot files', 'files', 'replication slot', 'postgres.replication_slot', 'line'],
- 'lines': [
- ['replslot_wal_keep', 'wal keeped', 'absolute'],
- ['replslot_files', 'pg_replslot files', 'absolute']
- ]}
-}
-
-
-class Service(SimpleService):
- def __init__(self, configuration=None, name=None):
- SimpleService.__init__(self, configuration=configuration, name=name)
- self.order = ORDER[:]
- self.definitions = deepcopy(CHARTS)
- self.table_stats = configuration.pop('table_stats', False)
- self.index_stats = configuration.pop('index_stats', False)
- self.database_poll = configuration.pop('database_poll', None)
- self.configuration = configuration
- self.connection = False
- self.server_version = None
- self.data = dict()
- self.locks_zeroed = dict()
- self.databases = list()
- self.secondaries = list()
- self.replication_slots = list()
- self.queries = QUERY_STATS.copy()
-
- def _connect(self):
- params = dict(user='postgres',
- database=None,
- password=None,
- host=None,
- port=5432)
- params.update(self.configuration)
-
- if not self.connection:
- try:
- self.connection = psycopg2.connect(**params)
- self.connection.set_isolation_level(extensions.ISOLATION_LEVEL_AUTOCOMMIT)
- self.connection.set_session(readonly=True)
- except OperationalError as error:
- return False, str(error)
- return True, True
-
- def check(self):
- if not PSYCOPG2:
- self.error('\'python-psycopg2\' module is needed to use postgres.chart.py')
- return False
- result, error = self._connect()
- if not result:
- conf = dict((k, (lambda k, v: v if k != 'password' else '*****')(k, v))
- for k, v in self.configuration.items())
- self.error('Failed to connect to %s. Error: %s' % (str(conf), error))
- return False
- try:
- cursor = self.connection.cursor()
- self.databases = discover_databases_(cursor, QUERIES['FIND_DATABASES'])
- is_superuser = check_if_superuser_(cursor, QUERIES['IF_SUPERUSER'])
- self.secondaries = discover_secondaries_(cursor, QUERIES['FIND_STANDBY'])
- self.server_version = detect_server_version(cursor, QUERIES['DETECT_SERVER_VERSION'])
- if self.server_version >= 94000:
- self.replication_slots = discover_replication_slots_(cursor, QUERIES['FIND_REPLICATION_SLOT'])
- cursor.close()
-
- if self.database_poll and isinstance(self.database_poll, str):
- self.databases = [dbase for dbase in self.databases if dbase in self.database_poll.split()]\
- or self.databases
-
- self.locks_zeroed = populate_lock_types(self.databases)
- self.add_additional_queries_(is_superuser)
- self.create_dynamic_charts_()
- return True
- except Exception as error:
- self.error(str(error))
- return False
-
- def add_additional_queries_(self, is_superuser):
-
- if self.server_version >= 100000:
- wal = 'wal'
- lsn = 'lsn'
- else:
- wal = 'xlog'
- lsn = 'location'
- self.queries[QUERIES['BGWRITER']] = METRICS['BGWRITER']
- self.queries[QUERIES['DIFF_LSN'].format(wal,lsn)] = METRICS['WAL_WRITES']
- self.queries[QUERIES['STANDBY_DELTA'].format(wal,lsn)] = METRICS['STANDBY_DELTA']
-
- if self.index_stats:
- self.queries[QUERIES['INDEX_STATS']] = METRICS['INDEX_STATS']
- if self.table_stats:
- self.queries[QUERIES['TABLE_STATS']] = METRICS['TABLE_STATS']
- if is_superuser:
- self.queries[QUERIES['ARCHIVE'].format(wal)] = METRICS['ARCHIVE']
- if self.server_version >= 90400:
- self.queries[QUERIES['WAL'].format(wal,lsn)] = METRICS['WAL']
- if self.server_version >= 100000:
- self.queries[QUERIES['REPSLOT_FILES']] = METRICS['REPSLOT_FILES']
- if self.server_version >= 90400:
- self.queries[QUERIES['AUTOVACUUM']] = METRICS['AUTOVACUUM']
-
- def create_dynamic_charts_(self):
-
- for database_name in self.databases[::-1]:
- self.definitions['database_size']['lines'].append([database_name + '_size',
- database_name, 'absolute', 1, 1024 * 1024])
- for chart_name in [name for name in self.order if name.startswith('db_stat')]:
- add_database_stat_chart_(order=self.order, definitions=self.definitions,
- name=chart_name, database_name=database_name)
-
- add_database_lock_chart_(order=self.order, definitions=self.definitions, database_name=database_name)
-
- for application_name in self.secondaries[::-1]:
- add_replication_delta_chart_(order=self.order, definitions=self.definitions,
- name='standby_delta', application_name=application_name)
-
- for slot_name in self.replication_slots[::-1]:
- add_replication_slot_chart_(order=self.order, definitions=self.definitions,
- name='replication_slot', slot_name=slot_name)
-
-
-
- def _get_data(self):
- result, error = self._connect()
- if result:
- cursor = self.connection.cursor(cursor_factory=DictCursor)
- try:
- self.data.update(self.locks_zeroed)
- for query, metrics in self.queries.items():
- self.query_stats_(cursor, query, metrics)
-
- except OperationalError:
- self.connection = False
- cursor.close()
- return None
- else:
- cursor.close()
- return self.data
- else:
- return None
-
- def query_stats_(self, cursor, query, metrics):
- cursor.execute(query, dict(databases=tuple(self.databases)))
- for row in cursor:
- for metric in metrics:
- if 'database_name' in row:
- dimension_id = '_'.join([row['database_name'], metric])
- elif 'application_name' in row:
- dimension_id = '_'.join([row['application_name'], metric])
- elif 'slot_name' in row:
- dimension_id = '_'.join([row['slot_name'], metric])
- else:
- dimension_id = metric
- if metric in row:
- self.data[dimension_id] = int(row[metric])
- elif 'locks_count' in row:
- self.data[dimension_id] = row['locks_count'] if metric == row['mode'] else 0
-
-
-def discover_databases_(cursor, query):
- cursor.execute(query)
- result = list()
- for db in [database[0] for database in cursor]:
- if db not in result:
- result.append(db)
- return result
-
-def discover_secondaries_(cursor, query):
- cursor.execute(query)
- result = list()
- for sc in [standby[0] for standby in cursor]:
- if sc not in result:
- result.append(sc)
- return result
-
-def discover_replication_slots_(cursor, query):
- cursor.execute(query)
- result = list()
- for slot in [replication_slot[0] for replication_slot in cursor]:
- if slot not in result:
- result.append(slot)
- return result
-
-def check_if_superuser_(cursor, query):
- cursor.execute(query)
- return cursor.fetchone()[0]
-
-def detect_server_version(cursor, query):
- cursor.execute(query)
- return int(cursor.fetchone()[0])
-
-def populate_lock_types(databases):
- result = dict()
- for database in databases:
- for lock_type in METRICS['LOCKS']:
- key = '_'.join([database, lock_type])
- result[key] = 0
-
- return result
-
-
-def add_database_lock_chart_(order, definitions, database_name):
- def create_lines(database):
- result = list()
- for lock_type in METRICS['LOCKS']:
- dimension_id = '_'.join([database, lock_type])
- result.append([dimension_id, lock_type, 'absolute'])
- return result
-
- chart_name = database_name + '_locks'
- order.insert(-1, chart_name)
- definitions[chart_name] = {
- 'options':
- [None, 'Locks on db: ' + database_name, 'locks', 'db ' + database_name, 'postgres.db_locks', 'line'],
- 'lines': create_lines(database_name)
- }
-
-
-def add_database_stat_chart_(order, definitions, name, database_name):
- def create_lines(database, lines):
- result = list()
- for line in lines:
- new_line = ['_'.join([database, line[0]])] + line[1:]
- result.append(new_line)
- return result
-
- chart_template = CHARTS[name]
- chart_name = '_'.join([database_name, name])
- order.insert(0, chart_name)
- name, title, units, family, context, chart_type = chart_template['options']
- definitions[chart_name] = {
- 'options': [name, title + ': ' + database_name, units, 'db ' + database_name, context, chart_type],
- 'lines': create_lines(database_name, chart_template['lines'])}
-
-def add_replication_delta_chart_(order, definitions, name, application_name):
- def create_lines(standby, lines):
- result = list()
- for line in lines:
- new_line = ['_'.join([standby, line[0]])] + line[1:]
- result.append(new_line)
- return result
-
- chart_template = CHARTS[name]
- chart_name = '_'.join([application_name, name])
- position = order.index('database_size')
- order.insert(position, chart_name)
- name, title, units, family, context, chart_type = chart_template['options']
- definitions[chart_name] = {
- 'options': [name, title + ': ' + application_name, units, 'replication delta', context, chart_type],
- 'lines': create_lines(application_name, chart_template['lines'])}
-
-def add_replication_slot_chart_(order, definitions, name, slot_name):
- def create_lines(slot, lines):
- result = list()
- for line in lines:
- new_line = ['_'.join([slot, line[0]])] + line[1:]
- result.append(new_line)
- return result
-
- chart_template = CHARTS[name]
- chart_name = '_'.join([slot_name, name])
- position = order.index('database_size')
- order.insert(position, chart_name)
- name, title, units, family, context, chart_type = chart_template['options']
- definitions[chart_name] = {
- 'options': [name, title + ': ' + slot_name, units, 'replication slot files', context, chart_type],
- 'lines': create_lines(slot_name, chart_template['lines'])}