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cleaners.py

# coding=utf-8
#
# Copyright © Cloud Linux GmbH & Cloud Linux Software, Inc 2010-2019 All Rights Reserved
#
# Licensed under CLOUD LINUX LICENSE AGREEMENT
# http://cloudlinux.com/docs/LICENSE.TXT

import logging
import os
import timeit

from sqlalchemy import func
from sqlalchemy.exc import OperationalError
from sqlalchemy.orm import sessionmaker

import lvestats.lib.snapshot
from lvestats.core.plugin import LveStatsPlugin, LveStatsPluginTerminated
from lvestats.lib.commons.func import reboot_lock
from lvestats.orm import history, history_gov, history_x60, incident

__author__ = 'shaman'

class HistoryCleaner(LveStatsPlugin):
    def __init__(self):
        self.period = 60 * 60  # 1 hour
        self.batch = 6 * 60 * 60  # 6 hours
        self.execute_timeout = 20
        self.keep_history_days = 30  # 1 months to keep history, by default
        self.db_engine = None
        self.log = logging.getLogger('HistoryCleaner')
        self.db_type = 'sqlite'
        self.server_id = None
        # db_type = mysql
        # db_type = postgresql

def set_db_engine(self, engine):
        self.db_engine = engine

def set_config(self, config):
        self.keep_history_days = int(config.get('keep_history_days', self.keep_history_days))
        self.period = int(config.get('period', 60)) * 60
        self.db_type = config.get('db_type', self.db_type)
        self.server_id = config.get('server_id', 'localhost')

def time_threshold(self):
        return int(self.now - self.keep_history_days * 24 * 60 * 60)

@staticmethod
    def clean_old_snapshots(ts_to):
        for uid in os.listdir(lvestats.lib.snapshot.SNAPSHOT_PATH):
            snap = lvestats.lib.snapshot.Snapshot({'uid': uid})
            snap.delete_old(ts_to)

def execute(self, lve_data):
        t_min = self.time_threshold()
        # tables to clean: history, history_gov, incident, snapshot
        self.log.debug('Records with timestamp less then %d will be erased', t_min)
        if os.path.exists(lvestats.lib.snapshot.SNAPSHOT_PATH):
            self.clean_old_snapshots(t_min)
        self.log.debug('Deleting old records from database')
        with reboot_lock():
            session = sessionmaker(bind=self.db_engine)()
            start_time = timeit.default_timer()
            try:
                self.delete(session, history_x60, history_x60.created, t_min)
                self.delete(session, history_gov, history_gov.ts, t_min)
                self.delete(session, incident, incident.incident_end_time, t_min)
                session.commit()

first_created = (
                    session.query(func.min(history.created)).filter(history.server_id == self.server_id).one()[0]
                    or t_min
                )
                for iteration, timestamp in enumerate(range(int(first_created) + self.batch, int(t_min), self.batch)):
                    self.delete(session, history, history.created, timestamp)
                    session.commit()
                    if timeit.default_timer() - start_time > self.execute_timeout:
                        self.log.debug(
                            "Iterations: %s. Deleted: %sh", iteration, (timestamp - first_created) / (60 * 60)
                        )
                        break
                else:
                    self.delete(session, history, history.created, t_min)
                    session.commit()
            except OperationalError as e:
                session.rollback()
                self.log.warning(str(e))
            except LveStatsPluginTerminated as e:
                self.log.debug('Cleaner terminated. Trying to rollback')
                session.rollback()
                session.close()
                raise LveStatsPluginTerminated() from e
            finally:
                elapsed = (timeit.default_timer() - start_time) * 1000  # Milliseconds
                self.log.debug('Execution time: %d', elapsed)
                session.close()

def delete(self, session, table, ts_column, limit):
        session.query(table).filter(ts_column < limit, table.server_id == self.server_id).delete(
            synchronize_session=False
        )

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__pycache__	dir	-	root/root	0755	2025-06-20 10:30:47
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__init__.py	text/plain	219 B	root/root	0644	2025-05-30 10:30:46
aggregators.py	text/x-script.python	5.45 KB	root/root	0644	2025-05-30 10:30:46
analyzers.py	text/x-script.python	9.38 KB	root/root	0644	2025-05-30 10:30:46
cleaners.py	text/x-script.python	4.09 KB	root/root	0644	2025-05-30 10:30:46
cm_collector.py	text/x-script.python	10.58 KB	root/root	0644	2025-05-30 10:30:46
collectors.py	text/x-script.python	3.31 KB	root/root	0644	2025-05-30 10:30:46
dbgov_saver.py	text/x-script.python	6.74 KB	root/root	0644	2025-05-30 10:30:46
dbsaver.py	text/x-script.python	5.65 KB	root/root	0644	2025-05-30 10:30:46
dbsaver_x60.py	text/x-script.python	10.03 KB	root/root	0644	2025-05-30 10:30:46
lvestats_memory_usage.py	text/x-script.python	1.54 KB	root/root	0644	2025-05-30 10:30:46
persistors.py	text/x-script.python	13.51 KB	root/root	0644	2025-05-30 10:30:46
snapshot_saver.py	text/x-script.python	16.69 KB	root/root	0644	2025-05-30 10:30:46
statsnotifier.py	text/x-script.python	50.28 KB	root/root	0644	2025-05-30 10:30:46