pg_probackup/tests/ptrack_clean.py

import os
import unittest
from .helpers.ptrack_helpers import ProbackupTest, idx_ptrack
import time


module_name = 'ptrack_clean'


class SimpleTest(ProbackupTest, unittest.TestCase):

    # @unittest.skip("skip")
    # @unittest.expectedFailure
    def test_ptrack_clean(self):
        """Take backups of every available types and check that PTRACK is clean"""
        fname = self.id().split('.')[3]
        node = self.make_simple_node(
            base_dir="{0}/{1}/node".format(module_name, fname),
            set_replication=True,
            initdb_params=['--data-checksums'],
            pg_options={
                'ptrack_enable': 'on',
                'wal_level': 'replica',
                'max_wal_senders': '2'})
        backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
        self.init_pb(backup_dir)
        self.add_instance(backup_dir, 'node', node)
        self.set_archiving(backup_dir, 'node', node)
        node.start()

        self.create_tblspace_in_node(node, 'somedata')

        # Create table and indexes
        node.safe_psql(
            "postgres",
            "create extension bloom; create sequence t_seq; "
            "create table t_heap tablespace somedata "
            "as select i as id, nextval('t_seq') as t_seq, "
            "md5(i::text) as text, "
            "md5(repeat(i::text,10))::tsvector as tsvector "
            "from generate_series(0,2560) i")
        for i in idx_ptrack:
            if idx_ptrack[i]['type'] != 'heap' and idx_ptrack[i]['type'] != 'seq':
                node.safe_psql(
                    "postgres",
                    "create index {0} on {1} using {2}({3}) "
                    "tablespace somedata".format(
                        i, idx_ptrack[i]['relation'],
                        idx_ptrack[i]['type'],
                        idx_ptrack[i]['column']))

        # Take FULL backup to clean every ptrack
        self.backup_node(
            backup_dir, 'node', node,
            options=['-j10', '--stream'])
        node.safe_psql('postgres', 'checkpoint')

        for i in idx_ptrack:
            # get fork size and calculate it in pages
            idx_ptrack[i]['size'] = self.get_fork_size(node, i)
            # get path to heap and index files
            idx_ptrack[i]['path'] = self.get_fork_path(node, i)
            # get ptrack for every idx
            idx_ptrack[i]['ptrack'] = self.get_ptrack_bits_per_page_for_fork(
                node, idx_ptrack[i]['path'], [idx_ptrack[i]['size']])
            self.check_ptrack_clean(idx_ptrack[i], idx_ptrack[i]['size'])

        # Update everything and vacuum it
        node.safe_psql(
            'postgres',
            "update t_heap set t_seq = nextval('t_seq'), "
            "text = md5(text), "
            "tsvector = md5(repeat(tsvector::text, 10))::tsvector;")
        node.safe_psql('postgres', 'vacuum t_heap')

        # Take PTRACK backup to clean every ptrack
        backup_id = self.backup_node(
            backup_dir, 'node', node, backup_type='ptrack',
            options=['-j10', '--log-level-file=verbose'])
        node.safe_psql('postgres', 'checkpoint')

        for i in idx_ptrack:
            # get new size of heap and indexes and calculate it in pages
            idx_ptrack[i]['size'] = self.get_fork_size(node, i)
            # update path to heap and index files in case they`ve changed
            idx_ptrack[i]['path'] = self.get_fork_path(node, i)
            # # get ptrack for every idx
            idx_ptrack[i]['ptrack'] = self.get_ptrack_bits_per_page_for_fork(
                node, idx_ptrack[i]['path'], [idx_ptrack[i]['size']])
            # check that ptrack bits are cleaned
            self.check_ptrack_clean(idx_ptrack[i], idx_ptrack[i]['size'])

        # Update everything and vacuum it
        node.safe_psql(
            'postgres',
            "update t_heap set t_seq = nextval('t_seq'), "
            "text = md5(text), "
            "tsvector = md5(repeat(tsvector::text, 10))::tsvector;")
        node.safe_psql('postgres', 'vacuum t_heap')

        # Take PAGE backup to clean every ptrack
        self.backup_node(
            backup_dir, 'node', node,
            backup_type='page', options=['-j10'])
        node.safe_psql('postgres', 'checkpoint')

        for i in idx_ptrack:
            # get new size of heap and indexes and calculate it in pages
            idx_ptrack[i]['size'] = self.get_fork_size(node, i)
            # update path to heap and index files in case they`ve changed
            idx_ptrack[i]['path'] = self.get_fork_path(node, i)
            # # get ptrack for every idx
            idx_ptrack[i]['ptrack'] = self.get_ptrack_bits_per_page_for_fork(
                node, idx_ptrack[i]['path'], [idx_ptrack[i]['size']])
            # check that ptrack bits are cleaned
            self.check_ptrack_clean(idx_ptrack[i], idx_ptrack[i]['size'])

        # Clean after yourself
        self.del_test_dir(module_name, fname)

    # @unittest.skip("skip")
    # @unittest.expectedFailure
    def test_ptrack_clean_replica(self):
        """Take backups of every available types from master and check that PTRACK on replica is clean"""
        fname = self.id().split('.')[3]
        master = self.make_simple_node(
            base_dir="{0}/{1}/master".format(module_name, fname),
            set_replication=True,
            initdb_params=['--data-checksums'],
            pg_options={
                'ptrack_enable': 'on',
                'wal_level': 'replica',
                'max_wal_senders': '2'})
        backup_dir = os.path.join(self.tmp_path, module_name, fname, 'backup')
        self.init_pb(backup_dir)
        self.add_instance(backup_dir, 'master', master)
        master.start()

        self.backup_node(backup_dir, 'master', master, options=['--stream'])

        replica = self.make_simple_node(
            base_dir="{0}/{1}/replica".format(module_name, fname))
        replica.cleanup()

        self.restore_node(backup_dir, 'master', replica)

        self.add_instance(backup_dir, 'replica', replica)
        self.set_replica(master, replica, synchronous=True)
        self.set_archiving(backup_dir, 'replica', replica, replica=True)
        replica.start()

        # Create table and indexes
        master.safe_psql(
            "postgres",
            "create extension bloom; create sequence t_seq; "
            "create table t_heap as select i as id, "
            "nextval('t_seq') as t_seq, md5(i::text) as text, "
            "md5(repeat(i::text,10))::tsvector as tsvector "
            "from generate_series(0,2560) i")
        for i in idx_ptrack:
            if idx_ptrack[i]['type'] != 'heap' and idx_ptrack[i]['type'] != 'seq':
                master.safe_psql(
                    "postgres",
                    "create index {0} on {1} using {2}({3})".format(
                        i, idx_ptrack[i]['relation'],
                        idx_ptrack[i]['type'],
                        idx_ptrack[i]['column']))

        # Take FULL backup to clean every ptrack
        self.backup_node(
            backup_dir,
            'replica',
            replica,
            options=[
                '-j10', '--stream',
                '--master-host=localhost',
                '--master-db=postgres',
                '--master-port={0}'.format(master.port)])
        master.safe_psql('postgres', 'checkpoint')

        for i in idx_ptrack:
            # get fork size and calculate it in pages
            idx_ptrack[i]['size'] = self.get_fork_size(replica, i)
            # get path to heap and index files
            idx_ptrack[i]['path'] = self.get_fork_path(replica, i)
            # get ptrack for every idx
            idx_ptrack[i]['ptrack'] = self.get_ptrack_bits_per_page_for_fork(
                replica, idx_ptrack[i]['path'], [idx_ptrack[i]['size']])
            self.check_ptrack_clean(idx_ptrack[i], idx_ptrack[i]['size'])

        # Update everything and vacuum it
        master.safe_psql(
            'postgres',
            "update t_heap set t_seq = nextval('t_seq'), "
            "text = md5(text), "
            "tsvector = md5(repeat(tsvector::text, 10))::tsvector;")
        master.safe_psql('postgres', 'vacuum t_heap')

        # Take PTRACK backup to clean every ptrack
        backup_id = self.backup_node(
            backup_dir,
            'replica',
            replica,
            backup_type='ptrack',
            options=[
                '-j10', '--stream',
                '--master-host=localhost',
                '--master-db=postgres',
                '--master-port={0}'.format(master.port)])
        master.safe_psql('postgres', 'checkpoint')

        for i in idx_ptrack:
            # get new size of heap and indexes and calculate it in pages
            idx_ptrack[i]['size'] = self.get_fork_size(replica, i)
            # update path to heap and index files in case they`ve changed
            idx_ptrack[i]['path'] = self.get_fork_path(replica, i)
            # # get ptrack for every idx
            idx_ptrack[i]['ptrack'] = self.get_ptrack_bits_per_page_for_fork(
                replica, idx_ptrack[i]['path'], [idx_ptrack[i]['size']])
            # check that ptrack bits are cleaned
            self.check_ptrack_clean(idx_ptrack[i], idx_ptrack[i]['size'])

        # Update everything and vacuum it
        master.safe_psql(
            'postgres',
            "update t_heap set t_seq = nextval('t_seq'), text = md5(text), "
            "tsvector = md5(repeat(tsvector::text, 10))::tsvector;")
        master.safe_psql('postgres', 'vacuum t_heap')
        master.safe_psql('postgres', 'checkpoint')

        # Take PAGE backup to clean every ptrack
        self.backup_node(
            backup_dir,
            'replica',
            replica,
            backup_type='page',
            options=[
                '-j10', '--master-host=localhost',
                '--master-db=postgres',
                '--master-port={0}'.format(master.port)])
        master.safe_psql('postgres', 'checkpoint')

        for i in idx_ptrack:
            # get new size of heap and indexes and calculate it in pages
            idx_ptrack[i]['size'] = self.get_fork_size(replica, i)
            # update path to heap and index files in case they`ve changed
            idx_ptrack[i]['path'] = self.get_fork_path(replica, i)
            # # get ptrack for every idx
            idx_ptrack[i]['ptrack'] = self.get_ptrack_bits_per_page_for_fork(
                replica, idx_ptrack[i]['path'], [idx_ptrack[i]['size']])
            # check that ptrack bits are cleaned
            self.check_ptrack_clean(idx_ptrack[i], idx_ptrack[i]['size'])

        # Clean after yourself
        self.del_test_dir(module_name, fname)