mirror of
https://github.com/postgrespro/pg_probackup.git
synced 2024-12-01 09:51:43 +02:00
647 lines
24 KiB
Python
647 lines
24 KiB
Python
# you need os for unittest to work
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import os
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from sys import exit, argv, version_info
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import subprocess
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import shutil
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import six
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import testgres
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import hashlib
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import re
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import pwd
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idx_ptrack = {
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't_heap': {
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'type': 'heap'
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},
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't_btree': {
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'type': 'btree',
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'column': 'text',
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'relation': 't_heap'
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},
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't_seq': {
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'type': 'seq',
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'column': 't_seq',
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'relation': 't_heap'
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},
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't_spgist': {
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'type': 'spgist',
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'column': 'text',
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'relation': 't_heap'
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},
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't_brin': {
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'type': 'brin',
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'column': 'text',
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'relation': 't_heap'
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},
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't_gist': {
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'type': 'gist',
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'column': 'tsvector',
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'relation': 't_heap'
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},
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't_gin': {
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'type': 'gin',
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'column': 'tsvector',
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'relation': 't_heap'
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},
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}
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archive_script = """
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#!/bin/bash
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count=$(ls {backup_dir}/test00* | wc -l)
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if [ $count -ge {count_limit} ]
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then
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exit 1
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else
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cp $1 {backup_dir}/wal/{node_name}/$2
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count=$((count+1))
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touch {backup_dir}/test00$count
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exit 0
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fi
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"""
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warning = """
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Wrong splint in show_pb
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Original Header:
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{header}
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Original Body:
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{body}
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Splitted Header
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{header_split}
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Splitted Body
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{body_split}
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"""
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# You can lookup error message and cmdline in exception object attributes
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class ProbackupException(Exception):
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def __init__(self, message, cmd):
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self.message = message
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self.cmd = cmd
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#need that to make second raise
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def __str__(self):
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return '\n ERROR: {0}\n CMD: {1}'.format(repr(self.message), self.cmd)
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def dir_files(base_dir):
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out_list = []
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for dir_name, subdir_list, file_list in os.walk(base_dir):
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if dir_name != base_dir:
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out_list.append(os.path.relpath(dir_name, base_dir))
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for fname in file_list:
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out_list.append(os.path.relpath(os.path.join(dir_name, fname), base_dir))
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out_list.sort()
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return out_list
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class ProbackupTest(object):
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def __init__(self, *args, **kwargs):
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super(ProbackupTest, self).__init__(*args, **kwargs)
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if '-v' in argv or '--verbose' in argv:
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self.verbose = True
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else:
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self.verbose = False
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self.test_env = os.environ.copy()
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envs_list = [
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"LANGUAGE",
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"LC_ALL",
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"PGCONNECT_TIMEOUT",
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"PGDATA",
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"PGDATABASE",
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"PGHOSTADDR",
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"PGREQUIRESSL",
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"PGSERVICE",
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"PGSSLMODE",
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"PGUSER",
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"PGPORT",
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"PGHOST"
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]
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for e in envs_list:
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try:
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del self.test_env[e]
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except:
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pass
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self.test_env["LC_MESSAGES"] = "C"
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self.test_env["LC_TIME"] = "C"
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self.paranoia = False
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if 'PGPRO_PARANOIA_MODE' in self.test_env:
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if self.test_env['PGPRO_PARANOIA_MODE'] == 'ON':
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self.paranoia = True
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self.helpers_path = os.path.dirname(os.path.realpath(__file__))
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self.dir_path = os.path.abspath(os.path.join(self.helpers_path, os.pardir))
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self.tmp_path = os.path.abspath(os.path.join(self.dir_path, 'tmp_dirs'))
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try:
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os.makedirs(os.path.join(self.dir_path, 'tmp_dirs'))
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except:
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pass
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self.user = self.get_username()
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self.probackup_path = None
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if "PGPROBACKUPBIN" in self.test_env:
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if os.path.isfile(self.test_env["PGPROBACKUPBIN"]) and os.access(self.test_env["PGPROBACKUPBIN"], os.X_OK):
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self.probackup_path = self.test_env["PGPROBACKUPBIN"]
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else:
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if self.verbose:
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print('PGPROBINDIR is not an executable file')
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if not self.probackup_path:
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self.probackup_path = os.path.abspath(os.path.join(
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self.dir_path, "../pg_probackup"))
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def make_simple_node(
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self,
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base_dir=None,
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set_replication=False,
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initdb_params=[],
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pg_options={}):
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real_base_dir = os.path.join(self.tmp_path, base_dir)
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shutil.rmtree(real_base_dir, ignore_errors=True)
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node = testgres.get_new_node('test', base_dir=real_base_dir)
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node.init(initdb_params=initdb_params)
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# Sane default parameters, not a shit with fsync = off from testgres
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node.append_conf("postgresql.auto.conf", "shared_buffers = 10MB")
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node.append_conf("postgresql.auto.conf", "fsync = on")
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node.append_conf("postgresql.auto.conf", "wal_level = minimal")
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node.append_conf("postgresql.auto.conf", "log_line_prefix = '%t [%p]: [%l-1] '")
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node.append_conf("postgresql.auto.conf", "log_statement = none")
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node.append_conf("postgresql.auto.conf", "log_duration = on")
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node.append_conf("postgresql.auto.conf", "log_min_duration_statement = 0")
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node.append_conf("postgresql.auto.conf", "log_connections = on")
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node.append_conf("postgresql.auto.conf", "log_disconnections = on")
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# Apply given parameters
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for key, value in six.iteritems(pg_options):
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node.append_conf("postgresql.auto.conf", "%s = %s" % (key, value))
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# Allow replication in pg_hba.conf
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if set_replication:
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node.set_replication_conf()
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node.append_conf("postgresql.auto.conf", "max_wal_senders = 10")
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return node
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def create_tblspace_in_node(self, node, tblspc_name, cfs=False):
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res = node.execute(
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"postgres", "select exists (select 1 from pg_tablespace where spcname = '{0}')".format(
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tblspc_name))
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# Check that tablespace with name 'tblspc_name' do not exists already
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self.assertFalse(res[0][0], 'Tablespace "{0}" already exists'.format(tblspc_name))
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tblspc_path = os.path.join(node.base_dir, '{0}'.format(tblspc_name))
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cmd = "CREATE TABLESPACE {0} LOCATION '{1}'".format(tblspc_name, tblspc_path)
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if cfs:
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cmd += " with (compression=true)"
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os.makedirs(tblspc_path)
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res = node.safe_psql("postgres", cmd)
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# Check that tablespace was successfully created
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# self.assertEqual(res[0], 0, 'Failed to create tablespace with cmd: {0}'.format(cmd))
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def get_tblspace_path(self, node, tblspc_name):
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return os.path.join(node.base_dir, tblspc_name)
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def get_fork_size(self, node, fork_name):
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return node.execute("postgres",
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"select pg_relation_size('{0}')/8192".format(fork_name))[0][0]
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def get_fork_path(self, node, fork_name):
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return os.path.join(node.base_dir, 'data',
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node.execute("postgres", "select pg_relation_filepath('{0}')".format(fork_name))[0][0])
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def get_md5_per_page_for_fork(self, file, size):
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file = os.open(file, os.O_RDONLY)
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offset = 0
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md5_per_page = {}
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for page in range(size):
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md5_per_page[page] = hashlib.md5(os.read(file, 8192)).hexdigest()
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offset += 8192
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os.lseek(file, offset, 0)
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os.close(file)
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return md5_per_page
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def get_ptrack_bits_per_page_for_fork(self, node, file, size=[]):
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if len(size) > 1:
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if size[0] > size[1]:
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size = size[0]
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else:
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size = size[1]
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else:
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size = size[0]
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if self.get_pgpro_edition(node) == 'enterprise':
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header_size = 48
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else:
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header_size = 24
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ptrack_bits_for_fork = []
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byte_size = os.path.getsize(file + '_ptrack')
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byte_size_minus_header = byte_size - header_size
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file = os.open(file + '_ptrack', os.O_RDONLY)
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os.lseek(file, header_size, 0)
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lots_of_bytes = os.read(file, byte_size_minus_header)
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byte_list = [lots_of_bytes[i:i+1] for i in range(len(lots_of_bytes))]
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for byte in byte_list:
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#byte_inverted = bin(int(byte, base=16))[2:][::-1]
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#bits = (byte >> x) & 1 for x in range(7, -1, -1)
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byte_inverted = bin(ord(byte))[2:].rjust(8, '0')[::-1]
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for bit in byte_inverted:
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if len(ptrack_bits_for_fork) < size:
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ptrack_bits_for_fork.append(int(bit))
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os.close(file)
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return ptrack_bits_for_fork
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def check_ptrack_sanity(self, idx_dict):
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success = True
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if idx_dict['new_size'] > idx_dict['old_size']:
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size = idx_dict['new_size']
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else:
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size = idx_dict['old_size']
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for PageNum in range(size):
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if PageNum not in idx_dict['old_pages']:
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# Page was not present before, meaning that relation got bigger
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# Ptrack should be equal to 1
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if idx_dict['ptrack'][PageNum] != 1:
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if self.verbose:
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print('Page Number {0} of type {1} was added, but ptrack value is {2}. THIS IS BAD'.format(
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PageNum, idx_dict['type'], idx_dict['ptrack'][PageNum]))
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print(idx_dict)
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success = False
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continue
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if PageNum not in idx_dict['new_pages']:
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# Page is not present now, meaning that relation got smaller
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# Ptrack should be equal to 0, We are not freaking out about false positive stuff
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if idx_dict['ptrack'][PageNum] != 0:
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if self.verbose:
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print('Page Number {0} of type {1} was deleted, but ptrack value is {2}'.format(
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PageNum, idx_dict['type'], idx_dict['ptrack'][PageNum]))
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continue
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# Ok, all pages in new_pages that do not have corresponding page in old_pages
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# are been dealt with. We can now safely proceed to comparing old and new pages
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if idx_dict['new_pages'][PageNum] != idx_dict['old_pages'][PageNum]:
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# Page has been changed, meaning that ptrack should be equal to 1
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if idx_dict['ptrack'][PageNum] != 1:
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if self.verbose:
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print('Page Number {0} of type {1} was changed, but ptrack value is {2}. THIS IS BAD'.format(
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PageNum, idx_dict['type'], idx_dict['ptrack'][PageNum]))
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print(idx_dict)
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if PageNum == 0 and idx_dict['type'] == 'spgist':
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if self.verbose:
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print('SPGIST is a special snowflake, so don`t fret about losing ptrack for blknum 0')
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continue
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success = False
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else:
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# Page has not been changed, meaning that ptrack should be equal to 0
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if idx_dict['ptrack'][PageNum] != 0:
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if self.verbose:
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print('Page Number {0} of type {1} was not changed, but ptrack value is {2}'.format(
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PageNum, idx_dict['type'], idx_dict['ptrack'][PageNum]))
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print(idx_dict)
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self.assertEqual(success, True, 'Ptrack of index {0} does not correspond to state of its pages.\n Gory Details: \n{1}'.format(
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idx_dict['type'], idx_dict))
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def check_ptrack_recovery(self, idx_dict):
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size = idx_dict['size']
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for PageNum in range(size):
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if idx_dict['ptrack'][PageNum] != 1:
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self.assertTrue(False, 'Recovery for Page Number {0} of Type {1} was conducted, but ptrack value is {2}. THIS IS BAD\n IDX_DICT: {3}'.format(
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PageNum, idx_dict['type'], idx_dict['ptrack'][PageNum], idx_dict))
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def check_ptrack_clean(self, idx_dict, size):
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for PageNum in range(size):
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if idx_dict['ptrack'][PageNum] != 0:
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self.assertTrue(False, 'Ptrack for Page Number {0} of Type {1} should be clean, but ptrack value is {2}.\n THIS IS BAD\n IDX_DICT: {3}'.format(
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PageNum, idx_dict['type'], idx_dict['ptrack'][PageNum], idx_dict))
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def run_pb(self, command):
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try:
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self.cmd = [' '.join(map(str,[self.probackup_path] + command))]
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if self.verbose:
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print(self.cmd)
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self.output = subprocess.check_output(
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[self.probackup_path] + command,
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stderr=subprocess.STDOUT,
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env=self.test_env
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).decode("utf-8")
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if command[0] == 'backup':
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# return backup ID
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for line in self.output.splitlines():
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if 'INFO: Backup' and 'completed' in line:
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return line.split()[2]
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else:
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return self.output
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except subprocess.CalledProcessError as e:
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raise ProbackupException(e.output.decode("utf-8"), self.cmd)
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def init_pb(self, backup_dir):
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shutil.rmtree(backup_dir, ignore_errors=True)
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return self.run_pb([
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"init",
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"-B", backup_dir
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])
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def add_instance(self, backup_dir, instance, node):
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return self.run_pb([
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"add-instance",
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"--instance={0}".format(instance),
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"-B", backup_dir,
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"-D", node.data_dir
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])
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def del_instance(self, backup_dir, instance):
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return self.run_pb([
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"del-instance",
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"--instance={0}".format(instance),
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"-B", backup_dir
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])
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def clean_pb(self, backup_dir):
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shutil.rmtree(backup_dir, ignore_errors=True)
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def backup_node(self, backup_dir, instance, node, data_dir=False, backup_type="full", options=[]):
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if not node and not data_dir:
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print('You must provide ether node or data_dir for backup')
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exit(1)
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if node:
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pgdata = node.data_dir
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if data_dir:
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pgdata = data_dir
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cmd_list = [
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"backup",
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"-B", backup_dir,
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# "-D", pgdata,
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"-p", "%i" % node.port,
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"-d", "postgres",
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"--instance={0}".format(instance)
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]
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if backup_type:
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cmd_list += ["-b", backup_type]
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return self.run_pb(cmd_list + options)
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def restore_node(self, backup_dir, instance, node=False, data_dir=None, backup_id=None, options=[]):
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if data_dir is None:
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data_dir = node.data_dir
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cmd_list = [
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"restore",
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"-B", backup_dir,
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"-D", data_dir,
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"--instance={0}".format(instance)
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]
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if backup_id:
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cmd_list += ["-i", backup_id]
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return self.run_pb(cmd_list + options)
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def show_pb(self, backup_dir, instance=None, backup_id=None, options=[], as_text=False):
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backup_list = []
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specific_record = {}
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cmd_list = [
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"show",
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"-B", backup_dir,
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]
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if instance:
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cmd_list += ["--instance={0}".format(instance)]
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if backup_id:
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cmd_list += ["-i", backup_id]
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if as_text:
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# You should print it when calling as_text=true
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return self.run_pb(cmd_list + options)
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# get show result as list of lines
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show_splitted = self.run_pb(cmd_list + options).splitlines()
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if instance is not None and backup_id is None:
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# cut header(ID, Mode, etc) from show as single string
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header = show_splitted[1:2][0]
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# cut backup records from show as single list with string for every backup record
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body = show_splitted[3:]
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# inverse list so oldest record come first
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body = body[::-1]
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# split string in list with string for every header element
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header_split = re.split(" +", header)
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# Remove empty items
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for i in header_split:
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if i == '':
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header_split.remove(i)
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for backup_record in body:
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# split string in list with string for every backup record element
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backup_record_split = re.split(" +", backup_record)
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# Remove empty items
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for i in backup_record_split:
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if i == '':
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backup_record_split.remove(i)
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if len(header_split) != len(backup_record_split):
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print(warning.format(
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header=header, body=body,
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header_split=header_split, body_split=backup_record_split))
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exit(1)
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new_dict = dict(zip(header_split, backup_record_split))
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backup_list.append(new_dict)
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return backup_list
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else:
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# cut out empty lines and lines started with #
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# and other garbage then reconstruct it as dictionary
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# print show_splitted
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sanitized_show = [item for item in show_splitted if item]
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sanitized_show = [item for item in sanitized_show if not item.startswith('#')]
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# print sanitized_show
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for line in sanitized_show:
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name, var = line.partition(" = ")[::2]
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var = var.strip('"')
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var = var.strip("'")
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specific_record[name.strip()] = var
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return specific_record
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def validate_pb(self, backup_dir, instance=None, backup_id=None, options=[]):
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cmd_list = [
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"validate",
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"-B", backup_dir
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]
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if instance:
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cmd_list += ["--instance={0}".format(instance)]
|
|
if backup_id:
|
|
cmd_list += ["-i", backup_id]
|
|
|
|
return self.run_pb(cmd_list + options)
|
|
|
|
def delete_pb(self, backup_dir, instance, backup_id=None, options=[]):
|
|
cmd_list = [
|
|
"delete",
|
|
"-B", backup_dir
|
|
]
|
|
|
|
cmd_list += ["--instance={0}".format(instance)]
|
|
if backup_id:
|
|
cmd_list += ["-i", backup_id]
|
|
|
|
return self.run_pb(cmd_list + options)
|
|
|
|
def delete_expired(self, backup_dir, instance, options=[]):
|
|
cmd_list = [
|
|
"delete", "--expired",
|
|
"-B", backup_dir,
|
|
"--instance={0}".format(instance)
|
|
]
|
|
return self.run_pb(cmd_list + options)
|
|
|
|
def show_config(self, backup_dir, instance):
|
|
out_dict = {}
|
|
cmd_list = [
|
|
"show-config",
|
|
"-B", backup_dir,
|
|
"--instance={0}".format(instance)
|
|
]
|
|
res = self.run_pb(cmd_list).splitlines()
|
|
for line in res:
|
|
if not line.startswith('#'):
|
|
name, var = line.partition(" = ")[::2]
|
|
out_dict[name] = var
|
|
return out_dict
|
|
|
|
|
|
def get_recovery_conf(self, node):
|
|
out_dict = {}
|
|
with open(os.path.join(node.data_dir, "recovery.conf"), "r") as recovery_conf:
|
|
for line in recovery_conf:
|
|
try:
|
|
key, value = line.split("=")
|
|
except:
|
|
continue
|
|
out_dict[key.strip()] = value.strip(" '").replace("'\n", "")
|
|
return out_dict
|
|
|
|
def set_archiving(self, backup_dir, instance, node, replica=False):
|
|
|
|
if replica:
|
|
archive_mode = 'always'
|
|
node.append_conf('postgresql.auto.conf', 'hot_standby = on')
|
|
else:
|
|
archive_mode = 'on'
|
|
|
|
node.append_conf(
|
|
"postgresql.auto.conf",
|
|
"wal_level = archive"
|
|
)
|
|
node.append_conf(
|
|
"postgresql.auto.conf",
|
|
"archive_mode = {0}".format(archive_mode)
|
|
)
|
|
if os.name == 'posix':
|
|
node.append_conf(
|
|
"postgresql.auto.conf",
|
|
"archive_command = '{0} archive-push -B {1} --instance={2} --wal-file-path %p --wal-file-name %f'".format(
|
|
self.probackup_path, backup_dir, instance))
|
|
#elif os.name == 'nt':
|
|
# node.append_conf(
|
|
# "postgresql.auto.conf",
|
|
# "archive_command = 'copy %p {0}\\%f'".format(archive_dir)
|
|
# )
|
|
|
|
def set_replica(self, master, replica, replica_name='replica', synchronous=False):
|
|
replica.append_conf('postgresql.auto.conf', 'port = {0}'.format(replica.port))
|
|
replica.append_conf('postgresql.auto.conf', 'hot_standby = on')
|
|
replica.append_conf('recovery.conf', "standby_mode = 'on'")
|
|
replica.append_conf('recovery.conf',
|
|
"primary_conninfo = 'user={0} port={1} application_name={2} sslmode=prefer sslcompression=1'".format(
|
|
self.user, master.port, replica_name))
|
|
if synchronous:
|
|
master.append_conf('postgresql.auto.conf', "synchronous_standby_names='{0}'".format(replica_name))
|
|
master.append_conf('postgresql.auto.conf', "synchronous_commit='remote_apply'")
|
|
master.reload()
|
|
|
|
def wrong_wal_clean(self, node, wal_size):
|
|
wals_dir = os.path.join(self.backup_dir(node), "wal")
|
|
wals = [f for f in os.listdir(wals_dir) if os.path.isfile(os.path.join(wals_dir, f))]
|
|
wals.sort()
|
|
file_path = os.path.join(wals_dir, wals[-1])
|
|
if os.path.getsize(file_path) != wal_size:
|
|
os.remove(file_path)
|
|
|
|
def guc_wal_segment_size(self, node):
|
|
var = node.execute("postgres", "select setting from pg_settings where name = 'wal_segment_size'")
|
|
return int(var[0][0]) * self.guc_wal_block_size(node)
|
|
|
|
def guc_wal_block_size(self, node):
|
|
var = node.execute("postgres", "select setting from pg_settings where name = 'wal_block_size'")
|
|
return int(var[0][0])
|
|
|
|
def get_pgpro_edition(self, node):
|
|
if node.execute("postgres", "select exists(select 1 from pg_proc where proname = 'pgpro_edition')")[0][0]:
|
|
var = node.execute("postgres", "select pgpro_edition()")
|
|
return str(var[0][0])
|
|
else:
|
|
return False
|
|
|
|
def get_username(self):
|
|
""" Returns current user name """
|
|
return pwd.getpwuid(os.getuid())[0]
|
|
|
|
def switch_wal_segment(self, node):
|
|
""" Execute pg_switch_wal/xlog() in given node"""
|
|
if version_to_num(node.safe_psql("postgres", "show server_version")) >= version_to_num('10.0'):
|
|
node.safe_psql("postgres", "select pg_switch_wal()")
|
|
else:
|
|
node.safe_psql("postgres", "select pg_switch_xlog()")
|
|
|
|
def del_test_dir(self, module_name, fname):
|
|
""" Del testdir and optimistically try to del module dir"""
|
|
try:
|
|
testgres.clean_all()
|
|
except:
|
|
pass
|
|
|
|
shutil.rmtree(os.path.join(self.tmp_path, module_name, fname),
|
|
ignore_errors=True)
|
|
try:
|
|
os.rmdir(os.path.join(self.tmp_path, module_name))
|
|
except:
|
|
pass
|
|
|
|
def pgdata_content(self, directory):
|
|
""" return dict with directory content. TAKE IT AFTER CHECKPOINT or BACKUP"""
|
|
dirs_to_ignore = ['pg_xlog', 'pg_wal', 'pg_log', 'pg_stat_tmp', 'pg_subtrans', 'pg_notify']
|
|
files_to_ignore = ['postmaster.pid', 'postmaster.opts', 'pg_internal.init', 'postgresql.auto.conf']
|
|
suffixes_to_ignore = ('_ptrack', 'ptrack_control', 'pg_control', 'ptrack_init')
|
|
directory_dict = {}
|
|
directory_dict['pgdata'] = directory
|
|
directory_dict['files'] = {}
|
|
for root, dirs, files in os.walk(directory, followlinks=True):
|
|
dirs[:] = [d for d in dirs if d not in dirs_to_ignore]
|
|
for file in files:
|
|
if file in files_to_ignore or file.endswith(suffixes_to_ignore):
|
|
continue
|
|
file = os.path.join(root,file)
|
|
file_relpath = os.path.relpath(file, directory)
|
|
directory_dict['files'][file_relpath] = hashlib.md5(open(file, 'rb').read()).hexdigest()
|
|
return directory_dict
|
|
|
|
def compare_pgdata(self, original_pgdata, restored_pgdata):
|
|
""" return dict with directory content. DO IT BEFORE RECOVERY"""
|
|
fail = False
|
|
error_message = ''
|
|
for file in original_pgdata['files']:
|
|
if file in restored_pgdata['files']:
|
|
if original_pgdata['files'][file] != restored_pgdata['files'][file]:
|
|
error_message += '\nChecksumm mismatch.\n File_old: {0}\n Checksumm_old: {1}\n File_new: {2}\n Checksumm_mew: {3}\n'.format(
|
|
os.path.join(original_pgdata['pgdata'], file),
|
|
original_pgdata['files'][file],
|
|
os.path.join(restored_pgdata['pgdata'], file),
|
|
restored_pgdata['files'][file])
|
|
fail = True
|
|
else:
|
|
error_message += '\nFile dissappearance. File: {0}/{1}'.format(restored_pgdata['pgdata'], file)
|
|
fail = True
|
|
self.assertFalse(fail, error_message)
|