db/pg_probackup
db/pg_probackup
1
0
Fork 0
mirror of https://github.com/postgrespro/pg_probackup.git synced 2024-12-11 11:41:33 +02:00
Code Issues Releases Activity
9ec6357a0a
pg_probackup/tests/helpers/ptrack_helpers.py
Grigory Smolkin dff482a2da tests: ptrack tests major revamp
2018-10-16 22:53:59 +03:00

1364 lines
46 KiB
Python
Raw Blame History

# you need os for unittest to work
import os
from sys import exit, argv, version_info
import subprocess
import shutil
import six
import testgres
import hashlib
import re
import pwd
import select
import psycopg2
from time import sleep
import re
import json
idx_ptrack = {
't_heap': {
'type': 'heap'
},
't_btree': {
'type': 'btree',
'column': 'text',
'relation': 't_heap'
},
't_seq': {
'type': 'seq',
'column': 't_seq',
'relation': 't_heap'
},
't_spgist': {
'type': 'spgist',
'column': 'text',
'relation': 't_heap'
},
't_brin': {
'type': 'brin',
'column': 'text',
'relation': 't_heap'
},
't_gist': {
'type': 'gist',
'column': 'tsvector',
'relation': 't_heap'
},
't_gin': {
'type': 'gin',
'column': 'tsvector',
'relation': 't_heap'
},
}
archive_script = """
#!/bin/bash
count=$(ls {backup_dir}/test00* | wc -l)
if [ $count -ge {count_limit} ]
then
exit 1
else
cp $1 {backup_dir}/wal/{node_name}/$2
count=$((count+1))
touch {backup_dir}/test00$count
exit 0
fi
"""
warning = """
Wrong splint in show_pb
Original Header:
{header}
Original Body:
{body}
Splitted Header
{header_split}
Splitted Body
{body_split}
"""
def dir_files(base_dir):
out_list = []
for dir_name, subdir_list, file_list in os.walk(base_dir):
if dir_name != base_dir:
out_list.append(os.path.relpath(dir_name, base_dir))
for fname in file_list:
out_list.append(
os.path.relpath(os.path.join(
dir_name, fname), base_dir)
)
out_list.sort()
return out_list
def is_enterprise():
# pg_config --help
p = subprocess.Popen(
[os.environ['PG_CONFIG'], '--help'],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE
)
if b'postgrespro.ru' in p.communicate()[0]:
return True
else:
return False
class ProbackupException(Exception):
def __init__(self, message, cmd):
self.message = message
self.cmd = cmd
def __str__(self):
return '\n ERROR: {0}\n CMD: {1}'.format(repr(self.message), self.cmd)
def slow_start(self, replica=False):
# wait for https://github.com/postgrespro/testgres/pull/50
# self.poll_query_until(
# "postgres",
# "SELECT not pg_is_in_recovery()",
# raise_operational_error=False)
self.start()
if not replica:
while True:
try:
self.poll_query_until(
"postgres",
"SELECT not pg_is_in_recovery()")
break
except Exception as e:
continue
else:
self.poll_query_until(
"postgres",
"SELECT pg_is_in_recovery()")
# while True:
# try:
# self.poll_query_until(
# "postgres",
# "SELECT pg_is_in_recovery()")
# break
# except ProbackupException as e:
# continue
class ProbackupTest(object):
# Class attributes
enterprise = is_enterprise()
def __init__(self, *args, **kwargs):
super(ProbackupTest, self).__init__(*args, **kwargs)
if '-v' in argv or '--verbose' in argv:
self.verbose = True
else:
self.verbose = False
self.test_env = os.environ.copy()
envs_list = [
"LANGUAGE",
"LC_ALL",
"PGCONNECT_TIMEOUT",
"PGDATA",
"PGDATABASE",
"PGHOSTADDR",
"PGREQUIRESSL",
"PGSERVICE",
"PGSSLMODE",
"PGUSER",
"PGPORT",
"PGHOST"
]
for e in envs_list:
try:
del self.test_env[e]
except:
pass
self.test_env["LC_MESSAGES"] = "C"
self.test_env["LC_TIME"] = "C"
self.paranoia = False
if 'PG_PROBACKUP_PARANOIA' in self.test_env:
if self.test_env['PG_PROBACKUP_PARANOIA'] == 'ON':
self.paranoia = True
self.archive_compress = False
if 'ARCHIVE_COMPRESSION' in self.test_env:
if self.test_env['ARCHIVE_COMPRESSION'] == 'ON':
self.archive_compress = True
try:
testgres.configure_testgres(
cache_initdb=False,
cached_initdb_dir=False,
cache_pg_config=False,
node_cleanup_full=False)
except:
pass
self.helpers_path = os.path.dirname(os.path.realpath(__file__))
self.dir_path = os.path.abspath(
os.path.join(self.helpers_path, os.pardir)
)
self.tmp_path = os.path.abspath(
os.path.join(self.dir_path, 'tmp_dirs')
)
try:
os.makedirs(os.path.join(self.dir_path, 'tmp_dirs'))
except:
pass
self.user = self.get_username()
self.probackup_path = None
if "PGPROBACKUPBIN" in self.test_env:
if (
os.path.isfile(self.test_env["PGPROBACKUPBIN"]) and
os.access(self.test_env["PGPROBACKUPBIN"], os.X_OK)
):
self.probackup_path = self.test_env["PGPROBACKUPBIN"]
else:
if self.verbose:
print('PGPROBACKUPBIN is not an executable file')
if not self.probackup_path:
probackup_path_tmp = os.path.join(
testgres.get_pg_config()["BINDIR"], 'pg_probackup')
if os.path.isfile(probackup_path_tmp):
if not os.access(probackup_path_tmp, os.X_OK):
print('{0} is not an executable file'.format(
probackup_path_tmp))
else:
self.probackup_path = probackup_path_tmp
if not self.probackup_path:
probackup_path_tmp = os.path.abspath(os.path.join(
self.dir_path, "../pg_probackup"))
if os.path.isfile(probackup_path_tmp):
if not os.access(probackup_path_tmp, os.X_OK):
print('{0} is not an executable file'.format(
probackup_path_tmp))
else:
self.probackup_path = probackup_path_tmp
if not self.probackup_path:
print('pg_probackup binary is not found')
exit(1)
os.environ['PATH'] = os.path.dirname(
self.probackup_path) + ":" + os.environ['PATH']
self.probackup_old_path = None
if "PGPROBACKUPBIN_OLD" in self.test_env:
if (
os.path.isfile(self.test_env["PGPROBACKUPBIN_OLD"]) and
os.access(self.test_env["PGPROBACKUPBIN_OLD"], os.X_OK)
):
self.probackup_old_path = self.test_env["PGPROBACKUPBIN_OLD"]
else:
if self.verbose:
print('PGPROBACKUPBIN_OLD is not an executable file')
def make_simple_node(
self,
base_dir=None,
set_replication=False,
initdb_params=[],
pg_options={}):
real_base_dir = os.path.join(self.tmp_path, base_dir)
shutil.rmtree(real_base_dir, ignore_errors=True)
os.makedirs(real_base_dir)
node = testgres.get_new_node('test', base_dir=real_base_dir)
# bound method slow_start() to 'node' class instance
node.slow_start = slow_start.__get__(node)
node.should_rm_dirs = True
node.init(
initdb_params=initdb_params, allow_streaming=set_replication)
# Sane default parameters
node.append_conf("postgresql.auto.conf", "max_connections = 100")
node.append_conf("postgresql.auto.conf", "shared_buffers = 10MB")
node.append_conf("postgresql.auto.conf", "fsync = on")
node.append_conf("postgresql.auto.conf", "wal_level = logical")
node.append_conf("postgresql.auto.conf", "hot_standby = 'off'")
node.append_conf(
"postgresql.auto.conf", "log_line_prefix = '%t [%p]: [%l-1] '")
node.append_conf("postgresql.auto.conf", "log_statement = none")
node.append_conf("postgresql.auto.conf", "log_duration = on")
node.append_conf(
"postgresql.auto.conf", "log_min_duration_statement = 0")
node.append_conf("postgresql.auto.conf", "log_connections = on")
node.append_conf("postgresql.auto.conf", "log_disconnections = on")
# Apply given parameters
for key, value in six.iteritems(pg_options):
node.append_conf("postgresql.auto.conf", "%s = %s" % (key, value))
# Allow replication in pg_hba.conf
if set_replication:
node.append_conf(
"pg_hba.conf",
"local replication all trust\n")
node.append_conf(
"postgresql.auto.conf",
"max_wal_senders = 10")
return node
def create_tblspace_in_node(self, node, tblspc_name, tblspc_path=None, cfs=False):
res = node.execute(
"postgres",
"select exists"
" (select 1 from pg_tablespace where spcname = '{0}')".format(
tblspc_name)
)
# Check that tablespace with name 'tblspc_name' do not exists already
self.assertFalse(
res[0][0],
'Tablespace "{0}" already exists'.format(tblspc_name)
)
if not tblspc_path:
tblspc_path = os.path.join(
node.base_dir, '{0}'.format(tblspc_name))
cmd = "CREATE TABLESPACE {0} LOCATION '{1}'".format(
tblspc_name, tblspc_path)
if cfs:
cmd += " with (compression=true)"
if not os.path.exists(tblspc_path):
os.makedirs(tblspc_path)
res = node.safe_psql("postgres", cmd)
# Check that tablespace was successfully created
# self.assertEqual(
# res[0], 0,
# 'Failed to create tablespace with cmd: {0}'.format(cmd))
def get_tblspace_path(self, node, tblspc_name):
return os.path.join(node.base_dir, tblspc_name)
def get_fork_size(self, node, fork_name):
return node.execute(
"postgres",
"select pg_relation_size('{0}')/8192".format(fork_name))[0][0]
def get_fork_path(self, node, fork_name):
return os.path.join(
node.base_dir, 'data', node.execute(
"postgres",
"select pg_relation_filepath('{0}')".format(
fork_name))[0][0]
)
def get_md5_per_page_for_fork(self, file, size_in_pages):
pages_per_segment = {}
md5_per_page = {}
nsegments = size_in_pages/131072
if size_in_pages % 131072 != 0:
nsegments = nsegments + 1
size = size_in_pages
for segment_number in range(nsegments):
if size - 131072 > 0:
pages_per_segment[segment_number] = 131072
else:
pages_per_segment[segment_number] = size
size = size - 131072
for segment_number in range(nsegments):
offset = 0
if segment_number == 0:
file_desc = os.open(file, os.O_RDONLY)
start_page = 0
end_page = pages_per_segment[segment_number]
else:
file_desc = os.open(
file+".{0}".format(segment_number), os.O_RDONLY
)
start_page = max(md5_per_page)+1
end_page = end_page + pages_per_segment[segment_number]
for page in range(start_page, end_page):
md5_per_page[page] = hashlib.md5(
os.read(file_desc, 8192)).hexdigest()
offset += 8192
os.lseek(file_desc, offset, 0)
os.close(file_desc)
return md5_per_page
def get_ptrack_bits_per_page_for_fork(self, node, file, size=[]):
if self.get_pgpro_edition(node) == 'enterprise':
header_size = 48
else:
header_size = 24
ptrack_bits_for_fork = []
page_body_size = 8192-header_size
byte_size = os.path.getsize(file + '_ptrack')
npages = byte_size/8192
if byte_size % 8192 != 0:
print('Ptrack page is not 8k aligned')
sys.exit(1)
file = os.open(file + '_ptrack', os.O_RDONLY)
for page in range(npages):
offset = 8192*page+header_size
os.lseek(file, offset, 0)
lots_of_bytes = os.read(file, page_body_size)
byte_list = [
lots_of_bytes[i:i+1] for i in range(len(lots_of_bytes))
]
for byte in byte_list:
# byte_inverted = bin(int(byte, base=16))[2:][::-1]
# bits = (byte >> x) & 1 for x in range(7, -1, -1)
byte_inverted = bin(ord(byte))[2:].rjust(8, '0')[::-1]
for bit in byte_inverted:
# if len(ptrack_bits_for_fork) < size:
ptrack_bits_for_fork.append(int(bit))
os.close(file)
return ptrack_bits_for_fork
def check_ptrack_sanity(self, idx_dict):
success = True
if idx_dict['new_size'] > idx_dict['old_size']:
size = idx_dict['new_size']
else:
size = idx_dict['old_size']
for PageNum in range(size):
if PageNum not in idx_dict['old_pages']:
# Page was not present before, meaning that relation got bigger
# Ptrack should be equal to 1
if idx_dict['ptrack'][PageNum] != 1:
if self.verbose:
print(
'File: {0}\n Page Number {1} of type {2} was added,'
' but ptrack value is {3}. THIS IS BAD'.format(
idx_dict['path'],
PageNum, idx_dict['type'],
idx_dict['ptrack'][PageNum])
)
# print(idx_dict)
success = False
continue
if PageNum not in idx_dict['new_pages']:
# Page is not present now, meaning that relation got smaller
# Ptrack should be equal to 1,
# We are not freaking out about false positive stuff
if idx_dict['ptrack'][PageNum] != 1:
if self.verbose:
print(
'File: {0}\n Page Number {1} of type {2} was deleted,'
' but ptrack value is {3}. THIS IS BAD'.format(
idx_dict['path'],
PageNum, idx_dict['type'],
idx_dict['ptrack'][PageNum])
)
continue
# Ok, all pages in new_pages that do not have
# corresponding page in old_pages are been dealt with.
# We can now safely proceed to comparing old and new pages
if idx_dict['new_pages'][
PageNum] != idx_dict['old_pages'][PageNum]:
# Page has been changed,
# meaning that ptrack should be equal to 1
if idx_dict['ptrack'][PageNum] != 1:
if self.verbose:
print(
'File: {0}\n Page Number {1} of type {2} was changed,'
' but ptrack value is {3}. THIS IS BAD'.format(
idx_dict['path'],
PageNum, idx_dict['type'],
idx_dict['ptrack'][PageNum])
)
print(
" Old checksumm: {0}\n"
" New checksumm: {1}".format(
idx_dict['old_pages'][PageNum],
idx_dict['new_pages'][PageNum])
)
if PageNum == 0 and idx_dict['type'] == 'spgist':
if self.verbose:
print(
'SPGIST is a special snowflake, so don`t '
'fret about losing ptrack for blknum 0'
)
continue
success = False
else:
# Page has not been changed,
# meaning that ptrack should be equal to 0
if idx_dict['ptrack'][PageNum] != 0:
if self.verbose:
print(
'File: {0}\n Page Number {1} of type {2} was not changed,'
' but ptrack value is {3}'.format(
idx_dict['path'],
PageNum, idx_dict['type'],
idx_dict['ptrack'][PageNum]
)
)
return success
# self.assertTrue(
# success, 'Ptrack has failed to register changes in data files'
# )
def check_ptrack_recovery(self, idx_dict):
size = idx_dict['size']
for PageNum in range(size):
if idx_dict['ptrack'][PageNum] != 1:
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(
PageNum, idx_dict['type'],
idx_dict['ptrack'][PageNum],
idx_dict
)
)
def check_ptrack_clean(self, idx_dict, size):
for PageNum in range(size):
if idx_dict['ptrack'][PageNum] != 0:
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(
PageNum,
idx_dict['type'],
idx_dict['ptrack'][PageNum],
idx_dict
)
)
def run_pb(self, command, async=False, gdb=False, old_binary=False):
if not self.probackup_old_path and old_binary:
print("PGPROBACKUPBIN_OLD is not set")
exit(1)
if old_binary:
binary_path = self.probackup_old_path
else:
binary_path = self.probackup_path
try:
self.cmd = [' '.join(map(str, [binary_path] + command))]
if self.verbose:
print(self.cmd)
if gdb:
return GDBobj([binary_path] + command, self.verbose)
if async:
return subprocess.Popen(
self.cmd,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
env=self.test_env
)
else:
self.output = subprocess.check_output(
[binary_path] + command,
stderr=subprocess.STDOUT,
env=self.test_env
).decode("utf-8")
if command[0] == 'backup':
# return backup ID
for line in self.output.splitlines():
if 'INFO: Backup' and 'completed' in line:
return line.split()[2]
else:
return self.output
except subprocess.CalledProcessError as e:
raise ProbackupException(e.output.decode("utf-8"), self.cmd)
def run_binary(self, command, async=False):
if self.verbose:
print([' '.join(map(str, command))])
try:
if async:
return subprocess.Popen(
command,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
env=self.test_env
)
else:
self.output = subprocess.check_output(
command,
stderr=subprocess.STDOUT,
env=self.test_env
).decode("utf-8")
return self.output
except subprocess.CalledProcessError as e:
raise ProbackupException(e.output.decode("utf-8"), command)
def init_pb(self, backup_dir, old_binary=False):
shutil.rmtree(backup_dir, ignore_errors=True)
return self.run_pb([
"init",
"-B", backup_dir
],
old_binary=old_binary
)
def add_instance(self, backup_dir, instance, node, old_binary=False):
return self.run_pb([
"add-instance",
"--instance={0}".format(instance),
"-B", backup_dir,
"-D", node.data_dir
],
old_binary=old_binary
)
def del_instance(self, backup_dir, instance, old_binary=False):
return self.run_pb([
"del-instance",
"--instance={0}".format(instance),
"-B", backup_dir
],
old_binary=old_binary
)
def clean_pb(self, backup_dir):
shutil.rmtree(backup_dir, ignore_errors=True)
def backup_node(
self, backup_dir, instance, node, data_dir=False,
backup_type="full", options=[], async=False, gdb=False,
old_binary=False
):
if not node and not data_dir:
print('You must provide ether node or data_dir for backup')
exit(1)
if node:
pgdata = node.data_dir
if data_dir:
pgdata = data_dir
cmd_list = [
"backup",
"-B", backup_dir,
# "-D", pgdata,
"-p", "%i" % node.port,
"-d", "postgres",
"--instance={0}".format(instance)
]
if backup_type:
cmd_list += ["-b", backup_type]
return self.run_pb(cmd_list + options, async, gdb, old_binary)
def merge_backup(
self, backup_dir, instance, backup_id, async=False,
gdb=False, old_binary=False, options=[]):
cmd_list = [
"merge",
"-B", backup_dir,
"--instance={0}".format(instance),
"-i", backup_id
]
return self.run_pb(cmd_list + options, async, gdb, old_binary)
def restore_node(
self, backup_dir, instance, node=False,
data_dir=None, backup_id=None, old_binary=False, options=[]
):
if data_dir is None:
data_dir = node.data_dir
cmd_list = [
"restore",
"-B", backup_dir,
"-D", data_dir,
"--instance={0}".format(instance)
]
if backup_id:
cmd_list += ["-i", backup_id]
return self.run_pb(cmd_list + options, old_binary=old_binary)
def show_pb(
self, backup_dir, instance=None, backup_id=None,
options=[], as_text=False, as_json=True, old_binary=False
):
backup_list = []
specific_record = {}
cmd_list = [
"show",
"-B", backup_dir,
]
if instance:
cmd_list += ["--instance={0}".format(instance)]
if backup_id:
cmd_list += ["-i", backup_id]
if as_json:
cmd_list += ["--format=json"]
if as_text:
# You should print it when calling as_text=true
return self.run_pb(cmd_list + options, old_binary=old_binary)
# get show result as list of lines
if as_json:
data = json.loads(self.run_pb(cmd_list + options, old_binary=old_binary))
# print(data)
for instance_data in data:
# find specific instance if requested
if instance and instance_data['instance'] != instance:
continue
for backup in reversed(instance_data['backups']):
# find specific backup if requested
if backup_id:
if backup['id'] == backup_id:
return backup
else:
backup_list.append(backup)
return backup_list
else:
show_splitted = self.run_pb(
cmd_list + options, old_binary=old_binary).splitlines()
if instance is not None and backup_id is None:
# cut header(ID, Mode, etc) from show as single string
header = show_splitted[1:2][0]
# cut backup records from show as single list
# with string for every backup record
body = show_splitted[3:]
# inverse list so oldest record come first
body = body[::-1]
# split string in list with string for every header element
header_split = re.split(" +", header)
# Remove empty items
for i in header_split:
if i == '':
header_split.remove(i)
continue
header_split = [
header_element.rstrip() for header_element in header_split
]
for backup_record in body:
backup_record = backup_record.rstrip()
# split list with str for every backup record element
backup_record_split = re.split(" +", backup_record)
# Remove empty items
for i in backup_record_split:
if i == '':
backup_record_split.remove(i)
if len(header_split) != len(backup_record_split):
print(warning.format(
header=header, body=body,
header_split=header_split,
body_split=backup_record_split)
)
exit(1)
new_dict = dict(zip(header_split, backup_record_split))
backup_list.append(new_dict)
return backup_list
else:
# cut out empty lines and lines started with #
# and other garbage then reconstruct it as dictionary
# print show_splitted
sanitized_show = [item for item in show_splitted if item]
sanitized_show = [
item for item in sanitized_show if not item.startswith('#')
]
# print sanitized_show
for line in sanitized_show:
name, var = line.partition(" = ")[::2]
var = var.strip('"')
var = var.strip("'")
specific_record[name.strip()] = var
return specific_record
def validate_pb(
self, backup_dir, instance=None,
backup_id=None, options=[], old_binary=False
):
cmd_list = [
"validate",
"-B", backup_dir
]
if instance:
cmd_list += ["--instance={0}".format(instance)]
if backup_id:
cmd_list += ["-i", backup_id]
return self.run_pb(cmd_list + options, old_binary=old_binary)
def delete_pb(
self, backup_dir, instance,
backup_id=None, options=[], old_binary=False):
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, old_binary=old_binary)
def delete_expired(
self, backup_dir, instance, options=[], old_binary=False):
cmd_list = [
"delete", "--expired", "--wal",
"-B", backup_dir,
"--instance={0}".format(instance)
]
return self.run_pb(cmd_list + options, old_binary=old_binary)
def show_config(self, backup_dir, instance, old_binary=False):
out_dict = {}
cmd_list = [
"show-config",
"-B", backup_dir,
"--instance={0}".format(instance)
]
res = self.run_pb(cmd_list, old_binary=old_binary).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, overwrite=False,
old_binary=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)
)
archive_command = "{0} archive-push -B {1} --instance={2} ".format(
self.probackup_path, backup_dir, instance)
if os.name == 'posix':
if self.archive_compress:
archive_command = archive_command + "--compress "
if overwrite:
archive_command = archive_command + "--overwrite "
archive_command = archive_command + "--wal-file-path %p --wal-file-name %f"
node.append_conf(
"postgresql.auto.conf",
"archive_command = '{0}'".format(
archive_command))
# 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 version_to_num(self, version):
if not version:
return 0
parts = version.split(".")
while len(parts) < 3:
parts.append("0")
num = 0
for part in parts:
num = num * 100 + int(re.sub("[^\d]", "", part))
return num
def switch_wal_segment(self, node):
"""
Execute pg_switch_wal/xlog() in given node
Args:
node: an instance of PostgresNode or NodeConnection class
"""
if isinstance(node, testgres.PostgresNode):
if self.version_to_num(
node.safe_psql("postgres", "show server_version")
) >= self.version_to_num('10.0'):
node.safe_psql("postgres", "select pg_switch_wal()")
else:
node.safe_psql("postgres", "select pg_switch_xlog()")
else:
if self.version_to_num(
node.execute("show server_version")[0][0]
) >= self.version_to_num('10.0'):
node.execute("select pg_switch_wal()")
else:
node.execute("select pg_switch_xlog()")
def get_version(self, node):
return self.version_to_num(
testgres.get_pg_config()["VERSION"].split(" ")[1])
def get_bin_path(self, binary):
return testgres.get_bin_path(binary)
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, ignore_ptrack=True):
""" 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',
'backup_label', 'tablespace_map', 'recovery.conf',
'ptrack_control', 'ptrack_init', 'pg_control'
]
# suffixes_to_ignore = (
# '_ptrack'
# )
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
(ignore_ptrack and file.endswith('_ptrack'))
):
continue
file_fullpath = os.path.join(root, file)
file_relpath = os.path.relpath(file_fullpath, directory)
directory_dict['files'][file_relpath] = {'is_datafile': False}
directory_dict['files'][file_relpath]['md5'] = hashlib.md5(
open(file_fullpath, 'rb').read()).hexdigest()
if file.isdigit():
directory_dict['files'][file_relpath]['is_datafile'] = True
size_in_pages = os.path.getsize(file_fullpath)/8192
directory_dict['files'][file_relpath][
'md5_per_page'] = self.get_md5_per_page_for_fork(
file_fullpath, size_in_pages
)
return directory_dict
def compare_pgdata(self, original_pgdata, restored_pgdata):
""" return dict with directory content. DO IT BEFORE RECOVERY"""
fail = False
error_message = 'Restored PGDATA is not equal to original!\n'
for file in restored_pgdata['files']:
# File is present in RESTORED PGDATA
# but not present in ORIGINAL
# only backup_label is allowed
if file not in original_pgdata['files']:
fail = True
error_message += '\nFile is not present'
error_message += ' in original PGDATA: {0}\n'.format(
os.path.join(restored_pgdata['pgdata'], file))
for file in original_pgdata['files']:
if file in restored_pgdata['files']:
if (
original_pgdata['files'][file]['md5'] !=
restored_pgdata['files'][file]['md5']
):
fail = True
error_message += (
'\nFile Checksumm mismatch.\n'
'File_old: {0}\nChecksumm_old: {1}\n'
'File_new: {2}\nChecksumm_new: {3}\n').format(
os.path.join(original_pgdata['pgdata'], file),
original_pgdata['files'][file]['md5'],
os.path.join(restored_pgdata['pgdata'], file),
restored_pgdata['files'][file]['md5']
)
if original_pgdata['files'][file]['is_datafile']:
for page in original_pgdata['files'][file]['md5_per_page']:
if page not in restored_pgdata['files'][file]['md5_per_page']:
error_message += (
'\n Page {0} dissappeared.\n '
'File: {1}\n').format(
page,
os.path.join(
restored_pgdata['pgdata'],
file
)
)
continue
if original_pgdata['files'][file][
'md5_per_page'][page] != restored_pgdata[
'files'][file]['md5_per_page'][page]:
error_message += (
'\n Page checksumm mismatch: {0}\n '
' PAGE Checksumm_old: {1}\n '
' PAGE Checksumm_new: {2}\n '
' File: {3}\n'
).format(
page,
original_pgdata['files'][file][
'md5_per_page'][page],
restored_pgdata['files'][file][
'md5_per_page'][page],
os.path.join(
restored_pgdata['pgdata'], file)
)
for page in restored_pgdata['files'][file]['md5_per_page']:
if page not in original_pgdata['files'][file]['md5_per_page']:
error_message += '\n Extra page {0}\n File: {1}\n'.format(
page,
os.path.join(
restored_pgdata['pgdata'], file))
else:
error_message += (
'\nFile dissappearance.\n '
'File: {0}\n').format(
os.path.join(restored_pgdata['pgdata'], file)
)
fail = True
self.assertFalse(fail, error_message)
def get_async_connect(self, database=None, host=None, port=5432):
if not database:
database = 'postgres'
if not host:
host = '127.0.0.1'
return psycopg2.connect(
database="postgres",
host='127.0.0.1',
port=port,
async=True
)
def wait(self, connection):
while True:
state = connection.poll()
if state == psycopg2.extensions.POLL_OK:
break
elif state == psycopg2.extensions.POLL_WRITE:
select.select([], [connection.fileno()], [])
elif state == psycopg2.extensions.POLL_READ:
select.select([connection.fileno()], [], [])
else:
raise psycopg2.OperationalError("poll() returned %s" % state)
def gdb_attach(self, pid):
return GDBobj([str(pid)], self.verbose, attach=True)
class GdbException(Exception):
def __init__(self, message=False):
self.message = message
def __str__(self):
return '\n ERROR: {0}\n'.format(repr(self.message))
class GDBobj(ProbackupTest):
def __init__(self, cmd, verbose, attach=False):
self.verbose = verbose
# Check gdb presense
try:
gdb_version, _ = subprocess.Popen(
["gdb", "--version"],
stdout=subprocess.PIPE
).communicate()
except OSError:
raise GdbException("Couldn't find gdb on the path")
self.base_cmd = [
'gdb',
'--interpreter',
'mi2',
]
if attach:
self.cmd = self.base_cmd + ['--pid'] + cmd
else:
self.cmd = self.base_cmd + ['--args'] + cmd
# Get version
gdb_version_number = re.search(
b"^GNU gdb [^\d]*(\d+)\.(\d)",
gdb_version)
self.major_version = int(gdb_version_number.group(1))
self.minor_version = int(gdb_version_number.group(2))
if self.verbose:
print([' '.join(map(str, self.cmd))])
self.proc = subprocess.Popen(
self.cmd,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
bufsize=0,
universal_newlines=True
)
self.gdb_pid = self.proc.pid
# discard data from pipe,
# is there a way to do it a less derpy way?
while True:
line = self.proc.stdout.readline()
if 'No such process' in line:
raise GdbException(line)
if not line.startswith('(gdb)'):
pass
else:
break
def set_breakpoint(self, location):
result = self._execute('break ' + location)
for line in result:
if line.startswith('~"Breakpoint'):
return
elif line.startswith('^error') or line.startswith('(gdb)'):
break
elif line.startswith('&"break'):
pass
elif line.startswith('&"Function'):
raise GdbException(line)
elif line.startswith('&"No line'):
raise GdbException(line)
elif line.startswith('~"Make breakpoint pending on future shared'):
raise GdbException(line)
raise GdbException(
'Failed to set breakpoint.\n Output:\n {0}'.format(result)
)
def run_until_break(self):
result = self._execute('run', False)
for line in result:
if line.startswith('*stopped,reason="breakpoint-hit"'):
return
raise GdbException(
'Failed to run until breakpoint.\n'
)
def continue_execution_until_running(self):
result = self._execute('continue')
running = False
for line in result:
if line.startswith('*running'):
running = True
break
if line.startswith('*stopped,reason="breakpoint-hit"'):
running = False
continue
if line.startswith('*stopped,reason="exited-normally"'):
running = False
continue
return running
def continue_execution_until_exit(self):
result = self._execute('continue', False)
for line in result:
if line.startswith('*running'):
continue
if line.startswith('*stopped,reason="breakpoint-hit"'):
continue
if (
line.startswith('*stopped,reason="exited-normally"') or
line == '*stopped\n'
):
return
raise GdbException(
'Failed to continue execution until exit.\n'
)
def continue_execution_until_break(self, ignore_count=0):
if ignore_count > 0:
result = self._execute(
'continue ' + str(ignore_count),
False
)
else:
result = self._execute('continue', False)
running = False
for line in result:
if line.startswith('*running'):
running = True
if line.startswith('*stopped,reason="breakpoint-hit"'):
return 'breakpoint-hit'
if line.startswith('*stopped,reason="exited-normally"'):
return 'exited-normally'
if running:
return 'running'
def stopped_in_breakpoint(self):
output = []
while True:
line = self.proc.stdout.readline()
output += [line]
if self.verbose:
print(line)
if line.startswith('*stopped,reason="breakpoint-hit"'):
return True
return False
# use for breakpoint, run, continue
def _execute(self, cmd, running=True):
output = []
self.proc.stdin.flush()
self.proc.stdin.write(cmd + '\n')
self.proc.stdin.flush()
while True:
line = self.proc.stdout.readline()
output += [line]
if self.verbose:
print(repr(line))
if line == '^done\n' or line.startswith('*stopped'):
break
if running and line.startswith('*running'):
break
return output
Reference in New Issue View Git Blame Copy Permalink