mirror of
https://github.com/outbackdingo/patroni.git
synced 2026-08-25 14:53:37 +00:00
Polina BunginaandGitHub
8c5ab4c07d
Due to postgres --describe-config not showing GUCs defined as GUC_NO_SHOW_ALL | GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE, Patroni was always ignoring some GUCs that a user might want to have configured with non-default values. - remove postgres --describe-config validation. - define minor versions for availability bounds of some back-patched GUCs
109 lines
3.3 KiB
Python
109 lines
3.3 KiB
Python
import errno
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import logging
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import os
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from typing import Iterable, Tuple
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from ..exceptions import PostgresException
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logger = logging.getLogger(__name__)
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def postgres_version_to_int(pg_version: str) -> int:
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"""Convert the server_version to integer
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>>> postgres_version_to_int('9.5.3')
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90503
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>>> postgres_version_to_int('9.3.13')
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90313
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>>> postgres_version_to_int('10.1')
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100001
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>>> postgres_version_to_int('10') # doctest: +IGNORE_EXCEPTION_DETAIL
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Traceback (most recent call last):
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...
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PostgresException: 'Invalid PostgreSQL version format: X.Y or X.Y.Z is accepted: 10'
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>>> postgres_version_to_int('9.6') # doctest: +IGNORE_EXCEPTION_DETAIL
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Traceback (most recent call last):
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...
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PostgresException: 'Invalid PostgreSQL version format: X.Y or X.Y.Z is accepted: 9.6'
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>>> postgres_version_to_int('a.b.c') # doctest: +IGNORE_EXCEPTION_DETAIL
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Traceback (most recent call last):
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...
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PostgresException: 'Invalid PostgreSQL version: a.b.c'
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"""
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try:
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components = list(map(int, pg_version.split('.')))
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except ValueError:
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raise PostgresException('Invalid PostgreSQL version: {0}'.format(pg_version))
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if len(components) < 2 or len(components) == 2 and components[0] < 10 or len(components) > 3:
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raise PostgresException('Invalid PostgreSQL version format: X.Y or X.Y.Z is accepted: {0}'.format(pg_version))
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if len(components) == 2:
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# new style version numbers, i.e. 10.1 becomes 100001
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components.insert(1, 0)
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return int(''.join('{0:02d}'.format(c) for c in components))
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def postgres_major_version_to_int(pg_version: str) -> int:
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"""
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>>> postgres_major_version_to_int('10')
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100000
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>>> postgres_major_version_to_int('9.6')
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90600
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"""
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return postgres_version_to_int(pg_version + '.0')
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def get_major_from_minor_version(version: int) -> int:
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"""Extract major PostgreSQL version from the provided full version.
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:param version: integer representation of PostgreSQL full version (major + minor).
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:returns: integer representation of the PostgreSQL major version.
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:Example:
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>>> get_major_from_minor_version(100012)
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100000
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>>> get_major_from_minor_version(90313)
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90300
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"""
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return version // 100 * 100
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def parse_lsn(lsn: str) -> int:
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t = lsn.split('/')
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return int(t[0], 16) * 0x100000000 + int(t[1], 16)
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def parse_history(data: str) -> Iterable[Tuple[int, int, str]]:
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for line in data.split('\n'):
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values = line.strip().split('\t')
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if len(values) == 3:
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try:
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yield int(values[0]), parse_lsn(values[1]), values[2]
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except (IndexError, ValueError):
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logger.exception('Exception when parsing timeline history line "%s"', values)
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def format_lsn(lsn: int, full: bool = False) -> str:
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template = '{0:X}/{1:08X}' if full else '{0:X}/{1:X}'
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return template.format(lsn >> 32, lsn & 0xFFFFFFFF)
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def fsync_dir(path: str) -> None:
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if os.name != 'nt':
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fd = os.open(path, os.O_DIRECTORY)
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try:
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os.fsync(fd)
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except OSError as e:
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# Some filesystems don't like fsyncing directories and raise EINVAL. Ignoring it is usually safe.
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if e.errno != errno.EINVAL:
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raise
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finally:
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os.close(fd)
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