Add option to skip raw SQL file when dumping postgres DB

trying to cut down on disk space, we'll see how well this works..
This commit is contained in:
Lance Edgar 2023-09-16 16:56:29 -05:00
parent 8e9a685006
commit 24d632b7e3

View file

@ -28,6 +28,7 @@ import os
import re
from rattail_fabric2 import apt, append, contains, sed, uncomment
from rattail.util import shlex_join
def install(c):
@ -199,7 +200,8 @@ def drop_db(c, name, checkfirst=True):
c.sudo('dropdb {}'.format(name), user='postgres')
def dump_db(c, name, port=None, exclude_tables=None):
def dump_db(c, name, port=None, exclude_tables=None,
skip_raw_file=False):
"""
Dump a database to file, on the server represented by ``c`` param.
@ -209,22 +211,40 @@ def dump_db(c, name, port=None, exclude_tables=None):
"""
c.run('touch {}.sql'.format(name))
c.run('chmod 0666 {}.sql'.format(name))
cmd = 'pg_dump {port} {exclude_tables} --file={name}.sql {name}'.format(
name=name,
port='--port={}'.format(port) if port else '',
exclude_tables='--exclude-table-data={}'.format(exclude_tables) if exclude_tables else '')
c.sudo(cmd, user='postgres')
c.run('gzip --force {}.sql'.format(name))
return '{}.sql.gz'.format(name)
sql_name = f'{name}.sql'
gz_name = f'{sql_name}.gz'
filename = gz_name if skip_raw_file else sql_name
port = f'--port={port}' if port else ''
exclude_tables = f'--exclude-table-data={exclude_tables}' if exclude_tables else ''
filename = '' if skip_raw_file else f'--file={filename}'
cmd = f'pg_dump {port} {exclude_tables} {filename} {name}'
if skip_raw_file:
tmp_name = f'/tmp/{gz_name}'
cmd = f'{cmd} | gzip -c > {tmp_name}'
cmd = shlex_join(['bash', '-c', cmd])
c.sudo(cmd, user='postgres')
# TODO: should remove this file
c.run(f"cp {tmp_name} {gz_name}")
else:
c.sudo(cmd, user='postgres')
c.run(f'gzip --force {sql_name}')
return gz_name
def download_db(c, name, destination=None, port=None, exclude_tables=None):
def download_db(c, name, destination=None, port=None, exclude_tables=None,
skip_raw_file=False):
"""
Download a database from the server represented by ``c`` param.
"""
if destination is None:
destination = './{}.sql.gz'.format(name)
dumpfile = dump_db(c, name, port=port, exclude_tables=exclude_tables)
dumpfile = dump_db(c, name, port=port, exclude_tables=exclude_tables,
skip_raw_file=skip_raw_file)
c.get(dumpfile, destination)
c.run('rm {}'.format(dumpfile))