mirror of
https://github.com/neondatabase/neon.git
synced 2025-12-27 16:12:56 +00:00
3c2b03cd87
In addition, fix database size calculation: count not only main fork of the relation, but also vm and fsm.
110 lines
3.9 KiB
Python
110 lines
3.9 KiB
Python
import os
|
|
import pathlib
|
|
|
|
from contextlib import closing
|
|
from fixtures.neon_fixtures import NeonEnv, check_restored_datadir_content
|
|
from fixtures.log_helper import log
|
|
|
|
|
|
#
|
|
# Test CREATE DATABASE when there have been relmapper changes
|
|
#
|
|
def test_createdb(neon_simple_env: NeonEnv):
|
|
env = neon_simple_env
|
|
env.neon_cli.create_branch('test_createdb', 'empty')
|
|
|
|
pg = env.postgres.create_start('test_createdb')
|
|
log.info("postgres is running on 'test_createdb' branch")
|
|
|
|
with closing(pg.connect()) as conn:
|
|
with conn.cursor() as cur:
|
|
# Cause a 'relmapper' change in the original branch
|
|
cur.execute('VACUUM FULL pg_class')
|
|
|
|
cur.execute('CREATE DATABASE foodb')
|
|
|
|
cur.execute('SELECT pg_current_wal_insert_lsn()')
|
|
lsn = cur.fetchone()[0]
|
|
|
|
# Create a branch
|
|
env.neon_cli.create_branch('test_createdb2', 'test_createdb', ancestor_start_lsn=lsn)
|
|
pg2 = env.postgres.create_start('test_createdb2')
|
|
|
|
# Test that you can connect to the new database on both branches
|
|
for db in (pg, pg2):
|
|
with closing(db.connect(dbname='foodb')) as conn:
|
|
with conn.cursor() as cur:
|
|
# Check database size in both branches
|
|
cur.execute("""
|
|
select pg_size_pretty(pg_database_size('foodb')),
|
|
pg_size_pretty(
|
|
sum(pg_relation_size(oid, 'main'))
|
|
+sum(pg_relation_size(oid, 'vm'))
|
|
+sum(pg_relation_size(oid, 'fsm'))
|
|
) FROM pg_class where relisshared is false
|
|
""")
|
|
res = cur.fetchone()
|
|
# check that dbsize equals sum of all relation sizes, excluding shared ones
|
|
# This is how we define dbsize in neon for now
|
|
assert res[0] == res[1]
|
|
|
|
|
|
#
|
|
# Test DROP DATABASE
|
|
#
|
|
def test_dropdb(neon_simple_env: NeonEnv, test_output_dir):
|
|
env = neon_simple_env
|
|
env.neon_cli.create_branch('test_dropdb', 'empty')
|
|
pg = env.postgres.create_start('test_dropdb')
|
|
log.info("postgres is running on 'test_dropdb' branch")
|
|
|
|
with closing(pg.connect()) as conn:
|
|
with conn.cursor() as cur:
|
|
cur.execute('CREATE DATABASE foodb')
|
|
|
|
cur.execute('SELECT pg_current_wal_insert_lsn()')
|
|
lsn_before_drop = cur.fetchone()[0]
|
|
|
|
cur.execute("SELECT oid FROM pg_database WHERE datname='foodb';")
|
|
dboid = cur.fetchone()[0]
|
|
|
|
with closing(pg.connect()) as conn:
|
|
with conn.cursor() as cur:
|
|
cur.execute('DROP DATABASE foodb')
|
|
|
|
cur.execute('CHECKPOINT')
|
|
|
|
cur.execute('SELECT pg_current_wal_insert_lsn()')
|
|
lsn_after_drop = cur.fetchone()[0]
|
|
|
|
# Create two branches before and after database drop.
|
|
env.neon_cli.create_branch('test_before_dropdb',
|
|
'test_dropdb',
|
|
ancestor_start_lsn=lsn_before_drop)
|
|
pg_before = env.postgres.create_start('test_before_dropdb')
|
|
|
|
env.neon_cli.create_branch('test_after_dropdb',
|
|
'test_dropdb',
|
|
ancestor_start_lsn=lsn_after_drop)
|
|
pg_after = env.postgres.create_start('test_after_dropdb')
|
|
|
|
# Test that database exists on the branch before drop
|
|
pg_before.connect(dbname='foodb').close()
|
|
|
|
# Test that database subdir exists on the branch before drop
|
|
assert pg_before.pgdata_dir
|
|
dbpath = pathlib.Path(pg_before.pgdata_dir) / 'base' / str(dboid)
|
|
log.info(dbpath)
|
|
|
|
assert os.path.isdir(dbpath) == True
|
|
|
|
# Test that database subdir doesn't exist on the branch after drop
|
|
assert pg_after.pgdata_dir
|
|
dbpath = pathlib.Path(pg_after.pgdata_dir) / 'base' / str(dboid)
|
|
log.info(dbpath)
|
|
|
|
assert os.path.isdir(dbpath) == False
|
|
|
|
# Check that we restore the content of the datadir correctly
|
|
check_restored_datadir_content(test_output_dir, env, pg)
|