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Added/Updated tests\bugs\gh_8077_test.py: Checked on 6.0.0.362, 5.0.1.1408, 4.0.5.3103 (all SS/CS).
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pavel-zotov
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tests/bugs/gh_8077_test.py
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158
tests/bugs/gh_8077_test.py
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#coding:utf-8
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"""
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ID: issue-8077
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ISSUE: https://github.com/FirebirdSQL/firebird/issues/8077
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TITLE: Error "Too many recursion levels" does not stop execuition of code that uses ON DISCONNECT trigger (FB 4.x+)
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DESCRIPTION:
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Test creates DB-triggers 'ON CONNECT' and 'ON DISCONNECT', plus table 'LOG' for logging actions performed by DB-triggers.
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Trigger 'ON DISCONNECT' makes EDS with new role thus creating new connection which will then be immediately finished and,
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in turn, fire again this trigger. Eventually this must cause ISQL to terminate and firebird.log must contain errors.
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Difference between old and new firebird.log must contain exactly two errors about detahc problem
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(Error at disconnect: / Execute statement error at attach : / 335544830 : Too many recursion levels of EXECUTE STATEMENT)
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NOTES:
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[27.05.2024] pzotov
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Time of ISQL execution is limited by MAX_WAIT_FOR_ISQL_TERMINATE seconds. Currently it is ~6s for SS and ~18s for CS.
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Checked on 6.0.0.362, 5.0.1.1408, 4.0.5.3103 (all SS/CS).
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"""
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import re
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from difflib import unified_diff
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import pytest
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import time
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from pathlib import Path
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import subprocess
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import locale
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import firebird.driver
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from firebird.qa import *
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db = db_factory()
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substitutions = [
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('^((?!(E|e)rror|statement|recursion|source|rdb_trg|trigger|ext_pool_active|isql_outcome).)*$', '')
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,('Execute statement error.*', 'Execute statement error')
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,('Firebird::.*', 'Firebird::')
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,('line(:)?\\s+\\d+.*', '')
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,('[ \t]+', ' ')
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]
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act = python_act('db', substitutions = substitutions)
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tmp_sql = temp_file('tmp_8077.sql')
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tmp_log = temp_file('tmp_8077.log')
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MAX_WAIT_FOR_ISQL_BEGIN_WORK=0.5
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MAX_WAIT_FOR_ISQL_TERMINATE=30
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#--------------------------------------------------------------------
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@pytest.mark.version('>=4.0.5')
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def test_1(act: Action, tmp_sql: Path, tmp_log: Path, capsys):
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test_sql = f"""
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set list on;
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set bail on;
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set term ^;
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create or alter trigger trg_attach on connect as begin end
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^
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recreate table log( att bigint default current_connection, event_name varchar(6) )
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^
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create or alter trigger trg_attach on connect as
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declare v_pool_size int;
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begin
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in autonomous transaction do
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insert into log(event_name) values ('attach');
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end
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^
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create or alter trigger trg_detach on disconnect as
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begin
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execute statement ('insert into log(event_name) values(?)') ('detach')
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with autonomous transaction
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on external 'localhost:' || rdb$get_context('SYSTEM', 'DB_NAME')
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as user '{act.db.user}' password '{act.db.password}' role 'R' || replace(uuid_to_char(gen_uuid()),'-','')
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;
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end
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^
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set term ;^
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commit;
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select
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rdb$trigger_name as "rdb_trg_name"
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,rdb$trigger_type as "rdb_trg_type"
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from rdb$triggers
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where rdb$system_flag is distinct from 1
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order by rdb$trigger_name;
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rollback;
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connect '{act.db.dsn}' user {act.db.user} password '{act.db.password}';
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select cast(rdb$get_context('SYSTEM', 'EXT_CONN_POOL_SIZE') as int) as "ext_pool_size_1" from rdb$database;
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quit;
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"""
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with open(tmp_sql, 'w') as f:
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f.write(test_sql)
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# Get Firebird log before test
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# ----------------------------
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fb_log_init = act.get_firebird_log()
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failed_finish_isql_msg = ''
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with act.db.connect() as con:
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with open(tmp_log, 'w') as f:
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try:
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p_handed_isql = subprocess.Popen( [act.vars['isql'], '-i', str(tmp_sql),
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'-user', act.db.user,
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'-password', act.db.password, act.db.dsn],
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stdout = f,
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stderr = subprocess.STDOUT
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)
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for i in range(MAX_WAIT_FOR_ISQL_TERMINATE):
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time.sleep(1)
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# Check if child process has terminated.
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# Set and return returncode attribute. Otherwise, returns None.
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if p_handed_isql.poll() is not None:
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break
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finally:
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p_handed_isql.terminate()
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if p_handed_isql.poll() is None:
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failed_finish_isql_msg = f'isql_outcome: process WAS NOT terminated in {MAX_WAIT_FOR_ISQL_TERMINATE} second. Probably MAX_WAIT_FOR_ISQL_TERMINATE value must be increased.'
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# Get Firebird log after test
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# ----------------------------
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fb_log_curr = act.get_firebird_log()
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with open(tmp_log, 'a') as f:
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if failed_finish_isql_msg:
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f.write(failed_finish_isql_msg+'\n')
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for line in unified_diff(fb_log_init, fb_log_curr):
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if line.startswith('+'):
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f.write(line[1:] + '\n')
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expected_stdout = f"""
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rdb_trg_name TRG_ATTACH
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rdb_trg_type 8192
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rdb_trg_name TRG_DETACH
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rdb_trg_type 8193
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Error at disconnect:
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Execute statement error at attach :
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335544830 : Too many recursion levels of EXECUTE STATEMENT
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Data source : Firebird::
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At trigger 'TRG_DETACH'
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Error at disconnect:
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Execute statement error at attach :
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335544830 : Too many recursion levels of EXECUTE STATEMENT
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Data source : Firebird::
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At trigger 'TRG_DETACH'
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"""
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with open(tmp_log, 'r') as f:
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for line in f:
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print(line)
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act.expected_stdout = expected_stdout
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act.stdout = capsys.readouterr().out
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assert act.clean_stdout == act.clean_expected_stdout
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act.reset()
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