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# Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
# This source code is licensed under both the GPLv2 (found in the
# COPYING file in the root directory) and Apache 2.0 License
# (found in the LICENSE.Apache file in the root directory).
import os
import unittest
from advisor.rule_parser import RulesSpec
from advisor.db_log_parser import DatabaseLogs, DataSource
from advisor.db_options_parser import DatabaseOptions
RuleToSuggestions = {
"stall-too-many-memtables": [
'inc-bg-flush',
'inc-write-buffer'
],
"stall-too-many-L0": [
'inc-max-subcompactions',
'inc-max-bg-compactions',
'inc-write-buffer-size',
'dec-max-bytes-for-level-base',
'inc-l0-slowdown-writes-trigger'
],
"stop-too-many-L0": [
'inc-max-bg-compactions',
'inc-write-buffer-size',
'inc-l0-stop-writes-trigger'
],
"stall-too-many-compaction-bytes": [
'inc-max-bg-compactions',
'inc-write-buffer-size',
'inc-hard-pending-compaction-bytes-limit',
'inc-soft-pending-compaction-bytes-limit'
],
"level0-level1-ratio": [
'l0-l1-ratio-health-check'
]
}
class TestAllRulesTriggered(unittest.TestCase):
def setUp(self):
# load the Rules
this_path = os.path.abspath(os.path.dirname(__file__))
ini_path = os.path.join(this_path, 'input_files/triggered_rules.ini')
self.db_rules = RulesSpec(ini_path)
self.db_rules.load_rules_from_spec()
self.db_rules.perform_section_checks()
# load the data sources: LOG and OPTIONS
log_path = os.path.join(this_path, 'input_files/LOG-0')
options_path = os.path.join(this_path, 'input_files/OPTIONS-000005')
db_options_parser = DatabaseOptions(options_path)
self.column_families = db_options_parser.get_column_families()
db_logs_parser = DatabaseLogs(log_path, self.column_families)
self.data_sources = {
DataSource.Type.DB_OPTIONS: [db_options_parser],
DataSource.Type.LOG: [db_logs_parser]
}
def test_triggered_conditions(self):
conditions_dict = self.db_rules.get_conditions_dict()
rules_dict = self.db_rules.get_rules_dict()
# Make sure none of the conditions is triggered beforehand
for cond in conditions_dict.values():
self.assertFalse(cond.is_triggered(), repr(cond))
for rule in rules_dict.values():
self.assertFalse(
rule.is_triggered(conditions_dict, self.column_families),
repr(rule)
)
# # Trigger the conditions as per the data sources.
# trigger_conditions(, conditions_dict)
# Get the set of rules that have been triggered
triggered_rules = self.db_rules.get_triggered_rules(
self.data_sources, self.column_families
)
# Make sure each condition and rule is triggered
for cond in conditions_dict.values():
if cond.get_data_source() is DataSource.Type.TIME_SERIES:
continue
self.assertTrue(cond.is_triggered(), repr(cond))
for rule in rules_dict.values():
self.assertIn(rule, triggered_rules)
# Check the suggestions made by the triggered rules
for sugg in rule.get_suggestions():
self.assertIn(sugg, RuleToSuggestions[rule.name])
for rule in triggered_rules:
self.assertIn(rule, rules_dict.values())
for sugg in RuleToSuggestions[rule.name]:
self.assertIn(sugg, rule.get_suggestions())
class TestConditionsConjunctions(unittest.TestCase):
def setUp(self):
# load the Rules
this_path = os.path.abspath(os.path.dirname(__file__))
ini_path = os.path.join(this_path, 'input_files/test_rules.ini')
self.db_rules = RulesSpec(ini_path)
self.db_rules.load_rules_from_spec()
self.db_rules.perform_section_checks()
# load the data sources: LOG and OPTIONS
log_path = os.path.join(this_path, 'input_files/LOG-1')
options_path = os.path.join(this_path, 'input_files/OPTIONS-000005')
db_options_parser = DatabaseOptions(options_path)
self.column_families = db_options_parser.get_column_families()
db_logs_parser = DatabaseLogs(log_path, self.column_families)
self.data_sources = {
DataSource.Type.DB_OPTIONS: [db_options_parser],
DataSource.Type.LOG: [db_logs_parser]
}
def test_condition_conjunctions(self):
conditions_dict = self.db_rules.get_conditions_dict()
rules_dict = self.db_rules.get_rules_dict()
# Make sure none of the conditions is triggered beforehand
for cond in conditions_dict.values():
self.assertFalse(cond.is_triggered(), repr(cond))
for rule in rules_dict.values():
self.assertFalse(
rule.is_triggered(conditions_dict, self.column_families),
repr(rule)
)
# Trigger the conditions as per the data sources.
self.db_rules.trigger_conditions(self.data_sources)
# Check for the conditions
conds_triggered = ['log-1-true', 'log-2-true', 'log-3-true']
conds_not_triggered = ['log-4-false', 'options-1-false']
for cond in conds_triggered:
self.assertTrue(conditions_dict[cond].is_triggered(), repr(cond))
for cond in conds_not_triggered:
self.assertFalse(conditions_dict[cond].is_triggered(), repr(cond))
# Check for the rules
rules_triggered = ['multiple-conds-true']
rules_not_triggered = [
'single-condition-false',
'multiple-conds-one-false',
'multiple-conds-all-false'
]
for rule_name in rules_triggered:
rule = rules_dict[rule_name]
self.assertTrue(
rule.is_triggered(conditions_dict, self.column_families),
repr(rule)
)
for rule_name in rules_not_triggered:
rule = rules_dict[rule_name]
self.assertFalse(
rule.is_triggered(conditions_dict, self.column_families),
repr(rule)
)
class TestSanityChecker(unittest.TestCase):
def setUp(self):
this_path = os.path.abspath(os.path.dirname(__file__))
ini_path = os.path.join(this_path, 'input_files/rules_err1.ini')
db_rules = RulesSpec(ini_path)
db_rules.load_rules_from_spec()
self.rules_dict = db_rules.get_rules_dict()
self.conditions_dict = db_rules.get_conditions_dict()
self.suggestions_dict = db_rules.get_suggestions_dict()
def test_rule_missing_suggestions(self):
regex = '.*rule must have at least one suggestion.*'
with self.assertRaisesRegex(ValueError, regex):
self.rules_dict['missing-suggestions'].perform_checks()
def test_rule_missing_conditions(self):
regex = '.*rule must have at least one condition.*'
with self.assertRaisesRegex(ValueError, regex):
self.rules_dict['missing-conditions'].perform_checks()
def test_condition_missing_regex(self):
regex = '.*provide regex for log condition.*'
with self.assertRaisesRegex(ValueError, regex):
self.conditions_dict['missing-regex'].perform_checks()
def test_condition_missing_options(self):
regex = '.*options missing in condition.*'
with self.assertRaisesRegex(ValueError, regex):
self.conditions_dict['missing-options'].perform_checks()
def test_condition_missing_expression(self):
regex = '.*expression missing in condition.*'
with self.assertRaisesRegex(ValueError, regex):
self.conditions_dict['missing-expression'].perform_checks()
def test_suggestion_missing_option(self):
regex = '.*provide option or description.*'
with self.assertRaisesRegex(ValueError, regex):
self.suggestions_dict['missing-option'].perform_checks()
def test_suggestion_missing_description(self):
regex = '.*provide option or description.*'
with self.assertRaisesRegex(ValueError, regex):
self.suggestions_dict['missing-description'].perform_checks()
class TestParsingErrors(unittest.TestCase):
def setUp(self):
self.this_path = os.path.abspath(os.path.dirname(__file__))
def test_condition_missing_source(self):
ini_path = os.path.join(self.this_path, 'input_files/rules_err2.ini')
db_rules = RulesSpec(ini_path)
regex = '.*provide source for condition.*'
with self.assertRaisesRegex(NotImplementedError, regex):
db_rules.load_rules_from_spec()
def test_suggestion_missing_action(self):
ini_path = os.path.join(self.this_path, 'input_files/rules_err3.ini')
db_rules = RulesSpec(ini_path)
regex = '.*provide action for option.*'
with self.assertRaisesRegex(ValueError, regex):
db_rules.load_rules_from_spec()
def test_section_no_name(self):
ini_path = os.path.join(self.this_path, 'input_files/rules_err4.ini')
db_rules = RulesSpec(ini_path)
regex = 'Parsing error: needed section header:.*'
with self.assertRaisesRegex(ValueError, regex):
db_rules.load_rules_from_spec()
if __name__ == '__main__':
unittest.main()
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