maksaska commented on code in PR #13575: URL: https://github.com/apache/ignite/pull/13575#discussion_r4145092647
########## modules/ducktests/tests/checks/utils/check_metric_registry_pattern.py: ########## @@ -0,0 +1,124 @@ +# Licensed to the Apache Software Foundation (ASF) under one or more +# contributor license agreements. See the NOTICE file distributed with +# this work for additional information regarding copyright ownership. +# The ASF licenses this file to You under the Apache License, Version 2.0 +# (the "License"); you may not use this file except in compliance with +# the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +""" +Checks the MBean name pattern of a metric registry. + +The pattern is grepped against the MBean list of a node, so it is checked here the same way: +the match has to cover the WHOLE object name, since that name is what the following +'get -b <name>' is issued against. Every case runs through Python's re and, where a grep is +installed, through 'grep -E' itself - the pattern is an ERE, not a Python regular expression. +""" +import re +import shutil +import subprocess + +import pytest + +from ignitetest.services.utils.jmx_utils import metric_registry_pattern + +# MBean names as a node prints them: the properties are ordered alphabetically, which puts +# the instance name between the group and the name. +PREFIX = "org.apache:clsLdr=3e2a56ab,group=%s,igniteInstanceName=ducker01,name=%s" +NO_GROUP_PREFIX = "org.apache:clsLdr=3e2a56ab,igniteInstanceName=ducker01,name=%s" + +GREP = shutil.which("grep") + + +def python_grep(pattern, negative_pattern, mbean_name): + """ + :return: The part of the name the patterns leave, as 'grep -E -o | grep -E -v' would return it. + """ + match = re.search(pattern, mbean_name) + + if not match or (negative_pattern and re.search(negative_pattern, match.group())): + return None + + return match.group() + + +def real_grep(tmp_path, pattern, negative_pattern, mbean_name): + """ + :return: The same as :func:`python_grep`, but produced by 'grep -E' itself. The patterns go + through files, since a quote in a command line argument does not survive Windows. + """ + def grep(flag, grep_pattern, text): + pattern_file = tmp_path / f"pattern{flag}" + pattern_file.write_bytes((grep_pattern + "\n").encode()) + + return subprocess.run([GREP, "-E", flag, "-f", str(pattern_file)], input=text.encode(), + capture_output=True).stdout.decode() + + out = grep("-o", pattern, mbean_name + "\n") + + if out and negative_pattern: + out = grep("-v", negative_pattern, out) + + return out.strip() or None + + +# (registry, MBean name, whether the registry's pattern must match that name) +CASES = [ + # A purely alphanumeric name is registered without quotes. + ("cache.myCache", PREFIX % ("cache", "myCache"), True), + ("cache.cache_1", PREFIX % ("cache", "cache_1"), True), + # Anything else - a dash is enough - is registered quoted, closing quote included. + ("cache.my-cache", PREFIX % ("cache", '"my-cache"'), True), + ("cache.mdc-demo-backup-filter", PREFIX % ("cache", '"mdc-demo-backup-filter"'), True), + # Only the FIRST dot splits the registry, so the rest of it is the MBean name. + ("io.dataregion.default", PREFIX % ("io", '"dataregion.default"'), True), + # 'cache' must not pick up 'cacheGroups': the two hold different metrics of the same cache. + ("cache.my-cache", PREFIX % ("cacheGroups", '"my-cache"'), False), + ("cacheGroups.my-cache", PREFIX % ("cacheGroups", '"my-cache"'), True), + # 'name' sorts last, so the pattern ends at the end of the line and a longer name does not answer. + ("cache.myCache", PREFIX % ("cache", "myCacheV2"), False), + ("cache.my-cache", PREFIX % ("cache", '"my-cache-2"'), False), + # The name is matched literally, ERE metacharacters included. + ("cache.my.cache", PREFIX % ("cache", '"myXcache"'), False), + ("cache.my.cache", PREFIX % ("cache", '"my.cache"'), True), + ("cache.a(b)+c", PREFIX % ("cache", '"a(b)+c"'), True), + ("cache.a(b)+c", PREFIX % ("cache", '"abbc"'), False), + # Characters that are special only right after an opening '[' or '{' stay unescaped. + ("cache.a]b}c", PREFIX % ("cache", '"a]b}c"'), True), + ("cache.a[b]{2}", PREFIX % ("cache", '"a[b]{2}"'), True), + ("cache.a[b]{2}", PREFIX % ("cache", '"abb"'), False), + # The exporter escapes '*' inside the quotes. + ("cache.a*b", PREFIX % ("cache", r'"a\*b"'), True), + # A registry without a dot has no group, and must not pick up the system view of the same name. + ("snapshot", NO_GROUP_PREFIX % "snapshot", True), + ("snapshot", PREFIX % ("views", "snapshot"), False), + ("cdc", PREFIX % ("cdc", "consumer"), False), +] + + +class CheckMetricRegistryPattern: Review Comment: Agree. 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