Add process check (#23)

This patch adds a check for running processes along with tests.
This commit is contained in:
Major Hayden 2017-03-10 15:49:11 -06:00 committed by GitHub
parent 10e9634213
commit 79d23cd713
5 changed files with 142 additions and 1 deletions

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@ -113,6 +113,7 @@ def process_result(result, output_format, verbose):
method_name
)
output_formatter(result)
sys.exit(result['exit_code'])
if __name__ == '__main__':

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@ -0,0 +1,79 @@
# Copyright 2017, Major Hayden <major@mhtx.net>
#
# Licensed 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.
"""Get system uptime."""
import os
import platform
import click
from monitorstack.cli import pass_context
import psutil
DOC = """Check if a process is running."""
COMMAND_NAME = 'process'
@click.command(COMMAND_NAME, short_help=DOC)
@click.argument('process_name', nargs=1, type=str, required=True)
@pass_context
def cli(ctx, process_name):
"""Check if a process is running."""
setattr(cli, '__doc__', DOC)
output = {
'exit_code': 0,
'message': 'process check is ok',
'measurement_name': 'process',
'meta': {
'platform': platform.platform(),
},
'variables': {}
}
if check_process(process_name):
output['variables'] = {process_name: 1}
else:
output['exit_code'] = 1
output['message'] = '{} failed -- Process {} not found'.format(
COMMAND_NAME,
process_name
)
output['variables'] = {process_name: 0}
return output
def check_process(process_name):
"""Check if a process is in the list of cmdlines."""
matches = [x for x in get_cmdlines() if process_name in x]
return True if len(matches) > 0 else False
def get_cmdlines():
"""Retrieve the cmdline of each process running on the system."""
processes = []
# Get our current PID as well as the parent so we can exclude them.
current_pid = os.getpid()
parent_pid = os.getppid()
for proc in psutil.process_iter():
try:
if proc.pid not in [current_pid, parent_pid]:
processes.append(' '.join(proc.cmdline()))
except psutil.NoSuchProcess:
pass
return processes

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@ -1,4 +1,5 @@
click
openstacksdk>=0.9.14
psutil>=5.2.0
six
stevedore

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@ -48,7 +48,6 @@ def mock_get_consumer_usage(self):
'id': 1,
'name': 'flavor_one',
}
}]

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@ -0,0 +1,61 @@
# Copyright 2017, Major Hayden <major@mhtx.net>
#
# Licensed 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.
"""Tests for the process plugin."""
import json
from click.testing import CliRunner
from monitorstack.cli import cli
from monitorstack.plugins import process
class TestUptime(object):
"""Tests for the uptime monitor class."""
def test_run_failure(self):
"""Ensure the run() method works."""
runner = CliRunner()
process_name = 'dont-go-chasing-waterfalls'
result = runner.invoke(cli, [
'-f', 'json',
'process', process_name])
result_json = json.loads(result.output)
assert result_json['variables'] == {process_name: 0}
assert result.exit_code == 1
def test_run_success(self):
"""Ensure the run() method works."""
runner = CliRunner()
process_name = '/'
result = runner.invoke(cli, [
'-f', 'json',
'process', process_name])
result_json = json.loads(result.output)
assert result_json['variables'] == {process_name: 1}
assert result.exit_code == 0
def test_check_process_success(self, monkeypatch):
"""Ensure the check_process() method works."""
def mock_get_cmdlines():
return ['process1', 'process2']
monkeypatch.setattr(process, 'get_cmdlines', mock_get_cmdlines)
result = process.check_process('process2')
assert result
def test_get_cmdlines(self):
"""Ensure the get_cmdlines() method works."""
cmdlines = process.get_cmdlines()
assert isinstance(cmdlines, list)