path: root/test/test_python_procman.py

import re
import time
import subprocess
import unittest
import unit

class TestUnitPythonProcman(unit.TestUnitApplicationPython):

    def setUpClass():
        unit.TestUnit().check_modules('python')

    def pids_for_process(self):
        time.sleep(0.2)

        output = subprocess.check_output(['ps', 'ax'])

        pids = set()
        for m in re.findall('.*' + self.app_name, output.decode()):
            pids.add(re.search('^\s*(\d+)', m).group(1))

        return pids

    def setUp(self):
        super().setUp()

        self.app_name = "app-" + self.testdir.split('/')[-1]
        self.load('empty', self.app_name)

    def test_python_processes_access(self):
        self.conf('1', 'applications/' + self.app_name + '/processes')

        self.assertIn('error', self.conf_get('/applications/' + self.app_name +
            '/processes/max'), 'max no access')
        self.assertIn('error', self.conf_get('/applications/' + self.app_name +
            '/processes/spare'), 'spare no access')
        self.assertIn('error', self.conf_get('/applications/' + self.app_name +
            '/processes/idle_timeout'), 'idle_timeout no access')

    def test_python_processes_spare_negative(self):
        self.assertIn('error', self.conf({
            "spare": -1
        }, 'applications/' + self.app_name + '/processes'), 'negative spare')

    def test_python_processes_max_negative(self):
        self.assertIn('error', self.conf({
            "max": -1
        }, 'applications/' + self.app_name + '/processes'), 'negative max')

    def test_python_processes_idle_timeout_negative(self):
        self.assertIn('error', self.conf({
            "idle_timeout": -1
        }, 'applications/' + self.app_name + '/processes'),
            'negative idle_timeout')

    def test_python_processes_spare_gt_max_default(self):
        self.assertIn('error', self.conf({"spare": 2},
            'applications/' + self.app_name + '/processes'),
            'spare greater than max default')

    def test_python_processes_spare_gt_max(self):
        self.assertIn('error', self.conf({
            "spare": 2,
            "max": 1,
            "idle_timeout": 1
        }, '/applications/' + self.app_name + '/processes'),
            'spare greater than max')

    def test_python_processes_max_zero(self):
        self.assertIn('error', self.conf({
            "spare": 0,
            "max": 0,
            "idle_timeout": 1
        }, 'applications/' + self.app_name + '/processes'), 'max 0')

    def test_python_processes_idle_timeout_zero(self):
        self.conf({
            "spare": 0,
            "max": 2,
            "idle_timeout": 0
        }, 'applications/' + self.app_name + '/processes')

        self.get()
        self.assertEqual(len(self.pids_for_process()), 0, 'idle timeout 0')

    def test_python_prefork(self):
        self.conf('2', 'applications/' + self.app_name + '/processes')

        pids = self.pids_for_process()
        self.assertEqual(len(pids), 2, 'prefork 2')

        self.get()
        self.assertSetEqual(self.pids_for_process(), pids, 'prefork still 2')

        self.conf('4', 'applications/' + self.app_name + '/processes')

        pids = self.pids_for_process()
        self.assertEqual(len(pids), 4, 'prefork 4')

        self.get()
        self.assertSetEqual(self.pids_for_process(), pids, 'prefork still 4')

        self.stop_all()

    @unittest.expectedFailure
    def test_python_prefork_same_processes(self):
        self.conf('2', 'applications/' + self.app_name + '/processes')

        pids = self.pids_for_process()

        self.conf('4', 'applications/' + self.app_name + '/processes')

        pids_new = self.pids_for_process()

        self.assertTrue(pids.issubset(pids_new), 'prefork same processes')

    def test_python_ondemand(self):
        self.conf({
            "spare": 0,
            "max": 8,
            "idle_timeout": 1
        }, 'applications/' + self.app_name + '/processes')

        self.assertEqual(len(self.pids_for_process()), 0, 'on-demand 0')

        self.get()
        pids = self.pids_for_process()
        self.assertEqual(len(pids), 1, 'on-demand 1')

        self.get()
        self.assertSetEqual(self.pids_for_process(), pids, 'on-demand still 1')

        time.sleep(1)

        self.assertEqual(len(self.pids_for_process()), 0, 'on-demand stop idle')

        self.stop_all()

    def test_python_scale_updown(self):
        self.conf({
            "spare": 2,
            "max": 8,
            "idle_timeout": 1
        }, 'applications/' + self.app_name + '/processes')

        pids = self.pids_for_process()
        self.assertEqual(len(pids), 2, 'updown 2')

        self.get()
        pids_new = self.pids_for_process()
        self.assertEqual(len(pids_new), 3, 'updown 3')
        self.assertTrue(pids.issubset(pids_new), 'updown 3 only 1 new')

        self.get()
        self.assertSetEqual(self.pids_for_process(), pids_new, 'updown still 3')

        time.sleep(1)

        pids = self.pids_for_process()
        self.assertEqual(len(pids), 2, 'updown stop idle')

        self.get()
        pids_new = self.pids_for_process()
        self.assertEqual(len(pids_new), 3, 'updown again 3')
        self.assertTrue(pids.issubset(pids_new), 'updown again 3 only 1 new')

        self.stop_all()

    def test_python_reconfigure(self):
        self.conf({
            "spare": 2,
            "max": 6,
            "idle_timeout": 1
        }, 'applications/' + self.app_name + '/processes')

        pids = self.pids_for_process()
        self.assertEqual(len(pids), 2, 'reconf 2')

        self.get()
        pids_new = self.pids_for_process()
        self.assertEqual(len(pids_new), 3, 'reconf 3')
        self.assertTrue(pids.issubset(pids_new), 'reconf 3 only 1 new')

        self.conf('6', 'applications/' + self.app_name + '/processes/spare')

        pids = self.pids_for_process()
        self.assertEqual(len(pids), 6, 'reconf 6')

        self.get()
        self.assertSetEqual(self.pids_for_process(), pids, 'reconf still 6')

        self.stop_all()

    def test_python_idle_timeout(self):
        self.conf({
            "spare": 0,
            "max": 6,
            "idle_timeout": 2
        }, 'applications/' + self.app_name + '/processes')

        self.get()
        pids = self.pids_for_process()
        self.assertEqual(len(pids), 1, 'idle timeout 1')

        time.sleep(1)

        self.get()

        time.sleep(1)

        pids_new = self.pids_for_process()
        self.assertEqual(len(pids_new), 1, 'idle timeout still 1')
        self.assertSetEqual(self.pids_for_process(), pids,
            'idle timeout still 1 same pid')

        time.sleep(1)

        self.assertEqual(len(self.pids_for_process()), 0, 'idle timed out')

    def test_python_processes_connection_keepalive(self):
        self.conf({
            "spare": 0,
            "max": 6,
            "idle_timeout": 2
        }, 'applications/' + self.app_name + '/processes')

        (resp, sock) = self.get(headers={
            'Host': 'localhost',
            'Connection': 'keep-alive'
        }, start=True, read_timeout=1)
        self.assertEqual(len(self.pids_for_process()), 1,
            'keepalive connection 1')

        time.sleep(2)

        self.assertEqual(len(self.pids_for_process()), 0, 'keepalive connection 0')

        sock.close()

    def stop_all(self):
        self.conf({
            "listeners": {},
            "applications": {}
        })

        self.assertEqual(len(self.pids_for_process()), 0, 'stop all')

if __name__ == '__main__':
    TestUnitPythonProcman.main()