96 lines
3 KiB
Python
96 lines
3 KiB
Python
import re
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import subprocess
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import time
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from unit.applications.lang.python import TestApplicationPython
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from unit.option import option
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class TestRespawn(TestApplicationPython):
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prerequisites = {'modules': {'python': 'any'}}
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PATTERN_ROUTER = 'unit: router'
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PATTERN_CONTROLLER = 'unit: controller'
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def setup_method(self):
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self.app_name = "app-" + option.temp_dir.split('/')[-1]
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self.load('empty', self.app_name)
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assert 'success' in self.conf(
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'1', 'applications/' + self.app_name + '/processes'
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)
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def pid_by_name(self, name, ppid):
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output = subprocess.check_output(['ps', 'ax', '-O', 'ppid']).decode()
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m = re.search(r'\s*(\d+)\s*' + str(ppid) + r'.*' + name, output)
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return None if m is None else m.group(1)
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def kill_pids(self, *pids):
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subprocess.call(['kill', '-9'] + list(pids))
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def wait_for_process(self, process, unit_pid):
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for i in range(50):
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found = self.pid_by_name(process, unit_pid)
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if found is not None:
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break
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time.sleep(0.1)
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return found
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def find_proc(self, name, ppid, ps_output):
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return re.findall(str(ppid) + r'.*' + name, ps_output)
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def smoke_test(self, unit_pid):
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for _ in range(5):
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assert 'success' in self.conf(
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'1', 'applications/' + self.app_name + '/processes'
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)
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assert self.get()['status'] == 200
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# Check if the only one router, controller,
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# and application processes running.
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out = subprocess.check_output(['ps', 'ax', '-O', 'ppid']).decode()
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assert len(self.find_proc(self.PATTERN_ROUTER, unit_pid, out)) == 1
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assert len(self.find_proc(self.PATTERN_CONTROLLER, unit_pid, out)) == 1
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assert len(self.find_proc(self.app_name, unit_pid, out)) == 1
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def test_respawn_router(self, skip_alert, unit_pid, skip_fds_check):
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skip_fds_check(router=True)
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pid = self.pid_by_name(self.PATTERN_ROUTER, unit_pid)
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self.kill_pids(pid)
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skip_alert(r'process %s exited on signal 9' % pid)
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assert self.wait_for_process(self.PATTERN_ROUTER, unit_pid) is not None
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self.smoke_test(unit_pid)
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def test_respawn_controller(self, skip_alert, unit_pid, skip_fds_check):
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skip_fds_check(controller=True)
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pid = self.pid_by_name(self.PATTERN_CONTROLLER, unit_pid)
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self.kill_pids(pid)
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skip_alert(r'process %s exited on signal 9' % pid)
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assert (
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self.wait_for_process(self.PATTERN_CONTROLLER, unit_pid)
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is not None
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)
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assert self.get()['status'] == 200
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self.smoke_test(unit_pid)
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def test_respawn_application(self, skip_alert, unit_pid):
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pid = self.pid_by_name(self.app_name, unit_pid)
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self.kill_pids(pid)
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skip_alert(r'process %s exited on signal 9' % pid)
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assert self.wait_for_process(self.app_name, unit_pid) is not None
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self.smoke_test(unit_pid)
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