147 lines
9.8 KiB
Python
147 lines
9.8 KiB
Python
import concurrent.futures,http.client,pathlib,socket,sys,tempfile,threading,time,unittest
|
|
from adapter import ReadinessServer
|
|
class AdapterTests(unittest.TestCase):
|
|
def setUp(self):
|
|
self.tmp=tempfile.TemporaryDirectory();self.root=pathlib.Path(self.tmp.name);self.marker=self.root/'ran';self.servers=[]
|
|
def tearDown(self):
|
|
for s,t in self.servers:s.shutdown();s.server_close();t.join()
|
|
self.tmp.cleanup()
|
|
def server(self,code=None,timeout=.3,slots=2,**options):
|
|
code=code or f"from pathlib import Path;Path({str(self.marker)!r}).write_text('yes')"
|
|
server=ReadinessServer(('127.0.0.1',0),token='private-test-token',path='/.well-known/apex-ready',command=[sys.executable,'-c',code],timeout=timeout,slots=slots,**options)
|
|
t=threading.Thread(target=server.serve_forever,kwargs={'poll_interval':.01},daemon=True);t.start();self.servers.append((server,t));return server
|
|
def request(self,s,path='/.well-known/apex-ready',token='private-test-token',method='GET',extra_token=False):
|
|
c=http.client.HTTPConnection(*s.server_address,timeout=3);c.putrequest(method,path)
|
|
if token is not None:c.putheader('X-APEX-Ready-Token',token)
|
|
if extra_token:c.putheader('X-APEX-Ready-Token',token)
|
|
c.endheaders();r=c.getresponse();out=(r.status,r.getheader('Cache-Control'),r.read());c.close();return out
|
|
def test_authenticated_success_runs_fixed_probe(self):
|
|
self.assertEqual(self.request(self.server()),(204,'no-store',b''));self.assertTrue(self.marker.exists())
|
|
def test_configured_three_seconds_allows_a_probe_longer_than_default(self):
|
|
code=f"import time;from pathlib import Path;time.sleep(1.6);Path({str(self.marker)!r}).write_text('completed')"
|
|
s=self.server(code,timeout=3,single_flight=True)
|
|
self.assertEqual(self.request(s),(204,'no-store',b''));self.assertEqual(self.marker.read_text(),'completed')
|
|
def test_timeout_over_three_seconds_is_rejected_before_probe(self):
|
|
with self.assertRaises(ValueError):self.server(timeout=3.01)
|
|
self.assertFalse(self.marker.exists())
|
|
def test_absent_wrong_and_duplicate_tokens_never_probe(self):
|
|
s=self.server()
|
|
for token,duplicate in [(None,False),('bad',False),('private-test-token',True)]:self.assertEqual(self.request(s,token=token,extra_token=duplicate)[0],403)
|
|
self.assertFalse(self.marker.exists())
|
|
def test_noncanonical_paths_and_methods_never_probe(self):
|
|
s=self.server()
|
|
for path in ['/other','/.well-known/apex-ready?x=1','/.well-known/%61pex-ready','//.well-known/apex-ready']:
|
|
self.assertEqual(self.request(s,path=path)[0],404)
|
|
self.assertEqual(self.request(s,method='POST')[0],405);self.assertFalse(self.marker.exists())
|
|
def test_nonzero_exit_and_missing_executable_fail_closed(self):
|
|
s=self.server('raise SystemExit(1)');self.assertEqual(self.request(s),(503,'no-store',b''));s.command=['/nonexistent/apex-probe'];self.assertEqual(self.request(s)[0],503)
|
|
def test_timeout_terminates_probe_and_descendant(self):
|
|
code=f"import subprocess,time,sys;subprocess.Popen([sys.executable,'-c',\"import time,pathlib;time.sleep(.8);pathlib.Path({str(self.marker)!r}).write_text('leaked')\"]);time.sleep(3)"
|
|
s=self.server(code,timeout=.1);start=time.monotonic();self.assertEqual(self.request(s)[0],503);self.assertLess(time.monotonic()-start,.7);time.sleep(.9);self.assertFalse(self.marker.exists())
|
|
def test_concurrency_limit_rejects_before_spawn(self):
|
|
code=f"from pathlib import Path;import time;Path({str(self.marker)!r}).write_text('yes');time.sleep(.4)"
|
|
s=self.server(code,timeout=1,slots=1)
|
|
with concurrent.futures.ThreadPoolExecutor() as pool:
|
|
first=pool.submit(self.request,s)
|
|
for _ in range(100):
|
|
if self.marker.exists():break
|
|
time.sleep(.005)
|
|
self.assertTrue(self.marker.exists());self.assertEqual(self.request(s)[0],503);self.assertEqual(first.result()[0],204)
|
|
def test_unsupported_method_is_empty_and_not_cached(self):
|
|
self.assertEqual(self.request(self.server(),method='TRACE'),(501,'no-store',b''));self.assertFalse(self.marker.exists())
|
|
def test_parser_error_is_empty_and_not_cached(self):
|
|
s=self.server()
|
|
with socket.create_connection(s.server_address,timeout=2) as sock:
|
|
sock.sendall(b'GET /.well-known/apex-ready HTTP/banana\r\n\r\n')
|
|
r=http.client.HTTPResponse(sock);r.begin();self.assertEqual((r.status,r.getheader('Cache-Control'),r.read()),(400,'no-store',b''))
|
|
self.assertFalse(self.marker.exists())
|
|
def test_no_cached_readiness(self):
|
|
s=self.server();self.assertEqual(self.request(s)[0],204);s.command=[sys.executable,'-c','raise SystemExit(1)'];self.assertEqual(self.request(s)[0],503)
|
|
def overlapping_requests(self,s,count=4):
|
|
barrier=threading.Barrier(count)
|
|
def one():
|
|
barrier.wait(timeout=2);start=time.monotonic();result=self.request(s);return result,time.monotonic()-start
|
|
with concurrent.futures.ThreadPoolExecutor(max_workers=count) as pool:return list(pool.map(lambda _:one(),range(count)))
|
|
def test_browser_asset_burst_connects_and_shares_one_slow_probe(self):
|
|
code=f"import pathlib,time;p=pathlib.Path({str(self.marker)!r});f=p.open('a');f.write('probe\\n');f.close();time.sleep(.8)"
|
|
s=self.server(code,timeout=3,slots=16,single_flight=True)
|
|
process_request=s.process_request
|
|
def delayed_accept(request,address):
|
|
time.sleep(.01)
|
|
process_request(request,address)
|
|
s.process_request=delayed_accept
|
|
barrier=threading.Barrier(32)
|
|
def one(_):
|
|
barrier.wait(timeout=2)
|
|
c=http.client.HTTPConnection(*s.server_address,timeout=.5)
|
|
try:
|
|
c.connect();c.sock.settimeout(3)
|
|
c.request('GET','/.well-known/apex-ready',headers={'X-APEX-Ready-Token':'private-test-token'})
|
|
r=c.getresponse();return r.status,r.read()
|
|
finally:c.close()
|
|
with concurrent.futures.ThreadPoolExecutor(max_workers=32) as pool:results=list(pool.map(one,range(32)))
|
|
self.assertEqual(results,[(204,b'')]*32)
|
|
self.assertEqual(self.marker.read_text().splitlines(),['probe'])
|
|
def test_single_flight_shares_success_and_sequential_request_reprobes(self):
|
|
code=f"import pathlib,time;p=pathlib.Path({str(self.marker)!r});f=p.open('a');f.write('probe\\n');f.close();time.sleep(.2)"
|
|
s=self.server(code,timeout=1,slots=1,single_flight=True)
|
|
results=self.overlapping_requests(s)
|
|
self.assertEqual([r for r,_ in results],[(204,'no-store',b'')]*4)
|
|
self.assertEqual(self.marker.read_text().splitlines(),['probe'])
|
|
self.assertEqual(self.request(s)[0],204)
|
|
self.assertEqual(self.marker.read_text().splitlines(),['probe','probe'])
|
|
def test_single_flight_shares_failure_without_caching_it(self):
|
|
code=f"import pathlib,time;p=pathlib.Path({str(self.marker)!r});f=p.open('a');f.write('probe\\n');f.close();time.sleep(.2);raise SystemExit(1)"
|
|
s=self.server(code,timeout=1,slots=4,single_flight=True)
|
|
self.assertEqual([r for r,_ in self.overlapping_requests(s)],[(503,'no-store',b'')]*4)
|
|
self.assertEqual(self.marker.read_text().splitlines(),['probe'])
|
|
s.command=[sys.executable,'-c','pass'];self.assertEqual(self.request(s)[0],204)
|
|
def test_single_flight_timeout_wakes_waiters_and_kills_descendant(self):
|
|
code=f"import subprocess,time,sys;subprocess.Popen([sys.executable,'-c',\"import time,pathlib;time.sleep(.8);pathlib.Path({str(self.marker)!r}).write_text('leaked')\"]);time.sleep(3)"
|
|
s=self.server(code,timeout=.25,slots=1,single_flight=True)
|
|
results=self.overlapping_requests(s)
|
|
self.assertEqual([r for r,_ in results],[(503,'no-store',b'')]*4)
|
|
self.assertTrue(all(.15<elapsed<.7 for _,elapsed in results),results)
|
|
time.sleep(.9);self.assertFalse(self.marker.exists())
|
|
def test_single_flight_shutdown_wakes_waiters_and_rejects_new_requests(self):
|
|
leaked=self.root/'descendant'
|
|
child=f"import time,pathlib;pathlib.Path({str(self.marker)!r}).write_text('started');time.sleep(.8);pathlib.Path({str(leaked)!r}).write_text('leaked')"
|
|
code=f"import subprocess,time,sys;subprocess.Popen([sys.executable,'-c',{child!r}]);time.sleep(3)"
|
|
s=self.server(code,timeout=1.5,slots=1,single_flight=True)
|
|
with concurrent.futures.ThreadPoolExecutor(max_workers=4) as pool:
|
|
futures=[pool.submit(self.request,s) for _ in range(4)]
|
|
for _ in range(100):
|
|
if self.marker.exists():break
|
|
time.sleep(.005)
|
|
self.assertTrue(self.marker.exists());start=time.monotonic();s.server_close()
|
|
self.assertEqual([f.result()[0] for f in futures],[503]*4);self.assertLess(time.monotonic()-start,.7)
|
|
self.assertFalse(s.probe());time.sleep(.9);self.assertFalse(leaked.exists())
|
|
def test_single_flight_late_waiter_uses_remaining_deadline(self):
|
|
code=f"import pathlib,time;p=pathlib.Path({str(self.marker)!r});f=p.open('a');f.write('probe\\n');f.close();time.sleep(3)"
|
|
s=self.server(code,timeout=.4,slots=1,single_flight=True)
|
|
with concurrent.futures.ThreadPoolExecutor() as pool:
|
|
first=pool.submit(self.request,s)
|
|
for _ in range(100):
|
|
if self.marker.exists():break
|
|
time.sleep(.005)
|
|
self.assertTrue(self.marker.exists());time.sleep(.2);start=time.monotonic()
|
|
self.assertEqual(self.request(s)[0],503);self.assertLess(time.monotonic()-start,.3)
|
|
self.assertEqual(first.result()[0],503)
|
|
self.assertEqual(self.marker.read_text().splitlines(),['probe'])
|
|
def test_single_flight_connection_limit_remains_bounded(self):
|
|
s=self.server(slots=1,single_flight=True);connections=[]
|
|
try:
|
|
for _ in range(6):
|
|
sock=socket.create_connection(s.server_address,timeout=2);sock.sendall(b'GET /.well-known/apex-ready HTTP/1.1\r\n');connections.append(sock)
|
|
self.assertEqual(self.request(s),(503,'no-store',b''));self.assertFalse(self.marker.exists())
|
|
finally:
|
|
for sock in connections:sock.close()
|
|
def test_single_flight_still_authenticates_before_probe(self):
|
|
s=self.server(single_flight=True)
|
|
for token,duplicate in [(None,False),('bad',False),('private-test-token',True)]:self.assertEqual(self.request(s,token=token,extra_token=duplicate)[0],403)
|
|
self.assertFalse(self.marker.exists())
|
|
def test_single_flight_requires_explicit_boolean(self):
|
|
for value in [0,1,None,'true']:
|
|
with self.subTest(value=value),self.assertRaises(ValueError):self.server(single_flight=value)
|
|
if __name__=='__main__':unittest.main()
|