def it_logs_continuously_when_run_interactively(self, in_example_dir):
check_call(('pgctl', 'start'))
# this pty simulates running in a terminal
read, write = os.openpty()
pty.normalize_newlines(read)
p = Popen(('pgctl', 'log'), stdout=write, stderr=write)
os.close(write)
import fcntl
fl = fcntl.fcntl(read, fcntl.F_GETFL)
fcntl.fcntl(read, fcntl.F_SETFL, fl | os.O_NONBLOCK)
assert p.poll() is None # it's still running
# needs to loop for several seconds because the default event loop
# in tail-f is one second.
# TODO: buf is a list, use wait_for() to append to it
limit = 3.0
wait = .1
buf = b''
while True:
try:
block = os.read(read, 1024)
print('BLOCK:', block)
except OSError as error:
print('ERROR:', error)
if error.errno == 11: # other end didn't write yet
if limit > 0:
import time
time.sleep(wait)
limit -= wait
continue
else:
break
else:
raise
buf += block
from testfixtures import StringComparison as S
buf = norm.pgctl(buf.decode('UTF-8'))
print('NORMED:')
print(buf)
assert buf == S('''(?s)\
==> playground/ohhi/logs/current <==
{TIMESTAMP} [oe].*
==> playground/sweet/logs/current <==
{TIMESTAMP} sweet
{TIMESTAMP} sweet_error
==> playground/ohhi/logs/current <==
.*{TIMESTAMP} .*$''')
assert p.poll() is None # it's still running
p.terminate()
assert p.wait() == -15
def it_logs_continuously_when_run_interactively(self, in_example_dir):
check_call(('pgctl', 'start'))
# this pty simulates running in a terminal
read, write = os.openpty()
pty.normalize_newlines(read)
p = Popen(('pgctl', 'log'), stdout=write, stderr=write)
os.close(write)
import fcntl
fl = fcntl.fcntl(read, fcntl.F_GETFL)
fcntl.fcntl(read, fcntl.F_SETFL, fl | os.O_NONBLOCK)
assert p.poll() is None # it's still running
# needs to loop for several seconds because the default event loop
# in tail-f is one second.
# TODO: buf is a list, use wait_for() to append to it
limit = 3.0
wait = .1
buf = b''
while True:
try:
block = os.read(read, 1024)
print('BLOCK:', block)
except OSError as error:
print('ERROR:', error)
if error.errno == 11: # other end didn't write yet
if limit > 0:
import time
time.sleep(wait)
limit -= wait
continue
else:
break
else:
raise
buf += block
from testfixtures import StringComparison as S
buf = norm.pgctl(buf.decode('UTF-8'))
print('NORMED:')
print(buf)
assert buf == S('''(?s)\
==> playground/ohhi/log <==
{TIMESTAMP} [oe].*
==> playground/sweet/log <==
{TIMESTAMP} sweet
{TIMESTAMP} sweet_error
==> playground/ohhi/log <==
.*{TIMESTAMP} .*$''')
assert p.poll() is None # it's still running
p.terminate()
assert p.wait() == -15
def it_disables_polling():
stderr = open('stderr', 'w')
proc = Popen(('pgctl', 'debug', 'unreliable'), stdin=open(os.devnull), stdout=PIPE, stderr=stderr)
def check_file_contents():
expected = '''\
pgctl-poll-ready: disabled during debug -- quitting
'''
with open('stderr') as fd:
actual = fd.read()
return expected == actual
wait_for(check_file_contents)
proc.terminate()
stderr.close()
def it_stays_locked_for_the_lifetime_of_subprocesses(self, tmpfile):
from pgctl.subprocess import Popen
with flock(tmpfile):
p = Popen(('sleep', '99999'))
assert p.poll() is None
assert_locked(tmpfile)
assert_locked(tmpfile)
p.terminate()
assert p.wait() == -15
with flock(tmpfile):
print('oh hi there!')
def it_stays_locked_for_the_lifetime_of_subprocesses(self, tmpfile):
from pgctl.subprocess import Popen
with flock(tmpfile):
p = Popen(('sleep', '99999'))
assert p.poll() is None
assert_locked(tmpfile)
assert_locked(tmpfile)
p.terminate()
assert p.wait() == -15
with flock(tmpfile):
print('oh hi there!')
def it_disables_polling():
stderr = open('stderr', 'w')
proc = Popen(('pgctl', 'debug', 'unreliable'), stdin=open(os.devnull), stdout=PIPE, stderr=stderr)
def check_file_contents():
expected = '''\
[pgctl] Stopping: unreliable
[pgctl] Stopped: unreliable
pgctl-poll-ready: disabled during debug -- quitting
'''
with open('stderr') as fd:
actual = fd.read()
return expected == actual
wait_for(check_file_contents)
proc.terminate()
stderr.close()
