def _await_nailgun_server(self, workunit):
nailgun_timeout_seconds = 5
max_socket_connect_attempts = 10
start = time.time()
endpoint = self._get_nailgun_endpoint()
while endpoint is None:
if time.time() - start > nailgun_timeout_seconds:
raise NailgunError('Failed to read ng output after %s seconds' % nailgun_timeout_seconds)
time.sleep(0.1)
endpoint = self._get_nailgun_endpoint()
port = endpoint[1]
nailgun = self._create_ngclient(port, workunit)
self.context.log.debug('Detected ng server up on port %d' % port)
attempt = 0
while attempt < max_socket_connect_attempts:
sock = nailgun.try_connect()
if sock:
sock.close()
self.context.log.debug('Connected to ng server pid: %d @ port: %d' % endpoint)
return nailgun
attempt += 1
self.context.log.debug('Failed to connect on attempt %d' % attempt)
time.sleep(0.1)
raise NailgunError('Failed to connect to ng after %d connect attempts'
% max_socket_connect_attempts)
def _await_nailgun_server(self, workunit):
nailgun_timeout_seconds = 5
max_socket_connect_attempts = 10
nailgun = None
port_parse_start = time.time()
with _safe_open(self._ng_out, 'r') as ng_out:
while not nailgun:
started = ng_out.readline()
if started:
port = self._parse_nailgun_port(started)
with open(self._pidfile, 'a') as pidfile:
pidfile.write(':%d\n' % port)
nailgun = self._create_ngclient(port, workunit)
log.debug('Detected ng server up on port %d' % port)
elif time.time() - port_parse_start > nailgun_timeout_seconds:
raise NailgunError(
'Failed to read ng output after %s seconds' %
nailgun_timeout_seconds)
attempt = 0
while nailgun:
sock = nailgun.try_connect()
if sock:
sock.close()
log.info('Connected to ng server pid: %d @ port: %d' %
self._get_nailgun_endpoint())
return nailgun
elif attempt > max_socket_connect_attempts:
raise NailgunError(
'Failed to connect to ng output after %d connect attempts'
% max_socket_connect_attempts)
attempt += 1
log.debug('Failed to connect on attempt %d' % attempt)
time.sleep(0.1)
def _run_cmd(cmd):
runcmd = cmd + ' && echo "\n${PIPESTATUS[*]}"'
popen = subprocess.Popen(runcmd,
shell=True,
executable='/bin/bash',
bufsize=-1,
close_fds=True,
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT)
(stdout_data, _) = popen.communicate()
stdout_data_lines = [
line for line in stdout_data.strip().split('\n') if line
]
if not stdout_data_lines:
raise NailgunError('No output for command (%s)' % runcmd)
try:
# Get the return codes of each piped cmd.
piped_return_codes = [
int(x) for x in stdout_data_lines[-1].split(' ') if x
]
except ValueError:
raise NailgunError('Failed to parse result (%s) for command (%s)' %
(stdout_data_lines, cmd))
# Drop the echoing of PIPESTATUS, which our caller doesn't care about.
stdout_data_lines = stdout_data_lines[:-1]
failed = any(piped_return_codes)
if failed:
raise NailgunError('Failed to execute cmd: "%s". Exit codes: %s. Output: "%s"' %\
(cmd, piped_return_codes, ''.join(stdout_data_lines)))
return stdout_data_lines
def _parse_nailgun_port(self, line):
match = NailgunTask._PARSE_NG_PORT.match(line)
if not match:
raise NailgunError(
'Failed to determine spawned ng port from response line: %s' %
line)
return int(match.group(1))
