lightning-integration
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Launching with lightningd: FileNotFoundError: No such file or directory: 'bin/lightningd': 'bin/lightningd'
As per readme, I put the lightningd
binary (from release v0.7.0) into /bin
and ran py.test -v test.py
, but the tests fail with
FileNotFoundError: [Errno 2] No such file or directory: 'bin/lightningd': 'bin/lightningd'
The path should be bin/
not /bin/
:-)
There was a typo in my comment, I meant the bin
which is inside the lightning-integration
directory. I put the lightningd
binary there and get the error above. It works with the lnd
binary which is in the same directory...
Is there more to this error message? It'd be good to know where this is being raised.
Sure. I modified test.py
in two ways: changed impls
to [LightningNode]
and commented all tests except for the first one (test_start
). Then I run py.test -v test.py
and get:
=========================================================================================== test session starts ============================================================================================
platform linux -- Python 3.6.7, pytest-4.0.2, py-1.8.0, pluggy-0.12.0 -- /usr/bin/python3
cachedir: .pytest_cache
rootdir: /home/sergei/Documents/vienna/lightning-integration, inifile: pytest.ini
plugins: rerunfailures-5.0, timeout-1.3.3, json-0.4.0, xdist-1.25.0, forked-1.0.2
collected 1 item
test.py::test_start[LightningNode] FAILED [100%]
test.py::test_start[LightningNode] ERROR [100%]
================================================================================================== ERRORS ==================================================================================================
______________________________________________________________________________ ERROR at teardown of test_start[LightningNode] ______________________________________________________________________________
tp = <class 'AttributeError'>, value = None, tb = None
def reraise(tp, value, tb=None):
try:
if value is None:
value = tp()
if value.__traceback__ is not tb:
raise value.with_traceback(tb)
> raise value
../../../.local/lib/python3.6/site-packages/six.py:693:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
../../../.local/lib/python3.6/site-packages/six.py:693: in reraise
raise value
../../../.local/lib/python3.6/site-packages/six.py:693: in reraise
raise value
fixtures.py:142: in node_factory
node_factory.killall()
fixtures.py:50: in killall
n.daemon.stop()
lightningd.py:53: in stop
TailableProc.stop(self)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
self = <lightningd.LightningD object at 0x7fa5ab727a90>
def stop(self):
> self.proc.terminate()
E AttributeError: 'NoneType' object has no attribute 'terminate'
utils.py:74: AttributeError
------------------------------------------------------------------------------------------ Captured stdout setup -------------------------------------------------------------------------------------------
Running tests in /tmp/ltests-9mdqre5n
================================================================================================= FAILURES =================================================================================================
________________________________________________________________________________________ test_start[LightningNode] _________________________________________________________________________________________
bitcoind = <btcproxy.ProxiedBitcoinD object at 0x7fa5a8352048>, node_factory = <fixtures.NodeFactory object at 0x7fa5a7ae7c18>, impl = <class 'lightningd.LightningNode'>
@pytest.mark.parametrize("impl", impls, ids=idfn)
def test_start(bitcoind, node_factory, impl):
> node = node_factory.get_node(implementation=impl)
test.py:85:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
fixtures.py:45: in get_node
node.daemon.start()
lightningd.py:47: in start
TailableProc.start(self)
utils.py:62: in start
self.proc = subprocess.Popen(self.cmd_line, stdout=subprocess.PIPE)
/usr/lib/python3.6/subprocess.py:709: in __init__
restore_signals, start_new_session)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
self = <subprocess.Popen object at 0x7fa5a7af5be0>
args = ['bin/lightningd', '--bitcoin-datadir=/tmp/ltests-9mdqre5n/test_start_1/bitcoind', '--lightning-dir=/tmp/lightning-y1e..._start[LightningNode]/node-1/', '--addr=127.0.0.1:43025', '--dev-broadcast-interval=500', '--dev-bitcoind-poll=1', ...]
executable = b'bin/lightningd', preexec_fn = None, close_fds = True, pass_fds = (), cwd = None, env = None, startupinfo = None, creationflags = 0, shell = False, p2cread = -1, p2cwrite = -1, c2pread = 11
c2pwrite = 12, errread = -1, errwrite = -1, restore_signals = True, start_new_session = False
def _execute_child(self, args, executable, preexec_fn, close_fds,
pass_fds, cwd, env,
startupinfo, creationflags, shell,
p2cread, p2cwrite,
c2pread, c2pwrite,
errread, errwrite,
restore_signals, start_new_session):
"""Execute program (POSIX version)"""
if isinstance(args, (str, bytes)):
args = [args]
else:
args = list(args)
if shell:
args = ["/bin/sh", "-c"] + args
if executable:
args[0] = executable
if executable is None:
executable = args[0]
orig_executable = executable
# For transferring possible exec failure from child to parent.
# Data format: "exception name:hex errno:description"
# Pickle is not used; it is complex and involves memory allocation.
errpipe_read, errpipe_write = os.pipe()
# errpipe_write must not be in the standard io 0, 1, or 2 fd range.
low_fds_to_close = []
while errpipe_write < 3:
low_fds_to_close.append(errpipe_write)
errpipe_write = os.dup(errpipe_write)
for low_fd in low_fds_to_close:
os.close(low_fd)
try:
try:
# We must avoid complex work that could involve
# malloc or free in the child process to avoid
# potential deadlocks, thus we do all this here.
# and pass it to fork_exec()
if env is not None:
env_list = []
for k, v in env.items():
k = os.fsencode(k)
if b'=' in k:
raise ValueError("illegal environment variable name")
env_list.append(k + b'=' + os.fsencode(v))
else:
env_list = None # Use execv instead of execve.
executable = os.fsencode(executable)
if os.path.dirname(executable):
executable_list = (executable,)
else:
# This matches the behavior of os._execvpe().
executable_list = tuple(
os.path.join(os.fsencode(dir), executable)
for dir in os.get_exec_path(env))
fds_to_keep = set(pass_fds)
fds_to_keep.add(errpipe_write)
self.pid = _posixsubprocess.fork_exec(
args, executable_list,
close_fds, tuple(sorted(map(int, fds_to_keep))),
cwd, env_list,
p2cread, p2cwrite, c2pread, c2pwrite,
errread, errwrite,
errpipe_read, errpipe_write,
restore_signals, start_new_session, preexec_fn)
self._child_created = True
finally:
# be sure the FD is closed no matter what
os.close(errpipe_write)
# self._devnull is not always defined.
devnull_fd = getattr(self, '_devnull', None)
if p2cread != -1 and p2cwrite != -1 and p2cread != devnull_fd:
os.close(p2cread)
if c2pwrite != -1 and c2pread != -1 and c2pwrite != devnull_fd:
os.close(c2pwrite)
if errwrite != -1 and errread != -1 and errwrite != devnull_fd:
os.close(errwrite)
if devnull_fd is not None:
os.close(devnull_fd)
# Prevent a double close of these fds from __init__ on error.
self._closed_child_pipe_fds = True
# Wait for exec to fail or succeed; possibly raising an
# exception (limited in size)
errpipe_data = bytearray()
while True:
part = os.read(errpipe_read, 50000)
errpipe_data += part
if not part or len(errpipe_data) > 50000:
break
finally:
# be sure the FD is closed no matter what
os.close(errpipe_read)
if errpipe_data:
try:
pid, sts = os.waitpid(self.pid, 0)
if pid == self.pid:
self._handle_exitstatus(sts)
else:
self.returncode = sys.maxsize
except ChildProcessError:
pass
try:
exception_name, hex_errno, err_msg = (
errpipe_data.split(b':', 2))
# The encoding here should match the encoding
# written in by the subprocess implementations
# like _posixsubprocess
err_msg = err_msg.decode()
except ValueError:
exception_name = b'SubprocessError'
hex_errno = b'0'
err_msg = 'Bad exception data from child: {!r}'.format(
bytes(errpipe_data))
child_exception_type = getattr(
builtins, exception_name.decode('ascii'),
SubprocessError)
if issubclass(child_exception_type, OSError) and hex_errno:
errno_num = int(hex_errno, 16)
child_exec_never_called = (err_msg == "noexec")
if child_exec_never_called:
err_msg = ""
# The error must be from chdir(cwd).
err_filename = cwd
else:
err_filename = orig_executable
if errno_num != 0:
err_msg = os.strerror(errno_num)
if errno_num == errno.ENOENT:
err_msg += ': ' + repr(err_filename)
> raise child_exception_type(errno_num, err_msg, err_filename)
E FileNotFoundError: [Errno 2] No such file or directory: 'bin/lightningd': 'bin/lightningd'
/usr/lib/python3.6/subprocess.py:1344: FileNotFoundError
------------------------------------------------------------------------------------------ Captured stdout setup -------------------------------------------------------------------------------------------
Running tests in /tmp/ltests-9mdqre5n
==================================================================================== 1 failed, 1 error in 2.07 seconds =====================================================================================
And ls bin
gives me, as expected, eclair.jar lightningd lnd
(I'm trying to experiment with the three implementations).
lightningd
is just one of the executables that should be in the bin/
directory.
Mine looks like this:
$ tree bin/
bin
├── eclair.jar
├── lightning_channeld
├── lightning_closingd
├── lightning_connectd
├── lightningd
├── lightning_gossipd
├── lightning_hsmd
├── lightning_onchaind
├── lightning_openingd
├── lncli
└── lnd
0 directories, 11 files