Accessing rabbitmq server path when using docker-compose

[KajetanPrystasz]

What action do you want to perform

I'm currently running rabbitMQ from docker-compose. To access the server directory I've created a docker volume to make it accessible from the host machine. When running the test I'm receiving an error.

Chown didn't fix the issue. After chmod -R 777 I can execute, read, write any files with my user. Tried os.mkdir() in the directory during the tests and it also works properly.

What are the results

test_bar_event_producer.py::TestBarEventProducer::test_emit ERROR        [100%]
test setup failed
request = <SubRequest 'rabbitmq' for <Function test_emit>>

    @pytest.fixture
    def rabbitmq_factory(request):
        """
        Client fixture for RabbitMQ.
    
        #. Get module and config.
        #. Connect to RabbitMQ using the parameters from config.
    
        :param TCPExecutor rabbitmq_proc: tcp executor
        :param FixtureRequest request: fixture request object
        :rtype: rabbitpy.adapters.blocking_connection.BlockingConnection
        :returns: instance of :class:`BlockingConnection`
        """
        # load required process fixture
>       process = request.getfixturevalue(process_fixture_name)

../../../../../../venv38/lib/python3.8/site-packages/pytest_rabbitmq/factories/client.py:102: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
../../../../../../venv38/lib/python3.8/site-packages/pytest_rabbitmq/factories/process.py:112: in rabbitmq_proc_fixture
    rabbit_executor.start()
../../../../../../venv38/lib/python3.8/site-packages/mirakuru/base.py:523: in start
    super().start()
../../../../../../venv38/lib/python3.8/site-packages/mirakuru/base.py:263: in start
    self.process = subprocess.Popen(command, **self._popen_kwargs)
/usr/lib/python3.8/subprocess.py:858: in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = <subprocess.Popen object at 0x7efe27ff8310>
args = ['/home/kprystasz/rabbitmq'], executable = b'/home/kprystasz/rabbitmq'
preexec_fn = <built-in function setsid>, close_fds = True, pass_fds = ()
cwd = None
env = {'BAMF_DESKTOP_FILE_HINT': '/var/lib/snapd/desktop/applications/pycharm-professional_pycharm-professional.desktop', 'C...ADDRESS': 'unix:path=/run/user/1001/bus', 'DB_AITBARS': 'XXXX://XXXX@mysqldb-bars:3307/ait', ...}
startupinfo = None, creationflags = 0, shell = False, p2cread = 11
p2cwrite = 12, c2pread = 13, c2pwrite = 14, 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]
        elif isinstance(args, os.PathLike):
            if shell:
                raise TypeError('path-like args is not allowed when '
                                'shell is true')
            args = [args]
        else:
            args = list(args)
    
        if shell:
            # On Android the default shell is at '/system/bin/sh'.
            unix_shell = ('/system/bin/sh' if
                      hasattr(sys, 'getandroidapilevel') else '/bin/sh')
            args = [unix_shell, "-c"] + args
            if executable:
                args[0] = executable
    
        if executable is None:
            executable = args[0]
    
        sys.audit("subprocess.Popen", executable, args, cwd, env)
    
        if (_USE_POSIX_SPAWN
                and os.path.dirname(executable)
                and preexec_fn is None
                and not close_fds
                and not pass_fds
                and cwd is None
                and (p2cread == -1 or p2cread > 2)
                and (c2pwrite == -1 or c2pwrite > 2)
                and (errwrite == -1 or errwrite > 2)
                and not start_new_session):
            self._posix_spawn(args, executable, env, restore_signals,
                              p2cread, p2cwrite,
                              c2pread, c2pwrite,
                              errread, errwrite)
            return
    
        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._close_pipe_fds(p2cread, p2cwrite,
                                 c2pread, c2pwrite,
                                 errread, errwrite)
    
            # 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)
>               raise child_exception_type(errno_num, err_msg, err_filename)
E               PermissionError: [Errno 13] Permission denied: '/home/kprystasz/rabbitmq'

What are the expected results

[fizyk]

@KajetanPrystasz you're running rabbitmq on a docker instance, and want to connect it within your tests? Do I understand you correctly?

The pytest-rabbitmq functionality is to start the server on the same machine you're running tests on.

If I understood correctly what you're trying to achieve, that's something that would have to be implemented, like here https://github.com/ClearcodeHQ/pytest-redis#connecting-to-already-existing-redis-database

[KajetanPrystasz]

@fizyk indeed, that's the functionality I'm looking for. Are you planning on creating it?
Using Docker to spin up a rabbitmq server is currently the suggested way of running it. I believe that this feature would be beneficial for the project.

[fizyk]

@KajetanPrystasz plan was there if it'd be needed. However, time is not something that would allow me to do it soon.

I'll review and accept PR however. If someone would want to develop it, the examples are there in pytest-redis or pytest-postgresql