Python subprocess.CalledProcessError() Examples

def call(self, cmd, **kwargs):
        print('Running "{}"'.format(cmd), file=sys.stderr)
        expect = kwargs.pop("expect", [dict(return_codes=[os.EX_OK], stdout=None, stderr=None)])
        process = subprocess.Popen(cmd, stdin=kwargs.get("stdin", subprocess.PIPE), stdout=subprocess.PIPE,
                                   stderr=subprocess.PIPE, **kwargs)
        out, err = process.communicate()
        return_code = process.poll()
        out = out.decode(sys.stdin.encoding)
        err = err.decode(sys.stdin.encoding)

        def match(return_code, out, err, expected):
            exit_ok = return_code in expected["return_codes"]
            stdout_ok = re.search(expected.get("stdout") or "", out)
            stderr_ok = re.search(expected.get("stderr") or "", err)
            return exit_ok and stdout_ok and stderr_ok
        if not any(match(return_code, out, err, exp) for exp in expect):
            print(err)
            e = subprocess.CalledProcessError(return_code, cmd, output=out)
            e.stdout, e.stderr = out, err
            raise e
        return self.SubprocessResult(out, err, return_code) 

def run_command(command, args=[], cwd=None, env=None, name='command'):
    def cmd_args_to_str(cmd_args):
        return ' '.join([arg if not ' ' in arg else '"%s"' % arg for arg in cmd_args])

    assert isinstance(command, str) and isinstance(args, list)
    args = [command] + args

    check_call_args = {}
    if cwd is not None:
        check_call_args['cwd'] = cwd
    if env is not None:
        check_call_args['env'] = env

    import subprocess
    try:
        print('Running command \'%s\': %s' % (name, subprocess.list2cmdline(args)))
        subprocess.check_call(args, **check_call_args)
        print('Command \'%s\' completed successfully' % name)
    except subprocess.CalledProcessError as e:
        raise BuildError('\'%s\' exited with error code: %s' % (name, e.returncode)) 

def load_addresses():
    """
    Separate function to avoid announce when loading addresses from keystore.
    """
    global ADDRESSES
    try:
        response = subprocess.check_output(["hmy", "keys", "list"], env=ENVIRONMENT).decode()
    except subprocess.CalledProcessError as err:
        raise RuntimeError(f"Could not list keys.\n"
                           f"\tGot exit code {err.returncode}. Msg: {err.output}") from err

    lines = response.split("\n")
    if "NAME" not in lines[0] or "ADDRESS" not in lines[0]:
        raise RuntimeError(f"Name or Address not found on first line if key list.")

    for line in lines[1:]:
        if not line:
            continue
        try:
            name, address = line.split("\t")
        except ValueError:
            raise RuntimeError(f"Unexpected key list format.")
        ADDRESSES[name.strip()] = address 

def _call_gti(self, command, num_values):
        try:
            response_json = check_output(command, shell=True)
            result_dict = json.loads(response_json[0:len(response_json) - 1])
            responses = result_dict['a']
            return responses

        except CalledProcessError as e:
            self._logger.error("Error calling McAfee GTI client in gti module: " + e.output)
            error_resp = [{self.REP_KEY: self.DEFAULT_REP}] * num_values
            return error_resp

        except ValueError as e:
            self._logger.error("Error reading JSON response in gti module: " + e.message)
            error_resp = [{self.REP_KEY: self.DEFAULT_REP}] * num_values
            return error_resp 

def manage():
    def call(*args, **kwargs):
        ignore_errors = kwargs.pop("ignore_errors", False)
        assert not kwargs
        cmd = [
            sys.executable,
            os.path.join(os.path.dirname(__file__), "testprj", "manage.py"),
        ] + list(args)
        try:
            return subprocess.check_output(cmd, stderr=subprocess.STDOUT)
        except subprocess.CalledProcessError as e:
            if not ignore_errors:
                raise
            return e.output

    return call 

def test_django_traceback(manage):
    with pytest.raises(subprocess.CalledProcessError) as e:
        manage("errcmd")
    assert e.value.output == b"CommandError: Raised error description\n"
    assert e.value.returncode == 1

    with pytest.raises(subprocess.CalledProcessError) as e:
        manage("errcmd", "--traceback")

    e = e.value

    lines = e.output.splitlines()
    assert lines[0] == b"Traceback (most recent call last):"
    for line in lines[1:-1]:
        assert line.startswith(b"  ")
    # Use `.endswith()` because of differences between CPython and pypy
    assert lines[-1].endswith(b"CommandError: Raised error description")
    assert e.returncode == 1 

def _verify_docker_image_size(self, image_name):
    """Verifies size of Docker image.

    Args:
      image_name: name of the Docker image.

    Returns:
      True if image size is withing the limits, False otherwise.
    """
    shell_call(['docker', 'pull', image_name])
    try:
      image_size = subprocess.check_output(
          ['docker', 'inspect', '--format={{.Size}}', image_name]).strip()
      image_size = int(image_size) if PY3 else long(image_size)
    except (ValueError, subprocess.CalledProcessError) as e:
      logging.error('Failed to determine docker image size: %s', e)
      return False
    logging.info('Size of docker image %s is %d', image_name, image_size)
    if image_size > MAX_DOCKER_IMAGE_SIZE:
      logging.error('Image size exceeds limit %d', MAX_DOCKER_IMAGE_SIZE)
    return image_size <= MAX_DOCKER_IMAGE_SIZE 

def run(self):
    """Runs validation of all submissions."""
    cmd = ['gsutil', 'ls', os.path.join(self.source_dir, '**')]
    try:
      files_list = subprocess.check_output(cmd).split('\n')
    except subprocess.CalledProcessError:
      logging.error('Can''t read source directory')
    all_submissions = [
        s for s in files_list
        if s.endswith('.zip') or s.endswith('.tar') or s.endswith('.tar.gz')
    ]
    for submission_path in all_submissions:
      self.validate_and_copy_one_submission(submission_path)
    self.stats.log_stats()
    self.save_id_to_path_mapping()
    if self.containers_file:
      with open(self.containers_file, 'w') as f:
        f.write('\n'.join(sorted(self.list_of_containers))) 

def _verify_docker_image_size(self, image_name):
    """Verifies size of Docker image.

    Args:
      image_name: name of the Docker image.

    Returns:
      True if image size is within the limits, False otherwise.
    """
    shell_call(['docker', 'pull', image_name])
    try:
      image_size = subprocess.check_output(
          ['docker', 'inspect', '--format={{.Size}}', image_name]).strip()
      image_size = int(image_size) if PY3 else long(image_size)
    except (ValueError, subprocess.CalledProcessError) as e:
      logging.error('Failed to determine docker image size: %s', e)
      return False
    logging.info('Size of docker image %s is %d', image_name, image_size)
    if image_size > MAX_DOCKER_IMAGE_SIZE:
      logging.error('Image size exceeds limit %d', MAX_DOCKER_IMAGE_SIZE)
    return image_size <= MAX_DOCKER_IMAGE_SIZE 

def delete_local_docker_cache(docker_tag):
    """
    Delete the local docker cache for the entire docker image chain
    :param docker_tag: Docker tag
    :return: None
    """
    history_cmd = ['docker', 'history', '-q', docker_tag]

    try:
        image_ids_b = subprocess.check_output(history_cmd)
        image_ids_str = image_ids_b.decode('utf-8').strip()
        layer_ids = [id.strip() for id in image_ids_str.split('\n') if id != '<missing>']

        delete_cmd = ['docker', 'image', 'rm', '--force']
        delete_cmd.extend(layer_ids)
        subprocess.check_call(delete_cmd)
    except subprocess.CalledProcessError as error:
        # Could be caused by the image not being present
        logging.debug('Error during local cache deletion %s', error) 

def check_project(project_name):
    if 'token' in if_config_vars and len(if_config_vars['token']) != 0:
        logger.debug(project_name)
        try:
            # check for existing project
            check_url = urlparse.urljoin(if_config_vars['if_url'], '/api/v1/getprojectstatus')
            output_check_project = subprocess.check_output('curl "' + check_url + '?userName=' + if_config_vars['user_name'] + '&token=' + if_config_vars['token'] + '&projectList=%5B%7B%22projectName%22%3A%22' + project_name + '%22%2C%22customerName%22%3A%22' + if_config_vars['user_name'] + '%22%2C%22projectType%22%3A%22CUSTOM%22%7D%5D&tzOffset=-14400000"', shell=True)
            # create project if no existing project
            if project_name not in output_check_project:
                logger.debug('creating project')
                create_url = urlparse.urljoin(if_config_vars['if_url'], '/api/v1/add-custom-project')
                output_create_project = subprocess.check_output('no_proxy= curl -d "userName=' + if_config_vars['user_name'] + '&token=' + if_config_vars['token'] + '&projectName=' + project_name + '&instanceType=PrivateCloud&projectCloudType=PrivateCloud&dataType=' + get_data_type_from_project_type() + '&samplingInterval=' + str(if_config_vars['sampling_interval'] / 60) +  '&samplingIntervalInSeconds=' + str(if_config_vars['sampling_interval']) + '&zone=&email=&access-key=&secrete-key=&insightAgentType=' + get_insight_agent_type_from_project_type() + '" -H "Content-Type: application/x-www-form-urlencoded" -X POST ' + create_url + '?tzOffset=-18000000', shell=True)
            # set project name to proposed name
            if_config_vars['project_name'] = project_name
            # try to add new project to system
            if 'system_name' in if_config_vars and len(if_config_vars['system_name']) != 0:
                system_url = urlparse.urljoin(if_config_vars['if_url'], '/api/v1/projects/update')
                output_update_project = subprocess.check_output('no_proxy= curl -d "userName=' + if_config_vars['user_name'] + '&token=' + if_config_vars['token'] + '&operation=updateprojsettings&projectName=' + project_name + '&systemName=' + if_config_vars['system_name'] + '" -H "Content-Type: application/x-www-form-urlencoded" -X POST ' + system_url + '?tzOffset=-18000000', shell=True)
        except subprocess.CalledProcessError as e:
            logger.error('Unable to create project for ' + project_name + '. Data will be sent to ' + if_config_vars['project_name']) 

def check_project(project_name):
    if 'token' in if_config_vars and len(if_config_vars['token']) != 0:
        logger.debug(project_name)
        try:
            # check for existing project
            check_url = urlparse.urljoin(if_config_vars['if_url'], '/api/v1/getprojectstatus')
            output_check_project = subprocess.check_output('curl "' + check_url + '?userName=' + if_config_vars['user_name'] + '&token=' + if_config_vars['token'] + '&projectList=%5B%7B%22projectName%22%3A%22' + project_name + '%22%2C%22customerName%22%3A%22' + if_config_vars['user_name'] + '%22%2C%22projectType%22%3A%22CUSTOM%22%7D%5D&tzOffset=-14400000"', shell=True)
            # create project if no existing project
            if project_name not in output_check_project:
                logger.debug('creating project')
                create_url = urlparse.urljoin(if_config_vars['if_url'], '/api/v1/add-custom-project')
                output_create_project = subprocess.check_output('no_proxy= curl -d "userName=' + if_config_vars['user_name'] + '&token=' + if_config_vars['token'] + '&projectName=' + project_name + '&instanceType=PrivateCloud&projectCloudType=PrivateCloud&dataType=' + get_data_type_from_project_type() + '&samplingInterval=' + str(if_config_vars['sampling_interval'] / 60) +  '&samplingIntervalInSeconds=' + str(if_config_vars['sampling_interval']) + '&zone=&email=&access-key=&secrete-key=&insightAgentType=' + get_insight_agent_type_from_project_type() + '" -H "Content-Type: application/x-www-form-urlencoded" -X POST ' + create_url + '?tzOffset=-18000000', shell=True)
            # set project name to proposed name
            if_config_vars['project_name'] = project_name
            # try to add new project to system
            if 'system_name' in if_config_vars and len(if_config_vars['system_name']) != 0:
                system_url = urlparse.urljoin(if_config_vars['if_url'], '/api/v1/projects/update')
                output_update_project = subprocess.check_output('no_proxy= curl -d "userName=' + if_config_vars['user_name'] + '&token=' + if_config_vars['token'] + '&operation=updateprojsettings&projectName=' + project_name + '&systemName=' + if_config_vars['system_name'] + '" -H "Content-Type: application/x-www-form-urlencoded" -X POST ' + system_url + '?tzOffset=-18000000', shell=True)
        except subprocess.CalledProcessError as e:
            logger.error('Unable to create project for ' + project_name + '. Data will be sent to ' + if_config_vars['project_name']) 

def check_project(project_name):
    if 'token' in if_config_vars and len(if_config_vars['token']) != 0:
        logger.debug(project_name)
        try:
            # check for existing project
            check_url = urlparse.urljoin(if_config_vars['if_url'], '/api/v1/getprojectstatus')
            output_check_project = subprocess.check_output('curl "' + check_url + '?userName=' + if_config_vars['user_name'] + '&token=' + if_config_vars['token'] + '&projectList=%5B%7B%22projectName%22%3A%22' + project_name + '%22%2C%22customerName%22%3A%22' + if_config_vars['user_name'] + '%22%2C%22projectType%22%3A%22CUSTOM%22%7D%5D&tzOffset=-14400000"', shell=True)
            # create project if no existing project
            if project_name not in output_check_project:
                logger.debug('creating project')
                create_url = urlparse.urljoin(if_config_vars['if_url'], '/api/v1/add-custom-project')
                output_create_project = subprocess.check_output('no_proxy= curl -d "userName=' + if_config_vars['user_name'] + '&token=' + if_config_vars['token'] + '&projectName=' + project_name + '&instanceType=PrivateCloud&projectCloudType=PrivateCloud&dataType=' + get_data_type_from_project_type() + '&samplingInterval=' + str(if_config_vars['sampling_interval'] / 60) +  '&samplingIntervalInSeconds=' + str(if_config_vars['sampling_interval']) + '&zone=&email=&access-key=&secrete-key=&insightAgentType=' + get_insight_agent_type_from_project_type() + '" -H "Content-Type: application/x-www-form-urlencoded" -X POST ' + create_url + '?tzOffset=-18000000', shell=True)
            # set project name to proposed name
            if_config_vars['project_name'] = project_name
            # try to add new project to system
            if 'system_name' in if_config_vars and len(if_config_vars['system_name']) != 0:
                system_url = urlparse.urljoin(if_config_vars['if_url'], '/api/v1/projects/update')
                output_update_project = subprocess.check_output('no_proxy= curl -d "userName=' + if_config_vars['user_name'] + '&token=' + if_config_vars['token'] + '&operation=updateprojsettings&projectName=' + project_name + '&systemName=' + if_config_vars['system_name'] + '" -H "Content-Type: application/x-www-form-urlencoded" -X POST ' + system_url + '?tzOffset=-18000000', shell=True)
        except subprocess.CalledProcessError as e:
            logger.error('Unable to create project for ' + project_name + '. Data will be sent to ' + if_config_vars['project_name']) 

def check_project(project_name):
    if 'token' in if_config_vars and len(if_config_vars['token']) != 0:
        logger.debug(project_name)
        try:
            # check for existing project
            check_url = urlparse.urljoin(if_config_vars['if_url'], '/api/v1/getprojectstatus')
            output_check_project = subprocess.check_output('curl "' + check_url + '?userName=' + if_config_vars['user_name'] + '&token=' + if_config_vars['token'] + '&projectList=%5B%7B%22projectName%22%3A%22' + project_name + '%22%2C%22customerName%22%3A%22' + if_config_vars['user_name'] + '%22%2C%22projectType%22%3A%22CUSTOM%22%7D%5D&tzOffset=-14400000"', shell=True)
            # create project if no existing project
            if project_name not in output_check_project:
                logger.debug('creating project')
                create_url = urlparse.urljoin(if_config_vars['if_url'], '/api/v1/add-custom-project')
                output_create_project = subprocess.check_output('no_proxy= curl -d "userName=' + if_config_vars['user_name'] + '&token=' + if_config_vars['token'] + '&projectName=' + project_name + '&instanceType=PrivateCloud&projectCloudType=PrivateCloud&dataType=' + get_data_type_from_project_type() + '&samplingInterval=' + str(if_config_vars['sampling_interval'] / 60) +  '&samplingIntervalInSeconds=' + str(if_config_vars['sampling_interval']) + '&zone=&email=&access-key=&secrete-key=&insightAgentType=' + get_insight_agent_type_from_project_type() + '" -H "Content-Type: application/x-www-form-urlencoded" -X POST ' + create_url + '?tzOffset=-18000000', shell=True)
            # set project name to proposed name
            if_config_vars['project_name'] = project_name
            # try to add new project to system
            if 'system_name' in if_config_vars and len(if_config_vars['system_name']) != 0:
                system_url = urlparse.urljoin(if_config_vars['if_url'], '/api/v1/projects/update')
                output_update_project = subprocess.check_output('no_proxy= curl -d "userName=' + if_config_vars['user_name'] + '&token=' + if_config_vars['token'] + '&operation=updateprojsettings&projectName=' + project_name + '&systemName=' + if_config_vars['system_name'] + '" -H "Content-Type: application/x-www-form-urlencoded" -X POST ' + system_url + '?tzOffset=-18000000', shell=True)
        except subprocess.CalledProcessError as e:
            logger.error('Unable to create project for ' + project_name + '. Data will be sent to ' + if_config_vars['project_name']) 

def check_project(project_name):
    if 'token' in if_config_vars and len(if_config_vars['token']) != 0:
        logger.debug(project_name)
        try:
            # check for existing project
            check_url = urlparse.urljoin(if_config_vars['if_url'], '/api/v1/getprojectstatus')
            output_check_project = subprocess.check_output('curl "' + check_url + '?userName=' + if_config_vars['user_name'] + '&token=' + if_config_vars['token'] + '&projectList=%5B%7B%22projectName%22%3A%22' + project_name + '%22%2C%22customerName%22%3A%22' + if_config_vars['user_name'] + '%22%2C%22projectType%22%3A%22CUSTOM%22%7D%5D&tzOffset=-14400000"', shell=True)
            # create project if no existing project
            if project_name not in output_check_project:
                logger.debug('creating project')
                create_url = urlparse.urljoin(if_config_vars['if_url'], '/api/v1/add-custom-project')
                output_create_project = subprocess.check_output('no_proxy= curl -d "userName=' + if_config_vars['user_name'] + '&token=' + if_config_vars['token'] + '&projectName=' + project_name + '&instanceType=PrivateCloud&projectCloudType=PrivateCloud&dataType=' + get_data_type_from_project_type() + '&samplingInterval=' + str(if_config_vars['sampling_interval'] / 60) +  '&samplingIntervalInSeconds=' + str(if_config_vars['sampling_interval']) + '&zone=&email=&access-key=&secrete-key=&insightAgentType=' + get_insight_agent_type_from_project_type() + '" -H "Content-Type: application/x-www-form-urlencoded" -X POST ' + create_url + '?tzOffset=-18000000', shell=True)
            # set project name to proposed name
            if_config_vars['project_name'] = project_name
            # try to add new project to system
            if 'system_name' in if_config_vars and len(if_config_vars['system_name']) != 0:
                system_url = urlparse.urljoin(if_config_vars['if_url'], '/api/v1/projects/update')
                output_update_project = subprocess.check_output('no_proxy= curl -d "userName=' + if_config_vars['user_name'] + '&token=' + if_config_vars['token'] + '&operation=updateprojsettings&projectName=' + project_name + '&systemName=' + if_config_vars['system_name'] + '" -H "Content-Type: application/x-www-form-urlencoded" -X POST ' + system_url + '?tzOffset=-18000000', shell=True)
        except subprocess.CalledProcessError as e:
            logger.error('Unable to create project for ' + project_name + '. Data will be sent to ' + if_config_vars['project_name']) 

def check_project(project_name):
    if 'token' in if_config_vars and len(if_config_vars['token']) != 0:
        logger.debug(project_name)
        try:
            # check for existing project
            check_url = urlparse.urljoin(if_config_vars['if_url'], '/api/v1/getprojectstatus')
            output_check_project = subprocess.check_output('curl "' + check_url + '?userName=' + if_config_vars['user_name'] + '&token=' + if_config_vars['token'] + '&projectList=%5B%7B%22projectName%22%3A%22' + project_name + '%22%2C%22customerName%22%3A%22' + if_config_vars['user_name'] + '%22%2C%22projectType%22%3A%22CUSTOM%22%7D%5D&tzOffset=-14400000"', shell=True)
            # create project if no existing project
            if project_name not in output_check_project:
                logger.debug('creating project')
                create_url = urlparse.urljoin(if_config_vars['if_url'], '/api/v1/add-custom-project')
                output_create_project = subprocess.check_output('no_proxy= curl -d "userName=' + if_config_vars['user_name'] + '&token=' + if_config_vars['token'] + '&projectName=' + project_name + '&instanceType=PrivateCloud&projectCloudType=PrivateCloud&dataType=' + get_data_type_from_project_type() + '&samplingInterval=' + str(if_config_vars['sampling_interval'] / 60) +  '&samplingIntervalInSeconds=' + str(if_config_vars['sampling_interval']) + '&zone=&email=&access-key=&secrete-key=&insightAgentType=' + get_insight_agent_type_from_project_type() + '" -H "Content-Type: application/x-www-form-urlencoded" -X POST ' + create_url + '?tzOffset=-18000000', shell=True)
            # set project name to proposed name
            if_config_vars['project_name'] = project_name
            # try to add new project to system
            if 'system_name' in if_config_vars and len(if_config_vars['system_name']) != 0:
                system_url = urlparse.urljoin(if_config_vars['if_url'], '/api/v1/projects/update')
                output_update_project = subprocess.check_output('no_proxy= curl -d "userName=' + if_config_vars['user_name'] + '&token=' + if_config_vars['token'] + '&operation=updateprojsettings&projectName=' + project_name + '&systemName=' + if_config_vars['system_name'] + '" -H "Content-Type: application/x-www-form-urlencoded" -X POST ' + system_url + '?tzOffset=-18000000', shell=True)
        except subprocess.CalledProcessError as e:
            logger.error('Unable to create project for ' + project_name + '. Data will be sent to ' + if_config_vars['project_name']) 

def invalid_virtualenv_reason(venv_path, source_python, destination_python, options):
    try:
        orig_path = get_original_path(venv_path)
    except CalledProcessError:
        return 'could not inspect metadata'
    if not samefile(orig_path, venv_path):
        return 'virtualenv moved %s -> %s' % (timid_relpath(orig_path), timid_relpath(venv_path))
    elif has_system_site_packages(destination_python) != options.system_site_packages:
        return 'system-site-packages changed, to %s' % options.system_site_packages

    if source_python is None:
        return
    destination_version = get_python_version(destination_python)
    source_version = get_python_version(source_python)
    if source_version != destination_version:
        return 'python version changed %s -> %s' % (destination_version, source_version) 

def runTail(logFile):
    cmd = ['tail', '-n', '100', '-f', LOG_FILE]
    while (True):
        try:
            proc = subprocess.Popen(cmd, \
                                    stdout=subprocess.PIPE, \
                                    universal_newlines=True)

            for line in iter(proc.stdout.readline, ''):
                yield line

            proc.stdout.close()
            proc.wait()
        except subprocess.CalledProcessError:
            print('Failed to open the log file, will try again...')
            sleep(1)
            continue

        sleep(2) 

def test_and_load_keystore_directory():
    """
    CRITICAL TEST
    """
    global KEYSTORE_PATH
    try:
        response = subprocess.check_output(["hmy", "keys", "location"], env=ENVIRONMENT).decode().strip()
    except subprocess.CalledProcessError as err:
        log(f"Failed: Could not get keystore path.\n"
            f"\tGot exit code {err.returncode}. Msg: {err.output}")
        return False
    if not os.path.exists(response):
        log(f"Failed: '{response}' is not a valid path")
        return False
    KEYSTORE_PATH = response
    log("Passed", error=False)
    return True 

def get_url():
    # Getting the json with all data regarding the stream
    try:
        response = subprocess.Popen(
            ["livestreamer.exe", "--http-header", "Client-ID=ewvlchtxgqq88ru9gmfp1gmyt6h2b93", 
            channel_url, "-j"], stdout=subprocess.PIPE).communicate()[0]
    except subprocess.CalledProcessError:
        print "An error has occurred while trying to get the stream data. Is the channel online? Is the channel name correct?"
        sys.exit(1)
    except OSError:
        print "An error has occurred while trying to use livestreamer package. Is it installed? Do you have Python in your PATH variable?"

    # Decoding the url to the worst quality of the stream
    try:
        url = json.loads(response)['streams']['audio_only']['url']
    except:
        try:
            url = json.loads(response)['streams']['worst']['url']
        except (ValueError, KeyError):
            print "An error has occurred while trying to get the stream data. Is the channel online? Is the channel name correct?"
            sys.exit(1)

    return url 

def execute_command(command, working_dir=None):
    startupinfo = None
    # hide console window on windows
    if os.name == 'nt':
        startupinfo = subprocess.STARTUPINFO()
        startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW

    output = None
    try:
        output = subprocess.check_output(
            command,
            cwd=working_dir,
            startupinfo=startupinfo
        )
    except (subprocess.CalledProcessError, AttributeError):
        # Git will return an error when the given directory
        # is not a repository, which means that we can ignore this error
        pass
    else:
        output = str(output, encoding="utf-8").strip()

    return output 

def get_git_log(git_dir, file_name=None):
    git_cmd = ["cd {}; git log".format(git_dir)]
    if file_name:
        git_cmd.append("--follow {}".format(file_name))
    git_cmd.append("| head")
    git_cmd = " ".join(git_cmd)

    # Silence stderr
    try:
        with open(os.devnull, 'w') as DEVNULL:
            file_log = util.check_output(git_cmd, stderr=DEVNULL)
    except subprocess.CalledProcessError:
        # Fail safe in git command returns non-zero value
        logger = logging.getLogger(__name__)
        logger.error("Unrecognized command: {} "
                "\nReturning empty git log.".format(git_cmd))
        file_log = ""

    return file_log 

def checkWebkitToPDF():
    try:
        subprocess.check_call("webkitToPDF", stderr=subprocess.PIPE, shell=True)
        return True
    except subprocess.CalledProcessError:
        return False 

def checkRSVGConvert():
    try:
        subprocess.check_call("rsvg-convert -v", stdout=subprocess.PIPE, shell=True)
        return True
    except subprocess.CalledProcessError:
        return False 

def checkInkscape():
    try:
        subprocess.check_call("inkscape --version", stdout=subprocess.PIPE, shell=True)
        return True
    except subprocess.CalledProcessError:
        return False 

def _convertSVG_webkitToPDF(inpath, outpath, outformat):
    if outformat.lower() != "pdf":
        return None

    try:
        cmd = "webkitToPDF {} {}".format(inpath, outpath)
        subprocess.check_call(cmd, shell=True)#, stderr=subprocess.PIPE)
    except subprocess.CalledProcessError:
        return None

    return open(outpath, "rb").read() 

def _convertSVG_inkscape(inpath, outpath, outformat):
    options = ""
    outformat = outformat.lower()
    if outformat == "png":
        options = "--export-dpi 150 --export-background white"

    try:
        subprocess.check_call("inkscape {} {} --export-{}={}".format(options, inpath, outformat, outpath), 
            shell=True)
    except subprocess.CalledProcessError as e:
        print("EXPORT ERROR:", str(e))

    return open(outpath, "rb").read() 

def remove_kafka_topic(cls,zk,topic,logger):
        rm_kafka_topic = "kafka-topics --delete --zookeeper {0} --topic {1}".format(zk,topic)
        try:
            logger.info("SPOT.Utils: Executing: {0}".format(rm_kafka_topic))
            subprocess.call(rm_kafka_topic,shell=True)

        except subprocess.CalledProcessError as e:
            logger.error("SPOT.Utils: There was an error executing: {0}".format(e.cmd))
            sys.exit(1) 

def execute_cmd(cls,command,logger):

        try:
            logger.info("SPOT.Utils: Executing: {0}".format(command))
            subprocess.call(command,shell=True)

        except subprocess.CalledProcessError as e:
            logger.error("SPOT.Utils: There was an error executing: {0}".format(e.cmd))
            sys.exit(1) 

def execute_cmd(cls,command,logger):

        try:
            logger.info("SPOT.Utils: Executing: {0}".format(command))
            subprocess.call(command,shell=True)

        except subprocess.CalledProcessError as e:
            logger.error("SPOT.Utils: There was an error executing: {0}".format(e.cmd))
            sys.exit(1)