KaneAI - World’s First E2E Software Testing Agent.Book a Demo Join TestMu Conference

How to use _iter_multipart_parts method in localstack

Best Python code snippet using localstack_python

multipart_content.py

Source:multipart_content.py

1import cgi2import email.parser3from localstack.utils.common import to_bytes4def _iter_multipart_parts(some_bytes, boundary):5    """ Generate a stream of dicts and bytes for each message part.6        Content-Disposition is used as a header for a multipart body:7        https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Disposition8    """9    try:10        parse_data = email.parser.BytesHeaderParser().parsebytes11    except AttributeError:12        # Fall back in case of Python 2.x13        parse_data = email.parser.HeaderParser().parsestr14    while True:15        try:16            part, some_bytes = some_bytes.split(boundary, 1)17        except ValueError:18            # Ran off the end, stop.19            break20        if b'\r\n\r\n' not in part:21            # Real parts have headers and a value separated by '\r\n'.22            continue23        part_head, _ = part.split(b'\r\n\r\n', 1)24        head_parsed = parse_data(part_head.lstrip(b'\r\n'))25        if 'Content-Disposition' in head_parsed:26            _, params = cgi.parse_header(head_parsed['Content-Disposition'])27            yield params, part28def expand_multipart_filename(data, headers):29    """ Replace instance of '${filename}' in key with given file name.30        Data is given as multipart form submission bytes, and file name is31        replace according to Amazon S3 documentation for Post uploads:32        http://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectPOST.html33    """34    _, params = cgi.parse_header(headers.get('Content-Type', ''))35    if 'boundary' not in params:36        return data37    boundary = params['boundary'].encode('ascii')38    data_bytes = to_bytes(data)39    filename = None40    for (disposition, _) in _iter_multipart_parts(data_bytes, boundary):41        if disposition.get('name') == 'file' and 'filename' in disposition:42            filename = disposition['filename']43            break44    if filename is None:45        # Found nothing, return unaltered46        return data47    for (disposition, part) in _iter_multipart_parts(data_bytes, boundary):48        if disposition.get('name') == 'key' and b'${filename}' in part:49            search = boundary + part50            replace = boundary + part.replace(b'${filename}', filename.encode('utf8'))51            if search in data_bytes:52                return data_bytes.replace(search, replace)53    return data54def find_multipart_redirect_url(data, headers):55    """ Return object key and redirect URL if they can be found.56        Data is given as multipart form submission bytes, and redirect is found57        in the success_action_redirect field according to Amazon S358        documentation for Post uploads:59        http://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectPOST.html60    """61    _, params = cgi.parse_header(headers.get('Content-Type', ''))62    key, redirect_url = None, None63    if 'boundary' not in params:64        return key, redirect_url65    boundary = params['boundary'].encode('ascii')66    data_bytes = to_bytes(data)67    for (disposition, part) in _iter_multipart_parts(data_bytes, boundary):68        if disposition.get('name') == 'key':69            _, value = part.split(b'\r\n\r\n', 1)70            key = value.rstrip(b'\r\n--').decode('utf8')71    if key:72        for (disposition, part) in _iter_multipart_parts(data_bytes, boundary):73            if disposition.get('name') == 'success_action_redirect':74                _, value = part.split(b'\r\n\r\n', 1)75                redirect_url = value.rstrip(b'\r\n--').decode('utf8')...

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.