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How to use append_cors_headers method in localstack

Best Python code snippet using localstack_python

s3_listener.py

Source:s3_listener.py

...126    BUCKET_CORS.pop(bucket_name, {})127    response = Response()128    response.status_code = 200129    return response130def append_cors_headers(bucket_name, request_method, request_headers, response):131    cors = BUCKET_CORS.get(bucket_name)132    if not cors:133        return134    origin = request_headers.get('Origin', '')135    for rule in cors['CORSConfiguration']['CORSRule']:136        allowed_methods = rule.get('AllowedMethod', [])137        if request_method in allowed_methods:138            allowed_origins = rule.get('AllowedOrigin', [])139            for allowed in allowed_origins:140                if origin in allowed or re.match(allowed.replace('*', '.*'), origin):141                    response.headers['Access-Control-Allow-Origin'] = origin142                    break143def strip_chunk_signatures(data):144    # For clients that use streaming v4 authentication, the request contains chunk signatures145    # in the HTTP body (see example below) which we need to strip as moto cannot handle them146    #147    # 17;chunk-signature=6e162122ec4962bea0b18bc624025e6ae4e9322bdc632762d909e87793ac5921148    # <payload data ...>149    # 0;chunk-signature=927ab45acd82fc90a3c210ca7314d59fedc77ce0c914d79095f8cc9563cf2c70150    data_new = re.sub(r'^[0-9a-fA-F]+;chunk-signature=[0-9a-f]{64}', '', data, flags=re.MULTILINE)151    if data_new != data:152        # trim \r (13) or \n (10)153        for i in range(0, 2):154            if ord(data_new[0]) in (10, 13):155                data_new = data_new[1:]156        for i in range(0, 6):157            if ord(data_new[-1]) in (10, 13):158                data_new = data_new[:-1]159    return data_new160def update_s3(method, path, data, headers, response=None, return_forward_info=False):161    if return_forward_info:162        modified_data = None163        # If this request contains streaming v4 authentication signatures, strip them from the message164        # Related isse: https://github.com/atlassian/localstack/issues/98165        # TODO we should evaluate whether to replace moto s3 with scality/S3:166        # https://github.com/scality/S3/issues/237167        if headers.get('x-amz-content-sha256') == 'STREAMING-AWS4-HMAC-SHA256-PAYLOAD':168            modified_data = strip_chunk_signatures(data)169        # persist this API call to disk170        persistence.record('s3', method, path, data, headers)171        parsed = urlparse.urlparse(path)172        query = parsed.query173        path = parsed.path174        bucket = path.split('/')[1]175        query_map = urlparse.parse_qs(query)176        if method == 'PUT' and (query == 'notification' or 'notification' in query_map):177            tree = ET.fromstring(data)178            for dest in ['Queue', 'Topic', 'CloudFunction']:179                config = tree.find('{%s}%sConfiguration' % (XMLNS_S3, dest))180                if config is not None and len(config):181                    S3_NOTIFICATIONS[bucket] = {182                        'Id': get_xml_text(config, 'Id'),183                        'Event': get_xml_text(config, 'Event', ns=XMLNS_S3),184                        dest: get_xml_text(config, dest, ns=XMLNS_S3),185                    }186        if query == 'cors' or 'cors' in query_map:187            if method == 'GET':188                return get_cors(bucket)189            if method == 'PUT':190                return set_cors(bucket, data)191            if method == 'DELETE':192                return delete_cors(bucket)193        if modified_data:194            return Request(data=modified_data, headers=headers, method=method)195        return True196    # get subscribers and send bucket notifications197    if method in ('PUT', 'DELETE') and '/' in path[1:]:198        parts = path[1:].split('/', 1)199        bucket_name = parts[0]200        object_path = '/%s' % parts[1]201        send_notifications(method, bucket_name, object_path)202    # append CORS headers to response203    if response:204        parsed = urlparse.urlparse(path)205        bucket_name = parsed.path.split('/')[0]...

utils.py

Source:utils.py

...47        or mentor in token["mentorIds"]48    )49def create_json_response(status, data, event, headers={}):50    body = {"data": data}51    append_cors_headers(headers, event)52    append_secure_headers(headers)53    response = {"statusCode": status, "body": json.dumps(body), "headers": headers}54    return response55def append_secure_headers(headers):56    secure = {57        "content-security-policy": "upgrade-insecure-requests;",58        "referrer-policy": "no-referrer-when-downgrade",59        "strict-transport-security": "max-age=31536000",60        "x-content-type-options": "nosniff",61        "x-frame-options": "SAMEORIGIN",62        "x-xss-protection": "1; mode=block",63    }64    for h in secure:65        headers[h] = secure[h]66def append_cors_headers(headers, event):67    origin = environ.get("CORS_ORIGIN", "*")68    # TODO specify allowed list of origins and if event["headers"]["origin"] is one of them then allow it69    # if "origin" in event["headers"] and getenv.array('CORS_ORIGIN').includes(event["headers"]["origin"]):70    #     origin = event["headers"]["origin"]71    headers["Access-Control-Allow-Origin"] = origin72    headers["Access-Control-Allow-Origin"] = "*"73    headers["Access-Control-Allow-Headers"] = "GET,PUT,POST,DELETE,OPTIONS"74    headers[75        "Access-Control-Allow-Methods"76    ] = "Authorization,Origin,Accept,Accept-Language,Content-Language,Content-Type"77def props_to_bool(78    name: str, props: Union[Dict[str, Any], _Environ], dft: bool = False79) -> bool:80    if not (props and name in props):...

predict.py

Source:predict.py

...27MODELS_DIR = "/tmp/models"28classifier_dao = Dao(SHARED, MODELS_DIR)29def make_response(status, body, event):30    headers = {}31    append_cors_headers(headers, event)32    append_secure_headers(headers)33    response = {"statusCode": status, "body": json.dumps(body), "headers": headers}34    return response35def handler(event, context):36    log.debug(json.dumps(event))37    if "queryStringParameters" not in event:38        raise Exception("bad request")39    if (40        "mentor" not in event["queryStringParameters"]41        or "query" not in event["queryStringParameters"]42    ):43        raise Exception("bad request")44    mentor = event["queryStringParameters"]["mentor"]45    question = event["queryStringParameters"]["query"]...

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