How to use canonicalize_headers method in localstack

Best Python code snippet using localstack_python

canonicalization.py

Source:canonicalization.py

...37class Simple:38    """Class that represents the "simple" canonicalization algorithm."""39    name = b"simple"40    @staticmethod41    def canonicalize_headers(headers):42        # No changes to headers.43        return headers44    @staticmethod45    def canonicalize_body(body):46        # Ignore all empty lines at the end of the message body.47        return strip_trailing_lines(body)48class Relaxed:49    """Class that represents the "relaxed" canonicalization algorithm."""50    name = b"relaxed"51    @staticmethod52    def canonicalize_headers(headers):53        # Convert all header field names to lowercase.54        # Unfold all header lines.55        # Compress WSP to single space.56        # Remove all WSP at the start or end of the field value (strip).57        return [58            (x[0].lower().rstrip(),59             compress_whitespace(unfold_header_value(x[1])).strip() + b"\r\n")60            for x in headers]61    @staticmethod62    def canonicalize_body(body):63        # Remove all trailing WSP at end of lines.64        # Compress non-line-ending WSP to single space.65        # Ignore all empty lines at the end of the message body.66        return strip_trailing_lines(67            compress_whitespace(strip_trailing_whitespace(body)))68class CanonicalizationPolicy:69    def __init__(self, header_algorithm, body_algorithm):70        self.header_algorithm = header_algorithm71        self.body_algorithm = body_algorithm72    @classmethod73    def from_c_value(cls, c):74        """Construct the canonicalization policy described by a c= value.75        May raise an C{InvalidCanonicalizationPolicyError} if the given76        value is invalid77        @param c: c= value from a DKIM-Signature header field78        @return: a C{CanonicalizationPolicy}79        """80        if c is None:81            c = b'simple/simple'82        m = c.split(b'/')83        if len(m) not in (1, 2):84            raise InvalidCanonicalizationPolicyError(c)85        if len(m) == 1:86            m.append(b'simple')87        can_headers, can_body = m88        try:89            header_algorithm = ALGORITHMS[can_headers]90            body_algorithm = ALGORITHMS[can_body]91        except KeyError as e:92            raise InvalidCanonicalizationPolicyError(e.args[0])93        return cls(header_algorithm, body_algorithm)94    def to_c_value(self):95        return b'/'.join(96            (self.header_algorithm.name, self.body_algorithm.name))97    def canonicalize_headers(self, headers):98        return self.header_algorithm.canonicalize_headers(headers)99    def canonicalize_body(self, body):100        return self.body_algorithm.canonicalize_body(body)...

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