Module aws_format 

AWS-specific formatting.

Any creation of strings goes here.

Functions

authorization_header_string

Generate the AWS authorization header.

canonical_query_string

Generate a canonical query string from the query pairs in the given URL.

canonical_request_string

Generate a canonical request. Assumes headers are already sorted and aws canonical.

canonical_uri_string

Generate a canonical URI string from the given URL. This is used in the AWS canonical request. It is always the path of the URL with percent encoding applied.

credential_scope_string

Generate an AWS scope string. This is used in the AWS authorization header. It is always YYYYMMDD’T’HHMMSS’Z’/region/service/aws4_request.

get_keys

Get the keys from a list of key-value pairs. Allocates.

query_params_string

Get the query params string. It is always ?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=credential&X-Amz-Date=long_date&X-Amz-Expires=expires&X-Amz-SignedHeaders=signed_headers. The credential is always access_key/credential_scope_string(datetime, region, service) with percent encoding. The datetime is always to_long_datetime(datetime).

security_token_string

Get the security token string. It is always &X-Amz-Security-Token=token with percent encoding.

string_to_sign

Generate the AWS string to sign. This is used in the AWS authorization header.

to_long_datetime

Convert a time::OffsetDateTime to a long date string. This is used in the AWS credential scope. It is always UTC, YYYYMMDD’T’HHMMSS’Z’, sortable and lexicographically comparable.

to_short_datetime

Convert a time::OffsetDateTime to a short date string. This is used in the AWS credential scope. It is always UTC, YYYYMMDD, sortable and lexicographically comparable.

uri_encode

Encode a URI following the specific requirements of the AWS service.