Serialize Django>=2.2 HttpRequest

serialize_django_request.py

"""
Sometimes you need to pass forward HttpRequest, which is not directly serializable.

serialize_django_request() takes Django HttpRequest as an argument, extracts 
HttpRequest.headers (available since Django 2.2), HttpRequest.body and most interesting
values out from HttpRequest.META and returns them in a dict which is json, msgpack etc.
serializable.
"""

from django.http.request import HttpRequest

META_STARTSWITH = ('SERVER', 'REMOTE')  # REMOTE_ADDR etc.
META_EXACT = ('QUERY_STRING', 'REQUEST_METHOD', 'SCRIPT_NAME', 'PATH_INFO')


def serialize_django_request(request):
    request_meta = {}
    mkeys = list(request.META.keys())
    mkeys.sort()
    for k in mkeys:
        if k.startswith(META_STARTSWITH) or k in META_EXACT:
            request_meta[k] = request.META[k]
    request_meta['path'] = request.META['SCRIPT_NAME'] + request.META['PATH_INFO']

    return {
        'request.headers': dict(request.headers),
        'request.META': request_meta,
        'request.body': request.body,
        'request.GET': dict(request.GET),
        'request.POST': dict(request.POST),        
    }