Flask dump request and response example

flask_dump_request_response.py

#!/usr/bin/env python
# coding: utf-8

import os
import sys
import json
import uuid
import tempfile
from flask import Flask, request, Response, g

app = Flask(__name__)
app.debug = True


def save_request(uuid, request):
    req_data = {}
    req_data['uuid'] = uuid
    req_data['endpoint'] = request.endpoint
    req_data['method'] = request.method
    req_data['cookies'] = request.cookies
    req_data['data'] = request.data
    req_data['headers'] = dict(request.headers)
    req_data['headers'].pop('Cookie', None)
    req_data['args'] = request.args
    req_data['form'] = request.form
    req_data['remote_addr'] = request.remote_addr
    files = []
    for name, fs in request.files.items():
        dst = tempfile.NamedTemporaryFile()
        fs.save(dst)
        dst.flush()
        filesize = os.stat(dst.name).st_size
        dst.close()
        files.append({'name': name, 'filename': fs.filename, 'filesize': filesize,
         'mimetype': fs.mimetype, 'mimetype_params': fs.mimetype_params})
    req_data['files'] = files
    return req_data


def save_response(uuid, resp):
    resp_data = {}
    resp_data['uuid'] = uuid
    resp_data['status_code'] = resp.status_code
    resp_data['status'] = resp.status
    resp_data['headers'] = dict(resp.headers)
    resp_data['data'] = resp.response
    return resp_data


@app.before_request
def before_request():
    print(request.method, request.endpoint)


@app.after_request
def after_request(resp):
    resp.headers.add('Access-Control-Allow-Origin', '*')
    resp.headers.add('Access-Control-Allow-Headers', 'Content-Type, X-Token')
    resp.headers.add('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE')
    resp_data = save_response(g.uuid, resp)
    print('Response:: ', json.dumps(resp_data, indent=4))
    return resp


@app.route('/log', methods=['GET', 'POST'])
def log():
    g.uuid = uuid.uuid1().hex
    req_data = save_request(g.uuid, request)
    resp = Response(json.dumps(req_data, indent=4, default=str), mimetype='application/json')
    resp.set_cookie('cookie-name', value='cookie-value')
    return resp


if __name__ == '__main__':
    app.run('0.0.0.0', port=int(sys.argv[1]), debug=True)

Many thanks, bro :)

Hi I get this error

File "C:\Sites\hullo\backend\env\lib\site-packages\flask\app.py", line 1935, in dispatch_request
return self.view_functionsrule.endpoint
File "C:\Sites\hullo\backend\flask_app\routes_epic.py", line 65, in epic_sms_post
req_data = save_request(g.uuid, request)
File "C:\Sites\hullo\backend\flask_app\routes_epic.py", line 25, in save_request
for name, fs in request.files.iteritems():
AttributeError: 'ImmutableMultiDict' object has no attribute 'iteritems'

Thoughts?

found this solution:
in python3 , use dict.items() instead of dict.iteritems()

iteritems() was removed in python3, so you can't use this method anymore.

Hi I get this error

File "C:\Sites\hullo\backend\env\lib\site-packages\flask\app.py", line 1935, in dispatch_request
return self.view_functionsrule.endpoint
File "C:\Sites\hullo\backend\flask_app\routes_epic.py", line 65, in epic_sms_post
req_data = save_request(g.uuid, request)
File "C:\Sites\hullo\backend\flask_app\routes_epic.py", line 25, in save_request
for name, fs in request.files.iteritems():
AttributeError: 'ImmutableMultiDict' object has no attribute 'iteritems'

Thoughts?

The script is 5 years old, flask API may have changed a lot.

found this solution:
in python3 , use dict.items() instead of dict.iteritems()

iteritems() was removed in python3, so you can't use this method anymore.

Great, I'll update it.

also getting byte error. resolved by adding "default=str" to line 57 and 69

print ('Response:: ', json.dumps(resp_data, indent=4, default=str))
Response(json.dumps(req_data, indent=4, default=str), mimetype='application/json')

Very nice!! :)

Updated :)

Hi I get this error, any clues?

POST None
127.0.0.1 - - [18/Oct/2022 00:03:02] "POST /api/v0/registresdisp HTTP/1.1" 500 -
Traceback (most recent call last):
File "/Users/xavier/Documents/Formacio/lamevaapi/env/lib/python3.9/site-packages/flask/ctx.py", line 49, in getattr
return self.dict[name]
KeyError: 'uuid'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/Users/xavier/Documents/Formacio/lamevaapi/env/lib/python3.9/site-packages/flask/app.py", line 2091, in call
return self.wsgi_app(environ, start_response)
File "/Users/xavier/Documents/Formacio/lamevaapi/env/lib/python3.9/site-packages/flask/app.py", line 2076, in wsgi_app
response = self.handle_exception(e)
File "/Users/xavier/Documents/Formacio/lamevaapi/env/lib/python3.9/site-packages/flask/app.py", line 2073, in wsgi_app
response = self.full_dispatch_request()
File "/Users/xavier/Documents/Formacio/lamevaapi/env/lib/python3.9/site-packages/flask/app.py", line 1519, in full_dispatch_request
return self.finalize_request(rv)
File "/Users/xavier/Documents/Formacio/lamevaapi/env/lib/python3.9/site-packages/flask/app.py", line 1540, in finalize_request
response = self.process_response(response)
File "/Users/xavier/Documents/Formacio/lamevaapi/env/lib/python3.9/site-packages/flask/app.py", line 1885, in process_response
response = self.ensure_sync(func)(response)
File "/Users/xavier/Documents/Formacio/lamevaapi/flask_dump_request_response.py", line 60, in after_request
resp_data = save_response(g.uuid, resp)
File "/Users/xavier/Documents/Formacio/lamevaapi/env/lib/python3.9/site-packages/flask/ctx.py", line 51, in getattr
raise AttributeError(name) from None
AttributeError: uuid