conditional_http_tween() - Code Metrics - Inspection of "Blacklist uitlezen voor conditional tween #34" - OnroerendErfgoed/oe_utils - Measure and Improve Code Quality continuously with Scrutinizer

Completed

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by Bart

created 2017-04-10 09:11 UTC

conditional_http_tween() C

↳ Parent: conditional_http_tween_factory()

Complexity

Conditions

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	1

Metric	Value
cc	7
c	1
b	0
f	1
dl	0
loc	21
rs	6.4705

# -*- coding: utf-8 -*-
from collections import Sequence


def conditional_http_tween_factory(handler, registry):
    """
    Tween that adds ETag headers and tells Pyramid to enable 
    conditional responses where appropriate.
    """
    settings = registry.settings if hasattr(registry, 'settings') else {}
    not_cacheble_list = []
    if 'not.cachable.list' in settings:
        not_cacheble_list = settings.get('not.cachable.list').split()

    def conditional_http_tween(request):
        response = handler(request)

        if request.path not in not_cacheble_list:

            # If the Last-Modified header has been set, we want to enable the
            # conditional response processing.
            if response.last_modified is not None:
                response.conditional_response = True

            # We want to only enable the conditional machinery if either we
            # were given an explicit ETag header by the view or we have a
            # buffered response and can generate the ETag header ourself.
            if response.etag is not None:
                response.conditional_response = True
            elif (isinstance(response.app_iter, Sequence) and
                          len(response.app_iter) == 1) and response.body is not None:
                response.conditional_response = True
                response.md5_etag()

        return response

    return conditional_http_tween


1			# -- coding: utf-8 --
2			from collections import Sequence
3
4
5			def conditional_http_tween_factory(handler, registry):
6			"""
7			Tween that adds ETag headers and tells Pyramid to enable
8			conditional responses where appropriate.
9			"""
10			settings = registry.settings if hasattr(registry, 'settings') else {}
11			not_cacheble_list = []
12			if 'not.cachable.list' in settings:
13			not_cacheble_list = settings.get('not.cachable.list').split()
14
15			def conditional_http_tween(request):
16			response = handler(request)
17
18			if request.path not in not_cacheble_list:
19
20			# If the Last-Modified header has been set, we want to enable the
21			# conditional response processing.
22			if response.last_modified is not None:
23			response.conditional_response = True
24
25			# We want to only enable the conditional machinery if either we
26			# were given an explicit ETag header by the view or we have a
27			# buffered response and can generate the ETag header ourself.
28			if response.etag is not None:
29			response.conditional_response = True
30			elif (isinstance(response.app_iter, Sequence) and
31			len(response.app_iter) == 1) and response.body is not None:
32			response.conditional_response = True
33			response.md5_etag()
34
35			return response
36
37			return conditional_http_tween
38

OnroerendErfgoed / oe_utils

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conditional_http_tween() C

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