def file_response(request,
filepath,
block=None,
status_code=None,
content_type=None,
encoding=None,
cache_control=None):
"""Utility for serving a local file
Typical usage::
from pulsar.apps import wsgi
class MyRouter(wsgi.Router):
def get(self, request):
return wsgi.file_response(request, "<filepath>")
:param request: Wsgi request
:param filepath: full path of file to serve
:param block: Optional block size (deafult 1MB)
:param status_code: Optional status code (default 200)
:return: a :class:`~.WsgiResponse` object
"""
file_wrapper = request.get('wsgi.file_wrapper')
if os.path.isfile(filepath):
response = request.response
info = os.stat(filepath)
size = info[stat.ST_SIZE]
modified = info[stat.ST_MTIME]
header = request.get('HTTP_IF_MODIFIED_SINCE')
if not was_modified_since(header, modified, size):
response.status_code = 304
else:
if not content_type:
content_type, encoding = mimetypes.guess_type(filepath)
file = open(filepath, 'rb')
response.headers['content-length'] = str(size)
response.content = file_wrapper(file, block)
response.content_type = content_type
response.encoding = encoding
if status_code:
response.status_code = status_code
else:
response.headers["Last-Modified"] = http_date(modified)
if cache_control:
etag = digest('modified: %d - size: %d' % (modified, size))
cache_control(response.headers, etag=etag)
return response
raise Http404
def serve_file(self, environ, fullpath):
# Respect the If-Modified-Since header.
statobj = os.stat(fullpath)
content_type, encoding = mimetypes.guess_type(fullpath)
content_type = content_type or self.DEFAULT_CONTENT_TYPE
if not self.was_modified_since(environ.get('HTTP_IF_MODIFIED_SINCE'),
statobj[stat.ST_MTIME],
statobj[stat.ST_SIZE]):
return wsgi.WsgiResponse(status=304,
content_type=content_type,
encoding=encoding)
contents = open(fullpath, 'rb').read()
response = wsgi.WsgiResponse(content=contents,
content_type=content_type,
encoding=encoding)
response.headers["Last-Modified"] = http_date(statobj[stat.ST_MTIME])
return response
def serve_file(self, request, fullpath):
# Respect the If-Modified-Since header.
statobj = os.stat(fullpath)
content_type, encoding = mimetypes.guess_type(fullpath)
response = request.response
if content_type:
response.content_type = content_type
response.encoding = encoding
if not self.was_modified_since(
request.environ.get('HTTP_IF_MODIFIED_SINCE'),
statobj[stat.ST_MTIME], statobj[stat.ST_SIZE]):
response.status_code = 304
else:
response.content = open(fullpath, 'rb').read()
response.headers["Last-Modified"] = http_date(
statobj[stat.ST_MTIME])
return response
def file_response(request, filepath, block=None, status_code=None,
content_type=None, encoding=None, cache_control=None):
"""Utility for serving a local file
Typical usage::
from pulsar.apps import wsgi
class MyRouter(wsgi.Router):
def get(self, request):
return wsgi.file_response(request, "<filepath>")
:param request: Wsgi request
:param filepath: full path of file to serve
:param block: Optional block size (deafult 1MB)
:param status_code: Optional status code (default 200)
:return: a :class:`~.WsgiResponse` object
"""
file_wrapper = request.get('wsgi.file_wrapper')
if os.path.isfile(filepath):
response = request.response
info = os.stat(filepath)
size = info[stat.ST_SIZE]
modified = info[stat.ST_MTIME]
header = request.get('HTTP_IF_MODIFIED_SINCE')
if not was_modified_since(header, modified, size):
response.status_code = 304
else:
if not content_type:
content_type, encoding = mimetypes.guess_type(filepath)
file = open(filepath, 'rb')
response.headers['content-length'] = str(size)
response.content = file_wrapper(file, block)
response.content_type = content_type
response.encoding = encoding
if status_code:
response.status_code = status_code
else:
response.headers["Last-Modified"] = http_date(modified)
if cache_control:
etag = digest('modified: %d - size: %d' % (modified, size))
cache_control(response.headers, etag=etag)
return response
raise Http404
def serve_file(self, request, fullpath):
# Respect the If-Modified-Since header.
statobj = os.stat(fullpath)
content_type, encoding = mimetypes.guess_type(fullpath)
response = request.response
if content_type:
response.content_type = content_type
response.encoding = encoding
if not self.was_modified_since(
request.environ.get('HTTP_IF_MODIFIED_SINCE'),
statobj[stat.ST_MTIME],
statobj[stat.ST_SIZE]):
response.status_code = 304
else:
response.content = open(fullpath, 'rb').read()
response.headers["Last-Modified"] = http_date(
statobj[stat.ST_MTIME])
return response
def test_http_date(self):
now = time.time()
fmt = http_date(now)
self.assertTrue(fmt.endswith(' GMT'))
self.assertEqual(fmt[3:5], ', ')
def test_http_date(self):
now = time.time()
fmt = http_date(now)
self.assertTrue(fmt.endswith(" GMT"))
self.assertEqual(fmt[3:5], ", ")
def test_http_date(self):
now = time.time()
fmt = httpurl.http_date(now)
self.assertTrue(fmt.endswith(' GMT'))
self.assertEqual(fmt[3:5], ', ')
