Mercurial > hg
view mercurial/hgweb/wsgicgi.py @ 47072:4c041c71ec01
revlog: introduce an explicit tracking of what the revlog is about
Since the dawn of time, people have been forced to rely to lossy introspection
of the index filename to determine what the purpose and role of the revlog they
encounter is. This is hacky, error prone, inflexible, abstraction-leaky,
<insert-your-own-complaints-here>.
In f63299ee7e4d Raphaël introduced a new attribute to track this information:
`revlog_kind`. However it is initialized in an odd place and various instances
end up not having it set. In addition is only tracking some of the information
we end up having to introspect in various pieces of code.
So we add a new attribute that holds more data and is more strictly enforced.
This work is done in collaboration with Raphaël.
The `revlog_kind` one will be removed/adapted in the next changeset. We expect
to be able to clean up various existing piece of code and to simplify coming
work around the newer revlog format.
Differential Revision: https://phab.mercurial-scm.org/D10352
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Tue, 06 Apr 2021 05:20:24 +0200 |
parents | 56483ab91e66 |
children | 6000f5b25c9b |
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# hgweb/wsgicgi.py - CGI->WSGI translator # # Copyright 2006 Eric Hopper <hopper@omnifarious.org> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. # # This was originally copied from the public domain code at # http://www.python.org/dev/peps/pep-0333/#the-server-gateway-side from __future__ import absolute_import import os from ..pycompat import getattr from .. import pycompat from ..utils import procutil from . import common def launch(application): procutil.setbinary(procutil.stdin) procutil.setbinary(procutil.stdout) environ = dict(pycompat.iteritems(os.environ)) # re-exports environ.setdefault('PATH_INFO', '') if environ.get('SERVER_SOFTWARE', '').startswith('Microsoft-IIS'): # IIS includes script_name in PATH_INFO scriptname = environ['SCRIPT_NAME'] if environ['PATH_INFO'].startswith(scriptname): environ['PATH_INFO'] = environ['PATH_INFO'][len(scriptname) :] stdin = procutil.stdin if environ.get('HTTP_EXPECT', '').lower() == '100-continue': stdin = common.continuereader(stdin, procutil.stdout.write) environ['wsgi.input'] = stdin environ['wsgi.errors'] = procutil.stderr environ['wsgi.version'] = (1, 0) environ['wsgi.multithread'] = False environ['wsgi.multiprocess'] = True environ['wsgi.run_once'] = True if environ.get('HTTPS', 'off').lower() in ('on', '1', 'yes'): environ['wsgi.url_scheme'] = 'https' else: environ['wsgi.url_scheme'] = 'http' headers_set = [] headers_sent = [] out = procutil.stdout def write(data): if not headers_set: raise AssertionError(b"write() before start_response()") elif not headers_sent: # Before the first output, send the stored headers status, response_headers = headers_sent[:] = headers_set out.write(b'Status: %s\r\n' % pycompat.bytesurl(status)) for hk, hv in response_headers: out.write( b'%s: %s\r\n' % (pycompat.bytesurl(hk), pycompat.bytesurl(hv)) ) out.write(b'\r\n') out.write(data) out.flush() def start_response(status, response_headers, exc_info=None): if exc_info: try: if headers_sent: # Re-raise original exception if headers sent raise exc_info[0](exc_info[1], exc_info[2]) finally: del exc_info # avoid dangling circular ref elif headers_set: raise AssertionError(b"Headers already set!") headers_set[:] = [status, response_headers] return write content = application(environ, start_response) try: for chunk in content: write(chunk) if not headers_sent: write(b'') # send headers now if body was empty finally: getattr(content, 'close', lambda: None)()