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137 lines
4.5 KiB
137 lines
4.5 KiB
"""Wrapper for mod_fastcgi, for use as a CherryPy HTTP server when testing.
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To autostart fastcgi, the "apache" executable or script must be
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on your system path, or you must override the global APACHE_PATH.
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On some platforms, "apache" may be called "apachectl", "apache2ctl",
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or "httpd"--create a symlink to them if needed.
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You'll also need the WSGIServer from flup.servers.
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See http://projects.amor.org/misc/wiki/ModPythonGateway
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KNOWN BUGS
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==========
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1. Apache processes Range headers automatically; CherryPy's truncated
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output is then truncated again by Apache. See test_core.testRanges.
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This was worked around in http://www.cherrypy.org/changeset/1319.
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2. Apache does not allow custom HTTP methods like CONNECT as per the spec.
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See test_core.testHTTPMethods.
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3. Max request header and body settings do not work with Apache.
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4. Apache replaces status "reason phrases" automatically. For example,
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CherryPy may set "304 Not modified" but Apache will write out
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"304 Not Modified" (capital "M").
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5. Apache does not allow custom error codes as per the spec.
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6. Apache (or perhaps modpython, or modpython_gateway) unquotes %xx in the
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Request-URI too early.
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7. mod_python will not read request bodies which use the "chunked"
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transfer-coding (it passes REQUEST_CHUNKED_ERROR to ap_setup_client_block
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instead of REQUEST_CHUNKED_DECHUNK, see Apache2's http_protocol.c and
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mod_python's requestobject.c).
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8. Apache will output a "Content-Length: 0" response header even if there's
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no response entity body. This isn't really a bug; it just differs from
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the CherryPy default.
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"""
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import os
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import re
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import cherrypy
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from cherrypy.process import servers
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from cherrypy.test import helper
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curdir = os.path.join(os.getcwd(), os.path.dirname(__file__))
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def read_process(cmd, args=''):
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pipein, pipeout = os.popen4('%s %s' % (cmd, args))
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try:
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firstline = pipeout.readline()
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if (re.search(r'(not recognized|No such file|not found)', firstline,
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re.IGNORECASE)):
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raise IOError('%s must be on your system path.' % cmd)
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output = firstline + pipeout.read()
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finally:
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pipeout.close()
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return output
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APACHE_PATH = 'apache2ctl'
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CONF_PATH = 'fastcgi.conf'
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conf_fastcgi = """
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# Apache2 server conf file for testing CherryPy with mod_fastcgi.
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# fumanchu: I had to hard-code paths due to crazy Debian layouts :(
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ServerRoot /usr/lib/apache2
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User #1000
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ErrorLog %(root)s/mod_fastcgi.error.log
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DocumentRoot "%(root)s"
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ServerName 127.0.0.1
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Listen %(port)s
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LoadModule fastcgi_module modules/mod_fastcgi.so
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LoadModule rewrite_module modules/mod_rewrite.so
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Options +ExecCGI
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SetHandler fastcgi-script
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RewriteEngine On
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RewriteRule ^(.*)$ /fastcgi.pyc [L]
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FastCgiExternalServer "%(server)s" -host 127.0.0.1:4000
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"""
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def erase_script_name(environ, start_response):
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environ['SCRIPT_NAME'] = ''
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return cherrypy.tree(environ, start_response)
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class ModFCGISupervisor(helper.LocalWSGISupervisor):
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httpserver_class = 'cherrypy.process.servers.FlupFCGIServer'
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using_apache = True
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using_wsgi = True
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template = conf_fastcgi
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def __str__(self):
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return 'FCGI Server on %s:%s' % (self.host, self.port)
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def start(self, modulename):
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cherrypy.server.httpserver = servers.FlupFCGIServer(
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application=erase_script_name, bindAddress=('127.0.0.1', 4000))
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cherrypy.server.httpserver.bind_addr = ('127.0.0.1', 4000)
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cherrypy.server.socket_port = 4000
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# For FCGI, we both start apache...
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self.start_apache()
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# ...and our local server
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cherrypy.engine.start()
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self.sync_apps()
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def start_apache(self):
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fcgiconf = CONF_PATH
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if not os.path.isabs(fcgiconf):
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fcgiconf = os.path.join(curdir, fcgiconf)
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# Write the Apache conf file.
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f = open(fcgiconf, 'wb')
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try:
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server = repr(os.path.join(curdir, 'fastcgi.pyc'))[1:-1]
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output = self.template % {'port': self.port, 'root': curdir,
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'server': server}
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output = output.replace('\r\n', '\n')
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f.write(output)
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finally:
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f.close()
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result = read_process(APACHE_PATH, '-k start -f %s' % fcgiconf)
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if result:
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print(result)
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def stop(self):
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"""Gracefully shutdown a server that is serving forever."""
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read_process(APACHE_PATH, '-k stop')
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helper.LocalWSGISupervisor.stop(self)
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def sync_apps(self):
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cherrypy.server.httpserver.fcgiserver.application = self.get_app(
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erase_script_name)
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