root / daemons / ganeti-rapi @ 3fc175f0
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#!/usr/bin/python |
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# |
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|
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# Copyright (C) 2006, 2007 Google Inc. |
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# |
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# This program is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# This program is distributed in the hope that it will be useful, but |
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# WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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# General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program; if not, write to the Free Software |
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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# 02110-1301, USA. |
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|
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""" Ganeti Remote API master script. |
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""" |
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|
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import glob |
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import logging |
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import optparse |
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import sys |
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import os |
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import signal |
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|
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from ganeti import logger |
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from ganeti import constants |
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from ganeti import errors |
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from ganeti import http |
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from ganeti import ssconf |
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from ganeti import utils |
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from ganeti.rapi import connector |
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|
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|
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class RESTRequestHandler(http.HTTPRequestHandler): |
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"""REST Request Handler Class. |
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|
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""" |
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def setup(self): |
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super(RESTRequestHandler, self).setup() |
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self._resmap = connector.Mapper() |
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|
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def HandleRequest(self): |
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""" Handels a request. |
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|
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""" |
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(HandlerClass, items, args) = self._resmap.getController(self.path) |
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handler = HandlerClass(self, items, args, self.post_data) |
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|
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command = self.command.upper() |
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try: |
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fn = getattr(handler, command) |
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except AttributeError, err: |
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raise http.HTTPBadRequest() |
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|
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try: |
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try: |
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result = fn() |
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except: |
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logging.exception("Error while handling the %s request", command) |
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raise |
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|
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except errors.OpPrereqError, err: |
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# TODO: "Not found" is not always the correct error. Ganeti's core must |
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# differentiate between different error types. |
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raise http.HTTPNotFound(message=str(err)) |
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|
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return result |
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|
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class RESTHttpServer(http.HTTPServer): |
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def serve_forever(self): |
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"""Handle one request at a time until told to quit.""" |
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sighandler = utils.SignalHandler([signal.SIGINT, signal.SIGTERM]) |
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try: |
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while not sighandler.called: |
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self.handle_request() |
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finally: |
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sighandler.Reset() |
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|
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|
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def ParseOptions(): |
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"""Parse the command line options. |
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|
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Returns: |
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(options, args) as from OptionParser.parse_args() |
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|
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""" |
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parser = optparse.OptionParser(description="Ganeti Remote API", |
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usage="%prog [-d] [-p port]", |
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version="%%prog (ganeti) %s" % |
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constants.RAPI_VERSION) |
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parser.add_option("-d", "--debug", dest="debug", |
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help="Enable some debug messages", |
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default=False, action="store_true") |
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parser.add_option("-p", "--port", dest="port", |
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help="Port to run API (%s default)." % |
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constants.RAPI_PORT, |
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default=constants.RAPI_PORT, type="int") |
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parser.add_option("-S", "--https", dest="ssl", |
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help="Secure HTTP protocol with SSL", |
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default=False, action="store_true") |
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parser.add_option("-K", "--ssl-key", dest="ssl_key", |
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help="SSL key", |
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default=None, type="string") |
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parser.add_option("-C", "--ssl-cert", dest="ssl_cert", |
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help="SSL certificate", |
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default=None, type="string") |
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parser.add_option("-f", "--foreground", dest="fork", |
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help="Don't detach from the current terminal", |
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default=True, action="store_false") |
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|
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options, args = parser.parse_args() |
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if len(args) != 0: |
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print >> sys.stderr, "Usage: %s [-d] [-p port]" % sys.argv[0] |
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sys.exit(1) |
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|
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if options.ssl and not (options.ssl_cert and options.ssl_key): |
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print >> sys.stderr, ("For secure mode please provide " |
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"--ssl-key and --ssl-cert arguments") |
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sys.exit(1) |
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|
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return options, args |
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|
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def main(): |
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"""Main function. |
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""" |
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options, args = ParseOptions() |
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ssconf.CheckMaster(options.debug) |
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if options.fork: |
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utils.Daemonize(logfile=constants.LOG_RAPISERVER) |
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logger.SetupLogging(constants.LOG_RAPISERVER, debug=options.debug, |
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stderr_logging=not options.fork) |
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utils.WritePidFile(constants.RAPI_PID) |
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log_fd = open(constants.LOG_RAPIACCESS, 'a') |
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try: |
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apache_log = http.ApacheLogfile(log_fd) |
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httpd = RESTHttpServer(("", options.port), RESTRequestHandler, |
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httplog=apache_log) |
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try: |
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httpd.serve_forever() |
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finally: |
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httpd.server_close() |
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utils.RemovePidFile(constants.RAPI_PID) |
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finally: |
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log_fd.close() |
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sys.exit(0) |
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if __name__ == '__main__': |
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main() |