| #!/usr/bin/python |
| |
| # Copyright (c) 2009-2010 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| """A CherryPy-based webserver to host factory installation.""" |
| |
| # This a special fork from devserver for serving factory and may be executed in |
| # a very limited environment without full CrOS source tree. |
| |
| import cherrypy |
| import glob |
| import optparse |
| import os |
| import shutil |
| import socket |
| import sys |
| import threading |
| import time |
| |
| import get_recovery_image |
| import miniomaha_engine |
| |
| CACHED_ENTRIES = 12 |
| |
| |
| def _LogUpdateMessage(message): |
| cherrypy.log(message, 'UPDATE') |
| |
| |
| def _GetConfig(opts): |
| """Returns the configuration for the miniomaha.""" |
| base_config = { 'global': |
| { 'server.log_request_headers': True, |
| 'server.protocol_version': 'HTTP/1.1', |
| 'server.socket_host': |
| '::' if socket.has_ipv6 else '0.0.0.0', |
| 'server.socket_port': int(opts.port), |
| 'server.socket_timeout': 6000, |
| 'response.timeout': 6000, |
| 'tools.staticdir.root': |
| os.path.dirname(os.path.abspath(sys.argv[0])), |
| }, |
| '/api': |
| { |
| # Gets rid of cherrypy parsing post file for args. |
| 'request.process_request_body': False, |
| }, |
| '/update': |
| { |
| # Gets rid of cherrypy parsing post file for args. |
| 'request.process_request_body': False, |
| 'response.timeout': 10000, |
| }, |
| # Sets up the static dir for file hosting. |
| '/static': |
| { 'tools.staticdir.dir': 'static', |
| 'tools.staticdir.on': True, |
| 'response.timeout': 10000, |
| }, |
| } |
| |
| return base_config |
| |
| |
| class UpdateChecker(object): |
| """Class for doing peridically update check.""" |
| |
| def __init__(self, opts, script_dir, cache_dir, _updater, lock): |
| self.opts = opts |
| self.script_dir = script_dir |
| self.cache_dir = cache_dir |
| self.updater = _updater |
| self.update_lock = lock |
| self.timer = None |
| self.base_dir = os.path.realpath(self.opts.data_dir) |
| self.next_version = 1 |
| if opts.boards: |
| self._UpdateCheck(opts.boards.split(',')) |
| else: |
| self._UpdateCheck() |
| |
| def _CleanUpConfig(self): |
| """Put the updated files into initial position""" |
| if self.updater.GetActiveConfigIndex() == 1: |
| # No update |
| return |
| initial_config = self.updater.GetConfig(0) |
| last_config = self.updater.GetConfig(self.updater.GetActiveConfigIndex()) |
| # Parse initial dir for initial_dir/board/release_image |
| initial_dir = os.path.dirname(initial_config[0]['release_image']) |
| initial_dir = os.path.dirname(initial_dir) |
| initial_dir = os.path.join(self.base_dir, initial_dir) |
| |
| # Move the final version of each board into initial dir |
| for board_conf in last_config: |
| board_dir = os.path.dirname(board_conf['release_image']) |
| board_dir = os.path.join(self.base_dir, board_dir) |
| board_name = os.path.basename(board_dir) |
| target_dir = os.path.join(initial_dir, board_name) |
| |
| if os.path.samefile(board_dir, target_dir): |
| continue |
| if os.path.isdir(target_dir): |
| shutil.rmtree(target_dir) |
| shutil.move(board_dir, target_dir) |
| |
| # Correct the file path and pop unnecessary keys |
| for key in board_conf.copy().iterkeys(): |
| if key.endswith('_image'): |
| board_conf[key] = os.path.join(target_dir, |
| os.path.basename(board_conf[key])) |
| elif key.endswith('_size'): |
| board_conf.pop(key) |
| |
| # Overwrite the config file |
| with open(self.opts.factory_config, 'w') as file_handle: |
| file_handle.write('config=%s\n' % last_config) |
| |
| # Remove _ver*/ |
| for version in glob.glob(os.path.join(self.base_dir, '_ver*')): |
| shutil.rmtree(version) |
| |
| def _UpdateCheck(self, boards=None): |
| """Do update check periodically.""" |
| # Initialize preparer and updater |
| if not os.path.exists(self.cache_dir): |
| os.makedirs(self.cache_dir) |
| image_updater = get_recovery_image.ImageUpdater() |
| image_preparer = get_recovery_image.OmahaPreparer(self.script_dir, |
| self.cache_dir) |
| |
| # If boards is set, do an initial update setup for those boards |
| if boards: |
| init_preparer = get_recovery_image.OmahaPreparer( |
| self.script_dir, self.cache_dir, |
| self.opts.factory_config) |
| for board in list(boards): |
| try: |
| updated = image_updater.update_image(board, self.cache_dir) |
| except get_recovery_image.BoardNotFoundException: |
| _LogUpdateMessage('WARNING: No board named %s is found, ignored' % |
| board) |
| boards.remove(board) |
| init_preparer.set_boards_to_update(boards) |
| init_preparer.generate_miniomaha_files() |
| init_preparer.setup_miniomaha_files() |
| self.updater.ImportFactoryConfigFile(self.opts.factory_config , False) |
| |
| # Try to update all boards in config |
| updated_boards = [] |
| active_config = self.updater.GetConfig(self.updater.GetActiveConfigIndex()) |
| for board_conf in active_config: |
| # The format in config is qual_id: set(['board']) |
| for board in board_conf['qual_ids']: |
| updated = image_updater.update_image(board, self.cache_dir) |
| if updated: |
| updated_boards.append(board) |
| _LogUpdateMessage('Detect update for board %s' % board) |
| |
| if not updated_boards: |
| _LogUpdateMessage('Everything up-to-date, update check finished') |
| else: |
| _LogUpdateMessage('Start updating') |
| version_offset = '_ver%s' % self.next_version |
| self.next_version += 1 |
| |
| # Prepare the files for the newly downloaded boards |
| image_preparer.set_boards_to_update(updated_boards) |
| image_preparer.set_version_offset(version_offset) |
| image_preparer.generate_miniomaha_files() |
| image_preparer.setup_miniomaha_files() |
| |
| data_dir = self.base_dir |
| # Change config, critical session |
| with self.update_lock: |
| # Read config |
| config_dir = os.path.join(data_dir, version_offset) |
| config_path = os.path.join(config_dir, 'miniomaha.conf') |
| self.updater.ImportFactoryConfigFile(config_path , False) |
| |
| # Restart timers |
| # Time interval between each update check, by seconds |
| self.timer = threading.Timer(self.opts.interval, self._UpdateCheck) |
| self.timer.daemon = True |
| self.timer.start() |
| |
| def cleanup(self): |
| self.timer.cancel() |
| self._CleanUpConfig() |
| |
| class ApiRoot(object): |
| """RESTful API for Dev Server information.""" |
| exposed = True |
| |
| @cherrypy.expose |
| def hostinfo(self, ip): |
| """Returns a JSON dictionary containing information about the given ip. |
| |
| Not all information may be known at the time the request is made. The |
| possible keys are: |
| |
| last_event_type: int |
| Last update event type received. |
| |
| last_event_status: int |
| Last update event status received. |
| |
| last_known_version: string |
| Last known version recieved for update ping. |
| |
| forced_update_label: string |
| Update label to force next update ping to use. Set by setnextupdate. |
| |
| See the OmahaEvent class in update_engine/omaha_request_action.h for status |
| code definitions. If the ip does not exist an empty string is returned.""" |
| return updater.HandleHostInfoPing(ip) |
| |
| @cherrypy.expose |
| def setnextupdate(self, ip): |
| """Allows the response to the next update ping from a host to be set. |
| |
| Takes the IP of the host and an update label as normally provided to the |
| /update command.""" |
| body_length = int(cherrypy.request.headers['Content-Length']) |
| label = cherrypy.request.rfile.read(body_length) |
| |
| if label: |
| label = label.strip() |
| if label: |
| return updater.HandleSetUpdatePing(ip, label) |
| raise cherrypy.HTTPError(400, 'No label provided.') |
| |
| |
| class DevServerRoot(object): |
| """The Root Class for the Dev Server. |
| |
| CherryPy works as follows: |
| For each method in this class, cherrpy interprets root/path |
| as a call to an instance of DevServerRoot->method_name. For example, |
| a call to http://myhost/build will call build. CherryPy automatically |
| parses http args and places them as keyword arguments in each method. |
| For paths http://myhost/update/dir1/dir2, you can use *args so that |
| cherrypy uses the update method and puts the extra paths in args. |
| """ |
| api = ApiRoot() |
| fail_msg = 'Previous session from %s, uuid: %s, start at %s did not complete' |
| time_string = '%d/%b/%Y %H:%M:%S' |
| |
| def __init__(self, lock, auto_update): |
| self.client_table = {} |
| self.update_lock = lock |
| self.auto_update = auto_update |
| |
| def GetClientConfigIndex(self, ip): |
| return self.client_table[ip]['config_index'] |
| |
| def SetClientConfigIndex(self, ip, index): |
| self.client_table[ip]['config_index'] = index |
| |
| def GetClientStartTime(self, ip): |
| return self.client_table[ip]['start_time'] |
| |
| def SetClientStartTime(self, ip, start_time): |
| self.client_table[ip]['start_time'] = start_time |
| |
| @cherrypy.expose |
| def index(self): |
| return 'Welcome to the Dev Server!' |
| |
| @cherrypy.expose |
| def update(self): |
| client_ip = cherrypy.request.remote.ip.split(':')[-1] |
| body_length = int(cherrypy.request.headers['Content-Length']) |
| data = cherrypy.request.rfile.read(body_length) |
| |
| # For backward compatibility of old install shim. |
| # Updater should work anyway. |
| if client_ip not in self.client_table: |
| if self.auto_update: |
| _LogUpdateMessage( |
| 'WARNING: Detect unrecorded ip: %s. ' |
| 'If you are using an old factory install shim, ' |
| 'there may be unexpected outcome in --auto_update mode' % |
| client_ip) |
| return updater.HandleUpdatePing(data, updater.GetActiveConfigIndex()) |
| |
| return updater.HandleUpdatePing(data, |
| self.GetClientConfigIndex(client_ip)) |
| |
| @cherrypy.expose |
| def greetings(self, label, uuid): |
| # Temporarily use ip as identifier. |
| # This may be changed if we found better session ids |
| client_ip = cherrypy.request.remote.ip.split(':')[-1] |
| |
| if label != 'hello' and client_ip not in self.client_table: |
| _LogUpdateMessage('Unexpected %s notification from %s, uuid: %s' % |
| (label, client_ip, uuid)) |
| return 'Wrong notification' |
| |
| if label == 'hello': |
| if client_ip in self.client_table: |
| # previous session did not complete, print error to log |
| start_time = time.strftime( |
| self.time_string, |
| time.localtime(self.GetClientStartTime(client_ip))) |
| _LogUpdateMessage(self.fail_msg % (client_ip, uuid, start_time)) |
| |
| self.client_table[client_ip] = {} |
| self.SetClientStartTime(client_ip, time.time()) |
| _LogUpdateMessage('Start a install session for %s, uuid: %s' % |
| (client_ip, uuid)) |
| |
| with self.update_lock: |
| self.SetClientConfigIndex(client_ip, updater.GetActiveConfigIndex()) |
| |
| return 'hello' |
| |
| elif label == 'download_complete': |
| _LogUpdateMessage( |
| 'Session from %s, uuid: %s, ' |
| 'successfully downloaded all necessary files' % |
| (client_ip, uuid)) |
| return 'download complete' |
| |
| elif label == 'goodbye': |
| elapse_time = time.time() - self.GetClientStartTime(client_ip) |
| _LogUpdateMessage( |
| 'Session from %s, uuid: %s, ' |
| 'has been completed, elapse time is %s seconds' % |
| (client_ip, uuid, elapse_time)) |
| self.client_table.pop(client_ip) |
| return 'goodbye' |
| |
| #TODO(chunyen): move this to cherrypy exit callback |
| def __del__(self): |
| # Write log for those incomplete session |
| for client_ip in self.client_table: |
| start_time = time.strftime( |
| self.time_string, |
| time.localtime(self.GetClientStartTime(client_ip))) |
| _LogUpdateMessage(self.fail_msg % (client_ip, start_time)) |
| |
| |
| if __name__ == '__main__': |
| base_path = os.path.dirname(os.path.abspath(sys.argv[0])) |
| usage = 'usage: %prog [options]' |
| parser = optparse.OptionParser(usage) |
| parser.add_option('--data_dir', dest='data_dir', |
| help='Writable directory where static lives', |
| default=os.path.join(base_path,'static')) |
| parser.add_option('--factory_config', dest='factory_config', |
| help='Config file for serving images from factory floor.', |
| default=None) |
| parser.add_option('--port', default=8080, |
| help='Port for the dev server to use.') |
| parser.add_option('--proxy_port', default=None, |
| help='Port to have the client connect to (testing support)') |
| parser.add_option('--validate_factory_config', action="store_true", |
| dest='validate_factory_config', |
| help='Validate factory config file, then exit.') |
| parser.add_option('--log', dest='log_path', |
| help='Path for server execution log', |
| default=os.path.join(base_path, 'miniomaha.log')) |
| parser.add_option('--auto_update', action='store_true', dest='auto_update', |
| help='Enable auto updating image from server') |
| parser.add_option('--cache', dest='cache_dir', default=None, |
| help='Cache_dir for auto update images') |
| parser.add_option('--interval', dest='interval', default=1800, type=int, |
| help='Interval between each update check') |
| parser.add_option('--boards', dest='boards', default=None, |
| help='Name of boards to track in auto-update mode, ' |
| 'split by comma.') |
| parser.set_usage(parser.format_help()) |
| (options, _) = parser.parse_args() |
| |
| static_dir = os.path.realpath(options.data_dir) |
| os.system('mkdir -p %s' % static_dir) |
| |
| cherrypy.log('Data dir is %s' % options.data_dir, 'DEVSERVER') |
| cherrypy.log('Serving from %s' % static_dir, 'DEVSERVER') |
| |
| updater = miniomaha_engine.ServerEngine( |
| static_dir=static_dir, |
| proxy_port=options.proxy_port |
| ) |
| updater_lock = threading.Lock() |
| |
| # Auto update is not support in validate factory config mode |
| if options.validate_factory_config and options.auto_update: |
| cherrypy.log('Auto update is not support when validating factory config', |
| 'DEVSERVER') |
| options.auto_update = False |
| |
| # --boards only works in auto update mode |
| if options.boards and not options.auto_update: |
| cherrypy.log('--boards only works in auto_update mode') |
| options.boards = None |
| |
| # Sanity-check for use of validate_factory_config. |
| # In previous version, the default configuration file is in base_path, |
| # but now it is in data_dir, |
| # so we want to check both for backward compatibility. |
| if not options.factory_config: |
| config_files = (os.path.join(base_path, 'miniomaha.conf'), |
| os.path.join(options.data_dir, 'miniomaha.conf')) |
| exists = map(os.path.exists, config_files) |
| |
| # When boards is set, we always use the current default data dir |
| if options.boards: |
| options.factory_config = config_files[1] |
| elif all(exists): |
| parser.error('Confusing factory config files.\n' |
| 'Please remove the old config file in %s' % base_path) |
| elif any(exists): |
| options.factory_config = config_files[exists.index(True)] |
| else: |
| parser.error('No factory files found') |
| |
| # When boards is set, we should import config after the first update check. |
| if not options.boards: |
| updater.ImportFactoryConfigFile(options.factory_config, |
| options.validate_factory_config) |
| |
| # We've done validating factory config, exit now! |
| if options.validate_factory_config: |
| sys.exit(0) |
| |
| if options.auto_update: |
| # Set up cache directory. |
| options.cache_dir = (options.cache_dir or |
| os.path.join(base_path, 'cache_dir')) |
| # Ensure that the configure file in cache directory is the same as that |
| # in data directory. |
| if os.path.exists(options.factory_config): |
| shutil.copy(options.factory_config, options.cache_dir) |
| update_checker = UpdateChecker(options, base_path, options.cache_dir, |
| updater, updater_lock) |
| |
| # Since cheerypy need an existing file to append log, |
| # here we make sure the log file path exist and ready for writing. |
| with open(options.log_path, 'a'): |
| pass |
| cherrypy.log.screen = True |
| cherrypy.log.access_file = options.log_path |
| cherrypy.log.error_file = options.log_path |
| cherrypy.quickstart(DevServerRoot(updater_lock, options.auto_update), |
| config=_GetConfig(options)) |
| if options.auto_update: |
| update_checker.cleanup() |
| # Sync the config file again to avoid error if user run |
| # get_recovery_image.py |
| shutil.copy(options.factory_config, options.cache_dir) |
