openvimd.py

   1 #!/usr/bin/env python
   2 # -*- coding: utf-8 -*-
   3
   4 ##
   5 # Copyright 2015 Telefónica Investigación y Desarrollo, S.A.U.
   6 # This file is part of openvim
   7 # All Rights Reserved.
   8 #
   9 # Licensed under the Apache License, Version 2.0 (the "License"); you may
  10 # not use this file except in compliance with the License. You may obtain
  11 # a copy of the License at
  12 #
  13 #         http://www.apache.org/licenses/LICENSE-2.0
  14 #
  15 # Unless required by applicable law or agreed to in writing, software
  16 # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  17 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  18 # License for the specific language governing permissions and limitations
  19 # under the License.
  20 #
  21 # For those usages not covered by the Apache License, Version 2.0 please
  22 # contact with: nfvlabs@tid.es
  23 ##
  24
  25 '''
  26 This is the main program of openvim, it reads the configuration
  27 and launches the rest of threads: http clients, openflow controller
  28 and host controllers
  29 '''
  30
  31 __author__="Alfonso Tierno"
  32 __date__ ="$10-jul-2014 12:07:15$"
  33 __version__="0.4.8-r495"
  34 version_date="Sep 2016"
  35 database_version="0.7"      #expected database schema version
  36
  37 import httpserver
  38 import auxiliary_functions as af
  39 import sys
  40 import getopt
  41 import time
  42 import vim_db
  43 import yaml
  44 import os
  45 from jsonschema import validate as js_v, exceptions as js_e
  46 import host_thread as ht
  47 import dhcp_thread as dt
  48 import openflow_thread as oft
  49 import threading
  50 from vim_schema import config_schema
  51 import logging
  52 import logging.handlers as log_handlers
  53 import imp
  54 import socket
  55
  56 global config_dic
  57 global logger
  58 logger = logging.getLogger('vim')
  59
  60 class LoadConfigurationException(Exception):
  61     pass
  62
  63 def load_configuration(configuration_file):
  64     default_tokens ={'http_port':9080, 'http_host':'localhost',
  65                      'of_controller_nets_with_same_vlan':True,
  66                      'image_path':'/opt/VNF/images',
  67                      'network_vlan_range_start':1000,
  68                      'network_vlan_range_end': 4096,
  69                      'log_level': "DEBUG",
  70                      'log_level_db': "ERROR",
  71                      'log_level_of': 'ERROR',
  72             }
  73     try:
  74         #First load configuration from configuration file
  75         #Check config file exists
  76         if not os.path.isfile(configuration_file):
  77             return (False, "Configuration file '"+configuration_file+"' does not exists")
  78
  79         #Read and parse file
  80         (return_status, code) = af.read_file(configuration_file)
  81         if not return_status:
  82             return (return_status, "Error loading configuration file '"+configuration_file+"': "+code)
  83         try:
  84             config = yaml.load(code)
  85         except yaml.YAMLError, exc:
  86             error_pos = ""
  87             if hasattr(exc, 'problem_mark'):
  88                 mark = exc.problem_mark
  89                 error_pos = " at position: (%s:%s)" % (mark.line+1, mark.column+1)
  90             return (False, "Error loading configuration file '"+configuration_file+"'"+error_pos+": content format error: Failed to parse yaml format")
  91
  92
  93         try:
  94             js_v(config, config_schema)
  95         except js_e.ValidationError, exc:
  96             error_pos = ""
  97             if len(exc.path)>0: error_pos=" at '" + ":".join(map(str, exc.path))+"'"
  98             return False, "Error loading configuration file '"+configuration_file+"'"+error_pos+": "+exc.message
  99
 100
 101         #Check default values tokens
 102         for k,v in default_tokens.items():
 103             if k not in config: config[k]=v
 104         #Check vlan ranges
 105         if config["network_vlan_range_start"]+10 >= config["network_vlan_range_end"]:
 106             return False, "Error invalid network_vlan_range less than 10 elements"
 107
 108     except Exception,e:
 109         return (False, "Error loading configuration file '"+configuration_file+"': "+str(e))
 110     return (True, config)
 111
 112 def create_database_connection(config_dic):
 113     db = vim_db.vim_db( (config_dic["network_vlan_range_start"],config_dic["network_vlan_range_end"]), config_dic['log_level_db'] );
 114     if db.connect(config_dic['db_host'], config_dic['db_user'], config_dic['db_passwd'], config_dic['db_name']) == -1:
 115         logger.error("Cannot connect to database %s at %s@%s", config_dic['db_name'], config_dic['db_user'], config_dic['db_host'])
 116         exit(-1)
 117     return db
 118
 119 def usage():
 120     print "Usage: ", sys.argv[0], "[options]"
 121     print "      -v|--version: prints current version"
 122     print "      -c|--config [configuration_file]: loads the configuration file (default: openvimd.cfg)"
 123     print "      -h|--help: shows this help"
 124     print "      -p|--port [port_number]: changes port number and overrides the port number in the configuration file (default: 9090)"
 125     print "      -P|--adminport [port_number]: changes admin port number and overrides the port number in the configuration file (default: 9095)"
 126     #print( "      --log-socket-host HOST: send logs to this host")
 127     #print( "      --log-socket-port PORT: send logs using this port (default: 9022)")
 128     print( "      --log-file FILE: send logs to this file")
 129     return
 130
 131
 132 if __name__=="__main__":
 133     hostname = socket.gethostname()
 134     #streamformat = "%(levelname)s (%(module)s:%(lineno)d) %(message)s"
 135     log_formatter_complete = logging.Formatter(
 136         '%(asctime)s.%(msecs)03d00Z[{host}@openmanod] %(filename)s:%(lineno)s severity:%(levelname)s logger:%(name)s log:%(message)s'.format(host=hostname),
 137         datefmt='%Y-%m-%dT%H:%M:%S',
 138     )
 139     log_format_simple =  "%(asctime)s %(levelname)s  %(name)s %(filename)s:%(lineno)s %(message)s"
 140     log_formatter_simple = logging.Formatter(log_format_simple, datefmt='%Y-%m-%dT%H:%M:%S')
 141     logging.basicConfig(format=log_format_simple, level= logging.DEBUG)
 142     logger = logging.getLogger('openmano')
 143     logger.setLevel(logging.DEBUG)
 144     try:
 145         opts, args = getopt.getopt(sys.argv[1:], "hvc:p:P:", ["config=", "help", "version", "port=", "adminport=", "log-file="])
 146     except getopt.GetoptError, err:
 147         # print help information and exit:
 148         logger.error("%s. Type -h for help", err) # will print something like "option -a not recognized"
 149         #usage()
 150         sys.exit(-2)
 151
 152     port=None
 153     port_admin = None
 154     config_file = 'openvimd.cfg'
 155     log_file = None
 156
 157     for o, a in opts:
 158         if o in ("-v", "--version"):
 159             print "openvimd version", __version__, version_date
 160             print "(c) Copyright Telefonica"
 161             sys.exit(0)
 162         elif o in ("-h", "--help"):
 163             usage()
 164             sys.exit(0)
 165         elif o in ("-c", "--config"):
 166             config_file = a
 167         elif o in ("-p", "--port"):
 168             port = a
 169         elif o in ("-P", "--adminport"):
 170             port_admin = a
 171         elif o == "--log-file":
 172             log_file = a
 173         else:
 174             assert False, "Unhandled option"
 175
 176
 177     try:
 178         #Load configuration file
 179         r, config_dic = load_configuration(config_file)
 180         #print config_dic
 181         if not r:
 182             logger.error(config_dic)
 183             config_dic={}
 184             exit(-1)
 185         if log_file:
 186             try:
 187                 file_handler= logging.handlers.RotatingFileHandler(log_file, maxBytes=100e6, backupCount=9, delay=0)
 188                 file_handler.setFormatter(log_formatter_simple)
 189                 logger.addHandler(file_handler)
 190                 #logger.debug("moving logs to '%s'", global_config["log_file"])
 191                 #remove initial stream handler
 192                 logging.root.removeHandler(logging.root.handlers[0])
 193                 print ("logging on '{}'".format(log_file))
 194             except IOError as e:
 195                 raise LoadConfigurationException("Cannot open logging file '{}': {}. Check folder exist and permissions".format(log_file, str(e)) )
 196
 197         logger.setLevel(getattr(logging, config_dic['log_level']))
 198         logger.critical("Starting openvim server command: '%s'", sys.argv[0])
 199         #override parameters obtained by command line
 200         if port is not None: config_dic['http_port'] = port
 201         if port_admin is not None: config_dic['http_admin_port'] = port_admin
 202
 203         #check mode
 204         if 'mode' not in config_dic:
 205             config_dic['mode'] = 'normal'
 206             #allow backward compatibility of test_mode option
 207             if 'test_mode' in config_dic and config_dic['test_mode']==True:
 208                 config_dic['mode'] = 'test'
 209         if config_dic['mode'] == 'development' and ( 'development_bridge' not in config_dic or config_dic['development_bridge'] not in config_dic.get("bridge_ifaces",None) ):
 210             logger.error("'%s' is not a valid 'development_bridge', not one of the 'bridge_ifaces'", config_file)
 211             exit(-1)
 212
 213         if config_dic['mode'] != 'normal':
 214             print '!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!'
 215             print "!! Warning, openvimd in TEST mode '%s'" % config_dic['mode']
 216             print '!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!'
 217         config_dic['version'] = __version__
 218
 219     #Connect to database
 220         db_http = create_database_connection(config_dic)
 221         r = db_http.get_db_version()
 222         if r[0]<0:
 223             logger.error("DATABASE is not a VIM one or it is a '0.0' version. Try to upgrade to version '%s' with './database_utils/migrate_vim_db.sh'", database_version)
 224             exit(-1)
 225         elif r[1]!=database_version:
 226             logger.error("DATABASE wrong version '%s'. Try to upgrade/downgrade to version '%s' with './database_utils/migrate_vim_db.sh'", r[1], database_version)
 227             exit(-1)
 228         db_of = create_database_connection(config_dic)
 229         db_lock= threading.Lock()
 230         config_dic['db'] = db_of
 231         config_dic['db_lock'] = db_lock
 232
 233     #precreate interfaces; [bridge:<host_bridge_name>, VLAN used at Host, uuid of network camping in this bridge, speed in Gbit/s
 234         config_dic['dhcp_nets']=[]
 235         config_dic['bridge_nets']=[]
 236         for bridge,vlan_speed in config_dic["bridge_ifaces"].items():
 237             #skip 'development_bridge'
 238             if config_dic['mode'] == 'development' and config_dic['development_bridge'] == bridge:
 239                 continue
 240             config_dic['bridge_nets'].append( [bridge, vlan_speed[0], vlan_speed[1], None] )
 241         del config_dic["bridge_ifaces"]
 242
 243         #check if this bridge is already used (present at database) for a network)
 244         used_bridge_nets=[]
 245         for brnet in config_dic['bridge_nets']:
 246             r,nets = db_of.get_table(SELECT=('uuid',), FROM='nets',WHERE={'provider': "bridge:"+brnet[0]})
 247             if r>0:
 248                 brnet[3] = nets[0]['uuid']
 249                 used_bridge_nets.append(brnet[0])
 250                 if config_dic.get("dhcp_server"):
 251                     if brnet[0] in config_dic["dhcp_server"]["bridge_ifaces"]:
 252                         config_dic['dhcp_nets'].append(nets[0]['uuid'])
 253         if len(used_bridge_nets) > 0 :
 254             logger.info("found used bridge nets: " + ",".join(used_bridge_nets))
 255         #get nets used by dhcp
 256         if config_dic.get("dhcp_server"):
 257             for net in config_dic["dhcp_server"].get("nets", () ):
 258                 r,nets = db_of.get_table(SELECT=('uuid',), FROM='nets',WHERE={'name': net})
 259                 if r>0:
 260                     config_dic['dhcp_nets'].append(nets[0]['uuid'])
 261
 262     # get host list from data base before starting threads
 263         r,hosts = db_of.get_table(SELECT=('name','ip_name','user','uuid'), FROM='hosts', WHERE={'status':'ok'})
 264         if r<0:
 265             logger.error("Cannot get hosts from database %s", hosts)
 266             exit(-1)
 267     # create connector to the openflow controller
 268         of_test_mode = False if config_dic['mode']=='normal' or config_dic['mode']=="OF only" else True
 269
 270         if of_test_mode:
 271             OF_conn = oft.of_test_connector({"of_debug": config_dic['log_level_of']} )
 272         else:
 273             #load other parameters starting by of_ from config dict in a temporal dict
 274             temp_dict={ "of_ip":  config_dic['of_controller_ip'],
 275                         "of_port": config_dic['of_controller_port'],
 276                         "of_dpid": config_dic['of_controller_dpid'],
 277                         "of_debug":   config_dic['log_level_of']
 278                 }
 279             for k,v in config_dic.iteritems():
 280                 if type(k) is str and k[0:3]=="of_" and k[0:13] != "of_controller":
 281                     temp_dict[k]=v
 282             if config_dic['of_controller']=='opendaylight':
 283                 module = "ODL"
 284             elif "of_controller_module" in config_dic:
 285                 module = config_dic["of_controller_module"]
 286             else:
 287                 module = config_dic['of_controller']
 288             module_info=None
 289             try:
 290                 module_info = imp.find_module(module)
 291
 292                 OF_conn = imp.load_module("OF_conn", *module_info)
 293                 try:
 294                     OF_conn = OF_conn.OF_conn(temp_dict)
 295                 except Exception as e:
 296                     logger.error("Cannot open the Openflow controller '%s': %s", type(e).__name__, str(e))
 297                     if module_info and module_info[0]:
 298                         file.close(module_info[0])
 299                     exit(-1)
 300             except (IOError, ImportError) as e:
 301                 if module_info and module_info[0]:
 302                     file.close(module_info[0])
 303                 logger.error("Cannot open openflow controller module '%s'; %s: %s; revise 'of_controller' field of configuration file.", module, type(e).__name__, str(e))
 304                 exit(-1)
 305
 306
 307     #create openflow thread
 308         thread = oft.openflow_thread(OF_conn, of_test=of_test_mode, db=db_of,  db_lock=db_lock,
 309                         pmp_with_same_vlan=config_dic['of_controller_nets_with_same_vlan'],
 310                         debug=config_dic['log_level_of'])
 311         r,c = thread.OF_connector.obtain_port_correspondence()
 312         if r<0:
 313             logger.error("Cannot get openflow information %s", c)
 314             exit()
 315         thread.start()
 316         config_dic['of_thread'] = thread
 317
 318     #create dhcp_server thread
 319         host_test_mode = True if config_dic['mode']=='test' or config_dic['mode']=="OF only" else False
 320         dhcp_params = config_dic.get("dhcp_server")
 321         if dhcp_params:
 322             thread = dt.dhcp_thread(dhcp_params=dhcp_params, test=host_test_mode, dhcp_nets=config_dic["dhcp_nets"], db=db_of,  db_lock=db_lock, debug=config_dic['log_level_of'])
 323             thread.start()
 324             config_dic['dhcp_thread'] = thread
 325
 326
 327     #Create one thread for each host
 328         host_test_mode = True if config_dic['mode']=='test' or config_dic['mode']=="OF only" else False
 329         host_develop_mode = True if config_dic['mode']=='development' else False
 330         host_develop_bridge_iface = config_dic.get('development_bridge', None)
 331         config_dic['host_threads'] = {}
 332         for host in hosts:
 333             host['image_path'] = '/opt/VNF/images/openvim'
 334             thread = ht.host_thread(name=host['name'], user=host['user'], host=host['ip_name'], db=db_of, db_lock=db_lock,
 335                     test=host_test_mode, image_path=config_dic['image_path'], version=config_dic['version'],
 336                     host_id=host['uuid'], develop_mode=host_develop_mode, develop_bridge_iface=host_develop_bridge_iface  )
 337             thread.start()
 338             config_dic['host_threads'][ host['uuid'] ] = thread
 339
 340
 341
 342     #Create thread to listen to web requests
 343         http_thread = httpserver.httpserver(db_http, 'http', config_dic['http_host'], config_dic['http_port'], False, config_dic)
 344         http_thread.start()
 345
 346         if 'http_admin_port' in config_dic:
 347             db_http = create_database_connection(config_dic)
 348             http_thread_admin = httpserver.httpserver(db_http, 'http-admin', config_dic['http_host'], config_dic['http_admin_port'], True)
 349             http_thread_admin.start()
 350         else:
 351             http_thread_admin = None
 352         time.sleep(1)
 353         logger.info('Waiting for http clients')
 354         print ('openvimd ready')
 355         print ('====================')
 356         sys.stdout.flush()
 357
 358         #TODO: Interactive console would be nice here instead of join or sleep
 359
 360         r="help" #force print help at the beginning
 361         while True:
 362             if r=='exit':
 363                 break
 364             elif r!='':
 365                 print "type 'exit' for terminate"
 366             r = raw_input('> ')
 367
 368     except (KeyboardInterrupt, SystemExit):
 369         pass
 370     except SystemExit:
 371         pass
 372     except getopt.GetoptError as e:
 373         logger.critical(str(e)) # will print something like "option -a not recognized"
 374         #usage()
 375         exit(-1)
 376     except LoadConfigurationException as e:
 377         logger.critical(str(e))
 378         exit(-1)
 379
 380     logger.info('Exiting openvimd')
 381     threads = config_dic.get('host_threads', {})
 382     if 'of_thread' in config_dic:
 383         threads['of'] = (config_dic['of_thread'])
 384     if 'dhcp_thread' in config_dic:
 385         threads['dhcp'] = (config_dic['dhcp_thread'])
 386
 387     for thread in threads.values():
 388         thread.insert_task("exit")
 389     for thread in threads.values():
 390         thread.join()
 391     #http_thread.join()
 392     #if http_thread_admin is not None:
 393     #http_thread_admin.join()
 394     logger.debug( "bye!")
 395     exit()
 396