openmanod.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 openmano
   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 openmano server.
  27 Main program that implements a reference NFVO (Network Functions Virtualisation Orchestrator).
  28 It interfaces with an NFV VIM through its API and offers a northbound interface, based on REST (openmano API),
  29 where NFV services are offered including the creation and deletion of VNF templates, VNF instances,
  30 network service templates and network service instances.
  31
  32 It loads the configuration file and launches the http_server thread that will listen requests using openmano API.
  33 '''
  34 __author__="Alfonso Tierno, Gerardo Garcia, Pablo Montes"
  35 __date__ ="$26-aug-2014 11:09:29$"
  36 __version__="0.4.45-r484"
  37 version_date="Aug 2016"
  38 database_version="0.11"      #expected database schema version
  39
  40 import httpserver
  41 import time
  42 import sys
  43 import getopt
  44 import yaml
  45 import nfvo_db
  46 from jsonschema import validate as js_v, exceptions as js_e
  47 from openmano_schemas import config_schema
  48 import nfvo
  49 import logging
  50 import logging.handlers as log_handlers
  51 import socket
  52
  53 global global_config
  54 global logger
  55
  56 class LoadConfigurationException(Exception):
  57     pass
  58
  59 def load_configuration(configuration_file):
  60     default_tokens ={'http_port':9090,
  61                      'http_host':'localhost',
  62                      'http_console_proxy': True,
  63                      'http_console_host': None,
  64                      'log_level': 'DEBUG',
  65                      'log_level_db': 'ERROR',
  66                      'log_level_vimconn': 'DEBUG',
  67                      'log_level_nfvo': 'DEBUG',
  68                      'log_socket_port': 9022,
  69                     }
  70     try:
  71         #Check config file exists
  72         with open(configuration_file, 'r') as f:
  73             config_str = f.read()
  74         #Parse configuration file
  75         config = yaml.load(config_str)
  76         #Validate configuration file with the config_schema
  77         js_v(config, config_schema)
  78
  79         #Add default values tokens
  80         for k,v in default_tokens.items():
  81             if k not in config:
  82                 config[k]=v
  83         return config
  84
  85     except yaml.YAMLError as e:
  86         error_pos = ""
  87         if hasattr(e, 'problem_mark'):
  88             mark = e.problem_mark
  89             error_pos = " at line:{} column:{}".format(mark.line+1, mark.column+1)
  90         raise LoadConfigurationException("Bad YAML format at configuration file '{file}'{pos}".format(file=configuration_file, pos=error_pos) )
  91     except js_e.ValidationError as e:
  92         error_pos = ""
  93         if e.path:
  94             error_pos=" at '" + ":".join(map(str, e.path))+"'"
  95         raise LoadConfigurationException("Invalid field at configuration file '{file}'{pos} {message}".format(file=configuration_file, pos=error_pos, message=str(e)) )
  96     except Exception as e:
  97         raise LoadConfigurationException("Cannot load configuration file '{file}' {message}".format(file=configuration_file, message=str(e) ) )
  98
  99
 100 def console_port_iterator():
 101     '''this iterator deals with the http_console_ports
 102     returning the ports one by one
 103     '''
 104     index = 0
 105     while index < len(global_config["http_console_ports"]):
 106         port = global_config["http_console_ports"][index]
 107         #print("ports -> ", port)
 108         if type(port) is int:
 109             yield port
 110         else: #this is dictionary with from to keys
 111             port2 = port["from"]
 112             #print("ports -> ", port, port2)
 113             while port2 <= port["to"]:
 114                 #print("ports -> ", port, port2)
 115                 yield port2
 116                 port2 += 1
 117         index += 1
 118
 119
 120 def usage():
 121     print("Usage: ", sys.argv[0], "[options]")
 122     print( "      -v|--version: prints current version")
 123     print( "      -c|--config [configuration_file]: loads the configuration file (default: openmanod.cfg)")
 124     print( "      -h|--help: shows this help")
 125     print( "      -p|--port [port_number]: changes port number and overrides the port number in the configuration file (default: 9090)")
 126     print( "      -P|--adminport [port_number]: changes admin port number and overrides the port number in the configuration file (default: 9095)")
 127     #print( "      -V|--vnf-repository: changes the path of the vnf-repository and overrides the path in the configuration file")
 128     print( "      --log-socket-host: send logs to this host")
 129     print( "      --log-socket-port: send logs using this port (default: 9022)")
 130     print( "      --log-file: send logs to this file")
 131     return
 132
 133 if __name__=="__main__":
 134     #Configure logging step 1
 135     hostname = socket.gethostname()
 136     #streamformat = "%(levelname)s (%(module)s:%(lineno)d) %(message)s"
 137     # "%(asctime)s %(name)s %(levelname)s %(filename)s:%(lineno)d %(funcName)s %(process)d: %(message)s"
 138     log_formatter_complete = logging.Formatter(
 139         '%(asctime)s.%(msecs)03d00Z[{host}@openmanod] %(filename)s:%(lineno)s severity:%(levelname)s logger:%(name)s log:%(message)s'.format(host=hostname),
 140         datefmt='%Y-%m-%dT%H:%M:%S',
 141     )
 142     log_format_simple =  "%(asctime)s %(levelname)s  %(name)s %(filename)s:%(lineno)s %(message)s"
 143     log_formatter_simple = logging.Formatter(log_format_simple, datefmt='%Y-%m-%dT%H:%M:%S')
 144     logging.basicConfig(format=log_format_simple, level= logging.DEBUG)
 145     logger = logging.getLogger('openmano')
 146     logger.setLevel(logging.DEBUG)
 147     socket_handler = None
 148     file_handler = None
 149     # Read parameters and configuration file
 150     try:
 151         #load parameters and configuration
 152         opts, args = getopt.getopt(sys.argv[1:], "hvc:V:p:P:", ["config", "help", "version", "port", "vnf-repository", "adminport", "log-socket-host=", "log-socket-port=", "log-file="])
 153         port=None
 154         port_admin = None
 155         config_file = 'openmanod.cfg'
 156         vnf_repository = None
 157         log_file = None
 158         log_socket_host = None
 159         log_socket_port = None
 160
 161         for o, a in opts:
 162             if o in ("-v", "--version"):
 163                 print ("openmanod version " + __version__ + ' ' + version_date)
 164                 print ("(c) Copyright Telefonica")
 165                 sys.exit()
 166             elif o in ("-h", "--help"):
 167                 usage()
 168                 sys.exit()
 169             elif o in ("-V", "--vnf-repository"):
 170                 vnf_repository = a
 171             elif o in ("-c", "--config"):
 172                 config_file = a
 173             elif o in ("-p", "--port"):
 174                 port = a
 175             elif o in ("-P", "--adminport"):
 176                 port_admin = a
 177             elif o == "--log-socket-port":
 178                 log_socket_port = a
 179             elif o == "--log-socket-port":
 180                 log_socket_host = a
 181             elif o == "--log-file":
 182                 log_file = a
 183             else:
 184                 assert False, "Unhandled option"
 185         global_config = load_configuration(config_file)
 186         #print global_config
 187         # Override parameters obtained by command line
 188         if port:
 189             global_config['http_port'] = port
 190         if port_admin:
 191             global_config['http_admin_port'] = port_admin
 192         if log_socket_host:
 193             global_config['log_socket_host'] = log_socket_host
 194         if log_socket_port:
 195             global_config['log_socket_port'] = log_socket_port
 196         if log_file:
 197             global_config['log_file'] = log_file
 198 #         if vnf_repository is not None:
 199 #             global_config['vnf_repository'] = vnf_repository
 200 #         else:
 201 #             if not 'vnf_repository' in global_config:
 202 #                 logger.error( os.getcwd() )
 203 #                 global_config['vnf_repository'] = os.getcwd()+'/vnfrepo'
 204 #         #print global_config
 205 #         if not os.path.exists(global_config['vnf_repository']):
 206 #             logger.error( "Creating folder vnf_repository folder: '%s'.", global_config['vnf_repository'])
 207 #             try:
 208 #                 os.makedirs(global_config['vnf_repository'])
 209 #             except Exception as e:
 210 #                 logger.error( "Error '%s'. Ensure the path 'vnf_repository' is properly set at %s",e.args[1], config_file)
 211 #                 exit(-1)
 212
 213         global_config["console_port_iterator"] = console_port_iterator
 214         global_config["console_thread"]={}
 215         global_config["console_ports"]={}
 216         if not global_config["http_console_host"]:
 217             global_config["http_console_host"] = global_config["http_host"]
 218             if global_config["http_host"]=="0.0.0.0":
 219                 global_config["http_console_host"] = socket.gethostname()
 220
 221         #Configure logging STEP 2
 222         if "log_host" in global_config:
 223             socket_handler= log_handlers.SocketHandler(global_config["log_socket_host"], global_config["log_socket_port"])
 224             socket_handler.setFormatter(log_formatter_complete)
 225             if global_config.get("log_socket_level") and global_config["log_socket_level"] != global_config["log_level"]:
 226                 socket_handler.setLevel(global_config["log_socket_level"])
 227             logger.addHandler(socket_handler)
 228         #logger.addHandler(log_handlers.SysLogHandler())
 229         if "log_file" in global_config:
 230             try:
 231                 file_handler= logging.handlers.RotatingFileHandler(global_config["log_file"], maxBytes=100e6, backupCount=9, delay=0)
 232                 file_handler.setFormatter(log_formatter_simple)
 233                 logger.addHandler(file_handler)
 234                 logger.debug("moving logs to '%s'", global_config["log_file"])
 235                 #remove initial strema handler
 236                 logging.root.removeHandler(logging.root.handlers[0])
 237             except IOError as e:
 238                 raise LoadConfigurationException("Cannot open logging file '{}': {}. Check folder exist and permissions".format(global_config["log_file"], str(e)) )
 239         #logging.basicConfig(level = getattr(logging, global_config.get('log_level',"debug")))
 240         logger.setLevel(getattr(logging, global_config['log_level']))
 241
 242         # Initialize DB connection
 243         mydb = nfvo_db.nfvo_db(log_level=global_config["log_level_db"]);
 244         if mydb.connect(global_config['db_host'], global_config['db_user'], global_config['db_passwd'], global_config['db_name']) == -1:
 245             logger.critical("Cannot connect to database %s at %s@%s", global_config['db_name'], global_config['db_user'], global_config['db_host'])
 246             exit(-1)
 247         r = mydb.get_db_version()
 248         if r[0]<0:
 249             logger.critical("DATABASE is not a MANO one or it is a '0.0' version. Try to upgrade to version '%s' with './database_utils/migrate_mano_db.sh'", database_version)
 250             exit(-1)
 251         elif r[1]!=database_version:
 252             logger.critical("DATABASE wrong version '%s'. Try to upgrade/downgrade to version '%s' with './database_utils/migrate_mano_db.sh'", r[1], database_version)
 253             exit(-1)
 254
 255         nfvo.global_config=global_config
 256
 257         httpthread = httpserver.httpserver(mydb, False, global_config['http_host'], global_config['http_port'])
 258
 259         httpthread.start()
 260         if 'http_admin_port' in global_config:
 261             httpthreadadmin = httpserver.httpserver(mydb, True, global_config['http_host'], global_config['http_admin_port'])
 262             httpthreadadmin.start()
 263         time.sleep(1)
 264         logger.info('Waiting for http clients')
 265         print('Waiting for http clients')
 266         print('openmanod ready')
 267         print('====================')
 268         time.sleep(20)
 269         sys.stdout.flush()
 270
 271         #TODO: Interactive console must be implemented here instead of join or sleep
 272
 273         #httpthread.join()
 274         #if 'http_admin_port' in global_config:
 275         #    httpthreadadmin.join()
 276         while True:
 277             time.sleep(86400)
 278         for thread in global_config["console_thread"]:
 279             thread.terminate = True
 280
 281     except KeyboardInterrupt as e:
 282         logger.info(str(e))
 283     except SystemExit:
 284         pass
 285     except getopt.GetoptError as e:
 286         logger.critical(str(e)) # will print something like "option -a not recognized"
 287         #usage()
 288         exit(-1)
 289     except LoadConfigurationException as e:
 290         logger.critical(str(e))
 291         exit(-1)
 292