osm_nbi/validation.py

   1 # -*- coding: utf-8 -*-
   2
   3 from jsonschema import validate as js_v, exceptions as js_e
   4
   5 __author__ = "Alfonso Tierno <alfonso.tiernosepulveda@telefonica.com>"
   6 __version__ = "0.1"
   7 version_date = "Mar 2018"
   8
   9 """
  10 Validator of input data using JSON schemas for those items that not contains an  OSM yang information model
  11 """
  12
  13 # Basis schemas
  14 patern_name = "^[ -~]+$"
  15 passwd_schema = {"type": "string", "minLength": 1, "maxLength": 60}
  16 nameshort_schema = {"type": "string", "minLength": 1, "maxLength": 60, "pattern": "^[^,;()'\"]+$"}
  17 name_schema = {"type": "string", "minLength": 1, "maxLength": 255, "pattern": "^[^,;()'\"]+$"}
  18 string_schema = {"type": "string", "minLength": 1, "maxLength": 255}
  19 xml_text_schema = {"type": "string", "minLength": 1, "maxLength": 1000, "pattern": "^[^']+$"}
  20 description_schema = {"type": ["string", "null"], "maxLength": 255, "pattern": "^[^'\"]+$"}
  21 id_schema_fake = {"type": "string", "minLength": 2, "maxLength": 36}
  22 bool_schema = {"type": "boolean"}
  23 null_schema = {"type": "null"}
  24 # "pattern": "^[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{12}$"
  25 id_schema = {"type": "string", "pattern": "^[a-fA-F0-9]{8}(-[a-fA-F0-9]{4}){3}-[a-fA-F0-9]{12}$"}
  26 time_schema = {"type": "string", "pattern": "^[0-9]{4}-[0-1][0-9]-[0-3][0-9]T[0-2][0-9]([0-5]:){2}"}
  27 pci_schema = {"type": "string", "pattern": "^[0-9a-fA-F]{4}(:[0-9a-fA-F]{2}){2}\.[0-9a-fA-F]$"}
  28 http_schema = {"type": "string", "pattern": "^https?://[^'\"=]+$"}
  29 bandwidth_schema = {"type": "string", "pattern": "^[0-9]+ *([MG]bps)?$"}
  30 memory_schema = {"type": "string", "pattern": "^[0-9]+ *([MG]i?[Bb])?$"}
  31 integer0_schema = {"type": "integer", "minimum": 0}
  32 integer1_schema = {"type": "integer", "minimum": 1}
  33 path_schema = {"type": "string", "pattern": "^(\.){0,2}(/[^/\"':{}\(\)]+)+$"}
  34 vlan_schema = {"type": "integer", "minimum": 1, "maximum": 4095}
  35 vlan1000_schema = {"type": "integer", "minimum": 1000, "maximum": 4095}
  36 mac_schema = {"type": "string",
  37               "pattern": "^[0-9a-fA-F][02468aceACE](:[0-9a-fA-F]{2}){5}$"}  # must be unicast: LSB bit of MSB byte ==0
  38 # mac_schema={"type":"string", "pattern":"^([0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$"}
  39 ip_schema = {"type": "string",
  40              "pattern": "^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$"}
  41 ip_prefix_schema = {"type": "string",
  42                     "pattern": "^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}"
  43                                "(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)/(30|[12]?[0-9])$"}
  44 port_schema = {"type": "integer", "minimum": 1, "maximum": 65534}
  45 object_schema = {"type": "object"}
  46 schema_version_2 = {"type": "integer", "minimum": 2, "maximum": 2}
  47 # schema_version_string={"type":"string","enum": ["0.1", "2", "0.2", "3", "0.3"]}
  48 log_level_schema = {"type": "string", "enum": ["DEBUG", "INFO", "WARNING", "ERROR", "CRITICAL"]}
  49 checksum_schema = {"type": "string", "pattern": "^[0-9a-fA-F]{32}$"}
  50 size_schema = {"type": "integer", "minimum": 1, "maximum": 100}
  51
  52 ns_instantiate_vdu = {
  53     "title": "ns action instantiate input schema for vdu",
  54     "$schema": "http://json-schema.org/draft-04/schema#",
  55     "type": "object",
  56     "properties": {
  57         "id": name_schema,
  58         "volume": {
  59             "type": "array",
  60             "minItems": 1,
  61             "items": {
  62                 "type": "object",
  63                 "properties": {
  64                     "name": name_schema,
  65                     "vim-volume-id": name_schema,
  66                 },
  67                 "required": ["name", "vim-volume-id"],
  68                 "additionalProperties": False
  69             }
  70         },
  71         "interface": {
  72             "type": "array",
  73             "minItems": 1,
  74             "items": {
  75                 "type": "object",
  76                 "properties": {
  77                     "name": name_schema,
  78                     "ip-address": ip_schema,
  79                     "mac-address": mac_schema,
  80                     "floating-ip-required": bool_schema,
  81                 },
  82                 "required": ["name"],
  83                 "additionalProperties": False
  84             }
  85         }
  86     },
  87     "required": ["id"],
  88     "additionalProperties": False
  89 }
  90
  91 ip_profile_dns_schema = {
  92     "type": "array",
  93     "minItems": 1,
  94     "items": {
  95         "type": "object",
  96         "properties": {
  97             "address": ip_schema,
  98         },
  99         "required": ["address"],
 100         "additionalProperties": False
 101     }
 102 }
 103
 104 ip_profile_dhcp_schema = {
 105     "type": "object",
 106     "properties": {
 107         "enabled": {"type": "boolean"},
 108         "count": integer1_schema,
 109         "start-address": ip_schema
 110     },
 111     "additionalProperties": False,
 112 }
 113
 114 ip_profile_schema = {
 115     "title": "ip profile validation schame",
 116     "$schema": "http://json-schema.org/draft-04/schema#",
 117     "type": "object",
 118     "properties": {
 119         "ip-version": {"enum": ["ipv4", "ipv6"]},
 120         "subnet-address": ip_prefix_schema,
 121         "gateway-address": ip_schema,
 122         "dns-server": ip_profile_dns_schema,
 123         "dhcp-params": ip_profile_dhcp_schema,
 124     }
 125 }
 126
 127 ip_profile_update_schema = {
 128     "title": "ip profile validation schame",
 129     "$schema": "http://json-schema.org/draft-04/schema#",
 130     "type": "object",
 131     "properties": {
 132         "ip-version": {"enum": ["ipv4", "ipv6"]},
 133         "subnet-address": {"oneOf": [null_schema, ip_prefix_schema]},
 134         "gateway-address": {"oneOf": [null_schema, ip_schema]},
 135         "dns-server": {"oneOf": [null_schema, ip_profile_dns_schema]},
 136
 137         "dhcp-params": {"oneOf": [null_schema, ip_profile_dhcp_schema]},
 138     },
 139     "additionalProperties": False
 140 }
 141
 142 ns_instantiate_internal_vld = {
 143     "title": "ns action instantiate input schema for vdu",
 144     "$schema": "http://json-schema.org/draft-04/schema#",
 145     "type": "object",
 146     "properties": {
 147         "name": name_schema,
 148         "vim-network-name": name_schema,
 149         "ip-profile": ip_profile_update_schema,
 150         "internal-connection-point": {
 151             "type": "array",
 152             "minItems": 1,
 153             "items": {
 154                 "type": "object",
 155                 "properties": {
 156                     "id-ref": name_schema,
 157                     "ip-address": ip_schema,
 158                 },
 159                 "required": ["id-ref", "ip-address"],
 160                 "additionalProperties": False
 161             },
 162         }
 163     },
 164     "required": ["name"],
 165     "minProperties": 2,
 166     "additionalProperties": False
 167 }
 168
 169 ns_instantiate = {
 170     "title": "ns action instantiate input schema",
 171     "$schema": "http://json-schema.org/draft-04/schema#",
 172     "type": "object",
 173     "properties": {
 174         "nsName": name_schema,
 175         "nsDescription": {"oneOf": [description_schema, {"type": "null"}]},
 176         "nsdId": id_schema,
 177         "vimAccountId": id_schema,
 178         "ssh_keys": {"type": "string"},
 179         "nsr_id": id_schema,
 180         "vnf": {
 181             "type": "array",
 182             "minItems": 1,
 183             "items": {
 184                 "type": "object",
 185                 "properties": {
 186                     "member-vnf-index": name_schema,
 187                     "vimAccountId": id_schema,
 188                     "vdu": {
 189                         "type": "array",
 190                         "minItems": 1,
 191                         "items": ns_instantiate_vdu,
 192                     },
 193                     "internal-vld": {
 194                         "type": "array",
 195                         "minItems": 1,
 196                         "items": ns_instantiate_internal_vld
 197                     }
 198                 },
 199                 "required": ["member-vnf-index"],
 200                 "minProperties": 2,
 201                 "additionalProperties": False
 202             }
 203         },
 204         "vld": {
 205             "type": "array",
 206             "minItems": 1,
 207             "items": {
 208                 "type": "object",
 209                 "properties": {
 210                     "name": string_schema,
 211                     "vim-network-name": {"OneOf": [string_schema, object_schema]},
 212                     "ip-profile": object_schema,
 213                 },
 214                 "required": ["name"],
 215                 "additionalProperties": False
 216             }
 217         },
 218     },
 219     "required": ["nsName", "nsdId", "vimAccountId"],
 220     "additionalProperties": False
 221 }
 222
 223 ns_action = {   # TODO for the moment it is only contemplated the vnfd primitive execution
 224     "title": "ns action input schema",
 225     "$schema": "http://json-schema.org/draft-04/schema#",
 226     "type": "object",
 227     "properties": {
 228         "member_vnf_index": name_schema,
 229         "vnf_member_index": name_schema,  # TODO for backward compatibility. To remove in future
 230         "primitive": name_schema,
 231         "primitive_params": {"type": "object"},
 232     },
 233     "required": ["primitive", "primitive_params"],   # TODO add member_vnf_index
 234     "additionalProperties": False
 235 }
 236 ns_scale = {   # TODO for the moment it is only VDU-scaling
 237     "title": "ns scale input schema",
 238     "$schema": "http://json-schema.org/draft-04/schema#",
 239     "type": "object",
 240     "properties": {
 241         "scaleType": {"enum": ["SCALE_VNF"]},
 242         "scaleVnfData": {
 243             "type": "object",
 244             "properties": {
 245                 "vnfInstanceId": name_schema,
 246                 "scaleVnfType": {"enum": ["SCALE_OUT", 'SCALE_IN']},
 247                 "scaleByStepData": {
 248                     "type": "object",
 249                     "properties": {
 250                         "scaling-group-descriptor": name_schema,
 251                         "member-vnf-index": name_schema,
 252                         "scaling-policy": name_schema,
 253                     },
 254                     "required": ["scaling-group-descriptor", "member-vnf-index"],
 255                     "additionalProperties": False
 256                 },
 257             },
 258             "required": ["scaleVnfType", "scaleByStepData"],  # vnfInstanceId
 259             "additionalProperties": False
 260         },
 261         "scaleTime": time_schema,
 262     },
 263     "required": ["scaleType", "scaleVnfData"],
 264     "additionalProperties": False
 265 }
 266
 267
 268 schema_version = {"type": "string", "enum": ["1.0"]}
 269 vim_account_edit_schema = {
 270     "title": "vim_account edit input schema",
 271     "$schema": "http://json-schema.org/draft-04/schema#",
 272     "type": "object",
 273     "properties": {
 274         "name": name_schema,
 275         "description": description_schema,
 276         "type": nameshort_schema,  # currently "openvim" or "openstack", can be enlarged with plugins
 277         "vim": name_schema,
 278         "datacenter": name_schema,
 279         "vim_url": description_schema,
 280         "vim_url_admin": description_schema,
 281         "vim_tenant": name_schema,
 282         "vim_tenant_name": name_schema,
 283         "vim_username": nameshort_schema,
 284         "vim_password": nameshort_schema,
 285         "config": {"type": "object"}
 286     },
 287     "additionalProperties": False
 288 }
 289 schema_type = {"type": "string"}
 290
 291 vim_account_new_schema = {
 292     "title": "vim_account creation input schema",
 293     "$schema": "http://json-schema.org/draft-04/schema#",
 294     "type": "object",
 295     "properties": {
 296         "schema_version": schema_version,
 297         "schema_type": schema_type,
 298         "name": name_schema,
 299         "description": description_schema,
 300         "vim": name_schema,
 301         "datacenter": name_schema,
 302         "vim_type": {"enum": ["openstack", "openvim", "vmware", "opennebula", "aws"]},
 303         "vim_url": description_schema,
 304         # "vim_url_admin": description_schema,
 305         # "vim_tenant": name_schema,
 306         "vim_tenant_name": name_schema,
 307         "vim_user": nameshort_schema,
 308         "vim_password": nameshort_schema,
 309         "config": {"type": "object"}
 310     },
 311     "required": ["name", "vim_url", "vim_type", "vim_user", "vim_password", "vim_tenant_name"],
 312     "additionalProperties": False
 313 }
 314
 315
 316 sdn_properties = {
 317     "name": name_schema,
 318     "description": description_schema,
 319     "dpid": {"type": "string", "pattern": "^[0-9a-fA-F]{2}(:[0-9a-fA-F]{2}){7}$"},
 320     "ip": ip_schema,
 321     "port": port_schema,
 322     "type": {"type": "string", "enum": ["opendaylight", "floodlight", "onos"]},
 323     "version": {"type": "string", "minLength": 1, "maxLength": 12},
 324     "user": nameshort_schema,
 325     "password": passwd_schema
 326 }
 327 sdn_new_schema = {
 328     "title": "sdn controller information schema",
 329     "$schema": "http://json-schema.org/draft-04/schema#",
 330     "type": "object",
 331     "properties": sdn_properties,
 332     "required": ["name", "port", 'ip', 'dpid', 'type'],
 333     "additionalProperties": False
 334 }
 335 sdn_edit_schema = {
 336     "title": "sdn controller update information schema",
 337     "$schema": "http://json-schema.org/draft-04/schema#",
 338     "type": "object",
 339     "properties": sdn_properties,
 340     # "required": ["name", "port", 'ip', 'dpid', 'type'],
 341     "additionalProperties": False
 342 }
 343 sdn_port_mapping_schema = {
 344     "$schema": "http://json-schema.org/draft-04/schema#",
 345     "title": "sdn port mapping information schema",
 346     "type": "array",
 347     "items": {
 348         "type": "object",
 349         "properties": {
 350             "compute_node": nameshort_schema,
 351             "ports": {
 352                 "type": "array",
 353                 "items": {
 354                     "type": "object",
 355                     "properties": {
 356                         "pci": pci_schema,
 357                         "switch_port": nameshort_schema,
 358                         "switch_mac": mac_schema
 359                     },
 360                     "required": ["pci"]
 361                 }
 362             }
 363         },
 364         "required": ["compute_node", "ports"]
 365     }
 366 }
 367 sdn_external_port_schema = {
 368     "$schema": "http://json-schema.org/draft-04/schema#",
 369     "title": "External port ingformation",
 370     "type": "object",
 371     "properties": {
 372         "port": {"type": "string", "minLength": 1, "maxLength": 60},
 373         "vlan": vlan_schema,
 374         "mac": mac_schema
 375     },
 376     "required": ["port"]
 377 }
 378
 379
 380 nbi_new_input_schemas = {
 381     "vim_accounts": vim_account_new_schema,
 382     "sdns": sdn_new_schema,
 383     "ns_instantiate": ns_instantiate,
 384     "ns_action": ns_action,
 385     "ns_scale": ns_scale
 386 }
 387
 388 nbi_edit_input_schemas = {
 389     "vim_accounts": vim_account_edit_schema,
 390     "sdns": sdn_edit_schema
 391 }
 392
 393
 394 class ValidationError(Exception):
 395     pass
 396
 397
 398 def validate_input(indata, item, new=True):
 399     """
 400     Validates input data agains json schema
 401     :param indata: user input data. Should be a dictionary
 402     :param item: can be users, projects, vims, sdns, ns_xxxxx
 403     :param new: True if the validation is for creating or False if it is for editing
 404     :return: None if ok, raises ValidationError exception otherwise
 405     """
 406     try:
 407         if new:
 408             schema_to_use = nbi_new_input_schemas.get(item)
 409         else:
 410             schema_to_use = nbi_edit_input_schemas.get(item)
 411         if schema_to_use:
 412             js_v(indata, schema_to_use)
 413         return None
 414     except js_e.ValidationError as e:
 415         if e.path:
 416             error_pos = "at '" + ":".join(map(str, e.path)) + "'"
 417         else:
 418             error_pos = ""
 419         raise ValidationError("Format error {} '{}' ".format(error_pos, e.message))