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": "^[^,;()'\"]+$"}
  18 xml_text_schema = {"type": "string", "minLength": 1, "maxLength": 1000, "pattern": "^[^']+$"}
  19 description_schema = {"type": ["string", "null"], "maxLength": 255, "pattern": "^[^'\"]+$"}
  20 id_schema_fake = {"type": "string", "minLength": 2,
  21                   "maxLength": 36}  # "pattern": "^[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{12}$"
  22 id_schema = {"type": "string", "pattern": "^[a-fA-F0-9]{8}(-[a-fA-F0-9]{4}){3}-[a-fA-F0-9]{12}$"}
  23 pci_schema = {"type": "string", "pattern": "^[0-9a-fA-F]{4}(:[0-9a-fA-F]{2}){2}\.[0-9a-fA-F]$"}
  24 http_schema = {"type": "string", "pattern": "^https?://[^'\"=]+$"}
  25 bandwidth_schema = {"type": "string", "pattern": "^[0-9]+ *([MG]bps)?$"}
  26 memory_schema = {"type": "string", "pattern": "^[0-9]+ *([MG]i?[Bb])?$"}
  27 integer0_schema = {"type": "integer", "minimum": 0}
  28 integer1_schema = {"type": "integer", "minimum": 1}
  29 path_schema = {"type": "string", "pattern": "^(\.){0,2}(/[^/\"':{}\(\)]+)+$"}
  30 vlan_schema = {"type": "integer", "minimum": 1, "maximum": 4095}
  31 vlan1000_schema = {"type": "integer", "minimum": 1000, "maximum": 4095}
  32 mac_schema = {"type": "string",
  33               "pattern": "^[0-9a-fA-F][02468aceACE](:[0-9a-fA-F]{2}){5}$"}  # must be unicast: LSB bit of MSB byte ==0
  34 # mac_schema={"type":"string", "pattern":"^([0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$"}
  35 ip_schema = {"type": "string",
  36              "pattern": "^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$"}
  37 ip_prefix_schema = {"type": "string",
  38                     "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]?)/(30|[12]?[0-9])$"}
  39 port_schema = {"type": "integer", "minimum": 1, "maximum": 65534}
  40 object_schema = {"type": "object"}
  41 schema_version_2 = {"type": "integer", "minimum": 2, "maximum": 2}
  42 # schema_version_string={"type":"string","enum": ["0.1", "2", "0.2", "3", "0.3"]}
  43 log_level_schema = {"type": "string", "enum": ["DEBUG", "INFO", "WARNING", "ERROR", "CRITICAL"]}
  44 checksum_schema = {"type": "string", "pattern": "^[0-9a-fA-F]{32}$"}
  45 size_schema = {"type": "integer", "minimum": 1, "maximum": 100}
  46
  47
  48 ns_instantiate = {
  49     "title": "ns action instantiate input schema",
  50     "$schema": "http://json-schema.org/draft-04/schema#",
  51     "type": "object",
  52 }
  53 ns_action = {   # TODO for the moment it is only contemplated the vnfd primitive execution
  54     "title": "ns action update input schema",
  55     "$schema": "http://json-schema.org/draft-04/schema#",
  56     "type": "object",
  57     "properties": {
  58         "vnf_member_index": name_schema,
  59         "primitive": name_schema,
  60         "primitive_params": {"type": "object"},
  61     },
  62     "required": ["vnf_member_index", "primitive", "primitive_params"],
  63     "additionalProperties": False
  64 }
  65
  66
  67 schema_version = {"type": "string", "enum": ["1.0"]}
  68 schema_type = {"type": "string"}
  69
  70 vim_new_schema = {
  71     "title": "vims new user input schema",
  72     "$schema": "http://json-schema.org/draft-04/schema#",
  73     "type": "object",
  74     "properties": {
  75         "schema_version": schema_version,
  76         "schema_type": schema_type,
  77         "name": name_schema,
  78         "description": description_schema,
  79         "vim_type": {"enum": ["openstack", "openvim", "vmware", "opennebula", "aws"]},
  80         "vim_url": description_schema,
  81         # "vim_url_admin": description_schema,
  82         # "vim_tenant": name_schema,
  83         "vim_tenant_name": name_schema,
  84         "vim_user": nameshort_schema,
  85         "vim_password": nameshort_schema,
  86         "config": {"type": "object"}
  87     },
  88     "required": ["name", "vim_url", "vim_type", "vim_user", "vim_password", "vim_tenant_name"],
  89     "additionalProperties": False
  90 }
  91 vim_edit_schema = {
  92     "title": "datacenter edit nformation schema",
  93     "$schema": "http://json-schema.org/draft-04/schema#",
  94     "type": "object",
  95     "properties": {
  96         "name": name_schema,
  97         "description": description_schema,
  98         "type": nameshort_schema,  # currently "openvim" or "openstack", can be enlarged with plugins
  99         "vim_url": description_schema,
 100         "vim_url_admin": description_schema,
 101         "vim_tenant": name_schema,
 102         "vim_tenant_name": name_schema,
 103         "vim_username": nameshort_schema,
 104         "vim_password": nameshort_schema,
 105         "config": {"type": "object"}
 106     },
 107     "additionalProperties": False
 108 }
 109
 110
 111 sdn_properties = {
 112     "name": name_schema,
 113     "dpid": {"type": "string", "pattern": "^[0-9a-fA-F]{2}(:[0-9a-fA-F]{2}){7}$"},
 114     "ip": ip_schema,
 115     "port": port_schema,
 116     "type": {"type": "string", "enum": ["opendaylight", "floodlight", "onos"]},
 117     "version": {"type": "string", "minLength": 1, "maxLength": 12},
 118     "user": nameshort_schema,
 119     "password": passwd_schema
 120 }
 121 sdn_new_schema = {
 122     "title": "sdn controller information schema",
 123     "$schema": "http://json-schema.org/draft-04/schema#",
 124     "type": "object",
 125     "properties": sdn_properties,
 126     "required": ["name", "port", 'ip', 'dpid', 'type'],
 127     "additionalProperties": False
 128 }
 129 sdn_edit_schema = {
 130     "title": "sdn controller update information schema",
 131     "$schema": "http://json-schema.org/draft-04/schema#",
 132     "type": "object",
 133     "properties": sdn_properties,
 134     "required": ["name", "port", 'ip', 'dpid', 'type'],
 135     "additionalProperties": False
 136 }
 137 sdn_port_mapping_schema = {
 138     "$schema": "http://json-schema.org/draft-04/schema#",
 139     "title": "sdn port mapping information schema",
 140     "type": "array",
 141     "items": {
 142         "type": "object",
 143         "properties": {
 144             "compute_node": nameshort_schema,
 145             "ports": {
 146                 "type": "array",
 147                 "items": {
 148                     "type": "object",
 149                     "properties": {
 150                         "pci": pci_schema,
 151                         "switch_port": nameshort_schema,
 152                         "switch_mac": mac_schema
 153                     },
 154                     "required": ["pci"]
 155                 }
 156             }
 157         },
 158         "required": ["compute_node", "ports"]
 159     }
 160 }
 161 sdn_external_port_schema = {
 162     "$schema": "http://json-schema.org/draft-04/schema#",
 163     "title": "External port ingformation",
 164     "type": "object",
 165     "properties": {
 166         "port": {"type": "string", "minLength": 1, "maxLength": 60},
 167         "vlan": vlan_schema,
 168         "mac": mac_schema
 169     },
 170     "required": ["port"]
 171 }
 172
 173
 174 nbi_new_input_schemas = {
 175     "vims": vim_new_schema,
 176     "sdns": sdn_new_schema,
 177     "ns_instantiate": ns_instantiate,
 178     "ns_action": ns_action,
 179 }
 180
 181 nbi_edit_input_schemas = {
 182     "vims": vim_edit_schema,
 183     "sdns": sdn_edit_schema
 184 }
 185
 186
 187 class ValidationError(Exception):
 188     pass
 189
 190
 191 def validate_input(indata, item, new=True):
 192     """
 193     Validates input data agains json schema
 194     :param indata: user input data. Should be a dictionary
 195     :param item: can be users, projects, vims, sdns, ns_xxxxx
 196     :param new: True if the validation is for creating or False if it is for editing
 197     :return: None if ok, raises ValidationError exception otherwise
 198     """
 199     try:
 200         if new:
 201             schema_to_use = nbi_new_input_schemas.get(item)
 202         else:
 203             schema_to_use = nbi_edit_input_schemas.get(item)
 204         if schema_to_use:
 205             js_v(indata, schema_to_use)
 206         return None
 207     except js_e.ValidationError as e:
 208         if e.path:
 209             error_pos = "at '" + ":".join(e.path) + "'"
 210         else:
 211             error_pos = ""
 212         raise ValidationError("Format error {} '{}' ".format(error_pos, e))