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| 1 # Copyright (c) 2011 Blue Pines Technologies LLC, Brad Carleton |
| 2 # www.bluepines.org |
| 3 # Copyright (c) 2012 42 Lines Inc., Jim Browne |
| 4 # All rights reserved. |
| 5 # |
| 6 # Permission is hereby granted, free of charge, to any person obtaining a |
| 7 # copy of this software and associated documentation files (the |
| 8 # "Software"), to deal in the Software without restriction, including |
| 9 # without limitation the rights to use, copy, modify, merge, publish, dis- |
| 10 # tribute, sublicense, and/or sell copies of the Software, and to permit |
| 11 # persons to whom the Software is furnished to do so, subject to the fol- |
| 12 # lowing conditions: |
| 13 # |
| 14 # The above copyright notice and this permission notice shall be included |
| 15 # in all copies or substantial portions of the Software. |
| 16 # |
| 17 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| 18 # OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL- |
| 19 # ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT |
| 20 # SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
| 21 # WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 22 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| 23 # IN THE SOFTWARE. |
| 24 |
| 25 default_ttl = 60 |
| 26 |
| 27 import copy |
| 28 from boto.exception import TooManyRecordsException |
| 29 from boto.route53.record import ResourceRecordSets |
| 30 from boto.route53.status import Status |
| 31 |
| 32 |
| 33 class Zone(object): |
| 34 """ |
| 35 A Route53 Zone. |
| 36 |
| 37 :ivar Route53Connection route53connection |
| 38 :ivar str Id: The ID of the hosted zone. |
| 39 """ |
| 40 def __init__(self, route53connection, zone_dict): |
| 41 self.route53connection = route53connection |
| 42 for key in zone_dict: |
| 43 if key == 'Id': |
| 44 self.id = zone_dict['Id'].replace('/hostedzone/', '') |
| 45 else: |
| 46 self.__setattr__(key.lower(), zone_dict[key]) |
| 47 |
| 48 def __repr__(self): |
| 49 return '<Zone:%s>' % self.name |
| 50 |
| 51 def _commit(self, changes): |
| 52 """ |
| 53 Commit a set of changes and return the ChangeInfo portion of |
| 54 the response. |
| 55 |
| 56 :type changes: ResourceRecordSets |
| 57 :param changes: changes to be committed |
| 58 """ |
| 59 response = changes.commit() |
| 60 return response['ChangeResourceRecordSetsResponse']['ChangeInfo'] |
| 61 |
| 62 def _new_record(self, changes, resource_type, name, value, ttl, identifier, |
| 63 comment=""): |
| 64 """ |
| 65 Add a CREATE change record to an existing ResourceRecordSets |
| 66 |
| 67 :type changes: ResourceRecordSets |
| 68 :param changes: change set to append to |
| 69 |
| 70 :type name: str |
| 71 :param name: The name of the resource record you want to |
| 72 perform the action on. |
| 73 |
| 74 :type resource_type: str |
| 75 :param resource_type: The DNS record type |
| 76 |
| 77 :param value: Appropriate value for resource_type |
| 78 |
| 79 :type ttl: int |
| 80 :param ttl: The resource record cache time to live (TTL), in seconds. |
| 81 |
| 82 :type identifier: tuple |
| 83 :param identifier: A tuple for setting WRR or LBR attributes. Valid |
| 84 forms are: |
| 85 |
| 86 * (str, int): WRR record [e.g. ('foo',10)] |
| 87 * (str, str): LBR record [e.g. ('foo','us-east-1') |
| 88 |
| 89 :type comment: str |
| 90 :param comment: A comment that will be stored with the change. |
| 91 """ |
| 92 weight = None |
| 93 region = None |
| 94 if identifier is not None: |
| 95 try: |
| 96 int(identifier[1]) |
| 97 weight = identifier[1] |
| 98 identifier = identifier[0] |
| 99 except: |
| 100 region = identifier[1] |
| 101 identifier = identifier[0] |
| 102 change = changes.add_change("CREATE", name, resource_type, ttl, |
| 103 identifier=identifier, weight=weight, |
| 104 region=region) |
| 105 if type(value) in [list, tuple, set]: |
| 106 for record in value: |
| 107 change.add_value(record) |
| 108 else: |
| 109 change.add_value(value) |
| 110 |
| 111 def add_record(self, resource_type, name, value, ttl=60, identifier=None, |
| 112 comment=""): |
| 113 """ |
| 114 Add a new record to this Zone. See _new_record for parameter |
| 115 documentation. Returns a Status object. |
| 116 """ |
| 117 changes = ResourceRecordSets(self.route53connection, self.id, comment) |
| 118 self._new_record(changes, resource_type, name, value, ttl, identifier, |
| 119 comment) |
| 120 return Status(self.route53connection, self._commit(changes)) |
| 121 |
| 122 def update_record(self, old_record, new_value, new_ttl=None, |
| 123 new_identifier=None, comment=""): |
| 124 """ |
| 125 Update an existing record in this Zone. Returns a Status object. |
| 126 |
| 127 :type old_record: ResourceRecord |
| 128 :param old_record: A ResourceRecord (e.g. returned by find_records) |
| 129 |
| 130 See _new_record for additional parameter documentation. |
| 131 """ |
| 132 new_ttl = new_ttl or default_ttl |
| 133 record = copy.copy(old_record) |
| 134 changes = ResourceRecordSets(self.route53connection, self.id, comment) |
| 135 changes.add_change_record("DELETE", record) |
| 136 self._new_record(changes, record.type, record.name, |
| 137 new_value, new_ttl, new_identifier, comment) |
| 138 return Status(self.route53connection, self._commit(changes)) |
| 139 |
| 140 def delete_record(self, record, comment=""): |
| 141 """ |
| 142 Delete one or more records from this Zone. Returns a Status object. |
| 143 |
| 144 :param record: A ResourceRecord (e.g. returned by |
| 145 find_records) or list, tuple, or set of ResourceRecords. |
| 146 |
| 147 :type comment: str |
| 148 :param comment: A comment that will be stored with the change. |
| 149 """ |
| 150 changes = ResourceRecordSets(self.route53connection, self.id, comment) |
| 151 if type(record) in [list, tuple, set]: |
| 152 for r in record: |
| 153 changes.add_change_record("DELETE", r) |
| 154 else: |
| 155 changes.add_change_record("DELETE", record) |
| 156 return Status(self.route53connection, self._commit(changes)) |
| 157 |
| 158 def add_cname(self, name, value, ttl=None, identifier=None, comment=""): |
| 159 """ |
| 160 Add a new CNAME record to this Zone. See _new_record for |
| 161 parameter documentation. Returns a Status object. |
| 162 """ |
| 163 ttl = ttl or default_ttl |
| 164 name = self.route53connection._make_qualified(name) |
| 165 value = self.route53connection._make_qualified(value) |
| 166 return self.add_record(resource_type='CNAME', |
| 167 name=name, |
| 168 value=value, |
| 169 ttl=ttl, |
| 170 identifier=identifier, |
| 171 comment=comment) |
| 172 |
| 173 def add_a(self, name, value, ttl=None, identifier=None, comment=""): |
| 174 """ |
| 175 Add a new A record to this Zone. See _new_record for |
| 176 parameter documentation. Returns a Status object. |
| 177 """ |
| 178 ttl = ttl or default_ttl |
| 179 name = self.route53connection._make_qualified(name) |
| 180 return self.add_record(resource_type='A', |
| 181 name=name, |
| 182 value=value, |
| 183 ttl=ttl, |
| 184 identifier=identifier, |
| 185 comment=comment) |
| 186 |
| 187 def add_mx(self, name, records, ttl=None, identifier=None, comment=""): |
| 188 """ |
| 189 Add a new MX record to this Zone. See _new_record for |
| 190 parameter documentation. Returns a Status object. |
| 191 """ |
| 192 ttl = ttl or default_ttl |
| 193 records = self.route53connection._make_qualified(records) |
| 194 return self.add_record(resource_type='MX', |
| 195 name=name, |
| 196 value=records, |
| 197 ttl=ttl, |
| 198 identifier=identifier, |
| 199 comment=comment) |
| 200 |
| 201 def find_records(self, name, type, desired=1, all=False, identifier=None): |
| 202 """ |
| 203 Search this Zone for records that match given parameters. |
| 204 Returns None if no results, a ResourceRecord if one result, or |
| 205 a ResourceRecordSets if more than one result. |
| 206 |
| 207 :type name: str |
| 208 :param name: The name of the records should match this parameter |
| 209 |
| 210 :type type: str |
| 211 :param type: The type of the records should match this parameter |
| 212 |
| 213 :type desired: int |
| 214 :param desired: The number of desired results. If the number of |
| 215 matching records in the Zone exceeds the value of this parameter, |
| 216 throw TooManyRecordsException |
| 217 |
| 218 :type all: Boolean |
| 219 :param all: If true return all records that match name, type, and |
| 220 identifier parameters |
| 221 |
| 222 :type identifier: Tuple |
| 223 :param identifier: A tuple specifying WRR or LBR attributes. Valid |
| 224 forms are: |
| 225 |
| 226 * (str, int): WRR record [e.g. ('foo',10)] |
| 227 * (str, str): LBR record [e.g. ('foo','us-east-1') |
| 228 |
| 229 """ |
| 230 name = self.route53connection._make_qualified(name) |
| 231 returned = self.route53connection.get_all_rrsets(self.id, name=name, |
| 232 type=type) |
| 233 |
| 234 # name/type for get_all_rrsets sets the starting record; they |
| 235 # are not a filter |
| 236 results = [r for r in returned if r.name == name and r.type == type] |
| 237 |
| 238 weight = None |
| 239 region = None |
| 240 if identifier is not None: |
| 241 try: |
| 242 int(identifier[1]) |
| 243 weight = identifier[1] |
| 244 except: |
| 245 region = identifier[1] |
| 246 |
| 247 if weight is not None: |
| 248 results = [r for r in results if (r.weight == weight and |
| 249 r.identifier == identifier[0])] |
| 250 if region is not None: |
| 251 results = [r for r in results if (r.region == region and |
| 252 r.identifier == identifier[0])] |
| 253 |
| 254 if ((not all) and (len(results) > desired)): |
| 255 message = "Search: name %s type %s" % (name, type) |
| 256 message += "\nFound: " |
| 257 message += ", ".join(["%s %s %s" % (r.name, r.type, r.to_print()) |
| 258 for r in results]) |
| 259 raise TooManyRecordsException(message) |
| 260 elif len(results) > 1: |
| 261 return results |
| 262 elif len(results) == 1: |
| 263 return results[0] |
| 264 else: |
| 265 return None |
| 266 |
| 267 def get_cname(self, name, all=False): |
| 268 """ |
| 269 Search this Zone for CNAME records that match name. |
| 270 |
| 271 Returns a ResourceRecord. |
| 272 |
| 273 If there is more than one match return all as a |
| 274 ResourceRecordSets if all is True, otherwise throws |
| 275 TooManyRecordsException. |
| 276 """ |
| 277 return self.find_records(name, 'CNAME', all=all) |
| 278 |
| 279 def get_a(self, name, all=False): |
| 280 """ |
| 281 Search this Zone for A records that match name. |
| 282 |
| 283 Returns a ResourceRecord. |
| 284 |
| 285 If there is more than one match return all as a |
| 286 ResourceRecordSets if all is True, otherwise throws |
| 287 TooManyRecordsException. |
| 288 """ |
| 289 return self.find_records(name, 'A', all=all) |
| 290 |
| 291 def get_mx(self, name, all=False): |
| 292 """ |
| 293 Search this Zone for MX records that match name. |
| 294 |
| 295 Returns a ResourceRecord. |
| 296 |
| 297 If there is more than one match return all as a |
| 298 ResourceRecordSets if all is True, otherwise throws |
| 299 TooManyRecordsException. |
| 300 """ |
| 301 return self.find_records(name, 'MX', all=all) |
| 302 |
| 303 def update_cname(self, name, value, ttl=None, identifier=None, comment=""): |
| 304 """ |
| 305 Update the given CNAME record in this Zone to a new value, ttl, |
| 306 and identifier. Returns a Status object. |
| 307 |
| 308 Will throw TooManyRecordsException is name, value does not match |
| 309 a single record. |
| 310 """ |
| 311 name = self.route53connection._make_qualified(name) |
| 312 value = self.route53connection._make_qualified(value) |
| 313 old_record = self.get_cname(name) |
| 314 ttl = ttl or old_record.ttl |
| 315 return self.update_record(old_record, |
| 316 new_value=value, |
| 317 new_ttl=ttl, |
| 318 new_identifier=identifier, |
| 319 comment=comment) |
| 320 |
| 321 def update_a(self, name, value, ttl=None, identifier=None, comment=""): |
| 322 """ |
| 323 Update the given A record in this Zone to a new value, ttl, |
| 324 and identifier. Returns a Status object. |
| 325 |
| 326 Will throw TooManyRecordsException is name, value does not match |
| 327 a single record. |
| 328 """ |
| 329 name = self.route53connection._make_qualified(name) |
| 330 old_record = self.get_a(name) |
| 331 ttl = ttl or old_record.ttl |
| 332 return self.update_record(old_record, |
| 333 new_value=value, |
| 334 new_ttl=ttl, |
| 335 new_identifier=identifier, |
| 336 comment=comment) |
| 337 |
| 338 def update_mx(self, name, value, ttl=None, identifier=None, comment=""): |
| 339 """ |
| 340 Update the given MX record in this Zone to a new value, ttl, |
| 341 and identifier. Returns a Status object. |
| 342 |
| 343 Will throw TooManyRecordsException is name, value does not match |
| 344 a single record. |
| 345 """ |
| 346 name = self.route53connection._make_qualified(name) |
| 347 value = self.route53connection._make_qualified(value) |
| 348 old_record = self.get_mx(name) |
| 349 ttl = ttl or old_record.ttl |
| 350 return self.update_record(old_record, |
| 351 new_value=value, |
| 352 new_ttl=ttl, |
| 353 new_identifier=identifier, |
| 354 comment=comment) |
| 355 |
| 356 def delete_cname(self, name, identifier=None, all=False): |
| 357 """ |
| 358 Delete a CNAME record matching name and identifier from |
| 359 this Zone. Returns a Status object. |
| 360 |
| 361 If there is more than one match delete all matching records if |
| 362 all is True, otherwise throws TooManyRecordsException. |
| 363 """ |
| 364 name = self.route53connection._make_qualified(name) |
| 365 record = self.find_records(name, 'CNAME', identifier=identifier, |
| 366 all=all) |
| 367 return self.delete_record(record) |
| 368 |
| 369 def delete_a(self, name, identifier=None, all=False): |
| 370 """ |
| 371 Delete an A record matching name and identifier from this |
| 372 Zone. Returns a Status object. |
| 373 |
| 374 If there is more than one match delete all matching records if |
| 375 all is True, otherwise throws TooManyRecordsException. |
| 376 """ |
| 377 name = self.route53connection._make_qualified(name) |
| 378 record = self.find_records(name, 'A', identifier=identifier, |
| 379 all=all) |
| 380 return self.delete_record(record) |
| 381 |
| 382 def delete_mx(self, name, identifier=None, all=False): |
| 383 """ |
| 384 Delete an MX record matching name and identifier from this |
| 385 Zone. Returns a Status object. |
| 386 |
| 387 If there is more than one match delete all matching records if |
| 388 all is True, otherwise throws TooManyRecordsException. |
| 389 """ |
| 390 name = self.route53connection._make_qualified(name) |
| 391 record = self.find_records(name, 'MX', identifier=identifier, |
| 392 all=all) |
| 393 return self.delete_record(record) |
| 394 |
| 395 def get_records(self): |
| 396 """ |
| 397 Return a ResourceRecordsSets for all of the records in this zone. |
| 398 """ |
| 399 return self.route53connection.get_all_rrsets(self.id) |
| 400 |
| 401 def delete(self): |
| 402 """ |
| 403 Request that this zone be deleted by Amazon. |
| 404 """ |
| 405 self.route53connection.delete_hosted_zone(self.id) |
| 406 |
| 407 def get_nameservers(self): |
| 408 """ Get the list of nameservers for this zone.""" |
| 409 ns = self.find_records(self.name, 'NS') |
| 410 if ns is not None: |
| 411 ns = ns.resource_records |
| 412 return ns |
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