mirror of
https://github.com/github/octodns.git
synced 2024-05-11 05:55:00 +00:00
1330 lines
49 KiB
Python
1330 lines
49 KiB
Python
#
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#
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#
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from __future__ import absolute_import, division, print_function, \
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unicode_literals
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from logging import getLogger
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from itertools import chain
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from collections import Mapping, OrderedDict, defaultdict
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from ns1 import NS1
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from ns1.rest.errors import RateLimitException, ResourceException
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from pycountry_convert import country_alpha2_to_continent_code
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from time import sleep
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from uuid import uuid4
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from six import text_type
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from ..record import Record, Update
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from .base import BaseProvider
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class Ns1Exception(Exception):
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pass
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class Ns1Client(object):
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log = getLogger('NS1Client')
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def __init__(self, api_key, parallelism=None, retry_count=4,
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client_config=None):
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self.log.debug('__init__: parallelism=%s, retry_count=%d, '
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'client_config=%s', parallelism, retry_count,
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client_config)
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self.retry_count = retry_count
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client = NS1(apiKey=api_key)
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# NS1 rate limits via a "token bucket" scheme, and provides information
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# about rate limiting in headers on responses. Token bucket can be
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# thought of as an initially "full" bucket, where, if not full, tokens
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# are added at some rate. This allows "bursting" requests until the
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# bucket is empty, after which, you are limited to the rate of token
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# replenishment.
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# There are a couple of "strategies" built into the SDK to avoid 429s
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# from rate limiting. Since octodns operates concurrently via
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# `max_workers`, a concurrent strategy seems appropriate.
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# This strategy does nothing until the remaining requests are equal to
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# or less than our `parallelism`, after which, each process will sleep
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# for the token replenishment interval times parallelism.
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# For example, if we can make 10 requests in 60 seconds, a token is
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# replenished every 6 seconds. If parallelism is 3, we will burst 7
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# requests, and subsequently each process will sleep for 18 seconds
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# before making another request.
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# In general, parallelism should match the number of workers.
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if parallelism is not None:
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client.config['rate_limit_strategy'] = 'concurrent'
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client.config['parallelism'] = parallelism
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# The list of records for a zone is paginated at around ~2.5k records,
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# this tells the client to handle any of that transparently and ensure
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# we get the full list of records.
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client.config['follow_pagination'] = True
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# additional options or overrides
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if isinstance(client_config, Mapping):
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for k, v in client_config.items():
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client.config[k] = v
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self._client = client
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self._records = client.records()
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self._zones = client.zones()
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self._monitors = client.monitors()
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self._notifylists = client.notifylists()
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self._datasource = client.datasource()
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self._datafeed = client.datafeed()
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self._datasource_id = None
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self._feeds_for_monitors = None
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self._monitors_cache = None
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@property
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def datasource_id(self):
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if self._datasource_id is None:
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name = 'octoDNS NS1 Data Source'
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source = None
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for candidate in self.datasource_list():
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if candidate['name'] == name:
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# Found it
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source = candidate
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break
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if source is None:
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self.log.info('datasource_id: creating datasource %s', name)
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# We need to create it
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source = self.datasource_create(name=name,
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sourcetype='nsone_monitoring')
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self.log.info('datasource_id: id=%s', source['id'])
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self._datasource_id = source['id']
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return self._datasource_id
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@property
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def feeds_for_monitors(self):
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if self._feeds_for_monitors is None:
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self.log.debug('feeds_for_monitors: fetching & building')
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self._feeds_for_monitors = {
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f['config']['jobid']: f['id']
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for f in self.datafeed_list(self.datasource_id)
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}
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return self._feeds_for_monitors
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@property
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def monitors(self):
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if self._monitors_cache is None:
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self.log.debug('monitors: fetching & building')
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self._monitors_cache = \
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{m['id']: m for m in self.monitors_list()}
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return self._monitors_cache
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def datafeed_create(self, sourceid, name, config):
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ret = self._try(self._datafeed.create, sourceid, name, config)
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self.feeds_for_monitors[config['jobid']] = ret['id']
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return ret
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def datafeed_delete(self, sourceid, feedid):
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ret = self._try(self._datafeed.delete, sourceid, feedid)
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self._feeds_for_monitors = {
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k: v for k, v in self._feeds_for_monitors.items() if v != feedid
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}
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return ret
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def datafeed_list(self, sourceid):
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return self._try(self._datafeed.list, sourceid)
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def datasource_create(self, **body):
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return self._try(self._datasource.create, **body)
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def datasource_list(self):
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return self._try(self._datasource.list)
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def monitors_create(self, **params):
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body = {}
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ret = self._try(self._monitors.create, body, **params)
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self.monitors[ret['id']] = ret
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return ret
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def monitors_delete(self, jobid):
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ret = self._try(self._monitors.delete, jobid)
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self.monitors.pop(jobid)
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return ret
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def monitors_list(self):
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return self._try(self._monitors.list)
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def monitors_update(self, job_id, **params):
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body = {}
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ret = self._try(self._monitors.update, job_id, body, **params)
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self.monitors[ret['id']] = ret
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return ret
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def notifylists_delete(self, nlid):
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return self._try(self._notifylists.delete, nlid)
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def notifylists_create(self, **body):
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return self._try(self._notifylists.create, body)
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def notifylists_list(self):
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return self._try(self._notifylists.list)
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def records_create(self, zone, domain, _type, **params):
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return self._try(self._records.create, zone, domain, _type, **params)
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def records_delete(self, zone, domain, _type):
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return self._try(self._records.delete, zone, domain, _type)
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def records_retrieve(self, zone, domain, _type):
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return self._try(self._records.retrieve, zone, domain, _type)
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def records_update(self, zone, domain, _type, **params):
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return self._try(self._records.update, zone, domain, _type, **params)
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def zones_create(self, name):
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return self._try(self._zones.create, name)
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def zones_retrieve(self, name):
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return self._try(self._zones.retrieve, name)
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def _try(self, method, *args, **kwargs):
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tries = self.retry_count
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while True: # We'll raise to break after our tries expire
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try:
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return method(*args, **kwargs)
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except RateLimitException as e:
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if tries <= 1:
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raise
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period = float(e.period)
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self.log.warn('rate limit encountered, pausing '
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'for %ds and trying again, %d remaining',
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period, tries)
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sleep(period)
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tries -= 1
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class Ns1Provider(BaseProvider):
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'''
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Ns1 provider
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ns1:
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# Required
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class: octodns.provider.ns1.Ns1Provider
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api_key: env/NS1_API_KEY
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# Only required if using dynamic records
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monitor_regions:
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- lga
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# Optional. Default: None. If set, back off in advance to avoid 429s
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# from rate-limiting. Generally this should be set to the number
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# of processes or workers hitting the API, e.g. the value of
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# `max_workers`.
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parallelism: 11
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# Optional. Default: 4. Number of times to retry if a 429 response
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# is received.
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retry_count: 4
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# Optional. Default: None. Additional options or overrides passed to
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# the NS1 SDK config, as key-value pairs.
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client_config:
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endpoint: my.nsone.endpoint # Default: api.nsone.net
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ignore-ssl-errors: true # Default: false
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follow_pagination: false # Default: true
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'''
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SUPPORTS_GEO = True
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SUPPORTS_DYNAMIC = True
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SUPPORTS = set(('A', 'AAAA', 'ALIAS', 'CAA', 'CNAME', 'MX', 'NAPTR',
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'NS', 'PTR', 'SPF', 'SRV', 'TXT'))
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ZONE_NOT_FOUND_MESSAGE = 'server error: zone not found'
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def _update_filter(self, filter, with_disabled):
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if with_disabled:
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filter['disabled'] = False
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return (dict(sorted(filter.items(), key=lambda t: t[0])))
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return filter
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def _UP_FILTER(self, with_disabled):
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return self._update_filter({
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'config': {},
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'filter': 'up'
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}, with_disabled)
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def _REGION_FILTER(self, with_disabled):
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return self._update_filter({
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'config': {
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'remove_no_georegion': True
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},
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'filter': u'geofence_regional'
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}, with_disabled)
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def _COUNTRY_FILTER(self, with_disabled):
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return self._update_filter({
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'config': {
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'remove_no_location': True
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},
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'filter': u'geofence_country'
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}, with_disabled)
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# In the NS1 UI/portal, this filter is called "SELECT FIRST GROUP" though
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# the filter name in the NS1 api is 'select_first_region'
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def _SELECT_FIRST_REGION_FILTER(self, with_disabled):
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return self._update_filter({
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'config': {},
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'filter': u'select_first_region'
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}, with_disabled)
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def _PRIORITY_FILTER(self, with_disabled):
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return self._update_filter({
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'config': {
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'eliminate': u'1'
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},
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'filter': 'priority'
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}, with_disabled)
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def _WEIGHTED_SHUFFLE_FILTER(self, with_disabled):
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return self._update_filter({
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'config': {},
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'filter': u'weighted_shuffle'
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}, with_disabled)
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def _SELECT_FIRST_N_FILTER(self, with_disabled):
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return self._update_filter({
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'config': {
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'N': u'1'
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},
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'filter': u'select_first_n'
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}, with_disabled)
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def _BASIC_FILTER_CHAIN(self, with_disabled):
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return [
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self._UP_FILTER(with_disabled),
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self._SELECT_FIRST_REGION_FILTER(with_disabled),
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self._PRIORITY_FILTER(with_disabled),
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self._WEIGHTED_SHUFFLE_FILTER(with_disabled),
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self._SELECT_FIRST_N_FILTER(with_disabled)
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]
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def _FILTER_CHAIN_WITH_REGION(self, with_disabled):
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return [
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self._UP_FILTER(with_disabled),
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self._REGION_FILTER(with_disabled),
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self._SELECT_FIRST_REGION_FILTER(with_disabled),
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self._PRIORITY_FILTER(with_disabled),
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self._WEIGHTED_SHUFFLE_FILTER(with_disabled),
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self._SELECT_FIRST_N_FILTER(with_disabled)
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]
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def _FILTER_CHAIN_WITH_COUNTRY(self, with_disabled):
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return [
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self._UP_FILTER(with_disabled),
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self._COUNTRY_FILTER(with_disabled),
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self._SELECT_FIRST_REGION_FILTER(with_disabled),
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self._PRIORITY_FILTER(with_disabled),
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self._WEIGHTED_SHUFFLE_FILTER(with_disabled),
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self._SELECT_FIRST_N_FILTER(with_disabled)
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]
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def _FILTER_CHAIN_WITH_REGION_AND_COUNTRY(self, with_disabled):
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return [
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self._UP_FILTER(with_disabled),
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self._REGION_FILTER(with_disabled),
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self._COUNTRY_FILTER(with_disabled),
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self._SELECT_FIRST_REGION_FILTER(with_disabled),
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self._PRIORITY_FILTER(with_disabled),
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self._WEIGHTED_SHUFFLE_FILTER(with_disabled),
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self._SELECT_FIRST_N_FILTER(with_disabled)
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]
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_REGION_TO_CONTINENT = {
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'AFRICA': 'AF',
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'ASIAPAC': 'AS',
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'EUROPE': 'EU',
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'SOUTH-AMERICA': 'SA',
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'US-CENTRAL': 'NA',
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'US-EAST': 'NA',
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'US-WEST': 'NA',
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}
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_CONTINENT_TO_REGIONS = {
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'AF': ('AFRICA',),
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'AS': ('ASIAPAC',),
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'EU': ('EUROPE',),
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'SA': ('SOUTH-AMERICA',),
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# TODO: what about CA, MX, and all the other NA countries?
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'NA': ('US-CENTRAL', 'US-EAST', 'US-WEST'),
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}
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# Necessary for handling unsupported continents in _CONTINENT_TO_REGIONS
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_CONTINENT_TO_LIST_OF_COUNTRIES = {
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'OC': {'FJ', 'NC', 'PG', 'SB', 'VU', 'AU', 'NF', 'NZ', 'FM', 'GU',
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'KI', 'MH', 'MP', 'NR', 'PW', 'AS', 'CK', 'NU', 'PF', 'PN',
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'TK', 'TO', 'TV', 'WF', 'WS'},
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}
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def __init__(self, id, api_key, retry_count=4, monitor_regions=None,
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parallelism=None, client_config=None, *args, **kwargs):
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self.log = getLogger('Ns1Provider[{}]'.format(id))
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self.log.debug('__init__: id=%s, api_key=***, retry_count=%d, '
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'monitor_regions=%s, parallelism=%s, client_config=%s',
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id, retry_count, monitor_regions, parallelism,
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client_config)
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super(Ns1Provider, self).__init__(id, *args, **kwargs)
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self.monitor_regions = monitor_regions
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self._client = Ns1Client(api_key, parallelism, retry_count,
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client_config)
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def _valid_filter_config(self, filter_cfg, domain):
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with_disabled = self._disabled_flag_in_filters(filter_cfg, domain)
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has_region = self._REGION_FILTER(with_disabled) in filter_cfg
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has_country = self._COUNTRY_FILTER(with_disabled) in filter_cfg
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expected_filter_cfg = self._get_updated_filter_chain(has_region,
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has_country,
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with_disabled)
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return filter_cfg == expected_filter_cfg
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def _get_updated_filter_chain(self, has_region, has_country,
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with_disabled=True):
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if has_region and has_country:
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filter_chain = self._FILTER_CHAIN_WITH_REGION_AND_COUNTRY(
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with_disabled)
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elif has_region:
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filter_chain = self._FILTER_CHAIN_WITH_REGION(with_disabled)
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elif has_country:
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filter_chain = self._FILTER_CHAIN_WITH_COUNTRY(with_disabled)
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else:
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filter_chain = self._BASIC_FILTER_CHAIN(with_disabled)
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return filter_chain
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def _encode_notes(self, data):
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return ' '.join(['{}:{}'.format(k, v)
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for k, v in sorted(data.items())])
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def _parse_notes(self, note):
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data = {}
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if note:
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for piece in note.split(' '):
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try:
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k, v = piece.split(':', 1)
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data[k] = v
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except ValueError:
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pass
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return data
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def _data_for_geo_A(self, _type, record):
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# record meta (which would include geo information is only
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# returned when getting a record's detail, not from zone detail
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geo = defaultdict(list)
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data = {
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'ttl': record['ttl'],
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'type': _type,
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}
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values, codes = [], []
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for answer in record.get('answers', []):
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meta = answer.get('meta', {})
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if meta:
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# country + state and country + province are allowed
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# in that case though, supplying a state/province would
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# be redundant since the country would supercede in when
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# resolving the record. it is syntactically valid, however.
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country = meta.get('country', [])
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us_state = meta.get('us_state', [])
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ca_province = meta.get('ca_province', [])
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for cntry in country:
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con = country_alpha2_to_continent_code(cntry)
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key = '{}-{}'.format(con, cntry)
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geo[key].extend(answer['answer'])
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for state in us_state:
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key = 'NA-US-{}'.format(state)
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geo[key].extend(answer['answer'])
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for province in ca_province:
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key = 'NA-CA-{}'.format(province)
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geo[key].extend(answer['answer'])
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for code in meta.get('iso_region_code', []):
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key = code
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geo[key].extend(answer['answer'])
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else:
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values.extend(answer['answer'])
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codes.append([])
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values = [text_type(x) for x in values]
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geo = OrderedDict(
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{text_type(k): [text_type(x) for x in v] for k, v in geo.items()}
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)
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data['values'] = values
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data['geo'] = geo
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return data
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def _parse_dynamic_pool_name(self, pool_name):
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if pool_name.startswith('catchall__'):
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# Special case for the old-style catchall prefix
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return pool_name[10:]
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try:
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pool_name, _ = pool_name.rsplit('__', 1)
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except ValueError:
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pass
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return pool_name
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def _data_for_dynamic_A(self, _type, record):
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# First make sure we have the expected filters config
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if not self._valid_filter_config(record['filters'], record['domain']):
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self.log.error('_data_for_dynamic_A: %s %s has unsupported '
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'filters', record['domain'], _type)
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raise Ns1Exception('Unrecognized advanced record')
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# All regions (pools) will include the list of default values
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# (eventually) at higher priorities, we'll just add them to this set to
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# we'll have the complete collection.
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default = set()
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# Fill out the pools by walking the answers and looking at their
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# region.
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pools = defaultdict(lambda: {'fallback': None, 'values': []})
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for answer in record['answers']:
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# region (group name in the UI) is the pool name
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pool_name = answer['region']
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# Get the actual pool name by removing the type
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pool_name = self._parse_dynamic_pool_name(pool_name)
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pool = pools[pool_name]
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meta = answer['meta']
|
|
value = text_type(answer['answer'][0])
|
|
if meta['priority'] == 1:
|
|
# priority 1 means this answer is part of the pools own values
|
|
value_dict = {
|
|
'value': value,
|
|
'weight': int(meta.get('weight', 1)),
|
|
}
|
|
# If we have the original pool name and the catchall pool name
|
|
# in the answers, they point at the same pool. Add values only
|
|
# once
|
|
if value_dict not in pool['values']:
|
|
pool['values'].append(value_dict)
|
|
else:
|
|
# It's a fallback, we only care about it if it's a
|
|
# final/default
|
|
notes = self._parse_notes(meta.get('note', ''))
|
|
if notes.get('from', False) == '--default--':
|
|
default.add(value)
|
|
|
|
# The regions objects map to rules, but it's a bit fuzzy since they're
|
|
# tied to pools on the NS1 side, e.g. we can only have 1 rule per pool,
|
|
# that may eventually run into problems, but I don't have any use-cases
|
|
# examples currently where it would
|
|
rules = {}
|
|
for pool_name, region in sorted(record['regions'].items()):
|
|
# Get the actual pool name by removing the type
|
|
pool_name = self._parse_dynamic_pool_name(pool_name)
|
|
|
|
meta = region['meta']
|
|
notes = self._parse_notes(meta.get('note', ''))
|
|
|
|
rule_order = notes['rule-order']
|
|
try:
|
|
rule = rules[rule_order]
|
|
except KeyError:
|
|
rule = {
|
|
'pool': pool_name,
|
|
'_order': rule_order,
|
|
}
|
|
rules[rule_order] = rule
|
|
|
|
# The group notes field in the UI is a `note` on the region here,
|
|
# that's where we can find our pool's fallback.
|
|
if 'fallback' in notes:
|
|
# set the fallback pool name
|
|
pools[pool_name]['fallback'] = notes['fallback']
|
|
|
|
geos = set()
|
|
|
|
# continents are mapped (imperfectly) to regions, but what about
|
|
# Canada/North America
|
|
for georegion in meta.get('georegion', []):
|
|
geos.add(self._REGION_TO_CONTINENT[georegion])
|
|
|
|
# Countries are easy enough to map, we just have to find their
|
|
# continent
|
|
#
|
|
# NOTE: Special handling for Oceania
|
|
# NS1 doesn't support Oceania as a region. So the Oceania countries
|
|
# will be present in meta['country']. If all the countries in the
|
|
# Oceania countries list are found, set the region to OC and remove
|
|
# individual oceania country entries
|
|
|
|
oc_countries = set()
|
|
for country in meta.get('country', []):
|
|
# country_alpha2_to_continent_code fails for Pitcairn ('PN')
|
|
if country == 'PN':
|
|
con = 'OC'
|
|
else:
|
|
con = country_alpha2_to_continent_code(country)
|
|
|
|
if con == 'OC':
|
|
oc_countries.add(country)
|
|
else:
|
|
# Adding only non-OC countries here to geos
|
|
geos.add('{}-{}'.format(con, country))
|
|
|
|
if oc_countries:
|
|
if oc_countries == self._CONTINENT_TO_LIST_OF_COUNTRIES['OC']:
|
|
# All OC countries found, so add 'OC' to geos
|
|
geos.add('OC')
|
|
else:
|
|
# Partial OC countries found, just add them as-is to geos
|
|
for c in oc_countries:
|
|
geos.add('{}-{}'.format('OC', c))
|
|
|
|
# States are easy too, just assume NA-US (CA providences aren't
|
|
# supported by octoDNS currently)
|
|
for state in meta.get('us_state', []):
|
|
geos.add('NA-US-{}'.format(state))
|
|
|
|
if geos:
|
|
# There are geos, combine them with any existing geos for this
|
|
# pool and recorded the sorted unique set of them
|
|
rule['geos'] = sorted(set(rule.get('geos', [])) | geos)
|
|
|
|
# Order and convert to a list
|
|
default = sorted(default)
|
|
# Convert to list and order
|
|
rules = list(rules.values())
|
|
rules.sort(key=lambda r: (r['_order'], r['pool']))
|
|
|
|
return {
|
|
'dynamic': {
|
|
'pools': pools,
|
|
'rules': rules,
|
|
},
|
|
'ttl': record['ttl'],
|
|
'type': _type,
|
|
'values': sorted(default),
|
|
}
|
|
|
|
def _data_for_A(self, _type, record):
|
|
if record.get('tier', 1) > 1:
|
|
# Advanced record, see if it's first answer has a note
|
|
try:
|
|
first_answer_note = record['answers'][0]['meta']['note']
|
|
except (IndexError, KeyError):
|
|
first_answer_note = ''
|
|
# If that note includes a `from` (pool name) it's a dynamic record
|
|
if 'from:' in first_answer_note:
|
|
return self._data_for_dynamic_A(_type, record)
|
|
# If not it's an old geo record
|
|
return self._data_for_geo_A(_type, record)
|
|
|
|
# This is a basic record, just convert it
|
|
return {
|
|
'ttl': record['ttl'],
|
|
'type': _type,
|
|
'values': [text_type(x) for x in record['short_answers']]
|
|
}
|
|
|
|
_data_for_AAAA = _data_for_A
|
|
|
|
def _data_for_SPF(self, _type, record):
|
|
values = [v.replace(';', '\\;') for v in record['short_answers']]
|
|
return {
|
|
'ttl': record['ttl'],
|
|
'type': _type,
|
|
'values': values
|
|
}
|
|
|
|
_data_for_TXT = _data_for_SPF
|
|
|
|
def _data_for_CAA(self, _type, record):
|
|
values = []
|
|
for answer in record['short_answers']:
|
|
flags, tag, value = answer.split(' ', 2)
|
|
values.append({
|
|
'flags': flags,
|
|
'tag': tag,
|
|
'value': value,
|
|
})
|
|
return {
|
|
'ttl': record['ttl'],
|
|
'type': _type,
|
|
'values': values,
|
|
}
|
|
|
|
def _data_for_CNAME(self, _type, record):
|
|
try:
|
|
value = record['short_answers'][0]
|
|
except IndexError:
|
|
value = None
|
|
return {
|
|
'ttl': record['ttl'],
|
|
'type': _type,
|
|
'value': value,
|
|
}
|
|
|
|
_data_for_ALIAS = _data_for_CNAME
|
|
_data_for_PTR = _data_for_CNAME
|
|
|
|
def _data_for_MX(self, _type, record):
|
|
values = []
|
|
for answer in record['short_answers']:
|
|
preference, exchange = answer.split(' ', 1)
|
|
values.append({
|
|
'preference': preference,
|
|
'exchange': exchange,
|
|
})
|
|
return {
|
|
'ttl': record['ttl'],
|
|
'type': _type,
|
|
'values': values,
|
|
}
|
|
|
|
def _data_for_NAPTR(self, _type, record):
|
|
values = []
|
|
for answer in record['short_answers']:
|
|
order, preference, flags, service, regexp, replacement = \
|
|
answer.split(' ', 5)
|
|
values.append({
|
|
'flags': flags,
|
|
'order': order,
|
|
'preference': preference,
|
|
'regexp': regexp,
|
|
'replacement': replacement,
|
|
'service': service,
|
|
})
|
|
return {
|
|
'ttl': record['ttl'],
|
|
'type': _type,
|
|
'values': values,
|
|
}
|
|
|
|
def _data_for_NS(self, _type, record):
|
|
return {
|
|
'ttl': record['ttl'],
|
|
'type': _type,
|
|
'values': [a if a.endswith('.') else '{}.'.format(a)
|
|
for a in record['short_answers']],
|
|
}
|
|
|
|
def _data_for_SRV(self, _type, record):
|
|
values = []
|
|
for answer in record['short_answers']:
|
|
priority, weight, port, target = answer.split(' ', 3)
|
|
values.append({
|
|
'priority': priority,
|
|
'weight': weight,
|
|
'port': port,
|
|
'target': target,
|
|
})
|
|
return {
|
|
'ttl': record['ttl'],
|
|
'type': _type,
|
|
'values': values,
|
|
}
|
|
|
|
def populate(self, zone, target=False, lenient=False):
|
|
self.log.debug('populate: name=%s, target=%s, lenient=%s',
|
|
zone.name,
|
|
target, lenient)
|
|
|
|
try:
|
|
ns1_zone_name = zone.name[:-1]
|
|
ns1_zone = self._client.zones_retrieve(ns1_zone_name)
|
|
|
|
records = []
|
|
geo_records = []
|
|
|
|
# change answers for certain types to always be absolute
|
|
for record in ns1_zone['records']:
|
|
if record['type'] in ['ALIAS', 'CNAME', 'MX', 'NS', 'PTR',
|
|
'SRV']:
|
|
for i, a in enumerate(record['short_answers']):
|
|
if not a.endswith('.'):
|
|
record['short_answers'][i] = '{}.'.format(a)
|
|
|
|
if record.get('tier', 1) > 1:
|
|
# Need to get the full record data for geo records
|
|
record = self._client.records_retrieve(ns1_zone_name,
|
|
record['domain'],
|
|
record['type'])
|
|
geo_records.append(record)
|
|
else:
|
|
records.append(record)
|
|
|
|
exists = True
|
|
except ResourceException as e:
|
|
if e.message != self.ZONE_NOT_FOUND_MESSAGE:
|
|
raise
|
|
records = []
|
|
geo_records = []
|
|
exists = False
|
|
|
|
before = len(zone.records)
|
|
# geo information isn't returned from the main endpoint, so we need
|
|
# to query for all records with geo information
|
|
zone_hash = {}
|
|
for record in chain(records, geo_records):
|
|
_type = record['type']
|
|
if _type not in self.SUPPORTS:
|
|
continue
|
|
data_for = getattr(self, '_data_for_{}'.format(_type))
|
|
name = zone.hostname_from_fqdn(record['domain'])
|
|
data = data_for(_type, record)
|
|
record = Record.new(zone, name, data, source=self, lenient=lenient)
|
|
zone_hash[(_type, name)] = record
|
|
[zone.add_record(r, lenient=lenient) for r in zone_hash.values()]
|
|
self.log.info('populate: found %s records, exists=%s',
|
|
len(zone.records) - before, exists)
|
|
return exists
|
|
|
|
def _params_for_geo_A(self, record):
|
|
# purposefully set non-geo answers to have an empty meta,
|
|
# so that we know we did this on purpose if/when troubleshooting
|
|
params = {
|
|
'answers': [{"answer": [x], "meta": {}} for x in record.values],
|
|
'ttl': record.ttl,
|
|
}
|
|
|
|
has_country = False
|
|
for iso_region, target in record.geo.items():
|
|
key = 'iso_region_code'
|
|
value = iso_region
|
|
if not has_country and len(value.split('-')) > 1:
|
|
has_country = True
|
|
for answer in target.values:
|
|
params['answers'].append(
|
|
{
|
|
'answer': [answer],
|
|
'meta': {key: [value]},
|
|
},
|
|
)
|
|
|
|
params['filters'] = []
|
|
if has_country:
|
|
params['filters'].append(
|
|
{"filter": "shuffle", "config": {}}
|
|
)
|
|
params['filters'].append(
|
|
{"filter": "geotarget_country", "config": {}}
|
|
)
|
|
params['filters'].append(
|
|
{"filter": "select_first_n",
|
|
"config": {"N": 1}}
|
|
)
|
|
|
|
return params, None
|
|
|
|
def _monitors_for(self, record):
|
|
monitors = {}
|
|
|
|
if getattr(record, 'dynamic', False):
|
|
expected_host = record.fqdn[:-1]
|
|
expected_type = record._type
|
|
|
|
for monitor in self._client.monitors.values():
|
|
data = self._parse_notes(monitor['notes'])
|
|
if expected_host == data['host'] and \
|
|
expected_type == data['type']:
|
|
# This monitor does not belong to this record
|
|
config = monitor['config']
|
|
value = config['host']
|
|
monitors[value] = monitor
|
|
|
|
return monitors
|
|
|
|
def _uuid(self):
|
|
return uuid4().hex
|
|
|
|
def _feed_create(self, monitor):
|
|
monitor_id = monitor['id']
|
|
self.log.debug('_feed_create: monitor=%s', monitor_id)
|
|
# TODO: looks like length limit is 64 char
|
|
name = '{} - {}'.format(monitor['name'], self._uuid()[:6])
|
|
|
|
# Create the data feed
|
|
config = {
|
|
'jobid': monitor_id,
|
|
}
|
|
feed = self._client.datafeed_create(self._client.datasource_id, name,
|
|
config)
|
|
feed_id = feed['id']
|
|
self.log.debug('_feed_create: feed=%s', feed_id)
|
|
|
|
return feed_id
|
|
|
|
def _monitor_create(self, monitor):
|
|
self.log.debug('_monitor_create: monitor="%s"', monitor['name'])
|
|
# Create the notify list
|
|
notify_list = [{
|
|
'config': {
|
|
'sourceid': self._client.datasource_id,
|
|
},
|
|
'type': 'datafeed',
|
|
}]
|
|
nl = self._client.notifylists_create(name=monitor['name'],
|
|
notify_list=notify_list)
|
|
nl_id = nl['id']
|
|
self.log.debug('_monitor_create: notify_list=%s', nl_id)
|
|
|
|
# Create the monitor
|
|
monitor['notify_list'] = nl_id
|
|
monitor = self._client.monitors_create(**monitor)
|
|
monitor_id = monitor['id']
|
|
self.log.debug('_monitor_create: monitor=%s', monitor_id)
|
|
|
|
return monitor_id, self._feed_create(monitor)
|
|
|
|
def _monitor_gen(self, record, value):
|
|
host = record.fqdn[:-1]
|
|
_type = record._type
|
|
|
|
ret = {
|
|
'active': True,
|
|
'config': {
|
|
'connect_timeout': 2000,
|
|
'host': value,
|
|
'port': record.healthcheck_port,
|
|
'response_timeout': 10000,
|
|
'ssl': record.healthcheck_protocol == 'HTTPS',
|
|
},
|
|
'frequency': 60,
|
|
'job_type': 'tcp',
|
|
'name': '{} - {} - {}'.format(host, _type, value),
|
|
'notes': self._encode_notes({
|
|
'host': host,
|
|
'type': _type,
|
|
}),
|
|
'policy': 'quorum',
|
|
'rapid_recheck': False,
|
|
'region_scope': 'fixed',
|
|
'regions': self.monitor_regions,
|
|
}
|
|
|
|
if record.healthcheck_protocol != 'TCP':
|
|
# IF it's HTTP we need to send the request string
|
|
path = record.healthcheck_path
|
|
host = record.healthcheck_host
|
|
request = r'GET {path} HTTP/1.0\r\nHost: {host}\r\n' \
|
|
r'User-agent: NS1\r\n\r\n'.format(path=path, host=host)
|
|
ret['config']['send'] = request
|
|
# We'll also expect a HTTP response
|
|
ret['rules'] = [{
|
|
'comparison': 'contains',
|
|
'key': 'output',
|
|
'value': '200 OK',
|
|
}]
|
|
|
|
return ret
|
|
|
|
def _monitor_is_match(self, expected, have):
|
|
# Make sure what we have matches what's in expected exactly. Anything
|
|
# else in have will be ignored.
|
|
for k, v in expected.items():
|
|
if have.get(k, '--missing--') != v:
|
|
return False
|
|
|
|
return True
|
|
|
|
def _monitor_sync(self, record, value, existing):
|
|
self.log.debug('_monitor_sync: record=%s, value=%s', record.fqdn,
|
|
value)
|
|
expected = self._monitor_gen(record, value)
|
|
|
|
if existing:
|
|
self.log.debug('_monitor_sync: existing=%s', existing['id'])
|
|
monitor_id = existing['id']
|
|
|
|
if not self._monitor_is_match(expected, existing):
|
|
self.log.debug('_monitor_sync: existing needs update')
|
|
# Update the monitor to match expected, everything else will be
|
|
# left alone and assumed correct
|
|
self._client.monitors_update(monitor_id, **expected)
|
|
|
|
feed_id = self._client.feeds_for_monitors.get(monitor_id)
|
|
if feed_id is None:
|
|
self.log.warn('_monitor_sync: %s (%s) missing feed, creating',
|
|
existing['name'], monitor_id)
|
|
feed_id = self._feed_create(existing)
|
|
else:
|
|
self.log.debug('_monitor_sync: needs create')
|
|
# We don't have an existing monitor create it (and related bits)
|
|
monitor_id, feed_id = self._monitor_create(expected)
|
|
|
|
return monitor_id, feed_id
|
|
|
|
def _monitors_gc(self, record, active_monitor_ids=None):
|
|
self.log.debug('_monitors_gc: record=%s, active_monitor_ids=%s',
|
|
record.fqdn, active_monitor_ids)
|
|
|
|
if active_monitor_ids is None:
|
|
active_monitor_ids = set()
|
|
|
|
for monitor in self._monitors_for(record).values():
|
|
monitor_id = monitor['id']
|
|
if monitor_id in active_monitor_ids:
|
|
continue
|
|
|
|
self.log.debug('_monitors_gc: deleting %s', monitor_id)
|
|
|
|
feed_id = self._client.feeds_for_monitors.get(monitor_id)
|
|
if feed_id:
|
|
self._client.datafeed_delete(self._client.datasource_id,
|
|
feed_id)
|
|
|
|
self._client.monitors_delete(monitor_id)
|
|
|
|
notify_list_id = monitor['notify_list']
|
|
self._client.notifylists_delete(notify_list_id)
|
|
|
|
def _add_answers_for_pool(self, answers, default_answers, pool_name,
|
|
pool_label, pool_answers, pools, priority):
|
|
current_pool_name = pool_name
|
|
seen = set()
|
|
while current_pool_name and current_pool_name not in seen:
|
|
seen.add(current_pool_name)
|
|
pool = pools[current_pool_name]
|
|
for answer in pool_answers[current_pool_name]:
|
|
answer = {
|
|
'answer': answer['answer'],
|
|
'meta': {
|
|
'priority': priority,
|
|
'note': self._encode_notes({
|
|
'from': pool_label,
|
|
}),
|
|
'up': {
|
|
'feed': answer['feed_id'],
|
|
},
|
|
'weight': answer['weight'],
|
|
},
|
|
'region': pool_label, # the one we're answering
|
|
}
|
|
answers.append(answer)
|
|
|
|
current_pool_name = pool.data.get('fallback', None)
|
|
priority += 1
|
|
|
|
# Static/default
|
|
for answer in default_answers:
|
|
answer = {
|
|
'answer': answer['answer'],
|
|
'meta': {
|
|
'priority': priority,
|
|
'note': self._encode_notes({
|
|
'from': '--default--',
|
|
}),
|
|
'up': True,
|
|
'weight': 1,
|
|
},
|
|
'region': pool_label, # the one we're answering
|
|
}
|
|
answers.append(answer)
|
|
|
|
def _params_for_dynamic_A(self, record):
|
|
pools = record.dynamic.pools
|
|
|
|
# Convert rules to regions
|
|
has_country = False
|
|
has_region = False
|
|
regions = {}
|
|
|
|
for i, rule in enumerate(record.dynamic.rules):
|
|
pool_name = rule.data['pool']
|
|
|
|
notes = {
|
|
'rule-order': i,
|
|
}
|
|
|
|
fallback = pools[pool_name].data.get('fallback', None)
|
|
if fallback:
|
|
notes['fallback'] = fallback
|
|
|
|
country = set()
|
|
georegion = set()
|
|
us_state = set()
|
|
|
|
for geo in rule.data.get('geos', []):
|
|
n = len(geo)
|
|
if n == 8:
|
|
# US state, e.g. NA-US-KY
|
|
us_state.add(geo[-2:])
|
|
# For filtering. State filtering is done by the country
|
|
# filter
|
|
has_country = True
|
|
elif n == 5:
|
|
# Country, e.g. EU-FR
|
|
country.add(geo[-2:])
|
|
has_country = True
|
|
else:
|
|
# Continent, e.g. AS
|
|
if geo in self._CONTINENT_TO_REGIONS:
|
|
georegion.update(self._CONTINENT_TO_REGIONS[geo])
|
|
has_region = True
|
|
else:
|
|
# No maps for geo in _CONTINENT_TO_REGIONS.
|
|
# Use the country list
|
|
self.log.debug('Converting geo {} to country list'.
|
|
format(geo))
|
|
for c in self._CONTINENT_TO_LIST_OF_COUNTRIES[geo]:
|
|
country.add(c)
|
|
has_country = True
|
|
|
|
meta = {
|
|
'note': self._encode_notes(notes),
|
|
}
|
|
|
|
if georegion:
|
|
georegion_meta = dict(meta)
|
|
georegion_meta['georegion'] = sorted(georegion)
|
|
regions['{}__georegion'.format(pool_name)] = {
|
|
'meta': georegion_meta,
|
|
}
|
|
|
|
if country or us_state:
|
|
# If there's country and/or states its a country pool,
|
|
# countries and states can coexist as they're handled by the
|
|
# same step in the filterchain (countries and georegions
|
|
# cannot as they're seperate stages and run the risk of
|
|
# eliminating all options)
|
|
country_state_meta = dict(meta)
|
|
if country:
|
|
country_state_meta['country'] = sorted(country)
|
|
if us_state:
|
|
country_state_meta['us_state'] = sorted(us_state)
|
|
regions['{}__country'.format(pool_name)] = {
|
|
'meta': country_state_meta,
|
|
}
|
|
|
|
if not georegion and not country and not us_state:
|
|
# If there's no targeting it's a catchall
|
|
regions['{}__catchall'.format(pool_name)] = {
|
|
'meta': meta,
|
|
}
|
|
|
|
existing_monitors = self._monitors_for(record)
|
|
active_monitors = set()
|
|
|
|
# Build a list of primary values for each pool, including their
|
|
# feed_id (monitor)
|
|
pool_answers = defaultdict(list)
|
|
for pool_name, pool in sorted(pools.items()):
|
|
for value in pool.data['values']:
|
|
weight = value['weight']
|
|
value = value['value']
|
|
existing = existing_monitors.get(value)
|
|
monitor_id, feed_id = self._monitor_sync(record, value,
|
|
existing)
|
|
active_monitors.add(monitor_id)
|
|
pool_answers[pool_name].append({
|
|
'answer': [value],
|
|
'weight': weight,
|
|
'feed_id': feed_id,
|
|
})
|
|
|
|
default_answers = [{
|
|
'answer': [v],
|
|
'weight': 1,
|
|
} for v in record.values]
|
|
|
|
# Build our list of answers
|
|
# The regions dictionary built above already has the required pool
|
|
# names. Iterate over them and add answers.
|
|
answers = []
|
|
for pool_name in sorted(regions.keys()):
|
|
priority = 1
|
|
|
|
# Dynamic/health checked
|
|
pool_label = pool_name
|
|
# Remove the pool type from the end of the name
|
|
pool_name = self._parse_dynamic_pool_name(pool_name)
|
|
self._add_answers_for_pool(answers, default_answers, pool_name,
|
|
pool_label, pool_answers, pools,
|
|
priority)
|
|
|
|
# Update filters as necessary
|
|
filters = self._get_updated_filter_chain(has_region, has_country)
|
|
|
|
return {
|
|
'answers': answers,
|
|
'filters': filters,
|
|
'regions': regions,
|
|
'ttl': record.ttl,
|
|
}, active_monitors
|
|
|
|
def _params_for_A(self, record):
|
|
if getattr(record, 'dynamic', False):
|
|
return self._params_for_dynamic_A(record)
|
|
elif hasattr(record, 'geo'):
|
|
return self._params_for_geo_A(record)
|
|
|
|
return {
|
|
'answers': record.values,
|
|
'ttl': record.ttl,
|
|
}, None
|
|
|
|
_params_for_AAAA = _params_for_A
|
|
_params_for_NS = _params_for_A
|
|
|
|
def _params_for_SPF(self, record):
|
|
# NS1 seems to be the only provider that doesn't want things
|
|
# escaped in values so we have to strip them here and add
|
|
# them when going the other way
|
|
values = [v.replace('\\;', ';') for v in record.values]
|
|
return {'answers': values, 'ttl': record.ttl}, None
|
|
|
|
_params_for_TXT = _params_for_SPF
|
|
|
|
def _params_for_CAA(self, record):
|
|
values = [(v.flags, v.tag, v.value) for v in record.values]
|
|
return {'answers': values, 'ttl': record.ttl}, None
|
|
|
|
# TODO: dynamic CNAME support
|
|
def _params_for_CNAME(self, record):
|
|
return {'answers': [record.value], 'ttl': record.ttl}, None
|
|
|
|
_params_for_ALIAS = _params_for_CNAME
|
|
_params_for_PTR = _params_for_CNAME
|
|
|
|
def _params_for_MX(self, record):
|
|
values = [(v.preference, v.exchange) for v in record.values]
|
|
return {'answers': values, 'ttl': record.ttl}, None
|
|
|
|
def _params_for_NAPTR(self, record):
|
|
values = [(v.order, v.preference, v.flags, v.service, v.regexp,
|
|
v.replacement) for v in record.values]
|
|
return {'answers': values, 'ttl': record.ttl}, None
|
|
|
|
def _params_for_SRV(self, record):
|
|
values = [(v.priority, v.weight, v.port, v.target)
|
|
for v in record.values]
|
|
return {'answers': values, 'ttl': record.ttl}, None
|
|
|
|
def _get_ns1_filters(self, ns1_zone_name):
|
|
ns1_filters = {}
|
|
ns1_zone = {}
|
|
|
|
try:
|
|
ns1_zone = self._client.zones_retrieve(ns1_zone_name)
|
|
except ResourceException as e:
|
|
if e.message != self.ZONE_NOT_FOUND_MESSAGE:
|
|
raise
|
|
|
|
if 'records' in ns1_zone:
|
|
for ns1_record in ns1_zone['records']:
|
|
if ns1_record.get('tier', 1) > 1:
|
|
# Need to get the full record data for geo records
|
|
full_rec = self._client.records_retrieve(
|
|
ns1_zone_name,
|
|
ns1_record['domain'],
|
|
ns1_record['type'])
|
|
if 'filters' in full_rec:
|
|
filter_key = '{}.'.format(ns1_record['domain'])
|
|
ns1_filters[filter_key] = full_rec['filters']
|
|
|
|
return ns1_filters
|
|
|
|
def _disabled_flag_in_filters(self, filters, domain):
|
|
disabled_count = ['disabled' in f for f in filters].count(True)
|
|
if disabled_count and disabled_count != len(filters):
|
|
# Some filters have the disabled flag, and some don't. Disallow
|
|
exception_msg = 'Mixed disabled flag in filters for {}'.format(
|
|
domain)
|
|
raise Ns1Exception(exception_msg)
|
|
return disabled_count == len(filters)
|
|
|
|
def _extra_changes(self, desired, changes, **kwargs):
|
|
self.log.debug('_extra_changes: desired=%s', desired.name)
|
|
ns1_filters = self._get_ns1_filters(desired.name[:-1])
|
|
changed = set([c.record for c in changes])
|
|
extra = []
|
|
for record in desired.records:
|
|
if record in changed or not getattr(record, 'dynamic', False):
|
|
# Already changed, or no dynamic , no need to check it
|
|
continue
|
|
|
|
# Filter normalization
|
|
# Check if filters for existing domains need an update
|
|
# Needs an explicit check since there might be no change in the
|
|
# config at all. Filters however might still need an update
|
|
domain = '{}.{}'.format(record.name, record.zone.name)
|
|
if domain in ns1_filters:
|
|
domain_filters = ns1_filters[domain]
|
|
if not self._disabled_flag_in_filters(domain_filters, domain):
|
|
# 'disabled' entry absent in filter config. Need to update
|
|
# filters. Update record
|
|
self.log.info('_extra_changes: change in filters for %s',
|
|
domain)
|
|
extra.append(Update(record, record))
|
|
continue
|
|
|
|
for have in self._monitors_for(record).values():
|
|
value = have['config']['host']
|
|
expected = self._monitor_gen(record, value)
|
|
# TODO: find values which have missing monitors
|
|
if not self._monitor_is_match(expected, have):
|
|
self.log.info('_extra_changes: monitor mis-match for %s',
|
|
expected['name'])
|
|
extra.append(Update(record, record))
|
|
break
|
|
if not have.get('notify_list'):
|
|
self.log.info('_extra_changes: broken monitor no notify '
|
|
'list %s (%s)', have['name'], have['id'])
|
|
extra.append(Update(record, record))
|
|
break
|
|
|
|
return extra
|
|
|
|
def _apply_Create(self, ns1_zone, change):
|
|
new = change.new
|
|
zone = new.zone.name[:-1]
|
|
domain = new.fqdn[:-1]
|
|
_type = new._type
|
|
params, active_monitor_ids = \
|
|
getattr(self, '_params_for_{}'.format(_type))(new)
|
|
self._client.records_create(zone, domain, _type, **params)
|
|
self._monitors_gc(new, active_monitor_ids)
|
|
|
|
def _apply_Update(self, ns1_zone, change):
|
|
new = change.new
|
|
zone = new.zone.name[:-1]
|
|
domain = new.fqdn[:-1]
|
|
_type = new._type
|
|
params, active_monitor_ids = \
|
|
getattr(self, '_params_for_{}'.format(_type))(new)
|
|
self._client.records_update(zone, domain, _type, **params)
|
|
self._monitors_gc(new, active_monitor_ids)
|
|
|
|
def _apply_Delete(self, ns1_zone, change):
|
|
existing = change.existing
|
|
zone = existing.zone.name[:-1]
|
|
domain = existing.fqdn[:-1]
|
|
_type = existing._type
|
|
self._client.records_delete(zone, domain, _type)
|
|
self._monitors_gc(existing)
|
|
|
|
def _has_dynamic(self, changes):
|
|
for change in changes:
|
|
if getattr(change.record, 'dynamic', False):
|
|
return True
|
|
|
|
return False
|
|
|
|
def _apply(self, plan):
|
|
desired = plan.desired
|
|
changes = plan.changes
|
|
self.log.debug('_apply: zone=%s, len(changes)=%d', desired.name,
|
|
len(changes))
|
|
|
|
# Make sure that if we're going to make any dynamic changes that we
|
|
# have monitor_regions configured before touching anything so we can
|
|
# abort early and not half-apply
|
|
if self._has_dynamic(changes) and self.monitor_regions is None:
|
|
raise Ns1Exception('Monitored record, but monitor_regions not set')
|
|
|
|
domain_name = desired.name[:-1]
|
|
try:
|
|
ns1_zone = self._client.zones_retrieve(domain_name)
|
|
except ResourceException as e:
|
|
if e.message != self.ZONE_NOT_FOUND_MESSAGE:
|
|
raise
|
|
self.log.debug('_apply: no matching zone, creating')
|
|
ns1_zone = self._client.zones_create(domain_name)
|
|
|
|
for change in changes:
|
|
class_name = change.__class__.__name__
|
|
getattr(self, '_apply_{}'.format(class_name))(ns1_zone,
|
|
change)
|