68 lines
2.4 KiB
Python
68 lines
2.4 KiB
Python
import os
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import time
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import boto3
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import botocore.session
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from botocore import credentials
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import logging
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logger = logging.getLogger(__name__)
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class BotoConnection():
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_sessions = {}
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_clients = {}
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def __init__(self, profile=None, region=None):
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self.region = region
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self.profile = profile
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def _get_session(self, profile=None, region=None):
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if self._sessions.get((profile, region)):
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return self._sessions[(profile, region)]
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# Construct botocore session with cache
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# Setup boto to cache STS tokens for MFA
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# Change the cache path from the default of ~/.aws/boto/cache to the one used by awscli
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session_vars = {}
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if profile:
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session_vars['profile'] = (None, None, profile, None)
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if region and region != 'global':
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session_vars['region'] = (None, None, region, None)
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session = botocore.session.Session(session_vars=session_vars)
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cli_cache = os.path.join(os.path.expanduser('~'), '.aws/cli/cache')
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session.get_component('credential_provider').get_provider('assume-role').cache = credentials.JSONFileCache(cli_cache)
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self._sessions[(profile, region)] = session
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return session
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def _get_client(self, service, profile=None, region=None):
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if self._clients.get((profile, region, service)):
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logger.debug("Reusing boto session for {} {} {}".format(profile, region, service))
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return self._clients[(profile, region, service)]
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session = self._get_session(profile, region)
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client = boto3.Session(botocore_session=session).client(service)
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logger.debug("New boto session for {} {} {}".format(profile, region, service))
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self._clients[(profile, region, service)] = client
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return client
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def call(self, service, command, kwargs={}, profile=None, region=None):
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while True:
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try:
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client = self._get_client(service, profile, region)
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logger.debug("Calling {}:{}".format(client, command))
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return getattr(client, command)(**kwargs)
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except botocore.exceptions.ClientError as e:
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if e.response['Error']['Code'] == 'Throttling':
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logger.warning("Throttling exception occured during {} - retry after 3s".format(command))
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time.sleep(3)
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pass
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else:
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raise e
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