Toolset to render and manage AWS CloudFormation ( https://pypi.org/project/cloudbender )
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 

75 lines
2.6 KiB

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