* Fix infinite loop in create_loop
fixes https://github.com/celery/celery/issues/3712
Before handling the todo items we "freeze" them by copying them aside and clearing the list.
This way if an item in the todo list appends a new callable to the list itself it will be taken care of in the next iteration of the parent loop instead of producing an infinite loop by adding it to the list we're running on.
* Changed the test to be aligned with the new implementation
* passing flake8
* Avoid copying results with each iteration of the async loop.
* Pop instead of slicing.
* fixed: todos -> todo, fixed test to use MagicMock so we can use the len() method
* MagicMock not supported in 2.7, implemented __len__ on Mock instead
* added entry to changelog
Celery 4.0.2 passes the `multiple` keyword argument to `basic_ack`.
This did not used to occur with 3.1.20- so this change is only being
merged into the 4.0 branch. The desired functionality of this param is
documented here [0], but the Qpid transport uses UUIDs as the
delivery_tags so we don't have a record of the sequential messages
required to implement this. We use UUIDs as the deliver_tag to avoid
Issue #563.
With the functionality for the `multiple` parameter not implemented, an
AssertionError is raised if Celery attempts to meaningfully use the
`multiple` parameter with the Qpid transport. A developer or user who
encounters this AssertionError should file a bug with Kombu.
[0] http://amqp.readthedocs.io/en/latest/reference/amqp.connection.html#amqp.connection.Connection.Channel.basic_ackcloses#699
* Re-Adding support for sqlalchemy as it is needed by Apache project Airflow
* Re-Adding support for sqlalchemy as it is needed by Apache project Airflow
* Switch Boto2 to Boto3 for SQS messaging
* Fixed region support
* Add SQS FIFO queue support
* Add sensible defaults for message attributes
* Asynchronous support, plus boto3 for region endpoint lookups
* Clean up imports
* Fix Python 2 support
* Fix receive_message tests
* Reformat docstring
* boto3 import changes for CI
* skip tests if boto3 not installed
* skip tests if boto3 not installed
* flake8
* noboto
* ditching boto2. got queue URL fetching, async HTTP request generation and signing working.
* request signing working kinda
* async parsing of SQS message response more or less working
* botocore sqs dep
* ripping out more old boto2 stuff
* removing tests that are no longer valid with boto3/SQS
* fix boto3 dep, min version and no botocore
* no boto2 for test
* cleaning up some SQS tests. fixing header parsing of response to msg
* fixing some sqs tests
* removing response-parsing tests that are no longer necessary as we're using the botocore response parsing machinery instead of implementing SAX parsing in kombu.
* fixing more SQS tests
* wants a region
* trying to fix py2 parsing of sqs message
* lint
* py2/py2 message header parsing stupidness
* forgot
* python 2 sux
* flake8
* Import boto3 from the right place
* Changes
* Update encode fuction
* Fix lint
* remove some unused things
* removing unused stuff
* ugh
* ugh
* ugh
* landscape ignoring
* shut up, landscape
isv1nd