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A simple Amazon SQS consumer library.

Project description


Squishy is a simple Amazon SQS consumer for Python. Many versions of Python are supported, including 2.6, 2.7, 3.3, 3.4, and 3.5.

This is currently beta software! It has a suite of tests and it’s being used for non-critical production tasks but it is still very young software.


Install from pypi: pip install squishy


  • Create a virtualenv.
  • Clone the repo.
  • Install the requirements. If you want to use the futures workers on Python 2.6 or 2.7, be sure to install futures.
  • Run python develop to get the squishy CLI tool.


Squishy provides a CLI to run a worker that will dispatch messages to a callback you define. The callback should accept a single parameter representing a single message consumed from an SQS queue. The message will be an instance of SQS.Message.



def my_callback(message):
    print('Got a message! Contents:', message.body)

Then on the command line:

$ squishy run_consumer my_consumer:my_callback


Squishy uses boto3, which will automatically load credentials from $HOME/.aws/credentials. If you need more control over authentication, you can give Squishy a factory function for creating a custom session.

CLI reference

$ squishy --help
Usage: squishy [OPTIONS] COMMAND [ARGS]...

  --log-level [debug|info|warning|error|critical]
                                  Logging level.
  --botocore-log-level [debug|info|warning|error|critical]
                                  botocore logging level.
  --version                       Show the version and exit.
  --help                          Show this message and exit.


$ squishy run_consumer --help
Usage: squishy run_consumer [OPTIONS] QUEUE_URL CALLBACK

  --session-factory TEXT          Factory function for a custom boto3.Session.
  -c, --concurrency INTEGER       Worker concurrency.
  -m, --polling-method [long|short]
                                  Polling method.
  -t, --polling-timeout INTEGER   Polling interval in seconds.
  -n, --polling-count INTEGER     Number of messages to fetch when polling.
  -w, --worker-class [futures_process|futures_thread|gevent|mp_process|mp_thread]
                                  Worker class.
  --help                          Show this message and exit.



BREAKING CHANGES * The consumer now dispatches an SQS.Message instance to the callback instead of dictionary.

Bug fixes: * Fixed a bug in the multiprocessing workers where they would iterate infinitely if the callback raised an exception. (Travis Mehlinger)

New features: * Squishy now has unit tests!


Bug fixes: * Fixed relative imports for modules that have the same name as a package. (Alejandro Mesa) * Fixed missing import for gevent.monkey. (Alejandro Mesa) * Fixed a bug with passing the message to the worker process without unpacking the dictionary. (Alejandro Mesa) * Fixed a bug where the worker would fail to handle keyboard interrupts. (Alejandro Mesa) * Fixed a bug with deleting keys from the results_to_message list while iterating through the list. (Alejandro Mesa)


Bug fixes: * Switched to RST to be PyPI-friendly.


  • First release.

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