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Gunicorn 19.0 has been released
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@benoitc benoitc released this 12 Jun 15:02
· 1462 commits to master since this release
19.0
b00e875

Gunicorn 19.0 is a major release with new features and fixes. This version improve a lot the usage of Gunicorn with python 3 by adding two new workers to it: gthread a fully threaded async worker using futures and gaiohttp a worker using asyncio.

Breaking Changes

Switch QUIT and TERM signals

With this change, when gunicorn receives a QUIT all the workers are
killed immediately and exit and TERM is used for the graceful shutdown.

Note: the old behaviour was based on the NGINX but the new one is more
correct according the following doc:

https://www.gnu.org/software/libc/manual/html_node/Termination-Signals.html

also it is complying with the way the signals are sent by heroku:

https://devcenter.heroku.com/articles/python-faq#what-constraints-exist-when-developing-applications-on-heroku

Deprecations

run_gunicorn, gunicorn_django and gunicorn_paster are now completely deprecated and will be removed in the next release. Use the gunicorn command instead.

Changes:

core

  • add aiohttp worker named gaiohttp using asyncio. Full async worker
    on python 3.
  • fix HTTP-violating excess whitespace in write_error output
  • fix: try to log what happened in the worker after a timeout, add a
    worker_abort hook on SIGABRT signal.
  • fix: save listener socket name in workers so we can handle buffered
    keep-alive requests after the listener has closed.
  • add on_exit hook called just before exiting gunicorn.
  • add support for python 3.4
  • fix: do not swallow unexpected errors when reaping
  • fix: remove incompatible SSL option with python 2.6
  • add new async gthread worker and --threads options allows to set multiple
    threads to listen on connection
  • deprecate gunicorn_django and gunicorn_paster
  • switch QUIT and TERM signal
  • reap workers in SIGCHLD handler
  • add universal wheel support
  • use email.utils.formatdate in gunicorn.util.http_date
  • deprecate the --debug option
  • fix: log exceptions that occur after response start …
  • allows loading of applications from .pyc files (#693)
  • fix: issue #691, raw_env config file parsing
  • use a dynamic timeout to wait for the optimal time. (Reduce power
    usage)
  • fix python3 support when notifying the arbiter
  • add: honor $WEB_CONCURRENCY environment variable. Useful for heroku
    setups.
  • add: include tz offset in access log
  • add: include access logs in the syslog handler.
  • add --reload option for code reloading
  • add the capability to load gunicorn.base.Application without the loading of the arguments of the command line. It allows you to embed gunicorn in your own application.
  • improve: set wsgi.multithread to True for async workers
  • fix logging: make sure to redirect wsgi.errors when needed
  • add: syslog logging can now be done to a unix socket
  • fix logging: don't try to redirect stdout/stderr to the logfile.
  • fix logging: don't propagate log
  • improve logging: file option can be overriden by the gunicorn options --error-logfile and --access-logfile if they are given.
  • fix: dont' override SERVER_* by the Host header
  • fix: handle_error
  • add more option to configure SSL
  • fix: sendfile with SSL
  • add: worker_int callback (to react on SIGTERM)
  • fix: don't depend on entry point for internal classes, now absolute
    modules path can be given.
  • fix: Error messages are now encoded in latin1
  • fix: request line length check
  • improvement: proxy_allow_ips: Allow proxy protocol if "*" specified
  • fix: run worker's setup method before setting num_workers
  • fix: FileWrapper inherit from object now
  • fix: Error messages are now encoded in latin1
  • fix: don't spam the console on SIGWINCH.
  • fix: logging -don't stringify T and D logging atoms (#621)
  • add support for the latest django version
  • deprecate run_gunicorn django option
  • fix: sys imported twice

gevent worker

  • fix: make sure to stop all listeners
  • fix: monkey patching is now done in the worker
  • fix: "global name 'hub' is not defined"
  • fix: reinit hub on old versions of gevent
  • support gevent 1.0
  • fix: add subprocess in monket patching
  • fix: add support for multiple listener

eventlet worker

  • fix: merge duplicate EventletWorker.init_process method (fixes #657)
  • fix: missing errno import for eventlet sendfile patch
  • fix: add support for multiple listener

tornado worker

  • add gracefull stop support

Full changelog is available here:

18.0...19.0

More

You can find the documentation here:

http://docs.gunicorn.org/en/19.0/

Latest version is also available on Pypi:

https://pypi.python.org/pypi/gunicorn/19.0.0

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