File: PKG-INFO

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supervisor 3.3.5-1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 2,252 kB
  • sloc: python: 25,045; makefile: 78; sh: 75
file content (1746 lines) | stat: -rw-r--r-- 88,905 bytes parent folder | download | duplicates (4)
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Metadata-Version: 2.1
Name: supervisor
Version: 3.3.5
Summary: A system for controlling process state under UNIX
Home-page: http://supervisord.org/
Author: Chris McDonough
Author-email: chrism@plope.com
License: BSD-derived (http://www.repoze.org/LICENSE.txt)
Description: Supervisor
        ==========
        
        Supervisor is a client/server system that allows its users to
        control a number of processes on UNIX-like operating systems.
        
        Supported Platforms
        -------------------
        
        Supervisor has been tested and is known to run on Linux (Ubuntu), Mac OS X
        (10.4, 10.5, 10.6), and Solaris (10 for Intel) and FreeBSD 6.1.  It will
        likely work fine on most UNIX systems.
        
        Supervisor will not run at all under any version of Windows.
        
        Supervisor is known to work with Python 2.4 or later but will not work
        under any version of Python 3.
        
        Documentation
        -------------
        
        You can view the current Supervisor documentation online `in HTML format
        <http://supervisord.org/>`_ .  This is where you should go for detailed
        installation and configuration documentation.
        
        Mailing list, Reporting Bugs, and Viewing the Source Repository
        ---------------------------------------------------------------
        
        You may subscribe to the `Supervisor-users mailing list
        <http://lists.supervisord.org/mailman/listinfo/supervisor-users>`_.
        
        Please report bugs in the `Github issue tracker
        <https://github.com/Supervisor/supervisor/issues>`_.
        
        You can view the source repository for supervisor via
        `https://github.com/Supervisor/supervisor
        <https://github.com/Supervisor/supervisor>`_.
        
        Contributing
        ------------
        
        If you'd like to contribute to supervisor directly, please contact the
        `Supervisor-users mailing list
        <http://lists.supervisord.org/mailman/listinfo/supervisor-users>`_.
        
        
        
        3.3.5 (2018-12-22)
        ------------------
        
        - Fixed a race condition where ``supervisord`` would cancel a shutdown
          already in progress if it received ``SIGHUP``.  Now, ``supervisord`` will
          ignore ``SIGHUP`` if shutdown is already in progress.  Patch by Livanh.
        
        - Fixed a bug where searching for a relative command ignored changes to
          ``PATH`` made in ``environment=``.  Based on a patch by dongweiming.
        
        - ``childutils.ProcessCommunicationsProtocol`` now does an explit ``flush()``
          after writing to ``stdout``.
        
        - A more descriptive error message is now emitted if a name in the config
          file contains a disallowed character.  Patch by Rick van Hattem.
        
        3.3.4 (2018-02-15)
        ------------------
        
        - Fixed a bug where rereading the configuration would not detect changes to
          eventlisteners.  Patch by Michael Ihde.
        
        - Fixed a bug where the warning ``Supervisord is running as root and it is
          searching for its config file`` may have been incorrectly shown by
          ``supervisorctl`` if its executable name was changed.
        
        - Fixed a bug in the web interface where redirect URLs did not have a slash
          between the host and query string, which caused issues when proxying with
          Nginx.  Patch by Luke Weber.
        
        - When ``supervisord`` successfully drops privileges during startup, it is now
          logged at the ``INFO`` level instead of ``CRIT``.
        
        - The HTTP server now returns a Content-Type header specifying UTF-8 encoding.
          This may fix display issues in some browsers.  Patch by Katenkka.
        
        3.3.3 (2017-07-24)
        ------------------
        
        - Fixed CVE-2017-11610.  A vulnerability was found where an authenticated
          client can send a malicious XML-RPC request to ``supervisord`` that will
          run arbitrary shell commands on the server.  The commands will be run as
          the same user as ``supervisord``.  Depending on how ``supervisord`` has been
          configured, this may be root.  See
          https://github.com/Supervisor/supervisor/issues/964 for details.
        
        3.3.2 (2017-06-03)
        ------------------
        
        - Fixed a bug introduced in 3.3.0 where the ``supervisorctl reload`` command
          would crash ``supervisord`` with the error ``OSError: [Errno 9] Bad file
          descriptor`` if the ``kqueue`` poller was used.  Patch by Jared Suttles.
        
        - Fixed a bug introduced in 3.3.0 where ``supervisord`` could get stuck in a
          polling loop after the web interface was used, causing high CPU usage.
          Patch by Jared Suttles.
        
        - Fixed a bug where if ``supervisord`` attempted to start but aborted due to
          another running instance of ``supervisord`` with the same config, the
          pidfile of the running instance would be deleted.  Patch by coldnight.
        
        - Fixed a bug where ``supervisorctl fg`` would swallow most XML-RPC faults.
          ``fg`` now prints the fault and exits.
        
        - Parsing the config file will now fail with an error message if a process
          or group name contains a forward slash character (``/``) since it would
          break the URLs used by the web interface.
        
        - ``supervisorctl reload`` now shows an error message if an argument is
          given.  Patch by Joel Krauska.
        
        - ``supervisorctl`` commands ``avail``, ``reread``, and ``version`` now show
          an error message if an argument is given.
        
        3.3.1 (2016-08-02)
        ------------------
        
        - Fixed an issue where ``supervisord`` could hang when responding to HTTP
          requests (including ``supervisorctl`` commands) if the system time was set
          back after ``supervisord`` was started.
        
        - Zope ``trackrefs``, a debugging tool that was included in the ``tests``
          directory but hadn't been used for years, has been removed.
        
        3.3.0 (2016-05-14)
        ------------------
        
        - ``supervisord`` will now use ``kqueue``, ``poll``, or ``select`` to monitor
          its file descriptors, in that order, depending on what is available on the
          system.  Previous versions used ``select`` only and would crash with the error
          ``ValueError: filedescriptor out of range in select()`` when running a large
          number of subprocesses (whatever number resulted in enough file descriptors
          to exceed the fixed-size file descriptor table used by ``select``, which is
          typically 1024).  Patch by Igor Sobreira.
        
        - ``/etc/supervisor/supervisord.conf`` has been added to the config file search
          paths.  Many versions of Supervisor packaged for Debian and Ubuntu have
          included a patch that added this path.  This difference was reported in a
          number of tickets as a source of confusion and upgrade difficulties, so the
          path has been added.  Patch by Kelvin Wong.
        
        - Glob patterns in the ``[include]`` section now support the
          ``host_node_name`` expansion.  Patch by Paul Lockaby.
        
        - Files included via the ``[include]`` section are now logged at the ``INFO``
          level instead of ``WARN``.  Patch by Daniel Hahler.
        
        3.2.4 (2017-07-24)
        ------------------
        
        - Backported from Supervisor 3.3.3:  Fixed CVE-2017-11610.  A vulnerability
          was found where an authenticated client can send a malicious XML-RPC request
          to ``supervisord`` that will run arbitrary shell commands on the server.
          The commands will be run as the same user as ``supervisord``.  Depending on
          how ``supervisord`` has been configured, this may be root.  See
          https://github.com/Supervisor/supervisor/issues/964 for details.
        
        3.2.3 (2016-03-19)
        ------------------
        
        - 400 Bad Request is now returned if an XML-RPC request is received with
          invalid body data.  In previous versions, 500 Internal Server Error
          was returned.
        
        3.2.2 (2016-03-04)
        ------------------
        
        - Parsing the config file will now fail with an error message if an
          ``inet_http_server`` or ``unix_http_server`` section contains a ``username=``
          but no ``password=``.  In previous versions, ``supervisord`` would start with
          this invalid configuration but the HTTP server would always return a 500
          Internal Server Error.  Thanks to Chris Ergatides for reporting this issue.
        
        3.2.1 (2016-02-06)
        ------------------
        
        - Fixed a server exception ``OverflowError: int exceeds XML-RPC limits`` that
          made ``supervisorctl status`` unusable if the system time was far into the
          future.  The XML-RPC API returns timestamps as XML-RPC integers, but
          timestamps will exceed the maximum value of an XML-RPC integer in January
          2038 ("Year 2038 Problem").  For now, timestamps exceeding the maximum
          integer will be capped at the maximum to avoid the exception and retain
          compatibility with existing API clients.  In a future version of the API,
          the return type for timestamps will be changed.
        
        3.2.0 (2015-11-30)
        ------------------
        
        - Files included via the ``[include]`` section are read in sorted order.  In
          past versions, the order was undefined.  Patch by Ionel Cristian Mărieș.
        
        - ``supervisorctl start`` and ``supervisorctl stop`` now complete more quickly
          when handling many processes.  Thanks to Chris McDonough for this patch.
          See: https://github.com/Supervisor/supervisor/issues/131
        
        - Environment variables are now expanded for all config file options.
          Patch by Dexter Tad-y.
        
        - Added ``signalProcess``, ``signalProcessGroup``, and ``signalAllProcesses``
          XML-RPC methods to supervisor RPC interface.  Thanks to Casey Callendrello,
          Marc Abramowitz, and Moriyoshi Koizumi for the patches.
        
        - Added ``signal`` command to supervisorctl.  Thanks to Moriyoshi Koizumi and
          Marc Abramowitz for the patches.
        
        - Errors caused by bad values in a config file now show the config section
          to make debugging easier.  Patch by Marc Abramowitz.
        
        - Setting ``redirect_stderr=true`` in an ``[eventlistener:x]`` section is now
          disallowed because any messages written to ``stderr`` would interfere
          with the eventlistener protocol on ``stdout``.
        
        - Fixed a bug where spawning a process could cause ``supervisord`` to crash
          if an ``IOError`` occurred while setting up logging.  One way this could
          happen is if a log filename was accidentally set to a directory instead
          of a file.  Thanks to Grzegorz Nosek for reporting this issue.
        
        - Fixed a bug introduced in 3.1.0 where ``supervisord`` could crash when
          attempting to display a resource limit error.
        
        - Fixed a bug where ``supervisord`` could crash with the message
          ``Assertion failed for processname: RUNNING not in STARTING`` if a time
          change caused the last start time of the process to be in the future.
          Thanks to Róbert Nagy, Sergey Leschenko, and samhair for the patches.
        
        - A warning is now logged if an eventlistener enters the UNKNOWN state,
          which usually indicates a bug in the eventlistener.  Thanks to Steve
          Winton and detailyang for reporting issues that led to this change.
        
        - Errors from the web interface are now logged at the ``ERROR`` level.
          Previously, they were logged at the ``TRACE`` level and easily
          missed.  Thanks to Thomas Güttler for reporting this issue.
        
        - Fixed ``DeprecationWarning: Parameters to load are deprecated. Call
          .resolve and .require separately.`` on setuptools >= 11.3.
        
        - If ``redirect_stderr=true`` and ``stderr_logfile=auto``, no stderr log
          file will be created.  In previous versions, an empty stderr log file
          would be created.  Thanks to Łukasz Kożuchowski for the initial patch.
        
        - Fixed an issue in Medusa that would cause ``supervisorctl tail -f`` to
          disconnect if many other ``supervisorctl`` commands were run in parallel.
          Patch by Stefan Friesel.
        
        3.1.4 (2017-07-24)
        ------------------
        
        - Backported from Supervisor 3.3.3:  Fixed CVE-2017-11610.  A vulnerability
          was found where an authenticated client can send a malicious XML-RPC request
          to ``supervisord`` that will run arbitrary shell commands on the server.
          The commands will be run as the same user as ``supervisord``.  Depending on
          how ``supervisord`` has been configured, this may be root.  See
          https://github.com/Supervisor/supervisor/issues/964 for details.
        
        3.1.3 (2014-10-28)
        ------------------
        
        - Fixed an XML-RPC bug where the ElementTree-based parser handled strings
          like ``<value><string>hello</string></value>`` but not strings like
          ``<value>hello</value>``, which are valid in the XML-RPC spec.  This
          fixes compatibility with the Apache XML-RPC client for Java and
          possibly other clients.
        
        3.1.2 (2014-09-07)
        ------------------
        
        - Fixed a bug where ``tail group:*`` in ``supervisorctl`` would show a 500
          Internal Server Error rather than a BAD_NAME fault.
        
        - Fixed a bug where the web interface would show a 500 Internal Server Error
          instead of an error message for some process start faults.
        
        - Removed medusa files not used by Supervisor.
        
        3.1.1 (2014-08-11)
        ------------------
        
        - Fixed a bug where ``supervisorctl tail -f name`` output would stop if log
          rotation occurred while tailing.
        
        - Prevent a crash when a greater number of file descriptors were attempted to
          be opened than permitted by the environment when starting a bunch of
          programs.  Now, instead a spawn error is logged.
        
        - Compute "channel delay" properly, fixing symptoms where a supervisorctl
          start command would hang for a very long time when a process (or many
          processes) are spewing to their stdout or stderr.  See comments attached to
          https://github.com/Supervisor/supervisor/pull/263 .
        
        - Added ``docs/conf.py``, ``docs/Makefile``, and ``supervisor/scripts/*.py``
          to the release package.
        
        3.1.0 (2014-07-29)
        ------------------
        
        - The output of the ``start``, ``stop``, ``restart``, and ``clear`` commands
          in ``supervisorctl`` has been changed to be consistent with the ``status``
          command.  Previously, the ``status`` command would show a process like
          ``foo:foo_01`` but starting that process would show ``foo_01: started``
          (note the group prefix ``foo:`` was missing).  Now, starting the process
          will show ``foo:foo_01: started``.  Suggested by Chris Wood.
        
        - The ``status`` command in ``supervisorctl`` now supports group name
          syntax: ``status group:*``.
        
        - The process column in the table output by the ``status`` command in
          ``supervisorctl`` now expands to fit the widest name.
        
        - The ``update`` command in ``supervisorctl`` now accepts optional group
          names.  When group names are specified, only those groups will be
          updated.  Patch by Gary M. Josack.
        
        - Tab completion in ``supervisorctl`` has been improved and now works for
          more cases.  Thanks to Mathieu Longtin and Marc Abramowitz for the patches.
        
        - Attempting to start or stop a process group in ``supervisorctl`` with the
          ``group:*`` syntax will now show the same error message as the ``process``
          syntax if the name does not exist.  Previously, it would show a Python
          exception.  Patch by George Ang.
        
        - Added new ``PROCESS_GROUP_ADDED`` and ``PROCESS_GROUP_REMOVED`` events.
          These events are fired when process groups are added or removed from
          Supervisor's runtime configuration when using the ``add`` and ``remove``
          commands in ``supervisorctl``.  Patch by Brent Tubbs.
        
        - Stopping a process in the backoff state now changes it to the stopped
          state.  Previously, an attempt to stop a process in backoff would be
          ignored.  Patch by Pascal Varet.
        
        - The ``directory`` option is now expanded separately for each process in
          a homogeneous process group.  This allows each process to have its own
          working directory.  Patch by Perttu Ranta-aho.
        
        - Removed ``setuptools`` from the ``requires`` list in ``setup.py`` because
          it caused installation issues on some systems.
        
        - Fixed a bug in Medusa where the HTTP Basic authorizer would cause an
          exception if the password contained a colon.  Thanks to Thomas Güttler
          for reporting this issue.
        
        - Fixed an XML-RPC bug where calling supervisor.clearProcessLogs() with a
          name like ``group:*`` would cause a 500 Internal Server Error rather than
          returning a BAD_NAME fault.
        
        - Fixed a hang that could occur in ``supervisord`` if log rotation is used
          and an outside program deletes an active log file.  Patch by Magnus Lycka.
        
        - A warning is now logged if a glob pattern in an ``[include]`` section does
          not match any files.  Patch by Daniel Hahler.
        
        3.0.1 (2017-07-24)
        ------------------
        
        - Backported from Supervisor 3.3.3:  Fixed CVE-2017-11610.  A vulnerability
          was found where an authenticated client can send a malicious XML-RPC request
          to ``supervisord`` that will run arbitrary shell commands on the server.
          The commands will be run as the same user as ``supervisord``.  Depending on
          how ``supervisord`` has been configured, this may be root.  See
          https://github.com/Supervisor/supervisor/issues/964 for details.
        
        3.0 (2013-07-30)
        ----------------
        
        - Parsing the config file will now fail with an error message if a process
          or group name contains characters that are not compatible with the
          eventlistener protocol.
        
        - Fixed a bug where the ``tail -f`` command in ``supervisorctl`` would fail
          if the combined length of the username and password was over 56 characters.
        
        - Reading the config file now gives a separate error message when the config
          file exists but can't be read.  Previously, any error reading the file
          would be reported as "could not find config file".  Patch by Jens Rantil.
        
        - Fixed an XML-RPC bug where array elements after the first would be ignored
          when using the ElementTree-based XML parser.  Patch by Zev Benjamin.
        
        - Fixed the usage message output by ``supervisorctl`` to show the correct
          default config file path.  Patch by Alek Storm.
        
        3.0b2 (2013-05-28)
        ------------------
        
        - The behavior of the program option ``user`` has changed.  In all previous
          versions, if ``supervisord`` failed to switch to the user, a warning would
          be sent to the stderr log but the child process would still be spawned.
          This means that a mistake in the config file could result in a child
          process being unintentionally spawned as root.  Now, ``supervisord`` will
          not spawn the child unless it was able to successfully switch to the user.
          Thanks to Igor Partola for reporting this issue.
        
        - If a user specified in the config file does not exist on the system,
          ``supervisord`` will now print an error and refuse to start.
        
        - Reverted a change to logging introduced in 3.0b1 that was intended to allow
          multiple processes to log to the same file with the rotating log handler.
          The implementation caused supervisord to crash during reload and to leak
          file handles.  Also, since log rotation options are given on a per-program
          basis, impossible configurations could be created (conflicting rotation
          options for the same file).  Given this and that supervisord now has syslog
          support, it was decided to remove this feature.  A warning was added to the
          documentation that two processes may not log to the same file.
        
        - Fixed a bug where parsing ``command=`` could cause supervisord to crash if
          shlex.split() fails, such as a bad quoting.  Patch by Scott Wilson.
        
        - It is now possible to use ``supervisorctl`` on a machine with no
          ``supervisord.conf`` file by supplying the connection information in
          command line options.  Patch by Jens Rantil.
        
        - Fixed a bug where supervisord would crash if the syslog handler was used
          and supervisord received SIGUSR2 (log reopen request).
        
        - Fixed an XML-RPC bug where calling supervisor.getProcessInfo() with a bad
          name would cause a 500 Internal Server Error rather than the returning
          a BAD_NAME fault.
        
        - Added a favicon to the web interface.  Patch by Caio Ariede.
        
        - Fixed a test failure due to incorrect handling of daylight savings time
          in the childutils tests.  Patch by Ildar Hizbulin.
        
        - Fixed a number of pyflakes warnings for unused variables, imports, and
          dead code.  Patch by Philippe Ombredanne.
        
        3.0b1 (2012-09-10)
        ------------------
        
        - Fixed a bug where parsing ``environment=`` did not verify that key/value
          pairs were correctly separated.  Patch by Martijn Pieters.
        
        - Fixed a bug in the HTTP server code that could cause unnecessary delays
          when sending large responses.  Patch by Philip Zeyliger.
        
        - When supervisord starts up as root, if the ``-c`` flag was not provided, a
          warning is now emitted to the console.  Rationale: supervisord looks in the
          current working directory for a ``supervisord.conf`` file; someone might
          trick the root user into starting supervisord while cd'ed into a directory
          that has a rogue ``supervisord.conf``.
        
        - A warning was added to the documentation about the security implications of
          starting supervisord without the ``-c`` flag.
        
        - Add a boolean program option ``stopasgroup``, defaulting to false.
          When true, the flag causes supervisor to send the stop signal to the
          whole process group.  This is useful for programs, such as Flask in debug
          mode, that do not propagate stop signals to their children, leaving them
          orphaned.
        
        - Python 2.3 is no longer supported.  The last version that supported Python
          2.3 is Supervisor 3.0a12.
        
        - Removed the unused "supervisor_rpc" entry point from setup.py.
        
        - Fixed a bug in the rotating log handler that would cause unexpected
          results when two processes were set to log to the same file.  Patch
          by Whit Morriss.
        
        - Fixed a bug in config file reloading where each reload could leak memory
          because a list of warning messages would be appended but never cleared.
          Patch by Philip Zeyliger.
        
        - Added a new Syslog log handler.  Thanks to Denis Bilenko, Nathan L. Smith,
          and Jason R. Coombs, who each contributed to the patch.
        
        - Put all change history into a single file (CHANGES.txt).
        
        3.0a12 (2011-12-06)
        -------------------
        
        - Released to replace a broken 3.0a11 package where non-Python files were
          not included in the package.
        
        3.0a11 (2011-12-06)
        -------------------
        
        - Added a new file, ``PLUGINS.rst``, with a listing of third-party plugins
          for Supervisor.  Contributed by Jens Rantil.
        
        - The ``pid`` command in supervisorctl can now be used to retrieve the PIDs
          of child processes.  See ``help pid``.  Patch by Gregory Wisniewski.
        
        - Added a new ``host_node_name`` expansion that will be expanded to the
          value returned by Python's ``platform.node`` (see
          http://docs.python.org/library/platform.html#platform.node).
          Patch by Joseph Kondel.
        
        - Fixed a bug in the web interface where pages over 64K would be truncated.
          Thanks to Drew Perttula and Timothy Jones for reporting this.
        
        - Renamed ``README.txt`` to ``README.rst`` so GitHub renders the file as
          ReStructuredText.
        
        - The XML-RPC server is now compatible with clients that do not send empty
          <params> when there are no parameters for the method call.  Thanks to
          Johannes Becker for reporting this.
        
        - Fixed ``supervisorctl --help`` output to show the correct program name.
        
        - The behavior of the configuration options ``minfds`` and ``minprocs`` has
          changed.  Previously, if a hard limit was less than ``minfds`` or
          ``minprocs``, supervisord would unconditionally abort with an error.  Now,
          supervisord will attempt to raise the hard limit.  This may succeed if
          supervisord is run as root, otherwise the error is printed as before.
          Patch by Benoit Sigoure.
        
        - Add a boolean program option ``killasgroup``, defaulting to false,
          if true when resorting to send SIGKILL to stop/terminate the process
          send it to its whole process group instead to take care of possible
          children as well and not leave them behind.  Patch by Samuele Pedroni.
        
        - Environment variables may now be used in the configuration file
          for options that support string expansion.  Patch by Aleksey Sivokon.
        
        - Fixed a race condition where supervisord might not act on a signal sent
          to it.  Thanks to Adar Dembo for reporting the issue and supplying the
          initial patch.
        
        - Updated the output of ``echo_supervisord_conf`` to fix typos and
          improve comments.  Thanks to Jens Rantil for noticing these.
        
        - Fixed a possible 500 Server Error from the web interface.  This was
          observed when using Supervisor on a domain socket behind Nginx, where
          Supervisor would raise an exception because REMOTE_ADDR was not set.
          Patch by David Bennett.
        
        3.0a10 (2011-03-30)
        -------------------
        
        - Fixed the stylesheet of the web interface so the footer line won't overlap
          a long process list.  Thanks to Derek DeVries for the patch.
        
        - Allow rpc interface plugins to register new events types.
        
        - Bug fix for FCGI sockets not getting cleaned up when the ``reload`` command
          is issued from supervisorctl.  Also, the default behavior has changed for
          FCGI sockets.  They are now closed whenever the number of running processes
          in a group hits zero.  Previously, the sockets were kept open unless a
          group-level stop command was issued.
        
        - Better error message when HTTP server cannot reverse-resolve a hostname to
          an IP address.  Previous behavior: show a socket error.  Current behavior:
          spit out a suggestion to stdout.
        
        - Environment variables set via ``environment=`` value within
          ``[supervisord]`` section had no effect.  Thanks to Wyatt Baldwin
          for a patch.
        
        - Fix bug where stopping process would cause process output that happened
          after the stop request was issued to be lost.  See
          https://github.com/Supervisor/supervisor/issues/11.
        
        - Moved 2.X change log entries into ``HISTORY.txt``.
        
        - Converted ``CHANGES.txt`` and ``README.txt`` into proper ReStructuredText
          and included them in the ``long_description`` in ``setup.py``.
        
        - Added a tox.ini to the package (run via ``tox`` in the package dir).  Tests
          supervisor on multiple Python versions.
        
        3.0a9 (2010-08-13)
        ------------------
        
        - Use rich comparison methods rather than __cmp__ to sort process configs and
          process group configs to better straddle Python versions.  (thanks to
          Jonathan Riboux for identifying the problem and supplying an initial
          patch).
        
        - Fixed test_supervisorctl.test_maintail_dashf test for Python 2.7.  (thanks
          to Jonathan Riboux for identifying the problem and supplying an initial
          patch).
        
        - Fixed the way that supervisor.datatypes.url computes a "good" URL
          for compatibility with Python 2.7 and Python >= 2.6.5.  URLs with
          bogus "schemes://" will now be accepted as a version-straddling
          compromise (before they were rejected before supervisor would
          start).  (thanks to Jonathan Riboux for identifying the problem
          and supplying an initial patch).
        
        - Add a ``-v`` / ``--version`` option to supervisord: Print the
          supervisord version number out to stdout and exit.  (Roger Hoover)
        
        - Import iterparse from xml.etree when available (eg: Python 2.6).  Patch
          by Sidnei da Silva.
        
        - Fixed the url to the supervisor-users mailing list.  Patch by
          Sidnei da Silva
        
        - When parsing "environment=" in the config file, changes introduced in
          3.0a8 prevented Supervisor from parsing some characters commonly
          found in paths unless quoting was used as in this example::
        
            environment=HOME='/home/auser'
        
          Supervisor once again allows the above line to be written as::
        
            environment=HOME=/home/auser
        
          Alphanumeric characters, "_", "/", ".", "+", "-", "(", ")", and ":" can all
          be used as a value without quoting. If any other characters are needed in
          the value, please quote it as in the first example above.  Thanks to Paul
          Heideman for reporting this issue.
        
        - Supervisor will now look for its config file in locations relative to the
          executable path, allowing it to be used more easily in virtual
          environments.  If sys.argv[0] is ``/path/to/venv/bin/supervisorctl``,
          supervisor will now look for it's config file in
          ``/path/to/venv/etc/supervisord.conf`` and
          ``/path/to/venv/supervisord.conf`` in addition to the other standard
          locations.  Patch by Chris Rossi.
        
        3.0a8 (2010-01-20)
        ------------------
        
        - Don't cleanup file descriptors on first supervisord invocation:
          this is a lame workaround for Snow Leopard systems that use
          libdispatch and are receiving "Illegal instruction" messages at
          supervisord startup time.  Restarting supervisord via
          "supervisorctl restart" may still cause a crash on these systems.
        
        - Got rid of Medusa hashbang headers in various files to ease RPM
          packaging.
        
        - Allow umask to be 000 (patch contributed by Rowan Nairn).
        
        - Fixed a bug introduced in 3.0a7 where supervisorctl wouldn't ask
          for a username/password combination properly from a
          password-protected supervisord if it wasn't filled in within the
          "[supervisorctl]" section username/password values.  It now
          properly asks for a username and password.
        
        - Fixed a bug introduced in 3.0a7 where setup.py would not detect the
          Python version correctly.  Patch by Daniele Paolella.
        
        - Fixed a bug introduced in 3.0a7 where parsing a string of key/value
          pairs failed on Python 2.3 due to use of regular expression syntax
          introduced in Python 2.4.
        
        - Removed the test suite for the ``memmon`` console script, which was
          moved to the Superlance package in 3.0a7.
        
        - Added release dates to CHANGES.txt.
        
        - Reloading the config for an fcgi process group did not close the fcgi
          socket - now, the socket is closed whenever the group is stopped as a unit
          (including during config update). However, if you stop all the processes
          in a group individually, the socket will remain open to allow for graceful
          restarts of FCGI daemons.  (Roger Hoover)
        
        - Rereading the config did not pick up changes to the socket parameter in a
          fcgi-program section.  (Roger Hoover)
        
        - Made a more friendly exception message when a FCGI socket cannot be
          created.  (Roger Hoover)
        
        - Fixed a bug where the --serverurl option of supervisorctl would not
          accept a URL with a "unix" scheme.  (Jason Kirtland)
        
        - Running the tests now requires the "mock" package.  This dependency has
          been added to "tests_require" in setup.py.  (Roger Hoover)
        
        - Added support for setting the ownership and permissions for an FCGI socket.
          This is done using new "socket_owner" and "socket_mode" options in an
          [fcgi-program:x] section.  See the manual for details.  (Roger Hoover)
        
        - Fixed a bug where the FCGI socket reference count was not getting
          decremented on spawn error.  (Roger Hoover)
        
        - Fixed a Python 2.6 deprecation warning on use of the "sha" module.
        
        - Updated ez_setup.py to one that knows about setuptools 0.6c11.
        
        - Running "supervisorctl shutdown" no longer dumps a Python backtrace
          when it can't connect to supervisord on the expected socket.  Thanks
          to Benjamin Smith for reporting this.
        
        - Removed use of collections.deque in our bundled version of asynchat
          because it broke compatibility with Python 2.3.
        
        - The sample configuration output by "echo_supervisord_conf" now correctly
          shows the default for "autorestart" as "unexpected".  Thanks to
          William Dode for noticing it showed the wrong value.
        
        3.0a7 (2009-05-24)
        ------------------
        
        - We now bundle our own patched version of Medusa contributed by Jason
          Kirtland to allow Supervisor to run on Python 2.6.  This was done
          because Python 2.6 introduced backwards incompatible changes to
          asyncore and asynchat in the stdlib.
        
        - The console script ``memmon``, introduced in Supervisor 3.0a4, has
          been moved to Superlance (http://pypi.python.org/pypi/superlance).
          The Superlance package contains other useful monitoring tools designed
          to run under Supervisor.
        
        - Supervisorctl now correctly interprets all of the error codes that can
          be returned when starting a process.  Patch by Francesc Alted.
        
        - New ``stdout_events_enabled`` and ``stderr_events_enabled`` config options
          have been added to the ``[program:x]``, ``[fcgi-program:x]``, and
          ``[eventlistener:x]`` sections.  These enable the emitting of new
          PROCESS_LOG events for a program.  If unspecified, the default is False.
        
          If enabled for a subprocess, and data is received from the stdout or
          stderr of the subprocess while not in the special capture mode used by
          PROCESS_COMMUNICATION, an event will be emitted.
        
          Event listeners can subscribe to either PROCESS_LOG_STDOUT or
          PROCESS_LOG_STDERR individually, or PROCESS_LOG for both.
        
        - Values for subprocess environment variables specified with environment=
          in supervisord.conf can now be optionally quoted, allowing them to
          contain commas.  Patch by Tim Godfrey.
        
        - Added a new event type, REMOTE_COMMUNICATION, that is emitted by a new
          RPC method, supervisor.sendRemoteCommEvent().
        
        - Patch for bug #268 (KeyError on ``here`` expansion for
          stdout/stderr_logfile) from David E. Kindred.
        
        - Add ``reread``, ``update``, and ``avail`` commands based on Anders
          Quist's ``online_config_reload.diff`` patch.  This patch extends
          the "add" and "drop" commands with automagical behavior::
        
            In supervisorctl:
        
              supervisor> status
              bar                              RUNNING    pid 14864, uptime 18:03:42
              baz                              RUNNING    pid 23260, uptime 0:10:16
              foo                              RUNNING    pid 14866, uptime 18:03:42
              gazonk                           RUNNING    pid 23261, uptime 0:10:16
              supervisor> avail
              bar                              in use    auto      999:999
              baz                              in use    auto      999:999
              foo                              in use    auto      999:999
              gazonk                           in use    auto      999:999
              quux                             avail     auto      999:999
        
            Now we add this to our conf:
        
              [group:zegroup]
              programs=baz,gazonk
        
            Then we reread conf:
        
              supervisor> reread
              baz: disappeared
              gazonk: disappeared
              quux: available
              zegroup: available
              supervisor> avail
              bar                              in use    auto      999:999
              foo                              in use    auto      999:999
              quux                             avail     auto      999:999
              zegroup:baz                      avail     auto      999:999
              zegroup:gazonk                   avail     auto      999:999
              supervisor> status
              bar                              RUNNING    pid 14864, uptime 18:04:18
              baz                              RUNNING    pid 23260, uptime 0:10:52
              foo                              RUNNING    pid 14866, uptime 18:04:18
              gazonk                           RUNNING    pid 23261, uptime 0:10:52
        
            The magic make-it-so command:
        
              supervisor> update
              baz: stopped
              baz: removed process group
              gazonk: stopped
              gazonk: removed process group
              zegroup: added process group
              quux: added process group
              supervisor> status
              bar                              RUNNING    pid 14864, uptime 18:04:43
              foo                              RUNNING    pid 14866, uptime 18:04:43
              quux                             RUNNING    pid 23561, uptime 0:00:02
              zegroup:baz                      RUNNING    pid 23559, uptime 0:00:02
              zegroup:gazonk                   RUNNING    pid 23560, uptime 0:00:02
              supervisor> avail
              bar                              in use    auto      999:999
              foo                              in use    auto      999:999
              quux                             in use    auto      999:999
              zegroup:baz                      in use    auto      999:999
              zegroup:gazonk                   in use    auto      999:999
        
        - Fix bug with symptom "KeyError: 'process_name'" when using a logfile name
          including documented``process_name`` Python string expansions.
        
        - Tab completions in the supervisorctl shell, and a foreground mode for
          Supervisor, implemented as a part of GSoC.  The supervisorctl program now
          has a ``fg`` command, which makes it possible to supply inputs to a
          process, and see its output/error stream in real time.
        
        - Process config reloading implemented by Anders Quist.  The
          supervisorctl program now has the commands "add" and "drop".
          "add <programname>" adds the process group implied by <programname>
          in the config file.  "drop <programname>" removes the process
          group from the running configuration (it must already be stopped).
          This makes it possible to add processes to and remove processes from
          a running supervisord without restarting the supervisord process.
        
        - Fixed a bug where opening the HTTP servers would fail silently
          for socket errors other than errno.EADDRINUSE.
        
        - Thanks to Dave Peticolas, using "reload" against a supervisord
          that is running in the background no longer causes supervisord
          to crash.
        
        - Configuration options for logfiles now accept mixed case reserved
          words (e.g. "AUTO" or "auto") for consistency with other options.
        
        - childutils.eventdata was buggy, it could not deal with carriage returns
          in data.  See http://www.plope.com/software/collector/257.  Thanks
          to Ian Bicking.
        
        - Per-process exitcodes= configuration now will not accept exit
          codes that are not 8-bit unsigned integers (supervisord will not
          start when one of the exit codes is outside the range of 0 - 255).
        
        - Per-process ``directory`` value can now contain expandable values like
          ``%(here)s``. (See http://www.plope.com/software/collector/262).
        
        - Accepted patch from Roger Hoover to allow for a new sort of
          process group: "fcgi-program".  Adding one of these to your
          supervisord.conf allows you to control fastcgi programs.  FastCGI
          programs cannot belong to heterogenous groups.
        
          The configuration for FastCGI programs is the same as regular programs
          except an additional "socket" parameter.  Substitution happens on the
          socket parameter with the ``here`` and ``program_name`` variables::
        
           [fcgi-program:fcgi_test]
           ;socket=tcp://localhost:8002
           socket=unix:///path/to/fcgi/socket
        
        - Supervisorctl now supports a plugin model for supervisorctl
          commands.
        
        - Added the ability to retrieve supervisord's own pid through
          supervisor.getPID() on the XML-RPC interface or a new
          "pid" command on supervisorctl.
        
        3.0a6 (2008-04-07)
        ------------------
        
        - The RotatingFileLogger had a race condition in its doRollover
          method whereby a file might not actually exist despite a call to
          os.path.exists on the line above a place where we try to remove
          it.  We catch the exception now and ignore the missing file.
        
        3.0a5 (2008-03-13)
        ------------------
        
        - Supervisorctl now supports persistent readline history.  To
          enable, add "history_file = <pathname>" to the ``[supervisorctl]``
          section in your supervisord.conf file.
        
        - Multiple commands may now be issued on one supervisorctl command
          line, e.g. "restart prog; tail -f prog".  Separate commands with a
          single semicolon; they will be executed in order as you would
          expect.
        
        3.0a4 (2008-01-30)
        ------------------
        
        - 3.0a3 broke Python 2.3 backwards compatibility.
        
        - On Debian Sarge, one user reported that a call to
          options.mktempfile would fail with an "[Errno 9] Bad file
          descriptor" at supervisord startup time.  I was unable to
          reproduce this, but we found a workaround that seemed to work for
          him and it's included in this release.  See
          http://www.plope.com/software/collector/252 for more information.
          Thanks to William Dode.
        
        - The fault ``ALREADY_TERMINATED`` has been removed.  It was only raised by
          supervisor.sendProcessStdin().  That method now returns ``NOT_RUNNING``
          for parity with the other methods. (Mike Naberezny)
        
        - The fault TIMED_OUT has been removed.  It was not used.
        
        - Supervisor now depends on meld3 0.6.4, which does not compile its
          C extensions by default, so there is no more need to faff around
          with NO_MELD3_EXTENSION_MODULES during installation if you don't
          have a C compiler or the Python development libraries on your
          system.
        
        - Instead of making a user root around for the sample.conf file,
          provide a convenience command "echo_supervisord_conf", which he can
          use to echo the sample.conf to his terminal (and redirect to a file
          appropriately).  This is a new user convenience (especially one who
          has no Python experience).
        
        - Added ``numprocs_start`` config option to ``[program:x]`` and
          ``[eventlistener:x]`` sections.  This is an offset used to compute
          the first integer that ``numprocs`` will begin to start from.
          Contributed by Antonio Beamud Montero.
        
        - Added capability for ``[include]`` config section to config format.
          This section must contain a single key "files", which must name a
          space-separated list of file globs that will be included in
          supervisor's configuration.  Contributed by Ian Bicking.
        
        - Invoking the ``reload`` supervisorctl command could trigger a bug in
          supervisord which caused it to crash.  See
          http://www.plope.com/software/collector/253 .  Thanks to William Dode for
          a bug report.
        
        - The ``pidproxy`` script was made into a console script.
        
        - The ``password`` value in both the ``[inet_http_server]`` and
          ``[unix_http_server]`` sections can now optionally be specified as a SHA
          hexdigest instead of as cleartext.  Values prefixed with ``{SHA}`` will be
          considered SHA hex digests.  To encrypt a password to a form suitable for
          pasting into the configuration file using Python, do, e.g.::
        
             >>> import sha
             >>> '{SHA}' + sha.new('thepassword').hexdigest()
             '{SHA}82ab876d1387bfafe46cc1c8a2ef074eae50cb1d'
        
        - The subtypes of the events PROCESS_STATE_CHANGE (and
          PROCESS_STATE_CHANGE itself) have been removed, replaced with a
          simpler set of PROCESS_STATE subscribable event types.
        
          The new event types are:
        
            PROCESS_STATE_STOPPED
            PROCESS_STATE_EXITED
            PROCESS_STATE_STARTING
            PROCESS_STATE_STOPPING
            PROCESS_STATE_BACKOFF
            PROCESS_STATE_FATAL
            PROCESS_STATE_RUNNING
            PROCESS_STATE_UNKNOWN
            PROCESS_STATE # abstract
        
          PROCESS_STATE_STARTING replaces:
        
            PROCESS_STATE_CHANGE_STARTING_FROM_STOPPED
            PROCESS_STATE_CHANGE_STARTING_FROM_BACKOFF
            PROCESS_STATE_CHANGE_STARTING_FROM_EXITED
            PROCESS_STATE_CHANGE_STARTING_FROM_FATAL
        
          PROCESS_STATE_RUNNING replaces
          PROCESS_STATE_CHANGE_RUNNING_FROM_STARTED
        
          PROCESS_STATE_BACKOFF replaces
          PROCESS_STATE_CHANGE_BACKOFF_FROM_STARTING
        
          PROCESS_STATE_STOPPING replaces:
        
            PROCESS_STATE_CHANGE_STOPPING_FROM_RUNNING
            PROCESS_STATE_CHANGE_STOPPING_FROM_STARTING
        
          PROCESS_STATE_EXITED replaces
          PROCESS_STATE_CHANGE_EXITED_FROM_RUNNING
        
          PROCESS_STATE_STOPPED replaces
          PROCESS_STATE_CHANGE_STOPPED_FROM_STOPPING
        
          PROCESS_STATE_FATAL replaces
          PROCESS_STATE_CHANGE_FATAL_FROM_BACKOFF
        
          PROCESS_STATE_UNKNOWN replaces PROCESS_STATE_CHANGE_TO_UNKNOWN
        
          PROCESS_STATE replaces PROCESS_STATE_CHANGE
        
          The PROCESS_STATE_CHANGE_EXITED_OR_STOPPED abstract event is gone.
        
          All process state changes have at least "processname",
          "groupname", and "from_state" (the name of the previous state) in
          their serializations.
        
          PROCESS_STATE_EXITED additionally has "expected" (1 or 0) and "pid"
          (the process id) in its serialization.
        
          PROCESS_STATE_RUNNING, PROCESS_STATE_STOPPING,
          PROCESS_STATE_STOPPED additionally have "pid" in their
          serializations.
        
          PROCESS_STATE_STARTING and PROCESS_STATE_BACKOFF have "tries" in
          their serialization (initially "0", bumped +1 each time a start
          retry happens).
        
        - Remove documentation from README.txt, point people to
          http://supervisord.org/manual/ .
        
        - The eventlistener request/response protocol has changed.  OK/FAIL
          must now be wrapped in a RESULT envelope so we can use it for more
          specialized communications.
        
          Previously, to signify success, an event listener would write the string
          ``OK\n`` to its stdout.  To signify that the event was seen but couldn't
          be handled by the listener and should be rebuffered, an event listener
          would write the string ``FAIL\n`` to its stdout.
        
          In the new protocol, the listener must write the string::
        
            RESULT {resultlen}\n{result}
        
          For example, to signify OK::
        
            RESULT 2\nOK
        
          To signify FAIL::
        
            RESULT 4\nFAIL
        
          See the scripts/sample_eventlistener.py script for an example.
        
        - To provide a hook point for custom results returned from event
          handlers (see above) the [eventlistener:x] configuration sections
          now accept a "result_handler=" parameter,
          e.g. "result_handler=supervisor.dispatchers:default_handler" (the
          default) or "handler=mypackage:myhandler".  The keys are pkgutil
          "entry point" specifications (importable Python function names).
          Result handlers must be callables which accept two arguments: one
          named "event" which represents the event, and the other named
          "result", which represents the listener's result.  A result
          handler either executes successfully or raises an exception.  If
          it raises a supervisor.dispatchers.RejectEvent exception, the
          event will be rebuffered, and the eventhandler will be placed back
          into the ACKNOWLEDGED state.  If it raises any other exception,
          the event handler will be placed in the UNKNOWN state.  If it does
          not raise any exception, the event is considered successfully
          processed.  A result handler's return value is ignored.  Writing a
          result handler is a "in case of emergency break glass" sort of
          thing, it is not something to be used for arbitrary business code.
          In particular, handlers *must not block* for any appreciable
          amount of time.
        
          The standard eventlistener result handler
          (supervisor.dispatchers:default_handler) does nothing if it receives an
          "OK" and will raise a supervisor.dispatchers.RejectEvent exception if it
          receives any other value.
        
        - Supervisord now emits TICK events, which happen every N seconds.
          Three types of TICK events are available: TICK_5 (every five
          seconds), TICK_60 (every minute), TICK_3600 (every hour).  Event
          listeners may subscribe to one of these types of events to perform
          every-so-often processing.  TICK events are subtypes of the EVENT
          type.
        
        - Get rid of OSX platform-specific memory monitor and replace with
          memmon.py, which works on both Linux and Mac OS.  This script is
          now a console script named "memmon".
        
        - Allow "web handler" (the handler which receives http requests from
          browsers visiting the web UI of supervisor) to deal with POST requests.
        
        - RPC interface methods stopProcess(), stopProcessGroup(), and
          stopAllProcesses() now take an optional "wait" argument that defaults
          to True for parity with the start methods.
        
        3.0a3 (2007-10-02)
        ------------------
        
        - Supervisorctl now reports a better error message when the main supervisor
          XML-RPC namespace is not registered.  Thanks to Mike Orr for reporting
          this. (Mike Naberezny)
        
        - Create ``scripts`` directory within supervisor package, move
          ``pidproxy.py`` there, and place sample event listener and comm event
          programs within the directory.
        
        - When an event notification is buffered (either because a listener rejected
          it or because all listeners were busy when we attempted to send it
          originally), we now rebuffer it in a way that will result in it being
          retried earlier than it used to be.
        
        - When a listener process exits (unexpectedly) before transitioning from the
          BUSY state, rebuffer the event that was being processed.
        
        - supervisorctl ``tail`` command now accepts a trailing specifier: ``stderr``
          or ``stdout``, which respectively, allow a user to tail the stderr or
          stdout of the named process.  When this specifier is not provided, tail
          defaults to stdout.
        
        - supervisor ``clear`` command now clears both stderr and stdout logs for the
          given process.
        
        - When a process encounters a spawn error as a result of a failed execve or
          when it cannot setuid to a given uid, it now puts this info into the
          process' stderr log rather than its stdout log.
        
        - The event listener protocol header now contains the ``server`` identifier,
          the ``pool`` that the event emanated from, and the ``poolserial`` as well
          as the values it previously contained (version, event name, serial, and
          length).  The server identifier is taken from the config file options value
          ``identifier``, the ``pool`` value is the name of the listener pool that
          this event emanates from, and the ``poolserial`` is a serial number
          assigned to the event local to the pool that is processing it.
        
        - The event listener protocol header is now a sequence of key-value
          pairs rather than a list of positional values.  Previously, a
          representative header looked like::
        
            SUPERVISOR3.0 PROCESS_COMMUNICATION_STDOUT 30 22\n
        
          Now it looks like::
        
            ver:3.0 server:supervisor serial:21 ...
        
        - Specific event payload serializations have changed.  All event
          types that deal with processes now include the pid of the process
          that the event is describing.  In event serialization "header"
          values, we've removed the space between the header name and the
          value and headers are now separated by a space instead of a line
          feed.  The names of keys in all event types have had underscores
          removed.
        
        - Abandon the use of the Python stdlib ``logging`` module for speed
          and cleanliness purposes.  We've rolled our own.
        
        - Fix crash on start if AUTO logging is used with a max_bytes of
          zero for a process.
        
        - Improve process communication event performance.
        
        - The process config parameters ``stdout_capturefile`` and
          ``stderr_capturefile`` are no longer valid.  They have been replaced with
          the ``stdout_capture_maxbytes`` and ``stderr_capture_maxbytes`` parameters,
          which are meant to be suffix-multiplied integers.  They both default to
          zero.  When they are zero, process communication event capturing is not
          performed.  When either is nonzero, the value represents the maximum number
          of bytes that will be captured between process event start and end tags.
          This change was to support the fact that we no longer keep capture data in
          a separate file, we just use a FIFO in RAM to maintain capture info.  For
          users whom don't care about process communication events, or whom haven't
          changed the defaults for ``stdout_capturefile`` or ``stderr_capturefile``,
          they needn't do anything to their configurations to deal with this change.
        
        - Log message levels have been normalized.  In particular, process
          stdin/stdout is now logged at ``debug`` level rather than at ``trace``
          level (``trace`` level is now reserved for output useful typically for
          debugging supervisor itself).  See "Supervisor Log Levels" in the
          documentation for more info.
        
        - When an event is rebuffered (because all listeners are busy or a
          listener rejected the event), the rebuffered event is now inserted
          in the head of the listener event queue.  This doesn't guarantee
          event emission in natural ordering, because if a listener rejects
          an event or dies while it's processing an event, it can take an
          arbitrary amount of time for the event to be rebuffered, and other
          events may be processed in the meantime.  But if pool listeners
          never reject an event or don't die while processing an event, this
          guarantees that events will be emitted in the order that they were
          received because if all listeners are busy, the rebuffered event
          will be tried again "first" on the next go-around.
        
        - Removed EVENT_BUFFER_OVERFLOW event type.
        
        - The supervisorctl xmlrpc proxy can now communicate with
          supervisord using a persistent HTTP connection.
        
        - A new module "supervisor.childutils" was added.  This module
          provides utilities for Python scripts which act as children of
          supervisord.  Most notably, it contains an API method
          "getRPCInterface" allows you to obtain an xmlrpclib ServerProxy
          that is willing to communicate with the parent supervisor.  It
          also contains utility functions that allow for parsing of
          supervisor event listener protocol headers.  A pair of scripts
          (loop_eventgen.py and loop_listener.py) were added to the script
          directory that serve as examples about how to use the childutils
          module.
        
        - A new envvar is added to child process environments:
          SUPERVISOR_SERVER_URL.  This contains the server URL for the
          supervisord running the child.
        
        - An ``OK`` URL was added at ``/ok.html`` which just returns the string
          ``OK`` (can be used for up checks or speed checks via plain-old-HTTP).
        
        - An additional command-line option ``--profile_options`` is accepted
          by the supervisord script for developer use::
        
            supervisord -n -c sample.conf --profile_options=cumulative,calls
        
          The values are sort_stats options that can be passed to the
          standard Python profiler's PStats sort_stats method.
        
          When you exit supervisor, it will print Python profiling output to
          stdout.
        
        - If cElementTree is installed in the Python used to invoke
          supervisor, an alternate (faster, by about 2X) XML parser will be
          used to parse XML-RPC request bodies.  cElementTree was added as
          an "extras_require" option in setup.py.
        
        - Added the ability to start, stop, and restart process groups to
          supervisorctl.  To start a group, use ``start groupname:*``.  To start
          multiple groups, use ``start groupname1:* groupname2:*``.  Equivalent
          commands work for "stop" and "restart". You can mix and match short
          processnames, fullly-specified group:process names, and groupsplats on the
          same line for any of these commands.
        
        - Added ``directory`` option to process config.  If you set this
          option, supervisor will chdir to this directory before executing
          the child program (and thus it will be the child's cwd).
        
        - Added ``umask`` option to process config.  If you set this option,
          supervisor will set the umask of the child program.  (Thanks to
          Ian Bicking for the suggestion).
        
        - A pair of scripts ``osx_memmon_eventgen.py`` and `osx_memmon_listener.py``
          have been added to the scripts directory.  If they are used together as
          described in their comments, processes which are consuming "too much"
          memory will be restarted.  The ``eventgen`` script only works on OSX (my
          main development platform) but it should be trivially generalizable to
          other operating systems.
        
        - The long form ``--configuration`` (-c) command line option for
          supervisord was broken.  Reported by Mike Orr.  (Mike Naberezny)
        
        - New log level: BLAT (blather).  We log all
          supervisor-internal-related debugging info here.  Thanks to Mike
          Orr for the suggestion.
        
        - We now allow supervisor to listen on both a UNIX domain socket and an inet
          socket instead of making them mutually exclusive.  As a result, the options
          "http_port", "http_username", "http_password", "sockchmod" and "sockchown"
          are no longer part of the ``[supervisord]`` section configuration. These
          have been supplanted by two other sections: ``[unix_http_server]`` and
          ``[inet_http_server]``.  You'll need to insert one or the other (depending
          on whether you want to listen on a UNIX domain socket or a TCP socket
          respectively) or both into your supervisord.conf file.  These sections have
          their own options (where applicable) for port, username, password, chmod,
          and chown.  See README.txt for more information about these sections.
        
        - All supervisord command-line options related to "http_port",
          "http_username", "http_password", "sockchmod" and "sockchown" have
          been removed (see above point for rationale).
        
        - The option that *used* to be ``sockchown`` within the ``[supervisord]``
          section (and is now named ``chown`` within the ``[unix_http_server]``
          section) used to accept a dot-separated user.group value.  The separator
          now must be a colon ":", e.g. "user:group".  Unices allow for dots in
          usernames, so this change is a bugfix.  Thanks to Ian Bicking for the bug
          report.
        
        - If a '-c' option is not specified on the command line, both supervisord and
          supervisorctl will search for one in the paths ``./supervisord.conf`` ,
          ``./etc/supervisord.conf`` (relative to the current working dir when
          supervisord or supervisorctl is invoked) or in ``/etc/supervisord.conf``
          (the old default path).  These paths are searched in order, and supervisord
          and supervisorctl will use the first one found.  If none are found,
          supervisor will fail to start.
        
        - The Python string expression ``%(here)s`` (referring to the directory in
          which the the configuration file was found) can be used within the
          following sections/options within the config file::
        
              unix_http_server:file
              supervisor:directory
              supervisor:logfile
              supervisor:pidfile
              supervisor:childlogdir
              supervisor:environment
              program:environment
              program:stdout_logfile
              program:stderr_logfile
              program:process_name
              program:command
        
        - The ``--environment`` aka ``-b`` option was removed from the list of
          available command-line switches to supervisord (use "A=1 B=2
          bin/supervisord" instead).
        
        - If the socket filename (the tail-end of the unix:// URL) was
          longer than 64 characters, supervisorctl would fail with an
          encoding error at startup.
        
        - The ``identifier`` command-line argument was not functional.
        
        - Fixed http://www.plope.com/software/collector/215 (bad error
          message in supervisorctl when program command not found on PATH).
        
        - Some child processes may not have been shut down properly at
          supervisor shutdown time.
        
        - Move to ZPL-derived (but not ZPL) license available from
          http://www.repoze.org/LICENSE.txt; it's slightly less restrictive
          than the ZPL (no servicemark clause).
        
        - Spurious errors related to unclosed files ("bad file descriptor",
          typically) were evident at supervisord "reload" time (when using
          the "reload" command from supervisorctl).
        
        - We no longer bundle ez_setup to bootstrap setuptools installation.
        
        3.0a2 (2007-08-24)
        ------------------
        
        - Fixed the README.txt example for defining the supervisor RPC
          interface in the configuration file.  Thanks to Drew Perttula.
        
        - Fixed a bug where process communication events would not have the
          proper payload if the payload data was very short.
        
        - when supervisord attempted to kill a process with SIGKILL after
          the process was not killed within "stopwaitsecs" using a "normal"
          kill signal, supervisord would crash with an improper
          AssertionError.  Thanks to Calvin Hendryx-Parker.
        
        - On Linux, Supervisor would consume too much CPU in an effective
          "busywait" between the time a subprocess exited and the time at
          which supervisor was notified of its exit status.  Thanks to Drew
          Perttula.
        
        - RPC interface behavior change: if the RPC method
          "sendProcessStdin" is called against a process that has closed its
          stdin file descriptor (e.g. it has done the equivalent of
          "sys.stdin.close(); os.close(0)"), we return a NO_FILE fault
          instead of accepting the data.
        
        - Changed the semantics of the process configuration ``autorestart``
          parameter with respect to processes which move between the RUNNING and
          EXITED state.  ``autorestart`` was previously a boolean.  Now it's a
          trinary, accepting one of ``false``, ``unexpected``, or ``true``.  If it's
          ``false``, a process will never be automatically restarted from the EXITED
          state.  If it's ``unexpected``, a process that enters the EXITED state will
          be automatically restarted if it exited with an exit code that was not
          named in the process config's ``exitcodes`` list.  If it's ``true``, a
          process that enters the EXITED state will be automatically restarted
          unconditionally.  The default is now ``unexpected`` (it was previously
          ``true``).  The readdition of this feature is a reversion of the behavior
          change note in the changelog notes for 3.0a1 that asserted we never cared
          about the process' exit status when determining whether to restart it or
          not.
        
        - setup.py develop (and presumably setup.py install) would fail under Python
          2.3.3, because setuptools attempted to import ``splituser`` from urllib2,
          and it didn't exist.
        
        - It's now possible to use ``setup.py install`` and ``setup.py develop`` on
          systems which do not have a C compiler if you set the environment variable
          "NO_MELD3_EXTENSION_MODULES=1" in the shell in which you invoke these
          commands (versions of meld3 > 0.6.1 respect this envvar and do not try to
          compile optional C extensions when it's set).
        
        - The test suite would fail on Python versions <= 2.3.3 because
          the "assertTrue" and "assertFalse" methods of unittest.TestCase
          didn't exist in those versions.
        
        - The ``supervisorctl`` and ``supervisord`` wrapper scripts were disused in
          favor of using setuptools' ``console_scripts`` entry point settings.
        
        - Documentation files and the sample configuration file are put into
          the generated supervisor egg's ``doc`` directory.
        
        - Using the web interface would cause fairly dramatic memory
          leakage.  We now require a version of meld3 that does not appear
          to leak memory from its C extensions (0.6.3).
        
        3.0a1 (2007-08-16)
        ------------------
        
        - Default config file comment documented 10 secs as default for ``startsecs``
          value in process config, in reality it was 1 sec.  Thanks to Christoph
          Zwerschke.
        
        - Make note of subprocess environment behavior in README.txt.
          Thanks to Christoph Zwerschke.
        
        - New "strip_ansi" config file option attempts to strip ANSI escape
          sequences from logs for smaller/more readable logs (submitted by
          Mike Naberezny).
        
        - The XML-RPC method supervisor.getVersion() has been renamed for
          clarity to supervisor.getAPIVersion().  The old name is aliased
          for compatibility but is deprecated and will be removed in a
          future version (Mike Naberezny).
        
        - Improved web interface styling (Mike Naberezny, Derek DeVries)
        
        - The XML-RPC method supervisor.startProcess() now checks that
          the file exists and is executable (Mike Naberezny).
        
        - Two environment variables, "SUPERVISOR_PROCESS_NAME" and
          "SUPERVISOR_PROCESS_GROUP" are set in the environment of child
          processes, representing the name of the process and group in
          supervisor's configuration.
        
        - Process state map change: a process may now move directly from the
          STARTING state to the STOPPING state (as a result of a stop
          request).
        
        - Behavior change: if ``autorestart`` is true, even if a process exits with
          an "expected" exit code, it will still be restarted.  In the immediately
          prior release of supervisor, this was true anyway, and no one complained,
          so we're going to consider that the "officially correct" behavior from now
          on.
        
        - Supervisor now logs subprocess stdout and stderr independently.
          The old program config keys "logfile", "logfile_backups" and
          "logfile_maxbytes" are superseded by "stdout_logfile",
          "stdout_logfile_backups", and "stdout_logfile_maxbytes".  Added
          keys include "stderr_logfile", "stderr_logfile_backups", and
          "stderr_logfile_maxbytes".  An additional "redirect_stderr" key is
          used to cause program stderr output to be sent to its stdout
          channel.  The keys "log_stderr" and "log_stdout" have been
          removed.
        
        - ``[program:x]`` config file sections now represent "homgeneous process
          groups" instead of single processes.  A "numprocs" key in the section
          represents the number of processes that are in the group.  A "process_name"
          key in the section allows composition of the each process' name within the
          homogeneous group.
        
        - A new kind of config file section, ``[group:x]`` now exists, allowing users
          to group heterogeneous processes together into a process group that can be
          controlled as a unit from a client.
        
        - Supervisord now emits "events" at certain points in its normal
          operation.  These events include supervisor state change events,
          process state change events, and "process communication events".
        
        - A new kind of config file section ``[eventlistener:x]`` now exists.  Each
          section represents an "event listener pool", which is a special kind of
          homogeneous process group.  Each process in the pool is meant to receive
          supervisor "events" via its stdin and perform some notification (e.g. send
          a mail, log, make an http request, etc.)
        
        - Supervisord can now capture data between special tokens in
          subprocess stdout/stderr output and emit a "process communications
          event" as a result.
        
        - Supervisor's XML-RPC interface may be extended arbitrarily by programmers.
          Additional top-level namespace XML-RPC interfaces can be added using the
          ``[rpcinterface:foo]`` declaration in the configuration file.
        
        - New ``supervisor``-namespace XML-RPC methods have been added:
          getAPIVersion (returns the XML-RPC API version, the older
          "getVersion" is now deprecated), "startProcessGroup" (starts all
          processes in a supervisor process group), "stopProcessGroup"
          (stops all processes in a supervisor process group), and
          "sendProcessStdin" (sends data to a process' stdin file
          descriptor).
        
        - ``supervisor``-namespace XML-RPC methods which previously accepted
          ony a process name as "name" (startProcess, stopProcess,
          getProcessInfo, readProcessLog, tailProcessLog, and
          clearProcessLog) now accept a "name" which may contain both the
          process name and the process group name in the form
          ``groupname:procname``.  For backwards compatibility purposes,
          "simple" names will also be accepted but will be expanded
          internally (e.g. if "foo" is sent as a name, it will be expanded
          to "foo:foo", representing the foo process within the foo process
          group).
        
        - 2.X versions of supervisorctl will work against supervisor 3.0
          servers in a degraded fashion, but 3.X versions of supervisorctl
          will not work at all against supervisor 2.X servers.
        
        2.2b1 (2007-03-31)
        ------------------
        
        - Individual program configuration sections can now specify an
          environment.
        
        - Added a 'version' command to supervisorctl.  This returns the
          version of the supervisor2 package which the remote supervisord
          process is using.
        
        2.1 (2007-03-17)
        ----------------
        
        - When supervisord was invoked more than once, and its configuration
          was set up to use a UNIX domain socket as the HTTP server, the
          socket file would be erased in error.  The symptom of this was
          that a subsequent invocation of supervisorctl could not find the
          socket file, so the process could not be controlled (it and all of
          its subprocesses would need to be killed by hand).
        
        - Close subprocess file descriptors properly when a subprocess exits
          or otherwise dies.  This should result in fewer "too many open
          files to spawn foo" messages when supervisor is left up for long
          periods of time.
        
        - When a process was not killable with a "normal" signal at shutdown
          time, too many "INFO: waiting for x to die" messages would be sent
          to the log until we ended up killing the process with a SIGKILL.
          Now a maximum of one every three seconds is sent up until SIGKILL
          time.  Thanks to Ian Bicking.
        
        - Add an assertion: we never want to try to marshal None to XML-RPC
          callers.  Issue 223 in the collector from vgatto indicates that
          somehow a supervisor XML-RPC method is returning None (which
          should never happen), but I cannot identify how.  Maybe the
          assertion will give us more clues if it happens again.
        
        - Supervisor would crash when run under Python 2.5 because the
          xmlrpclib.Transport class in Python 2.5 changed in a
          backward-incompatible way.  Thanks to Eric Westra for the bug
          report and a fix.
        
        - Tests now pass under Python 2.5.
        
        - Better supervisorctl reporting on stop requests that have a FAILED
          status.
        
        - Removed duplicated code (readLog/readMainLog), thanks to Mike
          Naberezny.
        
        - Added tailProcessLog command to the XML-RPC API.  It provides a
          more efficient way to tail logs than readProcessLog().  Use
          readProcessLog() to read chunks and tailProcessLog() to tail.
          (thanks to Mike Naberezny).
        
        2.1b1 (2006-08-30)
        ------------------
        
        - "supervisord -h" and "supervisorctl -h" did not work (traceback
          instead of showing help view (thanks to Damjan from Macedonia for
          the bug report).
        
        - Processes which started successfully after failing to start
          initially are no longer reported in BACKOFF state once they are
          started successfully (thanks to Damjan from Macdonia for the bug
          report).
        
        - Add new 'maintail' command to supervisorctl shell, which allows
          you to tail the 'main' supervisor log.  This uses a new
          readMainLog xmlrpc API.
        
        - Various process-state-transition related changes, all internal.
          README.txt updated with new state transition map.
        
        - startProcess and startAllProcesses xmlrpc APIs changed: instead of
          accepting a timeout integer, these accept a wait boolean (timeout
          is implied by process' "startsecs" configuration).  If wait is
          False, do not wait for startsecs.
        
        Known issues:
        
        - Code does not match state transition map.  Processes which are
          configured as autorestarting which start "successfully" but
          subsequently die after 'startsecs' go through the transitions
          RUNNING -> BACKOFF -> STARTING instead of the correct transitions
          RUNNING -> EXITED -> STARTING.  This has no real negative effect,
          but should be fixed for correctness.
        
        2.0 (2006-08-30)
        ----------------
        
        - pidfile written in daemon mode had incorrect pid.
        
        - supervisorctl: tail (non -f) did not pass through proper error
          messages when supplied by the server.
        
        - Log signal name used to kill processes at debug level.
        
        - supervisorctl "tail -f" didn't work with supervisorctl sections
          configured with an absolute unix:// URL
        
        - New "environment" config file option allows you to add environment
          variable values to supervisord environment from config file.
        
        2.0b1 (2006-07-12)
        ------------------
        
        - Fundamental rewrite based on 1.0.7, use distutils (only) for
          installation, use ConfigParser rather than ZConfig, use HTTP for
          wire protocol, web interface, less lies in supervisorctl.
        
        1.0.7 (2006-07-11)
        ------------------
        
        - Don't log a waitpid error if the error value is "no children".
        
        - Use select() against child file descriptor pipes and bump up select
          timeout appropriately.
        
        1.0.6 (2005-11-20)
        ------------------
        
        - Various tweaks to make run more effectively on Mac OS X
          (including fixing tests to run there, no more "error reading
          from fd XXX" in logtail output, reduced disk/CPU usage as a
          result of not writing to log file unnecessarily on Mac OS).
        
        1.0.5 (2004-07-29)
        ------------------
        
        - Short description: In previous releases, managed programs that
          created voluminous stdout/stderr output could run more slowly
          than usual when invoked under supervisor, now they do not.
        
          Long description: The supervisord manages child output by
          polling pipes related to child process stderr/stdout.  Polling
          operations are performed in the mainloop, which also performs a
          'select' on the filedescriptor(s) related to client/server
          operations.  In prior releases, the select timeout was set to 2
          seconds.  This release changes the timeout to 1/10th of a second
          in order to keep up with client stdout/stderr output.
        
          Gory description: On Linux, at least, there is a pipe buffer
          size fixed by the kernel of somewhere between 512 - 4096 bytes;
          when a child process writes enough data to fill the pipe buffer,
          it will block on further stdout/stderr output until supervisord
          comes along and clears out the buffer by reading bytes from the
          pipe within the mainloop.  We now clear these buffers much more
          quickly than we did before due to the increased frequency of
          buffer reads in the mainloop; the timeout value of 1/10th of a
          second seems to be fast enough to clear out the buffers of child
          process pipes when managing programs on even a very fast system
          while still enabling the supervisord process to be in a sleeping
          state for most of the time.
        
        1.0.4 or "Alpha 4" (2004-06-30)
        -------------------------------
        
        - Forgot to update version tag in configure.py, so the supervisor version
          in a3 is listed as "1.0.1", where it should be "1.0.3".  a4 will be
          listed as "1.0.4'.
        
        - Instead of preventing a process from starting if setuid() can't
          be called (if supervisord is run as nonroot, for example), just log
          the error and proceed.
        
        1.0.3 or "Alpha 3" (2004-05-26)
        -------------------------------
        
        - The daemon could chew up a lot of CPU time trying to select()
          on real files (I didn't know select() failed to block when a file
          is at EOF).  Fixed by polling instead of using select().
        
        - Processes could "leak" and become zombies due to a bug in
          reaping dead children.
        
        - supervisord now defaults to daemonizing itself.
        
        - 'daemon' config file option and -d/--daemon command-line option
          removed from supervisord acceptable options.  In place of these
          options, we now have a 'nodaemon' config file option and a
          -n/--nodaemon command-line option.
        
        - logtail now works.
        
        - pidproxy changed slightly to reap children synchronously.
        
        - in alpha2 changelist, supervisord was reported to have a
          "noauth" command-line option.  This was not accurate.  The way
          to turn off auth on the server is to disinclude the "passwdfile"
          config file option from the server config file.  The client
          however does indeed still have a noauth option, which prevents
          it from ever attempting to send authentication credentials to
          servers.
        
        - ZPL license added for ZConfig to LICENSE.txt
        
        1.0.2 or "Alpha 2" (Unreleased)
        -------------------------------
        
        - supervisorctl and supervisord no longer need to run on the same machine
          due to the addition of internet socket support.
        
        - supervisorctl and supervisord no longer share a common configuration
          file format.
        
        - supervisorctl now uses a persistent connection to supervisord
          (as opposed to creating a fresh connection for each command).
        
        - SRP (Secure Remote Password) authentication is now a supported form
          of access control for supervisord.  In supervisorctl interactive mode,
          by default, users will be asked for credentials when attempting to
          talk to a supervisord that requires SRP authentication.
        
        - supervisord has a new command-line option and configuration file
          option for specifying "noauth" mode, which signifies that it
          should not require authentication from clients.
        
        - supervisorctl has a new command-line option and configuration
          option for specifying "noauth" mode, which signifies that it
          should never attempt to send authentication info to servers.
        
        - supervisorctl has new commands: open: opens a connection to a new
          supervisord; close: closes the current connection.
        
        - supervisorctl's "logtail" command now retrieves log data from
          supervisord's log file remotely (as opposed to reading it
          directly from a common filesystem).  It also no longer emulates
          "tail -f", it just returns <n> lines of the server's log file.
        
        - The supervisord/supervisorctl wire protocol now has protocol versioning
          and is documented in "protocol.txt".
        
        - "configfile" command-line override -C changed to -c
        
        - top-level section name for supervisor schema changed to 'supervisord'
          from 'supervisor'
        
        - Added 'pidproxy' shim program.
        
        Known issues in alpha 2:
        
        - If supervisorctl loses a connection to a supervisord or if the
          remote supervisord crashes or shuts down unexpectedly, it is
          possible that any supervisorctl talking to it will "hang"
          indefinitely waiting for data.  Pressing Ctrl-C will allow you
          to restart supervisorctl.
        
        - Only one supervisorctl process may talk to a given supervisord
          process at a time.  If two supervisorctl processes attempt to talk
          to the same supervisord process, one will "win" and the other will
          be disconnected.
        
        - Sometimes if a pidproxy is used to start a program, the pidproxy
          program itself will "leak".
        
        1.0.0 or "Alpha 1" (Unreleased)
        -------------------------------
        
        Initial release.
        
Platform: UNKNOWN
Classifier: Development Status :: 5 - Production/Stable
Classifier: Environment :: No Input/Output (Daemon)
Classifier: Intended Audience :: System Administrators
Classifier: Natural Language :: English
Classifier: Operating System :: POSIX
Classifier: Topic :: System :: Boot
Classifier: Topic :: System :: Monitoring
Classifier: Topic :: System :: Systems Administration
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 2.4
Classifier: Programming Language :: Python :: 2.5
Classifier: Programming Language :: Python :: 2.6
Classifier: Programming Language :: Python :: 2.7
Provides-Extra: iterparse