glusterfs.git/events/src/gf_event.py, branch v5.3

events: python2 to python3 compat

2018-10-10T14:08:52+00:00

1. Fix imports
2. Use universal_newlines flag in Popen
3. encode msg used in 'sendto'

Updates: #411
Change-Id: Ieacdc2ba86953ff3a2e9d9b9a97157e8e0e36836
Signed-off-by: Kotresh HR 
(cherry picked from commit b5f75e337c19d4fed85d4dcf15cf47f02fea5f6a)

core: python3

2018-09-03T09:14:44+00:00

see https://review.gluster.org/#/c/19788/,
    https://review.gluster.org/#/c/19871/,
    https://review.gluster.org/#/c/19952/,
    https://review.gluster.org/#/c/20104/,
    https://review.gluster.org/#/c/20162/,
    https://review.gluster.org/#/c/20185/,
    https://review.gluster.org/#/c/20207/,
    https://review.gluster.org/#/c/20227/,
    https://review.gluster.org/#/c/20307/,
    https://review.gluster.org/#/c/20320/,
    https://review.gluster.org/#/c/20332/,
    https://review.gluster.org/#/c/20364/,
    https://review.gluster.org/#/c/20441/, and
    https://review.gluster.org/#/c/20484

shebangs changed from /usr/bin/python2 to /usr/bin/python3.
(Reminder, various distribution packaging guidelines require use
of explicit python version and don't allow '#!/usr/bin/env python',
regardless of how handy that idiom may be.)

glusterfs.spec(.in) package python{2,3}-gluster and python2 or
python3 dependencies as appropriate.

configure(.ac):
+ test for and use python2 or python3 as appropriate. If build
  machine has python2 and python3, use python3. Override by
  setting PYTHON=/usr/bin/python2 when running configure.
+ PYTHONDEV_CPPFLAGS from python[23]-config --includes is a
  better match to the original python sysconfig.get_python_inc().
  All those other extraneous flags breaks the build.
+ Only change the shebangs once. Changing them over and over
  again, e.g., during a `make glusterrpms` in extras/LinuxRPM
  just sends make (is it really make that's looping?) into an
  infinite loop. If you figure out why, let me know.
+ Oldest python2 is python2.6 on CentOS 6 and Debian 8 (Jessie).
  Everything else has 2.7 or 3.x
+ logic from https://review.gluster.org/c/glusterfs/+/21050, which
  needs to be removed/merged after that patch is merged.

Builds on CentOS 6, CentOS 7, Fedora 28, Fedora rawhide, and the
mysterious RHEL > 7.

Change-Id: Idae21d3b6f58b32372e1daa0d234e491e563198f
updates: #411
Signed-off-by: Kaleb S. KEITHLEY

core/build/various: python3 compat, prepare for python2 -> python3

2018-04-12T11:04:27+00:00

Note 1) we're not supposed to be using #!/usr/bin/env python, see
https://fedoraproject.org/wiki/Packaging:Guidelines?rd=Packaging/Guidelines#Shebang_lines

Note 2) we're also not supposed to be using "!/usr/bin/python,
see https://fedoraproject.org/wiki/Changes/Avoid_usr_bin_python_in_RPM_Build#Quick_Opt-Out

The previous patch (https://review.gluster.org/19767) tried to do too
much in one patch, so it was abandoned.

This patch does two things:
1) minor cleanup of configure(.ac) to explicitly use python2
2) change all the shebang lines to #!/usr/bin/python2 and add them
where they were missing based on warnings emitted during rpmbuild.

In a follow-up patch python2 will eventually be changed to python3.

Before that python2-isms (e.g. print, string.join(), etc.) need to be
converted to python3. Some of those can be rewritten in version agnostic
python. E.g. print statements become print() with "from __future_ import
print_function". The python 2to3 utility will be used for some of those.
Also Aravinda has given guidance in the comments to the first patch for
changes.

updates: #411
Change-Id: I471730962b2526022115a1fc33629fb078b74338
Signed-off-by: Kaleb S. KEITHLEY

eventsapi: Add support for Client side Events

2016-08-31T01:34:59+00:00

Client side gf_event uses ctx->cmd_args.volfile_server to push
notifications to the eventsd.

Socket server changed from Unix domain socket to UDP to support
external events.

Following to be addressed in different patch
- Port used for eventsd is 24009. Make it configurable
  Already configurable in Server side. Configurable in gf_event API
  is required.
- Auth Token yet to be added as discussed in
  https://www.gluster.org/pipermail/gluster-devel/2016-August/050324.html

Change-Id: I159acf80b681d10b82d52cfb3ffdf85cb896542d
BUG: 1367774
Signed-off-by: Aravinda VK 
Reviewed-on: http://review.gluster.org/15189
Smoke: Gluster Build System 
Reviewed-by: Prashanth Pai 
Reviewed-by: Atin Mukherjee 
CentOS-regression: Gluster Build System 
NetBSD-regression: NetBSD Build System

eventsapi: Fix disable-events issue

2016-08-24T08:23:06+00:00

Events related sources are not loaded in libglusterfs when
configure is run with --disable-events option. Due to this
every call of gf_event should be guarded with USE_EVENTS macro.

To prevent this, USE_EVENTS macro was included in events.c
itself(Patch #15054)

Instead of disabling building entire directory "events", selectively
disabled the code. So that constants and empty function gf_event is
exposed. Code will not fail even if gf_event is called when events is
disabled.

BUG: 1368042
Change-Id: Ia6abfe9c1e46a7640c4d8ff5ccf0e9c30c87f928
Signed-off-by: Aravinda VK 
Reviewed-on: http://review.gluster.org/15198
Smoke: Gluster Build System 
Reviewed-by: Niels de Vos 
CentOS-regression: Gluster Build System 
NetBSD-regression: NetBSD Build System

eventsapi: Python library for gf_event

2016-08-09T07:24:32+00:00

Python library to emit Events from Geo-replication or any other Python apps
running in storage nodes.

Add $LIBEXEC/glusterfs/events to Python path to use gf_event

gf_event(event_type, **kwargs)

For example,

    sys.path.insert(1, "LIBEXECDIR/glusterfs")
    from events.gf_event import gf_event
    from events import eventtypes

    gf_event(eventtypes.GEOREP_FAULTY,
             volname="gv1",
             slaveuser="root",
             slavehost="node1",
             slavevol="gv2")

Errors will be logged in $LOGDIR/glusterfs/events.log

BUG: 1362144
Change-Id: I2af2bd77f9961975e4387006b9e99e4543e12b57
Signed-off-by: Aravinda VK 
Reviewed-on: http://review.gluster.org/15063
Smoke: Gluster Build System 
NetBSD-regression: NetBSD Build System 
CentOS-regression: Gluster Build System 
Reviewed-by: Samikshan Bairagya 
Reviewed-by: Prashanth Pai