Deprecate event subsystem

This subsystem has never been finished and is not maintained.
Deprecate it for future removal.

Change-Id: I934696b8fc066adc2d9085c64dffb3759fa4489c

ceilometer/event/converter.py

@@ -27,14 +27,17 @@ from ceilometer.i18n import _
 OPTS = [
     cfg.StrOpt('definitions_cfg_file',
                default="event_definitions.yaml",
+               deprecated_for_removal=True,
                help="Configuration file for event definitions."
                ),
     cfg.BoolOpt('drop_unmatched_notifications',
                 default=False,
+                deprecated_for_removal=True,
                 help='Drop notifications if no event definition matches. '
                 '(Otherwise, we convert them with just the default traits)'),
     cfg.MultiStrOpt('store_raw',
                     default=[],
+                    deprecated_for_removal=True,
                     help='Store the raw notification for select priority '
                     'levels (info and/or error). By default, raw details are '
                     'not captured.')

ceilometer/pipeline/base.py

@@ -31,6 +31,7 @@ OPTS = [
                ),
     cfg.StrOpt('event_pipeline_cfg_file',
                default="event_pipeline.yaml",
+               deprecated_for_removal=True,
                help="Configuration file for event pipeline definition."
                ),
 ]

doc/source/admin/telemetry-events.rst

@@ -6,6 +6,9 @@ In addition to meters, the Telemetry service collects events triggered
 within an OpenStack environment. This section provides a brief summary
 of the events format in the Telemetry service.
 
+.. warning::
+   Events support is deprecated.
+
 While a sample represents a single, numeric datapoint within a
 time-series, an event is a broader concept that represents the state of
 a resource at a point in time. The state may be described using various

doc/source/contributor/events.rst

@@ -23,12 +23,18 @@ Events vs. Samples
 ~~~~~~~~~~~~~~~~~~
 
 In addition to Meters, and related Sample data, Ceilometer can also process
-Events.  While a Sample represents a single numeric datapoint, driving a Meter
+Events.
-that represents the changes in that value over time, an Event represents the
+
-state of an object in an OpenStack service (such as an Instance in Nova, or
+
-an Image in Glance) at a point in time when something of interest has occurred.
+.. warning::
-This can include non-numeric data, such as an instance's flavor, or network
+   Events support is deprecated.
-address.
+
+
+While a Sample represents a single numeric datapoint, driving a Meter that
+represents the changes in that value over time, an Event represents the state
+of an object in an OpenStack service (such as an Instance in Nova, or an Image
+in Glance) at a point in time when something of interest has occurred. This can
+include non-numeric data, such as an instance's flavor, or network address.
 
 In general, Events let you know when something has changed about an
 object in an OpenStack system, such as the resize of an instance, or creation

releasenotes/notes/deprecate-events-6561f4059fa25c02.yaml

@@ -0,0 +1,5 @@
+---
+deprecations:
+  - |
+    The Ceilometer event subsystem and pipeline is now deprecated and will be
+    removed in a future release.