From f946c7e733c57270283440e1fd701070ebddf9d9 Mon Sep 17 00:00:00 2001
From: Joshua Harlow <harlowja@yahoo-inc.com>
Date: Thu, 26 Jun 2014 17:52:04 -0700
Subject: [PATCH] Only warn about deprecation warnings once

Instead of repeatly emitting data about which
modules are deprecated again and again just warn
about those deprecation once and then never warn
about them again.

This is a good thing to have, and will be needed
as taskflow moves one of its classes used in cinder
to a new and longer-term location and will emit
deprecation about the usage of the old location.

Change-Id: I962f9bab920a03eca235c9e4591d367687e44954
---
 bin/cinder-all                 | 3 +++
 bin/cinder-api                 | 3 +++
 bin/cinder-backup              | 3 +++
 bin/cinder-clear-rabbit-queues | 3 +++
 bin/cinder-manage              | 3 +++
 bin/cinder-rpc-zmq-receiver    | 3 +++
 bin/cinder-scheduler           | 3 +++
 bin/cinder-volume              | 3 +++
 bin/cinder-volume-usage-audit  | 3 +++
 9 files changed, 27 insertions(+)

diff --git a/bin/cinder-all b/bin/cinder-all
index a3b2fcf7f70..1e5842d88cd 100755
--- a/bin/cinder-all
+++ b/bin/cinder-all
@@ -32,6 +32,9 @@ eventlet.monkey_patch()
 
 import os
 import sys
+import warnings
+
+warnings.simplefilter('once', DeprecationWarning)
 
 from oslo.config import cfg
 
diff --git a/bin/cinder-api b/bin/cinder-api
index 8990f641e70..e5b411dee73 100755
--- a/bin/cinder-api
+++ b/bin/cinder-api
@@ -22,6 +22,9 @@ eventlet.monkey_patch()
 
 import os
 import sys
+import warnings
+
+warnings.simplefilter('once', DeprecationWarning)
 
 from oslo.config import cfg
 
diff --git a/bin/cinder-backup b/bin/cinder-backup
index 2b5a634cca2..69f2c76bf05 100755
--- a/bin/cinder-backup
+++ b/bin/cinder-backup
@@ -20,6 +20,9 @@
 
 import os
 import sys
+import warnings
+
+warnings.simplefilter('once', DeprecationWarning)
 
 import eventlet
 
diff --git a/bin/cinder-clear-rabbit-queues b/bin/cinder-clear-rabbit-queues
index 4a59b8b3d5e..bab50ec52ca 100755
--- a/bin/cinder-clear-rabbit-queues
+++ b/bin/cinder-clear-rabbit-queues
@@ -23,6 +23,9 @@
 
 import os
 import sys
+import warnings
+
+warnings.simplefilter('once', DeprecationWarning)
 
 from oslo.config import cfg
 
diff --git a/bin/cinder-manage b/bin/cinder-manage
index c9eec4ad99f..a0c2df0752d 100755
--- a/bin/cinder-manage
+++ b/bin/cinder-manage
@@ -57,6 +57,9 @@ from __future__ import print_function
 
 import os
 import sys
+import warnings
+
+warnings.simplefilter('once', DeprecationWarning)
 
 from oslo.config import cfg
 from oslo import messaging
diff --git a/bin/cinder-rpc-zmq-receiver b/bin/cinder-rpc-zmq-receiver
index 07db167b0bd..cd7d94a8f80 100755
--- a/bin/cinder-rpc-zmq-receiver
+++ b/bin/cinder-rpc-zmq-receiver
@@ -19,6 +19,9 @@ eventlet.monkey_patch()
 import contextlib
 import os
 import sys
+import warnings
+
+warnings.simplefilter('once', DeprecationWarning)
 
 # If ../cinder/__init__.py exists, add ../ to Python search path, so that
 # it will override what happens to be installed in /usr/(local/)lib/python...
diff --git a/bin/cinder-scheduler b/bin/cinder-scheduler
index e8ee1175baf..a01fe3e4e9b 100755
--- a/bin/cinder-scheduler
+++ b/bin/cinder-scheduler
@@ -24,6 +24,9 @@ eventlet.monkey_patch()
 
 import os
 import sys
+import warnings
+
+warnings.simplefilter('once', DeprecationWarning)
 
 from oslo.config import cfg
 
diff --git a/bin/cinder-volume b/bin/cinder-volume
index 5b8b8a8d9c2..45c4ed4613e 100755
--- a/bin/cinder-volume
+++ b/bin/cinder-volume
@@ -28,6 +28,9 @@ else:
     eventlet.monkey_patch()
 
 import sys
+import warnings
+
+warnings.simplefilter('once', DeprecationWarning)
 
 from oslo.config import cfg
 
diff --git a/bin/cinder-volume-usage-audit b/bin/cinder-volume-usage-audit
index accca839d8d..3f223d38a7b 100755
--- a/bin/cinder-volume-usage-audit
+++ b/bin/cinder-volume-usage-audit
@@ -38,6 +38,9 @@ from datetime import datetime
 import os
 import sys
 import traceback
+import warnings
+
+warnings.simplefilter('once', DeprecationWarning)
 
 from oslo.config import cfg