Add GMR to cinder wsgi

When running cinder under WSGI, we might want to have Guru Meditation
Reports as well as when running outside of WSGI.

Note that, under WSGI, the GMR can only be trigger via a "touch" on a
file, the "signal" way is not working because apache is registering the
signal handlers instead of cinder, so it's disabled.

Change-Id: I28839e2a97c96b8d71d28dbeb9baa049423fa1c4
Signed-off-by: Arnaud Morin <arnaud.morin@ovhcloud.com>

cinder/wsgi/wsgi.py

@@ -18,6 +18,8 @@ warnings.simplefilter('once', DeprecationWarning)
 
 from oslo_config import cfg
 from oslo_log import log as logging
+from oslo_reports import guru_meditation_report as gmr
+from oslo_reports import opts as gmr_opts
 from oslo_service import wsgi
 
 from cinder import objects  # noqa
@@ -36,11 +38,17 @@ CONF = cfg.CONF
 
 def initialize_application():
     objects.register_all()
+    gmr_opts.set_defaults(CONF)
     CONF(sys.argv[1:], project='cinder',
          version=version.version_string())
     logging.setup(CONF, "cinder")
     config.set_middleware_defaults()
 
+    # NOTE(amorin): Do not register signal handers because it does not work
+    # in wsgi applications
+    gmr.TextGuruMeditation.setup_autorun(
+        version, conf=CONF, setup_signal=False)
+
     coordination.COORDINATOR.start()
 
     rpc.init(CONF)

releasenotes/notes/gmr-ca97ba4602ce0831.yaml

@@ -0,0 +1,6 @@
+---
+other:
+  - |
+    Enabled Guru Meditation Reports on Cinder wsgi.
+    When running Cinder under WSGI, we might want to have Guru Meditation
+    Reports as well as when running outside of WSGI.

requirements.txt

@@ -22,7 +22,7 @@ oslo.messaging>=14.1.0 # Apache-2.0
 oslo.middleware>=4.1.1 # Apache-2.0
 oslo.policy>=3.8.1 # Apache-2.0
 oslo.privsep>=2.6.2 # Apache-2.0
-oslo.reports>=2.2.0 # Apache-2.0
+oslo.reports>=3.2.0 # Apache-2.0
 oslo.rootwrap>=6.2.0 # Apache-2.0
 oslo.serialization>=4.2.0 # Apache-2.0
 oslo.service>=2.8.0 # Apache-2.0