Collectd+InfluxDb-RMON Replacement(ALL METRICS) P1

This update introduces a non-reboot patch example script for a service
whose patch modified its service file thereby requiring a system
daemon-reload as a precursor to the service process restart.
This new RPM was introduced in support of no-reboot patching of the
'influxdb' and 'collectd' processes ; so those are the default processes
used in this script.
Note that there is nothing that prevents a designer from using this as a
more general example script for any service that requires the same
patching operations after replacing the default process names with their
own.

Change-Id: I9f261509f16490f986722b47b0f92db4ef735609
Signed-off-by: Jack Ding <jack.ding@windriver.com>

centos_pkg_dirs

@@ -13,3 +13,4 @@ patch-scripts/EXAMPLE_HEAT
 patch-scripts/EXAMPLE_VIM
 patch-scripts/EXAMPLE_NOVA
 patch-scripts/EXAMPLE_SYSINV
+patch-scripts/EXAMPLE_SERVICE

patch-scripts/EXAMPLE_SERVICE/centos/EXAMPLE_SERVICE.spec

@@ -0,0 +1,27 @@
+Name: EXAMPLE_SERVICE
+Summary: TIS In-Service Patch Scripts Example that supports systemd reload
+Version: 1.0
+Release: %{tis_patch_ver}%{?_tis_dist}
+License: windriver
+Group: base
+Packager: Wind River <info@windriver.com>
+Source0: service-process-restart
+
+%install
+    install -Dp -m 700 %{S:0} %{buildroot}%{_patch_scripts}/%{name}
+
+%description
+%{summary}
+
+%files
+%defattr(-,root,root,-)
+%{_patch_scripts}/*
+
+%post
+cp -f %{_patch_scripts}/%{name} %{_runtime_patch_scripts}/
+exit 0
+
+%preun
+cp -f %{_patch_scripts}/%{name} %{_runtime_patch_scripts}/
+exit 0
+

patch-scripts/EXAMPLE_SERVICE/centos/build_srpm.data

@@ -0,0 +1,2 @@
+COPY_LIST="scripts/*"
+TIS_PATCH_VER=0

patch-scripts/EXAMPLE_SERVICE/scripts/service-process-restart

@@ -0,0 +1,54 @@
+#!/bin/bash
+#
+# Copyright (c) 2018 Wind River Systems, Inc.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+#
+# This script provides an example in-service patching restart script
+# that supports service file changes by issuing a systemctl daemon reload
+# after the patch is applied
+
+#
+# The patching subsystem provides a patch-functions bash source file
+# with useful function and variable definitions.
+#
+. /etc/patching/patch-functions
+
+#
+# Declare an overall script return code
+#
+declare -i GLOBAL_RC=$PATCH_STATUS_OK
+
+# issue a systemd daemon-reload once the rpms have been installed and before
+# the processes have been restarted.
+systemctl daemon-reload
+
+# processes that run on all nodes
+processes_to_restart="collectd"
+/usr/local/sbin/patch-restart-processes ${processes_to_restart}
+if [ $? != 0 ] ; then
+    loginfo "patching restart failed"
+    loginfo "... process-restart ${processes_to_restart}"
+    exit ${PATCH_STATUS_FAILED}
+fi
+
+# processes that only run on controller hosts
+if is_controller
+then
+    processes_to_restart="influxdb"
+    /usr/local/sbin/patch-restart-processes ${processes_to_restart}
+    if [ $? != 0 ] ; then
+        loginfo "patching restart failed"
+        loginfo "... process-restart ${processes_to_restart}"
+        exit ${PATCH_STATUS_FAILED}
+    fi
+fi
+
+
+#
+# Exit the script with the overall return code
+#
+exit $GLOBAL_RC
+