Creation of the basis for the supervision monitoring script

monitoring/check_valisechaprilorg_update

@@ -0,0 +1,67 @@
+#! /bin/bash
+#
+# Copyright (C) 2019 Laurent Poujoulat <lpoujoulat@april.org>
+#
+# This file is part of valise.chapril.org
+#
+# This script is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+# ================================================
+# This checks for updates of nextcloud components.
+# If any update is present, they are listed in human readable form on stdout, and 1 is returned,
+# and if everything is OK, tell it on stdout "OK", and returns 0.
+# ================================================
+
+# Configuration data
+CURL_CREDENTIAL="/etc/valise.chapril.org/curl_credential"
+
+# Extract a json value by path (given as argument)
+# The global JSON state is expected to be in NEXTCLOUD_STATE
+# Only give the path part within the ocs.data  section
+getNcState()
+{
+    echo ${NEXTCLOUD_STATE} | jq ".ocs.data.$1"
+}
+
+# Returns script usage
+function usage() 
+{
+	echo "Usage: $(basename $0)"
+}
+
+
+# Main entry point
+EXIT_RESULT=1
+
+# Read and store the current service state
+NEXTCLOUD_STATE=`curl --silent --netrc-file ${CURL_CREDENTIAL} http://localhost/ocs/v2.php/apps/serverinfo/api/v1/info?format=json`
+
+if [ "$#" -ne 0 ]
+then
+	usage
+else
+
+	# Read and store the current service state
+	NEXTCLOUD_STATE=`curl --silent --netrc-file ${CURL_CREDENTIAL} http://localhost/ocs/v2.php/apps/serverinfo/api/v1/info?format=json`
+
+	getNcState "nextcloud.system.apps.num_updates_available"
+	
+fi
+
+exit ${EXIT_RESULT}
+
+
+
+