Only restart services when the corresponding file has been modified recently

README.md

@@ -86,8 +86,14 @@ The options are as follows:
 
 > An optional file that contains a list of services to enable on the remote
 > host.
-> If a service is already enabled, it will be restarted each run of
-> **boxctl**.
+> Each line in the file should contain "name:path".
+> Where "name" is the name of a service (httpd for example) and "path" is the
+> full path to a file that when modified, should trigger a restart of the named
+> service.
+> For example, the entry "httpd:/etc/httpd.conf" would restart
+> httpd(8)
+> if the mtime on "/etc/httpd.conf" is less than 100 seconds from the current
+> time.
 
 *$CWD/groups*
 

boxctl.sh

@@ -69,10 +69,19 @@ EOF
 )
 
 SERVICE_START_RESTART=$(cat <<EOF
-/usr/sbin/rcctl enable %s; \
-/usr/sbin/rcctl check %s && \
-	/usr/sbin/rcctl restart %s || \
+/usr/sbin/rcctl enable %s;
+if /usr/sbin/rcctl check %s; then
+	AGE=\$(stat -s %s | awk -v now=\$(date +%%s) \
+		'{split(\$10,a,"="); print now - a[2]}')
+	if [ \$AGE -lt 100 ]; then
+		logger -t boxctl "restarting %s (\$AGE seconds old)"
+		/usr/sbin/rcctl restart %s
+	else
+		logger -t boxctl "not restarting %s (\$AGE seconds old)"
+	fi
+else
 	/usr/sbin/rcctl start %s
+fi
 EOF
 )
 
@@ -258,10 +267,14 @@ fi
 
 if [ -f ./services ]; then
 	msg 0 "enabling services $(wc -l services | awk '{print $1 " " $2}')"
+	local _svc _chfile
 	for service in $(cat services); do
-		msg 1 "\tenabling/restarting ${service}"
+		read _svc _chfile <<EOF
+			$(echo $service | sed 's/:/ /g')
+EOF
+		msg 1 "\tenabling/restarting ${_svc}"
 		cmd="$(printf "$SERVICE_START_RESTART" \
-			$service $service $service $service)"
+			$_svc $_svc $_chfile $_svc $_svc $_svc $_svc)"
 		_ssh ${RUN_USER}@${SERVER} "${cmd}"
 	done
 fi

examples/host1/services

@@ -1 +1 @@
-httpd
+httpd:/etc/httpd.conf

man/boxctl.8

@@ -83,8 +83,14 @@ If this file does not exist, no files are copied.
 .It Pa $CWD/services
 An optional file that contains a list of services to enable on the remote
 host.
-If a service is already enabled, it will be restarted each run of
-.Nm .
+Each line in the file should contain "name:path".
+Where "name" is the name of a service (httpd for example) and "path" is the
+full path to a file that when modified, should trigger a restart of the named
+service.
+For example, the entry "httpd:/etc/httpd.conf" would restart
+.Xr httpd 8
+if the mtime on "/etc/httpd.conf" is less than 100 seconds from the current
+time.
 .It Pa $CWD/groups
 A ":" delimited list of groups to be added to the remote host.
 Entries should follow a "group:gid" pattern.