Added auto configure for proxy url

Makefile

-all: 
+all: failover-proxy-config
 	rm /etc/nginx/nginx.conf
-	install -v -Dm644 failoverProxy.conf /etc/nginx/failoverProxy.conf
+#	install -v -Dm644 failoverProxy.conf /etc/nginx/failoverProxy.conf
 	install -v -Dm644 nginx.conf /etc/nginx/nginx.conf
+
+	@echo "$$FAILOVER_CONFIG" > /etc/config/proxy
+
+	install -v -Dm755 failover-proxy /usr/share/easycwmp/functions/failover-proxy
+	install -v -Dm755 failover-proxy-init /usr/sbin/failover-proxy-init
+	sed -i '/^\[Service\]$$/a ExecStartPre=/usr/sbin/failover-proxy-init' /lib/systemd/system/nginx.service
+
+failover-proxy-config:
+define FAILOVER_CONFIG
+
+config proxy 'failover'
+	option address ''
+endef
+export FAILOVER_CONFIG

failover-proxy

+#!/bin/sh
+
+#common_execute_method_param "$parameter" "$permission" "$get_cmd" "$set_cmd" "xsd:$type" "$forcedinform"
+#  $forcedinform should be set to 1 if the parameter is included in the inform message otherwise empty
+#  Default of $type = string
+
+#############################
+#   Entry point functuons   #
+#############################
+
+prefix_list="$prefix_list $DMROOT.Proxy."
+entry_execute_method_list="$entry_execute_method_list entry_execute_method_root_Proxy"
+entry_execute_method_list_forcedinform="$entry_execute_method_list_forcedinform  entry_execute_method_root_Proxy"
+
+entry_execute_method_root_Proxy() {
+	case "$1" in ""|"$DMROOT."|"$DMROOT.Proxy."*)
+		common_execute_method_obj "$DMROOT.Proxy." "0"
+		common_execute_method_param "$DMROOT.Proxy.Address" "1" "get_address" "set_address"
+		return 0;
+		;;
+	esac
+	return $E_INVALID_PARAMETER_NAME;
+}
+
+#######################################
+#   Data model parameters functions   #
+#######################################
+
+get_address() {
+	echo `$UCI_GET proxy.failover.address`
+}
+
+set_address() {
+	local address=`$UCI_GET proxy.failover.address`
+	if [ "$address" != "$1" ]; then
+		$UCI_SET proxy.failover.address="$1"
+		$UCI_COMMIT
+		failover-proxy-init
+		systemctl restart nginx
+	fi
+}

failover-proxy-init

+#!/bin/sh
+UCI_GET="/sbin/uci -q get"
+
+ADDRESS=`$UCI_GET proxy.failover.address`
+generate_config() {
+#ADDRESS="10.1.1.1;10.1.1.2;10.1.1.3"
+	IFS=";" read -a ADDRESSES <<< "$ADDRESS"
+	length=${#ADDRESSES[*]}
+	config="location / {proxy_intercept_errors on;proxy_pass ${ADDRESSES[0]};error_page 403 404 = @fallback1;}"
+	for ((i=1; i<$length-1; i++)); do
+	    config="$config location @fallback$i {proxy_intercept_errors on;proxy_pass "
+	    config="$config${ADDRESSES[$i]}"
+	    config="$config;error_page 403 404 = @fallback$((i+1));}"
+	done
+	
+	config="$config location @fallback$i {proxy_pass ${ADDRESSES[-1]};}"
+}
+
+generate_config
+
+if [ ! -z $ADDRESS ]; then
+    cat << EOF > /run/failoverProxy.conf
+$config
+EOF
+fi

failoverProxy.conf

-    location / {
-        proxy_intercept_errors on;
-        proxy_pass http://rgw.ceph.iszf.irk.ru;
-        error_page 403 404 = @fallback;
-    }
-
-    location @fallback {
-        proxy_pass http://rgw.ceph.badary.iszf.irk.ru;
-    }
-

nginx.conf

@@ -16,7 +16,7 @@ http {
 
         recursive_error_pages on;
 
-        include failoverProxy.conf;
+        include /run/failoverProxy.conf;
 
     }
 }