"gluon-node-info": add section system and option role; add announce script to announce the role as nodeinfo;

add invariant script "001-node-system" to add section "system" if not exist; add invariant script "010-node-role"
to add section "system" if not exist; add invariant script "010-node-role" to set role to default value
(site.roles.default) if not exist; depends on new site.conf section

package/gluon-node-info/Makefile

@@ -6,7 +6,7 @@ PKG_RELEASE:=1
 
 PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
 
-include $(INCLUDE_DIR)/package.mk
+include $(GLUONDIR)/include/package.mk
 
 define Package/gluon-node-info
   SECTION:=gluon
@@ -33,4 +33,9 @@ define Package/gluon-node-info/install
 	$(CP) ./files/* $(1)/
 endef
 
+define Package/gluon-node-info/postinst
+#!/bin/sh
+$(call GluonCheckSite,check_site.lua)
+endef
+
 $(eval $(call BuildPackage,gluon-node-info))

package/gluon-node-info/check_site.lua

@@ -0,0 +1,8 @@
+local function check_role(k, _)
+   local role = string.format('roles.list[%q]', k)
+
+   need_string(role)
+end
+
+need_string('roles.default', false)
+need_table('roles.list', check_role, false)

package/gluon-node-info/files/etc/config/gluon-node-info

@@ -2,3 +2,5 @@ config location
 	option share_location '0'
 
 config owner
+
+config system

package/gluon-node-info/files/lib/gluon/announce/nodeinfo.d/system/role

@@ -0,0 +1,4 @@
+local role = uci:get_first('gluon-node-info', 'system', 'role', '')
+if role ~= '' then
+        return role
+end

package/gluon-node-info/files/lib/gluon/upgrade/node-info/invariant/001-node-system

@@ -0,0 +1,11 @@
+#!/usr/bin/lua
+
+local uci = require('luci.model.uci').cursor()
+
+local config = 'gluon-node-info'
+
+if not uci:get_first(config, 'system') then
+  uci:section(config, 'system')
+  uci:save(config)
+  uci:commit(config)
+end

package/gluon-node-info/files/lib/gluon/upgrade/node-info/invariant/010-node-role

@@ -0,0 +1,19 @@
+#!/usr/bin/lua
+
+local site = require 'gluon.site_config'
+local uci = require('luci.model.uci').cursor()
+
+local config = 'gluon-node-info'
+local role = uci:get(config, uci:get_first(config, 'system'), 'role')
+
+if site.roles then
+  default_role = site.roles.default
+else
+  default_role = ''
+end
+
+if not role then
+  uci:set(config, uci:get_first(config, 'system'), 'role', default_role)
+  uci:save(config)
+  uci:commit(config)
+end