netdata: add new package

Netdata (https://github.com/firehol/netdata) is a real-time performance monitoring tool.
This submission uses the current Git prerelease, as the latest stable (1.1.0)doesn't build cleanly.

The default configuration makes a few changes for OpenWrt:
 - access log is disabled by default; too verbose for the circular
     syslog buffer, and logging to /tmp is risky memory-wise.
     Some sort of external device would be ideal for this.

 - error and debug logs are sent to OpenWrt's syslog

 - history and frequency times are halved to reduce memory usage,
     as recommended in the netdata wiki

 - external plugins are disabled to eliminate the dependency on bash
     and node.js. Those could be installed from OpenWrt packages if
     you wish to enable that functionality.

     All of those files are still present in the package. The installed
     size could be reduced by eliminating those files first.

Signed-off-by: Claudio Leite <leitec@staticky.com>
Signed-off-by: Sebastian Careba <nitroshift@yahoo.com>
[squash commits, change PKG_VERSION]
Signed-off-by: Etienne CHAMPETIER <champetier.etienne@gmail.com>

admin/netdata/Makefile

@@ -0,0 +1,61 @@
+#
+# Copyright (C) 2008-2016 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=netdata
+PKG_VERSION:=20160508-devel
+PKG_RELEASE:=1
+PKG_MAINTAINER:=Sebastian Careba <nitroshift@yahoo.com>
+PKG_LICENSE:=GPL-3.0
+PKG_LICENSE_FILES:=COPYING
+
+PKG_SOURCE_PROTO:=git
+PKG_SOURCE_URL=https://github.com/firehol/netdata
+PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
+PKG_SOURCE_VERSION:=0ec2db444011f5b6ebf41dab45502c27cd544af2
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+
+PKG_INSTALL:=1
+PKG_FIXUP:=autoreconf
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/netdata
+  SECTION:=admin
+  CATEGORY:=Administration
+  DEPENDS:=+zlib
+  TITLE:=Real-time performance monitoring tool
+  URL:=http://netdata.firehol.org/
+endef
+
+define Package/netdata/description
+  netdata is a highly optimized Linux daemon providing real-time performance
+  monitoring for Linux systems, applications and SNMP devices over the web.
+endef
+
+define Package/netdata/conffiles
+/etc/netdata/
+endef
+
+define Package/netdata/install
+	$(INSTALL_DIR) $(1)/etc/netdata
+	$(INSTALL_CONF) $(PKG_INSTALL_DIR)/etc/netdata/apps_groups.conf $(1)/etc/netdata
+	$(INSTALL_CONF) $(PKG_INSTALL_DIR)/etc/netdata/charts.d.conf $(1)/etc/netdata
+	$(INSTALL_CONF) ./files/netdata.conf $(1)/etc/netdata
+	$(INSTALL_DIR) $(1)/etc/init.d
+	$(INSTALL_BIN) ./files/netdata.init $(1)/etc/init.d/netdata
+	$(INSTALL_DIR) $(1)/usr/sbin
+	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/sbin/netdata $(1)/usr/sbin/
+	$(INSTALL_DIR) $(1)/usr/share/netdata
+	$(INSTALL_DIR) $(1)/usr/lib/netdata
+	$(CP) $(PKG_INSTALL_DIR)/usr/share/netdata $(1)/usr/share
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/netdata $(1)/usr/lib
+	chmod 4755 $(1)/usr/lib/netdata/plugins.d/apps.plugin
+endef
+
+$(eval $(call BuildPackage,netdata))

admin/netdata/files/netdata.conf

@@ -0,0 +1,16 @@
+[global]
+	run as user = nobody
+	web files owner = root
+	web files group = root
+	update every = 2
+	history = 1800
+	access log = none
+	debug log = syslog
+	error log = syslog
+	memory mode = ram
+
+[plugins]
+	charts.d = no
+	apps = no
+	node.d = no
+	tc = no

admin/netdata/files/netdata.init

@@ -0,0 +1,11 @@
+#!/bin/sh /etc/rc.common
+
+START=99
+
+start() {
+	service_start /usr/sbin/netdata
+}
+
+stop() {
+	service_stop /usr/sbin/netdata
+}