luci-app-statistics: convert graph rendering to client side js

This conversion requires cgi-io >= version 17 and uhttpd version >= 2020-02-12
to function properly.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

1 files changed, 0 insertions, 132 deletions

diff --git a/applications/luci-app-statistics/luasrc/controller/luci_statistics/luci_statistics.lua b/applications/luci-app-statistics/luasrc/controller/luci_statistics/luci_statistics.lua
deleted file mode 100644
index 9bf8bcfb06..0000000000
--- a/applications/luci-app-statistics/luasrc/controller/luci_statistics/luci_statistics.lua
+++ /dev/null
@@ -1,132 +0,0 @@
--- Copyright 2008 Freifunk Leipzig / Jo-Philipp Wich <jow@openwrt.org>
--- Copyright 2012 Jo-Philipp Wich <jow@openwrt.org>
--- Licensed to the public under the Apache License 2.0.
-
-module("luci.controller.luci_statistics.luci_statistics", package.seeall)
-
-function index()
-
-	require("nixio.fs")
-	require("luci.util")
-	require("luci.statistics.datatree")
-
-	-- create toplevel menu nodes
-	local st = entry({"admin", "statistics"}, template("admin_statistics/index"), _("Statistics"), 80)
-	st.index = true
-
-	entry({"admin", "statistics", "collectd"}, view("statistics/collectd"), _("Setup"), 20).subindex = true
-
-	-- output views
-	local page = entry( { "admin", "statistics", "graph" }, template("admin_statistics/index"), _("Graphs"), 10)
-	      page.setuser  = "nobody"
-	      page.setgroup = "nogroup"
-
-	local vars = luci.http.formvalue(nil, true)
-	local span = vars.timespan or nil
-	local host = vars.host or nil
-
-	-- get rrd data tree
-	local tree = luci.statistics.datatree.Instance(host)
-
-	local _, plugin, idx
-	for _, plugin, idx in luci.util.vspairs( tree:plugins() ) do
-
-		-- get plugin instances
-		local instances = tree:plugin_instances( plugin )
-
-		-- load plugin menu entry from the description
-		local plugin_name = "luci.statistics.rrdtool.definitions." .. plugin
-		local stat, def = pcall( require, plugin_name )
-		if stat and def and type(def.item) == "function" then
-			entry(
-				{ "admin", "statistics", "graph", plugin },
-				call("statistics_render"), def.item(), idx
-			).query = { timespan = span , host = host }
-		end
-
-		-- if more then one instance is found then generate submenu
-		if #instances > 1 then
-			local _, inst, idx2
-			for _, inst, idx2 in luci.util.vspairs(instances) do
-				-- instance menu entry
-				entry(
-					{ "admin", "statistics", "graph", plugin, inst },
-					call("statistics_render"), inst, idx2
-				).query = { timespan = span , host = host }
-			end
-		end
-	end
-end
-
-function statistics_render()
-
-	require("luci.statistics.rrdtool")
-	require("luci.template")
-	require("luci.model.uci")
-
-	local vars  = luci.http.formvalue()
-	local req   = luci.dispatcher.context.request
-	local path  = luci.dispatcher.context.path
-	local uci   = luci.model.uci.cursor()
-	local spans = luci.util.split( uci:get( "luci_statistics", "collectd_rrdtool", "RRATimespans" ), "%s+", nil, true )
-	local span  = vars.timespan or uci:get( "luci_statistics", "rrdtool", "default_timespan" ) or spans[1]
-	local host  = vars.host     or uci:get( "luci_statistics", "collectd", "Hostname" ) or luci.sys.hostname()
-	local opts = { host = vars.host }
-	local graph = luci.statistics.rrdtool.Graph( luci.util.parse_units( span ), opts )
-	local hosts = graph.tree:host_instances()
-
-	local is_index = false
-	local i, p, inst, idx
-
-	-- deliver image
-	if vars.img then
-		local l12 = require "luci.ltn12"
-		local png = io.open(graph.opts.imgpath .. "/" .. vars.img:gsub("%.+", "."), "r")
-		if png then
-			luci.http.prepare_content("image/png")
-			l12.pump.all(l12.source.file(png), luci.http.write)
-		end
-		return
-	end
-
-	local plugin, instances
-	local images = { }
-
-	-- find requested plugin and instance
-	for i, p in ipairs( luci.dispatcher.context.path ) do
-		if luci.dispatcher.context.path[i] == "graph" then
-			plugin    = luci.dispatcher.context.path[i+1]
-			instances = { luci.dispatcher.context.path[i+2] }
-		end
-	end
-
-	-- no instance requested, find all instances
-	if #instances == 0 then
-		--instances = { graph.tree:plugin_instances( plugin )[1] }
-		instances = graph.tree:plugin_instances( plugin )
-		is_index = (#instances > 1)
-
-	-- index instance requested
-	elseif instances[1] == "-" then
-		instances[1] = ""
-		is_index = true
-	end
-
-	-- render graphs
-	for i, inst in luci.util.vspairs( instances ) do
-		for i, img in luci.util.vspairs( graph:render( plugin, inst, is_index ) ) do
-			table.insert( images, graph:strippngpath( img ) )
-			images[images[#images]] = inst
-		end
-	end
-
-	luci.template.render( "public_statistics/graph", {
-		images           = images,
-		plugin           = plugin,
-		timespans        = spans,
-		current_timespan = span,
-		hosts            = hosts,
-		current_host     = host,
-		is_index         = is_index
-	} )
-end