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luci-base: add luci.util.ubus()

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Add luci.util.ubus() convenience wrapper which establishes a connection on
the first call.

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>
This commit is contained in:
Jo-Philipp Wich 2015-01-15 10:52:53 +01:00
parent 00da2bbbd2
commit eb8560061a
1 changed files with 26 additions and 0 deletions
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26
modules/luci-base/luasrc/util.lua
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@ -30,6 +30,9 @@ local string = require "string"
local coroutine = require "coroutine"
local tparser = require "luci.template.parser"
local _ubus = require "ubus"
local _ubus_connection = nil
local getmetatable, setmetatable = getmetatable, setmetatable
local rawget, rawset, unpack = rawget, rawset, unpack
local tostring, type, assert = tostring, type, assert
@ -704,6 +707,29 @@ function execl(command)
return data
end
--- Issue an ubus call.
-- @param object String containing the ubus object to call
-- @param method String containing the ubus method to call
-- @param values Table containing the values to pass
-- @return Table containin the ubus result
function ubus(object, method, data)
if not _ubus_connection then
_ubus_connection = _ubus.connect()
assert(_ubus_connection, "Unable to establish ubus connection")
end
if object and method then
if type(data) ~= "table" then
data = { }
end
return _ubus_connection:call(object, method, data)
elseif object then
return _ubus_connection:signatures(object)
else
return _ubus_connection:objects()
end
end
--- Returns the absolute path to LuCI base directory.
-- @return String containing the directory path
function libpath()