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-- Copyright (c) 2018-2021, OARC, Inc.
-- All rights reserved.
--
-- This file is part of dnsjit.
--
-- dnsjit is free software: you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation, either version 3 of the License, or
-- (at your option) any later version.
--
-- dnsjit is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with dnsjit. If not, see <http://www.gnu.org/licenses/>.
-- dnsjit.filter.split
-- Passthrough to other receivers in various ways
-- local filter = require("dnsjit.filter.split").new()
-- filter.receiver(...)
-- filter.receiver(...)
-- filter.receiver(...)
-- input.receiver(filter)
--
-- Filter to pass objects to others in various ways.
module(...,package.seeall)
require("dnsjit.filter.split_h")
local ffi = require("ffi")
local C = ffi.C
local t_name = "filter_split_t"
local filter_split_t = ffi.typeof(t_name)
local Split = {}
-- Create a new Split filter.
function Split.new()
local self = {
receivers = {},
obj = filter_split_t(),
}
C.filter_split_init(self.obj)
ffi.gc(self.obj, C.filter_split_destroy)
return setmetatable(self, { __index = Split })
end
-- Return the Log object to control logging of this instance or module.
function Split:log()
if self == nil then
return C.filter_split_log()
end
return self.obj._log
end
-- Set the passthrough mode to round robin (default mode).
function Split:roundrobin()
self.obj.mode = "FILTER_SPLIT_MODE_ROUNDROBIN"
end
-- Set the passthrough mode to send to all receivers.
function Split:sendall()
self.obj.mode = "FILTER_SPLIT_MODE_SENDALL"
end
-- Return the C functions and context for receiving objects.
function Split:receive()
return C.filter_split_receiver(self.obj), self.obj
end
-- Set the receiver to pass objects to, this can be called multiple times to
-- set addtional receivers.
function Split:receiver(o)
local recv, ctx = o:receive()
C.filter_split_add(self.obj, recv, ctx)
table.insert(self.receivers, o)
end
return Split
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