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- --[[
- Copyright (c) 2017, Vsevolod Stakhov <vsevolod@highsecure.ru>
-
- Licensed under the Apache License, Version 2.0 (the "License");
- you may not use this file except in compliance with the License.
- You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing, software
- distributed under the License is distributed on an "AS IS" BASIS,
- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- See the License for the specific language governing permissions and
- limitations under the License.
- ]]--
-
- local rspamd_logger = require "rspamd_logger"
- local torch
- local exports = {}
-
- local lua_nn_models = {}
-
- local conf_section = rspamd_config:get_all_opt("nn_models")
-
- if conf_section then
- if rspamd_config:has_torch() then
- torch = require "torch"
- torch.setnumthreads(1)
- end
- end
-
- if torch then
- exports.load_rspamd_nn = function()
- local function gen_process_callback(name)
- return function(str)
- if str then
- local f = torch.MemoryFile(torch.CharStorage():string(str))
- local ret, tnn_or_err = pcall(function() f:readObject() end)
- if not ret then
- rspamd_logger.errx(rspamd_config, "cannot load neural net model %s: %s",
- name, tnn_or_err)
- else
- rspamd_logger.infox(rspamd_config, "loaded NN model %s: %s bytes",
- name, #str)
- lua_nn_models[name] = tnn_or_err
- end
- end
- end
- end
-
- if conf_section and type(conf_section) == 'table' then
- for k,v in pairs(conf_section) do
- if not rspamd_config:add_map(v, "nn map " .. k, gen_process_callback(k)) then
- rspamd_logger.warnx(rspamd_config, 'cannot load NN map %1', k)
- end
- end
- end
- end
- exports.try_rspamd_nn = function(name, input)
- if not lua_nn_models.name then
- return false, 0.0
- else
- local ret, res_or_err = pcall(function() lua_nn_models.name:forward(input) end)
- if not ret then
- rspamd_logger.errx(rspamd_config, "cannot run neural net model %s: %s",
- name, res_or_err)
- else
- return true, tonumber(res_or_err)
- end
- end
-
- return false, 0.0
- end
- else
- exports.load_rspamd_nn = function()
- end
- exports.try_rspamd_nn = function(name, input)
- return false,0.0
- end
- end
-
- return exports
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