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37388c56ff
Validate rule outputs when loading rules by attempting to create a
formatter based on the rule's output field. If there's an error, it will
propagate up through load_rules and cause falco to exit rather than
discover the problem only when trying to format the event and the rule's
output field.
This required moving formats.{cpp,h} into the falco engine directory
from the falco general directory. Note that these functions are loaded
twice in the two lua states used by falco (engine and outputs).
There's also a couple of minor cleanups:
- falco_formats had a private instance variable that was unused, remove
it.
- rename the package for the falco_formats functions to formats instead
of falco so it's more standalone.
- don't throw a c++ exception in falco_formats::formatter. Instead
generate a lua error, which is handled more cleanly.
- free_formatter doesn't return any values, so set the return value of
the function to 0.
47 lines
1.1 KiB
C++
47 lines
1.1 KiB
C++
/*
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Copyright (C) 2016 Draios inc.
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This file is part of falco.
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falco is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License version 2 as
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published by the Free Software Foundation.
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falco is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with falco. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "sinsp.h"
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extern "C" {
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#include "lua.h"
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#include "lualib.h"
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#include "lauxlib.h"
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}
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class sinsp_evt_formatter;
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class falco_formats
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{
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public:
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static void init(sinsp* inspector, lua_State *ls, bool json_output);
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// formatter = falco.formatter(format_string)
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static int formatter(lua_State *ls);
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// falco.free_formatter(formatter)
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static int free_formatter(lua_State *ls);
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// formatted_string = falco.format_event(evt, formatter)
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static int format_event(lua_State *ls);
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static sinsp* s_inspector;
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};
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