mirror of
https://github.com/falcosecurity/falco.git
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93 lines
2.3 KiB
C++
93 lines
2.3 KiB
C++
/*
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Copyright (C) 2022 The Falco Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#include "stats_manager.h"
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#include "falco_common.h"
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using namespace std;
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stats_manager::stats_manager()
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: m_total(0)
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{
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}
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stats_manager::~stats_manager()
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{
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clear();
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}
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void stats_manager::clear()
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{
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m_total = 0;
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m_by_rule_id.clear();
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m_by_priority.clear();
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}
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void stats_manager::format(
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const indexed_vector<falco_rule>& rules,
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string& out) const
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{
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string fmt;
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out = "Events detected: " + to_string(m_total) + "\n";
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out += "Rule counts by severity:\n";
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for (size_t i = 0; i < m_by_priority.size(); i++)
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{
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auto val = m_by_priority[i].get()->load();
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if (val > 0)
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{
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falco_common::format_priority(
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(falco_common::priority_type) i, fmt, true);
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transform(fmt.begin(), fmt.end(), fmt.begin(), ::toupper);
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out += " " + fmt + ": " + to_string(val) + "\n";
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}
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}
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out += "Triggered rules by rule name:\n";
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for (size_t i = 0; i < m_by_rule_id.size(); i++)
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{
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auto val = m_by_rule_id[i].get()->load();
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if (val > 0)
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{
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out += " " + rules.at(i)->name + ": " + to_string(val) + "\n";
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}
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}
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}
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void stats_manager::on_rule_loaded(const falco_rule& rule)
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{
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while (m_by_rule_id.size() <= rule.id)
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{
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m_by_rule_id.emplace_back();
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m_by_rule_id[m_by_rule_id.size() - 1].reset(new atomic<uint64_t>(0));
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}
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while (m_by_priority.size() <= (size_t) rule.priority)
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{
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m_by_priority.emplace_back();
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m_by_priority[m_by_priority.size() - 1].reset(new atomic<uint64_t>(0));
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}
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}
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void stats_manager::on_event(const falco_rule& rule)
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{
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if (m_by_rule_id.size() <= rule.id
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|| m_by_priority.size() <= (size_t) rule.priority)
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{
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throw falco_exception("rule id or priority out of bounds");
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}
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m_total.fetch_add(1, std::memory_order_relaxed);
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m_by_rule_id[rule.id]->fetch_add(1, std::memory_order_relaxed);
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m_by_priority[(size_t) rule.priority]->fetch_add(1, std::memory_order_relaxed);
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}
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