| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * 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. |
| */ |
| |
| #include "LogEntryMatcherManager.h" |
| #include <log/event_tag_map.h> |
| #include <log/logprint.h> |
| #include <utils/Errors.h> |
| #include <cutils/log.h> |
| #include <unordered_map> |
| #include <frameworks/base/cmds/statsd/src/statsd_config.pb.h> |
| |
| using std::unordered_map; |
| using std::string; |
| |
| namespace android { |
| namespace os { |
| namespace statsd { |
| |
| bool LogEntryMatcherManager::matches(const LogEntryMatcher &matcher, const int tagId, |
| const unordered_map<int, long> &intMap, |
| const unordered_map<int, string> &strMap, |
| const unordered_map<int, float> &floatMap, |
| const unordered_map<int, bool> &boolMap) { |
| if (matcher.has_combination()) { // Need to evaluate composite matching |
| switch (matcher.combination().operation()) { |
| case LogicalOperation::AND: |
| for (auto nestedMatcher : matcher.combination().matcher()) { |
| if (!matches(nestedMatcher, tagId, intMap, strMap, floatMap, boolMap)) { |
| return false; // return false if any nested matcher is false; |
| } |
| } |
| return true; // Otherwise, return true. |
| case LogicalOperation::OR: |
| for (auto nestedMatcher : matcher.combination().matcher()) { |
| if (matches(nestedMatcher, tagId, intMap, strMap, floatMap, boolMap)) { |
| return true; // return true if any nested matcher is true; |
| } |
| } |
| return false; |
| case LogicalOperation::NOT: |
| return !matches(matcher.combination().matcher(0), tagId, intMap, strMap, floatMap, |
| boolMap); |
| |
| // Case NAND is just inverting the return statement of AND |
| case LogicalOperation::NAND: |
| for (auto nestedMatcher : matcher.combination().matcher()) { |
| auto simple = nestedMatcher.simple_log_entry_matcher(); |
| if (!matches(nestedMatcher, tagId, intMap, strMap, floatMap, boolMap)) { |
| return true; // return false if any nested matcher is false; |
| } |
| } |
| return false; // Otherwise, return true. |
| case LogicalOperation::NOR: |
| for (auto nestedMatcher : matcher.combination().matcher()) { |
| if (matches(nestedMatcher, tagId, intMap, strMap, floatMap, boolMap)) { |
| return false; // return true if any nested matcher is true; |
| } |
| } |
| return true; |
| } |
| return false; |
| } else { |
| return matchesSimple(matcher.simple_log_entry_matcher(), tagId, intMap, strMap, floatMap, |
| boolMap); |
| } |
| } |
| |
| bool LogEntryMatcherManager::matchesSimple(const SimpleLogEntryMatcher &simpleMatcher, |
| const int tagId, |
| const unordered_map<int, long> &intMap, |
| const unordered_map<int, string> &strMap, |
| const unordered_map<int, float> &floatMap, |
| const unordered_map<int, bool> &boolMap) { |
| for (int i = 0; i < simpleMatcher.tag_size(); i++) { |
| if (simpleMatcher.tag(i) != tagId) { |
| continue; |
| } |
| |
| // now see if this event is interesting to us -- matches ALL the matchers |
| // defined in the metrics. |
| bool allMatched = true; |
| for (int j = 0; j < simpleMatcher.key_value_matcher_size(); j++) { |
| auto cur = simpleMatcher.key_value_matcher(j); |
| |
| // TODO: Check if this key is a magic key (eg package name). |
| int key = cur.key_matcher().key(); |
| |
| switch (cur.value_matcher_case()) { |
| case KeyValueMatcher::ValueMatcherCase::kEqString: { |
| auto it = strMap.find(key); |
| if (it == strMap.end() || cur.eq_string().compare(it->second) != 0) { |
| allMatched = false; |
| } |
| break; |
| } |
| case KeyValueMatcher::ValueMatcherCase::kEqInt: { |
| auto it = intMap.find(key); |
| if (it == intMap.end() || cur.eq_int() != it->second) { |
| allMatched = false; |
| } |
| break; |
| } |
| case KeyValueMatcher::ValueMatcherCase::kEqBool: { |
| auto it = boolMap.find(key); |
| if (it == boolMap.end() || cur.eq_bool() != it->second) { |
| allMatched = false; |
| } |
| break; |
| } |
| // Begin numeric comparisons |
| case KeyValueMatcher::ValueMatcherCase::kLtInt: { |
| auto it = intMap.find(key); |
| if (it == intMap.end() || cur.lt_int() <= it->second) { |
| allMatched = false; |
| } |
| break; |
| } |
| case KeyValueMatcher::ValueMatcherCase::kGtInt: { |
| auto it = intMap.find(key); |
| if (it == intMap.end() || cur.gt_int() >= it->second) { |
| allMatched = false; |
| } |
| break; |
| } |
| case KeyValueMatcher::ValueMatcherCase::kLtFloat: { |
| auto it = floatMap.find(key); |
| if (it == floatMap.end() || cur.lt_float() <= it->second) { |
| allMatched = false; |
| } |
| break; |
| } |
| case KeyValueMatcher::ValueMatcherCase::kGtFloat: { |
| auto it = floatMap.find(key); |
| if (it == floatMap.end() || cur.gt_float() >= it->second) { |
| allMatched = false; |
| } |
| break; |
| } |
| // Begin comparisons with equality |
| case KeyValueMatcher::ValueMatcherCase::kLteInt: { |
| auto it = intMap.find(key); |
| if (it == intMap.end() || cur.lte_int() < it->second) { |
| allMatched = false; |
| } |
| break; |
| } |
| case KeyValueMatcher::ValueMatcherCase::kGteInt: { |
| auto it = intMap.find(key); |
| if (it == intMap.end() || cur.gte_int() > it->second) { |
| allMatched = false; |
| } |
| break; |
| } |
| case KeyValueMatcher::ValueMatcherCase::VALUE_MATCHER_NOT_SET: |
| // If value matcher is not present, assume that we match. |
| break; |
| } |
| } |
| |
| if (allMatched) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| } // namespace statsd |
| } // namespace os |
| } // namespace android |