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/*
* 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.
*/
#define DEBUG false // STOPSHIP if true
#include "Log.h"
#include <mutex>
#include "HashableDimensionKey.h"
#include "FieldValue.h"
namespace android {
namespace os {
namespace statsd {
using std::string;
using std::vector;
android::hash_t hashDimension(const HashableDimensionKey& value) {
android::hash_t hash = 0;
for (const auto& fieldValue : value.getValues()) {
hash = android::JenkinsHashMix(hash, android::hash_type((int)fieldValue.mField.getField()));
hash = android::JenkinsHashMix(hash, android::hash_type((int)fieldValue.mField.getTag()));
hash = android::JenkinsHashMix(hash, android::hash_type((int)fieldValue.mValue.getType()));
switch (fieldValue.mValue.getType()) {
case INT:
hash = android::JenkinsHashMix(hash,
android::hash_type(fieldValue.mValue.int_value));
break;
case LONG:
hash = android::JenkinsHashMix(hash,
android::hash_type(fieldValue.mValue.long_value));
break;
case STRING:
hash = android::JenkinsHashMix(hash, static_cast<uint32_t>(std::hash<std::string>()(
fieldValue.mValue.str_value)));
break;
case FLOAT: {
hash = android::JenkinsHashMix(hash,
android::hash_type(fieldValue.mValue.float_value));
break;
}
default:
break;
}
}
return JenkinsHashWhiten(hash);
}
bool filterValues(const vector<Matcher>& matcherFields, const vector<FieldValue>& values,
HashableDimensionKey* output) {
size_t num_matches = 0;
for (const auto& value : values) {
for (size_t i = 0; i < matcherFields.size(); ++i) {
const auto& matcher = matcherFields[i];
if (value.mField.matches(matcher)) {
output->addValue(value);
output->mutableValue(num_matches)->mField.setTag(value.mField.getTag());
output->mutableValue(num_matches)->mField.setField(
value.mField.getField() & matcher.mMask);
num_matches++;
}
}
}
return num_matches > 0;
}
void filterGaugeValues(const std::vector<Matcher>& matcherFields,
const std::vector<FieldValue>& values, std::vector<FieldValue>* output) {
for (const auto& field : matcherFields) {
for (const auto& value : values) {
if (value.mField.matches(field)) {
output->push_back(value);
}
}
}
}
void getDimensionForCondition(const std::vector<FieldValue>& eventValues,
const Metric2Condition& links,
HashableDimensionKey* conditionDimension) {
// Get the dimension first by using dimension from what.
filterValues(links.metricFields, eventValues, conditionDimension);
size_t count = conditionDimension->getValues().size();
if (count != links.conditionFields.size()) {
// ALOGE("WTF condition link is bad");
return;
}
for (size_t i = 0; i < count; i++) {
conditionDimension->mutableValue(i)->mField.setField(
links.conditionFields[i].mMatcher.getField());
conditionDimension->mutableValue(i)->mField.setTag(
links.conditionFields[i].mMatcher.getTag());
}
}
bool LessThan(const vector<FieldValue>& s1, const vector<FieldValue>& s2) {
if (s1.size() != s2.size()) {
return s1.size() < s2.size();
}
size_t count = s1.size();
for (size_t i = 0; i < count; i++) {
if (s1[i] != s2[i]) {
return s1[i] < s2[i];
}
}
return false;
}
bool HashableDimensionKey::operator==(const HashableDimensionKey& that) const {
if (mValues.size() != that.getValues().size()) {
return false;
}
size_t count = mValues.size();
for (size_t i = 0; i < count; i++) {
if (mValues[i] != (that.getValues())[i]) {
return false;
}
}
return true;
};
bool HashableDimensionKey::operator<(const HashableDimensionKey& that) const {
return LessThan(getValues(), that.getValues());
};
bool HashableDimensionKey::contains(const HashableDimensionKey& that) const {
if (mValues.size() < that.getValues().size()) {
return false;
}
if (mValues.size() == that.getValues().size()) {
return (*this) == that;
}
for (const auto& value : that.getValues()) {
bool found = false;
for (const auto& myValue : mValues) {
if (value.mField == myValue.mField && value.mValue == myValue.mValue) {
found = true;
break;
}
}
if (!found) {
return false;
}
}
return true;
}
string HashableDimensionKey::toString() const {
std::string output;
for (const auto& value : mValues) {
output += StringPrintf("(%d)%#x->%s ", value.mField.getTag(), value.mField.getField(),
value.mValue.toString().c_str());
}
return output;
}
bool MetricDimensionKey::operator==(const MetricDimensionKey& that) const {
return mDimensionKeyInWhat == that.getDimensionKeyInWhat() &&
mDimensionKeyInCondition == that.getDimensionKeyInCondition();
};
string MetricDimensionKey::toString() const {
return mDimensionKeyInWhat.toString() + mDimensionKeyInCondition.toString();
}
bool MetricDimensionKey::operator<(const MetricDimensionKey& that) const {
if (mDimensionKeyInWhat < that.getDimensionKeyInWhat()) {
return true;
} else if (that.getDimensionKeyInWhat() < mDimensionKeyInWhat) {
return false;
}
return mDimensionKeyInCondition < that.getDimensionKeyInCondition();
}
} // namespace statsd
} // namespace os
} // namespace android
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