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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/download/internal/background_service/model_stats.h"
#include "base/metrics/histogram_functions.h"
namespace download {
namespace stats {
namespace {
// Converts Entry::State to histogram suffix.
// Should maps to suffix string in histograms.xml.
std::string EntryStateToHistogramSuffix(Entry::State state) {
std::string suffix;
switch (state) {
case Entry::State::NEW:
return "New";
case Entry::State::AVAILABLE:
return "Available";
case Entry::State::ACTIVE:
return "Active";
case Entry::State::PAUSED:
return "Paused";
case Entry::State::COMPLETE:
return "Complete";
case Entry::State::COUNT:
break;
}
NOTREACHED();
}
// Helper method to log the number of entries under a particular state.
void LogDatabaseRecords(download::Entry::State state, uint32_t record_count) {
std::string name("Download.Service.Db.Records");
name.append(".").append(EntryStateToHistogramSuffix(state));
base::UmaHistogramCustomCounts(name, record_count, 1, 500, 50);
}
} // namespace
void LogModelOperationResult(ModelAction action, bool success) {
if (success) {
base::UmaHistogramEnumeration("Download.Service.Db.Operation.Success",
action);
} else {
base::UmaHistogramEnumeration("Download.Service.Db.Operation.Failure",
action);
}
}
void LogEntries(std::map<Entry::State, uint32_t>& entries_count) {
uint32_t total_records = 0;
for (const auto& entry_count : entries_count)
total_records += entry_count.second;
// Total number of records in database.
base::UmaHistogramCustomCounts("Download.Service.Db.Records", total_records,
1, 500, 50);
// Number of records for each Entry::State.
for (Entry::State state = Entry::State::NEW; state != Entry::State::COUNT;
state = (Entry::State)((int)(state) + 1)) {
LogDatabaseRecords(state, entries_count[state]);
}
}
} // namespace stats
} // namespace download
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