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// Copyright 2011 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/spellcheck/browser/spellcheck_host_metrics.h"
#include <stdint.h>
#include "base/containers/span.h"
#include "base/hash/md5.h"
#include "base/metrics/histogram_functions.h"
#include "base/metrics/histogram_macros.h"
#include "base/numerics/safe_conversions.h"
#include "build/build_config.h"
SpellCheckHostMetrics::SpellCheckHostMetrics()
: misspelled_word_count_(0),
last_misspelled_word_count_(-1),
spellchecked_word_count_(0),
last_spellchecked_word_count_(-1),
suggestion_show_count_(0),
last_suggestion_show_count_(-1),
replaced_word_count_(0),
last_replaced_word_count_(-1),
last_unique_word_count_(0),
start_time_(base::TimeTicks::Now()) {
const uint64_t kHistogramTimerDurationInMinutes = 30;
recording_timer_.Start(FROM_HERE,
base::Minutes(kHistogramTimerDurationInMinutes), this,
&SpellCheckHostMetrics::OnHistogramTimerExpired);
RecordWordCounts();
}
SpellCheckHostMetrics::~SpellCheckHostMetrics() {
}
void SpellCheckHostMetrics::RecordEnabledStats(bool enabled) {
base::UmaHistogramBoolean("SpellCheck.Enabled2", enabled);
}
void SpellCheckHostMetrics::RecordCheckedWordStats(const std::u16string& word,
bool misspell) {
spellchecked_word_count_++;
if (misspell) {
misspelled_word_count_++;
// If an user misspelled, that user should be counted as a part of
// the population. So we ensure to instantiate the histogram
// entries here at the first time.
if (misspelled_word_count_ == 1)
RecordReplacedWordStats(0);
}
// Collects actual number of checked words, excluding duplication.
base::MD5Digest digest;
base::MD5Sum(base::as_byte_span(word), &digest);
checked_word_hashes_.insert(base::MD5DigestToBase16(digest));
RecordWordCounts();
}
void SpellCheckHostMetrics::OnHistogramTimerExpired() {
if (0 < spellchecked_word_count_) {
// Collects word checking rate, which is represented
// as a word count per hour.
base::TimeDelta since_start = base::TimeTicks::Now() - start_time_;
// This shouldn't happen since OnHistogramTimerExpired() is called on
// a 30 minute interval. If the time was 0 we will end up dividing by zero.
CHECK_NE(0, since_start.InSeconds());
size_t checked_words_per_hour = spellchecked_word_count_ *
base::Hours(1).InSeconds() /
since_start.InSeconds();
base::UmaHistogramCounts1M(
"SpellCheck.CheckedWordsPerHour",
base::saturated_cast<int>(checked_words_per_hour));
}
}
void SpellCheckHostMetrics::RecordSuggestionStats(int delta) {
suggestion_show_count_ += delta;
// RecordReplacedWordStats() Calls RecordWordCounts() eventually.
RecordReplacedWordStats(0);
}
void SpellCheckHostMetrics::RecordReplacedWordStats(int delta) {
replaced_word_count_ += delta;
if (suggestion_show_count_) {
int percentage = (100 * replaced_word_count_) / suggestion_show_count_;
UMA_HISTOGRAM_PERCENTAGE("SpellCheck.SuggestionHitRatio", percentage);
}
RecordWordCounts();
}
void SpellCheckHostMetrics::RecordWordCounts() {
if (spellchecked_word_count_ != last_spellchecked_word_count_) {
DCHECK(spellchecked_word_count_ > last_spellchecked_word_count_);
UMA_HISTOGRAM_COUNTS_1M("SpellCheck.CheckedWords",
spellchecked_word_count_);
last_spellchecked_word_count_ = spellchecked_word_count_;
}
if (misspelled_word_count_ != last_misspelled_word_count_) {
DCHECK(misspelled_word_count_ > last_misspelled_word_count_);
UMA_HISTOGRAM_COUNTS_1M("SpellCheck.MisspelledWords",
misspelled_word_count_);
last_misspelled_word_count_ = misspelled_word_count_;
}
if (replaced_word_count_ != last_replaced_word_count_) {
DCHECK(replaced_word_count_ > last_replaced_word_count_);
UMA_HISTOGRAM_COUNTS_1M("SpellCheck.ReplacedWords", replaced_word_count_);
last_replaced_word_count_ = replaced_word_count_;
}
if (checked_word_hashes_.size() != last_unique_word_count_) {
DCHECK(checked_word_hashes_.size() > last_unique_word_count_);
UMA_HISTOGRAM_COUNTS_1M(
"SpellCheck.UniqueWords",
base::saturated_cast<int>(checked_word_hashes_.size()));
last_unique_word_count_ = checked_word_hashes_.size();
}
if (suggestion_show_count_ != last_suggestion_show_count_) {
DCHECK(suggestion_show_count_ > last_suggestion_show_count_);
UMA_HISTOGRAM_COUNTS_1M("SpellCheck.ShownSuggestions",
suggestion_show_count_);
last_suggestion_show_count_ = suggestion_show_count_;
}
}
void SpellCheckHostMetrics::RecordSpellingServiceStats(bool enabled) {
base::UmaHistogramBoolean("SpellCheck.SpellingService.Enabled2", enabled);
}
#if BUILDFLAG(IS_WIN)
// static
void SpellCheckHostMetrics::RecordAcceptLanguageStats(
const LocalesSupportInfo& locales_info) {
base::UmaHistogramExactLinear(
"Spellcheck.Windows.ChromeLocalesSupport2.Both",
base::saturated_cast<int>(
locales_info.locales_supported_by_hunspell_and_native),
20);
base::UmaHistogramExactLinear(
"Spellcheck.Windows.ChromeLocalesSupport2.HunspellOnly",
base::saturated_cast<int>(
locales_info.locales_supported_by_hunspell_only),
20);
base::UmaHistogramExactLinear(
"Spellcheck.Windows.ChromeLocalesSupport2.NativeOnly",
base::saturated_cast<int>(locales_info.locales_supported_by_native_only),
20);
base::UmaHistogramExactLinear(
"Spellcheck.Windows.ChromeLocalesSupport2.NoSupport",
base::saturated_cast<int>(locales_info.unsupported_locales), 20);
}
// static
void SpellCheckHostMetrics::RecordSpellcheckLanguageStats(
const LocalesSupportInfo& locales_info) {
base::UmaHistogramExactLinear(
"Spellcheck.Windows.SpellcheckLocalesSupport2.Both",
base::saturated_cast<int>(
locales_info.locales_supported_by_hunspell_and_native),
20);
base::UmaHistogramExactLinear(
"Spellcheck.Windows.SpellcheckLocalesSupport2.HunspellOnly",
base::saturated_cast<int>(
locales_info.locales_supported_by_hunspell_only),
20);
base::UmaHistogramExactLinear(
"Spellcheck.Windows.SpellcheckLocalesSupport2.NativeOnly",
base::saturated_cast<int>(locales_info.locales_supported_by_native_only),
20);
}
#endif // BUILDFLAG(IS_WIN)
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