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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/extensions/api/metrics_private/metrics_private_api.h"
#include <limits.h>
#include <algorithm>
#include "base/metrics/field_trial.h"
#include "base/metrics/histogram.h"
#include "base/metrics/sparse_histogram.h"
#include "chrome/browser/metrics/chrome_metrics_service_accessor.h"
#include "chrome/common/extensions/api/metrics_private.h"
#include "components/variations/variations_associated_data.h"
#include "content/public/browser/user_metrics.h"
#include "extensions/common/extension.h"
namespace extensions {
namespace GetIsCrashReportingEnabled =
api::metrics_private::GetIsCrashReportingEnabled;
namespace GetVariationParams = api::metrics_private::GetVariationParams;
namespace GetFieldTrial = api::metrics_private::GetFieldTrial;
namespace RecordUserAction = api::metrics_private::RecordUserAction;
namespace RecordValue = api::metrics_private::RecordValue;
namespace RecordSparseValue = api::metrics_private::RecordSparseValue;
namespace RecordPercentage = api::metrics_private::RecordPercentage;
namespace RecordCount = api::metrics_private::RecordCount;
namespace RecordSmallCount = api::metrics_private::RecordSmallCount;
namespace RecordMediumCount = api::metrics_private::RecordMediumCount;
namespace RecordTime = api::metrics_private::RecordTime;
namespace RecordMediumTime = api::metrics_private::RecordMediumTime;
namespace RecordLongTime = api::metrics_private::RecordLongTime;
namespace {
const size_t kMaxBuckets = 10000; // We don't ever want more than these many
// buckets; there is no real need for them
// and would cause crazy memory usage
} // namespace
bool MetricsPrivateGetIsCrashReportingEnabledFunction::RunSync() {
SetResult(new base::FundamentalValue(
ChromeMetricsServiceAccessor::IsMetricsAndCrashReportingEnabled()));
return true;
}
bool MetricsPrivateGetFieldTrialFunction::RunSync() {
std::string name;
EXTENSION_FUNCTION_VALIDATE(args_->GetString(0, &name));
SetResult(new base::StringValue(base::FieldTrialList::FindFullName(name)));
return true;
}
bool MetricsPrivateGetVariationParamsFunction::RunSync() {
scoped_ptr<GetVariationParams::Params> params(
GetVariationParams::Params::Create(*args_));
EXTENSION_FUNCTION_VALIDATE(params.get());
GetVariationParams::Results::Params result;
if (variations::GetVariationParams(params->name,
&result.additional_properties)) {
SetResult(result.ToValue().release());
}
return true;
}
bool MetricsPrivateRecordUserActionFunction::RunSync() {
scoped_ptr<RecordUserAction::Params> params(
RecordUserAction::Params::Create(*args_));
EXTENSION_FUNCTION_VALIDATE(params.get());
content::RecordComputedAction(params->name);
return true;
}
bool MetricsHistogramHelperFunction::RecordValue(
const std::string& name,
base::HistogramType type,
int min, int max, size_t buckets,
int sample) {
// Make sure toxic values don't get to internal code.
// Fix for maximums
min = std::min(min, INT_MAX - 3);
max = std::min(max, INT_MAX - 3);
buckets = std::min(buckets, kMaxBuckets);
// Fix for minimums.
min = std::max(min, 1);
max = std::max(max, min + 1);
buckets = std::max(buckets, static_cast<size_t>(3));
// Trim buckets down to a maximum of the given range + over/underflow buckets
if (buckets > static_cast<size_t>(max - min + 2))
buckets = max - min + 2;
base::HistogramBase* counter;
if (type == base::LINEAR_HISTOGRAM) {
counter = base::LinearHistogram::FactoryGet(
name, min, max, buckets,
base::HistogramBase::kUmaTargetedHistogramFlag);
} else {
counter = base::Histogram::FactoryGet(
name, min, max, buckets,
base::HistogramBase::kUmaTargetedHistogramFlag);
}
// The histogram can be NULL if it is constructed with bad arguments. Ignore
// that data for this API. An error message will be logged.
if (counter)
counter->Add(sample);
return true;
}
bool MetricsPrivateRecordValueFunction::RunSync() {
scoped_ptr<RecordValue::Params> params(RecordValue::Params::Create(*args_));
EXTENSION_FUNCTION_VALIDATE(params.get());
// Get the histogram parameters from the metric type object.
std::string type = api::metrics_private::ToString(params->metric.type);
base::HistogramType histogram_type(type == "histogram-linear" ?
base::LINEAR_HISTOGRAM : base::HISTOGRAM);
return RecordValue(params->metric.metric_name, histogram_type,
params->metric.min, params->metric.max,
params->metric.buckets, params->value);
}
bool MetricsPrivateRecordSparseValueFunction::RunSync() {
scoped_ptr<RecordSparseValue::Params> params(
RecordSparseValue::Params::Create(*args_));
EXTENSION_FUNCTION_VALIDATE(params.get());
// This particular UMA_HISTOGRAM_ macro is okay for
// non-runtime-constant strings.
UMA_HISTOGRAM_SPARSE_SLOWLY(params->metric_name, params->value);
return true;
}
bool MetricsPrivateRecordPercentageFunction::RunSync() {
scoped_ptr<RecordPercentage::Params> params(
RecordPercentage::Params::Create(*args_));
EXTENSION_FUNCTION_VALIDATE(params.get());
return RecordValue(params->metric_name, base::LINEAR_HISTOGRAM,
1, 101, 102, params->value);
}
bool MetricsPrivateRecordCountFunction::RunSync() {
scoped_ptr<RecordCount::Params> params(RecordCount::Params::Create(*args_));
EXTENSION_FUNCTION_VALIDATE(params.get());
return RecordValue(params->metric_name, base::HISTOGRAM,
1, 1000000, 50, params->value);
}
bool MetricsPrivateRecordSmallCountFunction::RunSync() {
scoped_ptr<RecordSmallCount::Params> params(
RecordSmallCount::Params::Create(*args_));
EXTENSION_FUNCTION_VALIDATE(params.get());
return RecordValue(params->metric_name, base::HISTOGRAM,
1, 100, 50, params->value);
}
bool MetricsPrivateRecordMediumCountFunction::RunSync() {
scoped_ptr<RecordMediumCount::Params> params(
RecordMediumCount::Params::Create(*args_));
EXTENSION_FUNCTION_VALIDATE(params.get());
return RecordValue(params->metric_name, base::HISTOGRAM,
1, 10000, 50, params->value);
}
bool MetricsPrivateRecordTimeFunction::RunSync() {
scoped_ptr<RecordTime::Params> params(RecordTime::Params::Create(*args_));
EXTENSION_FUNCTION_VALIDATE(params.get());
static const int kTenSecMs = 10 * 1000;
return RecordValue(params->metric_name, base::HISTOGRAM,
1, kTenSecMs, 50, params->value);
}
bool MetricsPrivateRecordMediumTimeFunction::RunSync() {
scoped_ptr<RecordMediumTime::Params> params(
RecordMediumTime::Params::Create(*args_));
EXTENSION_FUNCTION_VALIDATE(params.get());
static const int kThreeMinMs = 3 * 60 * 1000;
return RecordValue(params->metric_name, base::HISTOGRAM,
1, kThreeMinMs, 50, params->value);
}
bool MetricsPrivateRecordLongTimeFunction::RunSync() {
scoped_ptr<RecordLongTime::Params> params(
RecordLongTime::Params::Create(*args_));
EXTENSION_FUNCTION_VALIDATE(params.get());
static const int kOneHourMs = 60 * 60 * 1000;
return RecordValue(params->metric_name, base::HISTOGRAM,
1, kOneHourMs, 50, params->value);
}
} // namespace extensions
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