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/*
* Copyright (C) 2018 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 LOG_TAG "DrmMetrics"
#include <iomanip>
#include <utility>
#include <android-base/macros.h>
#include <media/stagefright/foundation/base64.h>
#include <mediadrm/DrmMetrics.h>
#include <sys/time.h>
#include <utils/Log.h>
#include <utils/Timers.h>
#include "protos/metrics.pb.h"
using ::android::String16;
using ::android::String8;
using ::android::drm_metrics::DrmFrameworkMetrics;
using ::android::hardware::drm::V1_0::EventType;
using ::android::hardware::drm::V1_2::KeyStatusType;
using ::android::hardware::drm::V1_1::DrmMetricGroup;
namespace {
std::string ToHexString(const android::Vector<uint8_t> &sessionId) {
std::ostringstream out;
out << std::hex << std::setfill('0');
for (size_t i = 0; i < sessionId.size(); i++) {
out << std::setw(2) << (int)(sessionId[i]);
}
return out.str();
}
} // namespace
namespace android {
MediaDrmMetrics::MediaDrmMetrics()
: mOpenSessionCounter("drm.mediadrm.open_session", "status"),
mCloseSessionCounter("drm.mediadrm.close_session", "status"),
mGetKeyRequestTimeUs("drm.mediadrm.get_key_request", "status"),
mProvideKeyResponseTimeUs("drm.mediadrm.provide_key_response", "status"),
mGetProvisionRequestCounter("drm.mediadrm.get_provision_request",
"status"),
mProvideProvisionResponseCounter(
"drm.mediadrm.provide_provision_response", "status"),
mKeyStatusChangeCounter("drm.mediadrm.key_status_change",
"key_status_type"),
mEventCounter("drm.mediadrm.event", "event_type"),
mGetDeviceUniqueIdCounter("drm.mediadrm.get_device_unique_id", "status") {
}
void MediaDrmMetrics::SetSessionStart(
const android::Vector<uint8_t> &sessionId) {
std::string sessionIdHex = ToHexString(sessionId);
mSessionLifespans[sessionIdHex] =
std::make_pair(GetCurrentTimeMs(), (int64_t)0);
}
void MediaDrmMetrics::SetSessionEnd(const android::Vector<uint8_t> &sessionId) {
std::string sessionIdHex = ToHexString(sessionId);
int64_t endTimeMs = GetCurrentTimeMs();
if (mSessionLifespans.find(sessionIdHex) != mSessionLifespans.end()) {
mSessionLifespans[sessionIdHex] =
std::make_pair(mSessionLifespans[sessionIdHex].first, endTimeMs);
} else {
mSessionLifespans[sessionIdHex] = std::make_pair((int64_t)0, endTimeMs);
}
}
status_t MediaDrmMetrics::GetSerializedMetrics(std::string *serializedMetrics) {
if (!serializedMetrics) {
ALOGE("serializedMetrics was unexpectedly null.");
return UNEXPECTED_NULL;
}
DrmFrameworkMetrics metrics;
mOpenSessionCounter.ExportValues(
[&](const android::status_t status, const int64_t value) {
DrmFrameworkMetrics::Counter *counter =
metrics.add_open_session_counter();
counter->set_count(value);
counter->mutable_attributes()->set_error_code(status);
});
mCloseSessionCounter.ExportValues(
[&](const android::status_t status, const int64_t value) {
DrmFrameworkMetrics::Counter *counter =
metrics.add_close_session_counter();
counter->set_count(value);
counter->mutable_attributes()->set_error_code(status);
});
mGetProvisionRequestCounter.ExportValues(
[&](const android::status_t status, const int64_t value) {
DrmFrameworkMetrics::Counter *counter =
metrics.add_get_provisioning_request_counter();
counter->set_count(value);
counter->mutable_attributes()->set_error_code(status);
});
mProvideProvisionResponseCounter.ExportValues(
[&](const android::status_t status, const int64_t value) {
DrmFrameworkMetrics::Counter *counter =
metrics.add_provide_provisioning_response_counter();
counter->set_count(value);
counter->mutable_attributes()->set_error_code(status);
});
mKeyStatusChangeCounter.ExportValues(
[&](const KeyStatusType key_status_type, const int64_t value) {
DrmFrameworkMetrics::Counter *counter =
metrics.add_key_status_change_counter();
counter->set_count(value);
counter->mutable_attributes()->set_key_status_type(
(uint32_t)key_status_type);
});
mEventCounter.ExportValues(
[&](const EventType event_type, const int64_t value) {
DrmFrameworkMetrics::Counter *counter =
metrics.add_event_callback_counter();
counter->set_count(value);
counter->mutable_attributes()->set_event_type((uint32_t)event_type);
});
mGetDeviceUniqueIdCounter.ExportValues(
[&](const status_t status, const int64_t value) {
DrmFrameworkMetrics::Counter *counter =
metrics.add_get_device_unique_id_counter();
counter->set_count(value);
counter->mutable_attributes()->set_error_code(status);
});
mGetKeyRequestTimeUs.ExportValues(
[&](const status_t status, const EventStatistics &stats) {
DrmFrameworkMetrics::DistributionMetric *metric =
metrics.add_get_key_request_time_us();
metric->set_min(stats.min);
metric->set_max(stats.max);
metric->set_mean(stats.mean);
metric->set_operation_count(stats.count);
metric->set_variance(stats.sum_squared_deviation / stats.count);
metric->mutable_attributes()->set_error_code(status);
});
mProvideKeyResponseTimeUs.ExportValues(
[&](const status_t status, const EventStatistics &stats) {
DrmFrameworkMetrics::DistributionMetric *metric =
metrics.add_provide_key_response_time_us();
metric->set_min(stats.min);
metric->set_max(stats.max);
metric->set_mean(stats.mean);
metric->set_operation_count(stats.count);
metric->set_variance(stats.sum_squared_deviation / stats.count);
metric->mutable_attributes()->set_error_code(status);
});
for (const auto &sessionLifespan : mSessionLifespans) {
auto *map = metrics.mutable_session_lifetimes();
(*map)[sessionLifespan.first].set_start_time_ms(
sessionLifespan.second.first);
(*map)[sessionLifespan.first].set_end_time_ms(
sessionLifespan.second.second);
}
if (!metrics.SerializeToString(serializedMetrics)) {
ALOGE("Failed to serialize metrics.");
return UNKNOWN_ERROR;
}
return OK;
}
std::map<std::string, std::pair<int64_t, int64_t>> MediaDrmMetrics::GetSessionLifespans() const {
return mSessionLifespans;
}
int64_t MediaDrmMetrics::GetCurrentTimeMs() {
struct timeval tv;
gettimeofday(&tv, NULL);
return ((int64_t)tv.tv_sec * 1000) + ((int64_t)tv.tv_usec / 1000);
}
} // namespace android
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