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/*
* Copyright 2022 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.
*/
#include "metrics_state.h"
#include <frameworks/proto_logging/stats/enums/bluetooth/hci/enums.pb.h>
#include <frameworks/proto_logging/stats/enums/bluetooth/le/enums.pb.h>
#include <chrono>
#include <climits>
#include <memory>
#include <unordered_map>
#include <utility>
#include "common/strings.h"
#include "hci/address.h"
#include "metrics/utils.h"
#include "os/log.h"
#include "os/metrics.h"
namespace bluetooth {
namespace metrics {
using android::bluetooth::le::LeConnectionOriginType;
using android::bluetooth::le::LeConnectionState;
using android::bluetooth::le::LeConnectionType;
// const static ClockTimePoint kInvalidTimePoint{};
/*
* This is the device level metrics state, which will be modified based on
* incoming state events.
*
*/
void LEConnectionMetricState::AddStateChangedEvent(
LeConnectionOriginType origin_type,
LeConnectionType connection_type,
LeConnectionState transaction_state,
std::vector<std::pair<os::ArgumentType, int>> argument_list) {
LOG_INFO(
"LEConnectionMetricState: Origin Type: %s, Connection Type: %s, Transaction State: "
"%s",
common::ToHexString(origin_type).c_str(),
common::ToHexString(connection_type).c_str(),
common::ToHexString(transaction_state).c_str());
ClockTimePoint current_timestamp = std::chrono::high_resolution_clock::now();
state = transaction_state;
// Assign the origin of the connection
if (connection_origin_type == LeConnectionOriginType::ORIGIN_UNSPECIFIED) {
connection_origin_type = origin_type;
}
if (input_connection_type == LeConnectionType::CONNECTION_TYPE_UNSPECIFIED) {
input_connection_type = connection_type;
}
if (start_timepoint == kInvalidTimePoint) {
start_timepoint = current_timestamp;
}
end_timepoint = current_timestamp;
switch (state) {
case LeConnectionState::STATE_LE_ACL_START: {
int connection_type_cid = GetArgumentTypeFromList(argument_list, os::ArgumentType::L2CAP_CID);
if (connection_type_cid != -1) {
LeConnectionType connection_type = GetLeConnectionTypeFromCID(connection_type_cid);
if (connection_type != LeConnectionType::CONNECTION_TYPE_UNSPECIFIED) {
LOG_INFO("LEConnectionMetricsRemoteDevice: Populating the connection type\n");
input_connection_type = connection_type;
}
}
break;
}
case LeConnectionState::STATE_LE_ACL_END: {
int acl_status_code_from_args =
GetArgumentTypeFromList(argument_list, os::ArgumentType::ACL_STATUS_CODE);
acl_status_code = static_cast<android::bluetooth::hci::StatusEnum>(acl_status_code_from_args);
acl_state = LeAclConnectionState::LE_ACL_SUCCESS;
if (acl_status_code != android::bluetooth::hci::StatusEnum::STATUS_SUCCESS) {
acl_state = LeAclConnectionState::LE_ACL_FAILED;
}
break;
}
case LeConnectionState::STATE_LE_ACL_TIMEOUT: {
int acl_status_code_from_args =
GetArgumentTypeFromList(argument_list, os::ArgumentType::ACL_STATUS_CODE);
acl_status_code = static_cast<android::bluetooth::hci::StatusEnum>(acl_status_code_from_args);
acl_state = LeAclConnectionState::LE_ACL_FAILED;
break;
}
case LeConnectionState::STATE_LE_ACL_CANCEL: {
acl_state = LeAclConnectionState::LE_ACL_FAILED;
is_cancelled = true;
break;
}
[[fallthrough]];
default: {
// do nothing
}
}
}
bool LEConnectionMetricState::IsEnded() {
return acl_state == LeAclConnectionState::LE_ACL_SUCCESS ||
acl_state == LeAclConnectionState::LE_ACL_FAILED;
}
bool LEConnectionMetricState::IsStarted() {
return state == LeConnectionState::STATE_LE_ACL_START;
}
bool LEConnectionMetricState::IsCancelled() {
return is_cancelled;
}
// Initialize the LEConnectionMetricsRemoteDevice
LEConnectionMetricsRemoteDevice::LEConnectionMetricsRemoteDevice() {
metrics_logger_module = new MetricsLoggerModule();
}
LEConnectionMetricsRemoteDevice::LEConnectionMetricsRemoteDevice(
BaseMetricsLoggerModule* baseMetricsLoggerModule) {
metrics_logger_module = baseMetricsLoggerModule;
}
// Uploading the session
void LEConnectionMetricsRemoteDevice::UploadLEConnectionSession(const hci::Address& address) {
auto it = opened_devices.find(address);
if (it != opened_devices.end()) {
os::LEConnectionSessionOptions session_options;
session_options.acl_connection_state = it->second->acl_state;
session_options.origin_type = it->second->connection_origin_type;
session_options.transaction_type = it->second->input_connection_type;
session_options.latency = bluetooth::metrics::get_timedelta_nanos(
it->second->start_timepoint, it->second->end_timepoint);
session_options.remote_address = address;
session_options.status = it->second->acl_status_code;
// TODO: keep the acl latency the same as the overall latency for now
// When more events are added, we will an overall latency
session_options.acl_latency = session_options.latency;
session_options.is_cancelled = it->second->is_cancelled;
metrics_logger_module->LogMetricBluetoothLESession(session_options);
opened_devices.erase(it);
}
}
// Implementation of metrics per remote device
void LEConnectionMetricsRemoteDevice::AddStateChangedEvent(
const hci::Address& address,
LeConnectionOriginType origin_type,
LeConnectionType connection_type,
LeConnectionState transaction_state,
std::vector<std::pair<os::ArgumentType, int>> argument_list) {
LOG_INFO(
"LEConnectionMetricsRemoteDevice: Transaction State %s, Connection Type %s, Origin Type %s\n",
common::ToHexString(transaction_state).c_str(),
common::ToHexString(connection_type).c_str(),
common::ToHexString(origin_type).c_str());
if (address.IsEmpty()) {
LOG_INFO(
"LEConnectionMetricsRemoteDevice: Empty Address Cancellation %s, %s, %s\n",
common::ToHexString(transaction_state).c_str(),
common::ToHexString(connection_type).c_str(),
common::ToHexString(transaction_state).c_str());
for (auto& device_metric : device_metrics) {
if (device_metric->IsStarted() &&
transaction_state == LeConnectionState::STATE_LE_ACL_CANCEL) {
LOG_INFO("LEConnectionMetricsRemoteDevice: Cancellation Begin");
// cancel the connection
device_metric->AddStateChangedEvent(
origin_type, connection_type, transaction_state, argument_list);
continue;
}
if (device_metric->IsCancelled() &&
transaction_state == LeConnectionState::STATE_LE_ACL_END) {
LOG_INFO("LEConnectionMetricsRemoteDevice: Session is now complete after cancellation");
// complete the connection
device_metric->AddStateChangedEvent(
origin_type, connection_type, transaction_state, argument_list);
UploadLEConnectionSession(address);
continue;
}
}
return;
}
auto it = opened_devices.find(address);
if (it == opened_devices.end()) {
device_metrics.push_back(std::make_unique<LEConnectionMetricState>(address));
it = opened_devices.insert(std::begin(opened_devices), {address, device_metrics.back().get()});
}
it->second->AddStateChangedEvent(origin_type, connection_type, transaction_state, argument_list);
// Connection is finished
if (it->second->IsEnded()) {
UploadLEConnectionSession(address);
}
}
// MetricsLoggerModule class
void MetricsLoggerModule::LogMetricBluetoothLESession(
os::LEConnectionSessionOptions session_options) {
os::LogMetricBluetoothLEConnection(session_options);
}
// Instance of Metrics Collector for LEConnectionMetricsRemoteDeviceImpl
LEConnectionMetricsRemoteDevice* MetricsCollector::le_connection_metrics_remote_device =
new LEConnectionMetricsRemoteDevice();
LEConnectionMetricsRemoteDevice* MetricsCollector::GetLEConnectionMetricsCollector() {
return MetricsCollector::le_connection_metrics_remote_device;
}
} // namespace metrics
} // namespace bluetooth
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