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303 | #include <kooling/api/api.h>
#include <kooling/component/sensor/interface.h>
#include <kooling/database/database.h>
#include <kooling/datamodel/motion-type.h>
#include <kooling/datamodel/platform.h>
#include <kooling/datamodel/sensor.h>
#include <kooling/datamodel/speed.h>
#include <kooling/datamodel/user.h>
#include <kooling/json/json.h>
#include <kooling/system/sleep.h>
#include <kooling/system/workpool.h>
#include <plog/Log.h>
#include <chrono>
#include <cstddef>
#include <deque>
#include <future>
#include <sstream>
using namespace std::chrono_literals;
namespace kooling::component::sensor {
class database : public interface
{
struct ctor_tag {};
public:
explicit database(ctor_tag, const json_t&);
~database() override = default;
static interface::pointer_type create(const json_t& config)
{
return std::make_unique<database>(ctor_tag{}, config);
}
static std::string name()
{
return "database";
}
void run() override;
void stop() override;
private:
using duration_t = kooling::datamodel::timestamp::duration;
using fingerprint_t = kooling::datamodel::fingerprint;
using platform_t = kooling::datamodel::platform;
using sensor_data_point_t = kooling::datamodel::sensor_data_point;
using sensor_data_t = kooling::datamodel::sensor_data;
using speed_t = kooling::datamodel::speed;
using timestamp_t = kooling::datamodel::timestamp;
using user_t = kooling::datamodel::user;
std::optional<int> fetch_server_id();
std::deque<user_t> fetch_users(int server_id) const;
void handle_user(user_t) const;
interface::per_device_t fetch_sensor_data(const user_t&) const;
private:
struct server_conf
{
std::string host;
std::string token;
NLOHMANN_DEFINE_TYPE_INTRUSIVE(server_conf, host, token);
};
kooling::system::sleep d_sleep;
const std::string d_instance;
kooling::system::workpool d_workpool;
const std::chrono::seconds d_seconds_between_batches;
const server_conf d_server;
const kooling::database::config d_prod_db_config;
const kooling::database::config d_sensor_db_config;
};
static bool registered{ factory().register_component<database>() };
database::database(ctor_tag, const json_t& config)
: d_instance{ config["instance"] }
, d_workpool{ config["parallelism"] }
, d_seconds_between_batches{ config["seconds_between_batches"] }
, d_server{ config["server"].get<server_conf>() }
, d_prod_db_config{ config["prod_database"].get<kooling::database::config>() }
, d_sensor_db_config{ config["sensor_database"].get<kooling::database::config>() }
{}
std::optional<int> database::fetch_server_id()
{
const kooling::api::api api{ d_server.host, d_server.token };
constexpr const char *base_error_msg{ "Could not fetch server id: " };
constexpr int max_attemps{ 10 };
for (int attempt = 1; attempt != max_attemps; ++attempt)
{
if (const auto server_id{ api.get_server_id(d_instance) }; server_id)
{
PLOG_DEBUG << "Got server id: " << *server_id;
return server_id;
}
PLOG_WARNING
<< base_error_msg
<< "tried " << attempt << " out of " << max_attemps << " times, "
<< "trying again in 1 minute";
if (d_sleep(1min))
{
break;
}
}
PLOG_ERROR << base_error_msg << "bailing out";
return {};
}
auto database::fetch_users(int server_id) const -> std::deque<user_t>
{
std::deque<user_t> users;
const auto add_user{
[&users](std::string user,
int platform,
std::string vehicle_type,
std::string company_id,
int review)
{
users.push_back(
{ std::move(user)
, platform_t::_from_integral(platform)
, std::move(vehicle_type)
, std::move(company_id)
, review == 1 });
} };
kooling::database::database db{ d_prod_db_config };
const auto make_query = [&db, server_id](std::string_view table, platform_t platform)
{
// TODO - filter by lastdataprocessed bigger than something?
std::stringstream ss;
ss
<< "SELECT sa.userid, " << static_cast<int>(platform._to_integral()) << ", "
<< "COALESCE(acc.vehicletype, ''), "
<< "COALESCE(acc.companyid, ''), "
<< "acc.koolingreview "
<< "FROM " << db.quote_table(table) << " sa, accounts acc "
<< "WHERE sa.serverid = " << server_id << " "
<< "AND sa.userid = acc.userid "
<< "AND (sa.lastdataprocessed IS NULL OR sa.lastdatareceived > sa.lastdataprocessed)";
return ss.str();
};
std::string query{
make_query("serverassignments", platform_t::android)
+ " UNION "
+ make_query("serverassignments2", platform_t::ios) };
if (db.query(query, add_user))
{
PLOG_DEBUG << "Got " << users.size() << " users";
}
else
{
PLOG_ERROR << "Error fetching users";
}
return users;
}
void database::handle_user(user_t user) const<--- Function parameter 'user' should be passed by const reference.
{
if (d_sleep.stopped())
{
return;
}
std::stringstream log;
log << "handling "
<< "user: '" << user.user_id << "', "
<< "platform: '" << user.platform._to_string() << "', "
<< "company_id: '" << user.company_id << "', "
<< "vehicle_type: '" << user.vehicle_type << "'";
PLOG_DEBUG << "Begin " << log.str();
dispatch(user, fetch_sensor_data(user));
PLOG_DEBUG << "End " << log.str();
}
interface::per_device_t database::fetch_sensor_data(const user_t& user) const
{
kooling::database::database db{ d_sensor_db_config };
const std::string_view table_name{
user.platform == +platform_t::android
? "koolingdata"
: "koolingdata2" };
std::stringstream ss;
ss
<< "SELECT "
" sens.timestamp, "
" sens.motiontype, "
" sens.latitude, "
" sens.longitude, "
" sens.speed, "
" COALESCE(sens.steps, 0), "
" COALESCE(sens.accuracy, -1), "
" COALESCE(sens.bluetooth, '[]'), "
" phon.manufacturer, "
" phon.model, "
" phon.osversion "
"FROM " << db.quote_table(table_name) << " sens, phoneconfiguration phon "
"WHERE sens.userid = $1 "
" AND sens.motiontype IS NOT NULL "
" AND sens.latitude IS NOT NULL "
" AND sens.longitude IS NOT NULL "
" AND sens.deleted = 0 "
" AND sens.phoneconfigurationid = phon.id "
"ORDER BY timestamp ASC";
interface::ingester ingester;
if (db.query(ss.str(), kooling::database::params{ user.user_id }, ingester))
{
auto data{ ingester.data() };
for (const auto& [fingerprint, sensor_data] : data)
{
PLOG_DEBUG
<< "Retrieved user: '" << user.user_id << "', "
"configuration: " << fingerprint << ", "
"dps: " << sensor_data.size();
}
return data;
}
PLOG_ERROR
<< "Error fetching sensor data for user: '" << user.user_id << "'";
return {};
}
void database::run()
{
const auto server_id{ fetch_server_id() };
if (!server_id)
{
return ;
}
while (true)
{
const auto users{ fetch_users(*server_id) };
if (users.empty())
{
PLOG_DEBUG
<< "Nothing to do, waiting for "
<< d_seconds_between_batches.count()
<< " seconds until next run";
if (d_sleep(d_seconds_between_batches))
{
PLOG_DEBUG << "Handling stop request";
break;
}
continue;
}
std::vector<std::future<void>> futures;
futures.reserve(users.size());
PLOG_DEBUG << "Posting batch";
for (auto user : users)
{
futures.push_back(<--- Consider using std::transform algorithm instead of a raw loop.
d_workpool.post(
[this, user = std::move(user)]()
{
this->handle_user(std::move(user));
}));
}
PLOG_DEBUG << "Waiting for all threads to complete";
for (auto& f : futures)
{
f.wait();
}
PLOG_DEBUG
<< "Batch completed, waiting for "
<< d_seconds_between_batches.count()
<< " seconds until next one";
if (d_sleep(d_seconds_between_batches))
{
PLOG_DEBUG << "Handling stop request";
break;
}
}
}
void database::stop()
{
PLOG_DEBUG << "Stop requested";
d_sleep.stop();
}
} // namespace kooling::component::sensor
|