make it work

Reduce code duplication in db.cpp, use builtin formatting in spdlog when logging, remove unnecessary usages of empty C-strings
refactor tracker report functionality
2026-11-07 17:39:02 -10:00 · 2024-03-28 23:49:24 +01:00 · 2024-03-24 12:25:08 +01:00 · 2024-03-10 21:13:13 +01:00 · 2024-03-10 21:12:45 +01:00
24 changed files with 1367 additions and 769 deletions
@@ -1,3 +1,28 @@
+-- 2.1.4.(2024-03-24)
+FEATURES
+* Refactor the handling of SQL insert buffers
+BUILD
+* now requires libfmt, used for formatting strings
+
+-- 2.1.3 (2024-03-09)
+BREAKING
+* API user endpoint output changed to JSON
+FEATURES
+* Peak number of simultaneous open connections is now tracked.
+* Maximum size of client http request is now tracked.
+* Number of errors (bad tracker secrets, bad client requests) is now tracked.
+* Show jemalloc stats in Gazelle and Grafana report endpoints.
+BUILD
+* refactor report functions to produce only report payload
+
+-- 2.1.2 (2024-02-17)
+FEATURES
+* show resource usage in Gazelle and Grafana report endpoints
+
+-- 2.1.1 (2024-02-15)
+BUILD
+* Detabbed source code in first step towards having the code lint cleanly, no code changes
+
 -- 2.1.0 (2024-02-11)
 FEATURES
 * announce jitter is now a uniform distribution and can be modified on the fly
@@ -49,6 +49,9 @@ find_package(MYSQLPP REQUIRED)
 find_package(LibEv REQUIRED)
 include_directories(${LIBEV_INCLUDE_DIR})

+find_package(fmt REQUIRED)
+message(STATUS "Found libfmt version ${fmt_VERSION}")
+
 include_directories(${CMAKE_SOURCE_DIR}/libs)

 file(GLOB HEADERS src/*.h)
@@ -60,6 +63,7 @@ SET(LINK_LIBRARIES
    ${Boost_SYSTEM_LIBRARY}
    ${Boost_IOSTREAMS_LIBRARY}
    ${LIBEV_LIBRARY}
+    ${LIBFMT_IBRARY}
    ${MYSQLPP_LIBRARY}
    Threads::Threads
 )
@@ -75,4 +79,5 @@ endif()
 target_link_libraries(
    ocelot
    ${LINK_LIBRARIES}
+    fmt::fmt
 )
@@ -10,6 +10,7 @@ RUN apt-get update \
        libboost-iostreams-dev \
        libboost-system-dev \
        libev-dev \
+        libfmt-dev \
        libjemalloc-dev \
        libmysql++-dev \
        netcat-traditional \
@@ -27,6 +28,7 @@ RUN cmake -Wno-dev -S /srv -B /srv/build \
        pkg-config \
    && apt-get autoremove -y \
    && apt-get clean -y \
+    && mkdir -p /tmp/ocelot \
    && mv /srv/build/ocelot /srv/ocelot \
    && mv /srv/ocelot.conf.dist /srv/ocelot.conf

@@ -8,6 +8,7 @@ It supports requests over TCP and can only track IPv4 peers.
 * [GCC/G++](http://gcc.gnu.org/) (11+ required; 11.4.0+ recommended)
 * [Boost](http://www.boost.org/) (1.74.0+ required)
 * [libev](http://software.schmorp.de/pkg/libev.html) (required)
+* [libfmt](https://github.com/fmtlib/fmt) (8.1+ required)
 * [MySQL++](http://tangentsoft.net/mysql++/) (3.2.0+ required)
 * [jemalloc](http://jemalloc.net/) (optional, but strongly recommended)
 * [TCMalloc](http://goog-perftools.sourceforge.net/doc/tcmalloc.html) (optional)
@@ -23,9 +24,10 @@ sudo apt-get install \
    libboost-iostreams-dev \
    libboost-system-dev \
    libev-dev \
+    libfmt-dev \
    libjemalloc-dev \
    libmysql++-dev \
-	netcat-traditional \
+    netcat-traditional \
    pkg-config
 cmake -Wno-dev . -B build 
 make -C build
@@ -42,7 +44,7 @@ docker run -v $(pwd)/ocelot.conf:/srv/ocelot.conf ocelot

 ### Standalone Installation

-* Prepare the build environment. (This must be re-executed when new source files are added).
+* Prepare the build environment. (This must be re-executed when new source files or libraries are added).

        cmake -Wno-dev . -B build

@@ -69,6 +71,10 @@ docker run -v $(pwd)/ocelot.conf:/srv/ocelot.conf ocelot
 * `-c <path/to/ocelot.conf>` - Path to config file. If unspecified, the current working directory is used.
 * `-v` - Print queue status every time a flush is initiated.

+You can run a test ocelot daemon alongside a production daemon by specifying
+a separate configuration file, and setting `readonly = true`. This will
+prevent the database peer tables from being reset.
+
 ### Signals

 * `SIGHUP` - Reload config
@@ -34,4 +34,9 @@ schedule_interval   = 3
 log                 = false
 log_path            = /tmp/ocelot

+# the report path should be placed on a tmpfs partition in production
+report_path         = /tmp/ocelot
+
+# set to true if prevent peer data from being zeroed out on startup
+# useful to test a new version alongside an instance running in production
 readonly            = false
@@ -47,7 +47,7 @@ void confval::set(const std::string &value) {
    if (val_type == CONF_BOOL) {
        bool_val = value == "1" || value == "true" || value == "yes";
    } else if (val_type == CONF_UINT) {
-        uint_val = strtoint32(value);
+        uint_val = atoi(value.c_str());
    } else if (val_type == CONF_STR) {
        str_val = value;
    }
@@ -100,6 +100,8 @@ void config::init() {
    add("log", false);
    add("log_path", "ocelot");  // path to where to write log + name of log (don't need to put file extension)

+    add("report_path", "/tmp");  // path for transfer to website (should be a tmpfs in production)
+
    // Debugging
    add("readonly", false);
 }
@@ -107,7 +109,7 @@ void config::init() {
 confval * config::get(const std::string &setting_name) {
    const auto setting = settings.find(setting_name);
    if (setting == settings.end()) {
-        spdlog::get("logger")->info("WARNING: Unrecognized setting '" + setting_name + "'");
+        spdlog::get("logger")->info("WARNING: Unrecognized setting '{}'", setting_name);
        return dummy_setting;
    }
    return &setting->second;
@@ -150,7 +152,7 @@ void config::reload() {
    const std::string conf_file_path(get_str("conf_file_path"));
    std::ifstream conf_file(conf_file_path);
    if (conf_file.fail()) {
-        spdlog::get("logger")->error("Config file '" + conf_file_path + "' couldn't be opened");
+        spdlog::get("logger")->error("Config file '{}' couldn't be opened", conf_file_path);
    } else {
        init();
        load(conf_file);
@@ -21,7 +21,7 @@ class confval {
    confval();
    confval(bool value);
    confval(uint32_t value);
-    confval(const char * value);
+    confval(const char *value);
    uint32_t get_uint();
    bool get_bool();
    std::string get_str();
@@ -21,7 +21,11 @@

 #define DB_LOCK_TIMEOUT 50

-mysql::mysql(config * conf) : u_active(false), t_active(false), p_active(false), s_active(false), tok_active(false) {
+mysql::mysql(config * conf) :
+        update_heavy_peer_buffer(*this), update_light_peer_buffer(*this),
+        update_snatch_buffer(*this), update_token_buffer(*this),
+        update_torrent_buffer(*this), update_user_buffer(*this),
+        peer_flush_active(false), snatch_flush_active(false), token_flush_active(false), torrent_flush_active(false), user_flush_active(false) {
    logger = spdlog::get("logger");
    load_config(conf);
    if (mysql_db.empty()) {
@@ -34,7 +38,7 @@ mysql::mysql(config * conf) : u_active(false), t_active(false), p_active(false),
        conn.set_option(&reconnect);
        conn.connect(mysql_db.c_str(), mysql_host.c_str(), mysql_username.c_str(), mysql_password.c_str(), mysql_port);
    } catch (const mysqlpp::Exception &er) {
-        logger->error("Failed to connect to MySQL (" + std::string(er.what()) + ")");
+        logger->error("Failed to connect to MySQL ({})", er.what());
        return;
    }

@@ -69,6 +73,12 @@ mysqlpp::Connection mysql::create_connection() {
    return c;
 }

+std::string mysql::quote(std::string value) {
+    mysqlpp::Query query = conn.query();
+    query.escape_string(&value);
+    return '\'' + value + '\'';
+}
+
 void mysql::clear_peer_data() {
    try {
        mysqlpp::Query query = conn.query("TRUNCATE xbt_files_users;");
@@ -80,9 +90,9 @@ void mysql::clear_peer_data() {
            logger->error("Unable to reset seeder and leecher count!");
        }
    } catch (const mysqlpp::BadQuery &er) {
-        logger->error("Query error in clear_peer_data: " + std::string(er.what()));
+        logger->error("Query error in clear_peer_data: {}", er.what());
    } catch (const mysqlpp::Exception &er) {
-        logger->error("Query error in clear_peer_data: " + std::string(er.what()));
+        logger->error("Query error in clear_peer_data: {}", er.what());
    }
 }

@@ -147,15 +157,19 @@ void mysql::load_torrents(torrent_list &torrents) {
            }
        }
    } catch (const mysqlpp::BadQuery &er) {
-        logger->error("Query error in load_torrents: " + std::string(er.what()));
+        logger->error("Query error in load_torrents: {}", er.what());
        return;
    }
-    logger->info("Loaded " + std::to_string(torrents.size()) + " torrents");
+    logger->info("Loaded {} torrents", torrents.size());
    load_tokens(torrents);
 }

 void mysql::load_users(user_list &users) {
-    mysqlpp::Query query = conn.query("SELECT ID, can_leech, torrent_pass, (Visible='0' OR IP='127.0.0.1') AS Protected FROM users_main WHERE Enabled='1';");
+    std::string sql(
+        "SELECT ID, can_leech, torrent_pass, (Visible='0' OR IP='127.0.0.1') AS Protected"
+        " FROM users_main WHERE Enabled='1'"
+    );
+    mysqlpp::Query query = conn.query(sql);
    try {
        mysqlpp::StoreQueryResult res = query.store();
        size_t num_rows = res.num_rows();
@@ -192,14 +206,18 @@ void mysql::load_users(user_list &users) {
            }
        }
    } catch (const mysqlpp::BadQuery &er) {
-        logger->error("Query error in load_users: " + std::string(er.what()));
+        logger->error("Query error in load_users: {} [{}]", er.what(), sql);
        return;
    }
-    logger->info("Loaded " + std::to_string(users.size()) + " users");
+    logger->info("Loaded {} users", users.size());
 }

 void mysql::load_tokens(torrent_list &torrents) {
-    mysqlpp::Query query = conn.query("SELECT uf.UserID, t.info_hash FROM users_freeleeches AS uf INNER JOIN torrents AS t ON t.ID = uf.TorrentID WHERE uf.Expired = '0';");
+    std::string sql(
+        "SELECT uf.UserID, t.info_hash FROM users_freeleeches AS uf "
+        "INNER JOIN torrents AS t ON t.ID = uf.TorrentID WHERE uf.Expired = '0'"
+    );
+    mysqlpp::Query query = conn.query(sql);
    int token_count = 0;
    try {
        mysqlpp::StoreQueryResult res = query.store();
@@ -216,15 +234,16 @@ void mysql::load_tokens(torrent_list &torrents) {
            }
        }
    } catch (const mysqlpp::BadQuery &er) {
-        logger->error("Query error in load_tokens: " + std::string(er.what()));
+        logger->error("Query error in load_tokens: {} [{}]", er.what(), sql);
        return;
    }
-    logger->info("Loaded " + std::to_string(token_count) + " tokens");
+    logger->info("Loaded {} tokens", token_count);
 }


 void mysql::load_whitelist(std::vector<std::string> &whitelist) {
-    mysqlpp::Query query = conn.query("SELECT peer_id FROM xbt_client_whitelist;");
+    std::string sql("SELECT peer_id FROM xbt_client_whitelist");
+    mysqlpp::Query query = conn.query(sql);
    try {
        mysqlpp::StoreQueryResult res = query.store();
        size_t num_rows = res.num_rows();
@@ -236,64 +255,40 @@ void mysql::load_whitelist(std::vector<std::string> &whitelist) {
            whitelist.push_back(peer_id);
        }
    } catch (const mysqlpp::BadQuery &er) {
-        logger->error("Query error in load_whitelist: " + std::string(er.what()));
+        logger->error("Query error in load_whitelist: {} [{}]", er.what(), sql);
        return;
    }
-    if (whitelist.size() == 0) {
-        logger->info("Assuming no whitelist desired, disabling");
-    } else {
-        logger->info("Loaded " + std::to_string(whitelist.size()) + " clients into the whitelist");
-    }
+    logger->info("Loaded {} clients into the whitelist", whitelist.size());
+}
+
+void mysql::record_peer(const std::string &record) {
+    std::lock_guard<std::mutex> buf_lock(peer_buffer_lock);
+    update_heavy_peer_buffer += record;
+}
+
+void mysql::record_peer_light(const std::string &record) {
+    std::lock_guard<std::mutex> buf_lock(peer_light_buffer_lock);
+    update_light_peer_buffer += record;
+}
+
+void mysql::record_snatch(const std::string &record) {
+    std::lock_guard<std::mutex> buf_lock(snatch_buffer_lock);
+    update_snatch_buffer += record;
 }

 void mysql::record_token(const std::string &record) {
-    if (!update_token_buffer.empty()) {
-        update_token_buffer += ",";
-    }
+    std::lock_guard<std::mutex> buf_lock(token_buffer_lock);
    update_token_buffer += record;
 }

-void mysql::record_user(const std::string &record) {
-    if (!update_user_buffer.empty()) {
-        update_user_buffer += ",";
-    }
-    update_user_buffer += record;
-}
-
 void mysql::record_torrent(const std::string &record) {
-    std::lock_guard<std::mutex> tb_lock(torrent_buffer_lock);
-    if (!update_torrent_buffer.empty()) {
-        update_torrent_buffer += ",";
-    }
+    std::lock_guard<std::mutex> buf_lock(torrent_buffer_lock);
    update_torrent_buffer += record;
 }

-void mysql::record_peer(const std::string &record, const std::string &ip, const std::string &peer_id, const std::string &useragent) {
-    if (!update_heavy_peer_buffer.empty()) {
-        update_heavy_peer_buffer += ",";
-    }
-    mysqlpp::Query q = conn.query();
-    q << record << mysqlpp::quote << ip << ',' << mysqlpp::quote << peer_id << ',' << mysqlpp::quote << useragent << "," << time(NULL) << ')';
-
-    update_heavy_peer_buffer += q.str();
-}
-void mysql::record_peer(const std::string &record, const std::string &peer_id) {
-    if (!update_light_peer_buffer.empty()) {
-        update_light_peer_buffer += ",";
-    }
-    mysqlpp::Query q = conn.query();
-    q << record << mysqlpp::quote << peer_id << ',' << time(NULL) << ')';
-
-    update_light_peer_buffer += q.str();
-}
-
-void mysql::record_snatch(const std::string &record, const std::string &ip) {
-    if (!update_snatch_buffer.empty()) {
-        update_snatch_buffer += ",";
-    }
-    mysqlpp::Query q = conn.query();
-    q << record << ',' << mysqlpp::quote << ip << ')';
-    update_snatch_buffer += q.str();
+void mysql::record_user(const std::string &record) {
+    std::lock_guard<std::mutex> buf_lock(user_buffer_lock);
+    update_user_buffer += record;
 }

 bool mysql::all_clear() {
@@ -308,350 +303,289 @@ void mysql::flush() {
    flush_tokens();
 }

-void mysql::flush_users() {
-    if (readonly) {
-        update_user_buffer.clear();
-        return;
-    }
-    std::string sql;
-    std::lock_guard<std::mutex> uq_lock(user_queue_lock);
-    size_t qsize = user_queue.size();
-    if (verbose_flush || qsize > 0) {
-        logger->info("User flush queue size: " + std::to_string(qsize) + ", next query length: " + std::to_string(user_queue.front().size()));
-    }
-    if (update_user_buffer.empty()) {
-        return;
-    }
-    sql = "INSERT INTO users_leech_stats (UserID, Uploaded, Downloaded) VALUES " + update_user_buffer +
-        " ON DUPLICATE KEY UPDATE Uploaded = Uploaded + VALUES(Uploaded), Downloaded = Downloaded + VALUES(Downloaded)";
-    user_queue.push(sql);
-    update_user_buffer.clear();
-    stats.user_queue_size = qsize + 1;
-    if (!u_active) {
-        std::thread thread(&mysql::do_flush_users, this);
-        thread.detach();
-    }
-}
-
-void mysql::flush_torrents() {
-    std::lock_guard<std::mutex> tb_lock(torrent_buffer_lock);
-    if (readonly) {
-        update_torrent_buffer.clear();
-        return;
-    }
-    std::string sql;
-    std::lock_guard<std::mutex> tq_lock(torrent_queue_lock);
-    size_t qsize = torrent_queue.size();
-    if (verbose_flush || qsize > 0) {
-        logger->info("Torrent flush queue size: " + std::to_string(qsize) + ", next query length: " + std::to_string(torrent_queue.front().size()));
-    }
-    if (update_torrent_buffer.empty()) {
-        return;
-    }
-    sql = "INSERT INTO torrents_leech_stats (TorrentID,Seeders,Leechers,Snatched,Balance) VALUES " + update_torrent_buffer +
-        " ON DUPLICATE KEY UPDATE Seeders=VALUES(Seeders), Leechers=VALUES(Leechers), " +
-        "Snatched=Snatched+VALUES(Snatched), Balance=VALUES(Balance), last_action = " +
-        "IF(VALUES(Seeders) > 0, NOW(), last_action)";
-    torrent_queue.push(sql);
-    update_torrent_buffer.clear();
-    sql.clear();
-    sql = "DELETE FROM torrents WHERE info_hash = ''";
-    torrent_queue.push(sql);
-    stats.torrent_queue_size = qsize + 2;
-    if (!t_active) {
-        std::thread thread(&mysql::do_flush_torrents, this);
-        thread.detach();
-    }
-}
-
-void mysql::flush_snatches() {
-    if (readonly) {
-        update_snatch_buffer.clear();
-        return;
-    }
-    std::string sql;
-    std::lock_guard<std::mutex> sq_lock(snatch_queue_lock);
-    size_t qsize = snatch_queue.size();
-    if (verbose_flush || qsize > 0) {
-        logger->info("Snatch flush queue size: " + std::to_string(qsize) + ", next query length: " + std::to_string(snatch_queue.front().size()));
-    }
-    if (update_snatch_buffer.empty()) {
-        return;
-    }
-    sql = "INSERT IGNORE INTO xbt_snatched (uid, fid, tstamp, IP) VALUES " + update_snatch_buffer;
-    snatch_queue.push(sql);
-    update_snatch_buffer.clear();
-    stats.snatch_queue_size = qsize + 1;
-    if (!s_active) {
-        std::thread thread(&mysql::do_flush_snatches, this);
-        thread.detach();
-    }
-}
-
 void mysql::flush_peers() {
+    std::unique_lock<std::mutex> q_lock(peer_queue_lock);
+    size_t qsize = peer_queue.size();
+    if (verbose_flush || qsize > 0) {
+        logger->info("Peer flush queue size: {}, next query length: {}", qsize, peer_queue.front().size());
+    }
+    q_lock.unlock();
+
+    std::unique_lock<std::mutex> buf_lock(peer_buffer_lock);
+    std::unique_lock<std::mutex> buf_light_lock(peer_light_buffer_lock);
    if (readonly) {
        update_light_peer_buffer.clear();
        update_heavy_peer_buffer.clear();
        return;
    }
-    std::string sql;
-    std::lock_guard<std::mutex> pq_lock(peer_queue_lock);
-    size_t qsize = peer_queue.size();
-    short qsize_added = 0;
-    if (verbose_flush || qsize > 0) {
-        logger->info("Peer flush queue size: " + std::to_string(qsize) + ", next query length: " + std::to_string(peer_queue.front().size()));
-    }
-
-    // Nothing to do
-    if (update_light_peer_buffer.empty() && update_heavy_peer_buffer.empty()) {
+    /* The first step to update the database is to transform the tuples that
+     * have been stored into an SQL insert statement. The tuple buffer can then
+     * be cleared and the statement saved in a queue. The next step is to see
+     * if the queued statements can be sent to the database. If a database
+     * flush is already active then nothing else happens.
+     *
+     * Otherwise, a new thread is spun off to take the queued statements and
+     * execute them on the database in a FIFO manner. If for whatever reason
+     * the database cannot process the statement (bad credentials,
+     * incorrect/missing) the statements remain queued. If you are lucky, you
+     * can make the necessary changes in the database (alter a table, create
+     * the mysql user), and then the queue will empty.
+     */
+    if (update_light_peer_buffer.empty() && update_heavy_peer_buffer.empty() && qsize == 0) {
+        // the buffers are empty and nothing is queued
        return;
    }

+    int16_t qsize_added = 0;
    if (!update_heavy_peer_buffer.empty()) {
        // Because xfu inserts are slow and ram is not infinite we need to
        // limit this queue's size
        // xfu will be messed up if the light query inserts a new row,
        // but that's better than an oom crash
        if (qsize >= 1000) {
+            std::lock_guard<std::mutex> q_lock(peer_queue_lock);
            peer_queue.pop();
+            logger->error("Peer queue overflowed, update lost");
        } else {
            qsize_added += 1;
        }
-        sql = "INSERT INTO xbt_files_users (uid,fid,active,uploaded,downloaded,upspeed,downspeed,remaining,corrupt," +
-            std::string("timespent,announced,ip,peer_id,useragent,mtime) VALUES ") + update_heavy_peer_buffer +
-                    " ON DUPLICATE KEY UPDATE active=VALUES(active), uploaded=VALUES(uploaded), " +
-                    "downloaded=VALUES(downloaded), upspeed=VALUES(upspeed), " +
-                    "downspeed=VALUES(downspeed), remaining=VALUES(remaining), " +
-                    "corrupt=VALUES(corrupt), timespent=VALUES(timespent), " +
-                    "announced=VALUES(announced), mtime=VALUES(mtime)";
-        peer_queue.push(sql);
+        std::lock_guard<std::mutex> q_lock(peer_queue_lock);
+        peer_queue.push(fmt::format(
+            "INSERT INTO xbt_files_users"
+            "(uid,fid,active,uploaded,downloaded,upspeed,downspeed,remaining"
+            ",corrupt,timespent,announced,ip,peer_id,useragent,mtime)"
+            "VALUES {} ON DUPLICATE KEY UPDATE active=VALUES(active)"
+            ",uploaded=VALUES(uploaded),downloaded=VALUES(downloaded)"
+            ",upspeed=VALUES(upspeed),downspeed=VALUES(downspeed)"
+            ",remaining=VALUES(remaining),corrupt=VALUES(corrupt)"
+            ",timespent=VALUES(timespent),announced=VALUES(announced)"
+            ",mtime=VALUES(mtime)",
+            update_heavy_peer_buffer.str()
+        ));
        update_heavy_peer_buffer.clear();
-        sql.clear();
    }
+    buf_lock.unlock();
+
    if (!update_light_peer_buffer.empty()) {
        // See comment above
        if (qsize >= 1000) {
+            std::lock_guard<std::mutex> q_lock(peer_queue_lock);
            peer_queue.pop();
+            logger->error("Peer queue overflowed, update lost");
        } else {
            qsize_added += 1;
        }
-        sql = "INSERT INTO xbt_files_users (uid,fid,timespent,announced,peer_id,mtime) VALUES " +
-                    update_light_peer_buffer +
-                    " ON DUPLICATE KEY UPDATE upspeed=0, downspeed=0, timespent=VALUES(timespent), " +
-                    "announced=VALUES(announced), mtime=VALUES(mtime)";
-        peer_queue.push(sql);
+        std::lock_guard<std::mutex> q_lock(peer_queue_lock);
+        peer_queue.push(fmt::format(
+            "INSERT INTO xbt_files_users(uid,fid,timespent,announced,peer_id,mtime)"
+            "VALUES {}  ON DUPLICATE KEY UPDATE upspeed=0,downspeed=0"
+            ",timespent=VALUES(timespent),announced=VALUES(announced)"
+            ",mtime=VALUES(mtime)",
+            update_light_peer_buffer.str()
+        ));
        update_light_peer_buffer.clear();
-        sql.clear();
    }
+    buf_light_lock.unlock();
    stats.peer_queue_size = qsize + qsize_added;

-    if (!p_active) {
-        std::thread thread(&mysql::do_flush_peers, this);
+    if (!peer_flush_active) {
+        std::thread thread([this]() {
+            do_flush("peer", peer_queue, peer_queue_lock, peer_flush_active, stats.peer_queue_size);
+        });
+        thread.detach();
+    }
+}
+
+void mysql::flush_snatches() {
+    std::unique_lock<std::mutex> q_lock(snatch_queue_lock);
+    size_t qsize = snatch_queue.size();
+    if (verbose_flush || qsize > 0) {
+        logger->info("Snatch flush queue size: {}, next query length: {}", qsize, snatch_queue.front().size());
+    }
+    q_lock.unlock();
+
+    std::unique_lock<std::mutex> buf_lock(snatch_buffer_lock);
+    if (readonly) {
+        update_snatch_buffer.clear();
+        return;
+    }
+    if (update_snatch_buffer.empty() && qsize == 0) {
+        return;
+    }
+    if (!update_snatch_buffer.empty()) {
+        std::lock_guard<std::mutex> q_lock(snatch_queue_lock);
+        snatch_queue.push(fmt::format(
+            "INSERT IGNORE INTO xbt_snatched (uid, fid, tstamp, IP) VALUES {}",
+            update_snatch_buffer.str()
+        ));
+        update_snatch_buffer.clear();
+        stats.snatch_queue_size = qsize + 1;
+    }
+    buf_lock.unlock();
+
+    if (!snatch_flush_active) {
+        std::thread thread([this]() {
+            do_flush("snatch", snatch_queue, snatch_queue_lock, snatch_flush_active, stats.snatch_queue_size);
+        });
        thread.detach();
    }
 }

 void mysql::flush_tokens() {
+    std::unique_lock<std::mutex> q_lock(token_queue_lock);
+    size_t qsize = token_queue.size();
+    if (verbose_flush || qsize > 0) {
+        logger->info("Token flush queue size: {}, next query length: {}", qsize, token_queue.front().size());
+    }
+    q_lock.unlock();
+
+    std::unique_lock<std::mutex> buf_lock(token_buffer_lock);
    if (readonly) {
        update_token_buffer.clear();
        return;
    }
-    std::string sql;
-    std::lock_guard<std::mutex> tq_lock(token_queue_lock);
-    size_t qsize = token_queue.size();
-    if (verbose_flush || qsize > 0) {
-        logger->info("Token flush queue size: " + std::to_string(qsize) + ", next query length: " + std::to_string(token_queue.front().size()));
-    }
-    if (update_token_buffer.empty()) {
+    if (update_token_buffer.empty() && qsize == 0) {
        return;
    }
-    sql = "INSERT INTO users_freeleeches (UserID, TorrentID, Downloaded) VALUES " + update_token_buffer +
-        " ON DUPLICATE KEY UPDATE Downloaded = Downloaded + VALUES(Downloaded)";
-    token_queue.push(sql);
-    update_token_buffer.clear();
-    stats.token_queue_size = qsize + 1;
-    if (!tok_active) {
-        std::thread thread(&mysql::do_flush_tokens, this);
+    if (!update_token_buffer.empty()) {
+        std::lock_guard<std::mutex> q_lock(token_queue_lock);
+        token_queue.push(fmt::format(
+            "INSERT INTO users_freeleeches(UserID,TorrentID,Downloaded)VALUES"
+            "{} ON DUPLICATE KEY UPDATE Downloaded=Downloaded+VALUES(Downloaded)",
+            update_token_buffer.str()
+        ));
+        update_token_buffer.clear();
+        stats.token_queue_size = qsize + 1;
+    }
+    buf_lock.unlock();
+
+    if (!token_flush_active) {
+        std::thread thread([this]() {
+            do_flush("token", token_queue, token_queue_lock, token_flush_active, stats.token_queue_size);
+        });
        thread.detach();
    }
 }

-void mysql::do_flush_users() {
-    u_active = true;
-    try {
-        mysqlpp::Connection c = create_connection();
-        while (user_queue.size() > 0) {
-            try {
-                std::string sql = user_queue.front();
-                mysqlpp::Query query = c.query(sql);
-                if (!query.exec()) {
-                    logger->info("User flush failed (" + std::to_string(user_queue.size()) + " remain)");
-                    sleep(3);
-                    break;
-                } else {
-                    std::lock_guard<std::mutex> uq_lock(user_queue_lock);
-                    user_queue.pop();
-                    stats.user_queue_size -= 1;
-                }
-            }
-            catch (const mysqlpp::BadQuery &er) {
-                logger->error("Query error: " + std::string(er.what()) + " in flush users with a qlength: " + std::to_string(user_queue.front().size()) + " queue size: " + std::to_string(user_queue.size()));
-                std::this_thread::sleep_for(std::chrono::seconds(3));
-                break;
-            } catch (const mysqlpp::Exception &er) {
-                logger->error("Query error: " + std::string(er.what()) + " in flush users with a qlength: " + std::to_string(user_queue.front().size()) +  " queue size: " + std::to_string(user_queue.size()));
-                std::this_thread::sleep_for(std::chrono::seconds(3));
-                break;
-            }
-        }
+void mysql::flush_torrents() {
+    std::unique_lock<std::mutex> q_lock(torrent_queue_lock);
+    size_t qsize = torrent_queue.size();
+    if (verbose_flush || qsize > 0) {
+        logger->info("Torrent flush queue size: {}, next query length: {}", qsize, torrent_queue.front().size());
    }
-    catch (const mysqlpp::Exception &er) {
-        logger->error("MySQL error in flush_users: " + std::string(er.what()));
+    q_lock.unlock();
+
+    std::unique_lock<std::mutex> buf_lock(torrent_buffer_lock);
+    if (readonly) {
+        update_torrent_buffer.clear();
+        return;
+    }
+    if (update_torrent_buffer.empty() && qsize == 0) {
+        return;
+    }
+    if (!update_torrent_buffer.empty()) {
+        std::lock_guard<std::mutex> q_lock(torrent_queue_lock);
+        torrent_queue.push(fmt::format(
+            "INSERT INTO torrents_leech_stats"
+            "(TorrentID,Seeders,Leechers,Snatched,Balance)VALUES{}"
+            "ON DUPLICATE KEY UPDATE Seeders=VALUES(Seeders),Leechers=VALUES(Leechers)"
+            ",Snatched=Snatched+VALUES(Snatched),Balance=VALUES(Balance)"
+            ",last_action=IF(VALUES(Seeders)>0,now(),last_action)",
+            update_torrent_buffer.str()
+        ));
+        update_torrent_buffer.clear();
+    }
+    buf_lock.unlock();
+
+    stats.torrent_queue_size = qsize + 1;
+    if (!torrent_flush_active) {
+        std::thread thread([this]() {
+            do_flush("torrent", torrent_queue, torrent_queue_lock, torrent_flush_active, stats.torrent_queue_size);
+        });
+        thread.detach();
    }
-    u_active = false;
 }

-void mysql::do_flush_torrents() {
-    t_active = true;
-    try {
-        mysqlpp::Connection c = create_connection();
-        while (torrent_queue.size() > 0) {
-            try {
-                std::string sql = torrent_queue.front();
-                if (sql.empty()) {
-                    torrent_queue.pop();
-                    stats.torrent_queue_size -= 1;
-                    continue;
-                }
-                mysqlpp::Query query = c.query(sql);
-                if (!query.exec()) {
-                    logger->info("Torrent flush failed (" + std::to_string(torrent_queue.size()) + " remain)");
-                    std::this_thread::sleep_for(std::chrono::seconds(3));
-                    break;
-                } else {
-                    std::lock_guard<std::mutex> tq_lock(torrent_queue_lock);
-                    torrent_queue.pop();
-                    stats.torrent_queue_size -= 1;
-                }
-            }
-            catch (const mysqlpp::BadQuery &er) {
-                logger->error("Query error: " + std::string(er.what()) + " in flush torrents with a qlength: " + std::to_string(torrent_queue.front().size()) + " queue size: " + std::to_string(torrent_queue.size()));
-                std::this_thread::sleep_for(std::chrono::seconds(3));
-                break;
-            } catch (const mysqlpp::Exception &er) {
-                logger->error("Query error: " + std::string(er.what()) + " in flush torrents with a qlength: " + std::to_string(torrent_queue.front().size()) + " queue size: " + std::to_string(torrent_queue.size()));
-                std::this_thread::sleep_for(std::chrono::seconds(3));
-                break;
-            }
-        }
+void mysql::flush_users() {
+    std::unique_lock<std::mutex> q_lock(user_queue_lock);
+    size_t qsize = user_queue.size();
+    if (verbose_flush || qsize > 0) {
+        logger->info("User flush queue size: {}, next query length: {}", qsize, user_queue.front().size());
    }
-    catch (const mysqlpp::Exception &er) {
-        logger->error("MySQL error in flush_torrents: " + std::string(er.what()));
+    q_lock.unlock();
+
+    std::unique_lock<std::mutex> buf_lock(user_buffer_lock);
+    if (readonly) {
+        update_user_buffer.clear();
+        return;
+    }
+    if (update_user_buffer.empty() && qsize == 0) {
+        return;
+    }
+    if (!update_user_buffer.empty()) {
+        std::lock_guard<std::mutex> q_lock(user_queue_lock);
+        user_queue.push(fmt::format(
+            "INSERT INTO users_leech_stats(UserID,Uploaded,Downloaded)VALUES{}"
+            "ON DUPLICATE KEY UPDATE Uploaded=Uploaded+VALUES(Uploaded)"
+            ",Downloaded=Downloaded+VALUES(Downloaded)",
+            update_user_buffer.str()
+        ));
+        update_user_buffer.clear();
+        stats.user_queue_size = qsize + 1;
+    }
+    buf_lock.unlock();
+
+    if (!user_flush_active) {
+        std::thread thread([this]() {
+            do_flush("user", user_queue, user_queue_lock, user_flush_active, stats.user_queue_size);
+        });
+        thread.detach();
    }
-    t_active = false;
 }

-void mysql::do_flush_peers() {
-    p_active = true;
+void mysql::do_flush(const char *name, std::queue<std::string> &queue, std::mutex &mtx, bool &active, std::atomic<uint32_t>& counter) {
+    active = true;
    try {
-        mysqlpp::Connection c = create_connection();
-        while (peer_queue.size() > 0) {
-            try {
-                std::string sql = peer_queue.front();
-                mysqlpp::Query query = c.query(sql);
-                if (!query.exec()) {
-                    logger->info("Peer flush failed (" + std::to_string(peer_queue.size()) + " remain)");
-                    std::this_thread::sleep_for(std::chrono::seconds(3));
-                    break;
-                } else {
-                    std::lock_guard<std::mutex> pq_lock(peer_queue_lock);
-                    peer_queue.pop();
-                    stats.peer_queue_size -= 1;
-                }
-            }
-            catch (const mysqlpp::BadQuery &er) {
-                logger->error("Query error: " + std::string(er.what()) + " in flush peers with a qlength: " + std::to_string(peer_queue.front().size()) + " queue size: " + std::to_string(peer_queue.size()));
-                std::this_thread::sleep_for(std::chrono::seconds(3));
-                break;
-            } catch (const mysqlpp::Exception &er) {
-                logger->error("Query error: " + std::string(er.what()) + " in flush peers with a qlength: " + std::to_string(peer_queue.front().size()) + " queue size: " + std::to_string(peer_queue.size()));
-                std::this_thread::sleep_for(std::chrono::seconds(3));
-                break;
-            }
-        }
-    }
-    catch (const mysqlpp::Exception &er) {
-        logger->error("MySQL error in flush_peers: " + std::string(er.what()));
-    }
-    p_active = false;
-}
+        std::unique_lock<std::mutex> q_lock(mtx);
+        size_t q_size = queue.size();
+        q_lock.unlock();

-void mysql::do_flush_snatches() {
-    s_active = true;
-    try {
        mysqlpp::Connection c = create_connection();
-        while (snatch_queue.size() > 0) {
+        std::string sql;
+        while (q_size > 0) {
            try {
-                std::string sql = snatch_queue.front();
+                std::unique_lock<std::mutex> q_lock(mtx);
+                sql = queue.front();
+                q_lock.unlock();
                mysqlpp::Query query = c.query(sql);
                if (!query.exec()) {
-                    logger->info("Snatch flush failed (" + std::to_string(snatch_queue.size()) + " remain)");
+                    logger->info("{} flush failed ({} remain)", name, q_size);
                    std::this_thread::sleep_for(std::chrono::seconds(3));
                    break;
-                } else {
-                    std::lock_guard<std::mutex> sq_lock(snatch_queue_lock);
-                    snatch_queue.pop();
-                    stats.snatch_queue_size -= 1;
                }
+                q_lock.lock();
+                queue.pop();
+                q_size = queue.size();
+                q_lock.unlock();
+                counter -= 1;
            }
            catch (const mysqlpp::BadQuery &er) {
-                logger->error("Query error: " + std::string(er.what()) + " in flush snatches with a qlength: " + std::to_string(snatch_queue.front().size()) + " queue size: " + std::to_string(snatch_queue.size()));
+                logger->error("SQL error: {} in {} flush with a qlength: {} queue size: {} sql=[{}]",
+                    er.what(), name, queue.front().size(), q_size, sql
+                );
                std::this_thread::sleep_for(std::chrono::seconds(3));
                break;
            } catch (const mysqlpp::Exception &er) {
-                logger->error("Query error: " + std::string(er.what()) + " in flush snatches with a qlength: " + std::to_string(snatch_queue.front().size()) + " queue size: " + std::to_string(snatch_queue.size()));
+                logger->error("DB error: {} in {} flush with a qlength: {} queue size: {}",
+                    er.what(), name, queue.front().size(), q_size
+                );
                std::this_thread::sleep_for(std::chrono::seconds(3));
                break;
            }
        }
    }
    catch (const mysqlpp::Exception &er) {
-        logger->error("MySQL error in flush_snatches: " + std::string(er.what()));
+        logger->error("General DB error in {} flush: {}", name, er.what());
    }
-    s_active = false;
-}
-
-void mysql::do_flush_tokens() {
-    tok_active = true;
-    try {
-        mysqlpp::Connection c = create_connection();
-        while (token_queue.size() > 0) {
-            try {
-                std::string sql = token_queue.front();
-                mysqlpp::Query query = c.query(sql);
-                if (!query.exec()) {
-                    logger->info("Token flush failed (" + std::to_string(token_queue.size()) + " remain)");
-                    std::this_thread::sleep_for(std::chrono::seconds(3));
-                    break;
-                } else {
-                    std::lock_guard<std::mutex> tq_lock(token_queue_lock);
-                    token_queue.pop();
-                    stats.token_queue_size -= 1;
-                }
-            }
-            catch (const mysqlpp::BadQuery &er) {
-                logger->error("Query error: " + std::string(er.what()) + " in flush tokens with a qlength: " + std::to_string(token_queue.front().size()) + " queue size: " + std::to_string(token_queue.size()));
-                std::this_thread::sleep_for(std::chrono::seconds(3));
-                break;
-            } catch (const mysqlpp::Exception &er) {
-                logger->error("Query error: " + std::string(er.what()) + " in flush tokens with a qlength: " + std::to_string(token_queue.front().size()) + " queue size: " + std::to_string(token_queue.size()));
-                std::this_thread::sleep_for(std::chrono::seconds(3));
-                break;
-            }
-        }
-    }
-    catch (const mysqlpp::Exception &er) {
-        logger->error("MySQL error in flush_tokens: " + std::string(er.what()));
-    }
-    tok_active = false;
+    active = false;
 }
@@ -16,13 +16,44 @@

 class mysql {
 private:
+
+    class query_buffer {
+        std::string buf;
+        const mysql &db;
+      public:
+        /* pre-extend the buffer to avoid repeated reallocs,
+         * the peer queue can easily reach 500Kb
+         */
+        query_buffer(const mysql& db_):db(db_) { buf.reserve(57320); }
+        query_buffer& operator+=(const std::string& chars) {
+            if (!db.readonly) {
+                if (!buf.empty()) {
+                    buf += ',';
+                }
+                buf += chars;
+            }
+            return *this;
+        }
+        void clear() { buf.clear(); buf.reserve(57320); }
+        bool empty() const { return buf.empty(); }
+        const std::string& str() const { return buf; }
+    };
+    friend class query_buffer;
+
    mysqlpp::Connection conn;
-    std::string update_user_buffer;
-    std::string update_torrent_buffer;
-    std::string update_heavy_peer_buffer;
-    std::string update_light_peer_buffer;
-    std::string update_snatch_buffer;
-    std::string update_token_buffer;
+    query_buffer update_heavy_peer_buffer;
+    query_buffer update_light_peer_buffer;
+    query_buffer update_snatch_buffer;
+    query_buffer update_token_buffer;
+    query_buffer update_torrent_buffer;
+    query_buffer update_user_buffer;
+
+    std::mutex peer_buffer_lock;
+    std::mutex peer_light_buffer_lock;
+    std::mutex snatch_buffer_lock;
+    std::mutex token_buffer_lock;
+    std::mutex torrent_buffer_lock;
+    std::mutex user_buffer_lock;

    std::queue<std::string> user_queue;
    std::queue<std::string> torrent_queue;
@@ -30,19 +61,16 @@ class mysql {
    std::queue<std::string> snatch_queue;
    std::queue<std::string> token_queue;

-    std::string mysql_db, mysql_host, mysql_username, mysql_password;
-    unsigned int mysql_port;
-    bool u_active, t_active, p_active, s_active, tok_active;
-    bool readonly;
-
-    // These locks prevent more than one thread from reading/writing the buffers.
-    // These should be held for the minimum time possible.
-    std::mutex user_queue_lock;
-    std::mutex torrent_buffer_lock;
-    std::mutex torrent_queue_lock;
    std::mutex peer_queue_lock;
    std::mutex snatch_queue_lock;
    std::mutex token_queue_lock;
+    std::mutex torrent_queue_lock;
+    std::mutex user_queue_lock;
+
+    std::string mysql_db, mysql_host, mysql_username, mysql_password;
+    unsigned int mysql_port;
+    bool peer_flush_active, snatch_flush_active, token_flush_active, torrent_flush_active, user_flush_active;
+    bool readonly;

    std::shared_ptr<spdlog::logger> logger;

@@ -50,11 +78,7 @@ class mysql {
    void load_tokens(torrent_list &torrents);
    mysqlpp::Connection create_connection();

-    void do_flush_users();
-    void do_flush_torrents();
-    void do_flush_snatches();
-    void do_flush_peers();
-    void do_flush_tokens();
+    void do_flush(const char *name, std::queue<std::string> &queue, std::mutex &mtx, bool &active, std::atomic<uint32_t>& counter);

    void flush_users();
    void flush_torrents();
@@ -66,6 +90,10 @@ class mysql {
 public:
    bool verbose_flush;

+    std::mutex torrent_list_mutex;
+    std::mutex user_list_mutex;
+    std::mutex whitelist_mutex;
+
    mysql(config * conf);
    void reload_config(config * conf);
    void flush();
@@ -74,27 +102,25 @@ class mysql {
    void load_torrents(torrent_list &torrents);
    void load_users(user_list &users);
    void load_whitelist(std::vector<std::string> &whitelist);
+    std::string quote(std::string value);

-    // (id,uploaded_change,downloaded_change)
-    void record_user(const std::string &record);
+    // (uid,fid,active,peerid,useragent,ip,uploaded,downloaded,upspeed,downspeed,left,timespent,announces,tstamp)
+    void record_peer(const std::string &record);
+
+    // (fid,peerid,timespent,announces,tstamp)
+    void record_peer_light(const std::string &record);
+
+    // (uid,fid,tstamp)
+    void record_snatch(const std::string &record);
+
+    // (uid,fid,downloaded_change)
+    void record_token(const std::string &record);

    // (id,seeders,leechers,snatched_change,balance)
    void record_torrent(const std::string &record);

-    // (uid,fid,tstamp)
-    void record_snatch(const std::string &record, const std::string &ip);
-
-    // (uid,fid,active,peerid,useragent,ip,uploaded,downloaded,upspeed,downspeed,left,timespent,announces,tstamp)
-    void record_peer(const std::string &record, const std::string &ip, const std::string &peer_id, const std::string &useragent);
-
-    // (fid,peerid,timespent,announces,tstamp)
-    void record_peer(const std::string &record, const std::string &peer_id);
-
-    void record_token(const std::string &record);
-
-    std::mutex torrent_list_mutex;
-    std::mutex user_list_mutex;
-    std::mutex whitelist_mutex;
+    // (id,uploaded_change,downloaded_change)
+    void record_user(const std::string &record);
 };

 #pragma GCC visibility pop
@@ -12,6 +12,8 @@
 #include "response.h"
 #include "events.h"

+std::mutex peak_open_mutex;
+
 // Define the connection mother (first half) and connection middlemen (second half)

 //---------- Connection mother - spawns middlemen and lets them deal with the connection
@@ -52,7 +54,7 @@ void connection_mother::reload_config(config * conf) {
    unsigned int old_max_connections = max_connections;
    load_config(conf);
    if (old_listen_port != listen_port) {
-        logger->info("Changing listen port from " + std::to_string(old_listen_port) +" to " + std::to_string(listen_port));
+        logger->info("Changing listen port from {} to {}", old_listen_port, listen_port);
        int new_listen_socket = create_listen_socket();
        if (new_listen_socket != 0) {
            listen_event.stop();
@@ -75,7 +77,7 @@ int connection_mother::create_listen_socket() {
    // Stop old sockets from hogging the port
    int yes = 1;
    if (setsockopt(new_listen_socket, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(int)) == -1) {
-        logger->error("Could not reuse socket: " + std::string(strerror(errno)));
+        logger->error("Could not reuse socket: {}", strerror(errno));
        return 0;
    }

@@ -86,24 +88,24 @@ int connection_mother::create_listen_socket() {

    // Bind
    if (bind(new_listen_socket, (sockaddr *) &address, sizeof(address)) == -1) {
-        logger->error("Bind failed: " + std::string(strerror(errno)));
+        logger->error("Bind failed: {}", strerror(errno));
        return 0;
    }

    // Listen
    if (listen(new_listen_socket, max_connections) == -1) {
-        logger->error("Listen failed: " + std::string(strerror(errno)));
+        logger->error("Listen failed: {}", strerror(errno));
        return 0;
    }

    // Set non-blocking
    int flags = fcntl(new_listen_socket, F_GETFL);
    if (flags == -1) {
-        logger->error("Could not get socket flags: " + std::string(strerror(errno)));
+        logger->error("Could not get socket flags: {}", strerror(errno));
        return 0;
    }
    if (fcntl(new_listen_socket, F_SETFL, flags | O_NONBLOCK) == -1) {
-        logger->error("Could not set non-blocking: " + std::string(strerror(errno)));
+        logger->error("Could not set non-blocking: {}", strerror(errno));
        return 0;
    }

@@ -111,7 +113,7 @@ int connection_mother::create_listen_socket() {
 }

 void connection_mother::run() {
-    logger->info("Sockets up on port " + std::to_string(listen_port) + ", starting event loop!");
+    logger->info("Sockets up on port {}, starting event loop!", listen_port);
    ev_loop(ev_default_loop(0), 0);
 }

@@ -119,7 +121,13 @@ void connection_mother::handle_connect(ev::io &watcher, int events_flags) {
    // Spawn a new middleman
    if (stats.open_connections < max_middlemen) {
        stats.opened_connections++;
-        stats.open_connections++;
+        {
+            const std::lock_guard<std::mutex> lock(peak_open_mutex);
+            unsigned int current_open = stats.open_connections++;
+            if (stats.peak_connections < current_open) {
+                stats.peak_connections = current_open;
+            }
+        }
        new connection_middleman(listen_socket, work, this);
    }
 }
@@ -138,7 +146,7 @@ connection_middleman::connection_middleman(int &listen_socket, worker * new_work
    auto logger = spdlog::get("logger");
    connect_sock = accept(listen_socket, NULL, NULL);
    if (connect_sock == -1) {
-        logger->error("Accept failed, errno " + std::to_string(errno) + ": " + std::string(strerror(errno)));
+        logger->error("Accept failed, errno {}: {}", errno, strerror(errno));
        delete this;
        return;
    }
@@ -0,0 +1,200 @@
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "jemalloc_parse.h"
+
+/* parse a size_t decimal text representation */
+const char *parse_sz(const char *in, const char *find, size_t *target) {
+    const char *p = strstr(in, find);
+    if (!p) {
+        // didn't find what we were looking for
+        return NULL;
+    }
+    p += strlen(find);
+
+    // copy the digits to a null-terminated string in order to pass it to strtoul()
+    // the largest unsigned long decimal representation is 4294967295 (10 bytes)
+    char convert[11];
+    char *c = convert;
+    while (isspace(*p)) {
+        p++;
+    }
+    while (isdigit(*p) && c < convert + sizeof(convert) - 1) {
+        *c++ = *p++;
+    }
+    *c = '\0';
+    *target = strtoul(convert, &c, 10);
+
+    return p + 1; // one past the last digit
+}
+
+/* parse an unsigned long long decimal text representation */
+const char *parse_ull(const char *in, const char *find, unsigned long long *target) {
+    const char *p = strstr(in, find);
+    if (!p) {
+        // didn't find what we were looking for
+        return NULL;
+    }
+    p += strlen(find);
+
+    // copy the digits to a null-terminated string in order to pass it to strtoull()
+    // the largest unsigned long long decimal representation is 18446744073709551615 (21 bytes)
+    char convert[22];
+    char *c = convert;
+    while (isspace(*p)) {
+        p++;
+    }
+    while(isdigit(*p) && c < convert + sizeof(convert) - 1) {
+        *c++ = *p++;
+    }
+    *c = '\0';
+    *target = strtoull(convert, &c, 10);
+
+    return p + 1; // one past the last digit
+}
+
+int jemalloc_parse(const char *in, struct ocelot_alloc_info *out) {
+    /* Parse the output of jemalloc_status() plain output
+     * This is an ugly hack; it would be faster to build directly what we want
+     * rather than walk down a formatted string that has generated lots of
+     * information that is discarded.
+     * If the input breaks, the error code indicates where the parsing failed.
+     */
+
+    // set everything to zero
+    memset (out, 0, sizeof(struct ocelot_alloc_info));
+
+    /*
+___ Begin jemalloc statistics ___
+Version: "5.3.0-0-g54eaed1d8b56b1aa528be3bdd1877e59c56fa90c"
+Build-time option settings
+  ...
+Run-time option settings
+  ...
+Profiling settings
+  ...
+Arenas: 17
+Quantum size: 16
+Page size: 4096
+Maximum thread-cached size class: 32768
+Number of bin size classes: 36
+Number of thread-cache bin size classes: 41
+Number of large size classes: 196
+    */
+    if (!(in = strstr(in, "___ Begin jemalloc statistics ___"))) {
+        return 1;
+    }
+
+    if (!(in = parse_sz(in, "Arenas: ", &out->nr_arena))) {
+        return 10;
+    }
+    if (!(in = parse_sz(in, "Number of bin size classes: ", &out->nr_bin_small))) {
+        return 11;
+    }
+    if (!(in = parse_sz(in, "Number of thread-cache bin size classes: ", &out->nr_bin_tc))) {
+        return 12;
+    }
+    if (!(in = parse_sz(in, "Number of large size classes: ", &out->nr_bin_large))) {
+        return 13;
+    }
+
+    // Allocated: 895744, active: 1024000, metadata: 3047664 (n_thp 0), resident: 3985408, mapped: 7315456, retained: 1073152
+    if (!(in = parse_ull(in, "Allocated: ", &out->mem_allocated))) {
+        return 20;
+    }
+    if (!(in = parse_ull(in, "active: ", &out->mem_active))) {
+        return 21;
+    }
+    if (!(in = parse_ull(in, "metadata: ", &out->mem_metadata))) {
+        return 22;
+    }
+    if (!(in = parse_ull(in, "resident: ", &out->mem_resident))) {
+        return 23;
+    }
+    if (!(in = parse_ull(in, "mapped: ", &out->mem_mapped))) {
+        return 24;
+    }
+    if (!(in = parse_ull(in, "retained: ", &out->mem_retained))) {
+        return 25;
+    }
+
+    /*
+                            allocated         nmalloc   (#/sec)         ndalloc   (#/sec)       nrequests   (#/sec)           nfill   (#/sec)          nflush   (#/sec)
+small:                         247840          131452         0          129036         0           24219         0            2402         0            8543         0
+large:                         290816             815         0             808         0             971         0             815         0            2351         0
+total:                         538656          132267         0          129844         0   
+    */
+    if (!(in = strstr(in, "(#/sec)\nsmall:"))) {
+        return 30;
+    }
+
+    if (!(in = parse_sz(in, " ", &out->small.allocated))) {
+        return 40;
+    }
+    if (!(in = parse_sz(in, " ", &out->small.nmalloc_total))) {
+        return 41;
+    }
+    if (!(in = parse_sz(in, " ", &out->small.ndalloc_rate))) {
+        return 42;
+    }
+    if (!(in = parse_sz(in, " ", &out->small.ndalloc_total))) {
+        return 43;
+    }
+    if (!(in = parse_sz(in, " ", &out->small.nrequests_rate))) {
+        return 44;
+    }
+    if (!(in = parse_sz(in, " ", &out->small.nrequests_total))) {
+        return 45;
+    }
+    if (!(in = parse_sz(in, " ", &out->small.nfill_rate))) {
+        return 46;
+    }
+    if (!(in = parse_sz(in, " ", &out->small.nfill_total))) {
+        return 47;
+    }
+    if (!(in = parse_sz(in, " ", &out->small.nflush_rate))) {
+        return 48;
+    }
+    if (!(in = parse_sz(in, " ", &out->small.nflush_total))) {
+        return 49;
+    }
+
+    if (!(in = strstr(in, "\nlarge:"))) {
+        return 60;
+    }
+
+    if (!(in = parse_sz(in, " ", &out->large.allocated))) {
+        return 70;
+    }
+    if (!(in = parse_sz(in, " ", &out->large.nmalloc_total))) {
+        return 71;
+    }
+    if (!(in = parse_sz(in, " ", &out->large.ndalloc_rate))) {
+        return 72;
+    }
+    if (!(in = parse_sz(in, " ", &out->large.ndalloc_total))) {
+        return 73;
+    }
+    if (!(in = parse_sz(in, " ", &out->large.nrequests_rate))) {
+        return 74;
+    }
+    if (!(in = parse_sz(in, " ", &out->large.nrequests_total))) {
+        return 75;
+    }
+    if (!(in = parse_sz(in, " ", &out->large.nfill_rate))) {
+        return 76;
+    }
+    if (!(in = parse_sz(in, " ", &out->large.nfill_total))) {
+        return 77;
+    }
+    if (!(in = parse_sz(in, " ", &out->large.nflush_rate))) {
+        return 78;
+    }
+    if (!(in = parse_sz(in, " ", &out->large.nflush_total))) {
+        return 79;
+    }
+
+    return 0;
+}
@@ -0,0 +1,37 @@
+#ifndef SRC_PARSE_JEMALLOC_H_
+#define SRC_PARSE_JEMALLOC_H_
+
+struct ocelot_alloc_stat {
+    size_t allocated;
+    size_t nmalloc_total;
+    size_t nmalloc_rate;
+    size_t ndalloc_total;
+    size_t ndalloc_rate;
+    size_t nrequests_total;
+    size_t nrequests_rate;
+    size_t nfill_total;
+    size_t nfill_rate;
+    size_t nflush_total;
+    size_t nflush_rate;
+};
+
+struct ocelot_alloc_info {
+    size_t nr_arena;
+    size_t nr_bin_small;
+    size_t nr_bin_tc;
+    size_t nr_bin_large;
+
+    unsigned long long mem_allocated;
+    unsigned long long mem_active;
+    unsigned long long mem_metadata;
+    unsigned long long mem_resident;
+    unsigned long long mem_mapped;
+    unsigned long long mem_retained;
+
+    struct ocelot_alloc_stat small;
+    struct ocelot_alloc_stat large;
+};
+
+int jemalloc_parse(const char *in, struct ocelot_alloc_info *out);
+
+#endif  // SRC_PARSE_JEMALLOC_H_
@@ -6,29 +6,6 @@

 #include "misc_functions.h"

-int32_t strtoint32(const std::string& str) {
-    std::istringstream stream(str);
-    int32_t i = 0;
-    stream >> i;
-    return i;
-}
-
-int64_t strtoint64(const std::string& str) {
-    std::istringstream stream(str);
-    int64_t i = 0;
-    stream >> i;
-    return i;
-}
-
-
-std::string inttostr(const int i) {
-    std::string str;
-    std::stringstream out;
-    out << i;
-    str = out.str();
-    return str;
-}
-
 std::string hex_decode(const std::string &in) {
    std::string out;
    out.reserve(20);
@@ -60,26 +37,3 @@ std::string hex_decode(const std::string &in) {
    }
    return out;
 }
-
-std::string bintohex(const std::string &in) {
-    std::string out;
-    size_t length = in.length();
-    out.reserve(2*length);
-    for (unsigned int i = 0; i < length; i++) {
-        unsigned char x = static_cast<unsigned char>((in[i] & 0xF0) >> 4);
-        if (x > 9) {
-            x += 'a' - 10;
-        } else {
-            x += '0';
-        }
-        out.push_back(x);
-        x = in[i] & 0x0F;
-        if (x > 9) {
-            x += 'a' - 10;
-        } else {
-            x += '0';
-        }
-        out.push_back(x);
-    }
-    return out;
-}
@@ -5,10 +5,6 @@

 #include <string>

-int32_t strtoint32(const std::string& str);
-int64_t strtoint64(const std::string& str);
-std::string inttostr(int i);
 std::string hex_decode(const std::string &in);
-std::string bintohex(const std::string &in);

 #endif  // SRC_MISC_FUNCTIONS_H_
@@ -26,10 +26,6 @@ static schedule *sched;

 struct stats_t stats;

-const char * version() {
-    return "2.1.1";
-}
-
 static void create_daemon() {
    pid_t pid;

@@ -113,7 +109,8 @@ int main(int argc, char **argv) {
            conf_arg = true;
            conf_file_path = argv[++i];
        } else if (strcmp(argv[i], "-V") == 0 || strcmp(argv[i], "--version") == 0) {
-            std::cout << "Ocelot version " << version() << std::endl;
+            // preprocessor concatenation
+            std::cout << "Ocelot version " OCELOT_VERSION ", compiled " __DATE__ " " __TIME__ << std::endl;
            return 0;
        } else {
            std::cout << "Usage: " << argv[0] << " [-v] [-c configfile] [--daemonize]" << std::endl;
@@ -146,6 +143,9 @@ int main(int argc, char **argv) {
    auto combined_logger = std::make_shared<spdlog::logger>("logger", begin(sinks), end(sinks));
    // If we don't set flush on info, the file log takes a long while to actually flush
    combined_logger->flush_on(spdlog::level::info);
+    combined_logger->info(
+        "Ocelot version " OCELOT_VERSION ", compiled " __DATE__ " "  __TIME__
+    );
    spdlog::register_logger(combined_logger);

    db = new mysql(conf);
@@ -167,17 +167,29 @@ int main(int argc, char **argv) {
    db->load_whitelist(whitelist);

    stats.open_connections = 0;
+    stats.peak_connections = 0;
    stats.opened_connections = 0;
    stats.connection_rate = 0;
    stats.requests = 0;
    stats.request_rate = 0;
    stats.leechers = 0;
    stats.seeders = 0;
+    stats.user_queue_size = 0;
+    stats.torrent_queue_size = 0;
+    stats.peer_queue_size = 0;
+    stats.snatch_queue_size = 0;
+    stats.token_queue_size = 0;
+    stats.max_client_request_len = 0;
    stats.announcements = 0;
    stats.succ_announcements = 0;
    stats.scrapes = 0;
    stats.bytes_read = 0;
    stats.bytes_written = 0;
+    stats.auth_error_secret = 0;
+    stats.auth_error_report = 0;
+    stats.auth_error_announce_key = 0;
+    stats.client_error = 0;
+    stats.http_error = 0;
    stats.start_time = time(NULL);

    // Create worker object, which handles announces and scrapes and all that jazz
@@ -3,6 +3,12 @@

 // Copyright [2017-2024] Orpheus

+#define OCELOT_VERSION_MAJOR 2
+#define OCELOT_VERSION_MINOR 1
+#define OCELOT_VERSION_BUGFIX 4
+#define OCELOT_VERSION_NREV 0
+#define OCELOT_VERSION "2.1.4"
+
 #include <time.h>

 #include <string>
@@ -94,6 +100,7 @@ typedef std::unordered_map<std::string, std::string> params_type;

 struct stats_t {
    std::atomic<uint32_t> open_connections;
+    std::atomic<uint32_t> peak_connections;
    std::atomic<uint64_t> opened_connections;
    std::atomic<uint64_t> connection_rate;
    std::atomic<uint32_t> leechers;
@@ -103,6 +110,7 @@ struct stats_t {
    std::atomic<uint32_t> peer_queue_size;
    std::atomic<uint32_t> snatch_queue_size;
    std::atomic<uint32_t> token_queue_size;
+    std::atomic<uint32_t> max_client_request_len;
    std::atomic<uint64_t> requests;
    std::atomic<uint64_t> request_rate;
    std::atomic<uint64_t> announcements;
@@ -110,6 +118,11 @@ struct stats_t {
    std::atomic<uint64_t> scrapes;
    std::atomic<uint64_t> bytes_read;
    std::atomic<uint64_t> bytes_written;
+    std::atomic<uint64_t> auth_error_secret;
+    std::atomic<uint64_t> auth_error_report;
+    std::atomic<uint64_t> auth_error_announce_key;
+    std::atomic<uint64_t> client_error;
+    std::atomic<uint64_t> http_error;
    time_t start_time;
 };
 extern struct stats_t stats;
@@ -1,91 +1,277 @@
 // Copyright [2017-2024] Orpheus

-#include <iostream>
-#include <map>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include <sys/resource.h>
+
+#include <jemalloc/jemalloc.h>
+#include <spdlog/spdlog.h> // debug
+
+#include <fstream>
 #include <sstream>
+#include <iostream>
+#include <iomanip>  // for std::setfill() and std::setw()
+#include <map>
+#include <mutex>
+#include <thread>

 #include "ocelot.h"
 #include "misc_functions.h"
+#include "jemalloc_parse.h"
 #include "report.h"
 #include "response.h"
 #include "user.h"

-std::string report(params_type &params, user_list &users_list, client_opts_t &client_opts, unsigned int announce_interval, unsigned int announce_jitter) {
-    std::stringstream output;
-    std::string action = params["get"];
-    if (action == "stats") {
-        time_t uptime = time(NULL) - stats.start_time;
-        int up_d = uptime / 86400;
-        uptime -= up_d * 86400;
-        int up_h = uptime / 3600;
-        uptime -= up_h * 3600;
-        int up_m = uptime / 60;
-        int up_s = uptime - up_m * 60;
+int jemalloc_fd;
+std::mutex jemalloc_fd_mutex;

-        output << "Uptime: " << up_d << " days, "
-                << (up_h < 10 ? "0" : "") << inttostr(up_h) << ':'
-                << (up_m < 10 ? "0" : "") << inttostr(up_m) << ':'
-                << (up_s < 10 ? "0" : "") << inttostr(up_s) << "\n"
-            << "version: " << version() << "\n"
-            << stats.opened_connections << " connections opened\n"
-            << stats.open_connections << " open connections\n"
-            << stats.connection_rate << " connections/s\n"
-            << stats.requests << " requests handled\n"
-            << stats.request_rate << " requests/s\n"
-            << stats.succ_announcements << " successful announcements\n"
-            << (stats.announcements - stats.succ_announcements) << " failed announcements\n"
-            << stats.scrapes << " scrapes\n"
-            << stats.leechers << " leechers tracked\n"
-            << stats.seeders << " seeders tracked\n"
-            << stats.user_queue_size << " items in user queue\n"
-            << stats.torrent_queue_size << " items in torrent queue\n"
-            << stats.peer_queue_size << " items in peer queue\n"
-            << stats.snatch_queue_size << " items in snatch queue\n"
-            << stats.token_queue_size << " items in token queue\n"
-            << stats.bytes_read << " bytes read\n"
-            << stats.bytes_written << " bytes written\n"
-            << announce_interval << " announce interval\n"
-            << announce_jitter << " announce jitter\n"
-            ;
-    } else if (action == "prom_stats") {
-        time_t uptime = time(NULL) - stats.start_time;
-        output << "ocelot_uptime " << uptime << "\n"
-            << "ocelot_open_connections " << stats.open_connections << "\n"
-            << "ocelot_connection_rate " << stats.connection_rate << "\n"
-            << "ocelot_requests " << stats.requests << "\n"
-            << "ocelot_request_rate " << stats.request_rate << "\n"
-            << "ocelot_succ_announcements " << stats.succ_announcements << "\n"
-            << "ocelot_total_announcements " << stats.announcements << "\n"
-            << "ocelot_scrapes " << stats.scrapes << "\n"
-            << "ocelot_leechers " << stats.leechers << "\n"
-            << "ocelot_seeders " << stats.seeders << "\n"
-            << "ocelot_user_queue " << stats.user_queue_size << "\n"
-            << "ocelot_torrent_queue " << stats.torrent_queue_size << "\n"
-            << "ocelot_peer_queue " << stats.peer_queue_size << "\n"
-            << "ocelot_snatch_queue " << stats.snatch_queue_size << "\n"
-            << "ocelot_token_queue " << stats.token_queue_size << "\n"
-            << "ocelot_bytes_read " << stats.bytes_read << "\n"
-            << "ocelot_bytes_written " << stats.bytes_written << "\n#";
-    } else if (action == "user") {
-        std::string key = params["key"];
-        if (key.empty()) {
-            output << "Invalid action\n";
-        } else {
-            user_list::const_iterator u = users_list.find(key);
-            if (u != users_list.end()) {
-                output << "{\"id\":" << u->second->get_id()
-                    << ",\"leeching\":" << u->second->get_leeching()
-                    << ",\"seeding\":" << u->second->get_seeding()
-                    << ",\"deleted\":" << u->second->is_deleted()
-                    << ",\"protected\":" << u->second->is_protected()
-                    << ",\"can_leech\":" << u->second->can_leech()
-                    << "}" << "\n";
-                return response(output.str(), client_opts);
-            }
-        }
-    } else {
-        output << "Invalid action\n";
+/* Getting jemalloc stats back to Gazelle is a bit cumbersome
+ * because all jemalloc can do is write to a file descriptor.
+ * So we let it write to a file (which is why using a ramdisk
+ * is important) and then read it back to return as an HTTP
+ * response.
+ */
+
+// callback function for malloc_stats_print()
+void jemalloc_stats_export(void *opaque, const char *buf) {
+    if (jemalloc_fd > 0) {
+        write(jemalloc_fd, buf, strlen(buf));
    }
-    output << "success";
-    return response(output.str(), client_opts);
+}
+
+int dump_jemalloc(const char *filename, const char *opts) {
+    // open the file descriptor
+    std::lock_guard<std::mutex> guard(jemalloc_fd_mutex);
+    jemalloc_fd = open(filename, O_CREAT|O_WRONLY, 0600);
+    if (jemalloc_fd == -1) {
+        return jemalloc_fd;
+    }
+
+    // dump stats
+    malloc_stats_print(jemalloc_stats_export, NULL, opts);
+
+    // tidy up
+    int result = close(jemalloc_fd);
+    jemalloc_fd = 0;
+    return result;
+}
+
+std::string report_jemalloc_plain(const char *opts, const std::string path) {
+    std::string filename(path + "/jemalloc.json." + std::to_string(pthread_self()));
+    if (dump_jemalloc(filename.c_str(), opts) != 0) {
+        // return an empty string if something went bananas
+        unlink(filename.c_str());
+        return std::string();
+    }
+
+    // slurp the contents into a string
+    std::ifstream input(filename);
+    std::ostringstream output;
+    while(input >> output.rdbuf())
+        ;
+    unlink(filename.c_str());
+    output << "\n";
+
+    std::shared_ptr<spdlog::logger> logger(spdlog::get("logger"));
+    logger->debug("jemalloc stats written to " + filename + ", size=" + std::to_string(output.str().size()));
+    return output.str();
+}
+
+#define ITEM_BYTE(LABEL,    VALUE) "\"" LABEL "\":{\"type\":\"byte\",\"value\":" << VALUE << "}"
+#define ITEM_ELAPSED(LABEL, VALUE) "\"" LABEL "\":{\"type\":\"elapsed\",\"value\":" << VALUE << "}"
+#define ITEM_NUM(LABEL,     VALUE) "\"" LABEL "\":{\"type\":\"number\",\"value\":" << VALUE << "}"
+#define ITEM_STR(LABEL,     VALUE) "\"" LABEL "\":{\"type\":\"string\",\"value\":\"" VALUE "\"}"
+#define ITEM_VERSION(LABEL, MAJ, MIN, BUGFIX) "\"" LABEL "\":{\"type\":\"string\",\"value\":\"" << MAJ << "." << MIN << "." << BUGFIX << "\"}"
+
+std::string report(const uint32_t announce_interval, const uint32_t announce_jitter) {
+    std::ostringstream output;
+    output << "{"
+        << ITEM_STR("version", OCELOT_VERSION) << ','
+        << ITEM_VERSION("jemalloc version", JEMALLOC_VERSION_MAJOR, JEMALLOC_VERSION_MINOR, JEMALLOC_VERSION_BUGFIX) << ','
+        << ITEM_NUM("connections opened", stats.opened_connections) << ','
+        << ITEM_NUM("open connections", stats.open_connections) << ','
+        << ITEM_NUM("peak connections", stats.peak_connections) << ','
+        << ITEM_NUM("connections/s", stats.connection_rate) << ','
+        << ITEM_NUM("requests handled", stats.requests) << ','
+        << ITEM_NUM("requests/s", stats.request_rate) << ','
+        << ITEM_NUM("successful announcements", stats.succ_announcements) << ','
+        << ITEM_NUM("failed announcements", (stats.announcements - stats.succ_announcements)) << ','
+        << ITEM_NUM("scrapes", stats.scrapes) << ','
+        << ITEM_NUM("leechers tracked", stats.leechers) << ','
+        << ITEM_NUM("seeders tracked", stats.seeders) << ','
+        << ITEM_NUM("items in user queue", stats.user_queue_size) << ','
+        << ITEM_NUM("items in torrent queue", stats.torrent_queue_size) << ','
+        << ITEM_NUM("items in peer queue", stats.peer_queue_size) << ','
+        << ITEM_NUM("items in snatch queue", stats.snatch_queue_size) << ','
+        << ITEM_NUM("items in token queue", stats.token_queue_size) << ','
+        << ITEM_BYTE("max client request length", stats.max_client_request_len) << ','
+        << ITEM_BYTE("bytes read", stats.bytes_read) << ','
+        << ITEM_BYTE("bytes written", stats.bytes_written) << ','
+        << ITEM_NUM("bad tracker secret received", stats.auth_error_secret) << ','
+        << ITEM_NUM("bad report secret received", stats.auth_error_report) << ','
+        << ITEM_NUM("bad announce key received", stats.auth_error_announce_key) << ','
+        << ITEM_NUM("bad client configuration", stats.client_error) << ','
+        << ITEM_NUM("bad http request", stats.http_error) << ','
+        << ITEM_NUM("announce interval", announce_interval) << ','
+        << ITEM_NUM("announce jitter", announce_jitter) << ','
+        << ITEM_ELAPSED("uptime", (time(NULL) - stats.start_time))
+        ;
+
+    struct rusage r;
+    if (getrusage(RUSAGE_SELF, &r) == 0) {
+        output << ','
+            << ITEM_ELAPSED("user time", r.ru_utime.tv_sec << '.' << std::setfill('0') << std::setw(6) << r.ru_utime.tv_usec) << ','
+            << ITEM_ELAPSED("system time", r.ru_stime.tv_sec << '.' << std::setfill('0') << std::setw(6) << r.ru_stime.tv_usec) << ','
+            << ITEM_BYTE("maximum resident set size", r.ru_maxrss * 1024) << ','
+            << ITEM_NUM("minor page faults", r.ru_minflt) << ','
+            << ITEM_NUM("major page faults", r.ru_majflt) << ','
+            << ITEM_NUM("blocks in", r.ru_inblock) << ','
+            << ITEM_NUM("blocks out", r.ru_oublock) << ','
+            << ITEM_NUM("voluntary context switches", r.ru_nvcsw ) << ','
+            << ITEM_NUM("involuntary context switches", r.ru_nivcsw )
+            ;
+    }
+    output << "}\n";
+    return output.str();
+}
+
+std::string report_prom_stats(const char *jemalloc) {
+    std::ostringstream output;
+
+    struct ocelot_alloc_info ji;
+    int result = jemalloc_parse(jemalloc, &ji);
+
+    output << "ocelot_uptime " << time(NULL) - stats.start_time << "\n"
+        "ocelot_version " << OCELOT_VERSION_MAJOR
+            << std::setfill('0') << std::setw(3) << OCELOT_VERSION_MINOR
+            << std::setfill('0') << std::setw(3) << OCELOT_VERSION_BUGFIX
+            << std::setfill('0') << std::setw(3) << OCELOT_VERSION_NREV << "\n"
+        "jemalloc_version " << JEMALLOC_VERSION_MAJOR
+            << std::setfill('0') << std::setw(3) << JEMALLOC_VERSION_MINOR
+            << std::setfill('0') << std::setw(3) << JEMALLOC_VERSION_BUGFIX << "\n"
+        "ocelot_open_connections " << stats.open_connections << "\n"
+
+        "#TYPE ocelot_peak_connections counter\n"
+        "ocelot_peak_connections "    << stats.peak_connections << "\n"
+        "ocelot_connection_rate "     << stats.connection_rate << "\n"
+        "ocelot_requests "            << stats.requests << "\n"
+        "ocelot_request_rate "        << stats.request_rate << "\n"
+        "ocelot_succ_announcements "  << stats.succ_announcements << "\n"
+        "ocelot_total_announcements " << stats.announcements << "\n"
+        "ocelot_scrapes "             << stats.scrapes << "\n"
+        "ocelot_leechers "            << stats.leechers << "\n"
+        "ocelot_seeders "             << stats.seeders << "\n"
+        "ocelot_user_queue "          << stats.user_queue_size << "\n"
+        "ocelot_torrent_queue "       << stats.torrent_queue_size << "\n"
+        "ocelot_peer_queue "          << stats.peer_queue_size << "\n"
+        "ocelot_snatch_queue "        << stats.snatch_queue_size << "\n"
+        "ocelot_token_queue "         << stats.token_queue_size << "\n"
+        "ocelot_bytes_read "          << stats.bytes_read << "\n"
+        "ocelot_bytes_written "       << stats.bytes_written << "\n"
+
+        "#TYPE ocelot_max_client_request_len counter\n"
+        "ocelot_max_client_request_len " << stats.max_client_request_len << "\n"
+
+        "#TYPE ocelot_error counter counter\n"
+        "ocelot_error{kind=\"secret\"} "         << stats.auth_error_secret << "\n"
+        "ocelot_error{kind=\"report\"} "         << stats.auth_error_report << "\n"
+        "ocelot_error{kind=\"announce\"} "       << stats.auth_error_announce_key << "\n"
+        "ocelot_error{kind=\"client\"} "         << stats.client_error << "\n"
+        "ocelot_error{kind=\"http\"} "           << stats.http_error << "\n"
+        "ocelot_error{kind=\"jemalloc_parse\"} " << result << "\n"
+
+        "#TYPE jemalloc_arena_total counter\n"
+        "jemalloc_arena_total " << ji.nr_arena << "\n"
+
+        "#TYPE jemalloc_bin_total counter\n"
+        "jemalloc_bin_total{bin=\"small\"} "        << ji.nr_bin_small << "\n"
+        "jemalloc_bin_total{bin=\"thread_cache\"} " << ji.nr_bin_tc << "\n"
+        "jemalloc_bin_total{bin=\"large\"} "        << ji.nr_bin_large << "\n"
+
+        "#TYPE jemalloc_allocated counter\n"
+        "jemalloc_allocated{bucket=\"small\"} " << ji.small.allocated << "\n"
+        "jemalloc_allocated{bucket=\"large\"} " << ji.large.allocated << "\n"
+
+        "#TYPE jemalloc_nmalloc_total counter\n"
+        "jemalloc_nmalloc_total{bucket=\"small\"} " << ji.small.nmalloc_total << "\n"
+        "jemalloc_nmalloc_total{bucket=\"large\"} " << ji.large.nmalloc_total << "\n"
+
+        "#TYPE jemalloc_ndalloc_total counter\n"
+        "jemalloc_ndalloc_total{bucket=\"small\"} " << ji.small.ndalloc_total << "\n"
+        "jemalloc_ndalloc_total{bucket=\"large\"} " << ji.large.ndalloc_total << "\n"
+
+        "#TYPE jemalloc_nrequests_total counter\n"
+        "jemalloc_nrequests_total{bucket=\"small\"} " << ji.small.nrequests_total << "\n"
+        "jemalloc_nrequests_total{bucket=\"large\"} " << ji.large.nrequests_total << "\n"
+
+        "#TYPE jemalloc_nfill_total counter\n"
+        "jemalloc_nfill_total{bucket=\"small\"} " << ji.small.nfill_total << "\n"
+        "jemalloc_nfill_total{bucket=\"large\"} " << ji.large.nfill_total << "\n"
+
+        "#TYPE jemalloc_nflush_total counter\n"
+        "jemalloc_nflush_total{bucket=\"small\"} " << ji.small.nflush_total << "\n"
+        "jemalloc_nflush_total{bucket=\"large\"} " << ji.large.nflush_total << "\n"
+
+        "#TYPE jemalloc_nflush_total gauge\n"
+        "jemalloc_memory{global=\"allocated\"} " << ji.mem_allocated << "\n"
+        "jemalloc_memory{global=\"active\"} "    << ji.mem_active << "\n"
+        "jemalloc_memory{global=\"metadata\"} "  << ji.mem_metadata << "\n"
+        "jemalloc_memory{global=\"resident\"} "  << ji.mem_resident << "\n"
+        "jemalloc_memory{global=\"mapped\"} "   << ji.mem_mapped << "\n"
+        "jemalloc_memory{global=\"retained\"} "  << ji.mem_retained << "\n"
+
+        "#TYPE jemalloc_nflush_rate gauge\n"
+        "jemalloc_allocated{bucket=\"small\"} " << ji.small.allocated << "\n"
+        "jemalloc_allocated{bucket=\"large\"} " << ji.large.allocated << "\n"
+
+        "#TYPE jemalloc_nflush_rate gauge\n"
+        "jemalloc_nmalloc_rate{bucket=\"small\"} " << ji.small.nmalloc_rate << "\n"
+        "jemalloc_nmalloc_rate{bucket=\"large\"} " << ji.large.nmalloc_rate << "\n"
+
+        "#TYPE jemalloc_nflush_total gauge\n"
+        "jemalloc_ndalloc_rate{bucket=\"small\"} " << ji.small.ndalloc_rate << "\n"
+        "jemalloc_ndalloc_rate{bucket=\"large\"} " << ji.large.ndalloc_rate << "\n"
+
+        "#TYPE jemalloc_nflush_rate gauge\n"
+        "jemalloc_nrequests_rate{bucket=\"small\"} " << ji.small.nrequests_rate << "\n"
+        "jemalloc_nrequests_rate{bucket=\"large\"} " << ji.large.nrequests_rate << "\n"
+
+        "#TYPE jemalloc_nflush_rate gauge\n"
+        "jemalloc_fill_rate{bucket=\"small\"} " << ji.small.nfill_rate << "\n"
+        "jemalloc_fill_rate{bucket=\"large\"} " << ji.large.nfill_rate << "\n"
+
+        "#TYPE jemalloc_nflush_rate gauge\n"
+        "jemalloc_nflush_rate{bucket=\"small\"} " << ji.small.nflush_rate << "\n"
+        "jemalloc_nflush_rate{bucket=\"large\"} " << ji.large.nflush_rate << "\n"
+        ;
+
+    struct rusage r;
+    if (getrusage(RUSAGE_SELF, &r) == 0) {
+        output << "ocelot_time_user " << r.ru_utime.tv_sec << '.' << std::setfill('0') << std::setw(6) << r.ru_utime.tv_usec << "\n"
+            "ocelot_time_system " << r.ru_stime.tv_sec << '.' << std::setfill('0') << std::setw(6) << r.ru_stime.tv_usec << "\n"
+            "ocelot_max_rss " << r.ru_maxrss << "\n"
+            "ocelot_minor_fault " << r.ru_minflt << "\n"
+            "ocelot_major_fault " << r.ru_majflt << "\n"
+            "#TYPE ocelot_block counter\n"
+            "ocelot_block{op=\"in\"} " << r.ru_inblock << "\n"
+            "ocelot_block{op=\"out\"} " << r.ru_oublock << "\n"
+            "ocelot_nvcsw " << r.ru_nvcsw  << "\n"
+            "ocelot_nivcsw " << r.ru_nivcsw  << "\n"
+            ;
+    }
+    output << '#';
+    return output.str();
+}
+
+std::string report_user(const user_ptr u) {
+    std::ostringstream output;
+    output << "{\"id\":"     << u->get_id()
+        << ",\"leeching\":"  << u->get_leeching()
+        << ",\"seeding\":"   << u->get_seeding()
+        << ",\"deleted\":"   << u->is_deleted()
+        << ",\"protected\":" << u->is_protected()
+        << ",\"can_leech\":" << u->can_leech()
+        << "}\n";
+    return output.str();
 }
@@ -5,12 +5,19 @@

 #include <string>

-std::string report(
-    params_type &params,
-    user_list &users_list,
-    client_opts_t &client_opts,
-    unsigned int announce_interval,
-    unsigned int announce_jitter
-);
+// take a snapshot of the current stats
+void copy_stats(const struct stats_t *in, struct stats_t *out);
+
+// status report
+std::string report(const uint32_t announce_interval, const uint32_t announce_jitter);
+
+// a snapshot of jemalloc statistics
+std::string report_jemalloc_plain(const char *opts, const std::string path);
+
+// a prometheus scrape
+std::string report_prom_stats(const char *jemalloc_stats);
+
+// user report
+std::string report_user(const user_ptr u);

 #endif  // SRC_REPORT_H_
@@ -1,5 +1,7 @@
 // Copyright [2017-2024] Orpheus

+#include <fmt/format.h>
+
 #include <algorithm>
 #include <sstream>

@@ -10,7 +12,26 @@
 #include "misc_functions.h"
 #include "response.h"

-const std::string response(const std::string &body, client_opts_t &client_opts) {
+const std::string http_head(size_t content_length, client_opts_t &client_opts) {
+    const std::string content_type = client_opts.html ? "text/html" : "text/plain";
+
+    // rely on preprocessor string concatenation
+    std::string head(fmt::format(
+        "HTTP/1.1 200 OK\r\nServer: Ocelot " OCELOT_VERSION "\r\n"
+        "Content-Type: {}\r\n"
+        "Content-Length: {}\r\n",
+        content_type, content_length
+    ));
+    if (client_opts.gzip) {
+        head += "Content-Encoding: gzip\r\n";
+    }
+    if (client_opts.http_close) {
+        head += "Connection: Close\r\n";
+    }
+    return head + "\r\n";
+}
+
+const std::string http_response(const std::string &body, client_opts_t &client_opts) {
    std::string out;
    bool processed = false;
    if (client_opts.html) {
@@ -28,29 +49,17 @@ const std::string response(const std::string &body, client_opts_t &client_opts)
        processed = true;
    }
    if (processed) {
-        return response_head(out.length(), client_opts) + out;
+        return http_head(out.length(), client_opts) + out;
    }
-    return response_head(body.length(), client_opts) + body;
+    return http_head(body.length(), client_opts) + body;
 }

-const std::string response_head(size_t content_length, client_opts_t &client_opts) {
-    const std::string content_type = client_opts.html ? "text/html" : "text/plain";
-    std::string head = "HTTP/1.1 200 OK\r\nServer: Ocelot 1.0";
-    head += "\r\nContent-Type: " + content_type;
-    if (client_opts.gzip) {
-        head += "\r\nContent-Encoding: gzip";
-    }
-    if (client_opts.http_close) {
-        head += "\r\nConnection: Close";
-    }
-    head += "\r\nContent-Length: " + inttostr(content_length) + "\r\n\r\n";
-    return head;
-}
-
-const std::string error(const std::string &err, client_opts_t &client_opts) {
-    return response("d14:failure reason" + inttostr(err.length()) + ':' + err + "12:min intervali5400e8:intervali5400ee", client_opts);
-}
-
-const std::string warning(const std::string &msg) {
-    return "15:warning message" + inttostr(msg.length()) + ':' + msg;
+const std::string error(const std::string &message, client_opts_t &client_opts) {
+    return http_response(
+        fmt::format(
+            "d14:failure reason{}:{}12:min intervali5400e8:intervali5400ee",
+            message.length(), message
+        ),
+        client_opts
+    );
 }
@@ -7,9 +7,7 @@

 #include "ocelot.h"

-const std::string response(const std::string &body, client_opts_t &client_opts);
-const std::string response_head(size_t content_length, client_opts_t &client_opts);
+const std::string http_response(const std::string &body, client_opts_t &client_opts);
 const std::string error(const std::string &err, client_opts_t &client_opts);
-const std::string warning(const std::string &msg);

 #endif  // SRC_RESPONSE_H_
@@ -34,9 +34,10 @@ void schedule::handle(ev::timer &watcher, int events_flags) {
    stats.connection_rate = (stats.opened_connections - last_opened_connections) / cur_schedule_interval;
    stats.request_rate = (stats.requests - last_request_count) / cur_schedule_interval;
    if (counter % 20 == 0) {
-        logger->info(std::to_string(stats.open_connections) + " open, "
-        + std::to_string(stats.opened_connections) + " connections (" + std::to_string(stats.connection_rate) + "/s), "
-        + std::to_string(stats.requests) + " requests (" + std::to_string(stats.request_rate) + "/s)");
+        logger->info("{} open, {} connections ({}/s), {} requests ({}/s)",
+            stats.open_connections, stats.opened_connections, stats.connection_rate,
+            stats.requests, stats.request_rate
+        );
    }

    if (work->get_status() == CLOSING && db->all_clear() && sc->all_clear()) {
@@ -65,7 +65,7 @@ void site_comm::flush_tokens()
    std::lock_guard<std::mutex> lock(expire_queue_lock);
    size_t qsize = token_queue.size();
    if (verbose_flush || qsize > 0) {
-        logger->info("Token expire queue size: " + std::to_string(qsize));
+        logger->info("Token expire queue size: {}", qsize);
    }
    if (expire_token_buffer.empty()) {
        return;
@@ -104,9 +104,9 @@ void site_comm::do_flush_tokens()
            std::ostream request_stream(&request);
            request_stream << "GET " << site_path << "/tools.php?key=" << site_password
                << "&type=expiretoken&action=ocelot&tokens=" << token_queue.front() << " HTTP/1.0\r\n"
-                << "Host: " << site_host << "\r\n"
-                << "Accept: */*\r\n"
-                << "Connection: close\r\n\r\n";
+                   "Host: " << site_host << "\r\n"
+                   "Accept: */*\r\n"
+                   "Connection: close\r\n\r\n";

            boost::asio::write(socket, request);

@@ -130,13 +130,13 @@ void site_comm::do_flush_tokens()
                std::lock_guard<std::mutex> lock(expire_queue_lock);
                token_queue.pop();
            } else {
-                logger->error("Response returned with status code " + std::to_string(status_code) + " when trying to expire a token!");
+                logger->error("Response returned with status code {} when trying to expire a token!", status_code);
                // TODO: add exponential backoff
                std::this_thread::sleep_for(std::chrono::seconds(5));
            }
        }
    } catch (std::exception &er) {
-        logger->error("Exception: " + std::string(er.what()));
+        logger->error("Exception: {}", er.what());
    }
    t_active = false;
 }
@@ -1,6 +1,7 @@
 // Copyright [2017-2024] Orpheus

 #include <spdlog/spdlog.h>
+#include <fmt/format.h>

 #include <iostream>
 #include <string>
@@ -24,6 +25,8 @@
 #include "report.h"
 #include "user.h"

+std::mutex worker::client_len_mutex;
+
 //---------- Worker - does stuff with input
 worker::worker(config * conf_obj, torrent_list &torrents, user_list &users, std::vector<std::string> &_whitelist, mysql * db_obj, site_comm * sc) :
    conf(conf_obj), db(db_obj), s_comm(sc), torrents_list(torrents), users_list(users), whitelist(_whitelist), status(OPEN), reaper_active(false), randgen((std::random_device())()) {
@@ -69,26 +72,26 @@ bool worker::shutdown() {

 std::string worker::work(const std::string &input, std::string &ip, client_opts_t &client_opts) {
    unsigned int input_length = input.length();
+    {
+        const std::lock_guard<std::mutex> lock(worker::client_len_mutex);
+        unsigned int max_len = stats.max_client_request_len;
+        if (max_len < input_length) {
+            stats.max_client_request_len = input_length;
+        }
+    }

    //---------- Parse request - ugly but fast. Using substr exploded.
    if (input_length < 60) {  // Way too short to be anything useful
+        stats.http_error++;
        return error("GET string too short", client_opts);
    }
-
-    size_t pos = 5;  // skip 'GET /'
-
-    // Get the passkey
-    std::string passkey;
-    passkey.reserve(32);
    if (input[37] != '/') {
+        stats.http_error++;
        return error("Malformed announce", client_opts);
    }

-    for (; pos < 37; pos++) {
-        passkey.push_back(input[pos]);
-    }
-
-    pos = 38;
+    // Get the passkey: skip the 5 chars of 'GET /' and take the next 32
+    std::string passkey(input.substr(5, 32));

    // Get the action
    enum action_t {
@@ -96,6 +99,7 @@ std::string worker::work(const std::string &input, std::string &ip, client_opts_
    };
    action_t action = INVALID;

+    size_t pos = 38;
    switch (input[pos]) {
        case 'a':
            stats.announcements++;
@@ -120,7 +124,7 @@ std::string worker::work(const std::string &input, std::string &ip, client_opts_
    if (input[pos] != '?') {
        // No parameters given. Probably means we're not talking to a torrent client
        client_opts.html = true;
-        return response("Nothing to see here", client_opts);
+        return http_response("Nothing to see here", client_opts);
    }

    // Parse URL params
@@ -158,6 +162,7 @@ std::string worker::work(const std::string &input, std::string &ip, client_opts_
    ++pos;

    if (input.compare(pos, 5, "HTTP/") != 0) {
+        stats.http_error++;
        return error("Malformed HTTP request", client_opts);
    }

@@ -211,94 +216,132 @@ std::string worker::work(const std::string &input, std::string &ip, client_opts_

    if (status != OPEN) {
        return error("The tracker is temporarily unavailable.", client_opts);
-    }
-
-    if (action == INVALID) {
+    } else if (action == INVALID) {
+        stats.http_error++;
        return error("Invalid action", client_opts);
-    }
-
-    if (action == UPDATE) {
-        if (passkey == site_password) {
-            return update(params, client_opts);
-        } else {
+    } else if (action == UPDATE) {
+        if (passkey != site_password) {
+            stats.auth_error_secret++;
+            logger->error("incorrect TRACKER_SECRET received");
            return error("Authentication failure", client_opts);
        }
-    }
-
-    if (action == REPORT) {
-        if (passkey == report_password) {
-            std::lock_guard<std::mutex> ul_lock(db->user_list_mutex);
-            return report(params, users_list, client_opts, announce_interval, conf->get_uint("announce_jitter"));
-        } else {
+        return update(params, client_opts);
+    } else if (action == REPORT) {
+        if (passkey != report_password) {
+            stats.auth_error_report++;
+            logger->error("incorrect TRACKER_REPORT received");
            return error("Authentication failure", client_opts);
        }
-    }

-    // Either a scrape or an announce
-
-    std::unique_lock<std::mutex> ul_lock(db->user_list_mutex);
-    auto user_it = users_list.find(passkey);
-    if (user_it == users_list.end()) {
-        return error("Passkey not found", client_opts);
-    }
-    user_ptr u = user_it->second;
-    ul_lock.unlock();
-
-    if (action == ANNOUNCE) {
-        // Let's translate the infohash into something nice
-        // info_hash is a url encoded (hex) base 20 number
-        std::string info_hash_decoded = hex_decode(params["info_hash"]);
-        std::lock_guard<std::mutex> tl_lock(db->torrent_list_mutex);
-        auto tor = torrents_list.find(info_hash_decoded);
-        if (tor == torrents_list.end()) {
-            std::lock_guard<std::mutex> dr_lock(del_reasons_lock);
-            auto msg = del_reasons.find(info_hash_decoded);
-            if (msg != del_reasons.end()) {
-                if (msg->second.reason != -1) {
-                    return error("Unregistered torrent: " + get_del_reason(msg->second.reason), client_opts);
-                } else {
-                    return error("Unregistered torrent", client_opts);
+        std::string report_action(params["get"]);
+        if (report_action == "prom_stats") {
+            // exclude per-arena (a), destroyed merged (d), mutex (m) and extents (e) statistics
+            std::string jemalloc_stats(report_jemalloc_plain("adex", conf->get_str("report_path")));
+            return http_response(
+                report_prom_stats(jemalloc_stats.c_str()),
+                client_opts
+            );
+        } else if (report_action == "stats") {
+            return http_response(
+                report(announce_interval, conf->get_uint("announce_jitter")),
+                client_opts
+            );
+        } else if (report_action == "jemalloc") {
+            return http_response(
+                report_jemalloc_plain("adex", conf->get_str("report_path")),
+                client_opts
+            );
+        } else if (report_action == "user") {
+            std::string announce_key = params["key"];
+            if (announce_key.empty()) {
+                stats.auth_error_announce_key++;
+                logger->error("user report with no announce key");
+                return error("Announce key missing", client_opts);
+            }
+            user_ptr u;
+            {
+                // lock scope
+                std::lock_guard<std::mutex> ul_lock(db->user_list_mutex);
+                auto user_it = users_list.find(announce_key);
+                if (user_it == users_list.end()) {
+                    stats.auth_error_announce_key++;
+                    logger->error("user report announce key not found");
+                    return error("Announce key not found", client_opts);
                }
+                u = user_it->second;
+            }
+            return http_response(
+                report_user(u),
+                client_opts
+            );
+        }
+
+        stats.http_error++;
+        logger->error("unrecognized report query");
+        return error("unrecognized report query", client_opts);
+    }
+
+    // Either a scrape or an announce, find the user
+    user_ptr u;
+    {
+        // lock scope
+        std::lock_guard<std::mutex> ul_lock(db->user_list_mutex);
+        auto user_it = users_list.find(passkey);
+        if (user_it == users_list.end()) {
+            stats.auth_error_announce_key++;
+            return error("Passkey not found", client_opts);
+        }
+        u = user_it->second;
+    }
+
+    if (action == SCRAPE) {
+        return scrape(infohashes, headers, client_opts);
+    }
+
+    // Let's translate the infohash into something nice
+    // info_hash is a url encoded (hex) base 20 number
+    std::string info_hash_decoded = hex_decode(params["info_hash"]);
+    std::lock_guard<std::mutex> tl_lock(db->torrent_list_mutex);
+    auto tor = torrents_list.find(info_hash_decoded);
+    if (tor == torrents_list.end()) {
+        std::lock_guard<std::mutex> dr_lock(del_reasons_lock);
+        auto msg = del_reasons.find(info_hash_decoded);
+        if (msg != del_reasons.end()) {
+            if (msg->second.reason != -1) {
+                return error("Unregistered torrent: " + get_del_reason(msg->second.reason), client_opts);
            } else {
                return error("Unregistered torrent", client_opts);
            }
+        } else {
+            return error("Unregistered torrent", client_opts);
        }
-        return announce(input, tor->second, u, params, headers, ip, client_opts);
-    } else {
-        return scrape(infohashes, headers, client_opts);
    }
+    return announce(input, tor->second, u, params, headers, ip, client_opts);
+}
+
+const std::string bencode_warning(const std::string &message) {
+    return fmt::format(
+        "15:warning message{}:{}",
+        message.length(), message
+    );
 }

 std::string worker::announce(const std::string &input, torrent &tor, user_ptr &u, params_type &params, params_type &headers, std::string &ip, client_opts_t &client_opts) {
    cur_time = time(NULL);

    if (params["compact"] != "1") {
+        stats.client_error++;
        return error("Your client does not support compact announces", client_opts);
    }

-    int64_t left = std::max((int64_t)0, strtoint64(params["left"]));
-    int64_t uploaded = std::max((int64_t)0, strtoint64(params["uploaded"]));
-    int64_t downloaded = std::max((int64_t)0, strtoint64(params["downloaded"]));
-    int64_t corrupt = std::max((int64_t)0, strtoint64(params["corrupt"]));
-
-    int snatched = 0;                // This is the value that gets sent to the database on a snatch
-    int active = 1;                  // This is the value that marks a peer as active/inactive in the database
-    bool inserted = false;           // If we insert the peer as opposed to update
-    bool update_torrent = false;     // Whether or not we should update the torrent in the DB
-    bool completed_torrent = false;  // Whether or not the current announcement is a snatch
-    bool stopped_torrent = false;    // Was the torrent just stopped?
-    bool expire_token = false;       // Whether or not to expire a token after torrent completion
-    bool peer_changed = false;       // Whether or not the peer is new or has changed since the last announcement
-    bool invalid_ip = false;
-    bool inc_l = false, inc_s = false, dec_l = false, dec_s = false;
-    userid_t userid = u->get_id();
-
    params_type::const_iterator peer_id_iterator = params.find("peer_id");
    if (peer_id_iterator == params.end()) {
+        stats.client_error++;
        return error("No peer ID", client_opts);
    }
    const std::string peer_id = hex_decode(peer_id_iterator->second);
    if (peer_id.length() != 20) {
+        stats.client_error++;
        return error("Invalid peer ID", client_opts);
    }

@@ -312,17 +355,70 @@ std::string worker::announce(const std::string &input, torrent &tor, user_ptr &u
            }
        }
        if (!found) {
+            stats.client_error++;
            return error("Your client is not on the whitelist", client_opts);
        }
    }
    wl_lock.unlock();

-    std::stringstream peer_key_stream;
-    // "Randomize" the element order in the peer map by prefixing with a peer id byte
-    peer_key_stream << peer_id[12 + (tor.id & 7)]
-        << userid  // Include user id in the key to lower chance of peer id collisions
-        << peer_id;
-    const std::string peer_key(peer_key_stream.str());
+    int64_t uploaded = 0;
+    int64_t downloaded = 0;
+    int64_t corrupt = 0;
+    int64_t left = 0;
+    {
+        // local scope for conversions
+        params_type::const_iterator p;
+        size_t uploaded_convert = 0;
+        size_t downloaded_convert = 0;
+        size_t corrupt_convert = 0;
+        size_t left_convert = 0;
+        try {
+            p = params.find("uploaded");
+            if (p != params.end()) {
+                uploaded = std::stoull(p->second, &uploaded_convert, 10);
+            }
+            p = params.find("downloaded");
+            if (p != params.end()) {
+                downloaded = std::stoull(p->second, &downloaded_convert, 10);
+            }
+            p = params.find("corrupt");
+            if (p != params.end()) {
+                corrupt = std::stoull(p->second, &corrupt_convert, 10);
+            }
+            p = params.find("left");
+            if (p != params.end()) {
+                left = std::stoull(p->second, &left_convert, 10);
+            }
+        } catch (std::invalid_argument &er) {
+            return error(
+                fmt::format(
+                    "corrupt parameter in announce u{}/d{}/c{}/l{}",
+                    uploaded_convert, downloaded_convert, corrupt_convert, left_convert
+                ),
+                client_opts
+            );
+        } catch (std::out_of_range &er) {
+            return error(
+                fmt::format(
+                    "value out of range in announce u{}/d{}/c{}/l{}",
+                    uploaded_convert, downloaded_convert, corrupt_convert, left_convert
+                ),
+                client_opts
+            );
+        }
+    }
+
+    int snatched = 0;                // This is the value that gets sent to the database on a snatch
+    int active = 1;                  // This is the value that marks a peer as active/inactive in the database
+    bool inserted = false;           // If we insert the peer as opposed to update
+    bool update_torrent = false;     // Whether or not we should update the torrent in the DB
+    bool completed_torrent = false;  // Whether or not the current announcement is a snatch
+    bool stopped_torrent = false;    // Was the torrent just stopped?
+    bool expire_token = false;       // Whether or not to expire a token after torrent completion
+    bool peer_changed = false;       // Whether or not the peer is new or has changed since the last announcement
+    bool invalid_ip = false;
+    bool inc_l = false, inc_s = false, dec_l = false, dec_s = false;
+    userid_t userid = u->get_id();

    if (params["event"] == "completed") {
        // Don't update <snatched> here as we may decide to use other conditions later on
@@ -333,7 +429,14 @@ std::string worker::announce(const std::string &input, torrent &tor, user_ptr &u
        update_torrent = true;
        active = 0;
    }
-    peer * p;
+
+    // "Randomize" the element order in the peer map by prefixing with a peer id byte
+    // Include user id in the key to lower chance of peer id collisions
+    const std::string peer_key = fmt::format(
+        "{}{}{}",
+        peer_id[12 + (tor.id & 7)], userid, peer_id
+    );
+    peer *p;
    peer_list::iterator peer_it;
    // Insert/find the peer in the torrent list
    if (left > 0) {
@@ -440,19 +543,19 @@ std::string worker::announce(const std::string &input, torrent &tor, user_ptr &u
            } else if (tor.free_torrent == FREE || sit != tor.tokened_users.end()) {
                if (sit != tor.tokened_users.end()) {
                    expire_token = true;
-                    std::stringstream record;
-                    record << '(' << userid << ',' << tor.id << ',' << downloaded_change << ')';
-                    std::string record_str = record.str();
-                    db->record_token(record_str);
+                    db->record_token(fmt::format(
+                        "({},{},{})",
+                        userid, tor.id, downloaded_change
+                    ));
                }
                downloaded_change = 0;
            }

            if (uploaded_change || downloaded_change) {
-                std::stringstream record;
-                record << '(' << userid << ',' << uploaded_change << ',' << downloaded_change << ')';
-                std::string record_str = record.str();
-                db->record_user(record_str);
+                db->record_user(fmt::format(
+                    "({},{},{})",
+                    userid, uploaded_change, downloaded_change
+                ));
            }
        }
    }
@@ -475,12 +578,12 @@ std::string worker::announce(const std::string &input, torrent &tor, user_ptr &u
        }
    }

-    uint16_t port = strtoint32(params["port"]) & 0xFFFF;
+    uint16_t port = atoi(params["port"].c_str()) & 0xFFFF;
    // Generate compact ip/port string
    if (inserted || port != p->port || ip != p->ip) {
        p->port = port;
        p->ip = ip;
-        p->ip_port = "";
+        p->ip_port.clear();
        char x = 0;
        for (size_t pos = 0, end = ip.length(); pos < end; pos++) {
            if (ip[pos] == '.') {
@@ -514,19 +617,19 @@ std::string worker::announce(const std::string &input, torrent &tor, user_ptr &u
    // Add peer data to the database
    std::stringstream record;
    if (peer_changed) {
-        record << '(' << userid << ',' << tor.id << ',' << active << ',' << uploaded << ',' << downloaded << ',' << upspeed << ',' << downspeed << ',' << left << ',' << corrupt << ',' << (cur_time - p->first_announced) << ',' << p->announces << ',';
-        std::string record_str = record.str();
-        std::string record_ip;
-        if (u->is_protected()) {
-            record_ip = "";
-        } else {
-            record_ip = ip;
-        }
-        db->record_peer(record_str, record_ip, peer_id, headers["user-agent"]);
+        db->record_peer(fmt::format(
+            "({},{},{},{},{},{},{}" ",{},{},{},{}" ",{},{}" ",{},{})",
+            userid, tor.id, active, uploaded, downloaded, upspeed, downspeed,
+            left, corrupt, cur_time - p->first_announced, p->announces,
+            u->is_protected() ? "'0.0.0.0'" : db->quote(ip), db->quote(peer_id),
+            db->quote(headers["user-agent"].substr(0, 51)), time(NULL)
+        ));
    } else {
-        record << '(' << userid << ',' << tor.id << ',' << (cur_time - p->first_announced) << ',' << p->announces << ',';
-        std::string record_str = record.str();
-        db->record_peer(record_str, peer_id);
+        db->record_peer_light(fmt::format(
+            "({},{},{},{}" ",{},{})",
+            userid, tor.id, cur_time - p->first_announced, p->announces,
+            db->quote(peer_id), time(NULL)
+        ));
    }

    // Select peers!
@@ -535,7 +638,7 @@ std::string worker::announce(const std::string &input, torrent &tor, user_ptr &u
    if (param_numwant == params.end()) {
        numwant = numwant_limit;
    } else {
-        numwant = std::min((int32_t)numwant_limit, strtoint32(param_numwant->second));
+        numwant = std::min(numwant_limit, atoi(param_numwant->second.c_str()));
    }

    if (stopped_torrent) {
@@ -550,16 +653,10 @@ std::string worker::announce(const std::string &input, torrent &tor, user_ptr &u
        update_torrent = true;
        tor.completed++;

-        std::stringstream record;
-        std::string record_ip;
-        if (u->is_protected()) {
-            record_ip = "";
-        } else {
-            record_ip = ip;
-        }
-        record << '(' << userid << ',' << tor.id << ',' << cur_time;
-        std::string record_str = record.str();
-        db->record_snatch(record_str, record_ip);
+        db->record_snatch(fmt::format(
+            "({},{},{},{})",
+            userid, tor.id, cur_time, u->is_protected() ? "'0.0.0.0'" : db->quote(ip)
+        ));

        // User is a seeder now!
        if (!inserted) {
@@ -697,39 +794,38 @@ std::string worker::announce(const std::string &input, torrent &tor, user_ptr &u

    // Putting this after the peer deletion gives us accurate swarm sizes
    if (update_torrent || tor.last_flushed + 3600 < cur_time) {
+        db->record_torrent(fmt::format(
+            "({},{},{},{},{})",
+            tor.id, tor.seeders.size(), tor.leechers.size(), snatched, tor.balance
+        ));
        tor.last_flushed = cur_time;
-
-        std::stringstream record;
-        record << '(' << tor.id << ',' << tor.seeders.size() << ',' << tor.leechers.size() << ',' << snatched << ',' << tor.balance << ')';
-        std::string record_str = record.str();
-        db->record_torrent(record_str);
    }

    if (!u->can_leech() && left > 0) {
        return error("Access denied, leeching forbidden", client_opts);
    }

-    std::string output = "d8:completei";
+    std::string output;
    output.reserve(350);
-    output += inttostr(tor.seeders.size());
-    output += "e10:downloadedi";
-    output += inttostr(tor.completed);
-    output += "e10:incompletei";
-    output += inttostr(tor.leechers.size());
-    output += "e8:intervali";
-    output += inttostr(announce_interval + jitter(randgen));
-    output += "e12:min intervali";
-    output += inttostr(announce_interval);
-    output += "e5:peers";
+    output = fmt::format(
+        "d8:completei{}"
+        "e10:downloadedi{}"
+        "e10:incompletei{}"
+        "e8:intervali{}"
+        "e12:min intervali{}",
+        tor.seeders.size(),
+        tor.completed,
+        tor.leechers.size(),
+        announce_interval + jitter(randgen),
+        announce_interval
+    );
    if (peers.length() == 0) {
-        output += "0:";
+        output += "e5:peers0:";
    } else {
-        output += inttostr(peers.length());
-        output += ":";
-        output += peers;
+        output += fmt::format("e5:peers{}:{}", peers.length(), peers);
    }
    if (invalid_ip) {
-        output += warning("Illegal character found in IP address. IPv6 is not supported");
+        output += bencode_warning("Illegal character found in IP address. IPv6 is not supported");
    }
    output += 'e';

@@ -740,14 +836,13 @@ std::string worker::announce(const std::string &input, torrent &tor, user_ptr &u
    /*if (headers["accept-encoding"].find("gzip") != std::string::npos) {
        client_opts.gzip = true;
    }*/
-    return response(output, client_opts);
+    return http_response(output, client_opts);
 }

 std::string worker::scrape(const std::list<std::string> &infohashes, params_type &headers, client_opts_t &client_opts) {
    std::string output = "d5:filesd";
    for (std::list<std::string>::const_iterator i = infohashes.begin(); i != infohashes.end(); ++i) {
-        std::string infohash = *i;
-        infohash = hex_decode(infohash);
+        std::string infohash(hex_decode(*i));

        torrent_list::iterator tor = torrents_list.find(infohash);
        if (tor == torrents_list.end()) {
@@ -755,50 +850,57 @@ std::string worker::scrape(const std::list<std::string> &infohashes, params_type
        }
        torrent *t = &(tor->second);

-        output += inttostr(infohash.length());
-        output += ':';
-        output += infohash;
-        output += "d8:completei";
-        output += inttostr(t->seeders.size());
-        output += "e10:incompletei";
-        output += inttostr(t->leechers.size());
-        output += "e10:downloadedi";
-        output += inttostr(t->completed);
-        output += "ee";
+        output += fmt::format(
+            "{}:{}"
+            "d8:completei{}"
+            "e10:incompletei{}"
+            "e10:downloadedi{}ee",
+            infohash.length(), infohash,
+            t->seeders.size(),
+            t->leechers.size(),
+            t->completed
+        );
    }
    output += "ee";
    if (headers["accept-encoding"].find("gzip") != std::string::npos) {
        client_opts.gzip = true;
    }
-    return response(output, client_opts);
+    return http_response(output, client_opts);
 }

 // TODO: Restrict to local IPs
 std::string worker::update(params_type &params, client_opts_t &client_opts) {
-    if (params["action"] == "change_passkey") {
+    std::string action(params["action"]);
+    if (action == "change_passkey") {
        std::string oldpasskey = params["oldpasskey"];
        std::string newpasskey = params["newpasskey"];
        std::lock_guard<std::mutex> ul_lock(db->user_list_mutex);
        auto u = users_list.find(oldpasskey);
        if (u == users_list.end()) {
-            logger->warn("No user with passkey " + oldpasskey + " exists when attempting to change passkey to " + newpasskey);
+            logger->warn(
+                "user {} not found when attempting to change passkey to {}",
+                oldpasskey, newpasskey
+            );
        } else {
            users_list[newpasskey] = u->second;
            users_list.erase(oldpasskey);
-            logger->info("Changed passkey from " + oldpasskey + " to " + newpasskey + " for user " + std::to_string(u->second->get_id()));
+            logger->info(
+                "user {} changed passkey from {} to {}",
+                u->second->get_id(), oldpasskey, newpasskey
+            );
        }
-    } else if (params["action"] == "add_torrent") {
+    } else if (action == "add_torrent") {
        torrent *t;
-        std::string info_hash = params["info_hash"];
-        info_hash = hex_decode(info_hash);
+        std::string info_hash_hex(params["info_hash"]);
+        std::string info_hash(hex_decode(info_hash_hex));
        std::lock_guard<std::mutex> tl_lock(db->torrent_list_mutex);
        auto i = torrents_list.find(info_hash);
        if (i == torrents_list.end()) {
            t = &torrents_list[info_hash];
-            t->id = static_cast<torid_t>(strtoint32(params["id"]));
+            t->id = static_cast<torid_t>(atoi(params["id"].c_str()));
            t->balance = 0;
            t->completed = 0;
-            t->last_selected_seeder = "";
+            t->last_selected_seeder.clear();
        } else {
            t = &i->second;
        }
@@ -809,10 +911,13 @@ std::string worker::update(params_type &params, client_opts_t &client_opts) {
        } else {
            t->free_torrent = NEUTRAL;
        }
-        logger->info("Added torrent " + std::to_string(t->id) + ". FL: " + std::to_string(t->free_torrent) + " " + params["freetorrent"]);
-    } else if (params["action"] == "update_torrent") {
-        std::string info_hash = params["info_hash"];
-        info_hash = hex_decode(info_hash);
+        logger->info(
+            "added torrent {} with FL {} {}",
+            t->id, t->free_torrent, params["freetorrent"]
+        );
+    } else if (action == "update_torrent") {
+        std::string info_hash_hex(params["info_hash"]);
+        std::string info_hash(hex_decode(info_hash_hex));
        freetype fl;
        if (params["freetorrent"] == "0") {
            fl = NORMAL;
@@ -825,11 +930,17 @@ std::string worker::update(params_type &params, client_opts_t &client_opts) {
        auto torrent_it = torrents_list.find(info_hash);
        if (torrent_it != torrents_list.end()) {
            torrent_it->second.free_torrent = fl;
-            logger->info("Updated torrent " + std::to_string(torrent_it->second.id) + " to FL " + std::to_string(fl));
+            logger->info(
+                "modify torrent {} to FL {}",
+                torrent_it->second.id, fl
+            );
        } else {
-            logger->warn("Failed to find torrent " + std::string(info_hash) + " to FL " + std::to_string(fl));
+            logger->warn(
+                "failed to find torrent {} to FL {}",
+                info_hash_hex, fl
+            );
        }
-    } else if (params["action"] == "update_torrents") {
+    } else if (action == "update_torrents") {
        // Each decoded infohash is exactly 20 characters long.
        std::string info_hashes = params["info_hashes"];
        info_hashes = hex_decode(info_hashes);
@@ -847,34 +958,48 @@ std::string worker::update(params_type &params, client_opts_t &client_opts) {
            auto torrent_it = torrents_list.find(info_hash);
            if (torrent_it != torrents_list.end()) {
                torrent_it->second.free_torrent = fl;
-                logger->info("Updated torrent " + std::to_string(torrent_it->second.id) + " to FL " + std::to_string(fl));
+                logger->info(
+                    "bulk modify torrent {} to FL {}",
+                    torrent_it->second.id, fl
+                );
            } else {
-                logger->warn("Failed to find torrent " + info_hash + " to FL " + std::to_string(fl));
+                logger->warn(
+                    "bulk modify cannot find torrent {} to FL {}",
+                    info_hash, fl
+                );
            }
        }
-    } else if (params["action"] == "add_token") {
-        std::string info_hash = hex_decode(params["info_hash"]);
+    } else if (action == "add_token") {
+        std::string info_hash_hex(params["info_hash"]);
+        std::string info_hash(hex_decode(info_hash_hex));
        int userid = atoi(params["userid"].c_str());
        std::lock_guard<std::mutex> tl_lock(db->torrent_list_mutex);
        auto torrent_it = torrents_list.find(info_hash);
        if (torrent_it != torrents_list.end()) {
            torrent_it->second.tokened_users.insert(userid);
        } else {
-            logger->warn("Failed to find torrent to add a token for user " + std::to_string(userid));
+            logger->warn(
+                "user {} failed to find torrent {} to add token",
+                userid, info_hash_hex
+            );
        }
-    } else if (params["action"] == "remove_token") {
-        std::string info_hash = hex_decode(params["info_hash"]);
+    } else if (action == "remove_token") {
+        std::string info_hash_hex(params["info_hash"]);
+        std::string info_hash(hex_decode(info_hash_hex));
        int userid = atoi(params["userid"].c_str());
        std::lock_guard<std::mutex> tl_lock(db->torrent_list_mutex);
        auto torrent_it = torrents_list.find(info_hash);
        if (torrent_it != torrents_list.end()) {
            torrent_it->second.tokened_users.erase(userid);
        } else {
-            logger->warn("Failed to find torrent " + info_hash + " to remove token for user " + std::to_string(userid));
+            logger->warn(
+                "user {} failed to find torrent {} to remove token",
+                userid, info_hash_hex
+            );
        }
-    } else if (params["action"] == "delete_torrent") {
-        std::string info_hash = params["info_hash"];
-        info_hash = hex_decode(info_hash);
+    } else if (action == "delete_torrent") {
+        std::string info_hash_hex(params["info_hash"]);
+        std::string info_hash(hex_decode(info_hash_hex));
        int reason = -1;
        auto reason_it = params.find("reason");
        if (reason_it != params.end()) {
@@ -882,8 +1007,12 @@ std::string worker::update(params_type &params, client_opts_t &client_opts) {
        }
        std::lock_guard<std::mutex> tl_lock(db->torrent_list_mutex);
        auto torrent_it = torrents_list.find(info_hash);
-        if (torrent_it != torrents_list.end()) {
-            logger->info("Deleting torrent " + std::to_string(torrent_it->second.id) + " for the reason '" + get_del_reason(reason) + "'");
+        if (torrent_it == torrents_list.end()) {
+            logger->warn(
+                "torrent {} not found to delete",
+                info_hash_hex
+            );
+        } else {
            stats.leechers -= torrent_it->second.leechers.size();
            stats.seeders -= torrent_it->second.seeders.size();
            for (auto &p : torrent_it->second.leechers) {
@@ -898,33 +1027,44 @@ std::string worker::update(params_type &params, client_opts_t &client_opts) {
            msg.time = time(NULL);
            del_reasons[info_hash] = msg;
            torrents_list.erase(torrent_it);
-        } else {
-            logger->warn("Failed to find torrent " + bintohex(info_hash) + " to delete ");
+            logger->info(
+                "torrent {} deleted for reason '{}'",
+                torrent_it->second.id, get_del_reason(reason)
+            );
        }
-    } else if (params["action"] == "add_user") {
+    } else if (action == "add_user") {
        std::string passkey = params["passkey"];
-        userid_t userid = strtoint32(params["id"]);
+        userid_t userid = atoi(params["id"].c_str());
        std::lock_guard<std::mutex> ul_lock(db->user_list_mutex);
        auto u = users_list.find(passkey);
        if (u == users_list.end()) {
            bool protect_ip = params["visible"] == "0";
            user_ptr tmp_user = std::make_shared<user>(userid, true, protect_ip);
            users_list.insert(std::pair<std::string, user_ptr>(passkey, tmp_user));
-            logger->info("Added user " + passkey + " with id " + std::to_string(userid));
+            logger->info(
+                "added user {} via {}",
+                userid, passkey
+            );
        } else {
-            logger->warn("Tried to add already known user " + passkey + " with id " + std::to_string(userid));
            u->second->set_deleted(false);
+            logger->warn(
+                "ignored add user {} via {}",
+                userid, passkey
+            );
        }
-    } else if (params["action"] == "remove_user") {
+    } else if (action == "remove_user") {
        std::string passkey = params["passkey"];
        std::lock_guard<std::mutex> ul_lock(db->user_list_mutex);
        auto u = users_list.find(passkey);
        if (u != users_list.end()) {
-            logger->info("Removed user " + passkey + " with id " + std::to_string(u->second->get_id()));
+            logger->info(
+                "removed user {} via {}",
+                u->second->get_id(), passkey
+            );
            u->second->set_deleted(true);
            users_list.erase(u);
        }
-    } else if (params["action"] == "remove_users") {
+    } else if (action == "remove_users") {
        // Each passkey is exactly 32 characters long.
        std::string passkeys = params["passkeys"];
        std::lock_guard<std::mutex> ul_lock(db->user_list_mutex);
@@ -932,12 +1072,15 @@ std::string worker::update(params_type &params, client_opts_t &client_opts) {
            std::string passkey = passkeys.substr(pos, 32);
            auto u = users_list.find(passkey);
            if (u != users_list.end()) {
-                logger->info("Removed user " + passkey);
+                logger->info(
+                    "bulk remove user {}",
+                    passkey
+                );
                u->second->set_deleted(true);
                users_list.erase(passkey);
            }
        }
-    } else if (params["action"] == "update_user") {
+    } else if (action == "update_user") {
        std::string passkey = params["passkey"];
        bool can_leech = true;
        bool protect_ip = false;
@@ -948,20 +1091,29 @@ std::string worker::update(params_type &params, client_opts_t &client_opts) {
            protect_ip = true;
        }
        std::lock_guard<std::mutex> ul_lock(db->user_list_mutex);
-        user_list::iterator i = users_list.find(passkey);
-        if (i == users_list.end()) {
-            logger->warn("No user with passkey " + passkey + " found when attempting to change leeching status!");
+        user_list::iterator u = users_list.find(passkey);
+        if (u == users_list.end()) {
+            logger->warn(
+                "user {} not found for update",
+                passkey
+            );
        } else {
-            i->second->set_protected(protect_ip);
-            i->second->set_leechstatus(can_leech);
-            logger->info("Updated user " + passkey);
+            u->second->set_protected(protect_ip);
+            u->second->set_leechstatus(can_leech);
+            logger->info(
+                "updated user {} via {} leech={} protect_ip={}",
+                u->second->get_id(), passkey, can_leech, protect_ip
+            );
        }
-    } else if (params["action"] == "add_whitelist") {
+    } else if (action == "add_whitelist") {
        std::string peer_id = params["peer_id"];
        std::lock_guard<std::mutex> wl_lock(db->whitelist_mutex);
        whitelist.push_back(peer_id);
-        logger->info("Whitelisted " + peer_id);
-    } else if (params["action"] == "remove_whitelist") {
+        logger->info(
+            "whitelisted client {}",
+            peer_id
+        );
+    } else if (action == "remove_whitelist") {
        std::string peer_id = params["peer_id"];
        std::lock_guard<std::mutex> wl_lock(db->whitelist_mutex);
        for (unsigned int i = 0; i < whitelist.size(); i++) {
@@ -970,8 +1122,11 @@ std::string worker::update(params_type &params, client_opts_t &client_opts) {
                break;
            }
        }
-        logger->info("De-whitelisted " + peer_id);
-    } else if (params["action"] == "edit_whitelist") {
+        logger->info(
+            "dewhitelisted cient {}",
+            peer_id
+        );
+    } else if (action == "edit_whitelist") {
        std::string new_peer_id = params["new_peer_id"];
        std::string old_peer_id = params["old_peer_id"];
        std::lock_guard<std::mutex> wl_lock(db->whitelist_mutex);
@@ -982,24 +1137,35 @@ std::string worker::update(params_type &params, client_opts_t &client_opts) {
            }
        }
        whitelist.push_back(new_peer_id);
-        logger->info("Edited whitelist item from " + old_peer_id + " to " + new_peer_id);
-    } else if (params["action"] == "update_announce_interval") {
+        logger->info(
+            "modified whitelist client from {} to {}",
+            old_peer_id, new_peer_id
+        );
+    } else if (action == "update_announce_interval") {
+        uint32_t prev = conf->get_uint("announce_interval");
        const std::string interval = params["new_announce_interval"];
        conf->set("announce_interval", interval);
        announce_interval = conf->get_uint("announce_interval");
-        logger->info("Edited announce interval to " + std::to_string(announce_interval));
-    } else if (params["action"] == "update_announce_jitter") {
+        logger->info(
+            "modified announce interval from {} to {}",
+            prev, announce_interval
+        );
+    } else if (action == "update_announce_jitter") {
+        uint32_t prev = conf->get_uint("announce_jitter");
        const std::string new_jitter = params["new_announce_jitter"];
        conf->set("announce_jitter", new_jitter);
        jitter = std::uniform_int_distribution<int>(0, conf->get_uint("announce_jitter"));
-        logger->info("Edited announce jitter to " + std::to_string(conf->get_uint("announce_jitter")));
-    } else if (params["action"] == "info_torrent") {
-        std::stringstream output;
+        logger->info(
+            "modified announce jitter from {} to {}",
+            prev, conf->get_uint("announce_jitter")
+        );
+    } else if (action == "info_torrent") {
        std::string info_hash_hex = params["info_hash"];
        std::string info_hash = hex_decode(info_hash_hex);
        std::lock_guard<std::mutex> tl_lock(db->torrent_list_mutex);
        auto torrent_it = torrents_list.find(info_hash);
-        output << "{\"hash\":" << std::string(info_hash_hex);
+        std::ostringstream output;
+        output << "{\"hash\":" << info_hash_hex;
        if (torrent_it != torrents_list.end()) {
            output << ",\"id\":" << std::to_string(torrent_it->second.id)
                << ",\"free\":" << std::to_string(torrent_it->second.free_torrent);
@@ -1007,9 +1173,9 @@ std::string worker::update(params_type &params, client_opts_t &client_opts) {
            output << ",\"fail\":1";
        }
        output << "}\n";
-        return response(output.str(), client_opts);
+        return http_response(output.str(), client_opts);
    }
-    return response("success", client_opts);
+    return http_response("success", client_opts);
 }

 peer_list::iterator worker::add_peer(peer_list &peer_list, const std::string &peer_key) {
@@ -1078,8 +1244,10 @@ void worker::reap_peers() {
        stats.leechers -= reaped_l;
        stats.seeders -= reaped_s;
    }
-    logger->info("Reaped " + std::to_string(reaped_l) + " leechers and " + std::to_string(reaped_s)
-                 + " seeders. Reset " + std::to_string(cleared_torrents) + " torrents");
+    logger->info(
+        "Reaped {} leechers and {} seeders. Reset {} torrents",
+        reaped_l, reaped_s, cleared_torrents
+    );
 }

 void worker::reap_del_reasons() {
@@ -1097,7 +1265,10 @@ void worker::reap_del_reasons() {
        }
        ++it;
    }
-    logger->info("Reaped " + std::to_string(reaped) + " del reasons");
+    logger->info(
+        "Reaped {} del reasons",
+        reaped
+    );
 }

 std::string worker::get_del_reason(int code) {
@@ -1172,7 +1343,7 @@ std::string worker::get_del_reason(int code) {
            return "Audience Recording";
            break;
        default:
-            return "";
+            return std::string();
            break;
    }
 }
@@ -34,11 +34,12 @@ class worker {
    std::shared_ptr<spdlog::logger> logger;
    std::mt19937 randgen;
    std::uniform_int_distribution<int> jitter;
+    static std::mutex client_len_mutex;

    unsigned int announce_interval;
    unsigned int del_reason_lifetime;
    unsigned int peers_timeout;
-    unsigned int numwant_limit;
+    int numwant_limit;
    bool keepalive_enabled;
    std::string site_password;
    std::string report_password;
Author	SHA1	Message	Date
Spine	021df7fc7a	make it work	2024-03-28 23:49:24 +01:00
strangeways	0c8b803b1e	Reduce code duplication in db.cpp, use builtin formatting in spdlog when logging, remove unnecessary usages of empty C-strings	2024-03-24 12:25:08 +01:00
Spine	d4aaff7bb5	refactor tracker report functionality	2024-03-10 21:13:13 +01:00
Spine	37685bd8da	add resource usage to grafana and report endpoints	2024-03-10 21:12:45 +01:00