db_state_default = {"closed": None, "conn": None, "ctx": None, "transactions": None}
db_state = ContextVar("db_state", default=db_state_default.copy())


class PeeweeConnectionState(peewee._ConnectionState):
    def __init__(self, **kwargs):
        super().__setattr__("_state", db_state)
        super().__init__(**kwargs)

    def __setattr__(self, name, value):
        self._state.get()[name] = value

    def __getattr__(self, name):

database.db.create_tables([models.User, models.Item])
database.db.close()

app = FastAPI()

sleep_time = 10


async def reset_db_state():
    database.db._state._state.set(db_state_default.copy())
    database.db._state.reset()


def get_db(db_state=Depends(reset_db_state)):
    try:
        database.db.connect()
        yield
    finally:
        if not database.db.is_closed():
            database.db.close()

    private static List<String> visitAll(
            Collection<Vertex> children, Map<Vertex, DfsState> stateMap, List<String> list) {
        for (Vertex v : children) {
            DfsState state = stateMap.putIfAbsent(v, DfsState.VISITING);
            if (state == null) {
                visitAll(v.children, stateMap, list);
                stateMap.put(v, DfsState.VISITED);
                list.add(v.label);
            }
        }

                DfsState state = stateMap.putIfAbsent(v, DfsState.VISITING);
                if (state == null) {
                    cycle.addLast(v);
                    List<String> ret = visitCycle(graph, graph.get(v), stateMap, cycle);
                    if (ret != null) {
                        return ret;
                    }
                    cycle.removeLast();
                    stateMap.put(v, DfsState.VISITED);

pkg database/sql, type DBStats struct, Idle int
pkg database/sql, type DBStats struct, InUse int
pkg database/sql, type DBStats struct, MaxIdleClosed int64
pkg database/sql, type DBStats struct, MaxLifetimeClosed int64
pkg database/sql, type DBStats struct, MaxOpenConnections int
pkg database/sql, type DBStats struct, WaitCount int64
pkg database/sql, type DBStats struct, WaitDuration time.Duration

pkg crypto/x509, type RevocationList struct, ThisUpdate time.Time
pkg database/sql, method (*DB) SetConnMaxIdleTime(time.Duration)
pkg database/sql, method (*Row) Err() error
pkg database/sql, type DBStats struct, MaxIdleTimeClosed int64
pkg database/sql/driver, type Validator interface { IsValid }
pkg database/sql/driver, type Validator interface, IsValid() bool
pkg debug/pe, const IMAGE_DLLCHARACTERISTICS_APPCONTAINER = 4096

pkg crypto/x509/pkix, type Name struct, ExtraNames []AttributeTypeAndValue
pkg database/sql, method (*DB) Stats() DBStats
pkg database/sql, type DBStats struct
pkg database/sql, type DBStats struct, OpenConnections int
pkg debug/dwarf, const ClassAddress = 1
pkg debug/dwarf, const ClassAddress Class
pkg debug/dwarf, const ClassBlock = 2
pkg debug/dwarf, const ClassBlock Class

pkg syscall (linux-386), type TCPInfo struct, Advmss uint32
pkg syscall (linux-386), type TCPInfo struct, Ato uint32
pkg syscall (linux-386), type TCPInfo struct, Backoff uint8
pkg syscall (linux-386), type TCPInfo struct, Ca_state uint8
pkg syscall (linux-386), type TCPInfo struct, Fackets uint32
pkg syscall (linux-386), type TCPInfo struct, Last_ack_recv uint32
pkg syscall (linux-386), type TCPInfo struct, Last_ack_sent uint32

pkg syscall (linux-arm-cgo), type TCPInfo struct, Ato uint32
pkg syscall (linux-arm-cgo), type TCPInfo struct, Backoff uint8
pkg syscall (linux-arm-cgo), type TCPInfo struct, Ca_state uint8
pkg syscall (linux-arm-cgo), type TCPInfo struct, Fackets uint32
pkg syscall (linux-arm-cgo), type TCPInfo struct, Last_ack_recv uint32
pkg syscall (linux-arm-cgo), type TCPInfo struct, Last_ack_sent uint32