### Top-level application { #top-level-application }

First, create the main, top-level, **FastAPI** application, and its *path operations*:

{* ../../docs_src/sub_applications/tutorial001_py310.py hl[3, 6:8] *}

### Sub-application { #sub-application }

)

type Tracer struct {
	Logger logger.Interface
	Test   func(ctx context.Context, begin time.Time, fc func() (sql string, rowsAffected int64), err error)
}

func (S Tracer) LogMode(level logger.LogLevel) logger.Interface {
	return S.Logger.LogMode(level)
}

func (S Tracer) Info(ctx context.Context, s string, i ...interface{}) {
	S.Logger.Info(ctx, s, i...)
}

func (S Tracer) Warn(ctx context.Context, s string, i ...interface{}) {

import java.net.SocketException
import java.util.concurrent.ConcurrentHashMap
import java.util.concurrent.Executors
import java.util.concurrent.TimeUnit
import java.util.concurrent.atomic.AtomicInteger
import java.util.logging.Level
import java.util.logging.Logger
import okhttp3.TestUtil.threadFactory
import okhttp3.internal.and
import okhttp3.internal.closeQuietly
import okhttp3.internal.threadName
import okio.Buffer
import okio.BufferedSink

 */
public class BaseSlf4jConfiguration implements Slf4jConfiguration {
    private static final Logger LOGGER = LoggerFactory.getLogger(BaseSlf4jConfiguration.class);

    @Override
    public void setRootLoggerLevel(Level level) {
        LOGGER.warn("setRootLoggerLevel: operation not supported");
    }

    @Override
    public void activate() {
        LOGGER.warn("activate(): operation not supported");
    }

import com.google.common.annotations.Beta;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import java.io.Flushable;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * Utility methods for working with {@link Flushable} objects.
 *
 * @author Michael Lancaster
 * @since 1.0
 */
@J2ktIncompatible
@GwtIncompatible

    interceptor.level = HttpLoggingInterceptor.Level.BASIC
    var level: HttpLoggingInterceptor.Level = interceptor.level
    interceptor.intercept(newInterceptorChain())
  }

  @Test
  fun httpLoggingInterceptorLevel() {
    val none: HttpLoggingInterceptor.Level = HttpLoggingInterceptor.Level.NONE
    val basic: HttpLoggingInterceptor.Level = HttpLoggingInterceptor.Level.BASIC

  @Deprecated(
    message = "moved to val",
    replaceWith = ReplaceWith(expression = "address"),
    level = DeprecationLevel.ERROR,
  )
  fun address(): Address = address

  @JvmName("-deprecated_proxy")
  @Deprecated(
    message = "moved to val",
    replaceWith = ReplaceWith(expression = "proxy"),
    level = DeprecationLevel.ERROR,
  )
  fun proxy(): Proxy = proxy

  @JvmName("-deprecated_socketAddress")

*----------+--------------------------------------------+-----------------------+
||         || system level                              || user level 
*----------+--------------------------------------------+-----------------------+
|| POSIX   | <<</etc/mavenrc>>>\
||         | <<</usr/local/etc/mavenrc>>> (since 3.8.2) | <<<$HOME/.mavenrc>>> 

     * This message is shown to users on the main search page.
     */
    @Size(max = 3000)
    public String notificationSearchTop;

    /**
     * System log level for controlling log verbosity.
     * Controls the level of detail in system log messages.
     */
    @Size(max = 10)
    public String logLevel;

    /**
     * Storage service endpoint URL for cloud storage integration.

    protected ThreadDumpUtil() {
        // noop
    }

    /**
     * Prints thread dump information to the logger at INFO level.
     */
    public static void printThreadDump() {
        processThreadDump(logger::info);
    }

    /**
     * Prints thread dump information to the logger at WARN level.
     */
    public static void printThreadDumpAsWarn() {
        processThreadDump(logger::warn);
    }

    /**