content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.javaagent.instrumentation.vertx.v5_0.sql;
  
  import static io.opentelemetry.javaagent.extension.matcher.AgentElementMatchers.hasClassesNamed;
  import static io.opentelemetry.javaagent.extension.matcher.AgentElementMatchers.implementsInterface;
  import static io.opentelemetry.javaagent.instrumentation.vertx.sql.VertxSqlClientUtil.getPoolSqlConnectOptions;
  import static io.opentelemetry.javaagent.instrumentation.vertx.sql.VertxSqlClientUtil.setPoolConnectOptions;
  import static io.opentelemetry.javaagent.instrumentation.vertx.sql.VertxSqlClientUtil.setSqlConnectOptions;
  import static io.opentelemetry.javaagent.instrumentation.vertx.sql.VertxSqlClientUtil.wrapContext;
  import static io.opentelemetry.javaagent.instrumentation.vertx.v5_0.sql.VertxSqlClientSingletons.attachConnectOptions;
  import static net.bytebuddy.matcher.ElementMatchers.isStatic;
  import static net.bytebuddy.matcher.ElementMatchers.named;
  import static net.bytebuddy.matcher.ElementMatchers.returns;
  import static net.bytebuddy.matcher.ElementMatchers.takesArgument;
  import static net.bytebuddy.matcher.ElementMatchers.takesArguments;
  import static net.bytebuddy.matcher.ElementMatchers.takesNoArguments;
  
  import io.opentelemetry.instrumentation.api.util.VirtualField;
  import io.opentelemetry.javaagent.bootstrap.CallDepth;
  import io.opentelemetry.javaagent.extension.instrumentation.TypeInstrumentation;
  import io.opentelemetry.javaagent.extension.instrumentation.TypeTransformer;
  import io.vertx.core.Future;
  import io.vertx.sqlclient.Pool;
  import io.vertx.sqlclient.SqlConnectOptions;
  import io.vertx.sqlclient.SqlConnection;
  import net.bytebuddy.asm.Advice;
  import net.bytebuddy.description.type.TypeDescription;
  import net.bytebuddy.matcher.ElementMatcher;
  
  public class PoolInstrumentation implements TypeInstrumentation {
  
    @Override
    public ElementMatcher<ClassLoader> classLoaderOptimization() {
      return hasClassesNamed("io.vertx.sqlclient.Pool");
    }
  
    @Override
    public ElementMatcher<TypeDescription> typeMatcher() {
      return implementsInterface(named("io.vertx.sqlclient.Pool"));
    }
  
    @Override
    public void transform(TypeTransformer transformer) {
      transformer.applyAdviceToMethod(
          named("pool")
              .and(isStatic())
              .and(takesArguments(3))
              .and(takesArgument(1, named("io.vertx.sqlclient.SqlConnectOptions")))
              .and(returns(named("io.vertx.sqlclient.Pool"))),
          PoolInstrumentation.class.getName() + "$PoolAdvice");
  
      transformer.applyAdviceToMethod(
          named("getConnection").and(takesNoArguments()).and(returns(named("io.vertx.core.Future"))),
          PoolInstrumentation.class.getName() + "$GetConnectionAdvice");
    }
  
    @SuppressWarnings("unused")
    public static class PoolAdvice {
      @Advice.OnMethodEnter(suppress = Throwable.class)
      public static void onEnter(
          @Advice.Argument(1) SqlConnectOptions sqlConnectOptions,
          @Advice.Local("otelCallDepth") CallDepth callDepth) {
        callDepth = CallDepth.forClass(Pool.class);
        if (callDepth.getAndIncrement() > 0) {
          return;
        }
  
        // set connection options to ThreadLocal, they will be read in SqlClientBase constructor
        setSqlConnectOptions(sqlConnectOptions);
      }
  
      @Advice.OnMethodExit(suppress = Throwable.class)
      public static void onExit(
          @Advice.Return Pool pool,
          @Advice.Argument(1) SqlConnectOptions sqlConnectOptions,
          @Advice.Local("otelCallDepth") CallDepth callDepth) {
        if (callDepth.decrementAndGet() > 0) {
          return;
        }
  
        VirtualField<Pool, SqlConnectOptions> virtualField =
            VirtualField.find(Pool.class, SqlConnectOptions.class);
        virtualField.set(pool, sqlConnectOptions);
  
        setPoolConnectOptions(pool, sqlConnectOptions);
        setSqlConnectOptions(null);
      }
    }
  
    @SuppressWarnings("unused")
    public static class GetConnectionAdvice {
      @Advice.OnMethodExit(suppress = Throwable.class)
      public static void onExit(
          @Advice.This Pool pool, @Advice.Return(readOnly = false) Future<SqlConnection> future) {
        // copy connect options stored on pool to new connection
        SqlConnectOptions sqlConnectOptions = getPoolSqlConnectOptions(pool);
  
        future = attachConnectOptions(future, sqlConnectOptions);
        future = wrapContext(future);
      }
    }
  }
  