log4j-api-kotlin-benchmark/src/main/kotlin/org/apache/logging/log4j/kotlin/benchmark/LoggingBenchmark.kt

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache license, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the license for the specific language governing permissions and
 * limitations under the license.
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package org.apache.logging.log4j.kotlin.benchmark

import org.apache.logging.log4j.LogManager
import org.apache.logging.log4j.Logger
import org.apache.logging.log4j.kotlin.Logging
import org.apache.logging.log4j.kotlin.contextName
import org.apache.logging.log4j.kotlin.logger
import org.apache.logging.log4j.util.Supplier
import org.openjdk.jmh.annotations.Benchmark
import org.openjdk.jmh.annotations.BenchmarkMode
import org.openjdk.jmh.annotations.Fork
import org.openjdk.jmh.annotations.Measurement
import org.openjdk.jmh.annotations.Mode
import org.openjdk.jmh.annotations.OutputTimeUnit
import org.openjdk.jmh.annotations.Warmup
import java.util.concurrent.TimeUnit

val LOGGER1 = logger("Bar")
val LOGGER2 = logger(contextName {})

@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@Fork(value = 2, jvmArgs = ["-Xms2G", "-Xmx2G"])
@Warmup(iterations = 3, time = 5)
@Measurement(iterations = 5, time = 1)
open class LoggingBenchmark {
  companion object: Logging {
    @JvmStatic
    val LOGGER3 = logger()
    val LOGGER4: Logger = LogManager.getLogger()
    val LOGGER5 = logger
  }

  @Benchmark
  fun topLevelNamedLoggerFunctional() {
    LOGGER1.info { "Test" }
  }

  @Benchmark
  fun topLevelNamedLoggerDirect() {
    LOGGER1.info("Test")
  }

  @Benchmark
  fun topLevelLoggerWithContextLookupFunctional() {
    LOGGER2.info {"Test" }
  }

  @Benchmark
  fun topLevelLoggerWithContextLookupDirect() {
    LOGGER2.info("Test")
  }

  @Benchmark
  fun companionObjectKotlinLoggerFunctional() {
    LOGGER3.info { "Test" }
  }

  @Benchmark
  fun companionObjectKotlinLoggerDirect() {
    LOGGER3.info("Test")
  }

  @Benchmark
  fun companionObjectLog4jLoggerFunctional() {
    LOGGER4.info(Supplier { "Test" })
  }

  @Benchmark
  fun companionObjectLog4jLoggerDirect() {
    LOGGER4.info("Test")
  }

  @Benchmark
  fun companionObjectLookupInterfaceFunctional() {
    logger.info {"Test" }
  }

  @Benchmark
  fun companionObjectLookupInterfaceDirect() {
    logger.info("Test")
  }

  @Benchmark
  fun companionObjectExtensionPropertyFunctional() {
    LOGGER5.info { "Test" }
  }

  @Benchmark
  fun companionObjectExtensionPropertyDirect() {
    LOGGER5.info("Test")
  }
}