foundations/foundation-config/src/test/java/org/apache/servicecomb/config/priority/TestPriorityPropertyManager.java

/*
 * 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.
 */

package org.apache.servicecomb.config.priority;

import org.apache.servicecomb.config.ConfigUtil;
import org.apache.servicecomb.config.inject.InjectProperties;
import org.apache.servicecomb.config.inject.InjectProperty;
import org.apache.servicecomb.config.inject.TestConfigObjectFactory;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;

import com.netflix.config.DynamicProperty;

public class TestPriorityPropertyManager extends TestPriorityPropertyBase {
  String high = "ms.schema.op";

  String middle = "ms.schema";

  String low = "ms";

  String[] keys = {high, middle, low};

  @InjectProperties(prefix = "root")
  public static class ConfigWithAnnotation {
    @InjectProperty(prefix = "override", keys = {"high", "low"})
    public String strValue;
  }

  private void waitKeyForGC(PriorityPropertyManager priorityPropertyManager) {
    long maxTime = 10000;
    long currentTime = System.currentTimeMillis();
    while (System.currentTimeMillis() - currentTime < maxTime) {
      if (priorityPropertyManager.getConfigObjectMap().isEmpty()) {
        break;
      }
      System.runFinalization();
      System.gc();
      try {
        Thread.yield();
        Thread.sleep(10);
      } catch (InterruptedException e) {
        e.printStackTrace();
      }
    }
  }

  @Test
  public void testConfigurationsAreGCCollected() {
    long timeBegin = System.currentTimeMillis();

    for (int i = 0; i < 100; i++) {
      for (int j = 0; j < 100; j++) {
        TestConfigObjectFactory.ConfigWithAnnotation configConfigObject = priorityPropertyManager.createConfigObject(
            TestConfigObjectFactory.ConfigWithAnnotation.class);
        Assertions.assertEquals("abc", configConfigObject.strDef);
        PriorityProperty<Long> configPriorityProperty = propertyFactory.getOrCreate(Long.class, -1L, -2L, keys);
        Assertions.assertEquals(-2L, (long) configPriorityProperty.getValue());
      }
    }

    waitKeyForGC(priorityPropertyManager);

    Assertions.assertTrue(priorityPropertyManager.getConfigObjectMap().isEmpty());
    for (DynamicProperty property : ConfigUtil.getAllDynamicProperties().values()) {
      Assertions.assertTrue(ConfigUtil.getCallbacks(property).isEmpty());
    }

    System.out.println("Token : " + (System.currentTimeMillis() - timeBegin));
  }
}