foundations/foundation-config/src/test/java/org/apache/servicecomb/config/archaius/sources/TestYAMLConfigurationSource.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.archaius.sources;

import static org.apache.servicecomb.config.archaius.sources.ConfigSourceMaker.yamlConfigSource;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;

import java.net.URL;
import java.util.List;
import java.util.Map;

import org.apache.commons.configuration.SystemConfiguration;
import org.apache.servicecomb.config.archaius.scheduler.NeverStartPollingScheduler;
import org.junit.Assert;
import org.junit.Test;

import com.netflix.config.ConcurrentCompositeConfiguration;
import com.netflix.config.ConcurrentMapConfiguration;
import com.netflix.config.DynamicConfiguration;
import com.netflix.config.PollResult;

/**
 * Created by   on 2017/1/5.
 */
public class TestYAMLConfigurationSource {

  @Test
  public void testPullFromClassPath() throws Exception {
    MicroserviceConfigurationSource configSource = yamlConfigSource();
    PollResult result = configSource.poll(true, null);
    Map<String, Object> configMap = result.getComplete();
    assertNotNull(configMap);
    assertEquals(29, configMap.size());
    assertNotNull(configMap.get("trace.handler.sampler.percent"));
    assertEquals(0.5, configMap.get("trace.handler.sampler.percent"));
  }

  @Test
  public void testPullFroGivenURL() throws Exception {
    ClassLoader loader = Thread.currentThread().getContextClassLoader();
    URL test1URL = loader.getResource("test1.yaml");
    URL test2URL = loader.getResource("test2.yaml");
    System.setProperty("servicecomb.configurationSource.additionalUrls", test1URL.toString() + "," + test2URL.toString());
    MicroserviceConfigurationSource configSource = yamlConfigSource();
    PollResult result = configSource.poll(true, null);
    Map<String, Object> configMap = result.getComplete();

    assertEquals(3, configSource.getConfigModels().size());
    assertNotNull(configMap);
    assertEquals(40, configMap.size());
    assertNotNull(configMap.get("trace.handler.sampler.percent"));
    assertEquals(0.5, configMap.get("trace.handler.sampler.percent"));

    System.getProperties().remove("servicecomb.configurationSource.additionalUrls");
  }

  @Test
  public void testFullOperation() {
    // configuration from system properties
    ConcurrentMapConfiguration configFromSystemProperties =
        new ConcurrentMapConfiguration(new SystemConfiguration());
    // configuration from yaml file
    DynamicConfiguration configFromYamlFile =
        new DynamicConfiguration(yamlConfigSource(), new NeverStartPollingScheduler());
    // create a hierarchy of configuration that makes
    // 1) dynamic configuration source override system properties
    ConcurrentCompositeConfiguration finalConfig = new ConcurrentCompositeConfiguration();
    finalConfig.addConfiguration(configFromYamlFile, "yamlConfig");
    finalConfig.addConfiguration(configFromSystemProperties, "systemEnvConfig");
    Assert.assertEquals(0.5, finalConfig.getDouble("trace.handler.sampler.percent"), 0.5);

    Object o = finalConfig.getProperty("zq");
    @SuppressWarnings("unchecked")
    List<Map<String, Object>> listO = (List<Map<String, Object>>) o;
    Assert.assertEquals(3, listO.size());
  }
}