code: /*
   * 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.skywalking.oap.server.core.query;
  
  import java.util.ArrayList;
  import java.util.List;
  import org.apache.skywalking.oap.server.core.CoreModule;
  import org.apache.skywalking.oap.server.core.CoreModuleConfig;
  import org.apache.skywalking.oap.server.core.CoreModuleProvider;
  import org.apache.skywalking.oap.server.core.MockModuleManager;
  import org.apache.skywalking.oap.server.core.MockModuleProvider;
  import org.apache.skywalking.oap.server.core.analysis.IDManager;
  import org.apache.skywalking.oap.server.core.cache.NetworkAddressAliasCache;
  import org.apache.skywalking.oap.server.core.config.ComponentLibraryCatalogService;
  import org.apache.skywalking.oap.server.core.config.IComponentLibraryCatalogService;
  import org.apache.skywalking.oap.server.core.query.type.Call;
  import org.apache.skywalking.oap.server.core.query.type.Node;
  import org.apache.skywalking.oap.server.core.query.type.Topology;
  import org.apache.skywalking.oap.server.core.source.DetectPoint;
  import org.apache.skywalking.oap.server.library.module.ModuleManager;
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.mockito.Mockito;
  
  public class ServiceTopologyBuilderTest {
      private CoreModuleProvider moduleProvider;
      private ModuleManager moduleManager;
  
      @BeforeEach
      public void setupMetrics() throws Throwable {
          moduleProvider = Mockito.mock(CoreModuleProvider.class);
          moduleManager = new MockModuleManager() {
              @Override
              protected void init() {
                  register(CoreModule.NAME, () -> new MockModuleProvider() {
                      @Override
                      protected void register() {
                          registerServiceImplementation(
                              IComponentLibraryCatalogService.class, new ComponentLibraryCatalogService());
                          registerServiceImplementation(
                              NetworkAddressAliasCache.class, new NetworkAddressAliasCache(new CoreModuleConfig()));
                      }
                  });
              }
          };
      }
  
      @Test
      public void testServiceTopologyBuild() {
          final ServiceTopologyBuilder serviceTopologyBuilder = new ServiceTopologyBuilder(moduleManager);
          List<Call.CallDetail> serviceRelationClientCalls = new ArrayList<>();
          Call.CallDetail call1 = new Call.CallDetail();
          call1.buildFromServiceRelation(
              IDManager.ServiceID.buildRelationId(
                  new IDManager.ServiceID.ServiceRelationDefine(
                      IDManager.ServiceID.buildId("SvrA", true),
                      IDManager.ServiceID.buildId("SvrB", true)
                  )
              ),
              // mtls
              142,
              DetectPoint.CLIENT
          );
          serviceRelationClientCalls.add(call1);
          Call.CallDetail call2 = new Call.CallDetail();
          call2.buildFromServiceRelation(
              IDManager.ServiceID.buildRelationId(
                  new IDManager.ServiceID.ServiceRelationDefine(
                      IDManager.ServiceID.buildId("SvrA", true),
                      IDManager.ServiceID.buildId("SvrB", true)
                  )
              ),
              // http
              49,
              DetectPoint.CLIENT
          );
          serviceRelationClientCalls.add(call2);
  
          List<Call.CallDetail> serviceRelationServerCalls = new ArrayList<>();
          Call.CallDetail call3 = new Call.CallDetail();
          call3.buildFromServiceRelation(
              IDManager.ServiceID.buildRelationId(
                  new IDManager.ServiceID.ServiceRelationDefine(
                      IDManager.ServiceID.buildId("SvrA", true),
                      IDManager.ServiceID.buildId("SvrB", true)
                  )
              ),
              // mtls
              142,
              DetectPoint.SERVER
          );
          serviceRelationServerCalls.add(call3);
          Call.CallDetail call4 = new Call.CallDetail();
          call4.buildFromServiceRelation(
              IDManager.ServiceID.buildRelationId(
                  new IDManager.ServiceID.ServiceRelationDefine(
                      IDManager.ServiceID.buildId("SvrA", true),
                      IDManager.ServiceID.buildId("SvrB", true)
                  )
              ),
              // http
              49,
              DetectPoint.SERVER
          );
          serviceRelationServerCalls.add(call4);
          final Topology topology = serviceTopologyBuilder.build(serviceRelationClientCalls, serviceRelationServerCalls);
          Assertions.assertEquals(2, topology.getNodes().size());
          for (final Node node : topology.getNodes()) {
              if (node.getName().equals("SvrB")) {
                  Assertions.assertEquals("http", node.getType());
              } else if (node.getName().equals("SvrA")) {
                  Assertions.assertEquals(null, node.getType());
              }
          }
          for (final Call call : topology.getCalls()) {
              Assertions.assertEquals(2, call.getSourceComponents().size());
              Assertions.assertEquals(List.of("mtls", "http"), call.getTargetComponents());
          }
      }
  }
  