content: /*
   * 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 com.datastax.oss.driver.internal.core.context;
  
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.when;
  
  import com.datastax.oss.driver.api.core.config.DefaultDriverOption;
  import com.datastax.oss.driver.api.core.config.DriverConfig;
  import com.datastax.oss.driver.api.core.config.DriverConfigLoader;
  import com.datastax.oss.driver.api.core.config.DriverExecutionProfile;
  import com.datastax.oss.driver.api.core.loadbalancing.LoadBalancingPolicy;
  import com.datastax.oss.driver.api.core.loadbalancing.NodeDistanceEvaluator;
  import com.datastax.oss.driver.api.core.metadata.Node;
  import com.datastax.oss.driver.api.core.metadata.NodeStateListener;
  import com.datastax.oss.driver.api.core.metadata.schema.SchemaChangeListener;
  import com.datastax.oss.driver.api.core.session.ProgrammaticArguments;
  import com.datastax.oss.driver.api.core.tracker.RequestTracker;
  import com.datastax.oss.driver.internal.core.ConsistencyLevelRegistry;
  import com.datastax.oss.driver.internal.core.loadbalancing.DefaultLoadBalancingPolicy;
  import com.datastax.oss.driver.shaded.guava.common.collect.ImmutableMap;
  import com.datastax.oss.driver.shaded.guava.common.collect.Maps;
  import edu.umd.cs.findbugs.annotations.NonNull;
  import edu.umd.cs.findbugs.annotations.Nullable;
  import java.time.Duration;
  import java.util.Collections;
  import java.util.List;
  import java.util.Map;
  import java.util.Optional;
  import java.util.UUID;
  
  public class MockedDriverContextFactory {
  
    public static DefaultDriverContext defaultDriverContext() {
      return defaultDriverContext(MockedDriverContextFactory.defaultProfile("datacenter1"));
    }
  
    public static DefaultDriverContext defaultDriverContext(
        DriverExecutionProfile defaultProfile, DriverExecutionProfile... profiles) {
  
      /* Setup machinery to connect the input DriverExecutionProfile to the config loader */
      final DriverConfig driverConfig = mock(DriverConfig.class);
      final DriverConfigLoader configLoader = mock(DriverConfigLoader.class);
      when(configLoader.getInitialConfig()).thenReturn(driverConfig);
      when(driverConfig.getDefaultProfile()).thenReturn(defaultProfile);
      when(driverConfig.getProfile(defaultProfile.getName())).thenReturn(defaultProfile);
  
      for (DriverExecutionProfile profile : profiles) {
        when(driverConfig.getProfile(profile.getName())).thenReturn(profile);
      }
  
      ProgrammaticArguments args =
          ProgrammaticArguments.builder()
              .withNodeStateListener(mock(NodeStateListener.class))
              .withSchemaChangeListener(mock(SchemaChangeListener.class))
              .withRequestTracker(mock(RequestTracker.class))
              .withLocalDatacenters(Maps.newHashMap())
              .withNodeDistanceEvaluators(Maps.newHashMap())
              .build();
  
      return new DefaultDriverContext(configLoader, args) {
        @NonNull
        @Override
        public Map<String, LoadBalancingPolicy> getLoadBalancingPolicies() {
          ImmutableMap.Builder<String, LoadBalancingPolicy> map = ImmutableMap.builder();
          map.put(
              defaultProfile.getName(),
              mockLoadBalancingPolicy(
                  this,
                  defaultProfile.getName(),
                  defaultProfile.getString(DefaultDriverOption.LOAD_BALANCING_LOCAL_DATACENTER)));
          for (DriverExecutionProfile profile : profiles) {
            map.put(
                profile.getName(),
                mockLoadBalancingPolicy(
                    this,
                    profile.getName(),
                    profile.getString(DefaultDriverOption.LOAD_BALANCING_LOCAL_DATACENTER)));
          }
          return map.build();
        }
  
        @NonNull
        @Override
        public ConsistencyLevelRegistry getConsistencyLevelRegistry() {
          return mock(ConsistencyLevelRegistry.class);
        }
      };
    }
  
    public static DriverExecutionProfile defaultProfile(String localDc) {
      return createProfile(DriverExecutionProfile.DEFAULT_NAME, localDc);
    }
  
    public static DriverExecutionProfile createProfile(String name, String localDc) {
      DriverExecutionProfile defaultProfile = mock(DriverExecutionProfile.class);
      when(defaultProfile.getName()).thenReturn(name);
      when(defaultProfile.getString(DefaultDriverOption.PROTOCOL_COMPRESSION, "none"))
          .thenReturn("none");
      when(defaultProfile.getDuration(DefaultDriverOption.METRICS_NODE_EXPIRE_AFTER))
          .thenReturn(Duration.ofMinutes(5));
      when(defaultProfile.isDefined(DefaultDriverOption.METRICS_FACTORY_CLASS)).thenReturn(true);
      when(defaultProfile.getString(DefaultDriverOption.METRICS_FACTORY_CLASS))
          .thenReturn("DefaultMetricsFactory");
      when(defaultProfile.getString(DefaultDriverOption.LOAD_BALANCING_LOCAL_DATACENTER))
          .thenReturn(localDc);
      return defaultProfile;
    }
  
    public static void allowRemoteDcConnectivity(
        DriverExecutionProfile profile,
        int maxNodesPerRemoteDc,
        boolean allowRemoteSatisfyLocalDc,
        List<String> preferredRemoteDcs) {
      when(profile.getInt(DefaultDriverOption.LOAD_BALANCING_DC_FAILOVER_MAX_NODES_PER_REMOTE_DC))
          .thenReturn(maxNodesPerRemoteDc);
      when(profile.getBoolean(
              DefaultDriverOption.LOAD_BALANCING_DC_FAILOVER_ALLOW_FOR_LOCAL_CONSISTENCY_LEVELS))
          .thenReturn(allowRemoteSatisfyLocalDc);
      when(profile.getStringList(DefaultDriverOption.LOAD_BALANCING_DC_FAILOVER_PREFERRED_REMOTE_DCS))
          .thenReturn(preferredRemoteDcs);
    }
  
    private static LoadBalancingPolicy mockLoadBalancingPolicy(
        DefaultDriverContext driverContext, String profile, String localDc) {
      LoadBalancingPolicy loadBalancingPolicy =
          new DefaultLoadBalancingPolicy(driverContext, profile) {
            @NonNull
            @Override
            protected Optional<String> discoverLocalDc(@NonNull Map<UUID, Node> nodes) {
              return Optional.ofNullable(localDc);
            }
  
            @NonNull
            @Override
            protected NodeDistanceEvaluator createNodeDistanceEvaluator(
                @Nullable String localDc, @NonNull Map<UUID, Node> nodes) {
              return mock(NodeDistanceEvaluator.class);
            }
          };
      loadBalancingPolicy.init(
          Collections.emptyMap(), mock(LoadBalancingPolicy.DistanceReporter.class));
      return loadBalancingPolicy;
    }
  }
  