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 org.apache.cassandra.distributed.test.cql3;
  
  import java.io.IOException;
  
  import accord.utils.RandomSource;
  import net.bytebuddy.ByteBuddy;
  import net.bytebuddy.dynamic.loading.ClassLoadingStrategy;
  import net.bytebuddy.implementation.MethodDelegation;
  import org.apache.cassandra.distributed.Cluster;
  import org.apache.cassandra.distributed.api.ConsistencyLevel;
  import org.apache.cassandra.distributed.api.IInstanceConfig;
  import org.apache.cassandra.distributed.api.IInvokableInstance;
  import org.apache.cassandra.schema.TableMetadata;
  import org.apache.cassandra.service.reads.repair.ReadRepairStrategy;
  import org.apache.cassandra.utils.Shared;
  import org.apache.cassandra.utils.TimeUUID;
  
  import static net.bytebuddy.matcher.ElementMatchers.named;
  
  public abstract class MultiNodeTableWalkBase extends SingleNodeTableWalkTest
  {
      /**
       * This field lets the test run as if it was multiple nodes, but actually runs against a single node.
       * This behavior is desirable when this test fails to see if the issue can be reproduced on single node as well.
       */
      private static final boolean mockMultiNode = false;
  
      private final ReadRepairStrategy readRepair;
  
      protected MultiNodeTableWalkBase(ReadRepairStrategy readRepair)
      {
          this.readRepair = readRepair;
      }
  
      @Override
      protected TableMetadata defineTable(RandomSource rs, String ks)
      {
          TableMetadata tbl = super.defineTable(rs, ks);
          return tbl.unbuild().params(tbl.params.unbuild().readRepair(readRepair).build()).build();
      }
  
      @Override
      protected Cluster createCluster() throws IOException
      {
          return createCluster(mockMultiNode ? 1 : 3);
      }
  
      @Override
      protected void clusterConfig(IInstanceConfig c)
      {
          super.clusterConfig(c);
          c.set("range_request_timeout", "180s")
           .set("read_request_timeout", "180s")
           .set("write_request_timeout", "180s")
           .set("native_transport_timeout", "180s")
           .set("slow_query_log_timeout", "180s");
      }
  
      @Override
      protected void clusterInitializer(ClassLoader cl, int node)
      {
          BBHelper.install(cl, node);
      }
  
      @Override
      protected State createState(RandomSource rs, Cluster cluster)
      {
          return new MultiNodeState(rs, cluster);
      }
  
      protected class MultiNodeState extends State
      {
          public MultiNodeState(RandomSource rs, Cluster cluster)
          {
              super(rs, cluster);
          }
  
          @Override
          protected boolean isMultiNode()
          {
              // When a seed fails its useful to rerun the test as a single node to see if the issue persists... but doing so corrupts the random history!
              // To avoid that, this method hard codes that the test is multi node...
              return true;
          }
  
          @Override
          protected boolean allowRepair()
          {
              return hasEnoughMemtableForRepair() || hasEnoughSSTablesForRepair();
          }
  
          @Override
          protected IInvokableInstance selectInstance(RandomSource rs)
          {
              if (mockMultiNode)
              {
                  rs.nextInt(0, 3); // needed to avoid breaking random history
                  return cluster.get(1);
              }
              return super.selectInstance(rs);
          }
  
          @Override
          protected ConsistencyLevel selectCl()
          {
              return ConsistencyLevel.ALL;
          }
  
          @Override
          protected ConsistencyLevel mutationCl()
          {
              return ConsistencyLevel.NODE_LOCAL;
          }
      }
  
      /**
       * This is not a deterministic clock for TimeUUID, but it's a monotonic clock, which means that any instance that gets
       * a TimeUUID from this clock has the propery that its happens-after all other ones cross all instances.
       *
       * This class came around because TimeUUID.Generator.nextUnixMicros works with milliseconds, and when time doesn't
       * move forward (goes back or test is "too fast") then it becomes an instance local bump-counter; this counter allows
       * a logically later timeuuid to happens-before a logically earlier one!
       */
      @Shared
      public static class GlobalClock
      {
          private static long lastMicros = 0;
          public synchronized static long nextUnixMicros()
          {
              return ++lastMicros;
          }
  
          public synchronized static void reset()
          {
              // this method isn't actually needed for the property of this class, but it does help isolate any non-deterministic issues
              lastMicros = 0;
          }
      }
  
      public static class BBHelper
      {
          static void install(ClassLoader cl, int nodeNumber)
          {
              new ByteBuddy().rebase(TimeUUID.Generator.class)
                             .method(named("nextUnixMicros"))
                             .intercept(MethodDelegation.to(GlobalClock.class))
                             .make()
                             .load(cl, ClassLoadingStrategy.Default.INJECTION);
  
              GlobalClock.reset();
          }
      }
  }
  