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   * "License"); you may not use this file except in compliance
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  package org.apache.cassandra.distributed.test;
  
  import java.util.List;
  
  import com.google.common.collect.ImmutableMap;
  import org.junit.Assert;
  import org.junit.Test;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import org.apache.cassandra.cql3.terms.Lists;
  import org.apache.cassandra.db.Keyspace;
  import org.apache.cassandra.distributed.Cluster;
  import org.apache.cassandra.distributed.api.Feature;
  import org.apache.cassandra.distributed.api.ICluster;
  import org.apache.cassandra.distributed.api.IInstanceConfig;
  import org.apache.cassandra.distributed.api.IInvokableInstance;
  import org.apache.cassandra.distributed.api.IIsolatedExecutor;
  import org.apache.cassandra.distributed.api.SimpleQueryResult;
  import org.apache.cassandra.distributed.api.TokenSupplier;
  import org.apache.cassandra.distributed.shared.ClusterUtils;
  import org.apache.cassandra.utils.Throwables;
  
  import static org.apache.cassandra.config.CassandraRelevantProperties.JOIN_RING;
  import static org.apache.cassandra.distributed.action.GossipHelper.withProperty;
  import static org.apache.cassandra.distributed.api.ConsistencyLevel.ONE;
  import static org.apache.cassandra.distributed.api.Feature.GOSSIP;
  import static org.apache.cassandra.distributed.api.Feature.NATIVE_PROTOCOL;
  import static org.apache.cassandra.distributed.api.Feature.NETWORK;
  import static org.apache.cassandra.distributed.api.TokenSupplier.evenlyDistributedTokens;
  import static org.apache.cassandra.distributed.shared.NetworkTopology.singleDcNetworkTopology;
  import static org.assertj.core.api.Assertions.assertThat;
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.fail;
  
  public class AlterTest extends TestBaseImpl
  {
      @Test
      public void getAndSetCompressionParametersTest() throws Throwable
      {
          try (ICluster<IInvokableInstance> cluster = init(builder().withNodes(2)
                                                                    .start()))
          {
              cluster.schemaChange("CREATE TABLE " + KEYSPACE + ".tbl (pk int, ck int, v int, PRIMARY KEY (pk, ck));");
              cluster.stream().forEach((i) -> {
                  i.acceptsOnInstance((IIsolatedExecutor.SerializableConsumer<String>) (ks) -> {
                      Keyspace.open(ks)
                              .getColumnFamilyStore("tbl")
                              .setCompressionParametersJson("{\"chunk_length_in_kb\": \"128\"," +
                                                            "  \"class\": \"org.apache.cassandra.io.compress.LZ4Compressor\"}");
                      Assert.assertTrue(Keyspace.open(ks)
                                                .getColumnFamilyStore("tbl")
                                                .getCompressionParametersJson().contains("128"));
                  }).accept(KEYSPACE);
              });
              cluster.schemaChange("ALTER TABLE " + KEYSPACE + ".tbl ADD v2 int");
  
              cluster.stream().forEach((i) -> {
                  i.acceptsOnInstance((IIsolatedExecutor.SerializableConsumer<String>) (ks) -> {
                      Assert.assertFalse(Keyspace.open(ks)
                                                 .getColumnFamilyStore("tbl")
                                                 .getCompressionParametersJson().contains("128"));
                  }).accept(KEYSPACE);
              });
          }
      }
  
      @Test
      public void alteringKeyspaceOnInsufficientNumberOfReplicasFiltersOutGossppingOnlyMembersTest() throws Throwable
      {
          int originalNodeCount = 1;
          int expandedNodeCount = originalNodeCount + 1;
  
          try (Cluster cluster = builder().withNodes(originalNodeCount)
                                          .withTokenSupplier(evenlyDistributedTokens(expandedNodeCount, 1))
                                          .withNodeIdTopology(singleDcNetworkTopology(expandedNodeCount, "dc0", "rack0"))
                                          .withConfig(config -> config.with(NETWORK, GOSSIP, NATIVE_PROTOCOL))
                                          .start())
          {
              IInstanceConfig config = cluster.newInstanceConfig();
              IInvokableInstance gossippingOnlyMember = cluster.bootstrap(config);
              withProperty(JOIN_RING, false, () -> gossippingOnlyMember.startup(cluster));
              for (String operation : new String[] { "CREATE", "ALTER" })
              {
                  SimpleQueryResult result = cluster.coordinator(2)
                                                    .executeWithResult(operation + " KEYSPACE abc WITH replication = {'class' : 'NetworkTopologyStrategy', 'dc0' : 2 }",
                                                                       ONE);
                  assertFalse(result.warnings().isEmpty());
                  assertThat(result.warnings().get(0)).contains("Your replication factor 2 for keyspace abc is higher than the number of nodes 1 for datacenter dc0");
              }
          }
      }
  
      @Test
      public void unknownMemtableConfigurationTest() throws Throwable
      {
          Logger logger = LoggerFactory.getLogger(getClass());
          try (Cluster cluster = Cluster.build(1)
                                        .withTokenSupplier(TokenSupplier.evenlyDistributedTokens(3, 1))
                                        .withConfig(c -> c.with(Feature.values())
                                                          .set("memtable", ImmutableMap.of(
                                                          "configurations", ImmutableMap.of(
                                                              "testconfig", ImmutableMap.of(
                                                                  "class_name", "SkipListMemtable")))))
                                        .start())
          {
              init(cluster);
              cluster.schemaChange("CREATE TABLE " + KEYSPACE + ".tbl (pk int PRIMARY KEY)");
  
              // Start Node 2 without the memtable configuration definition.
              IInvokableInstance node1 = cluster.get(1);
              IInvokableInstance node2 = ClusterUtils.addInstance(cluster, node1.config(), c -> c.set("memtable", ImmutableMap.of()));
              node2.startup(cluster);
  
              try
              {
                  cluster.schemaChange("ALTER TABLE " + KEYSPACE + ".tbl WITH memtable = 'testconfig'", false, node2);
                  fail("Expected ALTER to fail with unknown memtable configuration.");
              }
              catch (Throwable t)
              {
                  // expected
                  logger.info("Expected: {}", t.getMessage());
                  Assert.assertTrue(Throwables.isCausedBy(t, x -> x.getMessage().matches("Memtable configuration.*not found.*")));
              }
              long mark = node2.logs().mark();
  
              cluster.schemaChange("ALTER TABLE " + KEYSPACE + ".tbl WITH memtable = 'testconfig'", false, node1);
              // the above should succeed, the configuration is acceptable to node1
  
              ClusterUtils.awaitGossipSchemaMatch(cluster);
              List<String> errorInLog = node2.logs().grep(mark,"ERROR.*Invalid memtable configuration.*").getResult();
              Assert.assertTrue(errorInLog.size() > 0);
              logger.info(Lists.listToString(errorInLog));
  
              // Add a new node that has an invalid definition but should accept the already defined table schema.
              IInvokableInstance node3 = ClusterUtils.addInstance(cluster,
                                                                  node2.config(),
                                                                  c -> c.set("memtable", ImmutableMap.of(
                                                                  "configurations", ImmutableMap.of(
                                                                      "testconfig", ImmutableMap.of(
                                                                          "class_name", "NotExistingMemtable")))));
              node3.startup(cluster);
              ClusterUtils.awaitGossipSchemaMatch(cluster);
  
              errorInLog = node3.logs().grep("ERROR.*Invalid memtable configuration.*").getResult();
              Assert.assertTrue(errorInLog.size() > 0);
              logger.info(Lists.listToString(errorInLog));
  
              // verify that all nodes can write to the table
              node1.executeInternalWithResult("INSERT INTO " + KEYSPACE + ".tbl (pk) VALUES (?)", 1);
              node2.executeInternalWithResult("INSERT INTO " + KEYSPACE + ".tbl (pk) VALUES (?)", 2);
              node3.executeInternalWithResult("INSERT INTO " + KEYSPACE + ".tbl (pk) VALUES (?)", 3);
          }
      }
  }
  