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  package org.apache.cassandra.index.sai.functional;
  
  import org.assertj.core.api.Assertions;
  import org.junit.BeforeClass;
  import org.junit.Test;
  
  import org.apache.cassandra.db.marshal.Int32Type;
  import org.apache.cassandra.index.IndexNotAvailableException;
  import org.apache.cassandra.index.sai.SAITester;
  import org.apache.cassandra.index.sai.SSTableContext;
  import org.apache.cassandra.index.sai.utils.IndexIdentifier;
  import org.apache.cassandra.index.sai.utils.IndexTermType;
  import org.apache.cassandra.inject.Injection;
  import org.apache.cassandra.inject.Injections;
  import org.apache.cassandra.service.StorageService;
  
  import static org.junit.Assert.assertEquals;
  
  public class FailureTest extends SAITester
  {
      @BeforeClass
      public static void setup()
      {
          StorageService.instance.unsafeSetInitialized();
      }
  
      @Test
      public void shouldMakeIndexNonQueryableOnSSTableContextFailureDuringFlush() throws Throwable
      {
          createTable(CREATE_TABLE_TEMPLATE);
          IndexIdentifier indexIdentifier = createIndexIdentifier(createIndex(String.format(CREATE_INDEX_TEMPLATE, "v1")));
          IndexTermType indexTermType = createIndexTermType(Int32Type.instance);
  
          execute("INSERT INTO %s (id1, v1) VALUES ('1', 1)");
          execute("INSERT INTO %s (id1, v1) VALUES ('2', 2)");
          flush();
  
          assertEquals(1, execute("SELECT id1 FROM %s WHERE v1 > 1").size());
  
          verifyIndexFiles(indexTermType, indexIdentifier, 1, 1, 1);
          verifySSTableIndexes(indexIdentifier, 1, 1);
  
          execute("INSERT INTO %s (id1, v1) VALUES ('3', 3)");
  
          Injection ssTableContextCreationFailure = newFailureOnEntry("context_failure_on_flush", SSTableContext.class, "<init>", RuntimeException.class);
          Injections.inject(ssTableContextCreationFailure);
  
          flush();
  
          // Verify that, while the node is still operational, the index is not.
          Assertions.assertThatThrownBy(() -> executeInternal("SELECT * FROM %s WHERE v1 > 1"))
                    .isInstanceOf(IndexNotAvailableException.class);
  
          ssTableContextCreationFailure.disable();
  
          // Now verify that a restart actually repairs the index...
          simulateNodeRestart();
  
          verifyIndexFiles(indexTermType, indexIdentifier, 2, 2, 2);
          verifySSTableIndexes(indexIdentifier, 2, 2);
  
          assertEquals(2, execute("SELECT id1 FROM %s WHERE v1 > 1").size());
      }
  
      @Test
      public void shouldMakeIndexNonQueryableOnSSTableContextFailureDuringCompaction() throws Throwable
      {
          createTable(CREATE_TABLE_TEMPLATE);
          IndexIdentifier indexIdentifier = createIndexIdentifier(createIndex(String.format(CREATE_INDEX_TEMPLATE, "v1")));
          IndexTermType indexTermType = createIndexTermType(Int32Type.instance);
  
          execute("INSERT INTO %s (id1, v1) VALUES ('1', 1)");
          flush();
  
          execute("INSERT INTO %s (id1, v1) VALUES ('2', 2)");
          flush();
  
          assertEquals(1, execute("SELECT id1 FROM %s WHERE v1 > 1").size());
  
          verifyIndexFiles(indexTermType, indexIdentifier, 2, 2, 2);
          verifySSTableIndexes(indexIdentifier, 2, 2);
  
          Injection ssTableContextCreationFailure = newFailureOnEntry("context_failure_on_compaction", SSTableContext.class, "<init>", RuntimeException.class);
          Injections.inject(ssTableContextCreationFailure);
  
          compact();
  
          // Verify that the index is not available.
          Assertions.assertThatThrownBy(() -> executeInternal("SELECT * FROM %s WHERE v1 > 1"))
                    .isInstanceOf(IndexNotAvailableException.class);
      }
  
      @Test
      public void shouldMakeIndexNonQueryableOnSSTableContextFailureDuringCreation() throws Throwable
      {
          createTable(CREATE_TABLE_TEMPLATE);
  
          execute("INSERT INTO %s (id1, v1) VALUES ('1', 1)");
          execute("INSERT INTO %s (id1, v1) VALUES ('2', 2)");
  
          // We need to reference SSTableContext first or the failure injection fails
          // because byteman can't find the class.
          SSTableContext.class.getName();
  
          Injection ssTableContextCreationFailure = newFailureOnEntry("context_failure_on_creation", SSTableContext.class, "<init>", RuntimeException.class);
          Injections.inject(ssTableContextCreationFailure);
  
          IndexIdentifier indexIdentifier = createIndexIdentifier(createIndexAsync(String.format(CREATE_INDEX_TEMPLATE, "v2")));
  
          // Verify that the initial index build fails...
          verifyInitialIndexFailed(indexIdentifier.indexName);
  
          verifyNoIndexFiles();
          verifySSTableIndexes(indexIdentifier, 0);
  
          // ...and then verify that, while the node is still operational, the index is not.
          Assertions.assertThatThrownBy(() -> executeInternal("SELECT * FROM %s WHERE v2 = '1'"))
                    .isInstanceOf(IndexNotAvailableException.class);
      }
  }
  