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   * 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.
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  package org.apache.cassandra.distributed.test.streaming;
  
  import java.io.IOException;
  import java.nio.ByteBuffer;
  import java.util.List;
  import java.util.UUID;
  import java.util.concurrent.Callable;
  import java.util.regex.Matcher;
  import java.util.regex.Pattern;
  import java.util.stream.Collectors;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import net.bytebuddy.ByteBuddy;
  import net.bytebuddy.dynamic.loading.ClassLoadingStrategy;
  import net.bytebuddy.implementation.MethodDelegation;
  import net.bytebuddy.implementation.bind.annotation.SuperCall;
  import org.apache.cassandra.db.rows.UnfilteredRowIterator;
  import org.apache.cassandra.db.streaming.CassandraIncomingFile;
  import org.apache.cassandra.distributed.Cluster;
  import org.apache.cassandra.distributed.api.Feature;
  import org.apache.cassandra.distributed.api.IInvokableInstance;
  import org.apache.cassandra.distributed.api.LogResult;
  import org.apache.cassandra.distributed.api.SimpleQueryResult;
  import org.apache.cassandra.distributed.test.TestBaseImpl;
  import org.apache.cassandra.io.sstable.RangeAwareSSTableWriter;
  import org.apache.cassandra.io.sstable.SSTableZeroCopyWriter;
  import org.apache.cassandra.io.util.SequentialWriter;
  import org.assertj.core.api.Assertions;
  import static net.bytebuddy.matcher.ElementMatchers.named;
  import static net.bytebuddy.matcher.ElementMatchers.takesArguments;
  
  public class AbstractStreamFailureLogs extends TestBaseImpl
  {
      protected static final Logger logger = LoggerFactory.getLogger(AbstractStreamFailureLogs.class);
  
      protected static final int FAILING_NODE = 2;
  
      protected void streamTest(boolean zeroCopyStreaming, String reason, Integer failedNode) throws IOException
      {
          try (Cluster cluster = Cluster.build(2)
                                        .withInstanceInitializer(BBStreamHelper::install)
                                        .withConfig(c -> c.with(Feature.values())
                                                          .set("stream_entire_sstables", zeroCopyStreaming)
                                                          // when die, this will try to halt JVM, which is easier to validate in the test
                                                          // other levels require checking state of the subsystems
                                                          .set("disk_failure_policy", "die"))
                                        .start())
          {
              init(cluster);
  
              cluster.schemaChange(withKeyspace("CREATE TABLE %s.tbl (pk int PRIMARY KEY)"));
  
              triggerStreaming(cluster);
              // make sure disk failure policy is not triggered
  
              IInvokableInstance failingNode = cluster.get(failedNode);
  
              searchForLog(failingNode, reason);
          }
      }
  
      protected void triggerStreaming(Cluster cluster)
      {
          IInvokableInstance node1 = cluster.get(1);
          IInvokableInstance node2 = cluster.get(2);
  
          // repair will do streaming IFF there is a mismatch; so cause one
          for (int i = 0; i < 10; i++)
              node1.executeInternal(withKeyspace("INSERT INTO %s.tbl (pk) VALUES (?)"), i); // timestamp won't match, causing a mismatch
  
          // trigger streaming; expected to fail as streaming socket closed in the middle (currently this is an unrecoverable event)
          //Blocks until the stream is complete
          node2.nodetoolResult("repair", "-full", KEYSPACE, "tbl").asserts().failure();
      }
  
      protected void searchForLog(IInvokableInstance failingNode, String reason)
      {
          searchForLog(failingNode, true, reason);
      }
  
      protected boolean searchForLog(IInvokableInstance failingNode, boolean failIfNoMatch, String reason)
      {
          LogResult<List<String>> result = failingNode.logs().grepForErrors(-1, Pattern.compile("Stream failed:"));
          // grepForErrors will include all ERROR logs even if they don't match the pattern; for this reason need to filter after the fact
          List<String> matches = result.getResult();
  
          matches = matches.stream().filter(s -> s.startsWith("WARN")).collect(Collectors.toList());
          logger.info("Stream failed logs found: {}", String.join("\n", matches));
          if (matches.isEmpty() && !failIfNoMatch)
              return false;
  
          Assertions.assertThat(matches)
                    .describedAs("node%d expected to find %s but could not", failingNode.config().num(), reason)
                    .hasSize(1);
          String logLine = matches.get(0);
          Assertions.assertThat(logLine).contains(reason);
  
          Matcher match = Pattern.compile(".*\\[Stream #(.*)\\]").matcher(logLine);
          if (!match.find()) throw new AssertionError("Unable to parse: " + logLine);
          UUID planId = UUID.fromString(match.group(1));
          SimpleQueryResult qr = failingNode.executeInternalWithResult("SELECT * FROM system_views.streaming WHERE id=?", planId);
          Assertions.assertThat(qr.hasNext()).isTrue();
          Assertions.assertThat(qr.next().getString("failure_cause")).contains(reason);
          return true;
      }
  
      public static class BBStreamHelper
      {
          @SuppressWarnings("unused")
          public static int writeDirectlyToChannel(ByteBuffer buf, @SuperCall Callable<Integer> zuper) throws Exception
          {
              if (isCaller(SSTableZeroCopyWriter.class.getName(), "write"))
                  throw new RuntimeException("TEST");
              // different context; pass through
              return zuper.call();
          }
  
          @SuppressWarnings("unused")
          public static boolean append(UnfilteredRowIterator partition, @SuperCall Callable<Boolean> zuper) throws Exception
          {
              if (isCaller(CassandraIncomingFile.class.getName(), "read")) // handles compressed and non-compressed
                  throw new java.nio.channels.ClosedChannelException();
              // different context; pass through
              return zuper.call();
          }
  
          public static void install(ClassLoader classLoader, Integer num)
          {
              if (num != FAILING_NODE)
                  return;
              new ByteBuddy().rebase(SequentialWriter.class)
                             .method(named("writeDirectlyToChannel").and(takesArguments(1)))
                             .intercept(MethodDelegation.to(BBStreamHelper.class))
                             .make()
                             .load(classLoader, ClassLoadingStrategy.Default.INJECTION);
  
              new ByteBuddy().rebase(RangeAwareSSTableWriter.class)
                             .method(named("append").and(takesArguments(1)))
                             .intercept(MethodDelegation.to(BBStreamHelper.class))
                             .make()
                             .load(classLoader, ClassLoadingStrategy.Default.INJECTION);
  
          }
      }
  
      protected static boolean isCaller(String klass, String method)
      {
          StackTraceElement[] stack = Thread.currentThread().getStackTrace();
          for (int i = 0; i < stack.length; i++)
          {
              StackTraceElement e = stack[i];
              if (klass.equals(e.getClassName()) && method.equals(e.getMethodName()))
                  return true;
          }
          return false;
      }
  }
  