public static void convertFiles(OutputStream output, File[] files) throws IOException {
    Context context = new Context();
    context.appender = new OutputStreamAppender(output);
    for (File file : files) {
      context.currentMember = null;
      BufferedReader reader = new BufferedReader(new FileReader(file));
      try {
        String line;
        while ((line = reader.readLine()) != null) {
          for (Test test : tests) {
            if (test.apply(context, line)) {
              // go to the next line
              break;
            }
          }
        }
      } finally {
        reader.close();
      }
    }
  }
A utility to convert existing gemfire logs into a graph logger file. This will help me debug
hydra runs more quickly.
geode-core/src/main/java/org/apache/geode/internal/sequencelog/io/GemfireLogConverter.java