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.activemq.openwire;
  
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.io.DataOutputStream;
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.util.ArrayList;
  import java.util.List;
  
  public abstract class DataFileGenerator extends org.junit.Assert {
  
     static final File MODULE_BASE_DIR;
     static final File CONTROL_DIR;
     static final File CLASS_FILE_DIR;
  
     static {
        MODULE_BASE_DIR = new File(System.getProperty("basedir", "."));
        CONTROL_DIR = new File(MODULE_BASE_DIR, "src/test/resources/openwire-control");
        CLASS_FILE_DIR = new File(MODULE_BASE_DIR, "src/test/java/org/apache/activemq/openwire");
     }
  
     public static void main(String[] args) throws Exception {
        generateControlFiles();
     }
  
     public static List<DataFileGenerator> getAllDataFileGenerators() throws Exception {
        // System.out.println("Looking for generators in : "+classFileDir);
        List<DataFileGenerator> l = new ArrayList<>();
        File[] files = CLASS_FILE_DIR.listFiles();
        for (int i = 0; files != null && i < files.length; i++) {
           File file = files[i];
           if (file.getName().endsWith("Data.java")) {
              String cn = file.getName();
              cn = cn.substring(0, cn.length() - ".java".length());
              Class<?> clazz = DataFileGenerator.class.getClassLoader().loadClass("org.apache.activemq.openwire." + cn);
              l.add((DataFileGenerator) clazz.newInstance());
           }
        }
        return l;
     }
  
     private static void generateControlFiles() throws Exception {
        List<DataFileGenerator> generators = getAllDataFileGenerators();
        for (DataFileGenerator element : generators) {
           try {
              // System.out.println("Processing: "+object.getClass());
              element.generateControlFile();
           } catch (Exception e) {
              // System.err.println("Error while processing:
              // "+object.getClass() + ". Reason: " + e);
           }
        }
     }
  
     public void generateControlFile() throws Exception {
        CONTROL_DIR.mkdirs();
        File dataFile = new File(CONTROL_DIR, getClass().getName() + ".bin");
  
        OpenWireFormat wf = new OpenWireFormat();
        wf.setCacheEnabled(false);
        wf.setStackTraceEnabled(false);
        wf.setVersion(1);
  
        FileOutputStream os = new FileOutputStream(dataFile);
        DataOutputStream ds = new DataOutputStream(os);
        wf.marshal(createObject(), ds);
        ds.close();
     }
  
     public InputStream generateInputStream() throws Exception {
        OpenWireFormat wf = new OpenWireFormat();
        wf.setCacheEnabled(false);
        wf.setStackTraceEnabled(false);
        wf.setVersion(1);
  
        ByteArrayOutputStream os = new ByteArrayOutputStream();
        DataOutputStream ds = new DataOutputStream(os);
        wf.marshal(createObject(), ds);
        ds.close();
  
        return new ByteArrayInputStream(os.toByteArray());
     }
  
     public static void assertAllControlFileAreEqual() throws Exception {
        List<DataFileGenerator> generators = getAllDataFileGenerators();
        for (DataFileGenerator element : generators) {
           // System.out.println("Processing: "+object.getClass());
           element.assertControlFileIsEqual();
        }
     }
  
     public void assertControlFileIsEqual() throws Exception {
        File dataFile = new File(CONTROL_DIR, getClass().getName() + ".bin");
        FileInputStream is1 = new FileInputStream(dataFile);
        int pos = 0;
        try {
           InputStream is2 = generateInputStream();
           int a = is1.read();
           int b = is2.read();
           pos++;
           assertEquals("Data does not match control file: " + dataFile + " at byte position " + pos, a, b);
           while (a >= 0 && b >= 0) {
              a = is1.read();
              b = is2.read();
              pos++;
              assertEquals(a, b);
           }
           is2.close();
        } finally {
           is1.close();
        }
     }
  
     protected abstract Object createObject() throws IOException;
  }
  