package org.apache.maven.surefire.api.booter;
   
   /*
    * 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.
   */
  
  import org.apache.maven.surefire.api.util.internal.DumpFileUtils;
  
  import java.io.File;
  
  import static org.apache.maven.surefire.api.util.internal.DumpFileUtils.newDumpFile;
  
  /**
   * Dumps lost commands and caused exceptions in forked JVM. <br>
   * Fail-safe.
   *
   * @author <a href="mailto:tibordigana@apache.org">Tibor Digana (tibor17)</a>
   * @since 2.20
   */
  public final class DumpErrorSingleton
  {
      public static final String DUMP_FILE_EXT = ".dump";
      public static final String DUMPSTREAM_FILE_EXT = ".dumpstream";
      private static final DumpErrorSingleton SINGLETON = new DumpErrorSingleton();
  
      private File dumpFile;
      private File dumpStreamFile;
      private File binaryDumpStreamFile;
  
      private DumpErrorSingleton()
      {
      }
  
      public static DumpErrorSingleton getSingleton()
      {
          return SINGLETON;
      }
  
      public synchronized void init( File reportsDir, String dumpFileName )
      {
          dumpFile = createDumpFile( reportsDir, dumpFileName );
          dumpStreamFile = createDumpStreamFile( reportsDir, dumpFileName );
          String fileNameWithoutExtension =
              dumpFileName.contains( "." ) ? dumpFileName.substring( 0, dumpFileName.lastIndexOf( '.' ) ) : dumpFileName;
          binaryDumpStreamFile = newDumpFile( reportsDir, fileNameWithoutExtension + "-commands.bin" );
      }
  
      public synchronized File dumpException( Throwable t, String msg )
      {
          DumpFileUtils.dumpException( t, msg == null ? "null" : msg, dumpFile );
          return dumpFile;
      }
  
      public synchronized File dumpException( Throwable t )
      {
          DumpFileUtils.dumpException( t, dumpFile );
          return dumpFile;
      }
  
      public synchronized File dumpText( String msg )
      {
          DumpFileUtils.dumpText( msg == null ? "null" : msg, dumpFile );
          return dumpFile;
      }
  
      public synchronized File dumpStreamException( Throwable t, String msg )
      {
          DumpFileUtils.dumpException( t, msg == null ? "null" : msg, dumpStreamFile );
          return dumpStreamFile;
      }
  
      public synchronized File dumpStreamException( Throwable t )
      {
          DumpFileUtils.dumpException( t, dumpStreamFile );
          return dumpStreamFile;
      }
  
      public synchronized File dumpStreamText( String msg )
      {
          DumpFileUtils.dumpText( msg == null ? "null" : msg, dumpStreamFile );
          return dumpStreamFile;
      }
  
      public File getCommandStreamBinaryFile()
     {
         return binaryDumpStreamFile;
     }
 
     private File createDumpFile( File reportsDir, String dumpFileName )
     {
         return newDumpFile( reportsDir, dumpFileName + DUMP_FILE_EXT );
     }
 
     private File createDumpStreamFile( File reportsDir, String dumpFileName )
     {
         return newDumpFile( reportsDir, dumpFileName + DUMPSTREAM_FILE_EXT );
     }
 }