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 com.cloud.storage.template;
  
  import java.io.BufferedInputStream;
  import java.io.BufferedOutputStream;
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.IOException;
  import java.net.MalformedURLException;
  import java.net.URL;
  import java.net.URLConnection;
  import java.util.Date;
  
  import org.apache.logging.log4j.Logger;
  import org.apache.logging.log4j.LogManager;
  
  public class FtpTemplateUploader implements TemplateUploader {
  
      protected Logger logger = LogManager.getLogger(getClass());
      public TemplateUploader.Status status = TemplateUploader.Status.NOT_STARTED;
      public String errorString = "";
      public long totalBytes = 0;
      public long entitySizeinBytes;
      private String sourcePath;
      private String ftpUrl;
      private UploadCompleteCallback completionCallback;
      private BufferedInputStream inputStream = null;
      private BufferedOutputStream outputStream = null;
      private static final int CHUNK_SIZE = 1024 * 1024; //1M
  
      public FtpTemplateUploader(String sourcePath, String url, UploadCompleteCallback callback, long entitySizeinBytes) {
  
          this.sourcePath = sourcePath;
          ftpUrl = url;
          completionCallback = callback;
          this.entitySizeinBytes = entitySizeinBytes;
  
      }
  
      @Override
      public long upload(UploadCompleteCallback callback) {
  
          switch (status) {
              case ABORTED:
              case UNRECOVERABLE_ERROR:
              case UPLOAD_FINISHED:
                  return 0;
              default:
  
          }
  
          new Date();
  
          StringBuffer sb = new StringBuffer(ftpUrl);
          // check for authentication else assume its anonymous access.
          /* if (user != null && password != null)
                   {
                      sb.append( user );
                      sb.append( ':' );
                      sb.append( password );
                      sb.append( '@' );
                   }*/
          /*
           * type ==> a=ASCII mode, i=image (binary) mode, d= file directory
           * listing
           */
          sb.append(";type=i");
  
          try {
              URL url = new URL(sb.toString());
              URLConnection urlc = url.openConnection();
              File sourceFile = new File(sourcePath);
              entitySizeinBytes = sourceFile.length();
  
              outputStream = new BufferedOutputStream(urlc.getOutputStream());
              inputStream = new BufferedInputStream(new FileInputStream(sourceFile));
  
              status = TemplateUploader.Status.IN_PROGRESS;
  
              int bytes = 0;
              byte[] block = new byte[CHUNK_SIZE];
              boolean done = false;
              while (!done && status != Status.ABORTED) {
                  if ((bytes = inputStream.read(block, 0, CHUNK_SIZE)) > -1) {
                      outputStream.write(block, 0, bytes);
                      totalBytes += bytes;
                  } else {
                      done = true;
                  }
              }
              status = TemplateUploader.Status.UPLOAD_FINISHED;
              return totalBytes;
          } catch (MalformedURLException e) {
              status = TemplateUploader.Status.UNRECOVERABLE_ERROR;
              errorString = e.getMessage();
              logger.error(errorString);
          } catch (IOException e) {
              status = TemplateUploader.Status.UNRECOVERABLE_ERROR;
              errorString = e.getMessage();
              logger.error(errorString);
          } finally {
              try {
                  if (inputStream != null) {
                      inputStream.close();
                  }
                  if (outputStream != null) {
                      outputStream.close();
                  }
              } catch (IOException ioe) {
                  logger.error(" Caught exception while closing the resources");
              }
              if (callback != null) {
                  callback.uploadComplete(status);
              }
          }
  
          return 0;
      }
  
      @Override
      public void run() {
          try {
              upload(completionCallback);
          } catch (Throwable t) {
              logger.warn("Caught exception during upload " + t.getMessage(), t);
              errorString = "Failed to install: " + t.getMessage();
              status = TemplateUploader.Status.UNRECOVERABLE_ERROR;
          }
  
      }
  
      @Override
      public Status getStatus() {
          return status;
      }
  
      @Override
      public String getUploadError() {
          return errorString;
      }
  
      @Override
      public String getUploadLocalPath() {
          return sourcePath;
      }
  
      @Override
      public int getUploadPercent() {
          if (entitySizeinBytes == 0) {
              return 0;
          }
          return (int)(100.0 * totalBytes / entitySizeinBytes);
      }
  
      @Override
      public long getUploadTime() {
          // TODO
          return 0;
      }
  
      @Override
      public long getUploadedBytes() {
          return totalBytes;
      }
  
      @Override
      public void setResume(boolean resume) {
  
      }
  
      @Override
      public void setStatus(Status status) {
          this.status = status;
      }
  
      @Override
      public void setUploadError(String string) {
          errorString = string;
      }
  
      @Override
      public boolean stopUpload() {
          switch (getStatus()) {
              case IN_PROGRESS:
                  try {
                      if (outputStream != null) {
                          outputStream.close();
                      }
                      if (inputStream != null) {
                          inputStream.close();
                      }
                  } catch (IOException e) {
                      logger.error(" Caught exception while closing the resources");
                  }
                  status = TemplateUploader.Status.ABORTED;
                  return true;
              case UNKNOWN:
              case NOT_STARTED:
              case RECOVERABLE_ERROR:
              case UNRECOVERABLE_ERROR:
              case ABORTED:
                  status = TemplateUploader.Status.ABORTED;
              case UPLOAD_FINISHED:
                  return true;
  
              default:
                  return true;
          }
      }
  
  }
  