Question

可能重复：
Process dies when trying to put InputStream to Amazon S3

我的API有方法OutputStream getOutputStream(String id)
此API有两个具体实施 - FileService和S3Service
我有一个执行以下操作的documentManager

public void putDocument(@Nonnull final Document document) throws IllegalArgumentException, PersistenceException {
        final OutputStream stream = persistenceService.getOutputStream(document.getUniqueId());
        try {
            jaxbContext.createMarshaller().marshal(document, stream);
        } catch (final JAXBException e) {
            LOGGER.error(e.getMessage(), e);
            throw new PersistenceException("Failed to marshall document " + document.getUniqueId() + ": " + e.getMessage(), e);
        } finally {
            try {
                stream.close();
            } catch (IOException e) {
                throw new PersistenceException("Failed to close output stream for " + document.getUniqueId());
            }
        }
    }

其中DocumentManager写入persistenceService返回的outputStream

此实施适用于FileService
使用S3Service，我们必须将此OutputStream转换为InputStream以符合Amazon S3 API（here）

所以我在S3Service.getOutputStream

中进行了跟踪

public OutputStream getOutputStream(@Nonnull final String uniqueId) throws PersistenceException {
     final PipedOutputStream outputStream = new PipedOutputStream();
     final PipedInputStream inputStream;
     try {
         inputStream = new PipedInputStream(outputStream);
         new Thread(
                 new Runnable() {
                     @Override
                     public void run() {
                         ObjectMetadata objectMetadata = new ObjectMetadata();
                         objectMetadata.setContentType("application/octet-stream");
                         PutObjectRequest putObjectRequest = new     PutObjectRequest("haritdev.sunrun", "sample.file.key",
                                     inputStream, objectMetadata);
                         PutObjectResult result =      amazonS3Client.putObject(putObjectRequest);
                         LOGGER.info("result - " + result.toString());
                         try {
                             inputStream.close();
                         } catch (IOException e) {

                         }
                     }
                 }
         ).start();
     } catch (AmazonS3Exception e) {
         throw new PersistenceException("could not generate output stream for " + uniqueId, e);
     } catch (IOException e) {
         throw new PersistenceException("could not generate input stream for S3 for " + uniqueId, e);
     }
      try {
         return new GZIPOutputStream(outputStream);
     } catch (IOException e) {
         LOGGER.error(e.getMessage(), e);
         throw new PersistenceException("Failed to get output stream for " + uniqueId + ": " + e.getMessage(), e);
     }
 }

当我调试这个时，我发现进程在一段时间后就会死掉并且没有写入文档，这个实现是不正确的？

这个线程示例有什么问题？

0 个答案: