public String copyBlob()

in blobstore/src/main/java/org/jclouds/blobstore/internal/BaseBlobStore.java [267:329]
58 lines of code
16 McCabe index (conditional complexity)

   public String copyBlob(String fromContainer, String fromName, String toContainer, String toName,
         CopyOptions options) {
      Blob blob = getBlob(fromContainer, fromName);
      if (blob == null) {
         throw new KeyNotFoundException(fromContainer, fromName, "while copying");
      }

      String eTag = blob.getMetadata().getETag();
      if (eTag != null) {
         eTag = maybeQuoteETag(eTag);
         if (options.ifMatch() != null && !maybeQuoteETag(options.ifMatch()).equals(eTag)) {
            throw returnResponseException(412);
         }
         if (options.ifNoneMatch() != null && maybeQuoteETag(options.ifNoneMatch()).equals(eTag)) {
            throw returnResponseException(412);
         }
      }

      Date lastModified = blob.getMetadata().getLastModified();
      if (lastModified != null) {
         if (options.ifModifiedSince() != null && lastModified.compareTo(options.ifModifiedSince()) <= 0) {
            throw returnResponseException(412);
         }
         if (options.ifUnmodifiedSince() != null && lastModified.compareTo(options.ifUnmodifiedSince()) >= 0) {
            throw returnResponseException(412);
         }
      }

      InputStream is = null;
      try {
         is = blob.getPayload().openStream();
         BlobBuilder.PayloadBlobBuilder builder = blobBuilder(toName)
               .payload(is);
         Long contentLength = blob.getMetadata().getContentMetadata().getContentLength();
         if (contentLength != null) {
            builder.contentLength(contentLength);
         }

         ContentMetadata metadata;
         if (options.contentMetadata() != null) {
            metadata = options.contentMetadata();
         } else {
            metadata = blob.getMetadata().getContentMetadata();
         }
         builder.cacheControl(metadata.getCacheControl())
               .contentDisposition(metadata.getContentDisposition())
               .contentEncoding(metadata.getContentEncoding())
               .contentLanguage(metadata.getContentLanguage())
               .contentType(metadata.getContentType());

         Map<String, String> userMetadata = options.userMetadata();
         if (userMetadata != null) {
            builder.userMetadata(userMetadata);
         } else {
            builder.userMetadata(blob.getMetadata().getUserMetadata());
         }
         return putBlob(toContainer, builder.build());
      } catch (IOException ioe) {
         throw Throwables.propagate(ioe);
      } finally {
         Closeables2.closeQuietly(is);
      }
   }