public static AsyncInputStream toAsyncInputStream(final InputStream inputStream) {
        notNull("inputStream", inputStream);
        return new AsyncInputStream() {
            @Override
            public void read(final ByteBuffer dstByteBuffer, final SingleResultCallback<Integer> callback) {
                notNull("dst", dstByteBuffer);
                notNull("callback", callback);
                if (!dstByteBuffer.hasRemaining()) {
                    callback.onResult(-1, null);
                    return;
                }

                int maxAmount = dstByteBuffer.remaining();
                byte[] bytes = new byte[maxAmount];
                int amountRead;
                try {
                    amountRead = inputStream.read(bytes);
                } catch (Throwable t) {
                    callback.onResult(null, new MongoGridFSException("Error reading from input stream", t));
                    return;
                }

                if (amountRead > 0) {
                    if (amountRead < maxAmount) {
                        byte[] dataRead = new byte[amountRead];
                        System.arraycopy(bytes, 0, dataRead, 0, amountRead);
                        dstByteBuffer.put(dataRead);
                    } else {
                        dstByteBuffer.put(bytes);
                    }
                }
                callback.onResult(amountRead, null);
            }

            @Override
            public void skip(final long bytesToSkip, final SingleResultCallback<Long> callback) {
                notNull("callback", callback);
                try {
                    long skipped = inputStream.skip(bytesToSkip);
                    callback.onResult(skipped, null);
                } catch (Throwable t) {
                    callback.onResult(null, t);
                }
            }

            @Override
            public void close(final SingleResultCallback<Void> callback) {
                try {
                    inputStream.close();
                } catch (Throwable t) {
                    callback.onResult(null, new MongoGridFSException("Error closing input stream", t));
                    return;
                }
                callback.onResult(null, null);
            }
        };
    }
public static AsyncInputStream toAsyncInputStream(final InputStream inputStream) {
        notNull("inputStream", inputStream);
        return new AsyncInputStream() {
            @Override
            public void read(final ByteBuffer dstByteBuffer, final SingleResultCallback<Integer> callback) {
                notNull("dst", dstByteBuffer);
                notNull("callback", callback);
                if (!dstByteBuffer.hasRemaining()) {
                    callback.onResult(-1, null);
                    return;
                }

                int maxAmount = dstByteBuffer.remaining();
                byte[] bytes = new byte[maxAmount];
                int amountRead;
                try {
                    amountRead = inputStream.read(bytes);
                } catch (Throwable t) {
                    callback.onResult(null, new MongoGridFSException("Error reading from input stream", t));
                    return;
                }

                if (amountRead > 0) {
                    if (amountRead < maxAmount) {
                        byte[] dataRead = new byte[amountRead];
                        System.arraycopy(bytes, 0, dataRead, 0, amountRead);
                        dstByteBuffer.put(dataRead);
                    } else {
                        dstByteBuffer.put(bytes);
                    }
                }
                callback.onResult(amountRead, null);
            }

            @Override
            public void skip(final long bytesToSkip, final SingleResultCallback<Long> callback) {
                notNull("callback", callback);
                try {
                    long skipped = inputStream.skip(bytesToSkip);
                    callback.onResult(skipped, null);
                } catch (Throwable t) {
                    callback.onResult(null, t);
                }
            }

            @Override
            public void close(final SingleResultCallback<Void> callback) {
                try {
                    inputStream.close();
                } catch (Throwable t) {
                    callback.onResult(null, new MongoGridFSException("Error closing input stream", t));
                    return;
                }
                callback.onResult(null, null);
            }
        };
    }
public static AsyncInputStream toAsyncInputStream ( final InputStream inputStream ) { notNull ( "inputStream" , inputStream ) ; return new AsyncInputStream ( ) { @ Override public void read ( final ByteBuffer dstByteBuffer , final SingleResultCallback < Integer > callback ) { notNull ( "dst" , dstByteBuffer ) ; notNull ( "callback" , callback ) ; if ( ! dstByteBuffer . hasRemaining ( ) ) { callback . onResult ( - 1 , null ) ; return ; } int maxAmount = dstByteBuffer . remaining ( ) ; byte [ ] bytes = new byte [ maxAmount ] ; int amountRead ; try { amountRead = inputStream . read ( bytes ) ; } catch ( Throwable t ) { callback . onResult ( null , new MongoGridFSException ( "Error reading from input stream" , t ) ) ; return ; } if ( amountRead > 0 ) { if ( amountRead < maxAmount ) { byte [ ] dataRead = new byte [ amountRead ] ; System . arraycopy ( bytes , 0 , dataRead , 0 , amountRead ) ; dstByteBuffer . put ( dataRead ) ; } else { dstByteBuffer . put ( bytes ) ; } } callback . onResult ( amountRead , null ) ; } @ Override public void skip ( final long bytesToSkip , final SingleResultCallback < Long > callback ) { notNull ( "callback" , callback ) ; try { long skipped = inputStream . skip ( bytesToSkip ) ; callback . onResult ( skipped , null ) ; } catch ( Throwable t ) { callback . onResult ( null , t ) ; } } @ Override public void close ( final SingleResultCallback < Void > callback ) { try { inputStream . close ( ) ; } catch ( Throwable t ) { callback . onResult ( null , new MongoGridFSException ( "Error closing input stream" , t ) ) ; return ; } callback . onResult ( null , null ) ; } } ; }
Converts a {@link InputStream} into a {@link AsyncInputStream}

@param inputStream the InputStream
@return the AsyncInputStream
Converts a { @link InputStream } into a { @link AsyncInputStream }