Examples with BoundedInputStream io.pravega.common.io.BoundedInputStream used on opensource projects

Example 1 with BoundedInputStream

use of io.pravega.common.io.BoundedInputStream in project pravega by pravega.

the class DataFrame method read.

// endregion
// region Reading
/**
 * Interprets the given InputStream as a DataFrame and returns a DataFrameEntryIterator for the entries serialized
 * in it.
 *
 * @param source  The InputStream to read from.
 * @param length  The size of the inputStream.
 * @param address The DataFrame's address.
 * @return A new DataFrameEntryIterator.
 * @throws IOException If unable to parse the DataFrame's header from the InputStream.
 */
public static DataFrameEntryIterator read(InputStream source, int length, LogAddress address) throws IOException {
    // Check to see that we have enough bytes in the InputStream.
    ReadFrameHeader header = new ReadFrameHeader(source);
    if (length < ReadFrameHeader.SERIALIZATION_LENGTH + header.getContentLength()) {
        throw new SerializationException(String.format("Given buffer has insufficient number of bytes for this DataFrame. Expected %d, actual %d.", ReadFrameHeader.SERIALIZATION_LENGTH + header.getContentLength(), length));
    }
    BoundedInputStream contents = new BoundedInputStream(source, header.getContentLength());
    return new DataFrameEntryIterator(contents, address, ReadFrameHeader.SERIALIZATION_LENGTH);
}