/**
* Reads the POST contents of the request and parses it into an Annotation object, ready to be
* annotated. This method can also read a serialized document, if the input format is set to be
* serialized.
*
* @param props The properties we are annotating with. This is where the input format is retrieved
* from.
* @param httpExchange The exchange we are reading POST data from.
* @return An Annotation representing the read document.
* @throws IOException Thrown if we cannot read the POST data.
* @throws ClassNotFoundException Thrown if we cannot load the serializer.
*/
private Annotation getDocument(Properties props, HttpExchange httpExchange)
throws IOException, ClassNotFoundException {
String inputFormat = props.getProperty("inputFormat", "text");
switch (inputFormat) {
case "text":
return new Annotation(
IOUtils.slurpReader(new InputStreamReader(httpExchange.getRequestBody())));
case "serialized":
String inputSerializerName =
props.getProperty("inputSerializer", ProtobufAnnotationSerializer.class.getName());
AnnotationSerializer serializer = MetaClass.create(inputSerializerName).createInstance();
Pair<Annotation, InputStream> pair = serializer.read(httpExchange.getRequestBody());
return pair.first;
default:
throw new IOException("Could not parse input format: " + inputFormat);
}
}
