public void handle(ChannelHandlerContext ctx, HttpRequest req)
throws IOException, URISyntaxException {
String op = params.op();
HttpMethod method = req.method();
if (PutOpParam.Op.CREATE.name().equalsIgnoreCase(op) && method == PUT) {
onCreate(ctx);
} else if (PostOpParam.Op.APPEND.name().equalsIgnoreCase(op) && method == POST) {
onAppend(ctx);
} else if (GetOpParam.Op.OPEN.name().equalsIgnoreCase(op) && method == GET) {
onOpen(ctx);
} else if (GetOpParam.Op.GETFILECHECKSUM.name().equalsIgnoreCase(op) && method == GET) {
onGetFileChecksum(ctx);
} else {
throw new IllegalArgumentException("Invalid operation " + op);
}
}
