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\documentclass[c]{beamer}
%\usepackage{helvet}
\usepackage{calc}
\usepackage[utf8]{inputenc} % set your input encoding differently, if you want
\usepackage[english]{babel}
\usepackage{listings}
\usepackage{wrapfig}
\usepackage{fancyvrb}
\usepackage{enumitem}
\usepackage{eurosym}
\usepackage{tikz}
\usepackage{pgfgantt}
\usepackage{amsmath,amssymb}
\usetikzlibrary{shapes,arrows,fit}
\usetikzlibrary{positioning}
\usetikzlibrary{calc}
\usepackage[absolute,overlay]{textpos}
%\setbeameroption{show notes}
\setlist[itemize]{label=$\bullet$}
\def\checkmark{\tikz\fill[scale=0.4](0,.35) -- (.25,0) -- (1,.7) -- (.25,.15) -- cycle;}
\setbeamertemplate{navigation symbols}{}
%\setbeamercovered{transparent=10}
\setbeamertemplate{navigation symbols}{\url{taler.net}}
%\setbeamertemplate{section in toc}[sections numbered]
% Adapt title information
% =======================
\title{GNU Twister \\ Easy C instrumentation and programmable proxy}
\institute{Taler Systems SA}
\author{Christian Grothoff ({\tt christian@grothoff.org}) \\
Marcello Stanisci ({\tt stanisci.m@gmail.com})}
\date{10.9.2018}
% Some common packages
% ====================
\usepackage{units}
\usepackage{amsbsy}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{graphics}
\usepackage{epsf}
\usepackage{epsfig}
\usepackage{fixmath}
\usepackage{wrapfig}
\usetikzlibrary{snakes}
\begin{document}
\begin{frame}
\titlepage
\end{frame}
\begin{frame}
\frametitle{Overall architecture}
% Overall architecture where Twister applies:
% HTTP client, HTTP server, REST API,
% focus on JSON as interchange format
\begin{center}
\includegraphics[width=0.66\textwidth]{Whole.png}
\end{center}
\end{frame}
\begin{frame}[fragile]
\frametitle{HTTP proxy}
% Twister HTTP proxy (between client and server)
\begin{center}
\includegraphics[width=0.66\textwidth]{Whole-NoDriver.png}
\end{center}
\begin{Verbatim}[fontsize=\tiny]
# twister.conf
[twister]
# listens here
HTTP_PORT = 8888
# forwards there
DESTINATION_BASE_URL = http://localhost:8080
..
\end{Verbatim}
\end{frame}
\begin{frame}[fragile]
\frametitle{Driving it}
% Test driver (below) controlling client,
% twister and server to drive test execution
\begin{center}
\includegraphics[width=0.66\textwidth]{Whole-NoClientServer.png}
\end{center}
\begin{columns}[T,onlytextwidth]
\begin{column}{.5\textwidth}
\begin{minipage}{\textwidth}
\begin{Verbatim}[fontsize=\tiny]
# twister.conf
[twister]
# Control channel.
UNIXPATH = /tmp/taler-service-twister.sock
..
\end{Verbatim}
\end{minipage}
\end{column}
\begin{column}{.5\textwidth}
\begin{minipage}{\textwidth}
\begin{Verbatim}[fontsize=\tiny]
# CLI
$ taler-twister -c twister.conf \
--flip-ul=child.one
\end{Verbatim}
\end{minipage}
\end{column}
\end{columns}
\end{frame}
\begin{frame}[fragile]
\frametitle{Driving it (Libtalertwister)}
% libtalertwister: control API examples (giving Twister commands
% to twist next request/response)
\begin{textblock*}{2cm}(7cm,1cm)
\includegraphics[scale=0.09]{Whole-NoClientServer.png}
\end{textblock*}
{\tiny
\begin{lstlisting}[language=C,basicstyle=\footnotesize,keywordstyle=\color{blue}]
#include <taler/taler_twister_service.h>
handle = TALER_TWISTER_connect (CONFIG);
/* Issue char-flipping command */
TALER_TWISTER_flip_upload (handle,
"child.one",
&callback,
NULL);
// ...
TALER_TWISTER_disconnect (handle);
\end{lstlisting}
}
\end{frame}
\end{document}
|
