hans@926: \subsection{Artifact-Server}
hans@926: The Artifact-Server contains the entire business logic of the system.
hans@926: The server provides a RESTful interface with a XML-based protocol to the
hans@926: webclient. Technically the server is a standalone java process serving the
hans@926: REST interface.
hans@926: 
hans@926: \subsubsection*{Installation}
hans@926: \label{ref:artifact-server-install}
hans@926: 
hans@926: Running the server with its own user\footnote{Remark: A group with the
hans@926: same name is created automatically.}: 
hans@926: \begin{lstlisting}
hans@926:   adduser artifacts
hans@926: \end{lstlisting}
hans@926: 
hans@926: Setup and configuring logging:
hans@926: \begin{lstlisting}
hans@926:   cd /var/log
hans@926:   mkdir artifacts
hans@926:   chmod 770 artifacts
hans@926:   chmod g+s artifacts
hans@926: \end{lstlisting}
hans@926: 
hans@926: The log level can be adjusted in the file \verb+ conf/log4j.properties+.
hans@926: Further information can be found there.
hans@926: 
hans@926: Integrate software of artifact-server into filesystem:
hans@926: \begin{lstlisting}
hans@926:   cd /opt
hans@926:   tar xfvj /root/artifact-server-$VERSION.tar.bz2
hans@926:   ln -s artifact-server-$VERSION artifact-server
hans@926:   cd artifact-server
hans@926: \end{lstlisting}
hans@926: 
hans@926: Setting the access rights:
hans@926: \begin{lstlisting}
hans@926:    bin/setup.sh
hans@926: \end{lstlisting}
hans@926: 
hans@926: Configure connection to database:
hans@926: \begin{lstlisting}
hans@926:   cd /opt/artifact-server
hans@926:   vim conf/arcsdeconnectionpool.properties
hans@926:   
hans@926:   # in conf/arcsdeconnectionpool.properties do:
hans@926:   server=xyz.server.com
hans@926:   username=guest
hans@926:   credentials=XYZ
hans@926:   port=5151
hans@926:   database=esri_sde
hans@926: \end{lstlisting}
hans@926: 
hans@926: Configure address for finding the WMS-Server:
hans@926: \begin{lstlisting}
hans@926:   cd /opt/artifact-server/
hans@926:   vim conf/conf.xml
hans@926:   # adapt the address in the element
hans@926:   # artifact-database/gnv/mapserver/server. This is
hans@926:   # the string the server uses to provide an address of the mapserver to enduser.
hans@928:   e.g. http://SERVER/cgi-bin/gnv-wms
hans@926: \end{lstlisting}
hans@926: 
hans@926: The artifact server can export and import projects of the user's
hans@926: parameterizations. In order to protect the server against invalid files,
hans@926: configure a secret for signing artifacts.
hans@926: 
hans@926: {\em Hint: If the secret is changed, all files that were created before
hans@926: are not valid anymore.}
hans@926: 
hans@926: \begin{lstlisting}
hans@926:   # generate a randomized string, e.g.
hans@926:   cd /opt/artifact-server/
hans@926:   pwgen -s 30
hans@926:   # populate the tag artifact-database/export-secret
hans@926: \end{lstlisting}
hans@926: 
hans@926: Adapt TCP-port of artifact-server, if the default has to be changed
hans@926: (default:8181):
hans@926: \begin{lstlisting}
hans@926:   cd /opt/artifact-server
hans@926:   vim conf/conf.xml
hans@926:   
hans@926:   # in conf/conf.xml edit the element artifact-database/rest-server/port
hans@926: \end{lstlisting}
hans@926: 
hans@926: Integrate artifact-server in startup-process of operating system:
hans@926: \begin{lstlisting}
hans@926:   cp -i /opt/artifact-server/bin/debian/artifact-server /etc/init.d/
hans@926:   chmod +x /etc/init.d/artifact-server
hans@926:   update-rc.d artifact-server defaults
hans@926: \end{lstlisting}
hans@926: 
hans@926: The server can be started and stopped via
hans@926: \begin{lstlisting}
hans@926:   /etc/init.d/artifact-server {start | stop}
hans@926: \end{lstlisting}
hans@926: 
hans@926: The installation of the artifact-server is finished. It can be tested
hans@926: now.
hans@926: 
hans@926: \subsubsection*{Test of the Installation}
hans@926: \label{ref:artifact-server-testing}
hans@926:   Start the server:
hans@926:   \begin{lstlisting}
hans@926:   /etc/init.d/artifact-server start
hans@926:   \end{lstlisting}
hans@926:   
hans@926:   1. Operating System: Check if the process of the server called "App"
hans@926:   is running:
hans@926:   \begin{lstlisting}
hans@926:   jps
hans@926:   
hans@926:   # Example with list of java processes:
hans@926:   19252
hans@926:   19509 Jps
hans@926:   19441 App
hans@926: 
hans@926:   cat /var/run/artifact-server
hans@926:   \end{lstlisting}
hans@926: 
hans@926:   Task: Compare the running process numbers.
hans@926: 
hans@926:   2. Network: Check if the artifact-server opens a TCP-port (default: 8181)
hans@926:   \begin{lstlisting}
hans@926:   netstat -nltp
hans@926:   
hans@926:   # Check for an entry like:
hans@926:   tcp        0      0 127.0.0.1:8181          0.0.0.0:*  LISTEN 18648/java
hans@926:   \end{lstlisting}
hans@926: 
hans@926:   3. Artifact-Server ready for communication with client?
hans@926:   \begin{lstlisting}
hans@926:   curl "http://localhost:8181/factories" | xmllint --format -
hans@926:   \end{lstlisting}
hans@926:   
hans@926:   Task: Check for a XML-document describing possible expert information
hans@926:   systems (FIS)