Mercurial > dive4elements > gnv-client
comparison doc/config-manual/overview.tex @ 949:11d8cc2deb92 1.0
merged doc/1.0
| author | Thomas Arendsen Hein <thomas@intevation.de> |
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| date | Fri, 28 Sep 2012 12:13:58 +0200 |
| parents | 9a28846dfb9c |
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| 899:3f9fc88aec2b | 949:11d8cc2deb92 |
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| 1 \section{Overview of the GNV-Server} | |
| 2 | |
| 3 \subsection{Tasks and Components of the GNV-Server} | |
| 4 | |
| 5 The GNV-server is a middleware-component and consists of two functional | |
| 6 components: | |
| 7 \begin{enumerate} | |
| 8 \item artifact-server -- providing access to the database and | |
| 9 managing the users' workflow to the GNV-WebClient | |
| 10 \item mapserver -- providing user-generated maps. Mapserver is | |
| 11 controlled by the artifact-server. | |
| 12 \end{enumerate} | |
| 13 | |
| 14 %% TODO includegraphics | |
| 15 | |
| 16 The central concept of the artifact-server is to model the workflow of | |
| 17 users by the following steps: | |
| 18 \begin{enumerate} | |
| 19 \item selection of data (parameterization) | |
| 20 \item processing of result sets (interpolation, clipping) | |
| 21 \item exporting processed result sets (charts, statistics, raw data) | |
| 22 \end{enumerate} | |
| 23 | |
| 24 Within the artifact-server, these steps are supported by the following | |
| 25 core components for the entire GNV-system. The naming refers to | |
| 26 components used in the configuration. In order to simplify a first | |
| 27 orientation in the configuration and this manual, the XML-tags/words in | |
| 28 the central configuration file at {\tt conf/conf.xml} are used. They are | |
| 29 marked in {\tt typewriter} style: | |
| 30 | |
| 31 \begin{itemize} | |
| 32 \item {\tt geo-backend} -- access to the database backend | |
| 33 \item {\tt rest-server} -- providing a RESTful-Interface with a | |
| 34 XML-based protocol to serve the expert information systems (FIS) with | |
| 35 their products to different clients, e.g. GNV WebClient | |
| 36 \item {\tt factories/*}, {\tt artifacts/*} -- managing the steps and | |
| 37 operations of users' workflow for all expert information | |
| 38 systems (FIS) | |
| 39 \item {\tt gnv} -- processing pipeline providing results of the | |
| 40 products with the following subtasks: | |
| 41 \begin{itemize} | |
| 42 \item processing of result sets like interpolation, clipping | |
| 43 \item visualization of charts and maps | |
| 44 \item exporting selected raw data | |
| 45 \end{itemize} | |
| 46 \item {\tt mapserver} -- managing the Web Map Service for creating maps | |
| 47 dynamically | |
| 48 \end{itemize} | |
| 49 | |
| 50 Each component has a specific configuration for its functionality and | |
| 51 subsystems. | |
| 52 | |
| 53 \subsection{Internal Structure of the GNV-Server} | |
| 54 | |
| 55 \subsubsection{Internal Structure of Artifact-Server} | |
| 56 Per default the artifact-server can be found at {\tt | |
| 57 /opt/artifact-server}\footnote{Information about installation and | |
| 58 operation can be found in the admin-manual.}. The internal directory | |
| 59 structure of the artifact-server looks like this: | |
| 60 | |
| 61 %% tree /opt -d -L1 | |
| 62 \begin{lstlisting} | |
| 63 artifact-server | |
| 64 |-- artifactdb # storing artifacts in a database | |
| 65 |-- bin # binaries including all libraries | |
| 66 |-- cache # storage for cached data (e.g. result sets) | |
| 67 |-- conf # central configuration of artifact-server | |
| 68 |-- install # files for system integration (just for setup) | |
| 69 |-- mapfiles # generated configurations for map-server (done by | |
| 70 # map-generator) | |
| 71 `-- shapefiles # raw data for map generating (done by map-generator) | |
| 72 \end{lstlisting} | |
| 73 | |
| 74 | |
| 75 \subsubsection{Internal Structure of Mapserver} | |
| 76 Per default the mapserver can be found at {\tt | |
| 77 /usr/lib/cgi-bin}.\footnote{Information about installation and | |
| 78 operation can be found in the admin-manual.} The internal structure of | |
| 79 the mapserver looks like this: | |
| 80 | |
| 81 %% tree /usr/lib/ | |
| 82 \begin{lstlisting} | |
| 83 cgi-bin/ | |
| 84 |-- gnv-wms # wrapper pointing to the configuration (default: | |
| 85 # artifact-server/mapfiles/mapfile.map), invoked by | |
| 86 # webserver | |
| 87 `-- mapserv-gp # binary of mapserver, invoked by wrapper | |
| 88 \end{lstlisting} |