Mercurial > dive4elements > gnv-client
comparison doc/config-manual/overview.tex @ 938:2d84fc30ab58
Added more chapters in config-manual
doc/trunk@1079 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Hans Plum <hans.plum@intevation.de> |
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| date | Sun, 09 May 2010 18:19:53 +0000 |
| parents | |
| children | 9a28846dfb9c |
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| 937:052b8bba4f41 | 938:2d84fc30ab58 |
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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 The central concept of the artifact-server is to model the workflow of | |
| 15 users by the following steps: | |
| 16 \begin{enumerate} | |
| 17 \item selection of data (parameterization) | |
| 18 \item processing of result sets (interpolation, clipping) | |
| 19 \item exporting processed result sets (charts, statistics, raw data) | |
| 20 \end{enumerate} | |
| 21 | |
| 22 Within the artifact-server, these steps are supported by the following | |
| 23 core components for the entire GNV-system. The naming refers to | |
| 24 components used in the configuration. In order to simplify a first | |
| 25 orientation in the configuration and this manual, the XML-tags/words in | |
| 26 the central configuration file at {\tt conf/conf.xml} are used. They are | |
| 27 marked in {\tt typewriter} style: | |
| 28 | |
| 29 \begin{itemize} | |
| 30 \item {\tt geo-backend} -- access to the database backend | |
| 31 \item {\tt rest-server} -- providing a RESTful-Interface with a | |
| 32 XML-based protocol to serve the expert information systems (FIS) with | |
| 33 their products to different clients, e.g. GNV WebClient | |
| 34 \item {\tt factories/*}, {\tt artifacts/*} -- managing the steps and | |
| 35 operations of users' workflow for all expert information | |
| 36 systems (FIS) | |
| 37 \item {\tt gnv} -- processing pipeline providing results of the | |
| 38 products with the following subtasks: | |
| 39 \begin{itemize} | |
| 40 \item processing of result sets like interpolation, clipping | |
| 41 \item visualization of charts and maps | |
| 42 \item exporting selected raw data | |
| 43 \end{itemize} | |
| 44 \item {\tt mapserver} -- managing the Web Map Service for creating maps | |
| 45 dynamically | |
| 46 \end{itemize} | |
| 47 | |
| 48 Each component has a specific configuration for its functionality and | |
| 49 subsystems. | |
| 50 | |
| 51 \subsection{Internal Structure of the GNV-Server} | |
| 52 | |
| 53 \subsubsection{Internal Structure of Artifact-Server} | |
| 54 Per default the artifact-server can be found at {\tt | |
| 55 /opt/artifact-server}\footnote{Information about installation and | |
| 56 operation can be found in the admin-manual.}. The internal directory | |
| 57 structure of the artifact-server looks like this: | |
| 58 | |
| 59 %% tree /opt -d -L1 | |
| 60 \begin{lstlisting} | |
| 61 artifact-server | |
| 62 |-- artifactdb # storing artifacts in a database | |
| 63 |-- bin # binaries including all libraries | |
| 64 |-- cache # storage for cached data (e.g. result sets) | |
| 65 |-- conf # central configuration of artifact-server | |
| 66 |-- install # files for system integration (just for setup) | |
| 67 |-- mapfiles # generated configurations for map-server (done by | |
| 68 # map-generator) | |
| 69 `-- shapefiles # raw data for map generating (done by map-generator) | |
| 70 \end{lstlisting} | |
| 71 | |
| 72 | |
| 73 \subsubsection{Internal Structure of Mapserver} | |
| 74 Per default the mapserver can be found at {\tt | |
| 75 /usr/lib/cgi-bin}.\footnote{Information about installation and | |
| 76 operation can be found in the admin-manual.} The internal structure of | |
| 77 the mapserver looks like this: | |
| 78 | |
| 79 %% tree /usr/lib/ | |
| 80 \begin{lstlisting} | |
| 81 cgi-bin/ | |
| 82 |-- gnv-wms # wrapper pointing to the configuration (default: | |
| 83 # artifact-server/mapfiles/mapfile.map), invoked by | |
| 84 # webserver | |
| 85 `-- mapserv-gp # binary of mapserver, invoked by wrapper | |
| 86 \end{lstlisting} |