Enable/Configure fdsnws for querying the SC3 server for station metadata and waveform data

[niketchhajed]

Enable/Configure fdsnws for querying the SC3 server for station metadata and waveform data.

[niketchhajed]

Have explored this area. After some analysis, have lodged the following quesiton with the gempa support team: https://support.gempa.de/issues/819

[niketchhajed]

1. Updated the gempa support ticket: https://support.gempa.de/issues/819 with the resolution/fix. Re-describing the fix below just in case:

"I could resolve this issue. The solution was that the configuration "plugins = ${plugins}, fdsnxml" needs to be explicitly done again in /opt/seiscomp3/etc/fdsnws.cfg.

The reason is: Although, it is done in /opt/seiscomp3/etc/defaults/fdsnws.cfg, it probably gets overridden in /opt/seiscomp3/etc/global.cfg with "plugins = rsas,saic,mapprojections,spickdbg,mbtiles,locnll,hypo71,mlh,mlr,md"

Thanks"

2. Also, apart from the configurations described at: http://knmi.orfeus-eu.org/documents/Bucharest2015/23Sept2015_07_J.Quinteros-The_fdsnws_server_in_SeisComP.pdf, there is an additional setup step without which the fdsnws server will not come up: the package "twisted" needs to be installed before starting the fdsnws service.

sudo pip install twisted

[niketchhajed]

Closing this issue as we are able to setup fdsnws and query for waveform data as well as station metadata.