Seedlink to InfluxDB 2.x

sl2influx2.py is a python script which query data from a Seedlink server and send it to a InfluxDB 2.x database.

Installation

The best to do is to create a virtual environment with Python: python3 -m venv /path/to/new/virtual/environment

Then you have to activate the environment.

For Linux-based OS: source /path/to/new/virtual/environment/bin/activate

For Windows: \path\to\new\virtual\environment\Scripts\activate

Install the libraries with: pip install -r requirements.txt

Command

To launch the script, you open a terminal in the folder of sl2influx2.py. Be sure that your seedlink server is accessible and the bucket of influxDB 2.x you want to write in is WRTIE authorized with the Token.

Usage: python sl2influx2.py [-h] -s SERVER_SL [-p PORT_SL] -S SERVER_INFLUX [-P PORT_INFLUX] -b BUCKET -o ORG -t TOKEN

The following arguments are required: -s/--server-sl, -S/--server-influx, -b/--bucket, -o/--org, -t/--token. Default ports are respectively 18000 and 8086. You need to create a config file in the directory config/server/name.server.port.server.xml with the stations you want to read from the seedlink server. This config file has to be formatted in the stationXML standard (information on FDSN). An example is given on this repo for rtserver.ipgp.fr on port 18000.

Information

The data will be stored in the InfluxDB bucket precised in the command-line. The structure built ìn the bucket is _measurement='SEISMIC_DATA' ; _field='trace' ; location='NET.STA.LOC.CHA'.

In Flux language, to display the data of the station F.FDFM.00.BHZ with a window of 25ms

from(bucket: "rtserver-seismic")
  |> range(start: v.timeRangeStart, stop: v.timeRangeStop)
  |> filter(fn: (r) => r["_measurement"] == "SEISMIC_DATA")
  |> filter(fn: (r) => r["_field"] == "trace")
  |> filter(fn: (r) => r["location"] == "G.FDFM.00.BHZ")
  |> aggregateWindow(every: 25ms, fn: mean, createEmpty: true)
  |> yield(name: "mean")

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