THIS IS WORK IN PROGRESS AND CAN CHANGE ANY TIME 
At the moment we are developing a simple plugin for odysseus.
To try the current state you could use the following docker file:
FROM node:14 as node-base RUN echo "Installing required packages..." && \ apt-get update && \ apt-get install -yq --no-install-recommends python RUN echo "Cloning Odysseus Grafana plugin source..." && \ git clone https://git.swl.informatik.uni-oldenburg.de/scm/api_apps/grafana.git /var/lib/ody_grafana WORKDIR /var/lib/ody_grafana/grafana-plugins/odysseus RUN mkdir build RUN echo "Building Odysseus Grafana plugin binaries..." && \ yarn install && \ yarn dev FROM grafana/grafana:7.4.3 AS grafana RUN echo "Copying Odysseus Grafana plugin binaries..." COPY --from=node-base /var/lib/ody_grafana/grafana-plugins/odysseus /var/lib/grafana/plugins/ody-streaming-datasource WORKDIR /usr/share/grafana USER grafana ENTRYPOINT [ "/run.sh" ] |
Use this:
docker build . -t grafana docker run -d -p 3000:3000 --name grafana grafana |
Then you could use Odysseus in grafana as a datasource.
You will need to provide the server-adress: e.g. with ws://localhost:8888/
ATM there are some shotcommings that will be removed in future versions:
You will need to determine the websocket address manually by using a webbrowser (we recommend Firefox because of better JSON presentation) (http://localhost:8888/queries/<nr>) and find the section websockets with protocol JSON and use the entry with uri for creating panels in grafana:
The output of the connected query
The video can also be found here https://odysseus.informatik.uni-oldenburg.de/download/documentation/videos/grafana/odysseus_grafana_tutorial.mp4
In addition, here is a brief READ.ME.
We need a grafana plugin to be able to receive data from Odysseus. Note that the current state of the plugin is experimental. Wiki-Page: https://wiki.odysseus.informatik.uni-oldenburg.de/display/ODYSSEUS/Grafana Requirements: docker 1. build a docker image based on the dockerfile in this folder docker build . -t grafana 2. build and run a docker container based on the created image docker run -d -p 3000:3000 --name grafana grafana 3. open grafana in a browser localhost:3000 username: admin password: admin 4. Add an Odysseus datasource Requirements: Running Odysseus Server (or monolithic of course) Configuration -> Data Sources Select Others -> odysseus Server URI: ws://localhost:8888/ (REST-port of a (here local) odysseus server) Leave API Key empty 5. Create Dashboard Create -> Dashboard 6. Create Panel Requirements: * To visualize single datastream attributes, there must be an operator that provides only the current timestamp named "time" and that attribute * To easily find the operator, give him a proper name * Query(s) should be installed Tipps: a) At the end of the query, create for each attribute you want to visualize a projection on "time" and the attribute b) Grafana can display historical values but to show the results in real-time, the timestamps of the results should be set to the current time (necessary if you, e.g., read from a CSV file with old timestamps) 6.1. select your Odysseus datasource as datasource 6.2. you need a websocket that provides the data 6.3. open in a browser localhost:8888/queries to get information about all installed queries (in chrome it is not formatted; copy the content in, e.g., https://jsonformatter.curiousconcept.com/) 6.4. find the websocket in the json go to the query id of your query -> rootOperators -> go to the operator providing the data to visualize -> ports -> websockets -> copy the JSON uri 6.5. Insert the copied URI in grafana into the websocket field of the panel query 6.6. Click on apply and after that on save dashboard |
See https://grafana.com/docs/grafana/latest/developers/plugins/
and https://grafana.com/docs/grafana/latest/developers/plugins/build-a-streaming-data-source-plugin/ for further information how to extend the current implementation.