GFBio Data Search

Description

The GFBio Dataset Search, built upon the Dai:Si Dataset Search UI, facilitates the exploration of datasets distributed and published across the GFBio data centers. It is an integral part of the GFBio Search and Harvesting Infrastructure, as depicted below.

Version

Current version: 1.0.0

See CHANGELOG.md for details on version history and changes.

Developer Guide

This section provides a guide for setting up and operating the GFBio Dataset Search for local development. It focuses on the local development stack, outlined in the Docker Compose file (docker-compose.yml). This file configures three main services: a Node Express API for the backend, an Angular application for the frontend, and an Elasticsearch index for indexing and retrieving search results.

Docker Stack

```yaml version: "3"

services: backend: build: context: . dockerfile: ./docker/backend/Dockerfile containername: gfbiosearchbackenddev envfile: - ./search/backend/.env ports: - "3000:3000" volumes: - ./search/backend:/backend networks: - customnetwork

frontend: build: context: . dockerfile: ./docker/frontend/Dockerfile.dev containername: gfbiosearchfrontenddev volumes: - ./search/frontend:/frontend ports: - "4200:4200" environment: - CHOKIDARUSEPOLLING=true networks: - customnetwork

index: image: docker.elastic.co/elasticsearch/elasticsearch:7.10.0 containername: gfbiosearchindexdev environment: - discovery.type=single-node ports: - "9200:9200" - "9300:9300" volumes: - esdata:/usr/share/elasticsearch/data networks: - custom_network ulimits: memlock: soft: -1 hard: -1 deploy: resources: limits: memory: 2g

volumes: esdata:

networks: custom_network: driver: bridge ```

To initiate the local development stack for the GFBio Dataset Search, perform the following three steps: copy the environment file for backend configuration from a template, build the Docker containers, and populate the Elasticsearch index with dummy data. These steps are automated by an 'init' command in the Makefile, executable on Linux and Unix-like systems. Execute the command from the base folder of the repository:

bash make init

For general operations within the local development environment, use docker-compose to start, stop, and rebuild containers:

bash docker-compose up

To rebuild the services, especially after changes to the Docker configuration:

bash docker-compose up --build

To stop the running services and clean up the local development environment:

bash docker-compose down

After starting the stack, access the frontend in your browser at:

localhost:4200

Modifications to the frontend source code will automatically trigger a browser reload, reflecting changes immediately. Changes to the backend code will automatically restart the Node server.

Note: When changing information in the backend environment file, you must rebuild the containers to apply the changes, as environment variables are set during build time.

Frontend and Backend Code

The backend and frontend code are located under the search folder:

search ├── backend │ ├── package.json │ ├── package-lock.json │ ├── README.md │ ├── server.js │ ├── src │ │ ├── ... │ └── tests ├── frontend │ ├── angular.json │ ├── dist │ │ └── DatasetSearch │ ├── karma.conf.js │ ├── package.json │ ├── package-lock.json │ ├── README.md │ ├── src │ │ ├── ... │ ├── tsconfig.app.json │ ├── tsconfig.json │ ├── tsconfig.spec.json │ └── tslint.json └── LICENSE

The Index

Information about the Elasticsearch index is located in the index folder and comprises the current mapping, the script to populate the index with dummy data and the sample data:

index ├── index_mapping.json ├── populate_index.sh └── sample_data.json

Contact Us

Please email any questions and comments to our Service Helpdesk (info@gfbio.org).

References

• Shafiei, F., Löffler, F., Thiel, S., Opasjumruskit, K., Grabiger, D., Rauh, P., König-Ries, B.: [Dai:Si] - A Modular Dataset Retrieval Framework with a Semantic Search for Biological Data, 2021. Link

Acknowledgements

• This work was supported by the German Research Foundation (DFG) within the project “Establishment of the National Research Data Infrastructure (NFDI)” in the consortium NFDI4Biodiversity (project number 442032008).
• This work was supported by the German Research Foundation (DFG) within the project "German Federation for Biological Data e.V.: Concept for a sustainable research data management of environmental data for Germany" (project number 408180549).