live_data_server

Data server for data plots

Containerization

The provided Dockerfile can be used to generated an image that contains the application (un-initialized state). To deploy this application locally for development, there are two options:

• Use the provided docker-compose.yml file to start a local private docker network where a postgresql database and the livedata application is served.
• Add the image to other docker-compose.yml where live-data-server is needed
  • make sure the other docker-compose.yml has a working database instance running before the live-data-server
  • make sure modify the database instance script to include the creation of the table needed by live-data-server
  • make sure passing the database related environment variables into the live-data-server container.

Test & Verification

There is no direct verification of functionality for the containerized live-data-server container due to its design. You can verify that the service is running by going to localhost:9999/admin after starting the application with docker-compose up. The log info should tell you that the live-data-server is properly initializing the database as well as the 400 error when trying to access localhost:9999/admin.

Deployment to the Test Environment

• Repository managing the provision for deployment:
  • hardware and networking for deployment: https://code.ornl.gov/sns-hfir-scse/infrastructure/neutrons-test-environment/-/blob/main/terraform/servers.tf#L85-97
  • configuration independent of source code changes: https://code.ornl.gov/sns-hfir-scse/infrastructure/neutrons-test-environment/-/blob/main/ansible/testfixture02-test.yaml
• Repository managing deployment of the source to the provisioned hardware: https://code.ornl.gov/sns-hfir-scse/deployments/livedata-deploy