Developer Guide
Tech Stack
The A1 Mediator is implemented in Golang.
Running A1 Standalone
The A1 container can be run standalone, which means using an in-memory mock version of SDL and a static route table. The host machine must have the RMR library and the environment must define the variable prometheus_multiproc_dir with a value like /tmp. Alternately, use the following command to run A1 as a Docker container, using a route table mounted as a file from this git repository and exposing the server’s HTTP port on the Docker host:
docker run -e USE_FAKE_SDL=True -p 10000:10000 -v `pwd`:/opt/route [DOCKER_IMAGE_ID_HERE]
Then test the server with an invocation such as this:
curl localhost:10000/A1-P/v2/healthcheck
Integration testing
This tests A1’s external API with three test receivers. This requires docker, kubernetes and helm.
Build all the images:
docker build -t a1:latest .
cd integration_tests/testxappcode
docker build -t delayreceiver:latest -f Dockerfile-delay-receiver .
docker build -t queryreceiver:latest -f Dockerfile-query-receiver .
docker build -t testreceiver:latest -f Dockerfile-test-receiver .
Then, run all the tests from the root (this requires the python packages tox
, pytest
, and tavern
).
tox -c tox-integration.ini
This script:
Deploys 3 helm charts (5 containers) into a local kubernetes installation
Port forwards a pod ClusterIP to localhost
Uses “tavern” to run some tests against the server
Barrages the server with Apache bench
Tears everything down