MongoDB example

This example contains everything you need to use MongoDB as the source for your flags.

As you can see the main.go file contains a basic HTTP server that expose an API that use your flags.

How to setup the example

All commands should be run in the root level of the repository.

1. Load all dependencies

make vendor

2. Run the MongoDB container provided in the docker-compose.yml file:

docker compose -f ./example/retriever_mongodb/docker-compose.yml up

3. Connect to the MongoDB container using MongoDB Compass or any other tool using the following connection string: mongodb://root:[email protected]:27017/

4. Create the appConfig database and the featureFlags collection within it. After this, insert a JSON flag definition below, where the flag key has the feature flag name as value.

[
    {
        "flag": "new-admin-access",
        "variations": {
            "default_var": false,
            "false_var": false,
            "true_var": true
        },
        "defaultRule": {
            "percentage": {
                "false_var": 70,
                "true_var": 30
            }
        }
    },
    {
        "flag": "flag-only-for-admin",
        "variations": {
            "default_var": false,
            "false_var": false,
            "true_var": true
        },
        "targeting": [
            {
                "query": "admin eq true",
                "percentage": {
                    "false_var": 0,
                    "true_var": 100
                }
            }
        ],
        "defaultRule": {
            "variation": "default_var"
        }
    }
]

5. Run the example app to visualize the flags being evaluated

go run ./examples/retriever_mongodb/main.go

6. Play with the values in the configured MongoDB documents to see different outputs