Configuration

Runtime configuration files reference

The Runtime uses JSON configuration files. The files are mounted to the .dolittle/ folder inside the Docker image.

Configuration file Required
tenants.json ✔️
resources.json ✔️
event-horizon-consents.json ✔️
microservices.json ️
metrics.json
endpoints.json

tenants.json

Required. Defines each Tenant in the Runtime.

{
    <tenant-id>: {}
}

resources.json

Required. Configurations for the Event Store, Projections and Embeddings per Tenant. The "database" has to be unique for each store.

{
    <tenant-id>: {
        "eventStore": {
            "servers": [
                <MongoDB connection URI>
            ],
            "database": <MongoDB database name>,
            // defaults to 1000. MongoDB max connection amount
            "maxConnectionPoolSize": 1000
        },
        "projections": {
            "servers": [
                <MongoDB connection URI>
            ],
            "database": <MongoDB database name>,
            // defaults to 1000. MongoDB max connection amount
            "maxConnectionPoolSize": 1000
        },
        "embeddings": {
            "servers": [
                <MongoDB connection URI>
            ],
            "database": <MongoDB database name>,
            // defaults to 1000. MongoDB max connection amount
            "maxConnectionPoolSize": 1000
        },
    }
}

event-horizon-consents.json

Required. Defines the Consents a Producer tenant gives to Consumers so that they can receive events over the Event Horizon.

{
    // The producer tenant that gives the consent
    <tenant-id>: [
        {
            // the consumers microservice and tenant to give consent to
            "microservice": <microservice-id>,
            "tenant": <tenant-id>,
            // the producers public stream and partition to give consent to
            "stream": <stream-id>,
            "partition": <partition-id>,
            // an identifier for this consent 
            "consent": <consent-id>
        }
    ]
}

microservices.json

Defines where the Producer microservices are so that the Consumer can Subscribe to them.

{
    // the id of the producer microservice
    <microservice-id>: {
        // producer microservices Runtime host and public port
        "host": <host>,
        "port": <port>
    }
}

endpoints.json

Defines the private and public ports for the Runtime.

{
    "public": {
        // default 50052
        "port": <port>
    },
    "private": {
        // default 50053
        "port": <port>
    }
}

metrics.json

The port to expose the Prometheus Runtimes metrics server on.

{
    // default 9700
    "Port": <port>
}