Simulator for providing AirQuality Data to FIWARE platforms like fiware-ops/marinera.
Configuration can be done via the Micronaut standard mechanisms, e.g. application.yaml and environment-variables. Since list-configuration is better readable in yaml, the application.yaml is the recommended way to do it.
| Property | Description | Default |
|---|---|---|
| general.brokerUrl | Url of the broker to send the data to | http://localhost:1026 |
| general.historicDensity | Minutes between the data points generated for historical data. | 15 |
| general.startupDelay | Seconds before the simulation starts. Can be used to avoid downstream race-conditions. | 120 |
| general.fiwareService | Fiware-Service for sending the data | empty |
| general.fiwareServicePath | Fiware-ServicePath for sending the data | / |
| general.aqSimulations[] | List of aq Simulations to be created | [] |
| general.aqSimulations[0].id | Id to be used for the simulation. Will be generated if not provided. | null |
| general.aqSimulations[0].name | Name to be used for the simulation. | test-device |
| general.aqSimulations[0].lat | Latitude of the aquality data. | 38.07 |
| general.aqSimulations[0].longi | Longitude of aq Simulations to be created | -1.271 |
| general.aqSimulations[0].sampleInterval | Sample interval of the datapoints in seconds | 30 |
| general.aqSimulations[0].age | Number of days to generate the historical data for.(e.g. today - age) | 10 |
| keycloak.enabled | Should the simulation add auth-tokens from keycloak? | false |
| keycloak.clientId | ClientId to be used at keycloak | null |
| keycloak.clientSecret | ClientSecret to be used at keycloak | null |
| keycloak.username | Username to be used at keycloak | null |
| keycloak.password | Password to be used at keycloak | null |
| keycloak.realm | Realm to be used at keycloak | null |
| keycloak.url | URL of keycloak | null |
Execution can be done via docker:
docker run -v $(pwd)/application.yaml:/etc/sim/application.yaml -e MICRONAUT_CONFIG_FILES=/etc/sim/application.yaml quay.io/fiware/airquality-simulatorThe simulator is able to execute its simulation directly against the NGSI Api, but also in a secured way through the PEP-Proxy. The simulator currently supports the retrieval of user-tokens from Keycloak and transparently adds them to the requests.
The flow looks as following(everything in green is added when keycloak.enabled=true):
Be aware, that general.brokerUrl needs to be the url of the PEP-Proxy in the secured case. Else, no policy enforcement can happen.
For QuantumLeap to receive all the data, a subscription has to be setup. To do that, an image for creating the subscription is provided.
The image is available at fiware/v2-subscription-init and uses the broker-api to create the subscriptions.
Configuration is done via environment variables:
| Env-Var | Description | Default |
|---|---|---|
| FIWARE_SERVICE | Fiware service to be used for the subscription(and notification) | |
| FIWARE_SERVICE_PATH | Fiware servicepath to be used for the subscription(and notification) | /simulated |
| BROKER_URL | URL of the context-broker to create the configuration | http://localhost:1026 |
| QUANTUM_LEAP_URL | URL of the quantumleap-instance to receive the notifications | http://localhost:8668 |
| ENTITY_TYPE | Type of entities to subscribe to. | AirQualityObserved |
docker run --network host -e QUANTUM_LEAP_URL=http://quantumleap-quantumleap:8668 -e FIWARE_SERVICE=test init
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