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Version: 15.2.0

Proxy Google FHIR Configuration

This service proxies FHIR HTTP calls to Cloud Healthcare API.

Environment variables​

The service needs the following environment variables:

  • GOOGLE_APPLICATION_CREDENTIALS (required): JSON returned by Google Cloud Console with the credentials to authenticate as a service account. It should be created as Console level environment variable;
  • FHIR_STORE_URL (required): URL of the fhir store created through Google Cloud Console. It should be created as Console level environment variable;
  • FHIR_PLATFORM_URL (required): base URL to use in the response payload instead of that of Google. It should be created as public variable;
  • ACTIVE_RESOURCES (required): Names of FHIR resources to be used, comma separated names;

Credentials​

The credential must follow this schema:

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string"
    },
    "project_id": {
      "type": "string"
    },
    "private_key_id": {
      "type": "string"
    },
    "private_key": {
      "type": "string"
    },
    "client_email": {
      "type": "string"
    },
    "client_id": {
      "type": "string"
    },
    "auth_uri": {
      "type": "string"
    },
    "token_uri": {
      "type": "string"
    },
    "auth_provider_x509_cert_url": {
      "type": "string"
    },
    "client_x509_cert_url": {
      "type": "string"
    }
  }
}

In order to use the $purge operator, it's required to add the role Healthcare FHIR Store Administrator to the service account through the Google Cloud Console (IAM & Admin).

FHIR store URL​

This URL should match the following format

https://healthcare.googleapis.com/v1/projects/:progect_name/locations/:geographical_location/datasets/:dataset_name/fhirStores/:fhir_store_name

FHIR platform URL​

This URL should be the base path you use when calling the proxy service, for example:

https://[project_console_name].[environment].mia-platform.eu

FHIR resources​

An example of value for ACTIVE_RESOURCES can be Patient,Practitioner,Procedure. If one or more of the resources names are incorrect, then the server will fail to start.

FHIR category in API Portal​

In order to explore the endpoints belonging to the activated FHIR resources in a simpler way, it's possible to group them in a category that can be selected. To define the category you can go in the Advanced section of the Console and under swagger-aggregator --> swagger-aggregator.json copy the following configuration:

{
  "subswaggers": {
    "/fhir-category.json": {
      "name": "FHIR endpoints",
      "tagName": "FHIR endpoints",
      "expression": "Boolean(tags) && 'FHIR' in tags"
    }
  }
}