Does opal-client support string when use external config server?

[hongbo-miao]

Regarding the doc How to configure external data sources,

when I use external_source_url in OPAL_DATA_CONFIG_SOURCES.

I built my config server, if I return a JSON format config like

{
    "entries": [
        {
            "url": "postgresql://[email protected]:40072/opa_db",
            "config": {
                "fetcher": "PostgresFetchProvider",
                "query": "select role, allow from roles;",
                "connection_params": {
                    "password": "passw0rd"
                }
            },
            "topics": [
                "policy_data"
            ],
            "dst_path": "roles"
        }
    ]
}

it works well.

Just wonder does opal-client also work if my config server returns a simple string like

"{\"entries\":[{\"url\":\"postgresql://[email protected]:40072/opa_db\",\"config\":{\"fetcher\":\"PostgresFetchProvider\",\"query\":\"select role, allow from roles;\",\"connection_params\":{\"password\":\"passw0rd\"},\"dict_key\":\"role\"},\"topics\":[\"policy_data\"],\"dst_path\":\"roles\"}]}"

?

[asafc]

OPAL client expects an HTTP response with Content-Type: application/json header.
Whitespaces should not matter.

[hongbo-miao]

Thanks! Forget the Content-Type: application/json, then it needs to return a JSON instead of string.