{
    "$schema": "http://json-schema.org/draft-04/schema",
    "id": "https://choria.io/schemas/sr/v1/age_advisory.json",
    "description": "Choria Stream Replicator sender age advisory",
    "title": "AgeAdvisoryV1",
    "type":"object",
    "required": [
        "$schema",
        "inspect",
        "value",
        "age",
        "seen",
        "replicator",
        "timestamp"
    ],
    "properties": {
        "inspect": {
            "type":"string",
            "description": "The key being inspected in the data that caused the advisory",
            "minLength": 1
        },
        "value": {
            "type":"string",
            "description": "The value found in the sent data that indentifies the unique sender",
            "minLength": 1
        },
        "age": {
            "type":"integer",
            "description": "The time since this sender last checked in, seconds"
        },
        "seen": {
            "type":"integer",
            "description": "Unix time in UTC this sender was last seen"
        },
        "replicator": {
            "type":"string",
            "description": "A unique indicator of the stream replicator where this advisory originated from"
        },
        "timestamp": {
            "type":"integer",
            "description": "The time this advisory was generated.  Unix timestamp in UTC"
        },
        "event": {
            "type":"string",
            "description": "The kind of event that cause the advisory.  timeout - node has not been seen for the configured period.  recover - node came back before expiring.  expire - node was never seen again, expired after max age for the topic",
            "enum": ["timeout", "recover", "expire"]
        }
    }
}