{
"$schema": "https://json-schema.org/draft-07/schema",
"type": "object",
"properties": {
"sources": {
"type": "array",
"items": {
"type": "object",
"properties": {
"supportsRangeRequests": {
"const": true,
"description": "If provided, indicates that the dataUrl supports byte-range requests via the HTTP Range header."
},
"url": {
"type": "string",
"description": "The URL to load message data from. This URL should respond to a GET request with MCAP-formatted data for the described topics."
},
"id": {
"type": "string",
"description": "A unique identifier for this source which is used as an idempotency key when caching. If omitted, the `url` is used as an idempotency key."
},
"topics": {
"type": "array",
"items": {
"type": "object",
"required": ["name", "messageEncoding"],
"properties": {
"name": {
"type": "string"
},
"messageEncoding": {
"type": "string"
},
"schemaId": {
"type": "integer",
"description": "ID of the schema of messages on this topic, matching the `id` of an element of the `schemas` array. Omitting this property means the messages on this topic are schemaless.",
"minimum": 1,
"maximum": 65535
}
}
}
},
"schemas": {
"type": "array",
"items": {
"type": "object",
"description": "MCAP Schema record. See spec at https://mcap.dev/spec#schema-op0x03 for field meanings.",
"required": ["id", "name", "encoding", "data"],
"properties": {
"id": {
"type": "integer",
"minimum": 1,
"maximum": 65535
},
"name": {
"type": "string"
},
"encoding": {
"type": "string"
},
"data": {
"type": "string",
"description": "base64-encoded content of the `data` field",
"contentEncoding": "base64"
}
}
}
},
"startTime": {
"type": "string",
"format": "date-time",
"description": "Timestamp of the first expected message"
},
"endTime": {
"type": "string",
"format": "date-time",
"description": "Timestamp of the last expected message"
}
},
"oneOf": [
{ "required": ["url", "supportsRangeRequests"] },
{ "required": ["url", "topics", "schemas", "startTime", "endTime"] }
]
}
},
"name": {
"type": "string",
"description": "A human-readable name to associate with this recording."
}
},
"required": ["sources"],
"description": "A set of data sources to visualize."
}