{
  "type": "object",
  "description": "A single span in Zipkin JSON v2 format",
  "name": "ZipkinSpan",
  "properties": {
    "id": {
      "type": "string",
      "description": "Span ID (16 hex characters)"
    },
    "traceId": {
      "type": "string",
      "description": "Trace ID (32 hex characters)"
    },
    "parentId": {
      "type": "string",
      "description": "Parent span ID"
    },
    "name": {
      "type": "string",
      "description": "Span name / operation name"
    },
    "timestamp": {
      "type": "integer",
      "description": "Span start time in microseconds since epoch"
    },
    "duration": {
      "type": "integer",
      "description": "Span duration in microseconds"
    },
    "kind": {
      "type": "string",
      "enum": [
        "CLIENT",
        "SERVER",
        "PRODUCER",
        "CONSUMER"
      ]
    },
    "localEndpoint": {
      "type": "object",
      "properties": {
        "serviceName": {
          "type": "string"
        },
        "ipv4": {
          "type": "string"
        },
        "port": {
          "type": "integer"
        }
      }
    },
    "remoteEndpoint": {
      "type": "object",
      "properties": {
        "serviceName": {
          "type": "string"
        },
        "ipv4": {
          "type": "string"
        },
        "port": {
          "type": "integer"
        }
      }
    },
    "tags": {
      "type": "object"
    },
    "annotations": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "timestamp": {
            "type": "integer"
          },
          "value": {
            "type": "string"
          }
        }
      }
    }
  },
  "required": [
    "id",
    "traceId"
  ],
  "$schema": "https://json-structure.org/draft/2020-12/schema"
}