{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "urn:mtusi:messenger:attachment-job:v1",
  "title": "Durable attachment processing job v1",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "schema_version",
    "job_id",
    "type",
    "attachment_id",
    "pipeline_version",
    "attempt",
    "created_at"
  ],
  "properties": {
    "schema_version": {
      "const": 1
    },
    "job_id": {
      "type": "string",
      "format": "uuid"
    },
    "type": {
      "const": "attachment.process.v1"
    },
    "attachment_id": {
      "type": "string",
      "format": "uuid"
    },
    "pipeline_version": {
      "type": "integer",
      "minimum": 1
    },
    "attempt": {
      "type": "integer",
      "minimum": 1
    },
    "created_at": {
      "type": "string",
      "format": "date-time"
    },
    "traceparent": {
      "type": "string",
      "pattern": "^00-[0-9a-f]{32}-[0-9a-f]{16}-[0-9a-f]{2}$"
    },
    "tracestate": {
      "type": "string",
      "maxLength": 512
    }
  },
  "examples": [
    {
      "schema_version": 1,
      "job_id": "11111111-1111-4111-8111-111111111111",
      "type": "attachment.process.v1",
      "attachment_id": "22222222-2222-4222-8222-222222222222",
      "pipeline_version": 1,
      "attempt": 1,
      "created_at": "2026-09-01T12:00:00Z"
    }
  ]
}