{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/mezmo/main/json-schema/mezmo-log-line-schema.json",
  "title": "Mezmo Log Line",
  "description": "A single log line as accepted by the Mezmo Log Ingestion API and emitted by the Log Export API.",
  "type": "object",
  "required": ["line"],
  "properties": {
    "timestamp": {
      "type": "integer",
      "description": "Unix epoch milliseconds. If absent, the server applies an arrival timestamp."
    },
    "line": {
      "type": "string",
      "description": "Log line body."
    },
    "app": {
      "type": "string",
      "description": "Originating application name."
    },
    "level": {
      "type": "string",
      "enum": ["DEBUG", "INFO", "WARN", "WARNING", "ERROR", "FATAL", "TRACE"],
      "description": "Severity level."
    },
    "env": {
      "type": "string",
      "description": "Environment (prod, staging, dev)."
    },
    "meta": {
      "type": "object",
      "description": "Free-form structured metadata.",
      "additionalProperties": true
    },
    "_host": {
      "type": "string",
      "description": "Originating host (export-side)."
    },
    "_id": {
      "type": "string",
      "description": "Server-assigned line id (export-side)."
    }
  },
  "additionalProperties": true
}