schema.json

{
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "proxies": {
      "type": "object",
      "additionalProperties": false,
      "patternProperties": {
        "^\/([a-z0-9/-]+\/)?$": {
          "type": "object",
          "additionalProperties": false,
          "required": ["upstreams", "rewrite", "namespace"],
          "dependencies": {
              "sunsets": ["recommended"]
          },
          "properties": {
            "sunsets": {
              "minProperties": 1,
              "patternProperties": {
                "^v?\\d+$": {
                  "type": "string",
                  "format": "date-time"
                }
              }
            },
            "recommended": {
              "type": "string",
              "pattern": "^v?\\d+$"
            },
            "default": {
              "type": "string",
              "pattern": "^v?\\d+$"
            },
            "upstreams": {
              "minProperties": 1,
              "additionalProperties": false,
              "patternProperties": {
                "^v?\\d+$": {
                  "type": "array",
                  "minItems": 1,
                  "items": {
                    "type": "string"
                  }
                }
              }
            },
            "namespace": {
              "type": "string",
              "default": "\\S+"
            },
            "rewrite": {
              "type": "string",
              "default": "/$1"
            }
          }
        }
      }
    }
  }
}