{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "title": "Rule",
  "type": "object",
  "properties": {
    "id": {
      "type": "string"
    },
    "tags": {
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "priority": {
      "type": "number",
      "default": 0
    },
    "destination": {
      "type": "string"
    },
    "match": {
      "type": "object",
      "properties": {
        "all": {
          "type": "array",
          "minItems": 1,
          "items": {
            "$ref": "#/definitions/match"
          }
        },
        "any": {
          "type": "array",
          "minItems": 1,
          "items": {
            "$ref": "#/definitions/match"
          }
        },
        "none": {
          "type": "array",
          "minItems": 1,
          "items": {
            "$ref": "#/definitions/match"
          }
        },
        "source": {
          "$ref": "#/definitions/source"
        },
        "headers": {
          "$ref": "#/definitions/headers"
        }
      },
      "additionalProperties": false,
      "minProperties": 1
    },
    "route": {
      "$ref": "#/definitions/route"
    },
    "actions": {
      "type": "array",
      "minItems": 1,
      "items": {
        "anyOf": [
          {
            "$ref": "#/definitions/delayAction"
          },
          {
            "$ref": "#/definitions/abortAction"
          },
          {
            "$ref": "#/definitions/traceAction"
          }
        ]
      }
    }
  },
  "additionalFields": false,
  "required": ["destination"],
  "oneOf": [
    {
      "title": "Route rule",
      "required": ["route"]
    },
    {
      "title": "Action rule",
      "required": ["actions"]
    }
  ],
  "definitions": {
    "tags": {
      "title": "Tags",
      "description": "An array of one or more unique service tags.",
      "type": "array",
      "items": {
        "type": "string"
      },
      "uniqueItems": true,
      "minItems": 1
    },
    "source": {
      "title": "Source",
      "description": "Microservice where request originated from",
      "type": "object",
      "properties": {
        "name": {
          "type": "string"
        },
        "tags": {
          "$ref": "#/definitions/tags"
        }
      },
      "required": [
        "name"
      ],
      "additionalProperties": false
    },
    "headers": {
      "title": "Headers",
      "description": "Header key/value pairs",
      "type": "object",
      "additionalProperties": {
        "title": "Header",
        "type": "string"
      },
      "minProperties": 1
    },
    "match": {
      "title": "Match",
      "description": "Conditions that must be true to apply the action or routing",
      "type": "object",
      "properties": {
        "source": {
          "$ref": "#/definitions/source"
        },
        "headers": {
          "$ref": "#/definitions/headers"
        }
      },
      "additionalProperties": false,
      "minProperties": 1
    },
    "basicBackend": {
      "title": "Basic Backend",
      "description": "Basic backend to route to",
      "type": "object",
      "properties": {
        "name": {
          "title": "Service name",
          "description": "The service name",
          "type": "string"
        },
        "tags": {
          "$ref": "#/definitions/tags"
        }
      },
      "required": [
        "tags"
      ],
      "additionalProperties": false
    },
    "backend": {
      "title": "Backend",
      "description": "Backend to route to",
      "type": "object",
      "properties": {
        "name": {
          "title": "Service name",
          "description": "The service name",
          "type": "string"
        },
        "tags": {
          "$ref": "#/definitions/tags"
        },
        "weight": {
          "title": "Traffic weight",
          "description": "Percentage of traffic to route to this backend.",
          "type": "number",
          "minimum": 0,
          "maximum": 1,
          "exclusiveMinimum": true,
          "default": 1
        },
        "timeout": {
          "description": "Request timeout or read/write timeout on the pipe in seconds",
          "type": "number",
          "minimum": 0,
          "exclusiveMinimum": true
        }
      },
      "required": [
        "tags"
      ],
      "additionalProperties": false
    },
    "route": {
      "type": "object",
      "properties": {
        "backends": {
          "type": "array",
          "minItems": 1,
          "items": {
            "$ref": "#/definitions/backend"
          }
        }
      },
      "required": ["backends"],
      "additionalProperties": false
    },
    "probability": {
      "title": "Probability",
      "description": "Probability of executing action",
      "type": "number",
      "minimum": 0,
      "maximum": 1,
      "exclusiveMinimum": true,
      "default": 1
    },
    "action": {
      "title": "Action",
      "description": "Action to apply to matching requests",
      "type": "object",
      "properties": {
        "action": {
          "type": "string"
        }
      },
      "required": ["action"]
    },
    "delayAction": {
      "title": "Delay",
      "description": "Conditionally delay the request",
      "properties": {
        "action": {
          "enum": ["delay"]
        },
        "probability": {
          "$ref": "#/definitions/probability"
        },
        "tags": {
          "$ref": "#/definitions/tags"
        },
        "duration": {
          "type": "number",
          "description": "Duration of delay in seconds",
          "minimum": 0,
          "exclusiveMinimum": true
        }
      },
      "required": [
        "duration"
      ],
      "additionalProperties": false,
      "allOf": [
        {
          "$ref": "#/definitions/action"
        }
      ]
    },
    "abortAction": {
      "title": "Abort",
      "description": "Conditionally abort the request",
      "properties": {
        "action": {
          "enum": ["abort"]
        },
        "probability": {
          "$ref": "#/definitions/probability"
        },
        "tags": {
          "$ref": "#/definitions/tags"
        },
        "return_code": {
          "type": "number",
          "description": "Return code",
          "minimum": -5,
          "maximum": 599
        }
      },
      "required": ["return_code"],
      "additionalProperties": false,
      "allOf": [
        {
          "$ref": "#/definitions/action"
        }
      ]
    },
    "traceAction": {
      "title": "Trace",
      "description": "Trace request",
      "properties": {
        "action": {
          "enum": ["trace"]
        },
        "tags": {
          "$ref": "#/definitions/tags"
        },
        "log_key": {
          "type": "string",
          "default": "trace"
        },
        "log_value": {
          "type": "string"
        }
      },
      "additionalProperties": false,
      "allOf": [
        {
          "$ref": "#/definitions/action"
        }
      ]
    }
  }
}