{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/conductor/refs/heads/main/json-schema/event-handler.json",
  "title": "EventHandler",
  "description": "A Conductor event handler definition that specifies how to respond to events by triggering workflows, completing tasks, or failing tasks based on configurable conditions.",
  "type": "object",
  "required": [
    "name",
    "event",
    "actions"
  ],
  "properties": {
    "name": {
      "type": "string",
      "description": "Name of the event handler"
    },
    "event": {
      "type": "string",
      "description": "Event identifier in the format source:sink:subject (e.g., conductor:workflow_completed:myWorkflow)"
    },
    "condition": {
      "type": "string",
      "description": "Condition expression to evaluate"
    },
    "actions": {
      "type": "array",
      "description": "List of actions to perform when the event is received",
      "items": {
        "$ref": "#/$defs/EventHandlerAction"
      }
    },
    "active": {
      "type": "boolean",
      "description": "Whether the event handler is active",
      "default": true
    },
    "evaluatorType": {
      "type": "string",
      "description": "Type of evaluator for the condition"
    }
  },
  "$defs": {
    "EventHandlerAction": {
      "type": "object",
      "properties": {
        "action": {
          "type": "string",
          "description": "The action type",
          "enum": [
            "start_workflow",
            "complete_task",
            "fail_task"
          ]
        },
        "start_workflow": {
          "type": "object",
          "description": "Start workflow action parameters",
          "properties": {
            "name": {
              "type": "string",
              "description": "Name of the workflow to start"
            },
            "version": {
              "type": "integer",
              "description": "Version of the workflow to start"
            },
            "correlationId": {
              "type": "string",
              "description": "Correlation ID for the started workflow"
            },
            "input": {
              "type": "object",
              "description": "Input parameters for the workflow",
              "additionalProperties": true
            }
          }
        },
        "complete_task": {
          "type": "object",
          "description": "Complete task action parameters",
          "properties": {
            "workflowId": {
              "type": "string",
              "description": "Workflow instance ID"
            },
            "taskRefName": {
              "type": "string",
              "description": "Task reference name"
            },
            "output": {
              "type": "object",
              "description": "Output data for the completed task",
              "additionalProperties": true
            }
          }
        },
        "fail_task": {
          "type": "object",
          "description": "Fail task action parameters",
          "properties": {
            "workflowId": {
              "type": "string",
              "description": "Workflow instance ID"
            },
            "taskRefName": {
              "type": "string",
              "description": "Task reference name"
            },
            "output": {
              "type": "object",
              "description": "Output data for the failed task",
              "additionalProperties": true
            }
          }
        },
        "expandInlineJSON": {
          "type": "boolean",
          "description": "Whether to expand inline JSON strings",
          "default": false
        }
      }
    }
  }
}