|
| 1 | +""" |
| 2 | +Activity registration decorator for automatic registration with the automation engine. |
| 3 | +""" |
| 4 | + |
| 5 | +import inspect |
| 6 | +import json |
| 7 | +from typing import Any, Callable, Dict, List, Union, get_args, get_origin |
| 8 | + |
| 9 | +import requests |
| 10 | + |
| 11 | +from application_sdk.observability.logger_adaptor import get_logger |
| 12 | +from pydantic import BaseModel |
| 13 | + |
| 14 | +logger = get_logger(__name__) |
| 15 | + |
| 16 | + |
| 17 | +# Global registry to collect decorated activities |
| 18 | +ACTIVITY_REGISTRY: List[dict[str, Any]] = [] |
| 19 | + |
| 20 | + |
| 21 | +def _type_to_json_schema(annotation: Any) -> Dict[str, Any]: |
| 22 | + """Convert Python type annotation to JSON Schema using reflection.""" |
| 23 | + if inspect.isclass(annotation) and issubclass(annotation, BaseModel): |
| 24 | + schema = annotation.model_json_schema(mode="serialization") |
| 25 | + if "$defs" in schema: |
| 26 | + defs = schema.pop("$defs") |
| 27 | + schema = {**schema, **defs} |
| 28 | + return schema |
| 29 | + |
| 30 | + origin = get_origin(annotation) |
| 31 | + if origin is Union: |
| 32 | + args = get_args(annotation) |
| 33 | + if type(None) in args: |
| 34 | + non_none_types = [arg for arg in args if arg is not type(None)] |
| 35 | + if non_none_types: |
| 36 | + schema = _type_to_json_schema(non_none_types[0]) |
| 37 | + schema["nullable"] = True |
| 38 | + return schema |
| 39 | + |
| 40 | + if origin is dict or annotation is dict: |
| 41 | + args = get_args(annotation) |
| 42 | + if args: |
| 43 | + return { |
| 44 | + "type": "object", |
| 45 | + "additionalProperties": _type_to_json_schema(args[1]), |
| 46 | + } |
| 47 | + return {"type": "object"} |
| 48 | + |
| 49 | + if origin is list or annotation is list: |
| 50 | + args = get_args(annotation) |
| 51 | + if args: |
| 52 | + return {"type": "array", "items": _type_to_json_schema(args[0])} |
| 53 | + return {"type": "array"} |
| 54 | + |
| 55 | + type_mapping = { |
| 56 | + str: {"type": "string"}, |
| 57 | + int: {"type": "integer"}, |
| 58 | + float: {"type": "number"}, |
| 59 | + bool: {"type": "boolean"}, |
| 60 | + Any: {}, |
| 61 | + } |
| 62 | + |
| 63 | + if annotation in type_mapping: |
| 64 | + return type_mapping[annotation] |
| 65 | + |
| 66 | + return {} |
| 67 | + |
| 68 | + |
| 69 | +def _generate_input_schema(func: Any) -> Dict[str, Any]: |
| 70 | + """Generate JSON Schema for function inputs using reflection.""" |
| 71 | + sig = inspect.signature(func) |
| 72 | + properties = {} |
| 73 | + required: list[str] = [] |
| 74 | + |
| 75 | + for param_name, param in sig.parameters.items(): |
| 76 | + if param_name == "self": |
| 77 | + continue |
| 78 | + |
| 79 | + param_schema = ( |
| 80 | + _type_to_json_schema(param.annotation) |
| 81 | + if param.annotation != inspect.Parameter.empty |
| 82 | + else {} |
| 83 | + ) |
| 84 | + |
| 85 | + if param.default != inspect.Parameter.empty: |
| 86 | + if isinstance(param.default, (str, int, float, bool, type(None))): |
| 87 | + param_schema["default"] = param.default |
| 88 | + else: |
| 89 | + required.append(param_name) |
| 90 | + |
| 91 | + properties[param_name] = param_schema |
| 92 | + |
| 93 | + schema = {"type": "object", "properties": properties} |
| 94 | + if required: |
| 95 | + schema["required"] = required |
| 96 | + |
| 97 | + return schema |
| 98 | + |
| 99 | + |
| 100 | +def _generate_output_schema(func: Any) -> Dict[str, Any]: |
| 101 | + """Generate JSON Schema for function outputs using reflection.""" |
| 102 | + return_annotation = inspect.signature(func).return_annotation |
| 103 | + if return_annotation == inspect.Signature.empty: |
| 104 | + return {} |
| 105 | + return _type_to_json_schema(return_annotation) |
| 106 | + |
| 107 | + |
| 108 | +def automation_activity( |
| 109 | + name: str, |
| 110 | + description: str, |
| 111 | +) -> Callable[[Callable[..., Any]], Callable[..., Any]]: |
| 112 | + """Decorator to mark an activity for automatic registration.""" |
| 113 | + |
| 114 | + def decorator(func: Callable[..., Any]) -> Callable[..., Any]: |
| 115 | + input_schema: dict[str, Any] = _generate_input_schema(func) |
| 116 | + output_schema: dict[str, Any] = _generate_output_schema(func) |
| 117 | + |
| 118 | + logger.info(f"Collected automation activity: {name}") |
| 119 | + ACTIVITY_REGISTRY.append( |
| 120 | + { |
| 121 | + "name": name, |
| 122 | + "description": description, |
| 123 | + "func": func, |
| 124 | + "input_schema": json.dumps(input_schema) if input_schema else None, |
| 125 | + "output_schema": json.dumps(output_schema) if output_schema else None, |
| 126 | + } |
| 127 | + ) |
| 128 | + return func |
| 129 | + |
| 130 | + return decorator |
| 131 | + |
| 132 | + |
| 133 | +def flush_registrations( |
| 134 | + api_base_url: str, |
| 135 | + app_qualified_name: str, |
| 136 | + app_name: str, |
| 137 | +) -> None: |
| 138 | + """Flush all collected registrations by calling the activities create API via HTTP.""" |
| 139 | + if not ACTIVITY_REGISTRY: |
| 140 | + logger.info("No activities to register") |
| 141 | + return |
| 142 | + |
| 143 | + logger.info(f"Registering {len(ACTIVITY_REGISTRY)} activities with automation engine") |
| 144 | + |
| 145 | + # Build tools payload without function objects (not JSON serializable) |
| 146 | + tools = [ |
| 147 | + { |
| 148 | + "name": item["name"], |
| 149 | + "description": item["description"], |
| 150 | + "input_schema": item["input_schema"], |
| 151 | + "output_schema": item["output_schema"], |
| 152 | + } |
| 153 | + for item in ACTIVITY_REGISTRY |
| 154 | + ] |
| 155 | + |
| 156 | + payload = { |
| 157 | + "app_qualified_name": app_qualified_name, |
| 158 | + "app_name": app_name, |
| 159 | + "tools": tools, |
| 160 | + } |
| 161 | + |
| 162 | + response: requests.Response = requests.post( |
| 163 | + f"{api_base_url}/api/tools", |
| 164 | + json=payload, |
| 165 | + timeout=30.0, |
| 166 | + ) |
| 167 | + response.raise_for_status() |
| 168 | + result = response.json() |
| 169 | + |
| 170 | + if result.get("status") == "success": |
| 171 | + logger.info( |
| 172 | + f"Successfully registered {len(tools)} activities with automation engine" |
| 173 | + ) |
| 174 | + else: |
| 175 | + logger.error( |
| 176 | + f"Failed to register activities with automation engine: {result.get('message')}" |
| 177 | + ) |
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