|
| 1 | +from functools import wraps |
| 2 | + |
| 3 | +import sentry_sdk |
| 4 | +from sentry_sdk.tracing_utils import set_span_errored |
| 5 | +from sentry_sdk.utils import event_from_exception |
| 6 | + |
| 7 | +from ..spans import invoke_agent_span, update_invoke_agent_span |
| 8 | + |
| 9 | +from typing import TYPE_CHECKING |
| 10 | +from pydantic_ai.agent import Agent # type: ignore |
| 11 | + |
| 12 | +if TYPE_CHECKING: |
| 13 | + from typing import Any, Callable, Optional |
| 14 | + |
| 15 | + |
| 16 | +def _capture_exception(exc): |
| 17 | + # type: (Any) -> None |
| 18 | + set_span_errored() |
| 19 | + |
| 20 | + event, hint = event_from_exception( |
| 21 | + exc, |
| 22 | + client_options=sentry_sdk.get_client().options, |
| 23 | + mechanism={"type": "pydantic_ai", "handled": False}, |
| 24 | + ) |
| 25 | + sentry_sdk.capture_event(event, hint=hint) |
| 26 | + |
| 27 | + |
| 28 | +class _StreamingContextManagerWrapper: |
| 29 | + """Wrapper for streaming methods that return async context managers.""" |
| 30 | + |
| 31 | + def __init__( |
| 32 | + self, |
| 33 | + agent, |
| 34 | + original_ctx_manager, |
| 35 | + user_prompt, |
| 36 | + model, |
| 37 | + model_settings, |
| 38 | + is_streaming=True, |
| 39 | + ): |
| 40 | + # type: (Any, Any, Any, Any, Any, bool) -> None |
| 41 | + self.agent = agent |
| 42 | + self.original_ctx_manager = original_ctx_manager |
| 43 | + self.user_prompt = user_prompt |
| 44 | + self.model = model |
| 45 | + self.model_settings = model_settings |
| 46 | + self.is_streaming = is_streaming |
| 47 | + self._isolation_scope = None # type: Any |
| 48 | + self._span = None # type: Optional[sentry_sdk.tracing.Span] |
| 49 | + self._result = None # type: Any |
| 50 | + |
| 51 | + async def __aenter__(self): |
| 52 | + # type: () -> Any |
| 53 | + # Set up isolation scope and invoke_agent span |
| 54 | + self._isolation_scope = sentry_sdk.isolation_scope() |
| 55 | + self._isolation_scope.__enter__() |
| 56 | + |
| 57 | + # Store agent reference and streaming flag |
| 58 | + sentry_sdk.get_current_scope().set_context( |
| 59 | + "pydantic_ai_agent", {"_agent": self.agent, "_streaming": self.is_streaming} |
| 60 | + ) |
| 61 | + |
| 62 | + # Create invoke_agent span (will be closed in __aexit__) |
| 63 | + self._span = invoke_agent_span( |
| 64 | + self.user_prompt, self.agent, self.model, self.model_settings |
| 65 | + ) |
| 66 | + self._span.__enter__() |
| 67 | + |
| 68 | + # Enter the original context manager |
| 69 | + result = await self.original_ctx_manager.__aenter__() |
| 70 | + self._result = result |
| 71 | + return result |
| 72 | + |
| 73 | + async def __aexit__(self, exc_type, exc_val, exc_tb): |
| 74 | + # type: (Any, Any, Any) -> None |
| 75 | + try: |
| 76 | + # Exit the original context manager first |
| 77 | + await self.original_ctx_manager.__aexit__(exc_type, exc_val, exc_tb) |
| 78 | + |
| 79 | + # Update span with output if successful |
| 80 | + if exc_type is None and self._result and hasattr(self._result, "output"): |
| 81 | + output = ( |
| 82 | + self._result.output if hasattr(self._result, "output") else None |
| 83 | + ) |
| 84 | + if self._span is not None: |
| 85 | + update_invoke_agent_span(self._span, output) |
| 86 | + finally: |
| 87 | + sentry_sdk.get_current_scope().remove_context("pydantic_ai_agent") |
| 88 | + # Clean up invoke span |
| 89 | + if self._span: |
| 90 | + self._span.__exit__(exc_type, exc_val, exc_tb) |
| 91 | + |
| 92 | + # Clean up isolation scope |
| 93 | + if self._isolation_scope: |
| 94 | + self._isolation_scope.__exit__(exc_type, exc_val, exc_tb) |
| 95 | + |
| 96 | + |
| 97 | +def _create_run_wrapper(original_func, is_streaming=False): |
| 98 | + # type: (Callable[..., Any], bool) -> Callable[..., Any] |
| 99 | + """ |
| 100 | + Wraps the Agent.run method to create an invoke_agent span. |
| 101 | +
|
| 102 | + Args: |
| 103 | + original_func: The original run method |
| 104 | + is_streaming: Whether this is a streaming method (for future use) |
| 105 | + """ |
| 106 | + |
| 107 | + @wraps(original_func) |
| 108 | + async def wrapper(self, *args, **kwargs): |
| 109 | + # type: (Any, *Any, **Any) -> Any |
| 110 | + # Isolate each workflow so that when agents are run in asyncio tasks they |
| 111 | + # don't touch each other's scopes |
| 112 | + with sentry_sdk.isolation_scope(): |
| 113 | + # Store agent reference and streaming flag in Sentry scope for access in nested spans |
| 114 | + # We store the full agent to allow access to tools and system prompts |
| 115 | + sentry_sdk.get_current_scope().set_context( |
| 116 | + "pydantic_ai_agent", {"_agent": self, "_streaming": is_streaming} |
| 117 | + ) |
| 118 | + |
| 119 | + # Extract parameters for the span |
| 120 | + user_prompt = kwargs.get("user_prompt") or (args[0] if args else None) |
| 121 | + model = kwargs.get("model") |
| 122 | + model_settings = kwargs.get("model_settings") |
| 123 | + |
| 124 | + # Create invoke_agent span |
| 125 | + with invoke_agent_span(user_prompt, self, model, model_settings) as span: |
| 126 | + try: |
| 127 | + result = await original_func(self, *args, **kwargs) |
| 128 | + |
| 129 | + # Update span with output |
| 130 | + output = result.output if hasattr(result, "output") else None |
| 131 | + update_invoke_agent_span(span, output) |
| 132 | + |
| 133 | + return result |
| 134 | + except Exception as exc: |
| 135 | + _capture_exception(exc) |
| 136 | + raise exc from None |
| 137 | + finally: |
| 138 | + sentry_sdk.get_current_scope().remove_context("pydantic_ai_agent") |
| 139 | + |
| 140 | + return wrapper |
| 141 | + |
| 142 | + |
| 143 | +def _create_streaming_wrapper(original_func): |
| 144 | + # type: (Callable[..., Any]) -> Callable[..., Any] |
| 145 | + """ |
| 146 | + Wraps run_stream method that returns an async context manager. |
| 147 | + """ |
| 148 | + |
| 149 | + @wraps(original_func) |
| 150 | + def wrapper(self, *args, **kwargs): |
| 151 | + # type: (Any, *Any, **Any) -> Any |
| 152 | + # Extract parameters for the span |
| 153 | + user_prompt = kwargs.get("user_prompt") or (args[0] if args else None) |
| 154 | + model = kwargs.get("model") |
| 155 | + model_settings = kwargs.get("model_settings") |
| 156 | + |
| 157 | + # Call original function to get the context manager |
| 158 | + original_ctx_manager = original_func(self, *args, **kwargs) |
| 159 | + |
| 160 | + # Wrap it with our instrumentation |
| 161 | + return _StreamingContextManagerWrapper( |
| 162 | + agent=self, |
| 163 | + original_ctx_manager=original_ctx_manager, |
| 164 | + user_prompt=user_prompt, |
| 165 | + model=model, |
| 166 | + model_settings=model_settings, |
| 167 | + is_streaming=True, |
| 168 | + ) |
| 169 | + |
| 170 | + return wrapper |
| 171 | + |
| 172 | + |
| 173 | +def _create_streaming_events_wrapper(original_func): |
| 174 | + # type: (Callable[..., Any]) -> Callable[..., Any] |
| 175 | + """ |
| 176 | + Wraps run_stream_events method - no span needed as it delegates to run(). |
| 177 | +
|
| 178 | + Note: run_stream_events internally calls self.run() with an event_stream_handler, |
| 179 | + so the invoke_agent span will be created by the run() wrapper. |
| 180 | + """ |
| 181 | + |
| 182 | + @wraps(original_func) |
| 183 | + async def wrapper(self, *args, **kwargs): |
| 184 | + # type: (Any, *Any, **Any) -> Any |
| 185 | + # Just call the original generator - it will call run() which has the instrumentation |
| 186 | + try: |
| 187 | + async for event in original_func(self, *args, **kwargs): |
| 188 | + yield event |
| 189 | + except Exception as exc: |
| 190 | + _capture_exception(exc) |
| 191 | + raise exc from None |
| 192 | + |
| 193 | + return wrapper |
| 194 | + |
| 195 | + |
| 196 | +def _patch_agent_run(): |
| 197 | + # type: () -> None |
| 198 | + """ |
| 199 | + Patches the Agent run methods to create spans for agent execution. |
| 200 | +
|
| 201 | + This patches both non-streaming (run, run_sync) and streaming |
| 202 | + (run_stream, run_stream_events) methods. |
| 203 | + """ |
| 204 | + |
| 205 | + # Store original methods |
| 206 | + original_run = Agent.run |
| 207 | + original_run_stream = Agent.run_stream |
| 208 | + original_run_stream_events = Agent.run_stream_events |
| 209 | + |
| 210 | + # Wrap and apply patches for non-streaming methods |
| 211 | + Agent.run = _create_run_wrapper(original_run, is_streaming=False) |
| 212 | + |
| 213 | + # Wrap and apply patches for streaming methods |
| 214 | + Agent.run_stream = _create_streaming_wrapper(original_run_stream) |
| 215 | + Agent.run_stream_events = _create_streaming_events_wrapper( |
| 216 | + original_run_stream_events |
| 217 | + ) |
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