| |
| |
| |
| import contextlib |
| import dataclasses |
| import uuid |
| from typing import Dict, Any, Optional, List, Iterator |
|
|
| from haystack.tracing import Span, Tracer |
|
|
|
|
| @dataclasses.dataclass |
| class SpyingSpan(Span): |
| operation_name: str |
| parent_span: Optional[Span] = None |
| tags: Dict[str, Any] = dataclasses.field(default_factory=dict) |
|
|
| trace_id: Optional[str] = dataclasses.field(default_factory=lambda: str(uuid.uuid4())) |
| span_id: Optional[str] = dataclasses.field(default_factory=lambda: str(uuid.uuid4())) |
|
|
| def set_tag(self, key: str, value: Any) -> None: |
| self.tags[key] = value |
|
|
| def get_correlation_data_for_logs(self) -> Dict[str, Any]: |
| return {"trace_id": self.trace_id, "span_id": self.span_id} |
|
|
|
|
| class SpyingTracer(Tracer): |
| def current_span(self) -> Optional[Span]: |
| return self.spans[-1] if self.spans else None |
|
|
| def __init__(self) -> None: |
| self.spans: List[SpyingSpan] = [] |
|
|
| @contextlib.contextmanager |
| def trace( |
| self, operation_name: str, tags: Optional[Dict[str, Any]] = None, parent_span: Optional[Span] = None |
| ) -> Iterator[Span]: |
| new_span = SpyingSpan(operation_name, parent_span) |
|
|
| for key, value in (tags or {}).items(): |
| new_span.set_tag(key, value) |
|
|
| self.spans.append(new_span) |
|
|
| yield new_span |
|
|
