|
| 1 | +import json |
| 2 | +from pathlib import Path |
| 3 | +from typing import Any, Iterable, Sequence |
| 4 | + |
| 5 | +import pytest |
| 6 | +from opentelemetry.sdk.resources import Resource |
| 7 | +from opentelemetry.sdk.trace import ReadableSpan, TracerProvider |
| 8 | +from opentelemetry.sdk.trace.export import SpanExporter, SpanExportResult |
| 9 | + |
| 10 | +from langfuse._client.client import Langfuse |
| 11 | +from langfuse._client.resource_manager import LangfuseResourceManager |
| 12 | + |
| 13 | + |
| 14 | +class InMemorySpanExporter(SpanExporter): |
| 15 | + """Simple in-memory exporter to collect spans for deterministic tests.""" |
| 16 | + |
| 17 | + def __init__(self) -> None: |
| 18 | + self._finished_spans: list[ReadableSpan] = [] |
| 19 | + self._stopped = False |
| 20 | + |
| 21 | + def export(self, spans: Sequence[ReadableSpan]) -> SpanExportResult: |
| 22 | + if self._stopped: |
| 23 | + return SpanExportResult.FAILURE |
| 24 | + |
| 25 | + self._finished_spans.extend(spans) |
| 26 | + return SpanExportResult.SUCCESS |
| 27 | + |
| 28 | + def shutdown(self) -> None: |
| 29 | + self._stopped = True |
| 30 | + |
| 31 | + def get_finished_spans(self) -> list[ReadableSpan]: |
| 32 | + return list(self._finished_spans) |
| 33 | + |
| 34 | + def clear(self) -> None: |
| 35 | + self._finished_spans.clear() |
| 36 | + |
| 37 | + |
| 38 | +def pytest_collection_modifyitems(items: list[pytest.Item]) -> None: |
| 39 | + for item in items: |
| 40 | + test_group = Path(str(item.fspath)).parent.name |
| 41 | + |
| 42 | + if test_group == "unit": |
| 43 | + item.add_marker(pytest.mark.unit) |
| 44 | + continue |
| 45 | + |
| 46 | + if test_group == "e2e": |
| 47 | + item.add_marker(pytest.mark.e2e) |
| 48 | + continue |
| 49 | + |
| 50 | + if test_group == "live_provider": |
| 51 | + item.add_marker(pytest.mark.e2e) |
| 52 | + item.add_marker(pytest.mark.live_provider) |
| 53 | + |
| 54 | + |
| 55 | +@pytest.fixture(autouse=True) |
| 56 | +def reset_langfuse_state() -> Iterable[None]: |
| 57 | + LangfuseResourceManager.reset() |
| 58 | + yield |
| 59 | + LangfuseResourceManager.reset() |
| 60 | + |
| 61 | + |
| 62 | +@pytest.fixture |
| 63 | +def memory_exporter() -> Iterable[InMemorySpanExporter]: |
| 64 | + exporter = InMemorySpanExporter() |
| 65 | + yield exporter |
| 66 | + exporter.shutdown() |
| 67 | + |
| 68 | + |
| 69 | +@pytest.fixture |
| 70 | +def langfuse_memory_client( |
| 71 | + monkeypatch: pytest.MonkeyPatch, memory_exporter: InMemorySpanExporter |
| 72 | +) -> Iterable[Langfuse]: |
| 73 | + monkeypatch.setenv("LANGFUSE_PUBLIC_KEY", "test-public-key") |
| 74 | + monkeypatch.setenv("LANGFUSE_SECRET_KEY", "test-secret-key") |
| 75 | + monkeypatch.setenv("LANGFUSE_BASE_URL", "http://test-host") |
| 76 | + |
| 77 | + tracer_provider = TracerProvider(resource=Resource.create({"service.name": "test"})) |
| 78 | + |
| 79 | + def mock_init(self: Any, **kwargs: Any) -> None: |
| 80 | + from opentelemetry.sdk.trace.export import BatchSpanProcessor |
| 81 | + |
| 82 | + from langfuse._client.span_filter import is_default_export_span |
| 83 | + |
| 84 | + self.public_key = kwargs.get("public_key", "test-public-key") |
| 85 | + blocked_scopes = kwargs.get("blocked_instrumentation_scopes") |
| 86 | + self.blocked_instrumentation_scopes = ( |
| 87 | + blocked_scopes if blocked_scopes is not None else [] |
| 88 | + ) |
| 89 | + self._should_export_span = ( |
| 90 | + kwargs.get("should_export_span") or is_default_export_span |
| 91 | + ) |
| 92 | + BatchSpanProcessor.__init__( |
| 93 | + self, |
| 94 | + span_exporter=memory_exporter, |
| 95 | + max_export_batch_size=512, |
| 96 | + schedule_delay_millis=1, |
| 97 | + ) |
| 98 | + |
| 99 | + monkeypatch.setattr( |
| 100 | + "langfuse._client.span_processor.LangfuseSpanProcessor.__init__", |
| 101 | + mock_init, |
| 102 | + ) |
| 103 | + |
| 104 | + client = Langfuse( |
| 105 | + public_key="test-public-key", |
| 106 | + secret_key="test-secret-key", |
| 107 | + base_url="http://test-host", |
| 108 | + tracing_enabled=True, |
| 109 | + tracer_provider=tracer_provider, |
| 110 | + ) |
| 111 | + |
| 112 | + yield client |
| 113 | + client.flush() |
| 114 | + |
| 115 | + |
| 116 | +@pytest.fixture |
| 117 | +def get_span(memory_exporter: InMemorySpanExporter): |
| 118 | + def _get_span(name: str) -> ReadableSpan: |
| 119 | + for span in memory_exporter.get_finished_spans(): |
| 120 | + if span.name == name: |
| 121 | + return span |
| 122 | + |
| 123 | + raise AssertionError( |
| 124 | + f"Span {name!r} not found in {[span.name for span in memory_exporter.get_finished_spans()]}" |
| 125 | + ) |
| 126 | + |
| 127 | + return _get_span |
| 128 | + |
| 129 | + |
| 130 | +@pytest.fixture |
| 131 | +def find_spans(memory_exporter: InMemorySpanExporter): |
| 132 | + def _find_spans(name: str) -> list[ReadableSpan]: |
| 133 | + return [ |
| 134 | + span for span in memory_exporter.get_finished_spans() if span.name == name |
| 135 | + ] |
| 136 | + |
| 137 | + return _find_spans |
| 138 | + |
| 139 | + |
| 140 | +@pytest.fixture |
| 141 | +def json_attr(): |
| 142 | + def _json_attr(span: ReadableSpan, attribute: str) -> Any: |
| 143 | + value = span.attributes[attribute] |
| 144 | + if not isinstance(value, str): |
| 145 | + return value |
| 146 | + |
| 147 | + return json.loads(value) |
| 148 | + |
| 149 | + return _json_attr |
0 commit comments