| | | 1 | | using Microsoft.Extensions.AI; |
| | | 2 | | using Microsoft.Extensions.AI.Evaluation; |
| | | 3 | | |
| | | 4 | | namespace NexusLabs.Needlr.AgentFramework.Langfuse; |
| | | 5 | | |
| | | 6 | | /// <summary> |
| | | 7 | | /// Convenience extensions for projecting <c>Microsoft.Extensions.AI.Evaluation</c> results onto a |
| | | 8 | | /// Langfuse scenario trace as scores. |
| | | 9 | | /// </summary> |
| | | 10 | | public static class LangfuseEvaluationScoreExtensions |
| | | 11 | | { |
| | | 12 | | /// <summary> |
| | | 13 | | /// Records every metric in <paramref name="result"/> as a Langfuse score on |
| | | 14 | | /// <paramref name="scenario"/>'s trace. Equivalent to |
| | | 15 | | /// <see cref="ILangfuseScenario.RecordEvaluationAsync"/>, provided as a fluent call site for |
| | | 16 | | /// eval code that already holds an <see cref="EvaluationResult"/>. |
| | | 17 | | /// </summary> |
| | | 18 | | /// <param name="result">The evaluation result to project.</param> |
| | | 19 | | /// <param name="scenario">The scenario whose trace the scores attach to.</param> |
| | | 20 | | /// <param name="cancellationToken">A cancellation token.</param> |
| | | 21 | | /// <returns>A task that completes when Langfuse has accepted all projected scores.</returns> |
| | | 22 | | /// <exception cref="ArgumentNullException"> |
| | | 23 | | /// <paramref name="result"/> or <paramref name="scenario"/> is <see langword="null"/>. |
| | | 24 | | /// </exception> |
| | | 25 | | public static Task RecordLangfuseScoresAsync( |
| | | 26 | | this EvaluationResult result, |
| | | 27 | | ILangfuseScenario scenario, |
| | | 28 | | CancellationToken cancellationToken = default) |
| | | 29 | | { |
| | 0 | 30 | | ArgumentNullException.ThrowIfNull(result); |
| | 0 | 31 | | ArgumentNullException.ThrowIfNull(scenario); |
| | | 32 | | |
| | 0 | 33 | | return scenario.RecordEvaluationAsync(result, cancellationToken); |
| | | 34 | | } |
| | | 35 | | |
| | | 36 | | /// <summary> |
| | | 37 | | /// Runs each evaluator over the supplied agent output and records every resulting metric as a |
| | | 38 | | /// Langfuse score on the scenario's trace. Collapses the per-test |
| | | 39 | | /// evaluate-then-record boilerplate into one call. |
| | | 40 | | /// </summary> |
| | | 41 | | /// <param name="scenario">The scenario whose trace the scores attach to.</param> |
| | | 42 | | /// <param name="evaluators">The evaluators to run.</param> |
| | | 43 | | /// <param name="messages">The conversation messages sent to the agent (for example, from <c>EvaluationInputs.Messag |
| | | 44 | | /// <param name="modelResponse">The agent's response (for example, from <c>EvaluationInputs.ModelResponse</c>).</par |
| | | 45 | | /// <param name="chatConfiguration">Optional chat configuration for LLM-judged evaluators.</param> |
| | | 46 | | /// <param name="additionalContext">Optional additional context (for example, <c>AgentRunDiagnosticsContext</c>).</p |
| | | 47 | | /// <param name="cancellationToken">A cancellation token.</param> |
| | | 48 | | /// <returns>The evaluation results, in evaluator order.</returns> |
| | | 49 | | /// <exception cref="ArgumentNullException"> |
| | | 50 | | /// <paramref name="scenario"/>, <paramref name="evaluators"/>, <paramref name="messages"/>, or |
| | | 51 | | /// <paramref name="modelResponse"/> is <see langword="null"/>. |
| | | 52 | | /// </exception> |
| | | 53 | | public static async Task<IReadOnlyList<EvaluationResult>> EvaluateAndRecordAsync( |
| | | 54 | | this ILangfuseScenario scenario, |
| | | 55 | | IEnumerable<IEvaluator> evaluators, |
| | | 56 | | IEnumerable<ChatMessage> messages, |
| | | 57 | | ChatResponse modelResponse, |
| | | 58 | | ChatConfiguration? chatConfiguration = null, |
| | | 59 | | IEnumerable<EvaluationContext>? additionalContext = null, |
| | | 60 | | CancellationToken cancellationToken = default) |
| | | 61 | | { |
| | 1 | 62 | | ArgumentNullException.ThrowIfNull(scenario); |
| | 1 | 63 | | ArgumentNullException.ThrowIfNull(evaluators); |
| | 1 | 64 | | ArgumentNullException.ThrowIfNull(messages); |
| | 1 | 65 | | ArgumentNullException.ThrowIfNull(modelResponse); |
| | | 66 | | |
| | 1 | 67 | | var materializedMessages = messages as IReadOnlyList<ChatMessage> ?? messages.ToList(); |
| | 1 | 68 | | var contextList = additionalContext?.ToList(); |
| | 1 | 69 | | var results = new List<EvaluationResult>(); |
| | | 70 | | |
| | 6 | 71 | | foreach (var evaluator in evaluators) |
| | | 72 | | { |
| | 2 | 73 | | var result = await evaluator |
| | 2 | 74 | | .EvaluateAsync(materializedMessages, modelResponse, chatConfiguration, contextList, cancellationToken) |
| | 2 | 75 | | .ConfigureAwait(false); |
| | 2 | 76 | | await scenario.RecordEvaluationAsync(result, cancellationToken).ConfigureAwait(false); |
| | 2 | 77 | | results.Add(result); |
| | 2 | 78 | | } |
| | | 79 | | |
| | 1 | 80 | | return results; |
| | 1 | 81 | | } |
| | | 82 | | } |