| | | 1 | | using EHonda.KicktippAi.Core; |
| | | 2 | | using NodaTime; |
| | | 3 | | using NodaTime.Text; |
| | | 4 | | |
| | | 5 | | namespace Orchestrator.Commands.Observability; |
| | | 6 | | |
| | 1 | 7 | | internal sealed record EvaluationTimestampPolicy( |
| | 1 | 8 | | string Kind, |
| | 1 | 9 | | string Reference, |
| | 1 | 10 | | Duration Offset) |
| | | 11 | | { |
| | | 12 | | public const string RelativeKind = "relative"; |
| | | 13 | | public const string StartsAtReference = "startsAt"; |
| | | 14 | | |
| | | 15 | | public static EvaluationTimestampPolicy CreateRelativeToMatchStart(Duration offset) |
| | | 16 | | { |
| | 1 | 17 | | return new EvaluationTimestampPolicy(RelativeKind, StartsAtReference, offset); |
| | | 18 | | } |
| | | 19 | | } |
| | | 20 | | |
| | | 21 | | internal static class EvaluationTimestampPolicyParser |
| | | 22 | | { |
| | | 23 | | private static readonly DurationPattern[] SupportedDurationPatterns = |
| | | 24 | | [ |
| | | 25 | | DurationPattern.JsonRoundtrip, |
| | | 26 | | DurationPattern.Roundtrip |
| | | 27 | | ]; |
| | | 28 | | |
| | | 29 | | public static EvaluationTimestampPolicy? ParseOrNull(string? kind, string? offset) |
| | | 30 | | { |
| | | 31 | | if (string.IsNullOrWhiteSpace(kind) && string.IsNullOrWhiteSpace(offset)) |
| | | 32 | | { |
| | | 33 | | return null; |
| | | 34 | | } |
| | | 35 | | |
| | | 36 | | return Parse(kind, offset); |
| | | 37 | | } |
| | | 38 | | |
| | | 39 | | public static EvaluationTimestampPolicy Parse(string? kind, string? offset) |
| | | 40 | | { |
| | | 41 | | kind = Normalize(kind, nameof(kind)); |
| | | 42 | | offset = Normalize(offset, nameof(offset)); |
| | | 43 | | |
| | | 44 | | if (!string.Equals(kind, EvaluationTimestampPolicy.RelativeKind, StringComparison.OrdinalIgnoreCase)) |
| | | 45 | | { |
| | | 46 | | throw new ArgumentException( |
| | | 47 | | $"Evaluation policy kind must currently be '{EvaluationTimestampPolicy.RelativeKind}'.", |
| | | 48 | | nameof(kind)); |
| | | 49 | | } |
| | | 50 | | |
| | | 51 | | foreach (var pattern in SupportedDurationPatterns) |
| | | 52 | | { |
| | | 53 | | var parseResult = pattern.Parse(offset); |
| | | 54 | | if (parseResult.Success) |
| | | 55 | | { |
| | | 56 | | return EvaluationTimestampPolicy.CreateRelativeToMatchStart(parseResult.Value); |
| | | 57 | | } |
| | | 58 | | } |
| | | 59 | | |
| | | 60 | | throw new ArgumentException( |
| | | 61 | | "Evaluation policy offset must use a supported NodaTime Duration format, for example '-12:00:00' or '-0:12:0 |
| | | 62 | | nameof(offset)); |
| | | 63 | | } |
| | | 64 | | |
| | | 65 | | private static string Normalize(string? value, string parameterName) |
| | | 66 | | { |
| | | 67 | | ArgumentException.ThrowIfNullOrWhiteSpace(value, parameterName); |
| | | 68 | | |
| | | 69 | | value = value.Trim(); |
| | | 70 | | if (value.Length >= 2 && value[0] == '"' && value[^1] == '"') |
| | | 71 | | { |
| | | 72 | | value = value[1..^1]; |
| | | 73 | | } |
| | | 74 | | |
| | | 75 | | return value; |
| | | 76 | | } |
| | | 77 | | } |
| | | 78 | | |
| | | 79 | | internal static class EvaluationTimestampResolver |
| | | 80 | | { |
| | | 81 | | public static DateTimeOffset Resolve(Match match, EvaluationTimestampPolicy policy) |
| | | 82 | | { |
| | | 83 | | ArgumentNullException.ThrowIfNull(match); |
| | | 84 | | ArgumentNullException.ThrowIfNull(policy); |
| | | 85 | | |
| | | 86 | | if (!string.Equals(policy.Kind, EvaluationTimestampPolicy.RelativeKind, StringComparison.Ordinal)) |
| | | 87 | | { |
| | | 88 | | throw new ArgumentException($"Unsupported evaluation policy kind '{policy.Kind}'.", nameof(policy)); |
| | | 89 | | } |
| | | 90 | | |
| | | 91 | | if (!string.Equals(policy.Reference, EvaluationTimestampPolicy.StartsAtReference, StringComparison.Ordinal)) |
| | | 92 | | { |
| | | 93 | | throw new ArgumentException($"Unsupported evaluation policy reference '{policy.Reference}'.", nameof(policy) |
| | | 94 | | } |
| | | 95 | | |
| | | 96 | | return (match.StartsAt + policy.Offset).ToDateTimeOffset(); |
| | | 97 | | } |
| | | 98 | | } |