Frontend gaps fill work. Testing fixes work. Auditing in progress.

This commit is contained in:
StellaOps Bot
2025-12-30 01:22:58 +02:00
parent 1dc4bcbf10
commit 7a5210e2aa
928 changed files with 183942 additions and 3941 deletions

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@@ -0,0 +1,442 @@
extern alias webservice;
using System.Net;
using System.Net.Http.Json;
using System.Text.Json;
using System.Text.Json.Nodes;
using Microsoft.AspNetCore.Mvc.Testing;
using Microsoft.Extensions.DependencyInjection;
using StellaOps.Notifier.WebService.Contracts;
using StellaOps.Notifier.Worker.Storage;
using StellaOps.Notify.Models;
using WebProgram = webservice::Program;
using Xunit;
namespace StellaOps.Notifier.Tests.Endpoints;
/// <summary>
/// Tests for delivery retry and stats endpoints (NOTIFY-016).
/// </summary>
public sealed class DeliveryRetryEndpointTests : IClassFixture<WebApplicationFactory<WebProgram>>
{
private readonly HttpClient _client;
private readonly InMemoryDeliveryRepository _deliveryRepository;
private readonly InMemoryAuditRepository _auditRepository;
private readonly WebApplicationFactory<WebProgram> _factory;
public DeliveryRetryEndpointTests(WebApplicationFactory<WebProgram> factory)
{
_deliveryRepository = new InMemoryDeliveryRepository();
_auditRepository = new InMemoryAuditRepository();
var customFactory = factory.WithWebHostBuilder(builder =>
{
builder.ConfigureServices(services =>
{
services.AddSingleton<INotifyDeliveryRepository>(_deliveryRepository);
services.AddSingleton<INotifyAuditRepository>(_auditRepository);
});
builder.UseSetting("Environment", "Testing");
});
_factory = customFactory;
_client = customFactory.CreateClient();
_client.DefaultRequestHeaders.Add("X-StellaOps-Tenant", "test-tenant");
}
#region Delivery Retry Tests
[Fact]
public async Task RetryDelivery_ReturnsBadRequest_WhenTenantMissing()
{
// Arrange
var clientWithoutTenant = _factory.CreateClient();
// Act
var response = await clientWithoutTenant.PostAsJsonAsync(
"/api/v2/notify/deliveries/delivery-001/retry",
new { },
cancellationToken: CancellationToken.None);
// Assert
Assert.Equal(HttpStatusCode.BadRequest, response.StatusCode);
}
[Fact]
public async Task RetryDelivery_ReturnsNotFound_WhenDeliveryNotExists()
{
// Act
var response = await _client.PostAsJsonAsync(
"/api/v2/notify/deliveries/nonexistent-delivery/retry",
new { },
cancellationToken: CancellationToken.None);
// Assert
Assert.Equal(HttpStatusCode.NotFound, response.StatusCode);
}
[Fact]
public async Task RetryDelivery_ReturnsBadRequest_WhenDeliveryAlreadySent()
{
// Arrange
var delivery = CreateDelivery("delivery-sent", NotifyDeliveryStatus.Sent);
await _deliveryRepository.UpsertAsync(delivery, CancellationToken.None);
// Act
var response = await _client.PostAsJsonAsync(
"/api/v2/notify/deliveries/delivery-sent/retry",
new { },
cancellationToken: CancellationToken.None);
// Assert
Assert.Equal(HttpStatusCode.BadRequest, response.StatusCode);
var content = await response.Content.ReadAsStringAsync();
Assert.Contains("already_completed", content);
}
[Fact]
public async Task RetryDelivery_ReturnsBadRequest_WhenDeliveryAlreadyDelivered()
{
// Arrange
var delivery = CreateDelivery("delivery-delivered", NotifyDeliveryStatus.Delivered);
await _deliveryRepository.UpsertAsync(delivery, CancellationToken.None);
// Act
var response = await _client.PostAsJsonAsync(
"/api/v2/notify/deliveries/delivery-delivered/retry",
new { },
cancellationToken: CancellationToken.None);
// Assert
Assert.Equal(HttpStatusCode.BadRequest, response.StatusCode);
}
[Fact]
public async Task RetryDelivery_ReturnsOk_WhenDeliveryFailed()
{
// Arrange
var delivery = CreateDelivery("delivery-failed", NotifyDeliveryStatus.Failed);
await _deliveryRepository.UpsertAsync(delivery, CancellationToken.None);
// Act
var response = await _client.PostAsJsonAsync(
"/api/v2/notify/deliveries/delivery-failed/retry",
new { reason = "Manual retry request" },
cancellationToken: CancellationToken.None);
// Assert
Assert.Equal(HttpStatusCode.OK, response.StatusCode);
var result = await response.Content.ReadFromJsonAsync<JsonElement>(cancellationToken: CancellationToken.None);
Assert.Equal("delivery-failed", result.GetProperty("deliveryId").GetString());
Assert.Equal("Pending", result.GetProperty("status").GetString());
}
[Fact]
public async Task RetryDelivery_ReturnsOk_WhenDeliveryPending()
{
// Arrange
var delivery = CreateDelivery("delivery-pending", NotifyDeliveryStatus.Pending);
await _deliveryRepository.UpsertAsync(delivery, CancellationToken.None);
// Act
var response = await _client.PostAsJsonAsync(
"/api/v2/notify/deliveries/delivery-pending/retry",
new { },
cancellationToken: CancellationToken.None);
// Assert
Assert.Equal(HttpStatusCode.OK, response.StatusCode);
}
[Fact]
public async Task RetryDelivery_IncrementsAttemptCount()
{
// Arrange
var delivery = CreateDelivery("delivery-retry-attempt", NotifyDeliveryStatus.Failed);
await _deliveryRepository.UpsertAsync(delivery, CancellationToken.None);
var initialAttempts = delivery.Attempts.Length;
// Act
var response = await _client.PostAsJsonAsync(
"/api/v2/notify/deliveries/delivery-retry-attempt/retry",
new { },
cancellationToken: CancellationToken.None);
// Assert
Assert.Equal(HttpStatusCode.OK, response.StatusCode);
var result = await response.Content.ReadFromJsonAsync<JsonElement>(cancellationToken: CancellationToken.None);
Assert.Equal(initialAttempts + 1, result.GetProperty("attemptCount").GetInt32());
}
#endregion
#region Delivery Stats Tests
[Fact]
public async Task GetDeliveryStats_ReturnsBadRequest_WhenTenantMissing()
{
// Arrange
var clientWithoutTenant = _factory.CreateClient();
// Act
var response = await clientWithoutTenant.GetAsync(
"/api/v2/notify/deliveries/stats",
CancellationToken.None);
// Assert
Assert.Equal(HttpStatusCode.BadRequest, response.StatusCode);
}
[Fact]
public async Task GetDeliveryStats_ReturnsEmptyStats_WhenNoDeliveries()
{
// Act
var response = await _client.GetAsync(
"/api/v2/notify/deliveries/stats",
CancellationToken.None);
// Assert
Assert.Equal(HttpStatusCode.OK, response.StatusCode);
var result = await response.Content.ReadFromJsonAsync<JsonElement>(cancellationToken: CancellationToken.None);
Assert.Equal(0, result.GetProperty("total").GetInt32());
Assert.Equal(0, result.GetProperty("sent").GetInt32());
Assert.Equal(0, result.GetProperty("failed").GetInt32());
Assert.Equal(0, result.GetProperty("pending").GetInt32());
}
[Fact]
public async Task GetDeliveryStats_ReturnsCorrectCounts()
{
// Arrange
await _deliveryRepository.UpsertAsync(CreateDelivery("d1", NotifyDeliveryStatus.Sent), CancellationToken.None);
await _deliveryRepository.UpsertAsync(CreateDelivery("d2", NotifyDeliveryStatus.Sent), CancellationToken.None);
await _deliveryRepository.UpsertAsync(CreateDelivery("d3", NotifyDeliveryStatus.Failed), CancellationToken.None);
await _deliveryRepository.UpsertAsync(CreateDelivery("d4", NotifyDeliveryStatus.Pending), CancellationToken.None);
await _deliveryRepository.UpsertAsync(CreateDelivery("d5", NotifyDeliveryStatus.Delivered), CancellationToken.None);
// Act
var response = await _client.GetAsync(
"/api/v2/notify/deliveries/stats",
CancellationToken.None);
// Assert
Assert.Equal(HttpStatusCode.OK, response.StatusCode);
var result = await response.Content.ReadFromJsonAsync<JsonElement>(cancellationToken: CancellationToken.None);
Assert.Equal(5, result.GetProperty("total").GetInt32());
Assert.Equal(3, result.GetProperty("sent").GetInt32()); // Sent + Delivered
Assert.Equal(1, result.GetProperty("failed").GetInt32());
Assert.Equal(1, result.GetProperty("pending").GetInt32());
}
[Fact]
public async Task GetDeliveryStats_GroupsByChannel()
{
// Arrange
await _deliveryRepository.UpsertAsync(CreateDeliveryWithChannel("d1", "slack", NotifyDeliveryStatus.Sent), CancellationToken.None);
await _deliveryRepository.UpsertAsync(CreateDeliveryWithChannel("d2", "slack", NotifyDeliveryStatus.Sent), CancellationToken.None);
await _deliveryRepository.UpsertAsync(CreateDeliveryWithChannel("d3", "email", NotifyDeliveryStatus.Sent), CancellationToken.None);
// Act
var response = await _client.GetAsync(
"/api/v2/notify/deliveries/stats",
CancellationToken.None);
// Assert
Assert.Equal(HttpStatusCode.OK, response.StatusCode);
var result = await response.Content.ReadFromJsonAsync<JsonElement>(cancellationToken: CancellationToken.None);
var byChannel = result.GetProperty("byChannel");
Assert.Equal(2, byChannel.GetProperty("slack").GetInt32());
Assert.Equal(1, byChannel.GetProperty("email").GetInt32());
}
[Fact]
public async Task GetDeliveryStats_GroupsByEventKind()
{
// Arrange
await _deliveryRepository.UpsertAsync(CreateDeliveryWithEventKind("d1", "finding.created", NotifyDeliveryStatus.Sent), CancellationToken.None);
await _deliveryRepository.UpsertAsync(CreateDeliveryWithEventKind("d2", "finding.created", NotifyDeliveryStatus.Sent), CancellationToken.None);
await _deliveryRepository.UpsertAsync(CreateDeliveryWithEventKind("d3", "policy.promoted", NotifyDeliveryStatus.Sent), CancellationToken.None);
// Act
var response = await _client.GetAsync(
"/api/v2/notify/deliveries/stats",
CancellationToken.None);
// Assert
Assert.Equal(HttpStatusCode.OK, response.StatusCode);
var result = await response.Content.ReadFromJsonAsync<JsonElement>(cancellationToken: CancellationToken.None);
var byEventKind = result.GetProperty("byEventKind");
Assert.Equal(2, byEventKind.GetProperty("finding.created").GetInt32());
Assert.Equal(1, byEventKind.GetProperty("policy.promoted").GetInt32());
}
#endregion
#region Helpers
private static NotifyDelivery CreateDelivery(string deliveryId, NotifyDeliveryStatus status)
{
return NotifyDelivery.Create(
deliveryId: deliveryId,
tenantId: "test-tenant",
ruleId: "rule-001",
actionId: "slack:alerts",
eventId: Guid.NewGuid(),
kind: "finding.created",
status: status,
statusReason: "Test delivery",
createdAt: DateTimeOffset.UtcNow);
}
private static NotifyDelivery CreateDeliveryWithChannel(string deliveryId, string channel, NotifyDeliveryStatus status)
{
return NotifyDelivery.Create(
deliveryId: deliveryId,
tenantId: "test-tenant",
ruleId: "rule-001",
actionId: channel,
eventId: Guid.NewGuid(),
kind: "finding.created",
status: status,
statusReason: "Test delivery",
createdAt: DateTimeOffset.UtcNow);
}
private static NotifyDelivery CreateDeliveryWithEventKind(string deliveryId, string eventKind, NotifyDeliveryStatus status)
{
return NotifyDelivery.Create(
deliveryId: deliveryId,
tenantId: "test-tenant",
ruleId: "rule-001",
actionId: "slack:alerts",
eventId: Guid.NewGuid(),
kind: eventKind,
status: status,
statusReason: "Test delivery",
createdAt: DateTimeOffset.UtcNow);
}
#endregion
#region Test Repositories
private sealed class InMemoryDeliveryRepository : INotifyDeliveryRepository
{
private readonly Dictionary<string, NotifyDelivery> _deliveries = new();
public Task AppendAsync(NotifyDelivery delivery, CancellationToken cancellationToken = default)
{
var key = $"{delivery.TenantId}:{delivery.DeliveryId}";
_deliveries[key] = delivery;
return Task.CompletedTask;
}
public Task UpdateAsync(NotifyDelivery delivery, CancellationToken cancellationToken = default)
{
var key = $"{delivery.TenantId}:{delivery.DeliveryId}";
_deliveries[key] = delivery;
return Task.CompletedTask;
}
public Task<NotifyDelivery?> GetAsync(string tenantId, string deliveryId, CancellationToken cancellationToken = default)
{
var key = $"{tenantId}:{deliveryId}";
return Task.FromResult(_deliveries.GetValueOrDefault(key));
}
public Task<IReadOnlyList<NotifyDelivery>> ListAsync(string tenantId, CancellationToken cancellationToken = default)
{
var result = _deliveries.Values
.Where(d => d.TenantId == tenantId)
.ToList();
return Task.FromResult<IReadOnlyList<NotifyDelivery>>(result);
}
public Task<IReadOnlyList<NotifyDelivery>> ListPendingAsync(int limit = 100, CancellationToken cancellationToken = default)
{
var result = _deliveries.Values
.Where(d => d.Status == NotifyDeliveryStatus.Pending)
.Take(limit)
.ToList();
return Task.FromResult<IReadOnlyList<NotifyDelivery>>(result);
}
public Task<NotifyDeliveryQueryResult> QueryAsync(
string tenantId,
DateTimeOffset? since,
string? status,
int limit,
string? continuationToken = null,
CancellationToken cancellationToken = default)
{
var query = _deliveries.Values.Where(d => d.TenantId == tenantId);
if (since.HasValue)
{
query = query.Where(d => d.CreatedAt >= since.Value);
}
if (!string.IsNullOrEmpty(status) && Enum.TryParse<NotifyDeliveryStatus>(status, true, out var statusEnum))
{
query = query.Where(d => d.Status == statusEnum);
}
var result = query.Take(limit).ToList();
return Task.FromResult(new NotifyDeliveryQueryResult(result, null));
}
// Helper for tests to add deliveries
public Task UpsertAsync(NotifyDelivery delivery, CancellationToken cancellationToken = default)
{
return AppendAsync(delivery, cancellationToken);
}
// Helper for tests to list all deliveries
public Task<IReadOnlyList<NotifyDelivery>> ListAllAsync(CancellationToken cancellationToken = default)
{
return Task.FromResult<IReadOnlyList<NotifyDelivery>>(_deliveries.Values.ToList());
}
}
private sealed class InMemoryAuditRepository : INotifyAuditRepository
{
private readonly List<NotifyAuditEntry> _entries = new();
public Task AppendAsync(
string tenantId,
string action,
string? actor,
IReadOnlyDictionary<string, string> data,
CancellationToken cancellationToken = default)
{
_entries.Add(new NotifyAuditEntry(tenantId, action, actor, DateTimeOffset.UtcNow, data));
return Task.CompletedTask;
}
public Task AppendAsync(NotifyAuditEntryDocument entry, CancellationToken cancellationToken = default)
{
var dict = new Dictionary<string, string>();
if (entry.Payload is not null)
{
foreach (var prop in entry.Payload)
{
dict[prop.Key] = prop.Value?.ToString() ?? "";
}
}
_entries.Add(new NotifyAuditEntry(entry.TenantId, entry.Action, entry.Actor, entry.Timestamp, dict));
return Task.CompletedTask;
}
public Task<IReadOnlyList<NotifyAuditEntry>> QueryAsync(
string tenantId,
DateTimeOffset since,
int limit,
CancellationToken cancellationToken = default)
{
var result = _entries
.Where(e => e.TenantId == tenantId && e.Timestamp >= since)
.Take(limit)
.ToList();
return Task.FromResult<IReadOnlyList<NotifyAuditEntry>>(result);
}
}
#endregion
}

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@@ -38,4 +38,5 @@
<ProjectReference Include="..\..\..\Notify\__Libraries\StellaOps.Notify.Queue\StellaOps.Notify.Queue.csproj" />
<ProjectReference Include="../../../__Libraries/StellaOps.TestKit/StellaOps.TestKit.csproj" />
</ItemGroup>
</Project>
</Project>

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@@ -0,0 +1,109 @@
namespace StellaOps.Notifier.WebService.Contracts;
/// <summary>
/// API contracts for delivery history and retry endpoints.
/// Sprint: SPRINT_20251229_018b_FE_notification_delivery_audit
/// Task: NOTIFY-016
/// </summary>
/// <summary>
/// Response for delivery listing.
/// </summary>
public sealed record DeliveryListResponse
{
public required IReadOnlyList<DeliveryResponse> Items { get; init; }
public required int Total { get; init; }
public string? ContinuationToken { get; init; }
}
/// <summary>
/// Individual delivery response.
/// </summary>
public sealed record DeliveryResponse
{
public required string DeliveryId { get; init; }
public required string TenantId { get; init; }
public required string RuleId { get; init; }
public required string ChannelId { get; init; }
public string? EventId { get; init; }
public string? EventKind { get; init; }
public string? Target { get; init; }
public required string Status { get; init; }
public required IReadOnlyList<DeliveryAttemptResponse> Attempts { get; init; }
public required int RetryCount { get; init; }
public string? NextRetryAt { get; init; }
public string? Subject { get; init; }
public string? ErrorMessage { get; init; }
public required string CreatedAt { get; init; }
public string? SentAt { get; init; }
public string? CompletedAt { get; init; }
}
/// <summary>
/// Individual delivery attempt response.
/// </summary>
public sealed record DeliveryAttemptResponse
{
public required int AttemptNumber { get; init; }
public required string Timestamp { get; init; }
public required string Status { get; init; }
public int? StatusCode { get; init; }
public string? ErrorMessage { get; init; }
public int? ResponseTimeMs { get; init; }
}
/// <summary>
/// Request to retry a failed delivery.
/// </summary>
public sealed record DeliveryRetryRequest
{
public string? ForceChannel { get; init; }
public bool BypassThrottle { get; init; }
public string? Reason { get; init; }
}
/// <summary>
/// Response from retry operation.
/// </summary>
public sealed record DeliveryRetryResponse
{
public required string DeliveryId { get; init; }
public required bool Retried { get; init; }
public required int NewAttemptNumber { get; init; }
public required string ScheduledAt { get; init; }
public string? Message { get; init; }
}
/// <summary>
/// Delivery statistics response.
/// </summary>
public sealed record DeliveryStatsResponse
{
public required int TotalSent { get; init; }
public required int TotalFailed { get; init; }
public required int TotalThrottled { get; init; }
public required int TotalPending { get; init; }
public required double AvgDeliveryTimeMs { get; init; }
public required double SuccessRate { get; init; }
public required string Period { get; init; }
public required IReadOnlyDictionary<string, ChannelStatsResponse> ByChannel { get; init; }
public required IReadOnlyDictionary<string, EventKindStatsResponse> ByEventKind { get; init; }
}
/// <summary>
/// Statistics by channel.
/// </summary>
public sealed record ChannelStatsResponse
{
public required int Sent { get; init; }
public required int Failed { get; init; }
}
/// <summary>
/// Statistics by event kind.
/// </summary>
public sealed record EventKindStatsResponse
{
public required int Sent { get; init; }
public required int Failed { get; init; }
}

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@@ -896,6 +896,146 @@ app.MapGet("/api/v2/notify/deliveries/{deliveryId}", async (
: Results.NotFound(Error("not_found", $"Delivery {deliveryId} not found.", context));
});
// =============================================
// Delivery Retry and Stats (NOTIFY-016)
// =============================================
app.MapPost("/api/v2/notify/deliveries/{deliveryId}/retry", async (
HttpContext context,
string deliveryId,
StellaOps.Notifier.WebService.Contracts.DeliveryRetryRequest? request,
INotifyDeliveryRepository deliveryRepository,
INotifyAuditRepository auditRepository,
TimeProvider timeProvider) =>
{
var tenantId = context.Request.Headers["X-StellaOps-Tenant"].ToString();
if (string.IsNullOrWhiteSpace(tenantId))
{
return Results.BadRequest(Error("tenant_missing", "X-StellaOps-Tenant header is required.", context));
}
var actor = context.Request.Headers["X-StellaOps-Actor"].ToString();
if (string.IsNullOrWhiteSpace(actor)) actor = "api";
var delivery = await deliveryRepository.GetAsync(tenantId, deliveryId, context.RequestAborted).ConfigureAwait(false);
if (delivery is null)
{
return Results.NotFound(Error("not_found", $"Delivery {deliveryId} not found.", context));
}
if (delivery.Status == NotifyDeliveryStatus.Sent || delivery.Status == NotifyDeliveryStatus.Delivered)
{
return Results.BadRequest(Error("delivery_already_completed", "Cannot retry a completed delivery.", context));
}
var now = timeProvider.GetUtcNow();
var newAttemptNumber = delivery.Attempts.Length + 1;
// Create new attempt and update delivery to pending status for retry
var newAttempt = new NotifyDeliveryAttempt(now, NotifyDeliveryAttemptStatus.Enqueued);
var updatedDelivery = NotifyDelivery.Create(
delivery.DeliveryId,
delivery.TenantId,
delivery.RuleId,
delivery.ActionId,
delivery.EventId,
delivery.Kind,
NotifyDeliveryStatus.Pending,
"Retry requested",
delivery.Rendered,
delivery.Attempts.Append(newAttempt),
delivery.Metadata,
delivery.CreatedAt);
await deliveryRepository.UpdateAsync(updatedDelivery, context.RequestAborted).ConfigureAwait(false);
// Audit the retry
try
{
await auditRepository.AppendAsync(new NotifyAuditEntryDocument
{
TenantId = tenantId,
Actor = actor,
Action = "delivery.retry",
EntityId = deliveryId,
EntityType = "delivery",
Timestamp = now,
Payload = System.Text.Json.JsonSerializer.SerializeToNode(new { deliveryId, reason = request?.Reason, forceChannel = request?.ForceChannel }) as System.Text.Json.Nodes.JsonObject
}, context.RequestAborted).ConfigureAwait(false);
}
catch { /* Ignore audit failures */ }
return Results.Ok(new
{
deliveryId,
retried = true,
newAttemptNumber,
scheduledAt = now.ToString("O"),
message = "Delivery scheduled for retry"
});
});
app.MapGet("/api/v2/notify/deliveries/stats", async (
HttpContext context,
INotifyDeliveryRepository deliveryRepository) =>
{
var tenantId = context.Request.Headers["X-StellaOps-Tenant"].ToString();
if (string.IsNullOrWhiteSpace(tenantId))
{
return Results.BadRequest(Error("tenant_missing", "X-StellaOps-Tenant header is required.", context));
}
var allDeliveries = await deliveryRepository.ListAsync(tenantId, context.RequestAborted).ConfigureAwait(false);
var sent = allDeliveries.Count(d => d.Status == NotifyDeliveryStatus.Sent || d.Status == NotifyDeliveryStatus.Delivered);
var failed = allDeliveries.Count(d => d.Status == NotifyDeliveryStatus.Failed);
var throttled = allDeliveries.Count(d => d.Status == NotifyDeliveryStatus.Throttled);
var pending = allDeliveries.Count(d => d.Status == NotifyDeliveryStatus.Pending);
var total = sent + failed;
// Calculate average delivery time from attempts that have status codes (indicating completion)
var completedAttempts = allDeliveries
.Where(d => d.Attempts.Length > 0)
.SelectMany(d => d.Attempts)
.Where(a => a.StatusCode.HasValue)
.ToList();
var avgDeliveryTime = completedAttempts.Count > 0 ? 0.0 : 0.0; // Response time not tracked in this model
var byChannel = allDeliveries
.GroupBy(d => d.ActionId)
.ToDictionary(
g => g.Key,
g => new
{
sent = g.Count(d => d.Status == NotifyDeliveryStatus.Sent || d.Status == NotifyDeliveryStatus.Delivered),
failed = g.Count(d => d.Status == NotifyDeliveryStatus.Failed)
});
var byEventKind = allDeliveries
.GroupBy(d => d.Kind)
.ToDictionary(
g => g.Key,
g => new
{
sent = g.Count(d => d.Status == NotifyDeliveryStatus.Sent || d.Status == NotifyDeliveryStatus.Delivered),
failed = g.Count(d => d.Status == NotifyDeliveryStatus.Failed)
});
return Results.Ok(new
{
totalSent = sent,
totalFailed = failed,
totalThrottled = throttled,
totalPending = pending,
avgDeliveryTimeMs = avgDeliveryTime,
successRate = total > 0 ? (double)sent / total * 100 : 0,
period = "day",
byChannel,
byEventKind
});
});
// =============================================
// Simulation API (NOTIFY-SVC-39-003)
// =============================================