diff --git a/src/HealthChecks/Abstractions/Directory.Build.props b/src/HealthChecks/Abstractions/Directory.Build.props new file mode 100644 index 0000000000..f25c1d90ce --- /dev/null +++ b/src/HealthChecks/Abstractions/Directory.Build.props @@ -0,0 +1,7 @@ + + + + + true + + diff --git a/src/HealthChecks/Abstractions/src/HealthCheckContext.cs b/src/HealthChecks/Abstractions/src/HealthCheckContext.cs new file mode 100644 index 0000000000..027451c0d2 --- /dev/null +++ b/src/HealthChecks/Abstractions/src/HealthCheckContext.cs @@ -0,0 +1,13 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +namespace Microsoft.Extensions.Diagnostics.HealthChecks +{ + public sealed class HealthCheckContext + { + /// + /// Gets or sets the of the currently executing . + /// + public HealthCheckRegistration Registration { get; set; } + } +} diff --git a/src/HealthChecks/Abstractions/src/HealthCheckRegistration.cs b/src/HealthChecks/Abstractions/src/HealthCheckRegistration.cs new file mode 100644 index 0000000000..9291c38846 --- /dev/null +++ b/src/HealthChecks/Abstractions/src/HealthCheckRegistration.cs @@ -0,0 +1,132 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; +using System.Collections.Generic; + +namespace Microsoft.Extensions.Diagnostics.HealthChecks +{ + /// + /// Represent the registration information associated with an implementation. + /// + /// + /// + /// The health check registration is provided as a separate object so that application developers can customize + /// how health check implementations are configured. + /// + /// + /// The registration is provided to an implementation during execution through + /// . This allows a health check implementation to access named + /// options or perform other operations based on the registered name. + /// + /// + public sealed class HealthCheckRegistration + { + private Func _factory; + private string _name; + + /// + /// Creates a new for an existing instance. + /// + /// The health check name. + /// The instance. + /// + /// The that should be reported upon failure of the health check. If the provided value + /// is null, then will be reported. + /// + /// A list of tags that can be used for filtering health checks. + public HealthCheckRegistration(string name, IHealthCheck instance, HealthStatus? failureStatus, IEnumerable tags) + { + if (name == null) + { + throw new ArgumentNullException(nameof(name)); + } + + if (instance == null) + { + throw new ArgumentNullException(nameof(instance)); + } + + Name = name; + FailureStatus = failureStatus ?? HealthStatus.Unhealthy; + Tags = new HashSet(tags ?? Array.Empty(), StringComparer.OrdinalIgnoreCase); + Factory = (_) => instance; + } + + /// + /// Creates a new for an existing instance. + /// + /// The health check name. + /// A delegate used to create the instance. + /// + /// The that should be reported when the health check reports a failure. If the provided value + /// is null, then will be reported. + /// + /// A list of tags that can be used for filtering health checks. + public HealthCheckRegistration( + string name, + Func factory, + HealthStatus? failureStatus, + IEnumerable tags) + { + if (name == null) + { + throw new ArgumentNullException(nameof(name)); + } + + if (factory == null) + { + throw new ArgumentNullException(nameof(factory)); + } + + Name = name; + FailureStatus = failureStatus ?? HealthStatus.Unhealthy; + Tags = new HashSet(tags ?? Array.Empty(), StringComparer.OrdinalIgnoreCase); + Factory = factory; + } + + /// + /// Gets or sets a delegate used to create the instance. + /// + public Func Factory + { + get => _factory; + set + { + if (value == null) + { + throw new ArgumentNullException(nameof(value)); + } + + _factory = value; + } + } + + /// + /// Gets or sets the that should be reported upon failure of the health check. + /// + public HealthStatus FailureStatus { get; set; } + + /// + /// Gets or sets the health check name. + /// + public string Name + { + get => _name; + set + { + if (value == null) + { + throw new ArgumentNullException(nameof(value)); + } + + _name = value; + } + } + + /// + /// Gets a list of tags that can be used for filtering health checks. + /// + public ISet Tags { get; } + } +} diff --git a/src/HealthChecks/Abstractions/src/HealthCheckResult.cs b/src/HealthChecks/Abstractions/src/HealthCheckResult.cs new file mode 100644 index 0000000000..e01cb5aceb --- /dev/null +++ b/src/HealthChecks/Abstractions/src/HealthCheckResult.cs @@ -0,0 +1,88 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; +using System.Collections.Generic; + +namespace Microsoft.Extensions.Diagnostics.HealthChecks +{ + /// + /// Represents the result of a health check. + /// + public struct HealthCheckResult + { + private static readonly IReadOnlyDictionary _emptyReadOnlyDictionary = new Dictionary(); + + /// + /// Creates a new with the specified values for , + /// , , and . + /// + /// A value indicating the status of the component that was checked. + /// A human-readable description of the status of the component that was checked. + /// An representing the exception that was thrown when checking for status (if any). + /// Additional key-value pairs describing the health of the component. + public HealthCheckResult(HealthStatus status, string description = null, Exception exception = null, IReadOnlyDictionary data = null) + { + Status = status; + Description = description; + Exception = exception; + Data = data ?? _emptyReadOnlyDictionary; + } + + /// + /// Gets additional key-value pairs describing the health of the component. + /// + public IReadOnlyDictionary Data { get; } + + /// + /// Gets a human-readable description of the status of the component that was checked. + /// + public string Description { get; } + + /// + /// Gets an representing the exception that was thrown when checking for status (if any). + /// + public Exception Exception { get; } + + /// + /// Gets a value indicating the status of the component that was checked. + /// + public HealthStatus Status { get; } + + /// + /// Creates a representing a healthy component. + /// + /// A human-readable description of the status of the component that was checked. Optional. + /// Additional key-value pairs describing the health of the component. Optional. + /// A representing a healthy component. + public static HealthCheckResult Healthy(string description = null, IReadOnlyDictionary data = null) + { + return new HealthCheckResult(status: HealthStatus.Healthy, description, exception: null, data); + } + + + /// + /// Creates a representing a degraded component. + /// + /// A human-readable description of the status of the component that was checked. Optional. + /// An representing the exception that was thrown when checking for status. Optional. + /// Additional key-value pairs describing the health of the component. Optional. + /// A representing a degraged component. + public static HealthCheckResult Degraded(string description = null, Exception exception = null, IReadOnlyDictionary data = null) + { + return new HealthCheckResult(status: HealthStatus.Degraded, description, exception: null, data); + } + + /// + /// Creates a representing an unhealthy component. + /// + /// A human-readable description of the status of the component that was checked. Optional. + /// An representing the exception that was thrown when checking for status. Optional. + /// Additional key-value pairs describing the health of the component. Optional. + /// A representing an unhealthy component. + public static HealthCheckResult Unhealthy(string description = null, Exception exception = null, IReadOnlyDictionary data = null) + { + return new HealthCheckResult(status: HealthStatus.Unhealthy, description, exception, data); + } + } +} diff --git a/src/HealthChecks/Abstractions/src/HealthReport.cs b/src/HealthChecks/Abstractions/src/HealthReport.cs new file mode 100644 index 0000000000..91ed798811 --- /dev/null +++ b/src/HealthChecks/Abstractions/src/HealthReport.cs @@ -0,0 +1,68 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; +using System.Collections.Generic; + +namespace Microsoft.Extensions.Diagnostics.HealthChecks +{ + /// + /// Represents the result of executing a group of instances. + /// + public sealed class HealthReport + { + /// + /// Create a new from the specified results. + /// + /// A containing the results from each health check. + /// A value indicating the time the health check service took to execute. + public HealthReport(IReadOnlyDictionary entries, TimeSpan totalDuration) + { + Entries = entries; + Status = CalculateAggregateStatus(entries.Values); + TotalDuration = totalDuration; + } + + /// + /// A containing the results from each health check. + /// + /// + /// The keys in this dictionary map the name of each executed health check to a for the + /// result data retruned from the corresponding health check. + /// + public IReadOnlyDictionary Entries { get; } + + /// + /// Gets a representing the aggregate status of all the health checks. The value of + /// will be the most servere status reported by a health check. If no checks were executed, the value is always . + /// + public HealthStatus Status { get; } + + /// + /// Gets the time the health check service took to execute. + /// + public TimeSpan TotalDuration { get; } + + private HealthStatus CalculateAggregateStatus(IEnumerable entries) + { + // This is basically a Min() check, but we know the possible range, so we don't need to walk the whole list + var currentValue = HealthStatus.Healthy; + foreach (var entry in entries) + { + if (currentValue > entry.Status) + { + currentValue = entry.Status; + } + + if (currentValue == HealthStatus.Unhealthy) + { + // Game over, man! Game over! + // (We hit the worst possible status, so there's no need to keep iterating) + return currentValue; + } + } + + return currentValue; + } + } +} diff --git a/src/HealthChecks/Abstractions/src/HealthReportEntry.cs b/src/HealthChecks/Abstractions/src/HealthReportEntry.cs new file mode 100644 index 0000000000..6e7d6c6b8e --- /dev/null +++ b/src/HealthChecks/Abstractions/src/HealthReportEntry.cs @@ -0,0 +1,59 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; +using System.Collections.Generic; + +namespace Microsoft.Extensions.Diagnostics.HealthChecks +{ + /// + /// Represents an entry in a . Corresponds to the result of a single . + /// + public struct HealthReportEntry + { + private static readonly IReadOnlyDictionary _emptyReadOnlyDictionary = new Dictionary(); + + /// + /// Creates a new with the specified values for , , + /// , and . + /// + /// A value indicating the health status of the component that was checked. + /// A human-readable description of the status of the component that was checked. + /// A value indicating the health execution duration. + /// An representing the exception that was thrown when checking for status (if any). + /// Additional key-value pairs describing the health of the component. + public HealthReportEntry(HealthStatus status, string description, TimeSpan duration, Exception exception, IReadOnlyDictionary data) + { + Status = status; + Description = description; + Duration = duration; + Exception = exception; + Data = data ?? _emptyReadOnlyDictionary; + } + + /// + /// Gets additional key-value pairs describing the health of the component. + /// + public IReadOnlyDictionary Data { get; } + + /// + /// Gets a human-readable description of the status of the component that was checked. + /// + public string Description { get; } + + /// + /// Gets the health check execution duration. + /// + public TimeSpan Duration { get; } + + /// + /// Gets an representing the exception that was thrown when checking for status (if any). + /// + public Exception Exception { get; } + + /// + /// Gets the health status of the component that was checked. + /// + public HealthStatus Status { get; } + } +} diff --git a/src/HealthChecks/Abstractions/src/HealthStatus.cs b/src/HealthChecks/Abstractions/src/HealthStatus.cs new file mode 100644 index 0000000000..61b76d54fa --- /dev/null +++ b/src/HealthChecks/Abstractions/src/HealthStatus.cs @@ -0,0 +1,37 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +namespace Microsoft.Extensions.Diagnostics.HealthChecks +{ + /// + /// Represents the reported status of a health check result. + /// + /// + /// + /// A status of should be considered the default value for a failing health check. Application + /// developers may configure a health check to report a different status as desired. + /// + /// + /// The values of this enum or ordered from least healthy to most healthy. So is + /// greater than but less than . + /// + /// + public enum HealthStatus + { + /// + /// Indicates that the health check determined that the component was unhealthy, or an unhandled + /// exception was thrown while executing the health check. + /// + Unhealthy = 0, + + /// + /// Indicates that the health check determined that the component was in a degraded state. + /// + Degraded = 1, + + /// + /// Indicates that the health check determined that the component was healthy. + /// + Healthy = 2, + } +} diff --git a/src/HealthChecks/Abstractions/src/IHealthCheck.cs b/src/HealthChecks/Abstractions/src/IHealthCheck.cs new file mode 100644 index 0000000000..1b69953b67 --- /dev/null +++ b/src/HealthChecks/Abstractions/src/IHealthCheck.cs @@ -0,0 +1,23 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System.Threading; +using System.Threading.Tasks; + +namespace Microsoft.Extensions.Diagnostics.HealthChecks +{ + /// + /// Represents a health check, which can be used to check the status of a component in the application, such as a backend service, database or some internal + /// state. + /// + public interface IHealthCheck + { + /// + /// Runs the health check, returning the status of the component being checked. + /// + /// A context object associated with the current execution. + /// A that can be used to cancel the health check. + /// A that completes when the health check has finished, yielding the status of the component being checked. + Task CheckHealthAsync(HealthCheckContext context, CancellationToken cancellationToken = default); + } +} diff --git a/src/HealthChecks/Abstractions/src/IHealthCheckPublisher.cs b/src/HealthChecks/Abstractions/src/IHealthCheckPublisher.cs new file mode 100644 index 0000000000..f1809c4bb8 --- /dev/null +++ b/src/HealthChecks/Abstractions/src/IHealthCheckPublisher.cs @@ -0,0 +1,39 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System.Threading; +using System.Threading.Tasks; + +namespace Microsoft.Extensions.Diagnostics.HealthChecks +{ + /// + /// Represents a publisher of information. + /// + /// + /// + /// The default health checks implementation provided an IHostedService implementation that can + /// be used to execute health checks at regular intervals and provide the resulting + /// data to all registered instances. + /// + /// + /// To provide an implementation, register an instance or type as a singleton + /// service in the dependency injection container. + /// + /// + /// instances are provided with a after executing + /// health checks in a background thread. The use of depend on hosting in + /// an application using IWebHost or generic host (IHost). Execution of + /// instance is not related to execution of health checks via a middleware. + /// + /// + public interface IHealthCheckPublisher + { + /// + /// Publishes the provided . + /// + /// The . The result of executing a set of health checks. + /// The . + /// A which will complete when publishing is complete. + Task PublishAsync(HealthReport report, CancellationToken cancellationToken); + } +} diff --git a/src/HealthChecks/Abstractions/src/Microsoft.Extensions.Diagnostics.HealthChecks.Abstractions.csproj b/src/HealthChecks/Abstractions/src/Microsoft.Extensions.Diagnostics.HealthChecks.Abstractions.csproj new file mode 100644 index 0000000000..b95d66f7b3 --- /dev/null +++ b/src/HealthChecks/Abstractions/src/Microsoft.Extensions.Diagnostics.HealthChecks.Abstractions.csproj @@ -0,0 +1,16 @@ + + + + Abstractions for defining health checks in .NET applications + +Commonly Used Types +Microsoft.Extensions.Diagnostics.HealthChecks.IHealthCheck + + Microsoft.Extensions.Diagnostics.HealthChecks + netstandard2.0 + $(NoWarn);CS1591 + true + diagnostics;healthchecks + + + diff --git a/src/HealthChecks/Abstractions/src/baseline.netcore.json b/src/HealthChecks/Abstractions/src/baseline.netcore.json new file mode 100644 index 0000000000..871db4c089 --- /dev/null +++ b/src/HealthChecks/Abstractions/src/baseline.netcore.json @@ -0,0 +1,5 @@ +{ + "AssemblyIdentity": "Microsoft.Extensions.Diagnostics.HealthChecks.Abstractions, Version=2.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60", + "Types": [ + ] +} \ No newline at end of file diff --git a/src/HealthChecks/HealthChecks/Directory.Build.props b/src/HealthChecks/HealthChecks/Directory.Build.props new file mode 100644 index 0000000000..f25c1d90ce --- /dev/null +++ b/src/HealthChecks/HealthChecks/Directory.Build.props @@ -0,0 +1,7 @@ + + + + + true + + diff --git a/src/HealthChecks/HealthChecks/src/DefaultHealthCheckService.cs b/src/HealthChecks/HealthChecks/src/DefaultHealthCheckService.cs new file mode 100644 index 0000000000..d5d71d9cb4 --- /dev/null +++ b/src/HealthChecks/HealthChecks/src/DefaultHealthCheckService.cs @@ -0,0 +1,304 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; +using System.Collections; +using System.Collections.Generic; +using System.Linq; +using System.Text; +using System.Threading; +using System.Threading.Tasks; +using Microsoft.Extensions.DependencyInjection; +using Microsoft.Extensions.Internal; +using Microsoft.Extensions.Logging; +using Microsoft.Extensions.Options; + +namespace Microsoft.Extensions.Diagnostics.HealthChecks +{ + internal class DefaultHealthCheckService : HealthCheckService + { + private readonly IServiceScopeFactory _scopeFactory; + private readonly IOptions _options; + private readonly ILogger _logger; + + public DefaultHealthCheckService( + IServiceScopeFactory scopeFactory, + IOptions options, + ILogger logger) + { + _scopeFactory = scopeFactory ?? throw new ArgumentNullException(nameof(scopeFactory)); + _options = options ?? throw new ArgumentNullException(nameof(options)); + _logger = logger ?? throw new ArgumentNullException(nameof(logger)); + + // We're specifically going out of our way to do this at startup time. We want to make sure you + // get any kind of health-check related error as early as possible. Waiting until someone + // actually tries to **run** health checks would be real baaaaad. + ValidateRegistrations(_options.Value.Registrations); + } + public override async Task CheckHealthAsync( + Func predicate, + CancellationToken cancellationToken = default) + { + var registrations = _options.Value.Registrations; + + using (var scope = _scopeFactory.CreateScope()) + { + var context = new HealthCheckContext(); + var entries = new Dictionary(StringComparer.OrdinalIgnoreCase); + + var totalTime = ValueStopwatch.StartNew(); + Log.HealthCheckProcessingBegin(_logger); + + foreach (var registration in registrations) + { + if (predicate != null && !predicate(registration)) + { + continue; + } + + cancellationToken.ThrowIfCancellationRequested(); + + var healthCheck = registration.Factory(scope.ServiceProvider); + + // If the health check does things like make Database queries using EF or backend HTTP calls, + // it may be valuable to know that logs it generates are part of a health check. So we start a scope. + using (_logger.BeginScope(new HealthCheckLogScope(registration.Name))) + { + var stopwatch = ValueStopwatch.StartNew(); + context.Registration = registration; + + Log.HealthCheckBegin(_logger, registration); + + HealthReportEntry entry; + try + { + var result = await healthCheck.CheckHealthAsync(context, cancellationToken); + var duration = stopwatch.GetElapsedTime(); + + entry = new HealthReportEntry( + status: result.Status, + description: result.Description, + duration: duration, + exception: result.Exception, + data: result.Data); + + Log.HealthCheckEnd(_logger, registration, entry, duration); + Log.HealthCheckData(_logger, registration, entry); + } + + // Allow cancellation to propagate. + catch (Exception ex) when (ex as OperationCanceledException == null) + { + var duration = stopwatch.GetElapsedTime(); + entry = new HealthReportEntry( + status: HealthStatus.Unhealthy, + description: ex.Message, + duration: duration, + exception: ex, + data: null); + + Log.HealthCheckError(_logger, registration, ex, duration); + } + + entries[registration.Name] = entry; + } + } + + var totalElapsedTime = totalTime.GetElapsedTime(); + var report = new HealthReport(entries, totalElapsedTime); + Log.HealthCheckProcessingEnd(_logger, report.Status, totalElapsedTime); + return report; + } + } + + private static void ValidateRegistrations(IEnumerable registrations) + { + // Scan the list for duplicate names to provide a better error if there are duplicates. + var duplicateNames = registrations + .GroupBy(c => c.Name, StringComparer.OrdinalIgnoreCase) + .Where(g => g.Count() > 1) + .Select(g => g.Key) + .ToList(); + + if (duplicateNames.Count > 0) + { + throw new ArgumentException($"Duplicate health checks were registered with the name(s): {string.Join(", ", duplicateNames)}", nameof(registrations)); + } + } + + internal static class EventIds + { + public static readonly EventId HealthCheckProcessingBegin = new EventId(100, "HealthCheckProcessingBegin"); + public static readonly EventId HealthCheckProcessingEnd = new EventId(101, "HealthCheckProcessingEnd"); + + public static readonly EventId HealthCheckBegin = new EventId(102, "HealthCheckBegin"); + public static readonly EventId HealthCheckEnd = new EventId(103, "HealthCheckEnd"); + public static readonly EventId HealthCheckError = new EventId(104, "HealthCheckError"); + public static readonly EventId HealthCheckData = new EventId(105, "HealthCheckData"); + } + + private static class Log + { + private static readonly Action _healthCheckProcessingBegin = LoggerMessage.Define( + LogLevel.Debug, + EventIds.HealthCheckProcessingBegin, + "Running health checks"); + + private static readonly Action _healthCheckProcessingEnd = LoggerMessage.Define( + LogLevel.Debug, + EventIds.HealthCheckProcessingEnd, + "Health check processing completed after {ElapsedMilliseconds}ms with combined status {HealthStatus}"); + + private static readonly Action _healthCheckBegin = LoggerMessage.Define( + LogLevel.Debug, + EventIds.HealthCheckBegin, + "Running health check {HealthCheckName}"); + + // These are separate so they can have different log levels + private static readonly string HealthCheckEndText = "Health check {HealthCheckName} completed after {ElapsedMilliseconds}ms with status {HealthStatus} and '{HealthCheckDescription}'"; + + private static readonly Action _healthCheckEndHealthy = LoggerMessage.Define( + LogLevel.Debug, + EventIds.HealthCheckEnd, + HealthCheckEndText); + + private static readonly Action _healthCheckEndDegraded = LoggerMessage.Define( + LogLevel.Warning, + EventIds.HealthCheckEnd, + HealthCheckEndText); + + private static readonly Action _healthCheckEndUnhealthy = LoggerMessage.Define( + LogLevel.Error, + EventIds.HealthCheckEnd, + HealthCheckEndText); + + private static readonly Action _healthCheckEndFailed = LoggerMessage.Define( + LogLevel.Error, + EventIds.HealthCheckEnd, + HealthCheckEndText); + + private static readonly Action _healthCheckError = LoggerMessage.Define( + LogLevel.Error, + EventIds.HealthCheckError, + "Health check {HealthCheckName} threw an unhandled exception after {ElapsedMilliseconds}ms"); + + public static void HealthCheckProcessingBegin(ILogger logger) + { + _healthCheckProcessingBegin(logger, null); + } + + public static void HealthCheckProcessingEnd(ILogger logger, HealthStatus status, TimeSpan duration) + { + _healthCheckProcessingEnd(logger, duration.TotalMilliseconds, status, null); + } + + public static void HealthCheckBegin(ILogger logger, HealthCheckRegistration registration) + { + _healthCheckBegin(logger, registration.Name, null); + } + + public static void HealthCheckEnd(ILogger logger, HealthCheckRegistration registration, HealthReportEntry entry, TimeSpan duration) + { + switch (entry.Status) + { + case HealthStatus.Healthy: + _healthCheckEndHealthy(logger, registration.Name, duration.TotalMilliseconds, entry.Status, entry.Description, null); + break; + + case HealthStatus.Degraded: + _healthCheckEndDegraded(logger, registration.Name, duration.TotalMilliseconds, entry.Status, entry.Description, null); + break; + + case HealthStatus.Unhealthy: + _healthCheckEndUnhealthy(logger, registration.Name, duration.TotalMilliseconds, entry.Status, entry.Description, null); + break; + } + } + + public static void HealthCheckError(ILogger logger, HealthCheckRegistration registration, Exception exception, TimeSpan duration) + { + _healthCheckError(logger, registration.Name, duration.TotalMilliseconds, exception); + } + + public static void HealthCheckData(ILogger logger, HealthCheckRegistration registration, HealthReportEntry entry) + { + if (entry.Data.Count > 0 && logger.IsEnabled(LogLevel.Debug)) + { + logger.Log( + LogLevel.Debug, + EventIds.HealthCheckData, + new HealthCheckDataLogValue(registration.Name, entry.Data), + null, + (state, ex) => state.ToString()); + } + } + } + + internal class HealthCheckDataLogValue : IReadOnlyList> + { + private readonly string _name; + private readonly List> _values; + + private string _formatted; + + public HealthCheckDataLogValue(string name, IReadOnlyDictionary values) + { + _name = name; + _values = values.ToList(); + + // We add the name as a kvp so that you can filter by health check name in the logs. + // This is the same parameter name used in the other logs. + _values.Add(new KeyValuePair("HealthCheckName", name)); + } + + public KeyValuePair this[int index] + { + get + { + if (index < 0 || index >= Count) + { + throw new IndexOutOfRangeException(nameof(index)); + } + + return _values[index]; + } + } + + public int Count => _values.Count; + + public IEnumerator> GetEnumerator() + { + return _values.GetEnumerator(); + } + + IEnumerator IEnumerable.GetEnumerator() + { + return _values.GetEnumerator(); + } + + public override string ToString() + { + if (_formatted == null) + { + var builder = new StringBuilder(); + builder.AppendLine($"Health check data for {_name}:"); + + var values = _values; + for (var i = 0; i < values.Count; i++) + { + var kvp = values[i]; + builder.Append(" "); + builder.Append(kvp.Key); + builder.Append(": "); + + builder.AppendLine(kvp.Value?.ToString()); + } + + _formatted = builder.ToString(); + } + + return _formatted; + } + } + } +} diff --git a/src/HealthChecks/HealthChecks/src/DelegateHealthCheck.cs b/src/HealthChecks/HealthChecks/src/DelegateHealthCheck.cs new file mode 100644 index 0000000000..94069fd7d1 --- /dev/null +++ b/src/HealthChecks/HealthChecks/src/DelegateHealthCheck.cs @@ -0,0 +1,35 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; +using System.Threading; +using System.Threading.Tasks; + +namespace Microsoft.Extensions.Diagnostics.HealthChecks +{ + /// + /// A simple implementation of which uses a provided delegate to + /// implement the check. + /// + internal sealed class DelegateHealthCheck : IHealthCheck + { + private readonly Func> _check; + + /// + /// Create an instance of from the specified delegate. + /// + /// A delegate which provides the code to execute when the health check is run. + public DelegateHealthCheck(Func> check) + { + _check = check ?? throw new ArgumentNullException(nameof(check)); + } + + /// + /// Runs the health check, returning the status of the component being checked. + /// + /// A context object associated with the current execution. + /// A that can be used to cancel the health check. + /// A that completes when the health check has finished, yielding the status of the component being checked. + public Task CheckHealthAsync(HealthCheckContext context, CancellationToken cancellationToken = default) => _check(cancellationToken); + } +} diff --git a/src/HealthChecks/HealthChecks/src/DependencyInjection/HealthCheckServiceCollectionExtensions.cs b/src/HealthChecks/HealthChecks/src/DependencyInjection/HealthCheckServiceCollectionExtensions.cs new file mode 100644 index 0000000000..d6df03d2ae --- /dev/null +++ b/src/HealthChecks/HealthChecks/src/DependencyInjection/HealthCheckServiceCollectionExtensions.cs @@ -0,0 +1,33 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using Microsoft.Extensions.DependencyInjection.Extensions; +using Microsoft.Extensions.Diagnostics.HealthChecks; +using Microsoft.Extensions.Hosting; + +namespace Microsoft.Extensions.DependencyInjection +{ + /// + /// Provides extension methods for registering in an . + /// + public static class HealthCheckServiceCollectionExtensions + { + /// + /// Adds the to the container, using the provided delegate to register + /// health checks. + /// + /// + /// This operation is idempotent - multiple invocations will still only result in a single + /// instance in the . It can be invoked + /// multiple times in order to get access to the in multiple places. + /// + /// The to add the to. + /// An instance of from which health checks can be registered. + public static IHealthChecksBuilder AddHealthChecks(this IServiceCollection services) + { + services.TryAddSingleton(); + services.TryAddSingleton(); + return new HealthChecksBuilder(services); + } + } +} diff --git a/src/HealthChecks/HealthChecks/src/DependencyInjection/HealthChecksBuilder.cs b/src/HealthChecks/HealthChecks/src/DependencyInjection/HealthChecksBuilder.cs new file mode 100644 index 0000000000..231dd51717 --- /dev/null +++ b/src/HealthChecks/HealthChecks/src/DependencyInjection/HealthChecksBuilder.cs @@ -0,0 +1,33 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; +using Microsoft.Extensions.Diagnostics.HealthChecks; + +namespace Microsoft.Extensions.DependencyInjection +{ + internal class HealthChecksBuilder : IHealthChecksBuilder + { + public HealthChecksBuilder(IServiceCollection services) + { + Services = services; + } + + public IServiceCollection Services { get; } + + public IHealthChecksBuilder Add(HealthCheckRegistration registration) + { + if (registration == null) + { + throw new ArgumentNullException(nameof(registration)); + } + + Services.Configure(options => + { + options.Registrations.Add(registration); + }); + + return this; + } + } +} diff --git a/src/HealthChecks/HealthChecks/src/DependencyInjection/HealthChecksBuilderAddCheckExtensions.cs b/src/HealthChecks/HealthChecks/src/DependencyInjection/HealthChecksBuilderAddCheckExtensions.cs new file mode 100644 index 0000000000..9508889054 --- /dev/null +++ b/src/HealthChecks/HealthChecks/src/DependencyInjection/HealthChecksBuilderAddCheckExtensions.cs @@ -0,0 +1,191 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; +using System.Collections.Generic; +using Microsoft.Extensions.Diagnostics.HealthChecks; + +namespace Microsoft.Extensions.DependencyInjection +{ + /// + /// Provides basic extension methods for registering instances in an . + /// + public static class HealthChecksBuilderAddCheckExtensions + { + /// + /// Adds a new health check with the specified name and implementation. + /// + /// The . + /// The name of the health check. + /// An instance. + /// + /// The that should be reported when the health check reports a failure. If the provided value + /// is null, then will be reported. + /// + /// A list of tags that can be used to filter health checks. + /// The . + public static IHealthChecksBuilder AddCheck( + this IHealthChecksBuilder builder, + string name, + IHealthCheck instance, + HealthStatus? failureStatus = null, + IEnumerable tags = null) + { + if (builder == null) + { + throw new ArgumentNullException(nameof(builder)); + } + + if (name == null) + { + throw new ArgumentNullException(nameof(name)); + } + + if (instance == null) + { + throw new ArgumentNullException(nameof(instance)); + } + + return builder.Add(new HealthCheckRegistration(name, instance, failureStatus, tags)); + } + + /// + /// Adds a new health check with the specified name and implementation. + /// + /// The health check implementation type. + /// The . + /// The name of the health check. + /// + /// The that should be reported when the health check reports a failure. If the provided value + /// is null, then will be reported. + /// + /// A list of tags that can be used to filter health checks. + /// The . + /// + /// This method will use to create the health check + /// instance when needed. If a service of type is registred in the dependency injection container + /// with any liftime it will be used. Otherwise an instance of type will be constructed with + /// access to services from the dependency injection container. + /// + public static IHealthChecksBuilder AddCheck( + this IHealthChecksBuilder builder, + string name, + HealthStatus? failureStatus = null, + IEnumerable tags = null) where T : class, IHealthCheck + { + if (builder == null) + { + throw new ArgumentNullException(nameof(builder)); + } + + if (name == null) + { + throw new ArgumentNullException(nameof(name)); + } + + return builder.Add(new HealthCheckRegistration(name, s => ActivatorUtilities.GetServiceOrCreateInstance(s), failureStatus, tags)); + } + + // NOTE: AddTypeActivatedCheck has overloads rather than default parameters values, because default parameter values don't + // play super well with params. + + /// + /// Adds a new type activated health check with the specified name and implementation. + /// + /// The health check implementation type. + /// The . + /// The name of the health check. + /// Additional arguments to provide to the constructor. + /// The . + /// + /// This method will use to create the health check + /// instance when needed. Additional arguments can be provided to the constructor via . + /// + public static IHealthChecksBuilder AddTypeActivatedCheck(this IHealthChecksBuilder builder, string name, params object[] args) where T : class, IHealthCheck + { + if (builder == null) + { + throw new ArgumentNullException(nameof(builder)); + } + + if (name == null) + { + throw new ArgumentNullException(nameof(name)); + } + + return AddTypeActivatedCheck(builder, name, failureStatus: null, tags: null); + } + + /// + /// Adds a new type activated health check with the specified name and implementation. + /// + /// The health check implementation type. + /// The . + /// The name of the health check. + /// + /// The that should be reported when the health check reports a failure. If the provided value + /// is null, then will be reported. + /// + /// Additional arguments to provide to the constructor. + /// The . + /// + /// This method will use to create the health check + /// instance when needed. Additional arguments can be provided to the constructor via . + /// + public static IHealthChecksBuilder AddTypeActivatedCheck( + this IHealthChecksBuilder builder, + string name, + HealthStatus? failureStatus, + params object[] args) where T : class, IHealthCheck + { + if (builder == null) + { + throw new ArgumentNullException(nameof(builder)); + } + + if (name == null) + { + throw new ArgumentNullException(nameof(name)); + } + + return AddTypeActivatedCheck(builder, name, failureStatus, tags: null); + } + + /// + /// Adds a new type activated health check with the specified name and implementation. + /// + /// The health check implementation type. + /// The . + /// The name of the health check. + /// + /// The that should be reported when the health check reports a failure. If the provided value + /// is null, then will be reported. + /// + /// A list of tags that can be used to filter health checks. + /// Additional arguments to provide to the constructor. + /// The . + /// + /// This method will use to create the health check + /// instance when needed. Additional arguments can be provided to the constructor via . + /// + public static IHealthChecksBuilder AddTypeActivatedCheck( + this IHealthChecksBuilder builder, + string name, + HealthStatus? failureStatus, + IEnumerable tags, + params object[] args) where T : class, IHealthCheck + { + if (builder == null) + { + throw new ArgumentNullException(nameof(builder)); + } + + if (name == null) + { + throw new ArgumentNullException(nameof(name)); + } + + return builder.Add(new HealthCheckRegistration(name, s => ActivatorUtilities.CreateInstance(s, args), failureStatus, tags)); + } + } +} diff --git a/src/HealthChecks/HealthChecks/src/DependencyInjection/HealthChecksBuilderDelegateExtensions.cs b/src/HealthChecks/HealthChecks/src/DependencyInjection/HealthChecksBuilderDelegateExtensions.cs new file mode 100644 index 0000000000..d7dfdd90ae --- /dev/null +++ b/src/HealthChecks/HealthChecks/src/DependencyInjection/HealthChecksBuilderDelegateExtensions.cs @@ -0,0 +1,149 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; +using System.Collections.Generic; +using System.Threading; +using System.Threading.Tasks; +using Microsoft.Extensions.Diagnostics.HealthChecks; + +namespace Microsoft.Extensions.DependencyInjection +{ + /// + /// Provides extension methods for registering delegates with the . + /// + public static class HealthChecksBuilderDelegateExtensions + { + /// + /// Adds a new health check with the specified name and implementation. + /// + /// The . + /// The name of the health check. + /// A list of tags that can be used to filter health checks. + /// A delegate that provides the health check implementation. + /// The . + public static IHealthChecksBuilder AddCheck( + this IHealthChecksBuilder builder, + string name, + Func check, + IEnumerable tags = null) + { + if (builder == null) + { + throw new ArgumentNullException(nameof(builder)); + } + + if (name == null) + { + throw new ArgumentNullException(nameof(name)); + } + + if (check == null) + { + throw new ArgumentNullException(nameof(check)); + } + + var instance = new DelegateHealthCheck((ct) => Task.FromResult(check())); + return builder.Add(new HealthCheckRegistration(name, instance, failureStatus: null, tags)); + } + + /// + /// Adds a new health check with the specified name and implementation. + /// + /// The . + /// The name of the health check. + /// A list of tags that can be used to filter health checks. + /// A delegate that provides the health check implementation. + /// The . + public static IHealthChecksBuilder AddCheck( + this IHealthChecksBuilder builder, + string name, + Func check, + IEnumerable tags = null) + { + if (builder == null) + { + throw new ArgumentNullException(nameof(builder)); + } + + if (name == null) + { + throw new ArgumentNullException(nameof(name)); + } + + if (check == null) + { + throw new ArgumentNullException(nameof(check)); + } + + var instance = new DelegateHealthCheck((ct) => Task.FromResult(check(ct))); + return builder.Add(new HealthCheckRegistration(name, instance, failureStatus: null, tags)); + } + + /// + /// Adds a new health check with the specified name and implementation. + /// + /// The . + /// The name of the health check. + /// A list of tags that can be used to filter health checks. + /// A delegate that provides the health check implementation. + /// The . + public static IHealthChecksBuilder AddAsyncCheck( + this IHealthChecksBuilder builder, + string name, + Func> check, + IEnumerable tags = null) + { + if (builder == null) + { + throw new ArgumentNullException(nameof(builder)); + } + + if (name == null) + { + throw new ArgumentNullException(nameof(name)); + } + + if (check == null) + { + throw new ArgumentNullException(nameof(check)); + } + + var instance = new DelegateHealthCheck((ct) => check()); + return builder.Add(new HealthCheckRegistration(name, instance, failureStatus: null, tags)); + } + + /// + /// Adds a new health check with the specified name and implementation. + /// + /// The . + /// The name of the health check. + /// A list of tags that can be used to filter health checks. + /// A delegate that provides the health check implementation. + /// The . + public static IHealthChecksBuilder AddAsyncCheck( + this IHealthChecksBuilder builder, + string name, + Func> check, + IEnumerable tags = null) + { + if (builder == null) + { + throw new ArgumentNullException(nameof(builder)); + } + + if (name == null) + { + throw new ArgumentNullException(nameof(name)); + } + + if (check == null) + { + throw new ArgumentNullException(nameof(check)); + } + + var instance = new DelegateHealthCheck((ct) => check(ct)); + return builder.Add(new HealthCheckRegistration(name, instance, failureStatus: null, tags)); + } + } +} diff --git a/src/HealthChecks/HealthChecks/src/DependencyInjection/IHealthChecksBuilder.cs b/src/HealthChecks/HealthChecks/src/DependencyInjection/IHealthChecksBuilder.cs new file mode 100644 index 0000000000..eb78293f87 --- /dev/null +++ b/src/HealthChecks/HealthChecks/src/DependencyInjection/IHealthChecksBuilder.cs @@ -0,0 +1,24 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using Microsoft.Extensions.Diagnostics.HealthChecks; + +namespace Microsoft.Extensions.DependencyInjection +{ + /// + /// A builder used to register health checks. + /// + public interface IHealthChecksBuilder + { + /// + /// Adds a for a health check. + /// + /// The . + IHealthChecksBuilder Add(HealthCheckRegistration registration); + + /// + /// Gets the into which instances should be registered. + /// + IServiceCollection Services { get; } + } +} diff --git a/src/HealthChecks/HealthChecks/src/HealthCheckLogScope.cs b/src/HealthChecks/HealthChecks/src/HealthCheckLogScope.cs new file mode 100644 index 0000000000..c7ef3ff5bd --- /dev/null +++ b/src/HealthChecks/HealthChecks/src/HealthCheckLogScope.cs @@ -0,0 +1,48 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; +using System.Collections; +using System.Collections.Generic; + +namespace Microsoft.Extensions.Diagnostics.HealthChecks +{ + internal class HealthCheckLogScope : IReadOnlyList> + { + public string HealthCheckName { get; } + + int IReadOnlyCollection>.Count { get; } = 1; + + KeyValuePair IReadOnlyList>.this[int index] + { + get + { + if (index == 0) + { + return new KeyValuePair(nameof(HealthCheckName), HealthCheckName); + } + + throw new ArgumentOutOfRangeException(nameof(index)); + } + } + + /// + /// Creates a new instance of with the provided name. + /// + /// The name of the health check being executed. + public HealthCheckLogScope(string healthCheckName) + { + HealthCheckName = healthCheckName; + } + + IEnumerator> IEnumerable>.GetEnumerator() + { + yield return new KeyValuePair(nameof(HealthCheckName), HealthCheckName); + } + + IEnumerator IEnumerable.GetEnumerator() + { + return ((IEnumerable>)this).GetEnumerator(); + } + } +} diff --git a/src/HealthChecks/HealthChecks/src/HealthCheckPublisherHostedService.cs b/src/HealthChecks/HealthChecks/src/HealthCheckPublisherHostedService.cs new file mode 100644 index 0000000000..d124ffa2e3 --- /dev/null +++ b/src/HealthChecks/HealthChecks/src/HealthCheckPublisherHostedService.cs @@ -0,0 +1,262 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; +using System.Collections.Generic; +using System.Linq; +using System.Threading; +using System.Threading.Tasks; +using Microsoft.Extensions.Hosting; +using Microsoft.Extensions.Internal; +using Microsoft.Extensions.Logging; +using Microsoft.Extensions.Options; + +namespace Microsoft.Extensions.Diagnostics.HealthChecks +{ + internal sealed class HealthCheckPublisherHostedService : IHostedService + { + private readonly HealthCheckService _healthCheckService; + private readonly IOptions _options; + private readonly ILogger _logger; + private readonly IHealthCheckPublisher[] _publishers; + + private CancellationTokenSource _stopping; + private Timer _timer; + + public HealthCheckPublisherHostedService( + HealthCheckService healthCheckService, + IOptions options, + ILogger logger, + IEnumerable publishers) + { + if (healthCheckService == null) + { + throw new ArgumentNullException(nameof(healthCheckService)); + } + + if (options == null) + { + throw new ArgumentNullException(nameof(options)); + } + + if (logger == null) + { + throw new ArgumentNullException(nameof(logger)); + } + + if (publishers == null) + { + throw new ArgumentNullException(nameof(publishers)); + } + + _healthCheckService = healthCheckService; + _options = options; + _logger = logger; + _publishers = publishers.ToArray(); + + _stopping = new CancellationTokenSource(); + } + + internal bool IsStopping => _stopping.IsCancellationRequested; + + internal bool IsTimerRunning => _timer != null; + + public Task StartAsync(CancellationToken cancellationToken = default) + { + if (_publishers.Length == 0) + { + return Task.CompletedTask; + } + + // IMPORTANT - make sure this is the last thing that happens in this method. The timer can + // fire before other code runs. + _timer = NonCapturingTimer.Create(Timer_Tick, null, dueTime: _options.Value.Delay, period: _options.Value.Period); + + return Task.CompletedTask; + } + + public Task StopAsync(CancellationToken cancellationToken = default) + { + try + { + _stopping.Cancel(); + } + catch + { + // Ignore exceptions thrown as a result of a cancellation. + } + + if (_publishers.Length == 0) + { + return Task.CompletedTask; + } + + _timer?.Dispose(); + _timer = null; + + + return Task.CompletedTask; + } + + // Yes, async void. We need to be async. We need to be void. We handle the exceptions in RunAsync + private async void Timer_Tick(object state) + { + await RunAsync(); + } + + // Internal for testing + internal async Task RunAsync() + { + var duration = ValueStopwatch.StartNew(); + Logger.HealthCheckPublisherProcessingBegin(_logger); + + CancellationTokenSource cancellation = null; + try + { + var timeout = _options.Value.Timeout; + + cancellation = CancellationTokenSource.CreateLinkedTokenSource(_stopping.Token); + cancellation.CancelAfter(timeout); + + await RunAsyncCore(cancellation.Token); + + Logger.HealthCheckPublisherProcessingEnd(_logger, duration.GetElapsedTime()); + } + catch (OperationCanceledException) when (IsStopping) + { + // This is a cancellation - if the app is shutting down we want to ignore it. Otherwise, it's + // a timeout and we want to log it. + } + catch (Exception ex) + { + // This is an error, publishing failed. + Logger.HealthCheckPublisherProcessingEnd(_logger, duration.GetElapsedTime(), ex); + } + finally + { + cancellation.Dispose(); + } + } + + private async Task RunAsyncCore(CancellationToken cancellationToken) + { + // Forcibly yield - we want to unblock the timer thread. + await Task.Yield(); + + // The health checks service does it's own logging, and doesn't throw exceptions. + var report = await _healthCheckService.CheckHealthAsync(_options.Value.Predicate, cancellationToken); + + var publishers = _publishers; + var tasks = new Task[publishers.Length]; + for (var i = 0; i < publishers.Length; i++) + { + tasks[i] = RunPublisherAsync(publishers[i], report, cancellationToken); + } + + await Task.WhenAll(tasks); + } + + private async Task RunPublisherAsync(IHealthCheckPublisher publisher, HealthReport report, CancellationToken cancellationToken) + { + var duration = ValueStopwatch.StartNew(); + + try + { + Logger.HealthCheckPublisherBegin(_logger, publisher); + + await publisher.PublishAsync(report, cancellationToken); + Logger.HealthCheckPublisherEnd(_logger, publisher, duration.GetElapsedTime()); + } + catch (OperationCanceledException) when (IsStopping) + { + // This is a cancellation - if the app is shutting down we want to ignore it. Otherwise, it's + // a timeout and we want to log it. + } + catch (OperationCanceledException ocex) + { + Logger.HealthCheckPublisherTimeout(_logger, publisher, duration.GetElapsedTime()); + throw ocex; + } + catch (Exception ex) + { + Logger.HealthCheckPublisherError(_logger, publisher, duration.GetElapsedTime(), ex); + throw ex; + } + } + + internal static class EventIds + { + public static readonly EventId HealthCheckPublisherProcessingBegin = new EventId(100, "HealthCheckPublisherProcessingBegin"); + public static readonly EventId HealthCheckPublisherProcessingEnd = new EventId(101, "HealthCheckPublisherProcessingEnd"); + public static readonly EventId HealthCheckPublisherProcessingError = new EventId(101, "HealthCheckPublisherProcessingError"); + + public static readonly EventId HealthCheckPublisherBegin = new EventId(102, "HealthCheckPublisherBegin"); + public static readonly EventId HealthCheckPublisherEnd = new EventId(103, "HealthCheckPublisherEnd"); + public static readonly EventId HealthCheckPublisherError = new EventId(104, "HealthCheckPublisherError"); + public static readonly EventId HealthCheckPublisherTimeout = new EventId(104, "HealthCheckPublisherTimeout"); + } + + private static class Logger + { + private static readonly Action _healthCheckPublisherProcessingBegin = LoggerMessage.Define( + LogLevel.Debug, + EventIds.HealthCheckPublisherProcessingBegin, + "Running health check publishers"); + + private static readonly Action _healthCheckPublisherProcessingEnd = LoggerMessage.Define( + LogLevel.Debug, + EventIds.HealthCheckPublisherProcessingEnd, + "Health check publisher processing completed after {ElapsedMilliseconds}ms"); + + private static readonly Action _healthCheckPublisherBegin = LoggerMessage.Define( + LogLevel.Debug, + EventIds.HealthCheckPublisherBegin, + "Running health check publisher '{HealthCheckPublisher}'"); + + private static readonly Action _healthCheckPublisherEnd = LoggerMessage.Define( + LogLevel.Debug, + EventIds.HealthCheckPublisherEnd, + "Health check '{HealthCheckPublisher}' completed after {ElapsedMilliseconds}ms"); + + private static readonly Action _healthCheckPublisherError = LoggerMessage.Define( + LogLevel.Error, + EventIds.HealthCheckPublisherError, + "Health check {HealthCheckPublisher} threw an unhandled exception after {ElapsedMilliseconds}ms"); + + private static readonly Action _healthCheckPublisherTimeout = LoggerMessage.Define( + LogLevel.Error, + EventIds.HealthCheckPublisherTimeout, + "Health check {HealthCheckPublisher} was canceled after {ElapsedMilliseconds}ms"); + + public static void HealthCheckPublisherProcessingBegin(ILogger logger) + { + _healthCheckPublisherProcessingBegin(logger, null); + } + + public static void HealthCheckPublisherProcessingEnd(ILogger logger, TimeSpan duration, Exception exception = null) + { + _healthCheckPublisherProcessingEnd(logger, duration.TotalMilliseconds, exception); + } + + public static void HealthCheckPublisherBegin(ILogger logger, IHealthCheckPublisher publisher) + { + _healthCheckPublisherBegin(logger, publisher, null); + } + + public static void HealthCheckPublisherEnd(ILogger logger, IHealthCheckPublisher publisher, TimeSpan duration) + { + _healthCheckPublisherEnd(logger, publisher, duration.TotalMilliseconds, null); + } + + public static void HealthCheckPublisherError(ILogger logger, IHealthCheckPublisher publisher, TimeSpan duration, Exception exception) + { + _healthCheckPublisherError(logger, publisher, duration.TotalMilliseconds, exception); + } + + public static void HealthCheckPublisherTimeout(ILogger logger, IHealthCheckPublisher publisher, TimeSpan duration) + { + _healthCheckPublisherTimeout(logger, publisher, duration.TotalMilliseconds, null); + } + } + } +} diff --git a/src/HealthChecks/HealthChecks/src/HealthCheckPublisherOptions.cs b/src/HealthChecks/HealthChecks/src/HealthCheckPublisherOptions.cs new file mode 100644 index 0000000000..1313718af8 --- /dev/null +++ b/src/HealthChecks/HealthChecks/src/HealthCheckPublisherOptions.cs @@ -0,0 +1,84 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; + +namespace Microsoft.Extensions.Diagnostics.HealthChecks +{ + /// + /// Options for the default service that executes instances. + /// + public sealed class HealthCheckPublisherOptions + { + private TimeSpan _delay; + private TimeSpan _period; + + public HealthCheckPublisherOptions() + { + _delay = TimeSpan.FromSeconds(5); + _period = TimeSpan.FromSeconds(30); + } + + /// + /// Gets or sets the initial delay applied after the application starts before executing + /// instances. The delay is applied once at startup, and does + /// not apply to subsequent iterations. The default value is 5 seconds. + /// + public TimeSpan Delay + { + get => _delay; + set + { + if (value == System.Threading.Timeout.InfiniteTimeSpan) + { + throw new ArgumentException($"The {nameof(Delay)} must not be infinite.", nameof(value)); + } + + _delay = value; + } + } + + /// + /// Gets or sets the period of execution. The default value is + /// 30 seconds. + /// + /// + /// The cannot be set to a value lower than 1 second. + /// + public TimeSpan Period + { + get => _period; + set + { + if (value < TimeSpan.FromSeconds(1)) + { + throw new ArgumentException($"The {nameof(Period)} must be greater than or equal to one second.", nameof(value)); + } + + if (value == System.Threading.Timeout.InfiniteTimeSpan) + { + throw new ArgumentException($"The {nameof(Period)} must not be infinite.", nameof(value)); + } + + _delay = value; + } + } + + /// + /// Gets or sets a predicate that is used to filter the set of health checks executed. + /// + /// + /// If is null, the health check publisher service will run all + /// registered health checks - this is the default behavior. To run a subset of health checks, + /// provide a function that filters the set of checks. The predicate will be evaluated each period. + /// + public Func Predicate { get; set; } + + /// + /// Gets or sets the timeout for executing the health checks an all + /// instances. Use to execute with no timeout. + /// The default value is 30 seconds. + /// + public TimeSpan Timeout { get; set; } = TimeSpan.FromSeconds(30); + } +} diff --git a/src/HealthChecks/HealthChecks/src/HealthCheckService.cs b/src/HealthChecks/HealthChecks/src/HealthCheckService.cs new file mode 100644 index 0000000000..e4a128148d --- /dev/null +++ b/src/HealthChecks/HealthChecks/src/HealthCheckService.cs @@ -0,0 +1,61 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; +using System.Threading; +using System.Threading.Tasks; +using Microsoft.Extensions.DependencyInjection; + +namespace Microsoft.Extensions.Diagnostics.HealthChecks +{ + /// + /// A service which can be used to check the status of instances + /// registered in the application. + /// + /// + /// + /// The default implementation of is registered in the dependency + /// injection container as a singleton service by calling + /// . + /// + /// + /// The returned by + /// + /// provides a convenience API for registering health checks. + /// + /// + /// implementations can be registered through extension methods provided by + /// . + /// + /// + public abstract class HealthCheckService + { + /// + /// Runs all the health checks in the application and returns the aggregated status. + /// + /// A which can be used to cancel the health checks. + /// + /// A which will complete when all the health checks have been run, + /// yielding a containing the results. + /// + public Task CheckHealthAsync(CancellationToken cancellationToken = default) + { + return CheckHealthAsync(predicate: null, cancellationToken); + } + + /// + /// Runs the provided health checks and returns the aggregated status + /// + /// + /// A predicate that can be used to include health checks based on user-defined criteria. + /// + /// A which can be used to cancel the health checks. + /// + /// A which will complete when all the health checks have been run, + /// yielding a containing the results. + /// + public abstract Task CheckHealthAsync( + Func predicate, + CancellationToken cancellationToken = default); + } +} diff --git a/src/HealthChecks/HealthChecks/src/HealthCheckServiceOptions.cs b/src/HealthChecks/HealthChecks/src/HealthCheckServiceOptions.cs new file mode 100644 index 0000000000..b8dfdb9b40 --- /dev/null +++ b/src/HealthChecks/HealthChecks/src/HealthCheckServiceOptions.cs @@ -0,0 +1,18 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System.Collections.Generic; + +namespace Microsoft.Extensions.Diagnostics.HealthChecks +{ + /// + /// Options for the default implementation of + /// + public sealed class HealthCheckServiceOptions + { + /// + /// Gets the health check registrations. + /// + public ICollection Registrations { get; } = new List(); + } +} diff --git a/src/HealthChecks/HealthChecks/src/Microsoft.Extensions.Diagnostics.HealthChecks.csproj b/src/HealthChecks/HealthChecks/src/Microsoft.Extensions.Diagnostics.HealthChecks.csproj new file mode 100644 index 0000000000..d0b1c97ef0 --- /dev/null +++ b/src/HealthChecks/HealthChecks/src/Microsoft.Extensions.Diagnostics.HealthChecks.csproj @@ -0,0 +1,26 @@ + + + Components for performing health checks in .NET applications + +Commonly Used Types: +Microsoft.Extensions.Diagnostics.HealthChecks.HealthCheckService +Microsoft.Extensions.Diagnostics.HealthChecks.IHealthChecksBuilder + + netstandard2.0 + $(NoWarn);CS1591 + true + diagnostics;healthchecks + + + + + + + + + + + + + + diff --git a/src/HealthChecks/HealthChecks/src/Properties/AssemblyInfo.cs b/src/HealthChecks/HealthChecks/src/Properties/AssemblyInfo.cs new file mode 100644 index 0000000000..13e969bfad --- /dev/null +++ b/src/HealthChecks/HealthChecks/src/Properties/AssemblyInfo.cs @@ -0,0 +1,3 @@ +using System.Runtime.CompilerServices; + +[assembly: InternalsVisibleTo("Microsoft.Extensions.Diagnostics.HealthChecks.Tests, PublicKey=0024000004800000940000000602000000240000525341310004000001000100f33a29044fa9d740c9b3213a93e57c84b472c84e0b8a0e1ae48e67a9f8f6de9d5f7f3d52ac23e48ac51801f1dc950abe901da34d2a9e3baadb141a17c77ef3c565dd5ee5054b91cf63bb3c6ab83f72ab3aafe93d0fc3c2348b764fafb0b1c0733de51459aeab46580384bf9d74c4e28164b7cde247f891ba07891c9d872ad2bb")] \ No newline at end of file diff --git a/src/HealthChecks/HealthChecks/src/baseline.netcore.json b/src/HealthChecks/HealthChecks/src/baseline.netcore.json new file mode 100644 index 0000000000..cb2fe053f1 --- /dev/null +++ b/src/HealthChecks/HealthChecks/src/baseline.netcore.json @@ -0,0 +1,5 @@ +{ + "AssemblyIdentity": "Microsoft.Extensions.Diagnostics.HealthChecks, Version=2.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60", + "Types": [ + ] +} \ No newline at end of file diff --git a/src/HealthChecks/HealthChecks/test/DefaultHealthCheckServiceTest.cs b/src/HealthChecks/HealthChecks/test/DefaultHealthCheckServiceTest.cs new file mode 100644 index 0000000000..9ab991204e --- /dev/null +++ b/src/HealthChecks/HealthChecks/test/DefaultHealthCheckServiceTest.cs @@ -0,0 +1,419 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; +using System.Collections.Generic; +using System.Linq; +using System.Threading; +using System.Threading.Tasks; +using Microsoft.Extensions.DependencyInjection; +using Microsoft.Extensions.Logging; +using Microsoft.Extensions.Logging.Testing; +using Microsoft.Extensions.Options; +using Xunit; + +namespace Microsoft.Extensions.Diagnostics.HealthChecks +{ + public class DefaultHealthCheckServiceTest + { + [Fact] + public void Constructor_ThrowsUsefulExceptionForDuplicateNames() + { + // Arrange + // + // Doing this the old fashioned way so we can verify that the exception comes + // from the constructor. + var serviceCollection = new ServiceCollection(); + serviceCollection.AddLogging(); + serviceCollection.AddOptions(); + serviceCollection.AddHealthChecks() + .AddCheck("Foo", new DelegateHealthCheck(_ => Task.FromResult(HealthCheckResult.Healthy()))) + .AddCheck("Foo", new DelegateHealthCheck(_ => Task.FromResult(HealthCheckResult.Healthy()))) + .AddCheck("Bar", new DelegateHealthCheck(_ => Task.FromResult(HealthCheckResult.Healthy()))) + .AddCheck("Baz", new DelegateHealthCheck(_ => Task.FromResult(HealthCheckResult.Healthy()))) + .AddCheck("Baz", new DelegateHealthCheck(_ => Task.FromResult(HealthCheckResult.Healthy()))); + + var services = serviceCollection.BuildServiceProvider(); + + var scopeFactory = services.GetRequiredService(); + var options = services.GetRequiredService>(); + var logger = services.GetRequiredService>(); + + // Act + var exception = Assert.Throws(() => new DefaultHealthCheckService(scopeFactory, options, logger)); + + // Assert + Assert.StartsWith($"Duplicate health checks were registered with the name(s): Foo, Baz", exception.Message); + } + + [Fact] + public async Task CheckAsync_RunsAllChecksAndAggregatesResultsAsync() + { + const string DataKey = "Foo"; + const string DataValue = "Bar"; + const string DegradedMessage = "I'm not feeling so good"; + const string UnhealthyMessage = "Halp!"; + const string HealthyMessage = "Everything is A-OK"; + var exception = new Exception("Things are pretty bad!"); + + // Arrange + var data = new Dictionary() + { + { DataKey, DataValue } + }; + + var service = CreateHealthChecksService(b => + { + b.AddAsyncCheck("HealthyCheck", _ => Task.FromResult(HealthCheckResult.Healthy(HealthyMessage, data))); + b.AddAsyncCheck("DegradedCheck", _ => Task.FromResult(HealthCheckResult.Degraded(DegradedMessage))); + b.AddAsyncCheck("UnhealthyCheck", _ => Task.FromResult(HealthCheckResult.Unhealthy(UnhealthyMessage, exception))); + }); + + // Act + var results = await service.CheckHealthAsync(); + + // Assert + Assert.Collection( + results.Entries.OrderBy(kvp => kvp.Key), + actual => + { + Assert.Equal("DegradedCheck", actual.Key); + Assert.Equal(DegradedMessage, actual.Value.Description); + Assert.Equal(HealthStatus.Degraded, actual.Value.Status); + Assert.Null(actual.Value.Exception); + Assert.Empty(actual.Value.Data); + }, + actual => + { + Assert.Equal("HealthyCheck", actual.Key); + Assert.Equal(HealthyMessage, actual.Value.Description); + Assert.Equal(HealthStatus.Healthy, actual.Value.Status); + Assert.Null(actual.Value.Exception); + Assert.Collection(actual.Value.Data, item => + { + Assert.Equal(DataKey, item.Key); + Assert.Equal(DataValue, item.Value); + }); + }, + actual => + { + Assert.Equal("UnhealthyCheck", actual.Key); + Assert.Equal(UnhealthyMessage, actual.Value.Description); + Assert.Equal(HealthStatus.Unhealthy, actual.Value.Status); + Assert.Same(exception, actual.Value.Exception); + Assert.Empty(actual.Value.Data); + }); + } + + [Fact] + public async Task CheckAsync_RunsFilteredChecksAndAggregatesResultsAsync() + { + const string DataKey = "Foo"; + const string DataValue = "Bar"; + const string DegradedMessage = "I'm not feeling so good"; + const string UnhealthyMessage = "Halp!"; + const string HealthyMessage = "Everything is A-OK"; + var exception = new Exception("Things are pretty bad!"); + + // Arrange + var data = new Dictionary + { + { DataKey, DataValue } + }; + + var service = CreateHealthChecksService(b => + { + b.AddAsyncCheck("HealthyCheck", _ => Task.FromResult(HealthCheckResult.Healthy(HealthyMessage, data))); + b.AddAsyncCheck("DegradedCheck", _ => Task.FromResult(HealthCheckResult.Degraded(DegradedMessage))); + b.AddAsyncCheck("UnhealthyCheck", _ => Task.FromResult(HealthCheckResult.Unhealthy(UnhealthyMessage, exception))); + }); + + // Act + var results = await service.CheckHealthAsync(c => c.Name == "HealthyCheck"); + + // Assert + Assert.Collection(results.Entries, + actual => + { + Assert.Equal("HealthyCheck", actual.Key); + Assert.Equal(HealthyMessage, actual.Value.Description); + Assert.Equal(HealthStatus.Healthy, actual.Value.Status); + Assert.Null(actual.Value.Exception); + Assert.Collection(actual.Value.Data, item => + { + Assert.Equal(DataKey, item.Key); + Assert.Equal(DataValue, item.Value); + }); + }); + } + + [Fact] + public async Task CheckHealthAsync_SetsRegistrationForEachCheck() + { + // Arrange + var thrownException = new InvalidOperationException("Whoops!"); + var faultedException = new InvalidOperationException("Ohnoes!"); + + var service = CreateHealthChecksService(b => + { + b.AddCheck("A"); + b.AddCheck("B"); + b.AddCheck("C"); + }); + + // Act + var results = await service.CheckHealthAsync(); + + // Assert + Assert.Collection( + results.Entries, + actual => + { + Assert.Equal("A", actual.Key); + Assert.Collection( + actual.Value.Data, + kvp => Assert.Equal(kvp, new KeyValuePair("name", "A"))); + }, + actual => + { + Assert.Equal("B", actual.Key); + Assert.Collection( + actual.Value.Data, + kvp => Assert.Equal(kvp, new KeyValuePair("name", "B"))); + }, + actual => + { + Assert.Equal("C", actual.Key); + Assert.Collection( + actual.Value.Data, + kvp => Assert.Equal(kvp, new KeyValuePair("name", "C"))); + }); + } + + [Fact] + public async Task CheckHealthAsync_Cancellation_CanPropagate() + { + // Arrange + var insideCheck = new TaskCompletionSource(); + + var service = CreateHealthChecksService(b => + { + b.AddAsyncCheck("cancels", async ct => + { + insideCheck.SetResult(null); + + await Task.Delay(10000, ct); + return HealthCheckResult.Unhealthy(); + }); + }); + + var cancel = new CancellationTokenSource(); + var task = service.CheckHealthAsync(cancel.Token); + + // After this returns we know the check has started + await insideCheck.Task; + + cancel.Cancel(); + + // Act & Assert + await Assert.ThrowsAsync(async () => await task); + } + + [Fact] + public async Task CheckHealthAsync_ConvertsExceptionInHealthCheckToUnhealthyResultAsync() + { + // Arrange + var thrownException = new InvalidOperationException("Whoops!"); + var faultedException = new InvalidOperationException("Ohnoes!"); + + var service = CreateHealthChecksService(b => + { + b.AddAsyncCheck("Throws", ct => throw thrownException); + b.AddAsyncCheck("Faults", ct => Task.FromException(faultedException)); + b.AddAsyncCheck("Succeeds", ct => Task.FromResult(HealthCheckResult.Healthy())); + }); + + // Act + var results = await service.CheckHealthAsync(); + + // Assert + Assert.Collection( + results.Entries, + actual => + { + Assert.Equal("Throws", actual.Key); + Assert.Equal(thrownException.Message, actual.Value.Description); + Assert.Equal(HealthStatus.Unhealthy, actual.Value.Status); + Assert.Same(thrownException, actual.Value.Exception); + }, + actual => + { + Assert.Equal("Faults", actual.Key); + Assert.Equal(faultedException.Message, actual.Value.Description); + Assert.Equal(HealthStatus.Unhealthy, actual.Value.Status); + Assert.Same(faultedException, actual.Value.Exception); + }, + actual => + { + Assert.Equal("Succeeds", actual.Key); + Assert.Null(actual.Value.Description); + Assert.Equal(HealthStatus.Healthy, actual.Value.Status); + Assert.Null(actual.Value.Exception); + }); + } + + [Fact] + public async Task CheckHealthAsync_SetsUpALoggerScopeForEachCheck() + { + // Arrange + var sink = new TestSink(); + var check = new DelegateHealthCheck(cancellationToken => + { + Assert.Collection(sink.Scopes, + actual => + { + Assert.Equal(actual.LoggerName, typeof(DefaultHealthCheckService).FullName); + Assert.Collection((IEnumerable>)actual.Scope, + item => + { + Assert.Equal("HealthCheckName", item.Key); + Assert.Equal("TestScope", item.Value); + }); + }); + return Task.FromResult(HealthCheckResult.Healthy()); + }); + + var loggerFactory = new TestLoggerFactory(sink, enabled: true); + var service = CreateHealthChecksService(b => + { + // Override the logger factory for testing + b.Services.AddSingleton(loggerFactory); + + b.AddCheck("TestScope", check); + }); + + // Act + var results = await service.CheckHealthAsync(); + + // Assert + Assert.Collection(results.Entries, actual => + { + Assert.Equal("TestScope", actual.Key); + Assert.Equal(HealthStatus.Healthy, actual.Value.Status); + }); + } + + [Fact] + public async Task CheckHealthAsync_CheckCanDependOnTransientService() + { + // Arrange + var service = CreateHealthChecksService(b => + { + b.Services.AddTransient(); + + b.AddCheck("Test"); + }); + + // Act + var results = await service.CheckHealthAsync(); + + // Assert + Assert.Collection( + results.Entries, + actual => + { + Assert.Equal("Test", actual.Key); + Assert.Equal(HealthStatus.Healthy, actual.Value.Status); + }); + } + + [Fact] + public async Task CheckHealthAsync_CheckCanDependOnScopedService() + { + // Arrange + var service = CreateHealthChecksService(b => + { + b.Services.AddScoped(); + + b.AddCheck("Test"); + }); + + // Act + var results = await service.CheckHealthAsync(); + + // Assert + Assert.Collection( + results.Entries, + actual => + { + Assert.Equal("Test", actual.Key); + Assert.Equal(HealthStatus.Healthy, actual.Value.Status); + }); + } + + [Fact] + public async Task CheckHealthAsync_CheckCanDependOnSingletonService() + { + // Arrange + var service = CreateHealthChecksService(b => + { + b.Services.AddSingleton(); + + b.AddCheck("Test"); + }); + + // Act + var results = await service.CheckHealthAsync(); + + // Assert + Assert.Collection( + results.Entries, + actual => + { + Assert.Equal("Test", actual.Key); + Assert.Equal(HealthStatus.Healthy, actual.Value.Status); + }); + } + + private static DefaultHealthCheckService CreateHealthChecksService(Action configure) + { + var services = new ServiceCollection(); + services.AddLogging(); + services.AddOptions(); + + var builder = services.AddHealthChecks(); + if (configure != null) + { + configure(builder); + } + + return (DefaultHealthCheckService)services.BuildServiceProvider(validateScopes: true).GetRequiredService(); + } + + private class AnotherService { } + + private class CheckWithServiceDependency : IHealthCheck + { + public CheckWithServiceDependency(AnotherService _) + { + } + + public Task CheckHealthAsync(HealthCheckContext context, CancellationToken cancellationToken = default) + { + return Task.FromResult(HealthCheckResult.Healthy()); + } + } + + private class NameCapturingCheck : IHealthCheck + { + public Task CheckHealthAsync(HealthCheckContext context, CancellationToken cancellationToken = default) + { + var data = new Dictionary() + { + { "name", context.Registration.Name }, + }; + return Task.FromResult(HealthCheckResult.Healthy(data: data)); + } + } + } +} diff --git a/src/HealthChecks/HealthChecks/test/DependencyInjection/HealthChecksBuilderTest.cs b/src/HealthChecks/HealthChecks/test/DependencyInjection/HealthChecksBuilderTest.cs new file mode 100644 index 0000000000..4235f152a2 --- /dev/null +++ b/src/HealthChecks/HealthChecks/test/DependencyInjection/HealthChecksBuilderTest.cs @@ -0,0 +1,257 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System.Threading; +using System.Threading.Tasks; +using Microsoft.Extensions.Diagnostics.HealthChecks; +using Microsoft.Extensions.Options; +using Xunit; + +namespace Microsoft.Extensions.DependencyInjection +{ + // Integration tests for extension methods on IHealthCheckBuilder + // + // We test the longest overload of each 'family' of Add...Check methods, since they chain to each other. + public class HealthChecksBuilderTest + { + [Fact] + public void AddCheck_Instance() + { + // Arrange + var instance = new DelegateHealthCheck((_) => + { + return Task.FromResult(HealthCheckResult.Healthy()); + }); + + var services = CreateServices(); + services.AddHealthChecks().AddCheck("test", failureStatus: HealthStatus.Degraded,tags: new[] { "tag", }, instance: instance); + + var serviceProvider = services.BuildServiceProvider(); + + // Act + var options = serviceProvider.GetRequiredService>().Value; + + // Assert + var registration = Assert.Single(options.Registrations); + Assert.Equal("test", registration.Name); + Assert.Equal(HealthStatus.Degraded, registration.FailureStatus); + Assert.Equal(new[] { "tag", }, registration.Tags); + Assert.Same(instance, registration.Factory(serviceProvider)); + } + + [Fact] + public void AddCheck_T_TypeActivated() + { + // Arrange + var services = CreateServices(); + services.AddHealthChecks().AddCheck("test", failureStatus: HealthStatus.Degraded, tags: new[] { "tag", }); + + var serviceProvider = services.BuildServiceProvider(); + + // Act + var options = serviceProvider.GetRequiredService>().Value; + + // Assert + var registration = Assert.Single(options.Registrations); + Assert.Equal("test", registration.Name); + Assert.Equal(HealthStatus.Degraded, registration.FailureStatus); + Assert.Equal(new[] { "tag", }, registration.Tags); + Assert.IsType(registration.Factory(serviceProvider)); + } + + [Fact] + public void AddCheck_T_Service() + { + // Arrange + var instance = new TestHealthCheck(); + + var services = CreateServices(); + services.AddSingleton(instance); + services.AddHealthChecks().AddCheck("test", failureStatus: HealthStatus.Degraded, tags: new[] { "tag", }); + + var serviceProvider = services.BuildServiceProvider(); + + // Act + var options = serviceProvider.GetRequiredService>().Value; + + // Assert + var registration = Assert.Single(options.Registrations); + Assert.Equal("test", registration.Name); + Assert.Equal(HealthStatus.Degraded, registration.FailureStatus); + Assert.Equal(new[] { "tag", }, registration.Tags); + Assert.Same(instance, registration.Factory(serviceProvider)); + } + + [Fact] + public void AddTypeActivatedCheck() + { + // Arrange + var services = CreateServices(); + services + .AddHealthChecks() + .AddTypeActivatedCheck("test", failureStatus: HealthStatus.Degraded, tags: new[] { "tag", }, args: new object[] { 5, "hi", }); + + var serviceProvider = services.BuildServiceProvider(); + + // Act + var options = serviceProvider.GetRequiredService>().Value; + + // Assert + var registration = Assert.Single(options.Registrations); + Assert.Equal("test", registration.Name); + Assert.Equal(HealthStatus.Degraded, registration.FailureStatus); + Assert.Equal(new[] { "tag", }, registration.Tags); + + var check = Assert.IsType(registration.Factory(serviceProvider)); + Assert.Equal(5, check.I); + Assert.Equal("hi", check.S); + } + + [Fact] + public void AddDelegateCheck_NoArg() + { + // Arrange + var services = CreateServices(); + services.AddHealthChecks().AddCheck("test", tags: new[] { "tag", }, check: () => + { + return HealthCheckResult.Healthy(); + }); + + var serviceProvider = services.BuildServiceProvider(); + + // Act + var options = serviceProvider.GetRequiredService>().Value; + + // Assert + var registration = Assert.Single(options.Registrations); + Assert.Equal("test", registration.Name); + Assert.Equal(HealthStatus.Unhealthy, registration.FailureStatus); + Assert.Equal(new[] { "tag", }, registration.Tags); + Assert.IsType(registration.Factory(serviceProvider)); + } + + [Fact] + public void AddDelegateCheck_CancellationToken() + { + // Arrange + var services = CreateServices(); + services.AddHealthChecks().AddCheck("test", (_) => + { + return HealthCheckResult.Degraded(); + }, tags: new[] { "tag", }); + + var serviceProvider = services.BuildServiceProvider(); + + // Act + var options = serviceProvider.GetRequiredService>().Value; + + // Assert + var registration = Assert.Single(options.Registrations); + Assert.Equal("test", registration.Name); + Assert.Equal(HealthStatus.Unhealthy, registration.FailureStatus); + Assert.Equal(new[] { "tag", }, registration.Tags); + Assert.IsType(registration.Factory(serviceProvider)); + } + + [Fact] + public void AddAsyncDelegateCheck_NoArg() + { + // Arrange + var services = CreateServices(); + services.AddHealthChecks().AddAsyncCheck("test", () => + { + return Task.FromResult(HealthCheckResult.Healthy()); + }, tags: new[] { "tag", }); + + var serviceProvider = services.BuildServiceProvider(); + + // Act + var options = serviceProvider.GetRequiredService>().Value; + + // Assert + var registration = Assert.Single(options.Registrations); + Assert.Equal("test", registration.Name); + Assert.Equal(HealthStatus.Unhealthy, registration.FailureStatus); + Assert.Equal(new[] { "tag", }, registration.Tags); + Assert.IsType(registration.Factory(serviceProvider)); + } + + [Fact] + public void AddAsyncDelegateCheck_CancellationToken() + { + // Arrange + var services = CreateServices(); + services.AddHealthChecks().AddAsyncCheck("test", (_) => + { + return Task.FromResult(HealthCheckResult.Unhealthy()); + }, tags: new[] { "tag", }); + + var serviceProvider = services.BuildServiceProvider(); + + // Act + var options = serviceProvider.GetRequiredService>().Value; + + // Assert + var registration = Assert.Single(options.Registrations); + Assert.Equal("test", registration.Name); + Assert.Equal(HealthStatus.Unhealthy, registration.FailureStatus); + Assert.Equal(new[] { "tag", }, registration.Tags); + Assert.IsType(registration.Factory(serviceProvider)); + } + + [Fact] + public void ChecksCanBeRegisteredInMultipleCallsToAddHealthChecks() + { + var services = new ServiceCollection(); + services + .AddHealthChecks() + .AddAsyncCheck("Foo", () => Task.FromResult(HealthCheckResult.Healthy())); + services + .AddHealthChecks() + .AddAsyncCheck("Bar", () => Task.FromResult(HealthCheckResult.Healthy())); + + // Act + var options = services.BuildServiceProvider().GetRequiredService>(); + + // Assert + Assert.Collection( + options.Value.Registrations, + actual => Assert.Equal("Foo", actual.Name), + actual => Assert.Equal("Bar", actual.Name)); + } + + private IServiceCollection CreateServices() + { + var services = new ServiceCollection(); + services.AddLogging(); + services.AddOptions(); + return services; + } + + private class TestHealthCheck : IHealthCheck + { + public Task CheckHealthAsync(HealthCheckContext context, CancellationToken cancellationToken = default) + { + throw new System.NotImplementedException(); + } + } + + private class TestHealthCheckWithArgs : IHealthCheck + { + public TestHealthCheckWithArgs(int i, string s) + { + I = i; + S = s; + } + + public int I { get; set; } + + public string S { get; set; } + + public Task CheckHealthAsync(HealthCheckContext context, CancellationToken cancellationToken = default) + { + throw new System.NotImplementedException(); + } + } + } +} diff --git a/src/HealthChecks/HealthChecks/test/DependencyInjection/ServiceCollectionExtensionsTest.cs b/src/HealthChecks/HealthChecks/test/DependencyInjection/ServiceCollectionExtensionsTest.cs new file mode 100644 index 0000000000..694a97628d --- /dev/null +++ b/src/HealthChecks/HealthChecks/test/DependencyInjection/ServiceCollectionExtensionsTest.cs @@ -0,0 +1,43 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System.Linq; +using Microsoft.Extensions.Diagnostics.HealthChecks; +using Microsoft.Extensions.Hosting; +using Xunit; + +namespace Microsoft.Extensions.DependencyInjection +{ + public class ServiceCollectionExtensionsTest + { + [Fact] + public void AddHealthChecks_RegistersSingletonHealthCheckServiceIdempotently() + { + // Arrange + var services = new ServiceCollection(); + + // Act + services.AddHealthChecks(); + services.AddHealthChecks(); + + // Assert + Assert.Collection(services.OrderBy(s => s.ServiceType.FullName), + actual => + { + Assert.Equal(ServiceLifetime.Singleton, actual.Lifetime); + Assert.Equal(typeof(HealthCheckService), actual.ServiceType); + Assert.Equal(typeof(DefaultHealthCheckService), actual.ImplementationType); + Assert.Null(actual.ImplementationInstance); + Assert.Null(actual.ImplementationFactory); + }, + actual => + { + Assert.Equal(ServiceLifetime.Singleton, actual.Lifetime); + Assert.Equal(typeof(IHostedService), actual.ServiceType); + Assert.Equal(typeof(HealthCheckPublisherHostedService), actual.ImplementationType); + Assert.Null(actual.ImplementationInstance); + Assert.Null(actual.ImplementationFactory); + }); + } + } +} diff --git a/src/HealthChecks/HealthChecks/test/HealthCheckPublisherHostedServiceTest.cs b/src/HealthChecks/HealthChecks/test/HealthCheckPublisherHostedServiceTest.cs new file mode 100644 index 0000000000..94687efcb8 --- /dev/null +++ b/src/HealthChecks/HealthChecks/test/HealthCheckPublisherHostedServiceTest.cs @@ -0,0 +1,528 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; +using System.Collections.Generic; +using System.Linq; +using System.Threading; +using System.Threading.Tasks; +using Microsoft.AspNetCore.Testing; +using Microsoft.Extensions.DependencyInjection; +using Microsoft.Extensions.Hosting; +using Microsoft.Extensions.Logging; +using Microsoft.Extensions.Logging.Testing; +using Xunit; + +namespace Microsoft.Extensions.Diagnostics.HealthChecks +{ + public class HealthCheckPublisherHostedServiceTest + { + [Fact] + public async Task StartAsync_WithoutPublishers_DoesNotStartTimer() + { + // Arrange + var publishers = new IHealthCheckPublisher[] + { + }; + + var service = CreateService(publishers); + + try + { + // Act + await service.StartAsync(); + + // Assert + Assert.False(service.IsTimerRunning); + Assert.False(service.IsStopping); + } + finally + { + await service.StopAsync(); + Assert.False(service.IsTimerRunning); + Assert.True(service.IsStopping); + } + } + + [Fact] + public async Task StartAsync_WithPublishers_StartsTimer() + { + // Arrange + var publishers = new IHealthCheckPublisher[] + { + new TestPublisher(), + }; + + var service = CreateService(publishers); + + try + { + // Act + await service.StartAsync(); + + // Assert + Assert.True(service.IsTimerRunning); + Assert.False(service.IsStopping); + } + finally + { + await service.StopAsync(); + Assert.False(service.IsTimerRunning); + Assert.True(service.IsStopping); + } + } + + [Fact] + public async Task StartAsync_WithPublishers_StartsTimer_RunsPublishers() + { + // Arrange + var unblock0 = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously); + var unblock1 = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously); + var unblock2 = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously); + + var publishers = new TestPublisher[] + { + new TestPublisher() { Wait = unblock0.Task, }, + new TestPublisher() { Wait = unblock1.Task, }, + new TestPublisher() { Wait = unblock2.Task, }, + }; + + var service = CreateService(publishers, configure: (options) => + { + options.Delay = TimeSpan.FromMilliseconds(0); + }); + + try + { + // Act + await service.StartAsync(); + + await publishers[0].Started.TimeoutAfter(TimeSpan.FromSeconds(10)); + await publishers[1].Started.TimeoutAfter(TimeSpan.FromSeconds(10)); + await publishers[2].Started.TimeoutAfter(TimeSpan.FromSeconds(10)); + + unblock0.SetResult(null); + unblock1.SetResult(null); + unblock2.SetResult(null); + + // Assert + Assert.True(service.IsTimerRunning); + Assert.False(service.IsStopping); + } + finally + { + await service.StopAsync(); + Assert.False(service.IsTimerRunning); + Assert.True(service.IsStopping); + } + } + + [Fact] + public async Task StopAsync_CancelsExecution() + { + // Arrange + var unblock = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously); + + var publishers = new TestPublisher[] + { + new TestPublisher() { Wait = unblock.Task, } + }; + + var service = CreateService(publishers); + + try + { + await service.StartAsync(); + + // Start execution + var running = service.RunAsync(); + + // Wait for the publisher to see the cancellation token + await publishers[0].Started.TimeoutAfter(TimeSpan.FromSeconds(10)); + Assert.Single(publishers[0].Entries); + + // Act + await service.StopAsync(); // Trigger cancellation + + // Assert + await AssertCancelledAsync(publishers[0].Entries[0].cancellationToken); + Assert.False(service.IsTimerRunning); + Assert.True(service.IsStopping); + + unblock.SetResult(null); + + await running.TimeoutAfter(TimeSpan.FromSeconds(10)); + } + finally + { + await service.StopAsync(); + Assert.False(service.IsTimerRunning); + Assert.True(service.IsStopping); + } + } + + [Fact] + public async Task RunAsync_WaitsForCompletion_Single() + { + // Arrange + var sink = new TestSink(); + + var unblock = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously); + + var publishers = new TestPublisher[] + { + new TestPublisher() { Wait = unblock.Task, }, + }; + + var service = CreateService(publishers, sink: sink); + + try + { + await service.StartAsync(); + + // Act + var running = service.RunAsync(); + + await publishers[0].Started.TimeoutAfter(TimeSpan.FromSeconds(10)); + + unblock.SetResult(null); + + await running.TimeoutAfter(TimeSpan.FromSeconds(10)); + + // Assert + Assert.True(service.IsTimerRunning); + Assert.False(service.IsStopping); + + for (var i = 0; i < publishers.Length; i++) + { + var report = Assert.Single(publishers[i].Entries).report; + Assert.Equal(new[] { "one", "two", }, report.Entries.Keys.OrderBy(k => k)); + } + } + finally + { + await service.StopAsync(); + Assert.False(service.IsTimerRunning); + Assert.True(service.IsStopping); + } + + Assert.Collection( + sink.Writes, + entry => { Assert.Equal(HealthCheckPublisherHostedService.EventIds.HealthCheckPublisherProcessingBegin, entry.EventId); }, + entry => { Assert.Equal(DefaultHealthCheckService.EventIds.HealthCheckProcessingBegin, entry.EventId); }, + entry => { Assert.Equal(DefaultHealthCheckService.EventIds.HealthCheckBegin, entry.EventId); }, + entry => { Assert.Equal(DefaultHealthCheckService.EventIds.HealthCheckEnd, entry.EventId); }, + entry => { Assert.Equal(DefaultHealthCheckService.EventIds.HealthCheckBegin, entry.EventId); }, + entry => { Assert.Equal(DefaultHealthCheckService.EventIds.HealthCheckEnd, entry.EventId); }, + entry => { Assert.Equal(DefaultHealthCheckService.EventIds.HealthCheckProcessingEnd, entry.EventId); }, + entry => { Assert.Equal(HealthCheckPublisherHostedService.EventIds.HealthCheckPublisherBegin, entry.EventId); }, + entry => { Assert.Equal(HealthCheckPublisherHostedService.EventIds.HealthCheckPublisherEnd, entry.EventId); }, + entry => { Assert.Equal(HealthCheckPublisherHostedService.EventIds.HealthCheckPublisherProcessingEnd, entry.EventId); }); + } + + // Not testing logs here to avoid differences in logging order + [Fact] + public async Task RunAsync_WaitsForCompletion_Multiple() + { + // Arrange + var unblock0 = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously); + var unblock1 = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously); + var unblock2 = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously); + + var publishers = new TestPublisher[] + { + new TestPublisher() { Wait = unblock0.Task, }, + new TestPublisher() { Wait = unblock1.Task, }, + new TestPublisher() { Wait = unblock2.Task, }, + }; + + var service = CreateService(publishers); + + try + { + await service.StartAsync(); + + // Act + var running = service.RunAsync(); + + await publishers[0].Started.TimeoutAfter(TimeSpan.FromSeconds(10)); + await publishers[1].Started.TimeoutAfter(TimeSpan.FromSeconds(10)); + await publishers[2].Started.TimeoutAfter(TimeSpan.FromSeconds(10)); + + unblock0.SetResult(null); + unblock1.SetResult(null); + unblock2.SetResult(null); + + await running.TimeoutAfter(TimeSpan.FromSeconds(10)); + + // Assert + Assert.True(service.IsTimerRunning); + Assert.False(service.IsStopping); + + for (var i = 0; i < publishers.Length; i++) + { + var report = Assert.Single(publishers[i].Entries).report; + Assert.Equal(new[] { "one", "two", }, report.Entries.Keys.OrderBy(k => k)); + } + } + finally + { + await service.StopAsync(); + Assert.False(service.IsTimerRunning); + Assert.True(service.IsStopping); + } + } + + [Fact] + public async Task RunAsync_PublishersCanTimeout() + { + // Arrange + var sink = new TestSink(); + var unblock = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously); + + var publishers = new TestPublisher[] + { + new TestPublisher() { Wait = unblock.Task, }, + }; + + var service = CreateService(publishers, sink: sink, configure: (options) => + { + options.Timeout = TimeSpan.FromMilliseconds(50); + }); + + try + { + await service.StartAsync(); + + // Act + var running = service.RunAsync(); + + await publishers[0].Started.TimeoutAfter(TimeSpan.FromSeconds(10)); + + await AssertCancelledAsync(publishers[0].Entries[0].cancellationToken); + + unblock.SetResult(null); + + await running.TimeoutAfter(TimeSpan.FromSeconds(10)); + + // Assert + Assert.True(service.IsTimerRunning); + Assert.False(service.IsStopping); + } + finally + { + await service.StopAsync(); + Assert.False(service.IsTimerRunning); + Assert.True(service.IsStopping); + } + + Assert.Collection( + sink.Writes, + entry => { Assert.Equal(HealthCheckPublisherHostedService.EventIds.HealthCheckPublisherProcessingBegin, entry.EventId); }, + entry => { Assert.Equal(DefaultHealthCheckService.EventIds.HealthCheckProcessingBegin, entry.EventId); }, + entry => { Assert.Equal(DefaultHealthCheckService.EventIds.HealthCheckBegin, entry.EventId); }, + entry => { Assert.Equal(DefaultHealthCheckService.EventIds.HealthCheckEnd, entry.EventId); }, + entry => { Assert.Equal(DefaultHealthCheckService.EventIds.HealthCheckBegin, entry.EventId); }, + entry => { Assert.Equal(DefaultHealthCheckService.EventIds.HealthCheckEnd, entry.EventId); }, + entry => { Assert.Equal(DefaultHealthCheckService.EventIds.HealthCheckProcessingEnd, entry.EventId); }, + entry => { Assert.Equal(HealthCheckPublisherHostedService.EventIds.HealthCheckPublisherBegin, entry.EventId); }, + entry => { Assert.Equal(HealthCheckPublisherHostedService.EventIds.HealthCheckPublisherTimeout, entry.EventId); }, + entry => { Assert.Equal(HealthCheckPublisherHostedService.EventIds.HealthCheckPublisherProcessingEnd, entry.EventId); }); + } + + [Fact] + public async Task RunAsync_CanFilterHealthChecks() + { + // Arrange + var publishers = new TestPublisher[] + { + new TestPublisher(), + new TestPublisher(), + }; + + var service = CreateService(publishers, configure: (options) => + { + options.Predicate = (r) => r.Name == "one"; + }); + + try + { + await service.StartAsync(); + + // Act + await service.RunAsync().TimeoutAfter(TimeSpan.FromSeconds(10)); + + // Assert + for (var i = 0; i < publishers.Length; i++) + { + var report = Assert.Single(publishers[i].Entries).report; + Assert.Equal(new[] { "one", }, report.Entries.Keys.OrderBy(k => k)); + } + } + finally + { + await service.StopAsync(); + Assert.False(service.IsTimerRunning); + Assert.True(service.IsStopping); + } + } + + [Fact] + public async Task RunAsync_HandlesExceptions() + { + // Arrange + var sink = new TestSink(); + var publishers = new TestPublisher[] + { + new TestPublisher() { Exception = new InvalidTimeZoneException(), }, + }; + + var service = CreateService(publishers, sink: sink); + + try + { + await service.StartAsync(); + + // Act + await service.RunAsync().TimeoutAfter(TimeSpan.FromSeconds(10)); + + } + finally + { + await service.StopAsync(); + Assert.False(service.IsTimerRunning); + Assert.True(service.IsStopping); + } + + Assert.Collection( + sink.Writes, + entry => { Assert.Equal(HealthCheckPublisherHostedService.EventIds.HealthCheckPublisherProcessingBegin, entry.EventId); }, + entry => { Assert.Equal(DefaultHealthCheckService.EventIds.HealthCheckProcessingBegin, entry.EventId); }, + entry => { Assert.Equal(DefaultHealthCheckService.EventIds.HealthCheckBegin, entry.EventId); }, + entry => { Assert.Equal(DefaultHealthCheckService.EventIds.HealthCheckEnd, entry.EventId); }, + entry => { Assert.Equal(DefaultHealthCheckService.EventIds.HealthCheckBegin, entry.EventId); }, + entry => { Assert.Equal(DefaultHealthCheckService.EventIds.HealthCheckEnd, entry.EventId); }, + entry => { Assert.Equal(DefaultHealthCheckService.EventIds.HealthCheckProcessingEnd, entry.EventId); }, + entry => { Assert.Equal(HealthCheckPublisherHostedService.EventIds.HealthCheckPublisherBegin, entry.EventId); }, + entry => { Assert.Equal(HealthCheckPublisherHostedService.EventIds.HealthCheckPublisherError, entry.EventId); }, + entry => { Assert.Equal(HealthCheckPublisherHostedService.EventIds.HealthCheckPublisherProcessingEnd, entry.EventId); }); + } + + // Not testing logging here to avoid flaky ordering issues + [Fact] + public async Task RunAsync_HandlesExceptions_Multiple() + { + // Arrange + var sink = new TestSink(); + var publishers = new TestPublisher[] + { + new TestPublisher() { Exception = new InvalidTimeZoneException(), }, + new TestPublisher(), + new TestPublisher() { Exception = new InvalidTimeZoneException(), }, + }; + + var service = CreateService(publishers, sink: sink); + + try + { + await service.StartAsync(); + + // Act + await service.RunAsync().TimeoutAfter(TimeSpan.FromSeconds(10)); + + } + finally + { + await service.StopAsync(); + Assert.False(service.IsTimerRunning); + Assert.True(service.IsStopping); + } + } + + private HealthCheckPublisherHostedService CreateService( + IHealthCheckPublisher[] publishers, + Action configure = null, + TestSink sink = null) + { + var serviceCollection = new ServiceCollection(); + serviceCollection.AddOptions(); + serviceCollection.AddLogging(); + serviceCollection.AddHealthChecks() + .AddCheck("one", () => { return HealthCheckResult.Healthy(); }) + .AddCheck("two", () => { return HealthCheckResult.Healthy(); }); + + // Choosing big values for tests to make sure that we're not dependent on the defaults. + // All of the tests that rely on the timer will set their own values for speed. + serviceCollection.Configure(options => + { + options.Delay = TimeSpan.FromMinutes(5); + options.Period = TimeSpan.FromMinutes(5); + options.Timeout = TimeSpan.FromMinutes(5); + }); + + if (publishers != null) + { + for (var i = 0; i < publishers.Length; i++) + { + serviceCollection.AddSingleton(publishers[i]); + } + } + + if (configure != null) + { + serviceCollection.Configure(configure); + } + + if (sink != null) + { + serviceCollection.AddSingleton(new TestLoggerFactory(sink, enabled: true)); + } + + var services = serviceCollection.BuildServiceProvider(); + return services.GetServices().OfType< HealthCheckPublisherHostedService>().Single(); + } + + private static async Task AssertCancelledAsync(CancellationToken cancellationToken) + { + await Assert.ThrowsAsync(() => Task.Delay(TimeSpan.FromSeconds(10), cancellationToken)); + } + + private class TestPublisher : IHealthCheckPublisher + { + private TaskCompletionSource _started; + + public TestPublisher() + { + _started = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously); + } + + public List<(HealthReport report, CancellationToken cancellationToken)> Entries { get; } = new List<(HealthReport report, CancellationToken cancellationToken)>(); + + public Exception Exception { get; set; } + + public Task Started => _started.Task; + + public Task Wait { get; set; } + + public async Task PublishAsync(HealthReport report, CancellationToken cancellationToken) + { + Entries.Add((report, cancellationToken)); + + // Signal that we've started + _started.SetResult(null); + + if (Wait != null) + { + await Wait; + } + + if (Exception != null) + { + throw Exception; + } + + cancellationToken.ThrowIfCancellationRequested(); + } + } + } +} diff --git a/src/HealthChecks/HealthChecks/test/HealthReportTest.cs b/src/HealthChecks/HealthChecks/test/HealthReportTest.cs new file mode 100644 index 0000000000..07f8e5a8e3 --- /dev/null +++ b/src/HealthChecks/HealthChecks/test/HealthReportTest.cs @@ -0,0 +1,45 @@ +// Copyright (c) .NET Foundation. All rights reserved. +// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information. + +using System; +using System.Collections.Generic; +using Xunit; + +namespace Microsoft.Extensions.Diagnostics.HealthChecks +{ + public class HealthReportTest + { + [Theory] + [InlineData(HealthStatus.Healthy)] + [InlineData(HealthStatus.Degraded)] + [InlineData(HealthStatus.Unhealthy)] + public void Status_MatchesWorstStatusInResults(HealthStatus status) + { + var result = new HealthReport(new Dictionary() + { + {"Foo", new HealthReportEntry(HealthStatus.Healthy, null,TimeSpan.MinValue, null, null) }, + {"Bar", new HealthReportEntry(HealthStatus.Healthy, null, TimeSpan.MinValue,null, null) }, + {"Baz", new HealthReportEntry(status, exception: null, description: null,duration:TimeSpan.MinValue, data: null) }, + {"Quick", new HealthReportEntry(HealthStatus.Healthy, null, TimeSpan.MinValue, null, null) }, + {"Quack", new HealthReportEntry(HealthStatus.Healthy, null, TimeSpan.MinValue, null, null) }, + {"Quock", new HealthReportEntry(HealthStatus.Healthy, null, TimeSpan.MinValue, null, null) }, + }, totalDuration: TimeSpan.MinValue); + + Assert.Equal(status, result.Status); + } + + [Theory] + [InlineData(200)] + [InlineData(300)] + [InlineData(400)] + public void TotalDuration_MatchesTotalDurationParameter(int milliseconds) + { + var result = new HealthReport(new Dictionary() + { + {"Foo", new HealthReportEntry(HealthStatus.Healthy, null,TimeSpan.MinValue, null, null) } + }, totalDuration: TimeSpan.FromMilliseconds(milliseconds)); + + Assert.Equal(TimeSpan.FromMilliseconds(milliseconds), result.TotalDuration); + } + } +} diff --git a/src/HealthChecks/HealthChecks/test/Microsoft.Extensions.Diagnostics.HealthChecks.Tests.csproj b/src/HealthChecks/HealthChecks/test/Microsoft.Extensions.Diagnostics.HealthChecks.Tests.csproj new file mode 100644 index 0000000000..361b29cf37 --- /dev/null +++ b/src/HealthChecks/HealthChecks/test/Microsoft.Extensions.Diagnostics.HealthChecks.Tests.csproj @@ -0,0 +1,15 @@ + + + + + + $(StandardTestTfms) + Microsoft.Extensions.Diagnostics.HealthChecks + + + + + + + +