| | | 1 | | using System.Runtime.CompilerServices; |
| | | 2 | | using System.Text.Json; |
| | | 3 | | using Elsa.Expressions.Models; |
| | | 4 | | using Elsa.Extensions; |
| | | 5 | | using Elsa.UserTasks.Contracts; |
| | | 6 | | using Elsa.UserTasks.Models; |
| | | 7 | | using Elsa.UserTasks.Options; |
| | | 8 | | using Elsa.Workflows; |
| | | 9 | | using Elsa.Workflows.Attributes; |
| | | 10 | | using Elsa.Workflows.Memory; |
| | | 11 | | using Elsa.Workflows.Models; |
| | | 12 | | using Microsoft.Extensions.Options; |
| | | 13 | | |
| | | 14 | | namespace Elsa.UserTasks.Activities; |
| | | 15 | | |
| | | 16 | | /// <summary> |
| | | 17 | | /// Creates a workflow-bound human task and suspends the workflow until a governed outcome resumes it. |
| | | 18 | | /// </summary> |
| | | 19 | | [Activity("Elsa", "User Tasks", "Creates a user task and waits for a human outcome.", Kind = ActivityKind.Task)] |
| | | 20 | | public sealed class UserTask : Activity<UserTaskResult> |
| | | 21 | | { |
| | | 22 | | public const string InputKey = "UserTaskInput"; |
| | | 23 | | |
| | | 24 | | [Input(Description = "The task title.")] |
| | 0 | 25 | | public Input<string> Title { get; set; } = null!; |
| | 0 | 26 | | [Input] public Input<string?> Summary { get; set; } = null!; |
| | 0 | 27 | | [Input] public Input<string?> Reference { get; set; } = null!; |
| | 0 | 28 | | [Input] public Input<IReadOnlyCollection<string>?> Tags { get; set; } = null!; |
| | 0 | 29 | | [Input] public Input<string?> TaskType { get; set; } = null!; |
| | 0 | 30 | | [Input] public Input<ParticipantReference?> Requester { get; set; } = null!; |
| | 0 | 31 | | [Input] public Input<ParticipantReference?> Assignee { get; set; } = null!; |
| | 0 | 32 | | [Input] public Input<IReadOnlyCollection<ParticipantReference>?> CandidateUsers { get; set; } = null!; |
| | 0 | 33 | | [Input] public Input<IReadOnlyCollection<ParticipantReference>?> CandidateGroups { get; set; } = null!; |
| | 0 | 34 | | [Input] public Input<IReadOnlyCollection<ParticipantReference>?> ExcludedUsers { get; set; } = null!; |
| | 0 | 35 | | [Input] public Input<UserTaskMembershipResolutionMode> MembershipResolutionMode { get; set; } = new(new Literal<User |
| | 0 | 36 | | [Input] public Input<bool> AllowManagerExclusionOverride { get; set; } = null!; |
| | 0 | 37 | | [Input] public Input<int> Priority { get; set; } = new(new Literal<int>(50)); |
| | 0 | 38 | | [Input] public Input<DateTimeOffset?> DueAt { get; set; } = null!; |
| | 0 | 39 | | [Input] public Input<string?> Instructions { get; set; } = null!; |
| | 0 | 40 | | [Input] public Input<JsonElement?> TaskData { get; set; } = null!; |
| | 0 | 41 | | [Input] public Input<UserTaskFormReference?> Form { get; set; } = null!; |
| | | 42 | | [Input(Description = "Completion actions. Keys are literal; labels may use expressions.", DefaultSyntax = "Literal", |
| | 0 | 43 | | public Input<IReadOnlyCollection<UserTaskActionDefinition>?> ActionDefinitions { get; set; } = null!; |
| | 0 | 44 | | [Input] public Input<IReadOnlyCollection<UserTaskInvitationDefinition>?> Invitations { get; set; } = null!; |
| | 0 | 45 | | [Input] public Input<bool> EnableTimeoutOutcome { get; set; } = null!; |
| | 0 | 46 | | [Input] public Input<bool> EnableCancellationOutcome { get; set; } = null!; |
| | 0 | 47 | | [Output] public Output<string> TaskId { get; set; } = null!; |
| | | 48 | | |
| | 0 | 49 | | public UserTask() |
| | | 50 | | { |
| | 0 | 51 | | } |
| | | 52 | | |
| | 0 | 53 | | public UserTask(string title, [CallerFilePath] string? source = null, [CallerLineNumber] int? line = null) : base(so |
| | | 54 | | { |
| | 0 | 55 | | Title = new Input<string>(new Literal<string>(title)); |
| | 0 | 56 | | } |
| | | 57 | | |
| | | 58 | | protected override async ValueTask ExecuteAsync(ActivityExecutionContext context) |
| | | 59 | | { |
| | 0 | 60 | | var identityGenerator = context.GetRequiredService<IIdentityGenerator>(); |
| | 0 | 61 | | var taskId = identityGenerator.GenerateId(); |
| | 0 | 62 | | var bookmarkId = identityGenerator.GenerateId(); |
| | 0 | 63 | | var options = context.GetService<IOptions<UserTasksOptions>>()?.Value ?? new UserTasksOptions(); |
| | 0 | 64 | | var definition = new UserTaskDefinitionSnapshot |
| | 0 | 65 | | { |
| | 0 | 66 | | Title = Title.Get(context), |
| | 0 | 67 | | Summary = Summary.GetOrDefault(context), |
| | 0 | 68 | | Reference = Reference.GetOrDefault(context), |
| | 0 | 69 | | Tags = Tags.GetOrDefault(context) ?? [], |
| | 0 | 70 | | TaskType = TaskType.GetOrDefault(context), |
| | 0 | 71 | | Requester = Requester.GetOrDefault(context), |
| | 0 | 72 | | Assignee = Assignee.GetOrDefault(context), |
| | 0 | 73 | | CandidateUsers = CandidateUsers.GetOrDefault(context) ?? [], |
| | 0 | 74 | | CandidateGroups = CandidateGroups.GetOrDefault(context) ?? [], |
| | 0 | 75 | | ExcludedUsers = ExcludedUsers.GetOrDefault(context) ?? [], |
| | 0 | 76 | | MembershipResolutionMode = MembershipResolutionMode.GetOrDefault(context), |
| | 0 | 77 | | AllowManagerExclusionOverride = AllowManagerExclusionOverride.GetOrDefault(context), |
| | 0 | 78 | | Priority = Priority.GetOrDefault(context), |
| | 0 | 79 | | DueAt = DueAt.GetOrDefault(context), |
| | 0 | 80 | | Instructions = Instructions.GetOrDefault(context), |
| | 0 | 81 | | TaskData = TaskData.GetOrDefault(context), |
| | 0 | 82 | | FormReference = Form.GetOrDefault(context), |
| | 0 | 83 | | Actions = (ActionDefinitions.GetOrDefault(context) ?? []).Select(x => x.Materialize(context)).ToArray(), |
| | 0 | 84 | | Invitations = Invitations.GetOrDefault(context) ?? [], |
| | 0 | 85 | | EnableTimeoutOutcome = EnableTimeoutOutcome.GetOrDefault(context), |
| | 0 | 86 | | EnableCancellationOutcome = EnableCancellationOutcome.GetOrDefault(context) |
| | 0 | 87 | | }; |
| | 0 | 88 | | var workflow = context.WorkflowExecutionContext.Workflow; |
| | 0 | 89 | | var materialization = new UserTaskMaterialization( |
| | 0 | 90 | | // The workflow's own tenant wins; the configured default is only a fallback for single-tenant hosts. |
| | 0 | 91 | | workflow.Identity.TenantId ?? options.DefaultTenantId, |
| | 0 | 92 | | workflow.Identity.DefinitionId, |
| | 0 | 93 | | context.WorkflowExecutionContext.Id, |
| | 0 | 94 | | context.Id, |
| | 0 | 95 | | bookmarkId, |
| | 0 | 96 | | definition, |
| | 0 | 97 | | [], |
| | 0 | 98 | | [], |
| | 0 | 99 | | context.WorkflowExecutionContext.SystemClock.UtcNow, |
| | 0 | 100 | | taskId, |
| | 0 | 101 | | workflow.WorkflowMetadata.Name, |
| | 0 | 102 | | workflow.Identity.Version, |
| | 0 | 103 | | context.WorkflowExecutionContext.CorrelationId); |
| | 0 | 104 | | context.CreateBookmark(new CreateBookmarkArgs |
| | 0 | 105 | | { |
| | 0 | 106 | | BookmarkId = bookmarkId, |
| | 0 | 107 | | BookmarkName = nameof(UserTask), |
| | 0 | 108 | | Stimulus = materialization, |
| | 0 | 109 | | Callback = ResumeAsync, |
| | 0 | 110 | | IncludeActivityInstanceId = false |
| | 0 | 111 | | }); |
| | 0 | 112 | | TaskId.Set(context, taskId); |
| | 0 | 113 | | } |
| | | 114 | | |
| | | 115 | | private async ValueTask ResumeAsync(ActivityExecutionContext context) |
| | | 116 | | { |
| | 0 | 117 | | var stimulus = context.GetWorkflowInput<UserTaskStimulus>(InputKey); |
| | 0 | 118 | | Result?.Set(context, new UserTaskResult(stimulus.ActionKey, stimulus.CompletionData, stimulus.CompletedBy, stimu |
| | 0 | 119 | | await context.CompleteActivityAsync(); |
| | 0 | 120 | | } |
| | | 121 | | } |
| | | 122 | | |
| | | 123 | | /// <summary> |
| | | 124 | | /// Design-time action definition. Key is deliberately a plain literal so workflow expressions cannot |
| | | 125 | | /// change the contract of an already activated task; only the label is expression-capable. |
| | | 126 | | /// </summary> |
| | | 127 | | public sealed class UserTaskActionDefinition |
| | | 128 | | { |
| | | 129 | | public string Key { get; set; } = ""; |
| | | 130 | | public Input<string> Label { get; set; } = null!; |
| | | 131 | | public IReadOnlyDictionary<string, object?>? Metadata { get; set; } |
| | | 132 | | |
| | | 133 | | public UserTaskActionDefinition() |
| | | 134 | | { |
| | | 135 | | } |
| | | 136 | | |
| | | 137 | | public UserTaskActionDefinition(string key, string label) |
| | | 138 | | { |
| | | 139 | | Key = key; |
| | | 140 | | Label = new Input<string>(new Literal<string>(label)); |
| | | 141 | | } |
| | | 142 | | |
| | | 143 | | internal UserTaskAction Materialize(ActivityExecutionContext context) => new(Key, Label.Get(context), Metadata); |
| | | 144 | | } |