Add StellaOps.Workflow engine: 14 libraries, WebService, 8 test projects
Extract product-agnostic workflow engine from Ablera.Serdica.Workflow into standalone StellaOps.Workflow.* libraries targeting net10.0. Libraries (14): - Contracts, Abstractions (compiler, decompiler, expression runtime) - Engine (execution, signaling, scheduling, projections, hosted services) - ElkSharp (generic graph layout algorithm) - Renderer.ElkSharp, Renderer.ElkJs, Renderer.Msagl, Renderer.Svg - Signaling.Redis, Signaling.OracleAq - DataStore.MongoDB, DataStore.PostgreSQL, DataStore.Oracle WebService: ASP.NET Core Minimal API with 22 endpoints Tests (8 projects, 109 tests pass): - Engine.Tests (105 pass), WebService.Tests (4 E2E pass) - Renderer.Tests, DataStore.MongoDB/Oracle/PostgreSQL.Tests - Signaling.Redis.Tests, IntegrationTests.Shared Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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using System;
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using System.Collections.Generic;
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using WorkflowEngine.Abstractions;
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using WorkflowEngine.Contracts;
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namespace WorkflowEngine.Tutorials;
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/// <summary>
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/// Shared support helper for policy change workflows.
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/// Centralizes addresses, payload builders, and reusable flow patterns.
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/// </summary>
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internal static class PolicyWorkflowSupport
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{
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// ═══════════════════════════════════════════════════════════
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// ADDRESS REGISTRY
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// Centralize all service routing in one place.
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// ═══════════════════════════════════════════════════════════
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internal static readonly LegacyRabbitAddress ValidatePolicyAddress =
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new("pas_policy_validate");
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internal static readonly LegacyRabbitAddress AlterPolicyAddress =
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new("pas_annexprocessing_alterpolicy");
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internal static readonly LegacyRabbitAddress CalculatePremiumAddress =
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new("pas_premium_calculate_for_object",
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SerdicaLegacyRabbitMode.MicroserviceConsumer);
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internal static readonly LegacyRabbitAddress GetAnnexDescAddress =
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new("pas_polannexes_get");
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internal static readonly LegacyRabbitAddress NotificationEmailAddress =
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new("notifications_send_email",
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SerdicaLegacyRabbitMode.MicroserviceConsumer);
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// ═══════════════════════════════════════════════════════════
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// WORKFLOW REFERENCES
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// For SubWorkflow and ContinueWith invocations.
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// ═══════════════════════════════════════════════════════════
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internal static readonly WorkflowReference ReviewPolicyReference =
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new("ReviewPolicyOpenForChange");
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internal static readonly WorkflowReference TransferPolicyReference =
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new("TransferPolicy");
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// ═══════════════════════════════════════════════════════════
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// STATE INITIALIZATION
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// Base state + override pattern for workflow families.
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// ═══════════════════════════════════════════════════════════
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/// <summary>
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/// Builds a state initialization expression with common policy fields
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/// and optional per-workflow overrides.
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/// </summary>
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internal static WorkflowExpressionDefinition BuildInitializeState(
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params WorkflowNamedExpressionDefinition[] overrides)
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{
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var properties = new List<WorkflowNamedExpressionDefinition>
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{
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WorkflowExpr.Prop("srPolicyId", WorkflowExpr.Path("start.srPolicyId")),
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WorkflowExpr.Prop("srAnnexId", WorkflowExpr.Path("start.srAnnexId")),
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WorkflowExpr.Prop("srCustId", WorkflowExpr.Path("start.srCustId")),
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WorkflowExpr.Prop("annexType", WorkflowExpr.Path("start.annexType")),
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WorkflowExpr.Prop("beginDate", WorkflowExpr.Path("start.beginDate")),
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WorkflowExpr.Prop("endDate", WorkflowExpr.Path("start.endDate")),
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};
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// Apply overrides: replace existing or add new properties.
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foreach (var o in overrides)
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{
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var existing = properties.FindIndex(
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p => string.Equals(p.Name, o.Name, StringComparison.OrdinalIgnoreCase));
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if (existing >= 0)
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{
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properties[existing] = o;
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}
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else
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{
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properties.Add(o);
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}
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}
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return WorkflowExpr.Object(properties);
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}
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// ═══════════════════════════════════════════════════════════
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// PAYLOAD BUILDERS
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// Reusable expressions for common service call payloads.
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// ═══════════════════════════════════════════════════════════
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internal static WorkflowExpressionDefinition BuildAlterPolicyPayload()
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{
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return WorkflowExpr.Object(
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WorkflowExpr.Prop("srPolicyId", WorkflowExpr.Path("state.srPolicyId")),
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WorkflowExpr.Prop("beginDate", WorkflowExpr.Path("state.beginDate")),
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WorkflowExpr.Prop("endDate", WorkflowExpr.Path("state.endDate")),
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WorkflowExpr.Prop("annexType", WorkflowExpr.Path("state.annexType")));
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}
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internal static WorkflowExpressionDefinition BuildAnnexTypeEquals(string type)
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{
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return WorkflowExpr.Eq(
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WorkflowExpr.Func("upper", WorkflowExpr.Path("state.annexType")),
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WorkflowExpr.String(type));
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}
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internal static WorkflowExpressionDefinition BuildPolicyIdPayload()
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{
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return WorkflowExpr.Object(
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WorkflowExpr.Prop("srPolicyId", WorkflowExpr.Path("state.srPolicyId")));
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}
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// ═══════════════════════════════════════════════════════════
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// WORKFLOW INVOCATION BUILDERS
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// ═══════════════════════════════════════════════════════════
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internal static WorkflowWorkflowInvocationDeclaration BuildReviewInvocation()
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{
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return new WorkflowWorkflowInvocationDeclaration
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{
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WorkflowName = ReviewPolicyReference.WorkflowName,
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PayloadExpression = WorkflowExpr.Path("state"),
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};
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}
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}
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/// <summary>
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/// Extension methods for common flow patterns.
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/// Used across multiple workflows for DRY step sequences.
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/// </summary>
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internal static class PolicyWorkflowFlowExtensions
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{
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/// <summary>
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/// Applies product info from a service call result into workflow state.
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/// </summary>
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internal static WorkflowFlowBuilder<T> ApplyProductInfo<T>(
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this WorkflowFlowBuilder<T> flow,
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string resultKey = "productInfo")
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where T : class
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{
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return flow
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.SetIfHasValue("productCode",
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WorkflowExpr.Func("upper",
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WorkflowExpr.Path($"result.{resultKey}.productCode")))
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.SetIfHasValue("lob",
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WorkflowExpr.Func("upper",
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WorkflowExpr.Path($"result.{resultKey}.lob")))
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.SetIfHasValue("contractType",
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WorkflowExpr.Path($"result.{resultKey}.contractType"));
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}
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/// <summary>
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/// Standard "load product info and apply" pattern.
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/// </summary>
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internal static WorkflowFlowBuilder<T> LoadAndApplyProductInfo<T>(
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this WorkflowFlowBuilder<T> flow)
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where T : class
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{
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return flow
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.Call<object>("Load Product Info",
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Address.LegacyRabbit("pas_get_policy_product_info"),
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PolicyWorkflowSupport.BuildPolicyIdPayload(),
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WorkflowHandledBranchAction.Complete,
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WorkflowHandledBranchAction.Complete,
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resultKey: "productInfo")
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.ApplyProductInfo();
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}
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}
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