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* Distributed workflow tracing with cross-service correlation\n *\n * Enables tracking workflows that span multiple microservices by propagating\n * workflow identity (workflowId, stepName, stepIndex) via baggage in message headers.\n *\n * Unlike local workflow.ts (which uses AsyncLocalStorage), distributed workflows\n * propagate context across network boundaries using W3C baggage.\n *\n * @example Order fulfillment saga across services\n * ```typescript\n * // Service A: Order Service\n * import { traceDistributedWorkflow, WorkflowBaggage } from 'autotel/workflow-distributed';\n * import { traceProducer } from 'autotel/messaging';\n *\n * export const createOrder = traceDistributedWorkflow({\n * name: 'OrderFulfillment',\n * workflowIdFrom: (order) => order.id,\n * version: '1.0.0',\n * })(ctx => async (order: Order) => {\n * // Workflow baggage is auto-set\n * await publishToInventory(order);\n * });\n *\n * const publishToInventory = traceProducer({\n * system: 'kafka',\n * destination: 'inventory-requests',\n * propagateBaggage: true, // Includes workflow.* baggage\n * })(ctx => async (order) => {\n * await producer.send({ topic: 'inventory-requests', value: order });\n * });\n *\n * // Service B: Inventory Service\n * import { traceDistributedStep, WorkflowBaggage } from 'autotel/workflow-distributed';\n *\n * export const processInventory = traceDistributedStep({\n * name: 'ReserveInventory',\n * extractBaggage: true, // Extracts workflow.* from headers\n * })(ctx => async (message) => {\n * const workflow = WorkflowBaggage.get(ctx);\n * // workflow.workflowId === order.id (propagated from Service A)\n * console.log(`Processing step for workflow ${workflow.workflowId}`);\n * await reserveItems(message.items);\n * });\n * ```\n *\n * @module\n */\n\nimport { context, propagation, SpanKind } from '@opentelemetry/api';\nimport { createSafeBaggageSchema } from './business-baggage';\nimport { emitCorrelatedEvent } from './correlated-events';\nimport { trace } from './functional';\nimport type { TraceContext } from './trace-context';\n\n// ============================================================================\n// Workflow Baggage Schema\n// ============================================================================\n\n/**\n * Workflow baggage field definitions\n */\nconst workflowBaggageFields = {\n /** Unique identifier for the workflow instance */\n workflowId: { type: 'string' as const, maxLength: 128, required: true },\n\n /** Name/type of the workflow (e.g., \"OrderFulfillment\") */\n workflowName: { type: 'string' as const, maxLength: 64, required: true },\n\n /** Version of the workflow definition */\n workflowVersion: { type: 'string' as const, maxLength: 32 },\n\n /** Current step name */\n stepName: { type: 'string' as const, maxLength: 64 },\n\n /** Current step index (0-based) */\n stepIndex: { type: 'number' as const },\n\n /** Total number of steps (if known) */\n totalSteps: { type: 'number' as const },\n\n /** Parent workflow ID (for sub-workflows) */\n parentWorkflowId: { type: 'string' as const, maxLength: 128 },\n\n /** Correlation ID for external systems */\n correlationId: { type: 'string' as const, maxLength: 128 },\n\n /** Workflow priority */\n priority: {\n type: 'enum' as const,\n values: ['low', 'normal', 'high', 'critical'] as const,\n },\n\n /** Initiating user/system */\n initiatedBy: { type: 'string' as const, maxLength: 64 },\n\n /** Workflow start timestamp (ISO) */\n startedAt: { type: 'string' as const, maxLength: 30 },\n} as const;\n\n/**\n * Pre-built baggage schema for distributed workflows\n *\n * Use this to read/write workflow context that propagates across services.\n *\n * @example Setting workflow baggage\n * ```typescript\n * WorkflowBaggage.set(ctx, {\n * workflowId: 'order-12345',\n * workflowName: 'OrderFulfillment',\n * stepName: 'ReserveInventory',\n * stepIndex: 1,\n * });\n * ```\n *\n * @example Reading workflow baggage in downstream service\n * ```typescript\n * const { workflowId, workflowName, stepIndex } = WorkflowBaggage.get(ctx);\n * console.log(`Processing ${workflowName} step ${stepIndex}`);\n * ```\n */\nexport const WorkflowBaggage = createSafeBaggageSchema(workflowBaggageFields, {\n prefix: 'workflow',\n hashHighCardinality: false, // Workflow IDs should be traceable\n redactPII: false, // Workflow fields are internal identifiers\n});\n\n/**\n * Type for workflow baggage values\n */\nexport type WorkflowBaggageValues = {\n workflowId: string;\n workflowName: string;\n workflowVersion?: string;\n stepName?: string;\n stepIndex?: number;\n totalSteps?: number;\n parentWorkflowId?: string;\n correlationId?: string;\n priority?: 'low' | 'normal' | 'high' | 'critical';\n initiatedBy?: string;\n startedAt?: string;\n};\n\n// ============================================================================\n// Types\n// ============================================================================\n\n/**\n * Configuration for distributed workflow tracing\n */\nexport interface DistributedWorkflowConfig {\n /** Workflow name/type (e.g., \"OrderFulfillment\", \"UserOnboarding\") */\n name: string;\n\n /**\n * Extract workflow ID from function arguments\n *\n * Receives all arguments passed to the workflow function, allowing\n * multi-parameter handlers to derive workflow IDs from any argument.\n *\n * @example Single argument\n * ```typescript\n * workflowIdFrom: (order) => order.id\n * ```\n *\n * @example Multiple arguments (payload + metadata)\n * ```typescript\n * workflowIdFrom: (payload, metadata) => metadata.correlationId ?? payload.id\n * ```\n */\n workflowIdFrom: (...args: unknown[]) => string;\n\n /** Workflow version (e.g., \"1.0.0\", \"2023-01-15\") */\n version?: string;\n\n /** Total number of steps if known */\n totalSteps?: number;\n\n /** Parent workflow ID (for sub-workflows) */\n parentWorkflowId?: string;\n\n /** Correlation ID for external systems */\n correlationId?: string;\n\n /** Workflow priority */\n priority?: 'low' | 'normal' | 'high' | 'critical';\n\n /** User/system that initiated the workflow */\n initiatedBy?: string;\n\n /** Additional span attributes */\n attributes?: Record;\n\n /** Callback on workflow start */\n onStart?: (ctx: DistributedWorkflowContext) => void;\n\n /** Callback on workflow completion */\n onComplete?: (ctx: DistributedWorkflowContext, result: unknown) => void;\n\n /** Callback on workflow error */\n onError?: (ctx: DistributedWorkflowContext, error: Error) => void;\n}\n\n/**\n * Configuration for distributed workflow step\n */\nexport interface DistributedStepConfig {\n /** Step name (e.g., \"ReserveInventory\", \"ChargePayment\") */\n name: string;\n\n /**\n * Extract baggage from incoming message/request\n *\n * If true, reads workflow baggage from current context (assumes already extracted).\n * If function, extracts from arguments.\n *\n * @default true\n */\n extractBaggage?:\n | boolean\n | ((args: unknown[]) => WorkflowBaggageValues | null);\n\n /** Override step index (otherwise uses baggage or auto-increments) */\n stepIndex?: number;\n\n /** Additional span attributes */\n attributes?: Record;\n\n /** Whether this step is idempotent (safe to retry) */\n idempotent?: boolean;\n\n /** Whether this step is a compensation/rollback step */\n isCompensation?: boolean;\n\n /** Callback on step start */\n onStart?: (ctx: DistributedStepContext) => void;\n\n /** Callback on step completion */\n onComplete?: (ctx: DistributedStepContext, result: unknown) => void;\n\n /** Callback on step error */\n onError?: (ctx: DistributedStepContext, error: Error) => void;\n}\n\n/**\n * Extended context for distributed workflow root\n */\nexport interface DistributedWorkflowContext extends TraceContext {\n /** The workflow ID */\n workflowId: string;\n\n /** The workflow name */\n workflowName: string;\n\n /** The workflow version */\n workflowVersion?: string;\n\n /** Get workflow baggage for propagation to other services */\n getWorkflowBaggage(): WorkflowBaggageValues;\n\n /** Set additional workflow baggage fields */\n setWorkflowBaggage(values: Partial): void;\n\n /** Get headers with workflow baggage for outgoing requests */\n getWorkflowHeaders(): Record;\n\n /** Record workflow step completion (for progress tracking) */\n recordStepProgress(stepName: string, stepIndex: number): void;\n}\n\n/**\n * Extended context for distributed workflow step\n */\nexport interface DistributedStepContext extends TraceContext {\n /** The workflow ID (from baggage) */\n workflowId: string | null;\n\n /** The workflow name (from baggage) */\n workflowName: string | null;\n\n /** The current step name */\n stepName: string;\n\n /** The current step index */\n stepIndex: number | null;\n\n /** Whether this step is a compensation */\n isCompensation: boolean;\n\n /** Get the full workflow baggage */\n getWorkflowBaggage(): WorkflowBaggageValues | null;\n\n /** Update workflow baggage (e.g., increment step index) */\n updateWorkflowBaggage(values: Partial): void;\n\n /** Get headers with updated workflow baggage for downstream calls */\n getWorkflowHeaders(): Record;\n\n /** Mark step as requiring compensation on failure */\n requiresCompensation(compensationData?: Record): void;\n}\n\n// ============================================================================\n// Distributed Workflow Tracer\n// ============================================================================\n\n/**\n * Create a traced distributed workflow function\n *\n * Wraps a function as the entry point for a distributed workflow. Automatically:\n * - Generates or extracts workflow ID\n * - Sets workflow baggage for downstream propagation\n * - Creates root span with workflow attributes\n *\n * @param config - Workflow configuration\n * @returns Factory function for the workflow handler\n *\n * @example Basic usage\n * ```typescript\n * export const createOrder = traceDistributedWorkflow({\n * name: 'OrderFulfillment',\n * workflowIdFrom: (order) => order.id,\n * version: '1.0.0',\n * })(ctx => async (order: Order) => {\n * ctx.recordStepProgress('ValidateOrder', 0);\n * await validateOrder(order);\n *\n * ctx.recordStepProgress('ReserveInventory', 1);\n * await publishToInventoryService(order);\n *\n * return { workflowId: ctx.workflowId, status: 'started' };\n * });\n * ```\n */\nexport function traceDistributedWorkflow(\n config: DistributedWorkflowConfig,\n) {\n const spanName = `workflow.${config.name}`;\n\n return (\n fnFactory: (\n ctx: DistributedWorkflowContext,\n ) => (...args: TArgs) => Promise,\n ): ((...args: TArgs) => Promise) => {\n return trace(\n { name: spanName, spanKind: SpanKind.INTERNAL },\n (baseCtx) => {\n return async (...args: TArgs) => {\n // Extract workflow ID from arguments (spread to allow multi-arg access)\n const workflowId = config.workflowIdFrom(...args);\n const startedAt = new Date().toISOString();\n\n // Initialize workflow baggage\n const baggageValues: WorkflowBaggageValues = {\n workflowId,\n workflowName: config.name,\n workflowVersion: config.version,\n stepIndex: 0,\n totalSteps: config.totalSteps,\n parentWorkflowId: config.parentWorkflowId,\n correlationId: config.correlationId,\n priority: config.priority,\n initiatedBy: config.initiatedBy,\n startedAt,\n };\n\n // Set baggage\n WorkflowBaggage.set(baseCtx, baggageValues);\n\n // Set span attributes\n baseCtx.setAttribute('workflow.id', workflowId);\n baseCtx.setAttribute('workflow.name', config.name);\n if (config.version) {\n baseCtx.setAttribute('workflow.version', config.version);\n }\n if (config.totalSteps) {\n baseCtx.setAttribute('workflow.total_steps', config.totalSteps);\n }\n if (config.parentWorkflowId) {\n baseCtx.setAttribute('workflow.parent_id', config.parentWorkflowId);\n }\n if (config.priority) {\n baseCtx.setAttribute('workflow.priority', config.priority);\n }\n if (config.initiatedBy) {\n baseCtx.setAttribute('workflow.initiated_by', config.initiatedBy);\n }\n baseCtx.setAttribute('workflow.started_at', startedAt);\n\n // Apply custom attributes\n if (config.attributes) {\n for (const [key, value] of Object.entries(config.attributes)) {\n baseCtx.setAttribute(key, value);\n }\n }\n\n // Create extended context\n const workflowCtx: DistributedWorkflowContext = {\n ...baseCtx,\n workflowId,\n workflowName: config.name,\n workflowVersion: config.version,\n\n getWorkflowBaggage(): WorkflowBaggageValues {\n return { ...baggageValues };\n },\n\n setWorkflowBaggage(values: Partial): void {\n Object.assign(baggageValues, values);\n WorkflowBaggage.set(baseCtx, baggageValues);\n },\n\n getWorkflowHeaders(): Record {\n const headers: Record = {};\n const ctx = context.active();\n propagation.inject(ctx, headers);\n return headers;\n },\n\n recordStepProgress(stepName: string, stepIndex: number): void {\n baggageValues.stepName = stepName;\n baggageValues.stepIndex = stepIndex;\n WorkflowBaggage.set(baseCtx, baggageValues);\n\n emitCorrelatedEvent(baseCtx, 'workflow.step_progress', {\n 'workflow.step.name': stepName,\n 'workflow.step.index': stepIndex,\n });\n },\n };\n\n // Call onStart callback\n config.onStart?.(workflowCtx);\n\n // Add start event\n emitCorrelatedEvent(baseCtx, 'workflow.started', {\n 'workflow.id': workflowId,\n 'workflow.name': config.name,\n });\n\n try {\n const userFn = fnFactory(workflowCtx);\n const result = await userFn(...args);\n\n // Call onComplete callback\n config.onComplete?.(workflowCtx, result);\n\n // Add completion event\n emitCorrelatedEvent(baseCtx, 'workflow.completed', {\n 'workflow.id': workflowId,\n });\n\n return result;\n } catch (error) {\n // Call onError callback\n config.onError?.(workflowCtx, error as Error);\n\n // Add error event\n emitCorrelatedEvent(baseCtx, 'workflow.failed', {\n 'workflow.id': workflowId,\n 'workflow.error': (error as Error).message,\n });\n\n throw error;\n }\n };\n },\n );\n };\n}\n\n// ============================================================================\n// Distributed Step Tracer\n// ============================================================================\n\n/**\n * Create a traced distributed workflow step\n *\n * Use in downstream services to trace steps that are part of a distributed workflow.\n * Automatically extracts workflow baggage from the current context.\n *\n * @param config - Step configuration\n * @returns Factory function for the step handler\n *\n * @example Consumer in downstream service\n * ```typescript\n * export const processInventory = traceConsumer({\n * system: 'kafka',\n * destination: 'inventory-requests',\n * extractBaggage: true, // Extracts workflow.* from headers\n * })(ctx => {\n * // Wrap inner logic with traceDistributedStep\n * return traceDistributedStep({\n * name: 'ReserveInventory',\n * })(stepCtx => async (message) => {\n * console.log(`Processing workflow ${stepCtx.workflowId}`);\n * await reserveItems(message.items);\n * })(message);\n * });\n * ```\n *\n * @example Standalone step handler\n * ```typescript\n * export const reserveInventory = traceDistributedStep({\n * name: 'ReserveInventory',\n * idempotent: true,\n * })(ctx => async (request: InventoryRequest) => {\n * if (ctx.workflowId) {\n * console.log(`Part of workflow ${ctx.workflowId}, step ${ctx.stepIndex}`);\n * }\n * return await inventoryService.reserve(request.items);\n * });\n * ```\n */\nexport function traceDistributedStep(\n config: DistributedStepConfig,\n) {\n const spanName = `workflow.step.${config.name}`;\n\n return (\n fnFactory: (\n ctx: DistributedStepContext,\n ) => (...args: TArgs) => Promise,\n ): ((...args: TArgs) => Promise) => {\n return trace(\n { name: spanName, spanKind: SpanKind.INTERNAL },\n (baseCtx) => {\n return async (...args: TArgs) => {\n // Extract workflow baggage\n let baggageValues: WorkflowBaggageValues | null = null;\n\n const extractBaggage = config.extractBaggage ?? true;\n if (typeof extractBaggage === 'function') {\n baggageValues = extractBaggage(args);\n } else if (extractBaggage) {\n // Read from current context\n const extracted = WorkflowBaggage.get(baseCtx);\n if (extracted.workflowId && extracted.workflowName) {\n baggageValues = extracted as WorkflowBaggageValues;\n }\n }\n\n // Determine step index\n // If explicit stepIndex provided in config, use it\n // Otherwise, auto-increment from baggage if available\n let stepIndex: number | null;\n if (config.stepIndex !== undefined) {\n stepIndex = config.stepIndex;\n } else if (baggageValues?.stepIndex === undefined) {\n stepIndex = null;\n } else {\n // Auto-increment from previous step\n stepIndex = baggageValues.stepIndex + 1;\n }\n\n // Update baggage with current step\n if (baggageValues) {\n baggageValues.stepName = config.name;\n if (stepIndex !== null) {\n baggageValues.stepIndex = stepIndex;\n }\n WorkflowBaggage.set(baseCtx, baggageValues);\n }\n\n // Set span attributes\n baseCtx.setAttribute('workflow.step.name', config.name);\n if (stepIndex !== null) {\n baseCtx.setAttribute('workflow.step.index', stepIndex);\n }\n if (config.idempotent !== undefined) {\n baseCtx.setAttribute('workflow.step.idempotent', config.idempotent);\n }\n if (config.isCompensation) {\n baseCtx.setAttribute('workflow.step.is_compensation', true);\n }\n\n // Add workflow context attributes if available\n if (baggageValues) {\n baseCtx.setAttribute('workflow.id', baggageValues.workflowId);\n baseCtx.setAttribute('workflow.name', baggageValues.workflowName);\n if (baggageValues.workflowVersion) {\n baseCtx.setAttribute(\n 'workflow.version',\n baggageValues.workflowVersion,\n );\n }\n if (baggageValues.totalSteps) {\n baseCtx.setAttribute(\n 'workflow.total_steps',\n baggageValues.totalSteps,\n );\n }\n }\n\n // Apply custom attributes\n if (config.attributes) {\n for (const [key, value] of Object.entries(config.attributes)) {\n baseCtx.setAttribute(key, value);\n }\n }\n\n // Compensation data storage\n let compensationData: Record | undefined;\n\n // Create extended context\n const stepCtx: DistributedStepContext = {\n ...baseCtx,\n workflowId: baggageValues?.workflowId ?? null,\n workflowName: baggageValues?.workflowName ?? null,\n stepName: config.name,\n stepIndex,\n isCompensation: config.isCompensation ?? false,\n\n getWorkflowBaggage(): WorkflowBaggageValues | null {\n return baggageValues ? { ...baggageValues } : null;\n },\n\n updateWorkflowBaggage(\n values: Partial,\n ): void {\n if (baggageValues) {\n Object.assign(baggageValues, values);\n WorkflowBaggage.set(baseCtx, baggageValues);\n }\n },\n\n getWorkflowHeaders(): Record {\n const headers: Record = {};\n const ctx = context.active();\n propagation.inject(ctx, headers);\n return headers;\n },\n\n requiresCompensation(data?: Record): void {\n compensationData = data;\n baseCtx.setAttribute('workflow.step.requires_compensation', true);\n emitCorrelatedEvent(\n baseCtx,\n 'workflow.step.compensation_registered',\n {\n 'workflow.step.name': config.name,\n ...(data && {\n 'workflow.step.compensation_data': JSON.stringify(data),\n }),\n },\n );\n },\n };\n\n // Call onStart callback\n config.onStart?.(stepCtx);\n\n // Add start event\n emitCorrelatedEvent(baseCtx, 'workflow.step.started', {\n 'workflow.step.name': config.name,\n ...(baggageValues && { 'workflow.id': baggageValues.workflowId }),\n });\n\n try {\n const userFn = fnFactory(stepCtx);\n const result = await userFn(...args);\n\n // Call onComplete callback\n config.onComplete?.(stepCtx, result);\n\n // Add completion event\n emitCorrelatedEvent(baseCtx, 'workflow.step.completed', {\n 'workflow.step.name': config.name,\n });\n\n return result;\n } catch (error) {\n // Call onError callback\n config.onError?.(stepCtx, error as Error);\n\n // Add error event with compensation info if registered\n emitCorrelatedEvent(baseCtx, 'workflow.step.failed', {\n 'workflow.step.name': config.name,\n 'workflow.step.error': (error as Error).message,\n ...(compensationData && {\n 'workflow.step.requires_compensation': true,\n }),\n });\n\n throw error;\n }\n };\n },\n );\n };\n}\n\n// ============================================================================\n// Utility Functions\n// ============================================================================\n\n/**\n * Generate a unique workflow ID\n *\n * @param prefix - Optional prefix for the ID\n * @returns A unique workflow ID\n *\n * @example\n * ```typescript\n * const workflowId = generateWorkflowId('order'); // \"order-abc123def456\"\n * ```\n */\nexport function generateWorkflowId(prefix?: string): string {\n const random = Math.random().toString(36).slice(2, 15);\n const timestamp = Date.now().toString(36);\n const id = `${timestamp}-${random}`;\n return prefix ? `${prefix}-${id}` : id;\n}\n\n/**\n * Check if the current context is part of a distributed workflow\n *\n * @param ctx - The trace context\n * @returns True if workflow baggage is present\n */\nexport function isInDistributedWorkflow(ctx: TraceContext): boolean {\n const baggage = WorkflowBaggage.get(ctx);\n return !!(baggage.workflowId && baggage.workflowName);\n}\n\n/**\n * Get workflow progress information\n *\n * @param ctx - The trace context\n * @returns Progress info or null if not in a workflow\n */\nexport function getWorkflowProgress(ctx: TraceContext): {\n workflowId: string;\n workflowName: string;\n currentStep: string | null;\n currentStepIndex: number | null;\n totalSteps: number | null;\n percentComplete: number | null;\n} | null {\n const baggage = WorkflowBaggage.get(ctx);\n if (!baggage.workflowId || !baggage.workflowName) {\n return null;\n }\n\n const percentComplete =\n baggage.totalSteps && baggage.stepIndex !== undefined\n ? Math.round(((baggage.stepIndex + 1) / baggage.totalSteps) * 100)\n : null;\n\n return {\n workflowId: baggage.workflowId,\n workflowName: baggage.workflowName,\n currentStep: baggage.stepName ?? null,\n currentStepIndex: baggage.stepIndex ?? null,\n totalSteps: baggage.totalSteps ?? null,\n percentComplete,\n };\n}\n\n/**\n * Create workflow correlation headers for manual propagation\n *\n * Use when you need to manually add workflow context to outgoing requests.\n *\n * @param values - Workflow baggage values\n * @returns Headers object with workflow baggage\n *\n * @example\n * ```typescript\n * const headers = createWorkflowHeaders({\n * workflowId: 'order-123',\n * workflowName: 'OrderFulfillment',\n * stepIndex: 2,\n * });\n *\n * await fetch('/api/inventory', { headers });\n * ```\n */\nexport function createWorkflowHeaders(\n values: Partial,\n): Record {\n const headers: Record = {};\n\n // Build baggage string\n const baggageEntries: string[] = [];\n\n if (values.workflowId) {\n baggageEntries.push(\n `workflow.workflowId=${encodeURIComponent(values.workflowId)}`,\n );\n }\n if (values.workflowName) {\n baggageEntries.push(\n `workflow.workflowName=${encodeURIComponent(values.workflowName)}`,\n );\n }\n if (values.workflowVersion) {\n baggageEntries.push(\n `workflow.workflowVersion=${encodeURIComponent(values.workflowVersion)}`,\n );\n }\n if (values.stepName) {\n baggageEntries.push(\n `workflow.stepName=${encodeURIComponent(values.stepName)}`,\n );\n }\n if (values.stepIndex !== undefined) {\n baggageEntries.push(`workflow.stepIndex=${values.stepIndex}`);\n }\n if (values.totalSteps !== undefined) {\n baggageEntries.push(`workflow.totalSteps=${values.totalSteps}`);\n }\n if (values.priority) {\n baggageEntries.push(`workflow.priority=${values.priority}`);\n }\n if (values.correlationId) {\n baggageEntries.push(\n `workflow.correlationId=${encodeURIComponent(values.correlationId)}`,\n );\n }\n if (values.parentWorkflowId) {\n baggageEntries.push(\n `workflow.parentWorkflowId=${encodeURIComponent(values.parentWorkflowId)}`,\n );\n }\n if (values.initiatedBy) {\n baggageEntries.push(\n `workflow.initiatedBy=${encodeURIComponent(values.initiatedBy)}`,\n );\n }\n if (values.startedAt) {\n baggageEntries.push(\n `workflow.startedAt=${encodeURIComponent(values.startedAt)}`,\n );\n }\n\n if (baggageEntries.length > 0) {\n headers['baggage'] = baggageEntries.join(',');\n }\n\n return headers;\n}\n\n/**\n * Parse workflow context from baggage header\n *\n * @param baggageHeader - The baggage header value\n * @returns Parsed workflow values or null\n */\nexport function parseWorkflowFromBaggage(\n baggageHeader: string,\n): Partial | null {\n if (!baggageHeader) {\n return null;\n }\n\n const values: Partial = {};\n const entries = baggageHeader.split(',');\n\n for (const entry of entries) {\n const [key, value] = entry.trim().split('=');\n if (!key || !value) continue;\n\n const decodedValue = decodeURIComponent(value);\n\n switch (key) {\n case 'workflow.workflowId': {\n values.workflowId = decodedValue;\n break;\n }\n case 'workflow.workflowName': {\n values.workflowName = decodedValue;\n break;\n }\n case 'workflow.workflowVersion': {\n values.workflowVersion = decodedValue;\n break;\n }\n case 'workflow.stepName': {\n values.stepName = decodedValue;\n break;\n }\n case 'workflow.stepIndex': {\n values.stepIndex = Number.parseInt(decodedValue, 10);\n break;\n }\n case 'workflow.totalSteps': {\n values.totalSteps = Number.parseInt(decodedValue, 10);\n break;\n }\n case 'workflow.priority': {\n values.priority = decodedValue as WorkflowBaggageValues['priority'];\n break;\n }\n case 'workflow.correlationId': {\n values.correlationId = decodedValue;\n break;\n }\n case 'workflow.parentWorkflowId': {\n values.parentWorkflowId = decodedValue;\n break;\n }\n case 'workflow.initiatedBy': {\n values.initiatedBy = decodedValue;\n break;\n }\n case 'workflow.startedAt': {\n values.startedAt = decodedValue;\n break;\n }\n }\n }\n\n return Object.keys(values).length > 0 ? values : null;\n}\n"]}