improvement(logging): capture pre-execution validation errors in logging session (#1124)

* improvement(pre-exec-errors): capture pre-execution validation errors in logging session

* fix param shape for schedules

* fix naming

apps/sim/app/api/schedules/execute/route.ts

@@ -474,8 +474,10 @@ export async function GET() {
                 })
 
                 await loggingSession.safeCompleteWithError({
-                  message: `Schedule execution failed before workflow started: ${earlyError.message}`,
-                  stackTrace: earlyError.stack,
+                  error: {
+                    message: `Schedule execution failed before workflow started: ${earlyError.message}`,
+                    stackTrace: earlyError.stack,
+                  },
                 })
               } catch (loggingError) {
                 logger.error(
@@ -591,8 +593,10 @@ export async function GET() {
               })
 
               await failureLoggingSession.safeCompleteWithError({
-                message: `Schedule execution failed: ${error.message}`,
-                stackTrace: error.stack,
+                error: {
+                  message: `Schedule execution failed: ${error.message}`,
+                  stackTrace: error.stack,
+                },
               })
             } catch (loggingError) {
               logger.error(

apps/sim/lib/logs/execution/logging-session.ts

@@ -7,7 +7,12 @@ import {
   createTriggerObject,
   loadWorkflowStateForExecution,
 } from '@/lib/logs/execution/logging-factory'
-import type { ExecutionEnvironment, ExecutionTrigger, WorkflowState } from '@/lib/logs/types'
+import type {
+  ExecutionEnvironment,
+  ExecutionTrigger,
+  TraceSpan,
+  WorkflowState,
+} from '@/lib/logs/types'
 
 const logger = createLogger('LoggingSession')
 
@@ -25,6 +30,15 @@ export interface SessionCompleteParams {
   traceSpans?: any[]
 }
 
+export interface SessionErrorCompleteParams {
+  endedAt?: string
+  totalDurationMs?: number
+  error?: {
+    message?: string
+    stackTrace?: string
+  }
+}
+
 export class LoggingSession {
   private workflowId: string
   private executionId: string
@@ -115,8 +129,14 @@ export class LoggingSession {
     }
   }
 
-  async completeWithError(error?: any): Promise<void> {
+  async completeWithError(params: SessionErrorCompleteParams = {}): Promise<void> {
     try {
+      const { endedAt, totalDurationMs, error } = params
+
+      const endTime = endedAt ? new Date(endedAt) : new Date()
+      const durationMs = typeof totalDurationMs === 'number' ? totalDurationMs : 0
+      const startTime = new Date(endTime.getTime() - Math.max(1, durationMs))
+
       const costSummary = {
         totalCost: BASE_EXECUTION_CHARGE,
         totalInputCost: 0,
@@ -129,13 +149,29 @@ export class LoggingSession {
         models: {},
       }
 
+      const message = error?.message || 'Execution failed before starting blocks'
+
+      const syntheticErrorSpan: TraceSpan[] = [
+        {
+          id: 'pre-execution-validation',
+          name: 'Workflow Error',
+          type: 'validation',
+          duration: Math.max(1, durationMs),
+          startTime: startTime.toISOString(),
+          endTime: endTime.toISOString(),
+          status: 'error',
+          children: [],
+          output: { error: message },
+        },
+      ]
+
       await executionLogger.completeWorkflowExecution({
         executionId: this.executionId,
-        endedAt: new Date().toISOString(),
-        totalDurationMs: 0,
+        endedAt: endTime.toISOString(),
+        totalDurationMs: Math.max(1, durationMs),
         costSummary,
-        finalOutput: null,
-        traceSpans: [],
+        finalOutput: { error: message },
+        traceSpans: syntheticErrorSpan,
       })
 
       if (this.requestId) {
@@ -170,7 +206,7 @@ export class LoggingSession {
     }
   }
 
-  async safeCompleteWithError(error?: any): Promise<void> {
+  async safeCompleteWithError(error?: SessionErrorCompleteParams): Promise<void> {
     try {
       await this.completeWithError(error)
     } catch (enhancedError) {