v0.5.111: non-polling webhook execs off trigger.dev, gmail subject headers, webhook trigger configs

apps/sim/app/api/webhooks/route.ts

@@ -367,9 +367,7 @@ export async function POST(request: NextRequest) {
             )
           }
 
-          // Configure each new webhook (for providers that need configuration)
-          const pollingProviders = ['gmail', 'outlook']
-          const needsConfiguration = pollingProviders.includes(provider)
+          const needsConfiguration = provider === 'gmail' || provider === 'outlook'
 
           if (needsConfiguration) {
             const configureFunc =

apps/sim/blocks/blocks/generic_webhook.ts

@@ -18,6 +18,7 @@ export const GenericWebhookBlock: BlockConfig = {
   bestPractices: `
   - You can test the webhook by sending a request to the webhook URL. E.g. depending on authorization:  curl -X POST http://localhost:3000/api/webhooks/trigger/d8abcf0d-1ee5-4b77-bb07-b1e8142ea4e9 -H "Content-Type: application/json" -H "X-Sim-Secret: 1234" -d '{"message": "Test webhook trigger", "data": {"key": "v"}}'
   - Continuing example above, the body can be accessed in downstream block using dot notation. E.g. <webhook1.message> and <webhook1.data.key>
+  - To deduplicate incoming events, set the Deduplication Field to a dot-notation path of a unique field in the payload (e.g. "event.id"). Duplicate values within 7 days will be skipped.
   - Only use when there's no existing integration for the service with triggerAllowed flag set to true.
   `,
   subBlocks: [...getTrigger('generic_webhook').subBlocks],

apps/sim/executor/handlers/trigger/trigger-handler.ts

@@ -22,7 +22,7 @@ export class TriggerBlockHandler implements BlockHandler {
     }
 
     const existingState = ctx.blockStates.get(block.id)
-    if (existingState?.output && Object.keys(existingState.output).length > 0) {
+    if (existingState?.output) {
       return existingState.output
     }
 

apps/sim/lib/core/async-jobs/config.ts

@@ -7,6 +7,7 @@ const logger = createLogger('AsyncJobsConfig')
 
 let cachedBackend: JobQueueBackend | null = null
 let cachedBackendType: AsyncBackendType | null = null
+let cachedInlineBackend: JobQueueBackend | null = null
 
 /**
  * Determines which async backend to use based on environment configuration.
@@ -71,6 +72,31 @@ export function getCurrentBackendType(): AsyncBackendType | null {
   return cachedBackendType
 }
 
+/**
+ * Gets a job queue backend that bypasses Trigger.dev (Redis -> Database).
+ * Used for non-polling webhooks that should always execute inline.
+ */
+export async function getInlineJobQueue(): Promise<JobQueueBackend> {
+  if (cachedInlineBackend) {
+    return cachedInlineBackend
+  }
+
+  const redis = getRedisClient()
+  let type: string
+  if (redis) {
+    const { RedisJobQueue } = await import('@/lib/core/async-jobs/backends/redis')
+    cachedInlineBackend = new RedisJobQueue(redis)
+    type = 'redis'
+  } else {
+    const { DatabaseJobQueue } = await import('@/lib/core/async-jobs/backends/database')
+    cachedInlineBackend = new DatabaseJobQueue()
+    type = 'database'
+  }
+
+  logger.info(`Inline job backend initialized: ${type}`)
+  return cachedInlineBackend
+}
+
 /**
  * Checks if jobs should be executed inline (fire-and-forget).
  * For Redis/DB backends, we execute inline. Trigger.dev handles execution itself.
@@ -85,4 +111,5 @@ export function shouldExecuteInline(): boolean {
 export function resetJobQueueCache(): void {
   cachedBackend = null
   cachedBackendType = null
+  cachedInlineBackend = null
 }

apps/sim/lib/core/async-jobs/index.ts

@@ -1,6 +1,7 @@
 export {
   getAsyncBackendType,
   getCurrentBackendType,
+  getInlineJobQueue,
   getJobQueue,
   resetJobQueueCache,
   shouldExecuteInline,

apps/sim/lib/core/idempotency/service.ts

@@ -413,6 +413,7 @@ export class IdempotencyService {
       : undefined
 
     const webhookIdHeader =
+      normalizedHeaders?.['x-sim-idempotency-key'] ||
       normalizedHeaders?.['webhook-id'] ||
       normalizedHeaders?.['x-webhook-id'] ||
       normalizedHeaders?.['x-shopify-webhook-id'] ||

apps/sim/lib/webhooks/processor.ts

@@ -5,7 +5,7 @@ import { and, eq, isNull, or } from 'drizzle-orm'
 import { type NextRequest, NextResponse } from 'next/server'
 import { v4 as uuidv4 } from 'uuid'
 import { checkEnterprisePlan, checkTeamPlan } from '@/lib/billing/subscriptions/utils'
-import { getJobQueue, shouldExecuteInline } from '@/lib/core/async-jobs'
+import { getInlineJobQueue, getJobQueue, shouldExecuteInline } from '@/lib/core/async-jobs'
 import { isProd } from '@/lib/core/config/feature-flags'
 import { safeCompare } from '@/lib/core/security/encryption'
 import { getEffectiveDecryptedEnv } from '@/lib/environment/utils'
@@ -29,6 +29,7 @@ import {
 import { executeWebhookJob } from '@/background/webhook-execution'
 import { resolveEnvVarReferences } from '@/executor/utils/reference-validation'
 import { isConfluencePayloadMatch } from '@/triggers/confluence/utils'
+import { isPollingWebhookProvider } from '@/triggers/constants'
 import { isGitHubEventMatch } from '@/triggers/github/utils'
 import { isHubSpotContactEventMatch } from '@/triggers/hubspot/utils'
 import { isJiraEventMatch } from '@/triggers/jira/utils'
@@ -1049,7 +1050,7 @@ export async function queueWebhookExecution(
       }
     }
 
-    const headers = Object.fromEntries(request.headers.entries())
+    const { 'x-sim-idempotency-key': _, ...headers } = Object.fromEntries(request.headers.entries())
 
     // For Microsoft Teams Graph notifications, extract unique identifiers for idempotency
     if (
@@ -1067,9 +1068,20 @@ export async function queueWebhookExecution(
       }
     }
 
-    // Extract credentialId from webhook config
-    // Note: Each webhook now has its own credentialId (credential sets are fanned out at save time)
     const providerConfig = (foundWebhook.providerConfig as Record<string, any>) || {}
+
+    if (foundWebhook.provider === 'generic') {
+      const idempotencyField = providerConfig.idempotencyField as string | undefined
+      if (idempotencyField && body) {
+        const value = idempotencyField
+          .split('.')
+          .reduce((acc: any, key: string) => acc?.[key], body)
+        if (value !== undefined && value !== null && typeof value !== 'object') {
+          headers['x-sim-idempotency-key'] = String(value)
+        }
+      }
+    }
+
     const credentialId = providerConfig.credentialId as string | undefined
 
     // credentialSetId is a direct field on webhook table, not in providerConfig
@@ -1105,15 +1117,24 @@ export async function queueWebhookExecution(
       ...(credentialId ? { credentialId } : {}),
     }
 
-    const jobQueue = await getJobQueue()
-    const jobId = await jobQueue.enqueue('webhook-execution', payload, {
-      metadata: { workflowId: foundWorkflow.id, userId: actorUserId },
-    })
-    logger.info(
-      `[${options.requestId}] Queued webhook execution task ${jobId} for ${foundWebhook.provider} webhook`
-    )
+    const isPolling = isPollingWebhookProvider(payload.provider)
 
-    if (shouldExecuteInline()) {
+    if (isPolling && !shouldExecuteInline()) {
+      const jobQueue = await getJobQueue()
+      const jobId = await jobQueue.enqueue('webhook-execution', payload, {
+        metadata: { workflowId: foundWorkflow.id, userId: actorUserId },
+      })
+      logger.info(
+        `[${options.requestId}] Queued polling webhook execution task ${jobId} for ${foundWebhook.provider} webhook via job queue`
+      )
+    } else {
+      const jobQueue = await getInlineJobQueue()
+      const jobId = await jobQueue.enqueue('webhook-execution', payload, {
+        metadata: { workflowId: foundWorkflow.id, userId: actorUserId },
+      })
+      logger.info(
+        `[${options.requestId}] Executing ${foundWebhook.provider} webhook ${jobId} inline`
+      )
       void (async () => {
         try {
           await jobQueue.startJob(jobId)
@@ -1193,6 +1214,26 @@ export async function queueWebhookExecution(
       })
     }
 
+    if (foundWebhook.provider === 'generic' && providerConfig.responseMode === 'custom') {
+      const rawCode = Number(providerConfig.responseStatusCode) || 200
+      const statusCode = rawCode >= 100 && rawCode <= 599 ? rawCode : 200
+      const responseBody = (providerConfig.responseBody as string | undefined)?.trim()
+
+      if (!responseBody) {
+        return new NextResponse(null, { status: statusCode })
+      }
+
+      try {
+        const parsed = JSON.parse(responseBody)
+        return NextResponse.json(parsed, { status: statusCode })
+      } catch {
+        return new NextResponse(responseBody, {
+          status: statusCode,
+          headers: { 'Content-Type': 'text/plain' },
+        })
+      }
+    }
+
     return NextResponse.json({ message: 'Webhook processed' })
   } catch (error: any) {
     logger.error(`[${options.requestId}] Failed to queue webhook execution:`, error)

apps/sim/lib/webhooks/utils.server.ts

@@ -19,6 +19,7 @@ import {
   refreshAccessTokenIfNeeded,
   resolveOAuthAccountId,
 } from '@/app/api/auth/oauth/utils'
+import { isPollingWebhookProvider } from '@/triggers/constants'
 
 const logger = createLogger('WebhookUtils')
 
@@ -2222,10 +2223,7 @@ export async function syncWebhooksForCredentialSet(params: {
     `[${requestId}] Syncing webhooks for credential set ${credentialSetId}, provider ${provider}`
   )
 
-  // Polling providers get unique paths per credential (for independent state)
-  // External webhook providers share the same path (external service sends to one URL)
-  const pollingProviders = ['gmail', 'outlook', 'rss', 'imap']
-  const useUniquePaths = pollingProviders.includes(provider)
+  const useUniquePaths = isPollingWebhookProvider(provider)
 
   const credentials = await getCredentialsForCredentialSet(credentialSetId, oauthProviderId)
 

apps/sim/lib/workflows/comparison/compare.test.ts

@@ -433,7 +433,7 @@ describe('hasWorkflowChanged', () => {
       expect(hasWorkflowChanged(state1, state2)).toBe(true)
     })
 
-    it.concurrent('should detect subBlock type changes', () => {
+    it.concurrent('should ignore subBlock type changes', () => {
       const state1 = createWorkflowState({
         blocks: {
           block1: createBlock('block1', {
@@ -448,7 +448,7 @@ describe('hasWorkflowChanged', () => {
           }),
         },
       })
-      expect(hasWorkflowChanged(state1, state2)).toBe(true)
+      expect(hasWorkflowChanged(state1, state2)).toBe(false)
     })
 
     it.concurrent('should handle null/undefined subBlock values consistently', () => {

apps/sim/lib/workflows/comparison/normalize.ts

@@ -496,7 +496,14 @@ export function normalizeSubBlockValue(subBlockId: string, value: unknown): unkn
  * @returns SubBlock fields excluding value and is_diff
  */
 export function extractSubBlockRest(subBlock: Record<string, unknown>): Record<string, unknown> {
-  const { value: _v, is_diff: _sd, ...rest } = subBlock as SubBlockWithDiffMarker
+  const {
+    value: _v,
+    is_diff: _sd,
+    type: _type,
+    ...rest
+  } = subBlock as SubBlockWithDiffMarker & {
+    type?: unknown
+  }
   return rest
 }
 

apps/sim/tools/gmail/utils.test.ts

@@ -0,0 +1,36 @@
+/**
+ * @vitest-environment node
+ */
+import { describe, expect, it } from 'vitest'
+import { encodeRfc2047 } from './utils'
+
+describe('encodeRfc2047', () => {
+  it('returns ASCII text unchanged', () => {
+    expect(encodeRfc2047('Simple ASCII Subject')).toBe('Simple ASCII Subject')
+  })
+
+  it('returns empty string unchanged', () => {
+    expect(encodeRfc2047('')).toBe('')
+  })
+
+  it('encodes emojis as RFC 2047 base64', () => {
+    const result = encodeRfc2047('Time to Stretch! 🧘')
+    expect(result).toBe('=?UTF-8?B?VGltZSB0byBTdHJldGNoISDwn6eY?=')
+  })
+
+  it('round-trips non-ASCII subjects correctly', () => {
+    const subjects = ['Hello 世界', 'Café résumé', '🎉🎊🎈 Party!', '今週のミーティング']
+    for (const subject of subjects) {
+      const encoded = encodeRfc2047(subject)
+      const match = encoded.match(/^=\?UTF-8\?B\?(.+)\?=$/)
+      expect(match).not.toBeNull()
+      const decoded = Buffer.from(match![1], 'base64').toString('utf-8')
+      expect(decoded).toBe(subject)
+    }
+  })
+
+  it('does not double-encode already-encoded subjects', () => {
+    const alreadyEncoded = '=?UTF-8?B?VGltZSB0byBTdHJldGNoISDwn6eY?='
+    expect(encodeRfc2047(alreadyEncoded)).toBe(alreadyEncoded)
+  })
+})

apps/sim/tools/gmail/utils.ts

@@ -294,6 +294,19 @@ function generateBoundary(): string {
   return `----=_Part_${Date.now()}_${Math.random().toString(36).substring(2, 15)}`
 }
 
+/**
+ * Encode a header value using RFC 2047 Base64 encoding if it contains non-ASCII characters.
+ * This matches Google's own Gmail API sample: `=?utf-8?B?${Buffer.from(subject).toString('base64')}?=`
+ * @see https://github.com/googleapis/google-api-nodejs-client/blob/main/samples/gmail/send.js
+ */
+export function encodeRfc2047(value: string): string {
+  // eslint-disable-next-line no-control-regex
+  if (/^[\x00-\x7F]*$/.test(value)) {
+    return value
+  }
+  return `=?UTF-8?B?${Buffer.from(value, 'utf-8').toString('base64')}?=`
+}
+
 /**
  * Encode string or buffer to base64url format (URL-safe base64)
  * Gmail API requires base64url encoding for the raw message field
@@ -333,7 +346,7 @@ export function buildSimpleEmailMessage(params: {
     emailHeaders.push(`Bcc: ${bcc}`)
   }
 
-  emailHeaders.push(`Subject: ${subject || ''}`)
+  emailHeaders.push(`Subject: ${encodeRfc2047(subject || '')}`)
 
   if (inReplyTo) {
     emailHeaders.push(`In-Reply-To: ${inReplyTo}`)
@@ -380,7 +393,7 @@ export function buildMimeMessage(params: BuildMimeMessageParams): string {
   if (bcc) {
     messageParts.push(`Bcc: ${bcc}`)
   }
-  messageParts.push(`Subject: ${subject || ''}`)
+  messageParts.push(`Subject: ${encodeRfc2047(subject || '')}`)
 
   if (inReplyTo) {
     messageParts.push(`In-Reply-To: ${inReplyTo}`)

apps/sim/triggers/constants.test.ts

@@ -0,0 +1,41 @@
+/**
+ * @vitest-environment node
+ */
+import { describe, expect, it } from 'vitest'
+import { POLLING_PROVIDERS } from '@/triggers/constants'
+import { TRIGGER_REGISTRY } from '@/triggers/registry'
+
+describe('POLLING_PROVIDERS sync with TriggerConfig.polling', () => {
+  it('matches every trigger with polling: true in the registry', () => {
+    const registryPollingProviders = new Set(
+      Object.values(TRIGGER_REGISTRY)
+        .filter((t) => t.polling === true)
+        .map((t) => t.provider)
+    )
+
+    expect(POLLING_PROVIDERS).toEqual(registryPollingProviders)
+  })
+
+  it('no trigger with polling: true is missing from POLLING_PROVIDERS', () => {
+    const missing: string[] = []
+    for (const trigger of Object.values(TRIGGER_REGISTRY)) {
+      if (trigger.polling && !POLLING_PROVIDERS.has(trigger.provider)) {
+        missing.push(`${trigger.id} (provider: ${trigger.provider})`)
+      }
+    }
+    expect(missing, `Triggers with polling: true missing from POLLING_PROVIDERS`).toEqual([])
+  })
+
+  it('no POLLING_PROVIDERS entry lacks a polling: true trigger in the registry', () => {
+    const extra: string[] = []
+    for (const provider of POLLING_PROVIDERS) {
+      const hasTrigger = Object.values(TRIGGER_REGISTRY).some(
+        (t) => t.provider === provider && t.polling === true
+      )
+      if (!hasTrigger) {
+        extra.push(provider)
+      }
+    }
+    expect(extra, `POLLING_PROVIDERS entries with no matching polling trigger`).toEqual([])
+  })
+})

apps/sim/triggers/constants.ts

@@ -35,3 +35,15 @@ export const TRIGGER_RUNTIME_SUBBLOCK_IDS: string[] = [
  * This prevents runaway errors from continuously executing failing workflows.
  */
 export const MAX_CONSECUTIVE_FAILURES = 100
+
+/**
+ * Set of webhook provider names that use polling-based triggers.
+ * Mirrors the `polling: true` flag on TriggerConfig entries.
+ * Used to route execution: polling providers use the full job queue
+ * (Trigger.dev), non-polling providers execute inline.
+ */
+export const POLLING_PROVIDERS = new Set(['gmail', 'outlook', 'rss', 'imap'])
+
+export function isPollingWebhookProvider(provider: string): boolean {
+  return POLLING_PROVIDERS.has(provider)
+}