Migration Report - Camunda 7.x - 8.8 to 8.9 Migration Project Report

Camunda BPMN

8.9.0

Camunda SDK

8.5.0

Spring Boot

3.4.0

JDK

BPMN Processes

✅ Migrated

Source Nodes

✅ Parsed

Migrated Nodes

✅ Parsed

Delegates Referenced

✅ Found

Delegates in JAR

⚠️ 4 not in JAR

Spring Boot Workers

✅ Generated

Plain Java Workers

✅ Generated

Service Tasks

✅ Converted

User Tasks

⚠️ 0 No Forms

Script Tasks

⚠️ Need Workers

FEEL Expressions

✅ Converted

Forms

✅ Migrated

Critical/High Issues

🚨 Must Fix

📊 Complexity Distribution

Simple 0

Medium 2

Complex 1

Very Complex 0

Critical 0

Very Critical 0

Extreme Critical 0

📋 Executive Summary

📊

3 BPMN processes migrated successfully

☕

4 JavaDelegates referenced in BPMN → 0 found in JAR ⚠️ 4 missing

⚙️

0 Plain Java workers generated from available delegates

📝

5 Script Tasks across 1 processes

⚠️

5 critical/high and 0 medium issues

🎯

0 FEEL expressions converted from JUEL

📊 Process Complexity Distribution

BPMN File	Score	Process	Complexity	Nodes	Service	Script	Gateways	Events	Timer	Java
rocket-launch.bpmn	66	Rocket Launch 🚀	Complex	13	0	5	3	0	1	0
order-process.bpmn	33	Process 1	Medium	6	3	0	0	0	0	3
order-process-boundary-events.bpmn	54	Process 2	Medium	8	3	0	0	2	0	3

☕ Delegate to Worker Mapping

Java Delegate	Used In	Plain Java Worker	Spring Boot Worker
CAMUNDA		—	—
charge-payment	order-process.bpmn→Charge payment method, order-process-boundary-events.bpmn→Charge payment method	—	—
check-inventory	order-process.bpmn→Check inventory, order-process-boundary-events.bpmn→Check inventory	—	—
ship-items	order-process.bpmn→Ship items, order-process-boundary-events.bpmn→Ship items	—	—

Summary: 4 delegates referenced in BPMN → 0 found in JAR → 0 Spring Boot workers + 0 Plain Java workers generated | ⚠️ 4 delegate(s) missing from JAR: check-inventory, charge-payment, CAMUNDA, ship-items

🔵 Camunda 8.9 Special Migration Summary

Migration Pattern	Count	Affected Processes
Script Task → Job Worker	5	Rocket Launch 🚀, Rocket Launch 🚀, Rocket Launch 🚀 and 2 more...

📦 JAR Summary

Category	Count	Description
Plain Java Individual JARs	0	None generated
Spring Boot Individual JARs	0	None generated
Plain Java Group JAR	0	None generated
Spring Boot Group JAR	0	None generated
ScriptWorker Individual JARs	0	None generated
TOTAL JARs	0	All JAR files generated

Deployment Options: Microservice (0 JARs) | Monolith (Spring Boot: 0 JAR) | Monolith (Plain Java: 0 JAR)

🔄 Transformation Analysis - Actual BPMN Nodes

Note: All BPMN nodes are listed.

BPMN File Name	Score	Source Node	Source ID	Source Type	Migrated Node	Migrated ID	Migrated Type	Status
rocket-launch.bpmn	66	Launch sequence initiated	StartEvent_1	Start	Launch sequence initiated	StartEvent_1	Start	✅ Preserved
		Pre-flight check	Task_Preflight	Script Task	Pre-flight check	Task_Preflight	Script Task	✅ Preserved
		Systems go?	Gateway_Systems	Exclusive Gateway	Systems go?	Gateway_Systems	Exclusive Gateway	✅ Preserved
		Countdown T-10	Timer_Countdown	Intermediate Catch	Countdown T-10	Timer_Countdown	Intermediate Catch	✅ Preserved
		Abort mission	Task_Abort	Script Task	Abort mission	Task_Abort	Script Task	✅ Preserved
		Mission scrubbed ❌	EndEvent_Abort	End	Mission scrubbed ❌	EndEvent_Abort	End	✅ Preserved
			Gateway_ParSplit	Parallel Gateway		Gateway_ParSplit	Parallel Gateway	✅ Preserved
		Burn stage 1	Task_Engines	Script Task	Burn stage 1	Task_Engines	Script Task	✅ Preserved
		Run experiments	Task_Experiments	Script Task	Run experiments	Task_Experiments	Script Task	✅ Preserved
			Gateway_ParMerge	Parallel Gateway		Gateway_ParMerge	Parallel Gateway	✅ Preserved
		Mission report	Task_Report	Script Task	Mission report	Task_Report	Script Task	✅ Preserved
		Mission complete! 🎉	EndEvent_Success	End	Mission complete! 🎉	EndEvent_Success	End	✅ Preserved
		Plot destination	Activity_0sb885k	Business Rule Task	Plot destination	Activity_0sb885k	Business Rule Task	✅ Preserved
order-process.bpmn	33	Order received	StartEvent_1	Start	Order received	StartEvent_1	Start	✅ Preserved
		Order shipped	Event_0f9sbko	End	Order shipped	Event_0f9sbko	End	✅ Preserved
		Check inventory	Activity_0tw2fu0	Service Task	Check inventory	Activity_0tw2fu0	Service Task	✅ Preserved
		Charge payment method	Activity_1ppsbgi	Service Task	Charge payment method	Activity_1ppsbgi	Service Task	✅ Preserved
		Ship items	Activity_08pg6im	Service Task	Ship items	Activity_08pg6im	Service Task	✅ Preserved
			TextAnnotation_11gkedc	textAnnotation		TextAnnotation_11gkedc	textAnnotation	✅ Preserved
order-process-boundary-events.bpmn	54	Order received	StartEvent_1	Start	Order received	StartEvent_1	Start	✅ Preserved
		Order shipped	Event_0f9sbko	End	Order shipped	Event_0f9sbko	End	✅ Preserved
		Check inventory	Activity_0tw2fu0	Service Task	Check inventory	Activity_0tw2fu0	Service Task	✅ Preserved
		Charge payment method	Activity_1ppsbgi	Service Task	Charge payment method	Activity_1ppsbgi	Service Task	✅ Preserved
		Ship items	Activity_08pg6im	Service Task	Ship items	Activity_08pg6im	Service Task	✅ Preserved
		Item not in stock	Event_1g3k0ac	Boundary Event	Item not in stock	Event_1g3k0ac	Boundary Event	✅ Preserved
		Order not shipped	Event_17fdijx	End	Order not shipped	Event_17fdijx	End	✅ Preserved
			Event_0arm3xk	Boundary Event		Event_0arm3xk	Boundary Event	✅ Preserved
TOTAL NODES ANALYZED:								27
Source Nodes: 27 → Migrated Nodes: 27								Diff: 0

📄 rocket-launch.bpmn ⚠️ With Warnings Complex

Rocket Launch 🚀 Nodes: 13 Transforms: 5 Warnings: 5 Special: 5 Delegates: 0 ▼

Process ID: rocket-launch | Version: Camunda 8.9.0 Complexity: Complex Process Name: Rocket Launch 🚀

🔵 Special Migrations (Camunda 8.9)

📌 Script Task → Job Worker

Node: Pre-flight check (Task_Preflight)
Original: Script Tasks with JavaScript/Groovy/Python are NOT supported natively in Camunda 8.9
Converted: Converted to Service Task with Job Worker (zeebe:taskDefinition type="script")
Reason: Camunda 8.9 only supports FEEL scripts natively. Non-FEEL scripts must be extracted to Job Workers.
Recommendation: Extract script logic to a Zeebe Job Worker or convert to FEEL expression
Camunda 8 Way: FEEL expressions for simple logic, Job Workers for complex logic
Status: Completed - Needs Worker
Script Language: javascript

📌 Script Task → Job Worker

Node: Abort mission (Task_Abort)
Original: Script Tasks with JavaScript/Groovy/Python are NOT supported natively in Camunda 8.9
Converted: Converted to Service Task with Job Worker (zeebe:taskDefinition type="script")
Reason: Camunda 8.9 only supports FEEL scripts natively. Non-FEEL scripts must be extracted to Job Workers.
Recommendation: Extract script logic to a Zeebe Job Worker or convert to FEEL expression
Camunda 8 Way: FEEL expressions for simple logic, Job Workers for complex logic
Status: Completed - Needs Worker
Script Language: javascript

📌 Script Task → Job Worker

Node: Burn stage 1 (Task_Engines)
Original: Script Tasks with JavaScript/Groovy/Python are NOT supported natively in Camunda 8.9
Converted: Converted to Service Task with Job Worker (zeebe:taskDefinition type="script")
Reason: Camunda 8.9 only supports FEEL scripts natively. Non-FEEL scripts must be extracted to Job Workers.
Recommendation: Extract script logic to a Zeebe Job Worker or convert to FEEL expression
Camunda 8 Way: FEEL expressions for simple logic, Job Workers for complex logic
Status: Completed - Needs Worker
Script Language: javascript

📌 Script Task → Job Worker

Node: Run experiments (Task_Experiments)
Original: Script Tasks with JavaScript/Groovy/Python are NOT supported natively in Camunda 8.9
Converted: Converted to Service Task with Job Worker (zeebe:taskDefinition type="script")
Reason: Camunda 8.9 only supports FEEL scripts natively. Non-FEEL scripts must be extracted to Job Workers.
Recommendation: Extract script logic to a Zeebe Job Worker or convert to FEEL expression
Camunda 8 Way: FEEL expressions for simple logic, Job Workers for complex logic
Status: Completed - Needs Worker
Script Language: javascript

📌 Script Task → Job Worker

Node: Mission report (Task_Report)
Original: Script Tasks with JavaScript/Groovy/Python are NOT supported natively in Camunda 8.9
Converted: Converted to Service Task with Job Worker (zeebe:taskDefinition type="script")
Reason: Camunda 8.9 only supports FEEL scripts natively. Non-FEEL scripts must be extracted to Job Workers.
Recommendation: Extract script logic to a Zeebe Job Worker or convert to FEEL expression
Camunda 8 Way: FEEL expressions for simple logic, Job Workers for complex logic
Status: Completed - Needs Worker
Script Language: javascript

✅ Improvement Suggestions

[CRITICAL] Script Task 'Pre-flight check' needs Job Worker extraction
💡 Create a Zeebe Job Worker for the script logic
🏗️ Camunda 8 Way: Implement as @JobWorker in Spring Boot or plain Java worker

[CRITICAL] Script Task 'Abort mission' needs Job Worker extraction
💡 Create a Zeebe Job Worker for the script logic
🏗️ Camunda 8 Way: Implement as @JobWorker in Spring Boot or plain Java worker

[CRITICAL] Script Task 'Burn stage 1' needs Job Worker extraction
💡 Create a Zeebe Job Worker for the script logic
🏗️ Camunda 8 Way: Implement as @JobWorker in Spring Boot or plain Java worker

[CRITICAL] Script Task 'Run experiments' needs Job Worker extraction
💡 Create a Zeebe Job Worker for the script logic
🏗️ Camunda 8 Way: Implement as @JobWorker in Spring Boot or plain Java worker

[CRITICAL] Script Task 'Mission report' needs Job Worker extraction
💡 Create a Zeebe Job Worker for the script logic
🏗️ Camunda 8 Way: Implement as @JobWorker in Spring Boot or plain Java worker

📋 Source BPMN

✅ Converted BPMN

🔵 Transformations in this BPMN

Script Task 'Pre-flight check' → Job Worker (language: javascript) → Converted
Reason: Auto-converted for Camunda 8.9 compatibility

Script Task 'Abort mission' → Job Worker (language: javascript) → Converted
Reason: Auto-converted for Camunda 8.9 compatibility

Script Task 'Burn stage 1' → Job Worker (language: javascript) → Converted
Reason: Auto-converted for Camunda 8.9 compatibility

Script Task 'Run experiments' → Job Worker (language: javascript) → Converted
Reason: Auto-converted for Camunda 8.9 compatibility

Script Task 'Mission report' → Job Worker (language: javascript) → Converted
Reason: Auto-converted for Camunda 8.9 compatibility

#	Parent	Node ID	Node Name	Original Type	Converted Type	Status
1	-- (Start)	StartEvent_1	Launch sequence initiated	Start	Start	✅ Success
2	-- (Start)	Task_Preflight	Pre-flight check	Script Task	Script Task	✅ Success
3	-- (Start)	Gateway_Systems	Systems go?	Exclusive Gateway	Exclusive Gateway	✅ Success
4	-- (Start)	Timer_Countdown	Countdown T-10	Intermediate Catch	Intermediate Catch	✅ Success
5	-- (Start)	Task_Abort	Abort mission	Script Task	Script Task	✅ Success
6	-- (Start)	EndEvent_Abort	Mission scrubbed ❌	End	End	✅ Success
7	-- (Start)	Gateway_ParSplit		Parallel Gateway	Parallel Gateway	✅ Success
8	-- (Start)	Task_Engines	Burn stage 1	Script Task	Script Task	✅ Success
9	-- (Start)	Task_Experiments	Run experiments	Script Task	Script Task	✅ Success
10	-- (Start)	Gateway_ParMerge		Parallel Gateway	Parallel Gateway	✅ Success
11	-- (Start)	Task_Report	Mission report	Script Task	Script Task	✅ Success
12	-- (Start)	EndEvent_Success	Mission complete! 🎉	End	End	✅ Success
13	-- (Start)	Activity_0sb885k	Plot destination	Business Rule Task	Business Rule Task	✅ Success

⚠️ Warnings - Action Required

📌 Unknown

Issue: Script Task 'Pre-flight check' uses javascript