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

Complete migration analysis
📅 2026-07-06 15:23:07
Camunda BPMN
8.9.0
Camunda SDK
8.5.0
Spring Boot
3.4.0
JDK
21
1
BPMN Processes
✅ Migrated
23
Source Nodes
✅ Parsed
23
Migrated Nodes
✅ Parsed
1
Delegates Referenced
✅ Found
0
Delegates in JAR
⚠️ 1 not in JAR
0
Spring Boot Workers
✅ Generated
0
Plain Java Workers
✅ Generated
2
Service Tasks
✅ Converted
0
User Tasks
⚠️ 0 No Forms
1
Script Tasks
⚠️ Need Workers
9
FEEL Expressions
✅ Converted
0
Forms
✅ Migrated
3
Critical/High Issues
🚨 Must Fix

📊 Complexity Distribution

Simple 0
Medium 0
Complex 0
Very Complex 1
Critical 0
Very Critical 0
Extreme Critical 0

📋 Executive Summary

📊
1 BPMN processes migrated successfully
☕
1 JavaDelegates referenced in BPMN → 0 found in JAR ⚠️ 1 missing
⚙️
0 Plain Java workers generated from available delegates
📝
1 Script Tasks across 1 processes
⚠️
3 critical/high and 0 medium issues
🎯
9 FEEL expressions converted from JUEL

📊 Process Complexity Distribution

BPMN File Score Process Complexity Nodes Service Script User Gateways Events Timer Cancel Comp Cond Trans Java
get-up.bpmn 112 Get Up Very Complex 23 2 1 0 10 1 5 0 0 0 0 0

☕ Delegate to Worker Mapping

Java Delegate Used In Plain Java Worker Spring Boot Worker
CAMUNDA — —
Summary: 1 delegates referenced in BPMN → 0 found in JAR → 0 Spring Boot workers + 0 Plain Java workers generated | ⚠️ 1 delegate(s) missing from JAR: CAMUNDA

🔵 Camunda 8.9 Special Migration Summary

Migration Pattern Count Affected Processes
Script Task → Job Worker 1 Get Up

📦 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
get-up.bpmn 112 Kids need to get up for school KidsNeedToGetUpForSchoolStartEvent Start Kids need to get up for school KidsNeedToGetUpForSchoolStartEvent Start ✅ Preserved
Gateway_09a2iuf Parallel Gateway Gateway_09a2iuf Parallel Gateway ✅ Preserved
Gateway_1a1rrop Parallel Gateway Gateway_1a1rrop Parallel Gateway ✅ Preserved
Wait 5 minutes Wait5MinutesEvent1 Intermediate Catch Wait 5 minutes Wait5MinutesEvent1 Intermediate Catch ✅ Preserved
Kids are at school KidsAreAtSchoolEndEvent End Kids are at school KidsAreAtSchoolEndEvent End ✅ Preserved
Get 'em fed GetEmFedSubProcess Sub Process Get 'em fed GetEmFedSubProcess Sub Process ✅ Preserved
Kids are hangry KidsAreHangryStartEvent Start Kids are hangry KidsAreHangryStartEvent Start ✅ Preserved
Tell kids to get up TellKidsToGetUpTask Service Task Tell kids to get up TellKidsToGetUpTask Service Task ✅ Preserved
Wait 15 minutes Wait15MinutesEvent Intermediate Catch Wait 15 minutes Wait15MinutesEvent Intermediate Catch ✅ Preserved
Gateway_100oayt Parallel Gateway Gateway_100oayt Parallel Gateway ✅ Preserved
Gateway_0elxfmr Parallel Gateway Gateway_0elxfmr Parallel Gateway ✅ Preserved
Check current progress CheckCurrentProgressTask Service Task Check current progress CheckCurrentProgressTask Service Task ✅ Preserved
Current progress? CurrentProgressGateway Exclusive Gateway Current progress? CurrentProgressGateway Exclusive Gateway ✅ Preserved
Wait 5 minutes Wait5MinutesEvent Intermediate Catch Wait 5 minutes Wait5MinutesEvent Intermediate Catch ✅ Preserved
Gateway_0fop05q Parallel Gateway Gateway_0fop05q Parallel Gateway ✅ Preserved
Wait 15 minutes Wait15MinutesEvent1 Intermediate Catch Wait 15 minutes Wait15MinutesEvent1 Intermediate Catch ✅ Preserved
Gateway_1po0o0g Parallel Gateway Gateway_1po0o0g Parallel Gateway ✅ Preserved
Kids are fed KidsAreFedEndEvent End Kids are fed KidsAreFedEndEvent End ✅ Preserved
Breakfast already prepared? BreakfastAlreadyPreparedGateway Exclusive Gateway Breakfast already prepared? BreakfastAlreadyPreparedGateway Exclusive Gateway ✅ Preserved
Gateway_1puef2j Exclusive Gateway Gateway_1puef2j Exclusive Gateway ✅ Preserved
Prepare breakfast PrepareBreakfastTask Script Task Prepare breakfast PrepareBreakfastTask Script Task ✅ Preserved
Running late RunningLateBoundaryEvent Boundary Event Running late RunningLateBoundaryEvent Boundary Event ✅ Preserved
Gateway_197ueec Exclusive Gateway Gateway_197ueec Exclusive Gateway ✅ Preserved
TOTAL NODES ANALYZED: 23
Source Nodes: 23 → Migrated Nodes: 23 Diff: 0
✅ Preserved  |  🔄 Changed  |  🔵 Transformed  |  🟠 Review Required  |  🔴 Verify Required  |  ❌ Removed  |  ✅ New Node Added
📄 get-up.bpmn ⚠️ With Warnings Very Complex
Get Up Nodes: 23 Transforms: 1 Warnings: 3 Special: 1 Delegates: 0 ▼
Process ID: GetUpProcess  |  Version: Camunda 8.9.0 Complexity: Very Complex Process Name: Get Up
🔵 Special Migrations (Camunda 8.9)
📌 Script Task → Job Worker
Node: Prepare breakfast (PrepareBreakfastTask)
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 'Prepare breakfast' 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 'Prepare breakfast' → 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) KidsNeedToGetUpForSchoolStartEvent Kids need to get up for school Start Start ✅ Success
2 -- (Start) Gateway_09a2iuf Parallel Gateway Parallel Gateway ✅ Success
3 -- (Start) Gateway_1a1rrop Parallel Gateway Parallel Gateway ✅ Success
4 -- (Start) Wait5MinutesEvent1 Wait 5 minutes Intermediate Catch Intermediate Catch ✅ Success
5 -- (Start) KidsAreAtSchoolEndEvent Kids are at school End End ✅ Success
6 -- (Start) GetEmFedSubProcess Get 'em fed Sub Process Sub Process ✅ Success
7 -- (Start) KidsAreHangryStartEvent Kids are hangry Start Start ✅ Success
8 -- (Start) TellKidsToGetUpTask Tell kids to get up Service Task Service Task ✅ Success
9 -- (Start) Wait15MinutesEvent Wait 15 minutes Intermediate Catch Intermediate Catch ✅ Success
10 -- (Start) Gateway_100oayt Parallel Gateway Parallel Gateway ✅ Success
11 -- (Start) Gateway_0elxfmr Parallel Gateway Parallel Gateway ✅ Success
12 -- (Start) CheckCurrentProgressTask Check current progress Service Task Service Task ✅ Success
13 -- (Start) CurrentProgressGateway Current progress? Exclusive Gateway Exclusive Gateway ✅ Success
14 -- (Start) Wait5MinutesEvent Wait 5 minutes Intermediate Catch Intermediate Catch ✅ Success
15 -- (Start) Gateway_0fop05q Parallel Gateway Parallel Gateway ✅ Success
16 -- (Start) Wait15MinutesEvent1 Wait 15 minutes Intermediate Catch Intermediate Catch ✅ Success
17 -- (Start) Gateway_1po0o0g Parallel Gateway Parallel Gateway ✅ Success
18 -- (Start) KidsAreFedEndEvent Kids are fed End End ✅ Success
19 -- (Start) BreakfastAlreadyPreparedGateway Breakfast already prepared? Exclusive Gateway Exclusive Gateway ✅ Success
20 -- (Start) Gateway_1puef2j Exclusive Gateway Exclusive Gateway ✅ Success
21 -- (Start) PrepareBreakfastTask Prepare breakfast Script Task Script Task ✅ Success
22 -- (Start) RunningLateBoundaryEvent Running late Boundary Event Boundary Event ✅ Success
23 -- (Start) Gateway_197ueec Exclusive Gateway Exclusive Gateway ✅ Success
⚠️ Warnings - Action Required
📌 Unknown
Issue: Service Task 'Tell kids to get up' has no delegate
💡 Recommendation: Create a Zeebe Job Worker
📌 Unknown
Issue: Service Task 'Check current progress' has no delegate
💡 Recommendation: Create a Zeebe Job Worker
📌 Unknown
Issue: Script Task 'Prepare breakfast' uses javascript
💡 Recommendation: Extract to Job Worker or convert to FEEL

📚 Appendix: Reference Documentation

Camunda 8.9 Official Documentation

Specific Migration Guides

💡 All links are to the official Camunda 8.9 documentation. For the most up-to-date information, please refer to the official documentation.

Generated by Camunda Migration Tool

2026-07-06 15:23:07