![Cons / Pros
Clean architecture
Burden to implement
(especially for Camunda beginners)
Only features available in C7 & C8
Maintenance of adapters necessary
Decouple development
Centralized maintenance for
multiple projects
VanillaBP
Business processing at its best taste
[va·nil·la] … simple, plain, no frills
Not a „no change“ approach Simplify your software
& scale your teams easier](https://image.slidesharecdn.com/gainmorefreedomwhenmigratingfromcamunda7to8-230222083846-2eefad6e/85/Gain-more-freedom-when-migrating-from-Camunda-7-to-8-pdf-9-320.jpg)
![VanillaBP
Business processing at its best taste
[va·nil·la] … simple, plain, no frills
<dependency>
<groupId>org.camunda.community.vanillabp</groupId>
<artifactId>camunda7-spring-boot-adapter</artifactId>
</dependency>
<dependency>
<groupId>io.vanillabp</groupId>
<artifactId>spi-for-java</artifactId>
</dependency>
pom.xml
Interfaces, Enums &
Annotations
SPI Binding,
BPMN deployment
<dependency>
<groupId>org.camunda.community.vanillabp</groupId>
<artifactId>camunda8-spring-boot-adapter</artifactId>
</dependency>](https://image.slidesharecdn.com/gainmorefreedomwhenmigratingfromcamunda7to8-230222083846-2eefad6e/85/Gain-more-freedom-when-migrating-from-Camunda-7-to-8-pdf-10-320.jpg)
![VanillaBP
Business processing at its best taste
[va·nil·la] … simple, plain, no frills
pom.xml
c7/demo.bpmn
BPMN process ID: DemoWorkflow
Expression: ${processTask}
Condition: ${not success}
Expression: ${logError}
Expression: ${demoWorkflow.processTask}
Delegate-Expression: ${demoWorkflowProcessTask}
Expression: ${demoWorkflow.processTask}
Delegate-Expression: ${demoWorkflowProcessTask}](https://image.slidesharecdn.com/gainmorefreedomwhenmigratingfromcamunda7to8-230222083846-2eefad6e/85/Gain-more-freedom-when-migrating-from-Camunda-7-to-8-pdf-11-320.jpg)
![DemoAggregate.java
DemoWorkflow.java
1 @WorkflowService
2 @Service
3 public class DemoWorkflow {
4
5 }
VanillaBP
Business processing at its best taste
[va·nil·la] … simple, plain, no frills
ID: DemoWorkflow
Expression: ${processTask}
Condition: ${not success}
Expression: ${logError}
pom.xml
c7/demo.bpmn
1 @Entity @Table(name = "DEMO")
2 @Getter @Setter @AllArgsConstructor
3 public class DemoAggregate {
4 @Id @Column(name = "ID")
5 private String id;
6 @Column(name = "SUCCESS")
7 private boolean success;
8 }
start a workflow
1 @WorkflowService(workflowAggregateClass = DemoAggregate.class)
2 @Service
3 public class DemoWorkflow {
4
5 }
1 @WorkflowService(workflowAggregateClass = DemoAggregate.class)
2 @Service
3 public class DemoWorkflow {
4 @Autowired
5 private ProcessService<DemoAggregate> processService;
6
7 public void startDemo(String id) throws Exception {
8 var demo = new DemoAggregate(id, false);
10 processService.startWorkflow(demo);
11 }
12 }
1 @WorkflowService(workflowAggregateClass = DemoAggregate.class)
2 @Service
3 public class DemoWorkflow {
4 @Autowired
5 private ProcessService<DemoAggregate> processService;
6
7 public void startDemo(String id) throws Exception {
8 var demo = new DemoAggregate(id, false);
10 processService.startWorkflow(demo);
11 }
12
13 @WorkflowTask
14 public void processTask(DemoAggregate demo) {
15 demo.setSuccess(true);
16 }
17 }
1 @WorkflowService(workflowAggregateClass = DemoAggregate.class)
2 @Service
3 public class DemoWorkflow {
4 @Autowired
5 private ProcessService<DemoAggregate> processService;
6
7 public void startDemo(String id) throws Exception {
8 var demo = new DemoAggregate(id, false);
10 processService.startWorkflow(demo);
11 }
12
13 @WorkflowTask
14 public void processTask(DemoAggregate demo) {
15 demo.setSuccess(true);
16 }
17
18 @WorkflowTask(taskDefinition = "logError")
19 public void logErrorOnFailure() {
20 logger.info("error");
21 }
22 }](https://image.slidesharecdn.com/gainmorefreedomwhenmigratingfromcamunda7to8-230222083846-2eefad6e/85/Gain-more-freedom-when-migrating-from-Camunda-7-to-8-pdf-12-320.jpg)
![DemoAggregate.java
DemoWorkflow.java
VanillaBP
Business processing at its best taste
[va·nil·la] … simple, plain, no frills
pom.xml
Caused by: java.lang.IllegalStateException: No Spring Data repository defined for demo.DemoAggregate
at io.vanillabp.springboot.utils.JpaSpringDataUtil.getRepository(JpaSpringDataUtil.java:62)
Validation on booting the application
1 @Repository
2 public interface DemoAggregateRepository
3 extends JpaRepository<DemoAggregate, String> {
4
5 }
DemoAggregateRepository.java
Caused by: java.lang.RuntimeException: No public method annotated with @WorkflowTask is matching
task having task-definition 'processTask' of process 'DemoWorkflow'. Tested for:
at io.vanillabp.springboot.adapter.TaskWiringBase.wireTask(TaskWiringBase.java:199)
Caused by: java.lang.RuntimeException: You need to autowire
'io.vanillabp.spi.process.ProcessService<demo.DemoAggregate>' in your code to be able to start
workflows!
at io.vanillabp.camunda7.wiring.Camunda7TaskWiring.lambda$1(Camunda7TaskWiring.java:81)
c7/demo.bpmn](https://image.slidesharecdn.com/gainmorefreedomwhenmigratingfromcamunda7to8-230222083846-2eefad6e/85/Gain-more-freedom-when-migrating-from-Camunda-7-to-8-pdf-13-320.jpg)
![DemoAggregate.java
DemoWorkflow.java
VanillaBP
Business processing at its best taste
[va·nil·la] … simple, plain, no frills
pom.xml
DemoAggregateRepository.java
c7/demo.bpmn
Task-definition: processTask
Condition: =not(success)
Task-definition: logError
c7/demo.bpmn
Expression: ${processTask}
Condition: ${not success}
Expression: ${logError}
Point to directory „c8/“ instead of „c7/“ in Spring config
Switch the Maven dependency to „camunda8-spring-boot-adapter“
c8/demo.bpmn
BPMN process ID: DemoWorkflow](https://image.slidesharecdn.com/gainmorefreedomwhenmigratingfromcamunda7to8-230222083846-2eefad6e/85/Gain-more-freedom-when-migrating-from-Camunda-7-to-8-pdf-14-320.jpg)
![VanillaBP
Business processing at its best taste
[va·nil·la] … simple, plain, no frills
https://github.com/camunda-community-hub/vanillabp-camunda7-adapter
https://github.com/camunda-community-hub/vanillabp-camunda8-adapter
stephan.pelikan@phactum.at
https://github.com/vanillabp/simple-vanillabp-demo
https://www.vanillabp.io
https://github.com/vanillabp
comprehensive
documentation](https://image.slidesharecdn.com/gainmorefreedomwhenmigratingfromcamunda7to8-230222083846-2eefad6e/85/Gain-more-freedom-when-migrating-from-Camunda-7-to-8-pdf-18-320.jpg)
Gain more freedom when migrating from Camunda 7 to 8.pdf
- 1. Gain more freedom when migrating from Camunda 7 to 8 Photo by Alex Radelich on Unsplash Stephan Pelikan senior_developer@phactum
- 2. 7.x 8.x • Embedded engine • Various APIs to implement tasks Java native, External Task (polling) • One TX for business code and Camunda • Process variables • JUEL • etc. • Separate service • One API for tasks Worker (push) • Eventual consistency • JSON data object • FEEL • etc. Image from Tenor
- 3. 7.x 8.x Time Now Completed Camunda projects Ongoing Camunda projects Upcoming Camunda projects Start using C8 C7 C8 C8 C7 ??? ??? C7 C7 C7
- 5. Camunda 8 API Start a workflow Complete a service task Correlate an incoming message Register and complete user tasks Camunda 7 API Camunda 7 API
- 6. Camunda 7 Adapter Camunda 8 API Start a workflow Complete a service task Correlate an incoming message Register and complete user tasks Camunda 7 API Abstract Business Processing API Camunda 8 Adapter
- 7. Abstract Business Processing API 7.x 8.x Time Now Start using C8 C7 C8 C8 C7 ??? ??? C7 C7 C7 Upcoming Projects Current Project Old Processing Projects • If there is a new business requirement • If component will live longer than Camunda 7 support period Future Projects • Clean architecture • Focus on business requirements • Not all developers need to know about Camunda details • Decouple development from point in time when to start using Camunda 8
- 8. Maintenance of adapters necessary Centralized maintenance for multiple projects Cons / Pros Clean architecture Burden to implement (especially for Camunda beginners) Only features available in C7 & C8 Not a „no change“ approach Decouple development Simplify your software & scale your teams easier
- 9. Cons / Pros Clean architecture Burden to implement (especially for Camunda beginners) Only features available in C7 & C8 Maintenance of adapters necessary Decouple development Centralized maintenance for multiple projects VanillaBP Business processing at its best taste [va·nil·la] … simple, plain, no frills Not a „no change“ approach Simplify your software & scale your teams easier
- 10. VanillaBP Business processing at its best taste [va·nil·la] … simple, plain, no frills <dependency> <groupId>org.camunda.community.vanillabp</groupId> <artifactId>camunda7-spring-boot-adapter</artifactId> </dependency> <dependency> <groupId>io.vanillabp</groupId> <artifactId>spi-for-java</artifactId> </dependency> pom.xml Interfaces, Enums & Annotations SPI Binding, BPMN deployment <dependency> <groupId>org.camunda.community.vanillabp</groupId> <artifactId>camunda8-spring-boot-adapter</artifactId> </dependency>
- 11. VanillaBP Business processing at its best taste [va·nil·la] … simple, plain, no frills pom.xml c7/demo.bpmn BPMN process ID: DemoWorkflow Expression: ${processTask} Condition: ${not success} Expression: ${logError} Expression: ${demoWorkflow.processTask} Delegate-Expression: ${demoWorkflowProcessTask} Expression: ${demoWorkflow.processTask} Delegate-Expression: ${demoWorkflowProcessTask}
- 12. DemoAggregate.java DemoWorkflow.java 1 @WorkflowService 2 @Service 3 public class DemoWorkflow { 4 5 } VanillaBP Business processing at its best taste [va·nil·la] … simple, plain, no frills ID: DemoWorkflow Expression: ${processTask} Condition: ${not success} Expression: ${logError} pom.xml c7/demo.bpmn 1 @Entity @Table(name = "DEMO") 2 @Getter @Setter @AllArgsConstructor 3 public class DemoAggregate { 4 @Id @Column(name = "ID") 5 private String id; 6 @Column(name = "SUCCESS") 7 private boolean success; 8 } start a workflow 1 @WorkflowService(workflowAggregateClass = DemoAggregate.class) 2 @Service 3 public class DemoWorkflow { 4 5 } 1 @WorkflowService(workflowAggregateClass = DemoAggregate.class) 2 @Service 3 public class DemoWorkflow { 4 @Autowired 5 private ProcessService<DemoAggregate> processService; 6 7 public void startDemo(String id) throws Exception { 8 var demo = new DemoAggregate(id, false); 10 processService.startWorkflow(demo); 11 } 12 } 1 @WorkflowService(workflowAggregateClass = DemoAggregate.class) 2 @Service 3 public class DemoWorkflow { 4 @Autowired 5 private ProcessService<DemoAggregate> processService; 6 7 public void startDemo(String id) throws Exception { 8 var demo = new DemoAggregate(id, false); 10 processService.startWorkflow(demo); 11 } 12 13 @WorkflowTask 14 public void processTask(DemoAggregate demo) { 15 demo.setSuccess(true); 16 } 17 } 1 @WorkflowService(workflowAggregateClass = DemoAggregate.class) 2 @Service 3 public class DemoWorkflow { 4 @Autowired 5 private ProcessService<DemoAggregate> processService; 6 7 public void startDemo(String id) throws Exception { 8 var demo = new DemoAggregate(id, false); 10 processService.startWorkflow(demo); 11 } 12 13 @WorkflowTask 14 public void processTask(DemoAggregate demo) { 15 demo.setSuccess(true); 16 } 17 18 @WorkflowTask(taskDefinition = "logError") 19 public void logErrorOnFailure() { 20 logger.info("error"); 21 } 22 }
- 13. DemoAggregate.java DemoWorkflow.java VanillaBP Business processing at its best taste [va·nil·la] … simple, plain, no frills pom.xml Caused by: java.lang.IllegalStateException: No Spring Data repository defined for demo.DemoAggregate at io.vanillabp.springboot.utils.JpaSpringDataUtil.getRepository(JpaSpringDataUtil.java:62) Validation on booting the application 1 @Repository 2 public interface DemoAggregateRepository 3 extends JpaRepository<DemoAggregate, String> { 4 5 } DemoAggregateRepository.java Caused by: java.lang.RuntimeException: No public method annotated with @WorkflowTask is matching task having task-definition 'processTask' of process 'DemoWorkflow'. Tested for: at io.vanillabp.springboot.adapter.TaskWiringBase.wireTask(TaskWiringBase.java:199) Caused by: java.lang.RuntimeException: You need to autowire 'io.vanillabp.spi.process.ProcessService<demo.DemoAggregate>' in your code to be able to start workflows! at io.vanillabp.camunda7.wiring.Camunda7TaskWiring.lambda$1(Camunda7TaskWiring.java:81) c7/demo.bpmn
- 14. DemoAggregate.java DemoWorkflow.java VanillaBP Business processing at its best taste [va·nil·la] … simple, plain, no frills pom.xml DemoAggregateRepository.java c7/demo.bpmn Task-definition: processTask Condition: =not(success) Task-definition: logError c7/demo.bpmn Expression: ${processTask} Condition: ${not success} Expression: ${logError} Point to directory „c8/“ instead of „c7/“ in Spring config Switch the Maven dependency to „camunda8-spring-boot-adapter“ c8/demo.bpmn BPMN process ID: DemoWorkflow
- 16. VanillaBP Abstraction Wiring of BPMN and services Process variables Service-like tasks Receive-like tasks Asynchronous tasks User tasks Multi-instance tasks BPMN errors Deployment of BPMN BPMN process versions
- 17. run C7 processes next to C8 processes run C7 processes instances next to C8 processes instances of the same workflow BPMN version-specific tasks Toppings run C7 processes or C8 processes using the same code ✔ JakartaEE 👋 Photo by Josephina Kolpachnikof on Unsplash Support async tasks for C7 based on external tasks
- 18. VanillaBP Business processing at its best taste [va·nil·la] … simple, plain, no frills https://github.com/camunda-community-hub/vanillabp-camunda7-adapter https://github.com/camunda-community-hub/vanillabp-camunda8-adapter stephan.pelikan@phactum.at https://github.com/vanillabp/simple-vanillabp-demo https://www.vanillabp.io https://github.com/vanillabp comprehensive documentation