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Update to Camunda 8.9 and Spring Boot 4 #133

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76bcb12
update Spring Boot version to 4.0.6 and configure Spring Boot 3 for C…
maxbehr801 Apr 24, 2026
7d41b70
update README to reflect Camunda 7 EOL and clarify compatibility matr…
maxbehr801 Apr 24, 2026
06c02a6
update Dockerfile to use Maven 3.9.9 with Eclipse Temurin 17
maxbehr801 Apr 24, 2026
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45 changes: 23 additions & 22 deletions README.md
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Expand Up @@ -95,36 +95,37 @@ The list of [releases](https://github.com/envite-consulting/camunda-carbon-reduc

We use [Semantic Versioning](https://semver.org/).

The following compatibility matrix shows the officially supported Camunda versions for each release.
The following compatibility matrix shows the officially supported Camunda and Spring Boot versions for each release.
Other combinations might also work but have not been tested.

| Release | Camunda Platform 8 | Camunda Platform 7 |
|---------|--------------------|--------------------|
| 2.1.5 | 8.6.0 | 7.22.0 |
| 2.1.6 | 8.7.0 | 7.23.0 |
| 2.1.7 | 8.8.0 | 7.24.0 |
| Release | Camunda Platform 8 | Spring Boot (C8) | Camunda Platform 7 | Spring Boot (C7) |
|---------|--------------------|------------------|--------------------|------------------|
| 2.1.5 | 8.6.0 | 3.x | 7.22.0 | 3.x |
| 2.1.6 | 8.7.0 | 3.x | 7.23.0 | 3.x |
| 2.1.7 | 8.8.0 | 3.x | 7.24.0 | 3.x |
| 2.1.8 | 8.9.0 | 4.x | 7.24.0 | 3.x |

<details>


<summary>Click to see older releases</summary>

| Release | Camunda Platform 8 | Camunda Platform 7 |
|---------|--------------------|--------------------|
| 1.0.0 | 8.1.0 | 7.18.0 |
| 1.1.0 | 8.2.0 | 7.19.0 |
| 2.0.0 | 8.2.3 | 7.19.0 |
| 2.0.1 | 8.2.3 | 7.19.0 |
| 2.0.2 | 8.2.3 | 7.19.0 |
| 2.0.3 | 8.3.0 | 7.19.0 |
| 2.1.0 | 8.3.0 | 7.20.0 |
| 2.1.1 | 8.4.0 | 7.20.0 |
| 2.1.2 | 8.5.0 | 7.21.0 |
| 2.1.3 | 8.5.0 | 7.21.0 |
| 2.1.4 | 8.5.0 | 7.21.0 |
| 2.1.5 | 8.6.0 | 7.22.0 |
| 2.1.6 | 8.7.0 | 7.23.0 |
| 2.1.7 | 8.8.0 | 7.24.0 |
| Release | Camunda Platform 8 | Spring Boot (C8) | Camunda Platform 7 | Spring Boot (C7) |
|---------|--------------------|------------------|--------------------|------------------|
| 1.0.0 | 8.1.0 | - | 7.18.0 | - |
| 1.1.0 | 8.2.0 | - | 7.19.0 | - |
| 2.0.0 | 8.2.3 | - | 7.19.0 | - |
| 2.0.1 | 8.2.3 | - | 7.19.0 | - |
| 2.0.2 | 8.2.3 | - | 7.19.0 | - |
| 2.0.3 | 8.3.0 | - | 7.19.0 | - |
| 2.1.0 | 8.3.0 | - | 7.20.0 | - |
| 2.1.1 | 8.4.0 | - | 7.20.0 | - |
| 2.1.2 | 8.5.0 | - | 7.21.0 | - |
| 2.1.3 | 8.5.0 | - | 7.21.0 | - |
| 2.1.4 | 8.5.0 | - | 7.21.0 | - |
| 2.1.5 | 8.6.0 | 3.x | 7.22.0 | 3.x |
| 2.1.6 | 8.7.0 | 3.x | 7.23.0 | 3.x |
| 2.1.7 | 8.8.0 | 3.x | 7.24.0 | 3.x |

</details>

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6 changes: 5 additions & 1 deletion camunda-carbon-reductor-c7/README.md
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@@ -1,6 +1,10 @@
# 🌱Camunda Carbon Reductor - Camunda 7

Camunda 7 [External Task Worker](https://docs.camunda.org/manual/7.18/user-guide/process-engine/external-tasks/) adapter implementation of the Carbon Reductor.
> **⚠️ Camunda 7 EOL:** Camunda 7 is reaching End of Life (EoL)
> This module uses Spring Boot 3.x.

Camunda 7 [External Task Worker](https://docs.camunda.org/manual/latest/user-guide/process-engine/external-tasks/)
adapter implementation of the Carbon Reductor.
Provides also a Service Task Template for configuration ([carbon-reductor.json](../exampleprocess/c7/.camunda/element-templates/carbon-reductor-c7-template.json))


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5 changes: 4 additions & 1 deletion camunda-carbon-reductor-c7/pom.xml
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Expand Up @@ -22,10 +22,11 @@

<dependencyManagement>
<dependencies>
<!-- explicitly override to Spring Boot 3 as Camunda 7 is not compatible with Spring Boot 4 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>${version.spring-boot}</version>
<version>${version.spring-boot-c7}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
Expand Down Expand Up @@ -136,6 +137,8 @@
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<!-- Explicitly use Spring Boot 3 plugin for C7 module -->
<version>${version.spring-boot-c7}</version>
<configuration>
<excludes>
<exclude>
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2 changes: 1 addition & 1 deletion camunda-carbon-reductor-c8/Dockerfile
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@@ -1,4 +1,4 @@
FROM maven:3.8.3-openjdk-17 AS build
FROM maven:3.9.9-eclipse-temurin-17 AS build
COPY . .
RUN mvn clean package -DskipTests

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3 changes: 2 additions & 1 deletion camunda-carbon-reductor-c8/README.md
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Expand Up @@ -56,7 +56,8 @@ off the default API if you like to enable another one.

## Run Connector locally

Configure the application using [application.yml](./src/main/resources/application.yml). Find more info at [Configuring Camunda 8 Connection](https://github.com/camunda-community-hub/spring-zeebe?tab=readme-ov-file#configuring-camunda-8-connection)
Configure the application using [application.yml](./src/main/resources/application.yml). Find more info
at [Configuring Camunda 8 Connection](https://docs.camunda.io/docs/apis-tools/spring-zeebe-sdk/configuration/)

You can run the Connector and connect it to a Camunda Platform 8 SaaS cluster.

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12 changes: 0 additions & 12 deletions camunda-carbon-reductor-c8/pom.xml
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Expand Up @@ -15,18 +15,6 @@
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>

<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>${version.spring-boot}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>

<dependencies>

<dependency>
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7 changes: 4 additions & 3 deletions pom.xml
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Expand Up @@ -17,7 +17,7 @@
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>3.4.4</version>
<version>4.0.6</version>
<relativePath />
</parent>

Expand All @@ -37,9 +37,10 @@
<version.domainprimitives>0.1.1</version.domainprimitives>

<version.swagger-core>2.2.30</version.swagger-core>
<version.camunda8>8.8.0</version.camunda8>
<version.camunda8>8.9.0</version.camunda8>
<version.camunda7.spring-boot>7.24.0</version.camunda7.spring-boot>
<version.spring-boot>3.4.4</version.spring-boot>
<!-- Spring Boot 3 version for C7 module only -->
<version.spring-boot-c7>3.4.4</version.spring-boot-c7>
<version.org.jacoco>0.8.13</version.org.jacoco>
<version.spring-banner-plugin>1.6.0</version.spring-banner-plugin>
<version.maven-release-plugin>3.1.1</version.maven-release-plugin>
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