JarCastingSpring Zeebe
This project allows to leverage Zeebe within your Spring or Spring Boot environment easily. It is basically a wrapper around the Zeebe Java Client.
How to use
Connect to Zeebe Broker
Just add the @EnableZeebeClient annotation to your Spring Boot Application:
@SpringBootApplication
@EnableZeebeClient
public class MySpringBootApplication {
Now you can inject the ZeebeClient and work with it, e.g. to create new workflow instances:
@Autowired
private ZeebeClient client;
Deploy Workflow Models
Use the @ZeebeDeployment annotation:
@SpringBootApplication
@EnableZeebeClient
@ZeebeDeployment(classPathResources = "demoProcess.bpmn")
public class MySpringBootApplication {
You can also deploy multiple files at once:
@ZeebeDeployment(classPathResources ={"demoProcess.bpmn", "demoProcess2.bpmn"})
Implement Job Worker
@ZeebeWorker(type = "foo")
public void handleJobFoo(final JobClient client, final ActivatedJob job) {
// do whatever you need to do
client.newCompleteCommand(job.getKey())
.variables("{\"fooResult\": 1}")
.send()
.exceptionally( throwable -> { throw new RuntimeException("Could not complete job " + job, throwable); });
}
Configuring Camunda Cloud Connection
Connections to the Camunda Cloud can be easily configured:
zeebe.client.cloud.clusterId=xxx
zeebe.client.cloud.clientId=xxx
zeebe.client.cloud.clientSecret=xxx
If you don't connect to the Camunda Cloud production environment you might have to also adjust these two properties:
zeebe.client.cloud.baseUrl=zeebe.camunda.io
zeebe.client.cloud.port=443
zeebe.client.cloud.authUrl=https://login.cloud.camunda.io/oauth/token
As an alternative you can use the Zeebe Client environment variables.
Configuring Self-managed Zeebe Connection
zeebe.client.broker.gatewayAddress=127.0.0.1:26500
zeebe.client.security.plaintext=true
Additional Configuration Options
If you build a worker that only serves one thing, it might also be handy to define the worker job type globally - and not in the annotation:
zeebe.client.worker.defaultType=foo
For a full set of configuration options please see ZeebeClientConfigurationProperties.java
ObjectMapper customization
If you need to customize the ObjectMapper that the Zeebe client uses to work with variables, you can declare a bean with type io.camunda.zeebe.client.api.JsonMapper like this:
@Configuration
class MyConfiguration {
@Bean
public JsonMapper jsonMapper() {
new ZeebeObjectMapper().enable(DeserializationFeature.ACCEPT_EMPTY_ARRAY_AS_NULL_OBJECT);
}
}
Add Spring Boot Starter to Your Project
Just add the following Maven dependency to your Spring Boot Starter project:
<dependency>
<groupId>io.camunda</groupId>
<artifactId>spring-zeebe-starter</artifactId>
<version>${CURRENT_VERSION}</version>
</dependency>
Examples
Have a look into the examples/ folder for working Maven projects that might serve as inspiration.
Code of Conduct
This project adheres to the Contributor Covenant Code of Conduct. By participating, you are expected to uphold this code. Please report unacceptable behavior to [email protected].
