Camunda 7 - Spring Boot to Remote Engine Connectivity https

Camunda 7 Topics
1

Can someone help me on this. I have spring boot + Camunda remote engine running 7.21. When I try to run local spring boot to connect https camunda engine path which is running in cloud, I am getting below erro .

2024-11-20T16:27:01.116+05:30 ERROR 10964 — [TopicSubscriptionManager] org.camunda.bpm.client : TASK/CLIENT-03001 Exception while fetching and locking task.

org.camunda.bpm.client.impl.EngineClientException: TASK/CLIENT-02005 Exception while mapping json object to response dto class ‘class org.camunda.bpm.client.impl.EngineRestExceptionDto’
at org.camunda.bpm.client.impl.EngineClientLogger.exceptionWhileMappingJsonObject(EngineClientLogger.java:50) ~[camunda-external-task-client-7.21.0.jar:7.21.0]
at org.camunda.bpm.client.impl.RequestExecutor.deserializeResponse(RequestExecutor.java:153) ~[camunda-external-task-client-7.21.0.jar:7.21.0]
at org.camunda.bpm.client.impl.RequestExecutor$1.handleResponse(RequestExecutor.java:127) ~[camunda-external-task-client-7.21.0.jar:7.21.0]
at org.apache.hc.client5.http.impl.classic.CloseableHttpClient.execute(CloseableHttpClient.java:247) ~[httpclient5-5.2.3.jar:5.2.3]
at org.apache.hc.client5.http.impl.classic.CloseableHttpClient.execute(CloseableHttpClient.java:188) ~[httpclient5-5.2.3.jar:5.2.3]
at org.apache.hc.client5.http.impl.classic.CloseableHttpClient.execute(CloseableHttpClient.java:162) ~[httpclient5-5.2.3.jar:5.2.3]
at org.camunda.bpm.client.impl.RequestExecutor.executeRequest(RequestExecutor.java:83) ~[camunda-external-task-client-7.21.0.jar:7.21.0]
at org.camunda.bpm.client.impl.RequestExecutor.postRequest(RequestExecutor.java:69) ~[camunda-external-task-client-7.21.0.jar:7.21.0]
at org.camunda.bpm.client.impl.EngineClient.fetchAndLock(EngineClient.java:89) ~[camunda-external-task-client-7.21.0.jar:7.21.0]
at org.camunda.bpm.client.topic.impl.TopicSubscriptionManager.fetchAndLock(TopicSubscriptionManager.java:136) ~[camunda-external-task-client-7.21.0.jar:7.21.0]
at org.camunda.bpm.client.topic.impl.TopicSubscriptionManager.acquire(TopicSubscriptionManager.java:102) ~[camunda-external-task-client-7.21.0.jar:7.21.0]
at org.camunda.bpm.client.topic.impl.TopicSubscriptionManager.run(TopicSubscriptionManager.java:88) ~[camunda-external-task-client-7.21.0.jar:7.21.0]
at java.base/java.lang.Thread.run(Thread.java:842) ~[na:na]
Caused by: com.fasterxml.jackson.databind.exc.MismatchedInputException: No content to map due to end-of-input
at [Source: (org.apache.hc.core5.http.io.entity.EmptyInputStream); line: 1, column: 0]
at com.fasterxml.jackson.databind.exc.MismatchedInputException.from(MismatchedInputException.java:59) ~[jackson-databind-2.15.4.jar:2.15.4]
at com.fasterxml.jackson.databind.ObjectMapper._initForReading(ObjectMapper.java:4916) ~[jackson-databind-2.15.4.jar:2.15.4]
at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4818) ~[jackson-databind-2.15.4.jar:2.15.4]
at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3809) ~[jackson-databind-2.15.4.jar:2.15.4]
at org.camunda.bpm.client.impl.RequestExecutor.deserializeResponse(RequestExecutor.java:147) ~[camunda-external-task-client-7.21.0.jar:7.21.0]
… 11 common frames omitted

2

please post in Camunda 7 forum,

3

Hi @vinothkumar
Can you share the spring boot project dependencies?

Regards,
Alex

4 
<dependency>
        <groupId>org.camunda.bpm.springboot</groupId>
        <artifactId>camunda-bpm-spring-boot-starter-external-task-client</artifactId>
        <version>7.21.0</version>
    </dependency>
5

What Java version do you use?

6

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