resourceRootPath does not work in spring boot app

This issue was imported from JIRA:

Field	Value
JIRA Link	CAM-12154
Reporter	@garima-camunda
Has restricted visibility comments	true

Steps to reproduce

Created simple Camunda Spring boot app version 7.12.5-ee.
Placed a foo.bpmn file in src/main/resources/bpmn folder

Placed following entry in processes.xml


<process-application
xmlns="http://www.camunda.org/schema/1.0/ProcessApplication"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

<process-archive name="loan-approval">
<process-engine>default</process-engine>
<properties>
  <property name="isDeleteUponUndeploy">false</property>
  <property name="isScanForProcessDefinitions">true</property>
   <property name="resourceRootPath">bpmn</property>
</properties>
</process-archive>

* Build the application 
* Started the application via java -jar <name-of-jar>
* Went to Cockpit->Deployments. I do not not see foo.bpmn in the deployments page
* During application start up, noticed following in the log.

2020-07-07 15:17:05.613 INFO 2024 --- < main> org.camunda.bpm.container : ENGINE-08024 Found processes.xml file at jar:file:/Users/garima.yadav/eclipse-workspace/sampleproject3/target/sampleproject3.jar!/META-INF/processes.xml 2020-07-07 15:17:05.702 INFO 2024 --- < main> org.camunda.bpm.container : ENGINE-08021 Not creating a deployment for process archive 'camundaApplication': no resources provided. 2020-07-07 15:17:05.707 INFO 2024 --- < main> org.camunda.bpm.container : ENGINE-08050 Process application camundaApplication successfully deployed


* The log statement "Not creating a deployment for process archive 'camundaApplication': no resources provided" tells us that engine actually did not deploy the resources. 

**Actual Behaviour**
The BPMN processes placed in "bpmn" folder does not get deployed

**Expected Behaviour**
The BPMN processes placed in "bpmn" folder should get deployed

**Links:**
* is related to https://jira.camunda.com/browse/SUPPORT-14152
* is related to https://jira.camunda.com/browse/SUPPORT-8106

This comment was imported from JIRA and written by user @yanavasileva

Doc of resourceRootPath: https://docs.camunda.org/manual/7.13/reference/deployment-descriptors/tags/process-archive/

local to the root of the classpath. By default or if the prefix classpath: is used, the path is interpreted as relative to the root of the classloader. Example: path/to/my/processes or classpath:path/to/my/processes) Doc of spring boot PA: https://docs.camunda.org/manual/7.13/user-guide/spring-boot-integration/process-applications/

Workarounds:

resourceRootPath: BOOT-INF/classes/bpmn in that case will work for running the application as jar but will fail if it's started via IDE.
use auto-deployment feature instead + deployment-resource-pattern

Root cause: Repackaging during the build, details will follow.

camunda / camunda-bpm-platform

resourceRootPath does not work in spring boot app #2454