Examples with StandaloneInMemProcessEngineConfiguration org.activiti.engine.impl.cfg.StandaloneInMemProcessEngineConfiguration used on opensource projects

Example 6 with StandaloneInMemProcessEngineConfiguration

use of org.activiti.engine.impl.cfg.StandaloneInMemProcessEngineConfiguration in project Activiti by Activiti.

the class ProcessDefinitionCacheTest method testStartProcessInstanceByIdAfterReboot.

// Test for a bug: when the process engine is rebooted the
// cache is cleaned and the deployed process definition is
// removed from the process cache. This led to problems because
// the id wasn't fetched from the DB after a redeploy.
public void testStartProcessInstanceByIdAfterReboot() {
    // In case this test is run in a test suite, previous engines might
    // have been initialized and cached. First we close the
    // existing process engines to make sure that the db is clean
    // and that there are no existing process engines involved.
    ProcessEngines.destroy();
    // Creating the DB schema (without building a process engine)
    ProcessEngineConfigurationImpl processEngineConfiguration = new StandaloneInMemProcessEngineConfiguration();
    processEngineConfiguration.setProcessEngineName("reboot-test-schema");
    processEngineConfiguration.setJdbcUrl("jdbc:h2:mem:activiti-reboot-test;DB_CLOSE_DELAY=1000");
    ProcessEngine schemaProcessEngine = processEngineConfiguration.buildProcessEngine();
    // Create process engine and deploy test process
    ProcessEngine processEngine = new StandaloneProcessEngineConfiguration().setProcessEngineName("reboot-test").setDatabaseSchemaUpdate(ProcessEngineConfiguration.DB_SCHEMA_UPDATE_FALSE).setJdbcUrl("jdbc:h2:mem:activiti-reboot-test;DB_CLOSE_DELAY=1000").setAsyncExecutorActivate(false).buildProcessEngine();
    processEngine.getRepositoryService().createDeployment().addClasspathResource("org/activiti/engine/test/cache/originalProcess.bpmn20.xml").deploy();
    // verify existence of process definition
    List<ProcessDefinition> processDefinitions = processEngine.getRepositoryService().createProcessDefinitionQuery().list();
    assertThat(processDefinitions).hasSize(1);
    // Start a new Process instance
    ProcessInstance processInstance = processEngine.getRuntimeService().startProcessInstanceById(processDefinitions.get(0).getId());
    String processInstanceId = processInstance.getId();
    assertThat(processInstance).isNotNull();
    // Close the process engine
    processEngine.close();
    assertThat(processEngine.getRuntimeService()).isNotNull();
    // Reboot the process engine
    processEngine = new StandaloneProcessEngineConfiguration().setProcessEngineName("reboot-test").setDatabaseSchemaUpdate(ProcessEngineConfiguration.DB_SCHEMA_UPDATE_FALSE).setJdbcUrl("jdbc:h2:mem:activiti-reboot-test;DB_CLOSE_DELAY=1000").setAsyncExecutorActivate(false).buildProcessEngine();
    // Check if the existing process instance is still alive
    processInstance = processEngine.getRuntimeService().createProcessInstanceQuery().processInstanceId(processInstanceId).singleResult();
    assertThat(processInstance).isNotNull();
    // Complete the task. That will end the process instance
    TaskService taskService = processEngine.getTaskService();
    Task task = taskService.createTaskQuery().list().get(0);
    taskService.complete(task.getId());
    // Check if the process instance has really ended. This means that the
    // process definition has
    // re-loaded into the process definition cache
    processInstance = processEngine.getRuntimeService().createProcessInstanceQuery().processInstanceId(processInstanceId).singleResult();
    assertThat(processInstance).isNull();
    // Extra check to see if a new process instance can be started as well
    processInstance = processEngine.getRuntimeService().startProcessInstanceById(processDefinitions.get(0).getId());
    assertThat(processInstance).isNotNull();
    // close the process engine
    processEngine.close();
    // Cleanup schema
    schemaProcessEngine.close();
}