/* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.camunda.bpm.engine.test.cache;
import java.util.List;
import org.camunda.bpm.engine.ProcessEngine;
import org.camunda.bpm.engine.ProcessEngineConfiguration;
import org.camunda.bpm.engine.ProcessEngines;
import org.camunda.bpm.engine.RepositoryService;
import org.camunda.bpm.engine.RuntimeService;
import org.camunda.bpm.engine.TaskService;
import org.camunda.bpm.engine.impl.cfg.ProcessEngineConfigurationImpl;
import org.camunda.bpm.engine.impl.cfg.StandaloneInMemProcessEngineConfiguration;
import org.camunda.bpm.engine.impl.cfg.StandaloneProcessEngineConfiguration;
import org.camunda.bpm.engine.impl.test.PvmTestCase;
import org.camunda.bpm.engine.repository.ProcessDefinition;
import org.camunda.bpm.engine.runtime.ProcessInstance;
import org.camunda.bpm.engine.task.Task;
/**
* Test cases for testing functionality when the process engine is rebooted.
*
* @author Joram Barrez
*/
public class ProcessDefinitionCacheTest extends PvmTestCase {
// 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 wasnt 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")
.setJobExecutorActivate(false)
.buildProcessEngine();
processEngine.getRepositoryService()
.createDeployment()
.addClasspathResource("org/camunda/bpm/engine/test/cache/originalProcess.bpmn20.xml")
.deploy();
// verify existance of process definiton
List<ProcessDefinition> processDefinitions = processEngine
.getRepositoryService()
.createProcessDefinitionQuery()
.list();
assertEquals(1, processDefinitions.size());
// Start a new Process instance
ProcessInstance processInstance = processEngine.getRuntimeService().startProcessInstanceById(processDefinitions.get(0).getId());
String processInstanceId = processInstance.getId();
assertNotNull(processInstance);
// Close the process engine
processEngine.close();
assertNotNull(processEngine.getRuntimeService());
// Reboot the process engine
processEngine = new StandaloneProcessEngineConfiguration()
.setProcessEngineName("reboot-test")
.setDatabaseSchemaUpdate(org.camunda.bpm.engine.ProcessEngineConfiguration.DB_SCHEMA_UPDATE_FALSE)
.setJdbcUrl("jdbc:h2:mem:activiti-reboot-test;DB_CLOSE_DELAY=1000")
.setJobExecutorActivate(false)
.buildProcessEngine();
// Check if the existing process instance is still alive
processInstance = processEngine
.getRuntimeService()
.createProcessInstanceQuery()
.processInstanceId(processInstanceId)
.singleResult();
assertNotNull(processInstance);
// 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();
assertNull(processInstance);
// Extra check to see if a new process instance can be started as well
processInstance = processEngine.getRuntimeService().startProcessInstanceById(processDefinitions.get(0).getId());
assertNotNull(processInstance);
// close the process engine
processEngine.close();
// Cleanup schema
schemaProcessEngine.close();
}
public void testDeployRevisedProcessAfterDeleteOnOtherProcessEngine() {
// Setup both process engines
ProcessEngine processEngine1 = new StandaloneProcessEngineConfiguration()
.setProcessEngineName("reboot-test-schema")
.setDatabaseSchemaUpdate(org.camunda.bpm.engine.ProcessEngineConfiguration.DB_SCHEMA_UPDATE_TRUE)
.setJdbcUrl("jdbc:h2:mem:activiti-process-cache-test;DB_CLOSE_DELAY=1000")
.setJobExecutorActivate(false)
.buildProcessEngine();
RepositoryService repositoryService1 = processEngine1.getRepositoryService();
ProcessEngine processEngine2 = new StandaloneProcessEngineConfiguration()
.setProcessEngineName("reboot-test")
.setDatabaseSchemaUpdate(org.camunda.bpm.engine.ProcessEngineConfiguration.DB_SCHEMA_UPDATE_FALSE)
.setJdbcUrl("jdbc:h2:mem:activiti-process-cache-test;DB_CLOSE_DELAY=1000")
.setJobExecutorActivate(false)
.buildProcessEngine();
RepositoryService repositoryService2 = processEngine2.getRepositoryService();
RuntimeService runtimeService2 = processEngine2.getRuntimeService();
TaskService taskService2 = processEngine2.getTaskService();
// Deploy first version of process: start->originalTask->end on first process engine
String deploymentId = repositoryService1.createDeployment()
.addClasspathResource("org/camunda/bpm/engine/test/cache/originalProcess.bpmn20.xml")
.deploy()
.getId();
// Start process instance on second engine
String processDefinitionId = repositoryService2.createProcessDefinitionQuery().singleResult().getId();
runtimeService2.startProcessInstanceById(processDefinitionId);
Task task = taskService2.createTaskQuery().singleResult();
assertEquals("original task", task.getName());
// Delete the deployment on second process engine
repositoryService2.deleteDeployment(deploymentId, true);
assertEquals(0, repositoryService2.createDeploymentQuery().count());
assertEquals(0, runtimeService2.createProcessInstanceQuery().count());
// deploy a revised version of the process: start->revisedTask->end on first process engine
//
// Before the bugfix, this would set the cache on the first process engine,
// but the second process engine still has the original process definition in his cache.
// Since there is a deployment delete in between, the new generated process definition id is the same
// as in the original deployment, making the second process engine using the old cached process definition.
deploymentId = repositoryService1.createDeployment()
.addClasspathResource("org/camunda/bpm/engine/test/cache/revisedProcess.bpmn20.xml")
.deploy()
.getId();
// Start process instance on second process engine -> must use revised process definition
processDefinitionId = repositoryService2.createProcessDefinitionQuery().singleResult().getId();
runtimeService2.startProcessInstanceByKey("oneTaskProcess");
task = taskService2.createTaskQuery().singleResult();
assertEquals("revised task", task.getName());
// cleanup
repositoryService1.deleteDeployment(deploymentId, true);
processEngine1.close();
processEngine2.close();
}
}