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-rw-r--r--bpmn/mso-infrastructure-bpmn/src/main/java/org/onap/so/bpmn/common/workflow/service/AutoProcessInstanceMigrationService.java111
1 files changed, 111 insertions, 0 deletions
diff --git a/bpmn/mso-infrastructure-bpmn/src/main/java/org/onap/so/bpmn/common/workflow/service/AutoProcessInstanceMigrationService.java b/bpmn/mso-infrastructure-bpmn/src/main/java/org/onap/so/bpmn/common/workflow/service/AutoProcessInstanceMigrationService.java
new file mode 100644
index 0000000000..58d0c6d374
--- /dev/null
+++ b/bpmn/mso-infrastructure-bpmn/src/main/java/org/onap/so/bpmn/common/workflow/service/AutoProcessInstanceMigrationService.java
@@ -0,0 +1,111 @@
+package org.onap.so.bpmn.common.workflow.service;
+
+import java.util.ArrayList;
+import java.util.List;
+import org.camunda.bpm.engine.ProcessEngine;
+import org.camunda.bpm.engine.RepositoryService;
+import org.camunda.bpm.engine.RuntimeService;
+import org.camunda.bpm.engine.migration.MigrationInstruction;
+import org.camunda.bpm.engine.migration.MigrationPlan;
+import org.camunda.bpm.engine.migration.MigrationPlanExecutionBuilder;
+import org.camunda.bpm.engine.repository.ProcessDefinition;
+import org.camunda.bpm.engine.runtime.ProcessInstance;
+import org.camunda.bpm.engine.runtime.ProcessInstanceQuery;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.boot.context.event.ApplicationReadyEvent;
+import org.springframework.context.event.EventListener;
+import org.springframework.core.env.Environment;
+import org.springframework.stereotype.Service;
+
+@Service
+public class AutoProcessInstanceMigrationService {
+
+ private static Logger logger = LoggerFactory.getLogger(AutoProcessInstanceMigrationService.class);
+
+ @Autowired
+ private Environment env;
+ @Autowired
+ protected ProcessEngine processEngine;
+
+ @Value("${migration.autoMigrationEnabled:false}")
+ private boolean autoMigrationEnabled;
+
+ private RuntimeService runtimeService;
+ private RepositoryService repositoryService;
+ private List<String> processDefinitionKeys;
+
+ @EventListener(ApplicationReadyEvent.class)
+ protected void executeAutoProcessInstanceMigrations() {
+ if (autoMigrationEnabled) {
+ runtimeService = processEngine.getRuntimeService();
+ repositoryService = processEngine.getRepositoryService();
+ for (ProcessDefinition definition : getProcessDefinitions()) {
+ for (ProcessDefinition procDefOld : getOldProcessDefinitions(definition.getKey(),
+ definition.getVersion())) {
+ migrate(procDefOld.getId(), definition.getId());
+ }
+ }
+ }
+ }
+
+ protected List<ProcessDefinition> getProcessDefinitions() {
+
+ List<ProcessDefinition> processDefinitions = new ArrayList<ProcessDefinition>();
+ processDefinitionKeys = env.getProperty("migration.processDefinitionKeys", List.class, new ArrayList<String>());
+ for (String key : processDefinitionKeys) {
+ processDefinitions.add(repositoryService.createProcessDefinitionQuery().processDefinitionKey(key)
+ .latestVersion().singleResult());
+ }
+ return processDefinitions;
+ }
+
+ private void migrate(String sourceProcessDefinitionId, String targetProcessDefinitionId) {
+ MigrationPlan migrationPlan =
+ runtimeService.createMigrationPlan(sourceProcessDefinitionId, targetProcessDefinitionId)
+ .mapEqualActivities().updateEventTriggers().build();
+ List<String> activityIds = new ArrayList<>();
+
+ for (MigrationInstruction instruction : migrationPlan.getInstructions()) {
+ activityIds.add(instruction.getSourceActivityId());
+ }
+ for (String activityId : activityIds) {
+ ProcessInstanceQuery activeProcessInstancesQuery = runtimeService.createProcessInstanceQuery()
+ .processDefinitionId(sourceProcessDefinitionId).activityIdIn(activityId).active();
+ if (!activeProcessInstancesQuery.list().isEmpty()) {
+ logger.info("Migrating {} process instance(s) from {} to {}",
+ Long.valueOf(activeProcessInstancesQuery.count()), sourceProcessDefinitionId,
+ targetProcessDefinitionId);
+ MigrationPlanExecutionBuilder migration =
+ runtimeService.newMigration(migrationPlan).processInstanceQuery(activeProcessInstancesQuery);
+ migration.executeAsync();
+ }
+ }
+ suspendEmptyProcessDefinition(sourceProcessDefinitionId);
+ }
+
+ private void suspendEmptyProcessDefinition(String sourceProcessDefinitionId) {
+ List<ProcessInstance> activeProcessInstances = runtimeService.createProcessInstanceQuery()
+ .processDefinitionId(sourceProcessDefinitionId).active().list();
+ if (activeProcessInstances.isEmpty()) {
+ repositoryService.suspendProcessDefinitionById(sourceProcessDefinitionId);
+ } else {
+ logger.info("Unable to migrate {} process instance(s) from {}",
+ Integer.valueOf(activeProcessInstances.size()), sourceProcessDefinitionId);
+ }
+ }
+
+ protected List<ProcessDefinition> getOldProcessDefinitions(String key, int version) {
+ List<ProcessDefinition> processDefinitions =
+ repositoryService.createProcessDefinitionQuery().processDefinitionKey(key).list();
+ List<ProcessDefinition> oldProcessDefinitions = new ArrayList<>();
+ for (ProcessDefinition processDef : processDefinitions) {
+ if (!processDef.isSuspended() && (processDef.getVersion() != version)) {
+ oldProcessDefinitions.add(processDef);
+ }
+ }
+ return oldProcessDefinitions;
+ }
+}