/**
* 查看流程定义图
*
* @param request
* @param processDefId 流程定义id
* @return
*/
@RequestMapping(value = "/viewprocessDefImage.do")
public String viewprocessDefImage(
HttpServletRequest request,
HttpServletResponse response,
@RequestParam("processDefId") String processDefId)
throws Exception {
// 根据流程定义id查询流程定义
ProcessDefinition processDefinition =
repositoryService
.createProcessDefinitionQuery()
.processDefinitionId(processDefId)
.singleResult();
InputStream inputStream =
repositoryService.getResourceAsStream(
processDefinition.getDeploymentId(), processDefinition.getDiagramResourceName());
// // 输出资源内容到相应对象
// byte[] b = new byte[1024];
// int len;
// while ((len = inputStream.read(b, 0, 1024)) != -1) {
// response.getOutputStream().write(b, 0, len);
// }
response.getOutputStream().write(IoUtil.readInputStream(inputStream, "processDefInputStream"));
return null;
}
/**
* Generates an image of what currently is drawn on the canvas.
*
* <p>Throws an {@link ActivitiException} when {@link #close()} is already called.
*/
public InputStream generateImage(String imageType) {
if (closed) {
throw new ActivitiException("ProcessDiagramGenerator already closed");
}
ByteArrayOutputStream out = new ByteArrayOutputStream();
try {
// Try to remove white space
minX = (minX <= 5) ? 5 : minX;
minY = (minY <= 5) ? 5 : minY;
BufferedImage imageToSerialize = processDiagram;
if (minX >= 0 && minY >= 0) {
imageToSerialize =
processDiagram.getSubimage(
minX - 5, minY - 5, canvasWidth - minX + 5, canvasHeight - minY + 5);
}
ImageIO.write(imageToSerialize, imageType, out);
} catch (IOException e) {
throw new ActivitiException("Error while generating process image", e);
} finally {
IoUtil.closeSilently(out);
}
return new ByteArrayInputStream(out.toByteArray());
}
public void deploy(DeploymentEntity deployment, Map<String, Object> deploymentSettings) {
log.debug("Processing deployment {}", deployment.getName());
List<ProcessDefinitionEntity> processDefinitions = new ArrayList<ProcessDefinitionEntity>();
Map<String, ResourceEntity> resources = deployment.getResources();
Map<String, BpmnModel> bpmnModelMap = new HashMap<String, BpmnModel>();
final ProcessEngineConfigurationImpl processEngineConfiguration =
Context.getProcessEngineConfiguration();
for (String resourceName : resources.keySet()) {
log.info("Processing resource {}", resourceName);
if (isBpmnResource(resourceName)) {
ResourceEntity resource = resources.get(resourceName);
byte[] bytes = resource.getBytes();
ByteArrayInputStream inputStream = new ByteArrayInputStream(bytes);
BpmnParse bpmnParse =
bpmnParser
.createParse()
.sourceInputStream(inputStream)
.setSourceSystemId(resourceName)
.deployment(deployment)
.name(resourceName);
if (deploymentSettings != null) {
// Schema validation if needed
if (deploymentSettings.containsKey(DeploymentSettings.IS_BPMN20_XSD_VALIDATION_ENABLED)) {
bpmnParse.setValidateSchema(
(Boolean)
deploymentSettings.get(DeploymentSettings.IS_BPMN20_XSD_VALIDATION_ENABLED));
}
// Process validation if needed
if (deploymentSettings.containsKey(DeploymentSettings.IS_PROCESS_VALIDATION_ENABLED)) {
bpmnParse.setValidateProcess(
(Boolean) deploymentSettings.get(DeploymentSettings.IS_PROCESS_VALIDATION_ENABLED));
}
} else {
// On redeploy, we assume it is validated at the first deploy
bpmnParse.setValidateSchema(false);
bpmnParse.setValidateProcess(false);
}
bpmnParse.execute();
for (ProcessDefinitionEntity processDefinition : bpmnParse.getProcessDefinitions()) {
processDefinition.setResourceName(resourceName);
if (deployment.getTenantId() != null) {
processDefinition.setTenantId(
deployment.getTenantId()); // process definition inherits the tenant id
}
String diagramResourceName =
getDiagramResourceForProcess(resourceName, processDefinition.getKey(), resources);
// Only generate the resource when deployment is new to prevent modification of deployment
// resources
// after the process-definition is actually deployed. Also to prevent resource-generation
// failure every
// time the process definition is added to the deployment-cache when diagram-generation
// has failed the first time.
if (deployment.isNew()) {
if (processEngineConfiguration.isCreateDiagramOnDeploy()
&& diagramResourceName == null
&& processDefinition.isGraphicalNotationDefined()) {
try {
byte[] diagramBytes =
IoUtil.readInputStream(
processEngineConfiguration
.getProcessDiagramGenerator()
.generateDiagram(
bpmnParse.getBpmnModel(),
"png",
processEngineConfiguration.getActivityFontName(),
processEngineConfiguration.getLabelFontName(),
processEngineConfiguration.getClassLoader()),
null);
diagramResourceName =
getProcessImageResourceName(resourceName, processDefinition.getKey(), "png");
createResource(diagramResourceName, diagramBytes, deployment);
} catch (
Throwable
t) { // if anything goes wrong, we don't store the image (the process will
// still be executable).
log.warn(
"Error while generating process diagram, image will not be stored in repository",
t);
}
}
}
processDefinition.setDiagramResourceName(diagramResourceName);
processDefinitions.add(processDefinition);
bpmnModelMap.put(processDefinition.getKey(), bpmnParse.getBpmnModel());
}
}
}
// check if there are process definitions with the same process key to prevent database unique
// index violation
List<String> keyList = new ArrayList<String>();
for (ProcessDefinitionEntity processDefinition : processDefinitions) {
if (keyList.contains(processDefinition.getKey())) {
throw new ActivitiException(
"The deployment contains process definitions with the same key (process id atrribute), this is not allowed");
}
keyList.add(processDefinition.getKey());
}
CommandContext commandContext = Context.getCommandContext();
ProcessDefinitionEntityManager processDefinitionManager =
commandContext.getProcessDefinitionEntityManager();
DbSqlSession dbSqlSession = commandContext.getSession(DbSqlSession.class);
for (ProcessDefinitionEntity processDefinition : processDefinitions) {
List<TimerEntity> timers = new ArrayList<TimerEntity>();
if (deployment.isNew()) {
int processDefinitionVersion;
ProcessDefinitionEntity latestProcessDefinition = null;
if (processDefinition.getTenantId() != null
&& !ProcessEngineConfiguration.NO_TENANT_ID.equals(processDefinition.getTenantId())) {
latestProcessDefinition =
processDefinitionManager.findLatestProcessDefinitionByKeyAndTenantId(
processDefinition.getKey(), processDefinition.getTenantId());
} else {
latestProcessDefinition =
processDefinitionManager.findLatestProcessDefinitionByKey(processDefinition.getKey());
}
if (latestProcessDefinition != null) {
processDefinitionVersion = latestProcessDefinition.getVersion() + 1;
} else {
processDefinitionVersion = 1;
}
processDefinition.setVersion(processDefinitionVersion);
processDefinition.setDeploymentId(deployment.getId());
String nextId = idGenerator.getNextId();
String processDefinitionId =
processDefinition.getKey()
+ ":"
+ processDefinition.getVersion()
+ ":"
+ nextId; // ACT-505
// ACT-115: maximum id length is 64 charcaters
if (processDefinitionId.length() > 64) {
processDefinitionId = nextId;
}
processDefinition.setId(processDefinitionId);
if (commandContext.getProcessEngineConfiguration().getEventDispatcher().isEnabled()) {
commandContext
.getProcessEngineConfiguration()
.getEventDispatcher()
.dispatchEvent(
ActivitiEventBuilder.createEntityEvent(
ActivitiEventType.ENTITY_CREATED, processDefinition));
}
removeObsoleteTimers(processDefinition);
addTimerDeclarations(processDefinition, timers);
removeExistingMessageEventSubscriptions(processDefinition, latestProcessDefinition);
addMessageEventSubscriptions(processDefinition);
removeExistingSignalEventSubScription(processDefinition, latestProcessDefinition);
addSignalEventSubscriptions(processDefinition);
dbSqlSession.insert(processDefinition);
addAuthorizations(processDefinition);
if (commandContext.getProcessEngineConfiguration().getEventDispatcher().isEnabled()) {
commandContext
.getProcessEngineConfiguration()
.getEventDispatcher()
.dispatchEvent(
ActivitiEventBuilder.createEntityEvent(
ActivitiEventType.ENTITY_INITIALIZED, processDefinition));
}
scheduleTimers(timers);
} else {
String deploymentId = deployment.getId();
processDefinition.setDeploymentId(deploymentId);
ProcessDefinitionEntity persistedProcessDefinition = null;
if (processDefinition.getTenantId() == null
|| ProcessEngineConfiguration.NO_TENANT_ID.equals(processDefinition.getTenantId())) {
persistedProcessDefinition =
processDefinitionManager.findProcessDefinitionByDeploymentAndKey(
deploymentId, processDefinition.getKey());
} else {
persistedProcessDefinition =
processDefinitionManager.findProcessDefinitionByDeploymentAndKeyAndTenantId(
deploymentId, processDefinition.getKey(), processDefinition.getTenantId());
}
if (persistedProcessDefinition != null) {
processDefinition.setId(persistedProcessDefinition.getId());
processDefinition.setVersion(persistedProcessDefinition.getVersion());
processDefinition.setSuspensionState(persistedProcessDefinition.getSuspensionState());
}
}
// Add to cache
DeploymentManager deploymentManager = processEngineConfiguration.getDeploymentManager();
deploymentManager
.getProcessDefinitionCache()
.add(processDefinition.getId(), processDefinition);
addDefinitionInfoToCache(processDefinition, processEngineConfiguration, commandContext);
// Add to deployment for further usage
deployment.addDeployedArtifact(processDefinition);
createLocalizationValues(
processDefinition.getId(),
bpmnModelMap.get(processDefinition.getKey()).getProcessById(processDefinition.getKey()));
}
}
