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/*
* Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH
* under one or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information regarding copyright
* ownership. Camunda licenses this file to you under the Apache License,
* Version 2.0; 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.impl.cmd;
import java.io.ByteArrayInputStream;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.camunda.bpm.application.ProcessApplicationReference;
import org.camunda.bpm.application.ProcessApplicationRegistration;
import org.camunda.bpm.engine.ProcessEngine;
import org.camunda.bpm.engine.RepositoryService;
import org.camunda.bpm.engine.exception.NotFoundException;
import org.camunda.bpm.engine.exception.NotValidException;
import org.camunda.bpm.engine.history.UserOperationLogEntry;
import org.camunda.bpm.engine.impl.ProcessEngineLogger;
import org.camunda.bpm.engine.impl.bpmn.deployer.BpmnDeployer;
import org.camunda.bpm.engine.impl.cfg.CommandChecker;
import org.camunda.bpm.engine.impl.cfg.TransactionLogger;
import org.camunda.bpm.engine.impl.cfg.TransactionState;
import org.camunda.bpm.engine.impl.cmmn.deployer.CmmnDeployer;
import org.camunda.bpm.engine.impl.interceptor.Command;
import org.camunda.bpm.engine.impl.interceptor.CommandContext;
import org.camunda.bpm.engine.impl.persistence.deploy.DeploymentFailListener;
import org.camunda.bpm.engine.impl.persistence.entity.DeploymentEntity;
import org.camunda.bpm.engine.impl.persistence.entity.DeploymentManager;
import org.camunda.bpm.engine.impl.persistence.entity.ProcessApplicationDeploymentImpl;
import org.camunda.bpm.engine.impl.persistence.entity.ProcessDefinitionManager;
import org.camunda.bpm.engine.impl.persistence.entity.PropertyChange;
import org.camunda.bpm.engine.impl.persistence.entity.ResourceEntity;
import org.camunda.bpm.engine.impl.persistence.entity.ResourceManager;
import org.camunda.bpm.engine.impl.persistence.entity.UserOperationLogManager;
import org.camunda.bpm.engine.impl.repository.CandidateDeploymentImpl;
import org.camunda.bpm.engine.impl.repository.DeploymentBuilderImpl;
import org.camunda.bpm.engine.impl.repository.ProcessApplicationDeploymentBuilderImpl;
import org.camunda.bpm.engine.impl.util.ClockUtil;
import org.camunda.bpm.engine.impl.util.StringUtil;
import org.camunda.bpm.engine.repository.CandidateDeployment;
import org.camunda.bpm.engine.repository.Deployment;
import org.camunda.bpm.engine.repository.DeploymentHandler;
import org.camunda.bpm.engine.repository.DeploymentWithDefinitions;
import org.camunda.bpm.engine.repository.ProcessApplicationDeployment;
import org.camunda.bpm.engine.repository.ProcessApplicationDeploymentBuilder;
import org.camunda.bpm.engine.repository.ProcessDefinition;
import org.camunda.bpm.engine.repository.Resource;
import org.camunda.bpm.engine.repository.ResumePreviousBy;
import org.camunda.bpm.model.bpmn.Bpmn;
import org.camunda.bpm.model.bpmn.BpmnModelInstance;
import org.camunda.bpm.model.bpmn.instance.Process;
import org.camunda.bpm.model.cmmn.Cmmn;
import org.camunda.bpm.model.cmmn.CmmnModelInstance;
import org.camunda.bpm.model.cmmn.instance.Case;
/**
* @author Tom Baeyens
* @author Joram Barrez
* @author Thorben Lindhauer
* @author Daniel Meyer
*/
public class DeployCmd implements Command, Serializable {
private static final long serialVersionUID = 1L;
private static final CommandLogger LOG = ProcessEngineLogger.CMD_LOGGER;
private static final TransactionLogger TX_LOG = ProcessEngineLogger.TX_LOGGER;
protected DeploymentBuilderImpl deploymentBuilder;
protected DeploymentHandler deploymentHandler;
public DeployCmd(DeploymentBuilderImpl deploymentBuilder) {
this.deploymentBuilder = deploymentBuilder;
}
@Override
public DeploymentWithDefinitions execute(final CommandContext commandContext) {
if (commandContext.getProcessEngineConfiguration().isDeploymentSynchronized()) {
// ensure serial processing of multiple deployments on the same node.
// We experienced deadlock situations with highly concurrent deployment of multiple
// applications on Jboss & Wildfly
synchronized (ProcessEngine.class) {
return doExecute(commandContext);
}
} else {
return doExecute(commandContext);
}
}
protected DeploymentWithDefinitions doExecute(final CommandContext commandContext) {
DeploymentManager deploymentManager = commandContext.getDeploymentManager();
// load deployment handler
ProcessEngine processEngine = commandContext.getProcessEngineConfiguration().getProcessEngine();
deploymentHandler = commandContext.getProcessEngineConfiguration()
.getDeploymentHandlerFactory()
.buildDeploymentHandler(processEngine);
Set deploymentIds = getAllDeploymentIds(deploymentBuilder);
if (!deploymentIds.isEmpty()) {
String[] deploymentIdArray = deploymentIds.toArray(new String[deploymentIds.size()]);
List deployments = deploymentManager.findDeploymentsByIds(deploymentIdArray);
ensureDeploymentsWithIdsExists(deploymentIds, deployments);
}
checkCreateAndReadDeployments(commandContext, deploymentIds);
// set deployment name if it should retrieved from an existing deployment
String nameFromDeployment = deploymentBuilder.getNameFromDeployment();
setDeploymentName(nameFromDeployment, deploymentBuilder, commandContext);
// get resources to re-deploy
List resources = getResources(deploymentBuilder, commandContext);
// .. and add them the builder
addResources(resources, deploymentBuilder);
Collection resourceNames = deploymentBuilder.getResourceNames();
if (resourceNames == null || resourceNames.isEmpty()) {
throw new NotValidException("No deployment resources contained to deploy.");
}
// perform deployment
DeploymentWithDefinitions deployment = commandContext.runWithoutAuthorization(() -> {
acquireExclusiveLock(commandContext);
DeploymentEntity deploymentToRegister = initDeployment();
Map resourcesToDeploy =
resolveResourcesToDeploy(commandContext, deploymentToRegister);
Map resourcesToIgnore = new HashMap<>(deploymentToRegister.getResources());
resourcesToIgnore.keySet().removeAll(resourcesToDeploy.keySet());
// save initial deployment resources before they are replaced with only the deployed ones
CandidateDeployment candidateDeployment =
CandidateDeploymentImpl.fromDeploymentEntity(deploymentToRegister);
if (!resourcesToDeploy.isEmpty()) {
LOG.debugCreatingNewDeployment();
deploymentToRegister.setResources(resourcesToDeploy);
deploy(commandContext, deploymentToRegister);
} else {
// if there are no resources to be deployed, find an existing deployment
String duplicateDeploymentId =
deploymentHandler.determineDuplicateDeployment(candidateDeployment);
deploymentToRegister =
commandContext.getDeploymentManager().findDeploymentById(duplicateDeploymentId);
}
scheduleProcessDefinitionActivation(commandContext, deploymentToRegister);
if(deploymentBuilder instanceof ProcessApplicationDeploymentBuilder) {
// for process application deployments, job executor registration
// is managed by the ProcessApplicationManager
ProcessApplicationRegistration registration = registerProcessApplication(
commandContext,
deploymentToRegister,
candidateDeployment,
resourcesToIgnore.values());
return new ProcessApplicationDeploymentImpl(deploymentToRegister, registration);
} else {
registerWithJobExecutor(commandContext, deploymentToRegister);
}
return deploymentToRegister;
});
createUserOperationLog(deploymentBuilder, deployment, commandContext);
return deployment;
}
protected void acquireExclusiveLock(CommandContext commandContext) {
if (commandContext.getProcessEngineConfiguration().isDeploymentLockUsed()) {
// Acquire global exclusive lock: this ensures that there can be only one
// transaction in the cluster which is allowed to perform deployments.
// This is important to ensure that duplicate filtering works correctly
// in a multi-node cluster. See also https://app.camunda.com/jira/browse/CAM-2128
// It is also important to ensure the uniqueness of a process definition key,
// version and tenant-id since there is no database constraint to check it.
commandContext.getPropertyManager().acquireExclusiveLock();
} else {
LOG.warnDisabledDeploymentLock();
}
}
protected Map resolveResourcesToDeploy(
CommandContext commandContext,
DeploymentEntity candidateDeployment) {
Map resourcesToDeploy = new HashMap<>();
Map candidateResources = candidateDeployment.getResources();
if (deploymentBuilder.isDuplicateFilterEnabled()) {
if (candidateDeployment.getName() == null) {
LOG.warnFilteringDuplicatesEnabledWithNullDeploymentName();
}
String source = candidateDeployment.getSource();
if (source == null || source.isEmpty()) {
source = ProcessApplicationDeployment.PROCESS_APPLICATION_DEPLOYMENT_SOURCE;
}
Map existingResources = commandContext
.getResourceManager()
.findLatestResourcesByDeploymentName(
candidateDeployment.getName(),
candidateResources.keySet(),
source,
candidateDeployment.getTenantId());
for (ResourceEntity deployedResource : candidateResources.values()) {
String resourceName = deployedResource.getName();
ResourceEntity existingResource = existingResources.get(resourceName);
if (existingResource == null
|| existingResource.isGenerated()
|| deploymentHandler.shouldDeployResource(deployedResource, existingResource)) {
if (deploymentBuilder.isDeployChangedOnly()) {
// resource should be deployed
resourcesToDeploy.put(resourceName, deployedResource);
} else {
// all resources should be deployed
resourcesToDeploy = candidateResources;
break;
}
}
}
} else {
resourcesToDeploy = candidateResources;
}
return resourcesToDeploy;
}
protected void deploy(CommandContext commandContext, DeploymentEntity deployment) {
deployment.setNew(true);
commandContext.getDeploymentManager().insertDeployment(deployment);
}
protected void scheduleProcessDefinitionActivation(CommandContext commandContext,
DeploymentWithDefinitions deployment) {
if (deploymentBuilder.getProcessDefinitionsActivationDate() != null) {
RepositoryService repositoryService = commandContext.getProcessEngineConfiguration()
.getRepositoryService();
for (ProcessDefinition processDefinition: getDeployedProcesses(commandContext, deployment)) {
// If activation date is set, we first suspend all the process definition
repositoryService
.updateProcessDefinitionSuspensionState()
.byProcessDefinitionId(processDefinition.getId())
.suspend();
// And we schedule an activation at the provided date
repositoryService
.updateProcessDefinitionSuspensionState()
.byProcessDefinitionId(processDefinition.getId())
.executionDate(deploymentBuilder.getProcessDefinitionsActivationDate())
.activate();
}
}
}
protected ProcessApplicationRegistration registerProcessApplication(CommandContext commandContext,
DeploymentEntity deploymentToRegister,
CandidateDeployment candidateDeployment, Collection ignoredResources) {
ProcessApplicationDeploymentBuilderImpl appDeploymentBuilder = (ProcessApplicationDeploymentBuilderImpl) deploymentBuilder;
final ProcessApplicationReference appReference = appDeploymentBuilder.getProcessApplicationReference();
// build set of deployment ids this process app should be registered for:
Set deploymentsToRegister = new HashSet<>(Collections.singleton(deploymentToRegister.getId()));
if (appDeploymentBuilder.isResumePreviousVersions()) {
String resumePreviousBy = appDeploymentBuilder.getResumePreviousVersionsBy();
switch (resumePreviousBy) {
case ResumePreviousBy.RESUME_BY_DEPLOYMENT_NAME:
deploymentsToRegister.addAll(deploymentHandler
.determineDeploymentsToResumeByDeploymentName(candidateDeployment));
break;
case ResumePreviousBy.RESUME_BY_PROCESS_DEFINITION_KEY:
default:
String[] processDefinitionKeys = getProcessDefinitionsFromResources(commandContext,
deploymentToRegister,
ignoredResources);
// only determine deployments to resume if there are actual process definitions to look for
if (processDefinitionKeys.length > 0) {
deploymentsToRegister.addAll(deploymentHandler
.determineDeploymentsToResumeByProcessDefinitionKey(processDefinitionKeys));
}
break;
}
}
// register process application for deployments
return new RegisterProcessApplicationCmd(deploymentsToRegister, appReference).execute(commandContext);
}
protected void registerWithJobExecutor(CommandContext commandContext, Deployment deployment) {
try {
new RegisterDeploymentCmd(deployment.getId()).execute(commandContext);
} finally {
DeploymentFailListener listener = new DeploymentFailListener(deployment.getId(),
commandContext.getProcessEngineConfiguration().getCommandExecutorTxRequiresNew());
try {
commandContext.getTransactionContext().addTransactionListener(TransactionState.ROLLED_BACK, listener);
} catch (Exception e) {
TX_LOG.debugTransactionOperation("Could not register transaction synchronization. Probably the TX has already been rolled back by application code.");
listener.execute(commandContext);
}
}
}
// setters, initializers etc.
protected void createUserOperationLog(DeploymentBuilderImpl deploymentBuilder, Deployment deployment, CommandContext commandContext) {
UserOperationLogManager logManager = commandContext.getOperationLogManager();
List properties = new ArrayList<>();
PropertyChange filterDuplicate = new PropertyChange("duplicateFilterEnabled", null, deploymentBuilder.isDuplicateFilterEnabled());
properties.add(filterDuplicate);
if (deploymentBuilder.isDuplicateFilterEnabled()) {
PropertyChange deployChangedOnly = new PropertyChange("deployChangedOnly", null, deploymentBuilder.isDeployChangedOnly());
properties.add(deployChangedOnly);
}
logManager.logDeploymentOperation(UserOperationLogEntry.OPERATION_TYPE_CREATE, deployment.getId(), deployment.getTenantId(), properties);
}
protected DeploymentEntity initDeployment() {
DeploymentEntity deployment = deploymentBuilder.getDeployment();
deployment.setDeploymentTime(ClockUtil.getCurrentTime());
return deployment;
}
protected void setDeploymentName(String deploymentId, DeploymentBuilderImpl deploymentBuilder, CommandContext commandContext) {
if (deploymentId != null && !deploymentId.isEmpty()) {
DeploymentManager deploymentManager = commandContext.getDeploymentManager();
DeploymentEntity deployment = deploymentManager.findDeploymentById(deploymentId);
deploymentBuilder.getDeployment().setName(deployment.getName());
}
}
protected void addResources(List resources, DeploymentBuilderImpl deploymentBuilder) {
DeploymentEntity deployment = deploymentBuilder.getDeployment();
Map existingResources = deployment.getResources();
for (ResourceEntity resource : resources) {
String resourceName = resource.getName();
if (existingResources != null && existingResources.containsKey(resourceName)) {
String message = String.format("Cannot add resource with id '%s' and name '%s' from "
+ "deployment with id '%s' to new deployment because the new deployment contains "
+ "already a resource with same name.", resource.getId(), resourceName, resource.getDeploymentId());
throw new NotValidException(message);
}
ByteArrayInputStream inputStream = new ByteArrayInputStream(resource.getBytes());
deploymentBuilder.addInputStream(resourceName, inputStream);
}
}
// getters
protected List getMissingElements(Set expected, Map actual) {
List missingElements = new ArrayList<>();
for (String value : expected) {
if (!actual.containsKey(value)) {
missingElements.add(value);
}
}
return missingElements;
}
protected List getResources(final DeploymentBuilderImpl deploymentBuilder, final CommandContext commandContext) {
List resources = new ArrayList<>();
Set deploymentIds = deploymentBuilder.getDeployments();
resources.addAll(getResourcesByDeploymentId(deploymentIds, commandContext));
Map> deploymentResourcesById = deploymentBuilder.getDeploymentResourcesById();
resources.addAll(getResourcesById(deploymentResourcesById, commandContext));
Map> deploymentResourcesByName = deploymentBuilder.getDeploymentResourcesByName();
resources.addAll(getResourcesByName(deploymentResourcesByName, commandContext));
checkDuplicateResourceName(resources);
return resources;
}
protected List getResourcesByDeploymentId(Set deploymentIds, CommandContext commandContext) {
List result = new ArrayList<>();
if (!deploymentIds.isEmpty()) {
DeploymentManager deploymentManager = commandContext.getDeploymentManager();
for (String deploymentId : deploymentIds) {
DeploymentEntity deployment = deploymentManager.findDeploymentById(deploymentId);
Map resources = deployment.getResources();
Collection values = resources.values();
result.addAll(values);
}
}
return result;
}
protected List getResourcesById(Map> resourcesById, CommandContext commandContext) {
List result = new ArrayList<>();
ResourceManager resourceManager = commandContext.getResourceManager();
for (String deploymentId : resourcesById.keySet()) {
Set resourceIds = resourcesById.get(deploymentId);
String[] resourceIdArray = resourceIds.toArray(new String[resourceIds.size()]);
List resources = resourceManager.findResourceByDeploymentIdAndResourceIds(deploymentId, resourceIdArray);
ensureResourcesWithIdsExist(deploymentId, resourceIds, resources);
result.addAll(resources);
}
return result;
}
protected List getResourcesByName(Map> resourcesByName, CommandContext commandContext) {
List result = new ArrayList<>();
ResourceManager resourceManager = commandContext.getResourceManager();
for (String deploymentId : resourcesByName.keySet()) {
Set resourceNames = resourcesByName.get(deploymentId);
String[] resourceNameArray = resourceNames.toArray(new String[resourceNames.size()]);
List resources = resourceManager.findResourceByDeploymentIdAndResourceNames(deploymentId, resourceNameArray);
ensureResourcesWithNamesExist(deploymentId, resourceNames, resources);
result.addAll(resources);
}
return result;
}
protected List getDeployedProcesses(CommandContext commandContext, DeploymentWithDefinitions deployment) {
List deployedProcessDefinitions = deployment.getDeployedProcessDefinitions();
if (deployedProcessDefinitions == null) {
// existing deployment
ProcessDefinitionManager manager = commandContext.getProcessDefinitionManager();
deployedProcessDefinitions = manager.findProcessDefinitionsByDeploymentId(deployment.getId());
}
return deployedProcessDefinitions;
}
protected String[] getProcessDefinitionsFromResources(CommandContext commandContext,
DeploymentEntity deploymentToRegister,
Collection ignoredResources) {
Set processDefinitionKeys = new HashSet<>();
// get process definition keys for already available process definitions
processDefinitionKeys.addAll(parseProcessDefinitionKeys(ignoredResources));
// get process definition keys for updated process definitions
for (ProcessDefinition processDefinition :
getDeployedProcesses(commandContext, deploymentToRegister)) {
if (processDefinition.getVersion() > 1) {
processDefinitionKeys.add(processDefinition.getKey());
}
}
return processDefinitionKeys.toArray(new String[processDefinitionKeys.size()]);
}
protected Set parseProcessDefinitionKeys(Collection resources) {
Set processDefinitionKeys = new HashSet<>(resources.size());
for (Resource resource : resources) {
if (isBpmnResource(resource)) {
ByteArrayInputStream byteStream = new ByteArrayInputStream(resource.getBytes());
BpmnModelInstance model = Bpmn.readModelFromStream(byteStream);
for (Process process : model.getDefinitions().getChildElementsByType(Process.class)) {
processDefinitionKeys.add(process.getId());
}
} else if (isCmmnResource(resource)) {
ByteArrayInputStream byteStream = new ByteArrayInputStream(resource.getBytes());
CmmnModelInstance model = Cmmn.readModelFromStream(byteStream);
for (Case cmmnCase : model.getDefinitions().getCases()) {
processDefinitionKeys.add(cmmnCase.getId());
}
}
}
return processDefinitionKeys;
}
protected Set getAllDeploymentIds(DeploymentBuilderImpl deploymentBuilder) {
Set result = new HashSet<>();
String nameFromDeployment = deploymentBuilder.getNameFromDeployment();
if (nameFromDeployment != null && !nameFromDeployment.isEmpty()) {
result.add(nameFromDeployment);
}
Set deployments = deploymentBuilder.getDeployments();
result.addAll(deployments);
deployments = deploymentBuilder.getDeploymentResourcesById().keySet();
result.addAll(deployments);
deployments = deploymentBuilder.getDeploymentResourcesByName().keySet();
result.addAll(deployments);
return result;
}
// checkers
protected void checkDuplicateResourceName(List resources) {
Map resourceMap = new HashMap<>();
for (ResourceEntity resource : resources) {
String name = resource.getName();
ResourceEntity duplicate = resourceMap.get(name);
if (duplicate != null) {
String deploymentId = resource.getDeploymentId();
if (!deploymentId.equals(duplicate.getDeploymentId())) {
String message = String.format("The deployments with id '%s' and '%s' contain a resource with same name '%s'.", deploymentId, duplicate.getDeploymentId(), name);
throw new NotValidException(message);
}
}
resourceMap.put(name, resource);
}
}
protected void checkCreateAndReadDeployments(CommandContext commandContext, Set deploymentIds) {
for(CommandChecker checker : commandContext.getProcessEngineConfiguration().getCommandCheckers()) {
checker.checkCreateDeployment();
for (String deploymentId : deploymentIds) {
checker.checkReadDeployment(deploymentId);
}
}
}
protected boolean isBpmnResource(Resource resourceEntity) {
return StringUtil.hasAnySuffix(resourceEntity.getName(), BpmnDeployer.BPMN_RESOURCE_SUFFIXES);
}
protected boolean isCmmnResource(Resource resourceEntity) {
return StringUtil.hasAnySuffix(resourceEntity.getName(), CmmnDeployer.CMMN_RESOURCE_SUFFIXES);
}
// ensures
protected void ensureDeploymentsWithIdsExists(Set expected, List actual) {
Map deploymentMap = new HashMap<>();
for (DeploymentEntity deployment : actual) {
deploymentMap.put(deployment.getId(), deployment);
}
List missingDeployments = getMissingElements(expected, deploymentMap);
if (!missingDeployments.isEmpty()) {
StringBuilder builder = new StringBuilder();
builder.append("The following deployments are not found by id: ");
builder.append(StringUtil.join(missingDeployments.iterator()));
throw new NotFoundException(builder.toString());
}
}
protected void ensureResourcesWithIdsExist(String deploymentId, Set expectedIds, List actual) {
Map resources = new HashMap<>();
for (ResourceEntity resource : actual) {
resources.put(resource.getId(), resource);
}
ensureResourcesWithKeysExist(deploymentId, expectedIds, resources, "id");
}
protected void ensureResourcesWithNamesExist(String deploymentId, Set expectedNames, List actual) {
Map resources = new HashMap<>();
for (ResourceEntity resource : actual) {
resources.put(resource.getName(), resource);
}
ensureResourcesWithKeysExist(deploymentId, expectedNames, resources, "name");
}
protected void ensureResourcesWithKeysExist(String deploymentId, Set expectedKeys, Map actual, String valueProperty) {
List missingResources = getMissingElements(expectedKeys, actual);
if (!missingResources.isEmpty()) {
StringBuilder builder = new StringBuilder();
builder.append("The deployment with id '");
builder.append(deploymentId);
builder.append("' does not contain the following resources with ");
builder.append(valueProperty);
builder.append(": ");
builder.append(StringUtil.join(missingResources.iterator()));
throw new NotFoundException(builder.toString());
}
}
/**
* When CockroachDB is used, this command may be retried multiple times until
* it is successful, or the retries are exhausted. CockroachDB uses a stricter,
* SERIALIZABLE transaction isolation which ensures a serialized manner
* of transaction execution. A concurrent transaction that attempts to modify
* the same data as another transaction is required to abort, rollback and retry.
* This also makes our use-case of pessimistic locks redundant since we only use
* them as synchronization barriers, and not to lock actual data which would
* protect it from concurrent modifications.
*
* The Deploy command only executes internal code, so we are certain that a retry
* of a failed deployment will not impact user data, and may be performed multiple times.
*/
@Override
public boolean isRetryable() {
return true;
}
}
