/* 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.activiti.engine.impl.cmd;
import java.io.Serializable;
import java.util.Arrays;
import java.util.Map;
import org.activiti.engine.impl.context.Context;
import org.activiti.engine.impl.interceptor.Command;
import org.activiti.engine.impl.interceptor.CommandContext;
import org.activiti.engine.impl.persistence.entity.DeploymentEntity;
import org.activiti.engine.impl.persistence.entity.ProcessDefinitionEntity;
import org.activiti.engine.impl.persistence.entity.ResourceEntity;
import org.activiti.engine.impl.repository.DeploymentBuilderImpl;
import org.activiti.engine.impl.util.ClockUtil;
import org.activiti.engine.repository.Deployment;
/**
* @author Tom Baeyens
* @author Joram Barrez
*/
public class DeployCmd<T> implements Command<Deployment>, Serializable {
private static final long serialVersionUID = 1L;
protected DeploymentBuilderImpl deploymentBuilder;
public DeployCmd(DeploymentBuilderImpl deploymentBuilder) {
this.deploymentBuilder = deploymentBuilder;
}
public Deployment execute(CommandContext commandContext) {
DeploymentEntity deployment = deploymentBuilder.getDeployment();
deployment.setDeploymentTime(ClockUtil.getCurrentTime());
if ( deploymentBuilder.isDuplicateFilterEnabled() ) {
DeploymentEntity existingDeployment = Context
.getCommandContext()
.getDeploymentManager()
.findLatestDeploymentByName(deployment.getName());
if ( (existingDeployment!=null)
&& !deploymentsDiffer(deployment, existingDeployment)) {
return existingDeployment;
}
}
deployment.setNew(true);
Context
.getCommandContext()
.getDeploymentManager()
.insertDeployment(deployment);
if (deploymentBuilder.getProcessDefinitionsActivationDate() != null) {
scheduleProcessDefinitionActivation(commandContext, deployment);
}
return deployment;
}
protected boolean deploymentsDiffer(DeploymentEntity deployment, DeploymentEntity saved) {
Map<String, ResourceEntity> resources = deployment.getResources();
Map<String, ResourceEntity> savedResources = saved.getResources();
for (String resourceName: resources.keySet()) {
ResourceEntity savedResource = savedResources.get(resourceName);
if(savedResource == null) return true;
if(!savedResource.isGenerated()) {
ResourceEntity resource = resources.get(resourceName);
byte[] bytes = resource.getBytes();
byte[] savedBytes = savedResource.getBytes();
if (!Arrays.equals(bytes, savedBytes)) {
return true;
}
}
}
return false;
}
protected void scheduleProcessDefinitionActivation(CommandContext commandContext, DeploymentEntity deployment) {
for (ProcessDefinitionEntity processDefinitionEntity : deployment.getDeployedArtifacts(ProcessDefinitionEntity.class)) {
// If activation date is set, we first suspend all the process definition
SuspendProcessDefinitionCmd suspendProcessDefinitionCmd =
new SuspendProcessDefinitionCmd(processDefinitionEntity, false, null);
suspendProcessDefinitionCmd.execute(commandContext);
// And we schedule an activation at the provided date
ActivateProcessDefinitionCmd activateProcessDefinitionCmd =
new ActivateProcessDefinitionCmd(processDefinitionEntity, false, deploymentBuilder.getProcessDefinitionsActivationDate());
activateProcessDefinitionCmd.execute(commandContext);
}
}
// private boolean resourcesDiffer(ByteArrayEntity value, ByteArrayEntity other) {
// if (value == null && other == null) {
// return false;
// }
// String bytes = createKey(value.getBytes());
// String savedBytes = other == null ? null : createKey(other.getBytes());
// return !bytes.equals(savedBytes);
// }
//
// private String createKey(byte[] bytes) {
// if (bytes == null) {
// return "";
// }
// MessageDigest digest;
// try {
// digest = MessageDigest.getInstance("MD5");
// } catch (NoSuchAlgorithmException e) {
// throw new IllegalStateException("MD5 algorithm not available. Fatal (should be in the JDK).");
// }
// bytes = digest.digest(bytes);
// return String.format("%032x", new BigInteger(1, bytes));
// }
}