/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.nifi.web.dao.impl;
import org.apache.nifi.connectable.Position;
import org.apache.nifi.connectable.Size;
import org.apache.nifi.controller.FlowController;
import org.apache.nifi.controller.label.Label;
import org.apache.nifi.groups.ProcessGroup;
import org.apache.nifi.web.ResourceNotFoundException;
import org.apache.nifi.web.api.dto.LabelDTO;
import org.apache.nifi.web.dao.LabelDAO;
import java.util.Set;
public class StandardLabelDAO extends ComponentDAO implements LabelDAO {
private FlowController flowController;
private Label locateLabel(final String labelId) {
final ProcessGroup rootGroup = flowController.getGroup(flowController.getRootGroupId());
final Label label = rootGroup.findLabel(labelId);
if (label == null) {
throw new ResourceNotFoundException(String.format("Unable to find label with id '%s'.", labelId));
} else {
return label;
}
}
@Override
public boolean hasLabel(String labelId) {
final ProcessGroup rootGroup = flowController.getGroup(flowController.getRootGroupId());
return rootGroup.findLabel(labelId) != null;
}
@Override
public Label createLabel(String groupId, LabelDTO labelDTO) {
if (labelDTO.getParentGroupId() != null && !flowController.areGroupsSame(groupId, labelDTO.getParentGroupId())) {
throw new IllegalArgumentException("Cannot specify a different Parent Group ID than the Group to which the Label is being added.");
}
// get the desired group
ProcessGroup group = locateProcessGroup(flowController, groupId);
// create the label
Label label = flowController.createLabel(labelDTO.getId(), labelDTO.getLabel());
if (labelDTO.getPosition() != null) {
label.setPosition(new Position(labelDTO.getPosition().getX(), labelDTO.getPosition().getY()));
}
if (labelDTO.getWidth() != null && labelDTO.getHeight() != null) {
label.setSize(new Size(labelDTO.getWidth(), labelDTO.getHeight()));
}
label.setStyle(labelDTO.getStyle());
// add the label
group.addLabel(label);
return label;
}
@Override
public Label getLabel(String labelId) {
return locateLabel(labelId);
}
@Override
public Set<Label> getLabels(String groupId) {
ProcessGroup group = locateProcessGroup(flowController, groupId);
return group.getLabels();
}
@Override
public Label updateLabel(LabelDTO labelDTO) {
// get the label being updated
Label label = locateLabel(labelDTO.getId());
// update the label state
if (labelDTO.getPosition() != null) {
label.setPosition(new Position(labelDTO.getPosition().getX(), labelDTO.getPosition().getY()));
}
if (labelDTO.getStyle() != null) {
label.setStyle(labelDTO.getStyle());
}
if (labelDTO.getLabel() != null) {
label.setValue(labelDTO.getLabel());
}
if (labelDTO.getWidth() != null && labelDTO.getHeight() != null) {
label.setSize(new Size(labelDTO.getWidth(), labelDTO.getHeight()));
}
return label;
}
@Override
public void deleteLabel(String labelId) {
// get the label
Label label = locateLabel(labelId);
// remove the label
label.getProcessGroup().removeLabel(label);
}
/* setters */
public void setFlowController(FlowController flowController) {
this.flowController = flowController;
}
}