cn.dockerfoundry.ide.eclipse.server.ui.internal.actions.ModifyServicesForApplicationAction.java Source code

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Here is the source code for cn.dockerfoundry.ide.eclipse.server.ui.internal.actions.ModifyServicesForApplicationAction.java

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/*******************************************************************************
 * Copyright (c) 2012, 2015 Pivotal Software, Inc. 
 * 
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of 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.
 *  
 *  Contributors:
 *     Pivotal Software, Inc. - initial API and implementation
 ********************************************************************************/
package cn.dockerfoundry.ide.eclipse.server.ui.internal.actions;

import java.util.ArrayList;
import java.util.List;

import org.cloudfoundry.client.lib.domain.CloudService;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jface.viewers.IStructuredSelection;

import cn.dockerfoundry.ide.eclipse.server.core.internal.CloudErrorUtil;
import cn.dockerfoundry.ide.eclipse.server.core.internal.client.DockerFoundryApplicationModule;
import cn.dockerfoundry.ide.eclipse.server.core.internal.client.DockerFoundryServerBehaviour;
import cn.dockerfoundry.ide.eclipse.server.core.internal.client.DeploymentInfoWorkingCopy;
import cn.dockerfoundry.ide.eclipse.server.core.internal.client.ICloudFoundryOperation;
import cn.dockerfoundry.ide.eclipse.server.core.internal.client.LocalCloudService;
import cn.dockerfoundry.ide.eclipse.server.ui.internal.editor.DockerFoundryApplicationsEditorPage;

/**
 * Action for modifying list of services for an application. Subclasses are
 * responsible for defining the list of services to add or to remove.
 * @author Terry Denney
 * @author Steffen Pingel
 * @author Christian Dupuis
 */
public abstract class ModifyServicesForApplicationAction extends EditorAction {

    private DockerFoundryApplicationModule appModule;

    public ModifyServicesForApplicationAction(DockerFoundryApplicationModule appModule,
            DockerFoundryServerBehaviour serverBehaviour, DockerFoundryApplicationsEditorPage editorPage) {
        super(editorPage, RefreshArea.DETAIL);

        this.appModule = appModule;
    }

    abstract public List<String> getServicesToAdd();

    abstract public List<String> getServicesToRemove();

    protected void setApplicationModule(DockerFoundryApplicationModule appModule) {
        this.appModule = appModule;
    }

    @Override
    protected ICloudFoundryOperation getOperation(IProgressMonitor monitor) throws CoreException {
        List<String> existingServices = null;

        final List<String> updatedServices = new ArrayList<String>();

        DeploymentInfoWorkingCopy workingCopy = appModule.resolveDeploymentInfoWorkingCopy(monitor);

        // Check the deployment information to see if it has an existing list of
        // bound services.
        existingServices = workingCopy.asServiceBindingList();

        // Must iterate rather than passing to constructor or using
        // addAll, as some
        // of the entries in existing services may be null.
        if (existingServices != null) {
            for (String existingService : existingServices) {
                if (existingService != null) {
                    updatedServices.add(existingService);
                }
            }
        }

        // This leads to duplicate services, as a user could drop an existing
        // service already
        // added to an application
        boolean serviceChanges = false;
        List<String> servicesToAdd = getServicesToAdd();
        for (String serviceToAdd : servicesToAdd) {
            if (!updatedServices.contains(serviceToAdd)) {
                updatedServices.add(serviceToAdd);
                serviceChanges = true;
            }
        }

        serviceChanges |= updatedServices.removeAll(getServicesToRemove());

        if (serviceChanges) {
            // Save the changes even if an app is not deployed
            List<CloudService> boundServices = new ArrayList<CloudService>();
            for (String serName : updatedServices) {
                boundServices.add(new LocalCloudService(serName));
            }
            workingCopy.setServices(boundServices);
            workingCopy.save();

            if (appModule.getApplication() != null) {
                // update services right away, if app is already deployed
                return getBehaviour().operations().bindServices(appModule, updatedServices);
            }
        }
        return null;
    }

    @Override
    protected boolean shouldLogException(CoreException e) {
        return !CloudErrorUtil.isNotFoundException(e);
    }

    public static List<String> getServiceNames(IStructuredSelection selection) {
        Object[] objects = selection.toArray();
        List<String> services = new ArrayList<String>();

        for (Object object : objects) {
            if (object instanceof CloudService) {
                services.add(((CloudService) object).getName());
            }
        }
        return services;
    }

    public static List<CloudService> getServices(IStructuredSelection selection) {
        Object[] objects = selection.toArray();
        List<CloudService> services = new ArrayList<CloudService>();

        for (Object object : objects) {
            if (object instanceof CloudService) {
                services.add(((CloudService) object));
            }
        }
        return services;
    }
}