Java tutorial
/***************************************************************************** * Copyright (c) 2008 g-Eclipse Consortium * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Initial development of the original code was made for the * g-Eclipse project founded by European Union * project number: FP6-IST-034327 http://www.geclipse.eu/ * * Contributors: * Moritz Post - initial API and implementation *****************************************************************************/ package eu.geclipse.aws.ec2.ui.actions; import java.util.ArrayList; import org.eclipse.core.runtime.CoreException; import org.eclipse.debug.core.DebugPlugin; import org.eclipse.debug.core.ILaunchConfiguration; import org.eclipse.debug.core.ILaunchConfigurationType; import org.eclipse.debug.core.ILaunchConfigurationWorkingCopy; import org.eclipse.debug.core.ILaunchManager; import org.eclipse.debug.ui.DebugUITools; import org.eclipse.jface.action.IAction; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.ui.IObjectActionDelegate; import org.eclipse.ui.IWorkbenchPart; import eu.geclipse.aws.ec2.EC2AMIImage; import eu.geclipse.aws.ec2.launch.IEC2LaunchConfigurationConstants; import eu.geclipse.aws.ec2.service.EC2Service; import eu.geclipse.aws.ec2.ui.internal.Activator; import eu.geclipse.aws.vo.AWSVirtualOrganization; import eu.geclipse.core.model.IGridService; import eu.geclipse.core.reporting.ProblemException; /** * This {@link IAction} is registered on the list of AMIs ({@link IGridService} * instances). Upon activation a {@link RunAMIInstancesWizard} is displayed * which can be used to configure run parameter for an AMI instance and to * finally launch a new instance with those parameter. * * @author Moritz Post */ public class LaunchAMI implements IObjectActionDelegate { /** The id of the external tools launch group. */ private static final String EXTERNAL_TOOLS_LAUNCH_GROUP = "org.eclipse.ui.externaltools.launchGroup"; //$NON-NLS-1$ /** The list of AMIs which are selected. */ private ArrayList<EC2AMIImage> amiList; /** The workbench this {@link IAction} resides in. */ private IWorkbenchPart workbenchPart; /** * Default constructor. */ public LaunchAMI() { this.amiList = new ArrayList<EC2AMIImage>(); } public void setActivePart(final IAction action, final IWorkbenchPart targetPart) { this.workbenchPart = targetPart; } public void run(final IAction action) { if (action.isEnabled()) { ILaunchManager manager = DebugPlugin.getDefault().getLaunchManager(); ILaunchConfigurationType type = manager .getLaunchConfigurationType(IEC2LaunchConfigurationConstants.LAUNCH_CONFIGURATION_ID); ILaunchConfigurationWorkingCopy ec2LaunchConfig = null; String amiId = null; if (this.amiList != null && this.amiList.size() > 0) { amiId = this.amiList.get(0).getImageId(); } ILaunchConfiguration savedLaunchConfig = null; try { ILaunchConfiguration[] launchConfigurations = manager.getLaunchConfigurations(type); String launchName = createUniqueName(launchConfigurations, amiId, 0); String awsAccessId = null; EC2AMIImage ami = this.amiList.get(0); if (ami != null) { EC2AMIImage ec2AMIImage = ami; EC2Service ec2Service = ec2AMIImage.getEC2Service(); AWSVirtualOrganization awsVo = (AWSVirtualOrganization) ec2Service.getParent(); try { awsAccessId = awsVo.getProperties().getAwsAccessId(); } catch (ProblemException problemEx) { Activator.log("Could not read aws vo properties", problemEx); //$NON-NLS-1$ } } ec2LaunchConfig = type.newInstance(null, launchName); ec2LaunchConfig.setAttribute(IEC2LaunchConfigurationConstants.AMI_ID, amiId); ec2LaunchConfig.setAttribute(IEC2LaunchConfigurationConstants.AWS_ACCESS_ID, awsAccessId); savedLaunchConfig = ec2LaunchConfig.doSave(); } catch (CoreException coreEx) { Activator.log("Could not initiate launch wizard", coreEx); //$NON-NLS-1$ } DebugUITools.openLaunchConfigurationDialog(this.workbenchPart.getSite().getShell(), savedLaunchConfig, LaunchAMI.EXTERNAL_TOOLS_LAUNCH_GROUP, null); } } /** * Checks if the passed name already exists in the launch configuration list. * If this is the case, the number i is appended and the method * {@link #createUniqueName(ILaunchConfiguration[], String, int)} is called * recursively. * * @param launchConfigurations the list of {@link ILaunchConfiguration}s to * check against * @param amiId the name to check * @param i the current index of the AMI * @return the unique name */ private String createUniqueName(final ILaunchConfiguration[] launchConfigurations, final String amiId, int i) { String tempAmi = amiId; if (i > 0) { tempAmi = amiId + " (" + i + ")"; //$NON-NLS-1$//$NON-NLS-2$ } for (ILaunchConfiguration existingLaunchConfig : launchConfigurations) { if (existingLaunchConfig.getName().equals(tempAmi)) { i++; return createUniqueName(launchConfigurations, amiId, i); } } return tempAmi; } public void selectionChanged(final IAction action, final ISelection selection) { boolean enable = false; this.amiList.clear(); if (selection instanceof IStructuredSelection) { IStructuredSelection structuredSelection = (IStructuredSelection) selection; for (Object element : structuredSelection.toList()) { if (element instanceof EC2AMIImage) { EC2AMIImage amiImage = (EC2AMIImage) element; this.amiList.add(amiImage); } } } if (this.amiList.size() == 1) { enable = true; } action.setEnabled(enable); } }