bundles/org.eclipse.equinox.p2.installer/src/org/eclipse/equinox/internal/p2/installer/InstallApplication.java - equinox/rt.equinox.p2 - Git at Google

 /*******************************************************************************
  *  Copyright (c) 2007, 2010 IBM Corporation and others.
  *  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
  *
  *  Contributors:
  *     IBM Corporation - initial API and implementation
  *     Code 9 - ongoing development
  *******************************************************************************/
 package org.eclipse.equinox.internal.p2.installer;

 import java.io.IOException;
 import java.lang.reflect.InvocationTargetException;
 import org.eclipse.core.net.proxy.IProxyService;
 import org.eclipse.core.runtime.*;
 import org.eclipse.equinox.app.IApplication;
 import org.eclipse.equinox.app.IApplicationContext;
 import org.eclipse.equinox.internal.p2.core.helpers.LogHelper;
 import org.eclipse.equinox.internal.p2.installer.ui.SWTInstallAdvisor;
 import org.eclipse.equinox.internal.provisional.p2.installer.InstallAdvisor;
 import org.eclipse.equinox.internal.provisional.p2.installer.InstallDescription;
 import org.eclipse.equinox.p2.core.*;
 import org.osgi.framework.BundleContext;
 import org.osgi.framework.ServiceReference;

 /**
  * This is a simple installer application built using P2.  The application must be given
  * an "install description" as a command line argument or system property
  * ({@link #SYS_PROP_INSTALL_DESCRIPTION}).  The application reads this
  * install description, and looks for an existing profile in the local install registry that
  * matches it.  If no profile is found, it creates a new profile, and installs the root
  * IU in the install description into the profile. It may then launch the installed application,
  * depending on the specification in the install description.  If an existing profile is found,
  * the application instead performs an update on the existing profile with the new root
  * IU in the install description. Thus, an installed application can be updated by dropping
  * in a new install description file, and re-running this installer application.
  */
 public class InstallApplication implements IApplication {
 	/**
 	 * A property whose value is the URL of an install description. An install description is a file
 	 * that contains all the information required to complete the install.
 	 */
 	private static final String SYS_PROP_INSTALL_DESCRIPTION = "org.eclipse.equinox.p2.installDescription"; //$NON-NLS-1$

 	/**
 	 * The install advisor. This field is non null while the install application is running.
 	 */
 	private InstallAdvisor advisor;

 	/**
 	 * Throws an exception of severity error with the given error message.
 	 */
 	private static CoreException fail(String message, Throwable throwable) {
 		return new CoreException(new Status(IStatus.ERROR, InstallerActivator.PI_INSTALLER, message, throwable));
 	}

 	/**
 	 * Copied from ServiceHelper because we need to obtain services
 	 * before p2 has been started.
 	 */
 	public static Object getService(BundleContext context, String name) {
 		if (context == null)
 			return null;
 		ServiceReference reference = context.getServiceReference(name);
 		if (reference == null)
 			return null;
 		Object result = context.getService(reference);
 		context.ungetService(reference);
 		return result;
 	}

 	/**
 	 * Loads the install description, filling in any missing data if needed.
 	 */
 	private InstallDescription computeInstallDescription() throws CoreException {
 		InstallDescription description = fetchInstallDescription(SubMonitor.convert(null));
 		return advisor.prepareInstallDescription(description);
 	}

 	private InstallAdvisor createInstallContext() {
 		//TODO create an appropriate advisor depending on whether headless or GUI install is desired.
 		InstallAdvisor result = new SWTInstallAdvisor();
 		result.start();
 		return result;
 	}

 	/**
 	 * Fetch and return the install description to be installed.
 	 */
 	private InstallDescription fetchInstallDescription(SubMonitor monitor) throws CoreException {
 		String site = System.getProperty(SYS_PROP_INSTALL_DESCRIPTION);
 		try {
 			return InstallDescriptionParser.createDescription(site, monitor);
 		} catch (Exception e) {
 			throw fail(Messages.App_InvalidSite + site, e);
 		}
 	}

 	private IStatus getStatus(final Exception failure) {
 		Throwable cause = failure;
 		//unwrap target exception if applicable
 		if (failure instanceof InvocationTargetException) {
 			cause = ((InvocationTargetException) failure).getTargetException();
 			if (cause == null)
 				cause = failure;
 		}
 		if (cause instanceof CoreException)
 			return ((CoreException) cause).getStatus();
 		return new Status(IStatus.ERROR, InstallerActivator.PI_INSTALLER, Messages.App_Error, cause);
 	}

 	private void launchProduct(InstallDescription description) throws CoreException {
 		IPath installLocation = description.getInstallLocation();
 		IPath toRun = installLocation.append(description.getLauncherName());
 		try {
 			Runtime.getRuntime().exec(toRun.toString(), null, installLocation.toFile());
 		} catch (IOException e) {
 			throw fail(Messages.App_LaunchFailed + toRun, e);
 		}
 		//wait a few seconds to give the user a chance to read the message
 		try {
 			Thread.sleep(3000);
 		} catch (InterruptedException e) {
 			//ignore
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.equinox.app.IApplication#start(org.eclipse.equinox.app.IApplicationContext)
 	 */
 	public Object start(IApplicationContext appContext) {
 		try {
 			appContext.applicationRunning();
 			initializeProxySupport();
 			advisor = createInstallContext();
 			//fetch description of what to install
 			InstallDescription description = null;
 			try {
 				description = computeInstallDescription();
 				IProvisioningAgent agent = startAgent(description);
 				//perform long running install operation
 				InstallUpdateProductOperation operation = new InstallUpdateProductOperation(agent, description);
 				IStatus result = advisor.performInstall(operation);
 				if (!result.isOK()) {
 					LogHelper.log(result);
 					advisor.setResult(result);
 					return IApplication.EXIT_OK;
 				}
 				//just exit after a successful update
 				if (!operation.isFirstInstall())
 					return IApplication.EXIT_OK;
 				if (canAutoStart(description))
 					launchProduct(description);
 				else {
 					//notify user that the product was installed
 					//TODO present the user an option to immediately start the product
 					advisor.setResult(result);
 				}
 				agent.stop();
 			} catch (OperationCanceledException e) {
 				advisor.setResult(Status.CANCEL_STATUS);
 			} catch (Exception e) {
 				IStatus error = getStatus(e);
 				advisor.setResult(error);
 				LogHelper.log(error);
 			}
 			return IApplication.EXIT_OK;
 		} finally {
 			if (advisor != null)
 				advisor.stop();
 		}
 	}

 	private void initializeProxySupport() {
 		IProxyService proxies = (IProxyService) getService(InstallerActivator.getDefault().getContext(), IProxyService.class.getName());
 		if (proxies == null)
 			return;
 		proxies.setProxiesEnabled(true);
 		proxies.setSystemProxiesEnabled(true);
 	}

 	/**
 	 * Returns whether the configuration described by the given install
 	 * description can be started automatically.
 	 */
 	private boolean canAutoStart(InstallDescription description) {
 		if (!description.isAutoStart())
 			return false;
 		//can't start if we don't know launcher name and path
 		if (description.getLauncherName() == null || description.getInstallLocation() == null)
 			return false;
 		return advisor.promptForLaunch(description);
 	}

 	/**
 	 * Starts the p2 bundles needed to continue with the install.
 	 */
 	private IProvisioningAgent startAgent(InstallDescription description) throws CoreException {
 		IPath installLocation = description.getInstallLocation();
 		if (installLocation == null)
 			throw fail(Messages.App_NoInstallLocation, null);
 		//set agent location if specified
 		IPath agentLocation = description.getAgentLocation();
 		try {
 			IProvisioningAgentProvider provider = (IProvisioningAgentProvider) getService(InstallerActivator.getDefault().getContext(), IProvisioningAgentProvider.SERVICE_NAME);
 			return provider.createAgent(agentLocation == null ? null : agentLocation.toFile().toURI());
 		} catch (ProvisionException e) {
 			throw fail(Messages.App_FailedStart, e);
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.equinox.app.IApplication#stop()
 	 */
 	public void stop() {
 		//note this method can be called from another thread
 		InstallAdvisor tempContext = advisor;
 		if (tempContext != null) {
 			tempContext.stop();
 			advisor = null;
 		}
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2007, 2010 IBM Corporation and others.
	* 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
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	* Code 9 - ongoing development
	*******************************************************************************/
	package org.eclipse.equinox.internal.p2.installer;

	import java.io.IOException;
	import java.lang.reflect.InvocationTargetException;
	import org.eclipse.core.net.proxy.IProxyService;
	import org.eclipse.core.runtime.*;
	import org.eclipse.equinox.app.IApplication;
	import org.eclipse.equinox.app.IApplicationContext;
	import org.eclipse.equinox.internal.p2.core.helpers.LogHelper;
	import org.eclipse.equinox.internal.p2.installer.ui.SWTInstallAdvisor;
	import org.eclipse.equinox.internal.provisional.p2.installer.InstallAdvisor;
	import org.eclipse.equinox.internal.provisional.p2.installer.InstallDescription;
	import org.eclipse.equinox.p2.core.*;
	import org.osgi.framework.BundleContext;
	import org.osgi.framework.ServiceReference;

	/**
	* This is a simple installer application built using P2. The application must be given
	* an "install description" as a command line argument or system property
	* ({@link #SYS_PROP_INSTALL_DESCRIPTION}). The application reads this
	* install description, and looks for an existing profile in the local install registry that
	* matches it. If no profile is found, it creates a new profile, and installs the root
	* IU in the install description into the profile. It may then launch the installed application,
	* depending on the specification in the install description. If an existing profile is found,
	* the application instead performs an update on the existing profile with the new root
	* IU in the install description. Thus, an installed application can be updated by dropping
	* in a new install description file, and re-running this installer application.
	*/
	public class InstallApplication implements IApplication {
	/**
	* A property whose value is the URL of an install description. An install description is a file
	* that contains all the information required to complete the install.
	*/
	private static final String SYS_PROP_INSTALL_DESCRIPTION = "org.eclipse.equinox.p2.installDescription"; //$NON-NLS-1$

	/**
	* The install advisor. This field is non null while the install application is running.
	*/
	private InstallAdvisor advisor;

	/**
	* Throws an exception of severity error with the given error message.
	*/
	private static CoreException fail(String message, Throwable throwable) {
	return new CoreException(new Status(IStatus.ERROR, InstallerActivator.PI_INSTALLER, message, throwable));
	}

	/**
	* Copied from ServiceHelper because we need to obtain services
	* before p2 has been started.
	*/
	public static Object getService(BundleContext context, String name) {
	if (context == null)
	return null;
	ServiceReference reference = context.getServiceReference(name);
	if (reference == null)
	return null;
	Object result = context.getService(reference);
	context.ungetService(reference);
	return result;
	}

	/**
	* Loads the install description, filling in any missing data if needed.
	*/
	private InstallDescription computeInstallDescription() throws CoreException {
	InstallDescription description = fetchInstallDescription(SubMonitor.convert(null));
	return advisor.prepareInstallDescription(description);
	}

	private InstallAdvisor createInstallContext() {
	//TODO create an appropriate advisor depending on whether headless or GUI install is desired.
	InstallAdvisor result = new SWTInstallAdvisor();
	result.start();
	return result;
	}

	/**
	* Fetch and return the install description to be installed.
	*/
	private InstallDescription fetchInstallDescription(SubMonitor monitor) throws CoreException {
	String site = System.getProperty(SYS_PROP_INSTALL_DESCRIPTION);
	try {
	return InstallDescriptionParser.createDescription(site, monitor);
	} catch (Exception e) {
	throw fail(Messages.App_InvalidSite + site, e);
	}
	}

	private IStatus getStatus(final Exception failure) {
	Throwable cause = failure;
	//unwrap target exception if applicable
	if (failure instanceof InvocationTargetException) {
	cause = ((InvocationTargetException) failure).getTargetException();
	if (cause == null)
	cause = failure;
	}
	if (cause instanceof CoreException)
	return ((CoreException) cause).getStatus();
	return new Status(IStatus.ERROR, InstallerActivator.PI_INSTALLER, Messages.App_Error, cause);
	}

	private void launchProduct(InstallDescription description) throws CoreException {
	IPath installLocation = description.getInstallLocation();
	IPath toRun = installLocation.append(description.getLauncherName());
	try {
	Runtime.getRuntime().exec(toRun.toString(), null, installLocation.toFile());
	} catch (IOException e) {
	throw fail(Messages.App_LaunchFailed + toRun, e);
	}
	//wait a few seconds to give the user a chance to read the message
	try {
	Thread.sleep(3000);
	} catch (InterruptedException e) {
	//ignore
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.equinox.app.IApplication#start(org.eclipse.equinox.app.IApplicationContext)
	*/
	public Object start(IApplicationContext appContext) {
	try {
	appContext.applicationRunning();
	initializeProxySupport();
	advisor = createInstallContext();
	//fetch description of what to install
	InstallDescription description = null;
	try {
	description = computeInstallDescription();
	IProvisioningAgent agent = startAgent(description);
	//perform long running install operation
	InstallUpdateProductOperation operation = new InstallUpdateProductOperation(agent, description);
	IStatus result = advisor.performInstall(operation);
	if (!result.isOK()) {
	LogHelper.log(result);
	advisor.setResult(result);
	return IApplication.EXIT_OK;
	}
	//just exit after a successful update
	if (!operation.isFirstInstall())
	return IApplication.EXIT_OK;
	if (canAutoStart(description))
	launchProduct(description);
	else {
	//notify user that the product was installed
	//TODO present the user an option to immediately start the product
	advisor.setResult(result);
	}
	agent.stop();
	} catch (OperationCanceledException e) {
	advisor.setResult(Status.CANCEL_STATUS);
	} catch (Exception e) {
	IStatus error = getStatus(e);
	advisor.setResult(error);
	LogHelper.log(error);
	}
	return IApplication.EXIT_OK;
	} finally {
	if (advisor != null)
	advisor.stop();
	}
	}

	private void initializeProxySupport() {
	IProxyService proxies = (IProxyService) getService(InstallerActivator.getDefault().getContext(), IProxyService.class.getName());
	if (proxies == null)
	return;
	proxies.setProxiesEnabled(true);
	proxies.setSystemProxiesEnabled(true);
	}

	/**
	* Returns whether the configuration described by the given install
	* description can be started automatically.
	*/
	private boolean canAutoStart(InstallDescription description) {
	if (!description.isAutoStart())
	return false;
	//can't start if we don't know launcher name and path
	if (description.getLauncherName() == null \|\| description.getInstallLocation() == null)
	return false;
	return advisor.promptForLaunch(description);
	}

	/**
	* Starts the p2 bundles needed to continue with the install.
	*/
	private IProvisioningAgent startAgent(InstallDescription description) throws CoreException {
	IPath installLocation = description.getInstallLocation();
	if (installLocation == null)
	throw fail(Messages.App_NoInstallLocation, null);
	//set agent location if specified
	IPath agentLocation = description.getAgentLocation();
	try {
	IProvisioningAgentProvider provider = (IProvisioningAgentProvider) getService(InstallerActivator.getDefault().getContext(), IProvisioningAgentProvider.SERVICE_NAME);
	return provider.createAgent(agentLocation == null ? null : agentLocation.toFile().toURI());
	} catch (ProvisionException e) {
	throw fail(Messages.App_FailedStart, e);
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.equinox.app.IApplication#stop()
	*/
	public void stop() {
	//note this method can be called from another thread
	InstallAdvisor tempContext = advisor;
	if (tempContext != null) {
	tempContext.stop();
	advisor = null;
	}
	}
	}