package bndtools.launch.bnd;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Callable;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.Status;
import org.eclipse.debug.core.DebugPlugin;
import org.eclipse.debug.core.ILaunch;
import org.eclipse.debug.core.ILaunchConfiguration;
import org.eclipse.debug.core.IStatusHandler;
import org.eclipse.debug.core.model.IProcess;
import org.eclipse.jdt.internal.launching.JavaRemoteApplicationLaunchConfigurationDelegate;
import org.eclipse.jdt.launching.IJavaLaunchConfigurationConstants;
import aQute.bnd.build.Project;
import aQute.bnd.build.ProjectLauncher;
import aQute.bnd.build.Run;
import aQute.bnd.build.RunSession;
import aQute.bnd.osgi.Processor;
import aQute.lib.io.IO;
import bndtools.Plugin;
import bndtools.central.Central;
import bndtools.launch.LaunchConstants;
import bndtools.launch.ui.internal.LaunchStatusHandler;
import bndtools.launch.util.LaunchUtils;
import bndtools.preferences.BndPreferences;
/**
* The link between the Eclipse launching subsystem and the bnd launcher. We bypass the standard Eclipse launching and
* will always setup the launch as a bnd launch and attach the debugger if necessary. This has the advantage we can add
* features in bnd and we are sure fidelity is maintained.
*/
public class NativeBndLaunchDelegate extends JavaRemoteApplicationLaunchConfigurationDelegate {
volatile boolean canceled = false;
/*
* The Eclipse launch interface.
*/
@Override
public void launch(ILaunchConfiguration configuration, String mode, final ILaunch launch, IProgressMonitor m) throws CoreException {
final IProgressMonitor monitor = m == null ? new NullProgressMonitor() : m;
Callable<Boolean> isCancelled = new Callable<Boolean>() {
@Override
public Boolean call() throws Exception {
return canceled || monitor.isCanceled();
}
};
Processor p = new Processor();
try {
monitor.setTaskName("Detecting if configuration is already launched");
if (isAlreadyRunning(configuration)) {
return;
}
String target = configuration.getAttribute(LaunchConstants.ATTR_LAUNCH_TARGET, (String) null);
if (target == null || target.length() == 0) {
p.error("No target specified in the launch configuration");
return;
}
IResource targetResource = ResourcesPlugin.getWorkspace().getRoot().findMember(target);
if (targetResource == null) {
p.error("No actual resource found for " + target);
return;
}
IProject parent = targetResource.getProject();
if (parent == null) {
p.error("Not part of a project " + targetResource);
return;
}
Project parentModel = Central.getProject(parent);
if (parentModel == null) {
p.error("Cannot locate Bnd project for " + targetResource);
return;
}
Project model;
if (targetResource.getName().equals(Project.BNDFILE)) {
model = parentModel;
} else {
File file = targetResource.getLocation().toFile();
if (file == null || !file.isFile()) {
p.error("No file associated with the entry " + targetResource);
return;
}
model = new Run(parentModel.getWorkspace(), parentModel.getBase(), file);
}
monitor.setTaskName("Target is " + model);
boolean debug = "debug".equals(mode);
try {
List<LaunchThread> lts = new ArrayList<LaunchThread>();
ProjectLauncher projectLauncher = model.getProjectLauncher();
try {
List< ? extends RunSession> sessions = projectLauncher.getRunSessions();
if (sessions == null) {
projectLauncher.error("This launcher for %s cannot handle the new style", target);
return;
}
for (RunSession session : sessions)
try {
monitor.setTaskName("validating session " + session.getLabel());
if (!session.validate(isCancelled)) {
continue;
}
LaunchThread lt = new LaunchThread(projectLauncher, session, launch);
if (debug) {
lt.doDebug(monitor);
}
if (monitor.isCanceled())
return;
launch.addProcess(lt);
lts.add(lt);
} catch (Exception e) {
projectLauncher.exception(e, "Starting session %s in project %s", session.getName(), model);
}
} catch (Exception e) {
projectLauncher.exception(e, "starting processes");
} finally {
p.getInfo(projectLauncher);
}
if (!p.isOk()) {
IStatus status = Central.toStatus(projectLauncher, "Errors detected during the launch");
IStatusHandler prompter = DebugPlugin.getDefault().getStatusHandler(status);
Boolean cont = (Boolean) prompter.handleStatus(status, null);
if (cont == null || !cont || monitor.isCanceled()) {
launch.terminate();
return;
}
}
for (LaunchThread lt : lts) {
lt.start();
}
} catch (Exception e) {
launch.terminate();
abort("Internal error", e, IJavaLaunchConfigurationConstants.ERR_INTERNAL_ERROR);
}
} catch (Exception e) {
p.exception(e, "While starting a launch %s", configuration);
} finally {
if (!p.isOk()) {
IStatus status = Central.toStatus(p, "Errors detected during the launch");
IStatusHandler prompter = new LaunchStatusHandler();
prompter.handleStatus(status, null);
launch.terminate();
}
monitor.done();
IO.close(p);
}
}
/**
* Check if we already have a configuration running
*/
public boolean isAlreadyRunning(ILaunchConfiguration configuration) throws CoreException {
// Check for existing launches of same resource
BndPreferences prefs = new BndPreferences();
if (prefs.getWarnExistingLaunches()) {
IResource launchResource = LaunchUtils.getTargetResource(configuration);
if (launchResource == null)
return false;
int processCount = 0;
for (ILaunch l : DebugPlugin.getDefault().getLaunchManager().getLaunches()) {
// ... is it the same launch resource?
ILaunchConfiguration launchConfig = l.getLaunchConfiguration();
if (launchConfig == null) {
continue;
}
if (launchResource.equals(LaunchUtils.getTargetResource(launchConfig))) {
// Iterate existing processes
for (IProcess process : l.getProcesses()) {
if (!process.isTerminated())
processCount++;
}
}
}
// Warn if existing processes running
if (processCount > 0) {
Status status = new Status(IStatus.WARNING, Plugin.PLUGIN_ID, 0,
"One or more OSGi Frameworks have already been launched for this configuration. Additional framework instances may interfere with each other due to the shared storage directory.", null);
IStatusHandler prompter = DebugPlugin.getDefault().getStatusHandler(status);
if (prompter != null) {
boolean okay = (Boolean) prompter.handleStatus(status, launchResource);
return !okay;
}
}
}
return false;
}
}