Example #1
0
        /// <summary>
        /// Attempts to start the newest version of the executable named the same thing as the executing assembly
        /// </summary>
        /// <param name="versionedDirectories"></param>
        /// <param name="versionStarted"></param>
        /// <returns></returns>
        private bool StartNewestVersion(
            Assembly executable,
            VersionedDirectory[] versionedDirectories,
            out VersionedDirectory versionStarted,
            IProgressViewer progressViewer)
        {
            versionStarted = null;

            try
            {
                // get the name of this assembly which will be what we look for to start
                string assemblyName = string.Format("{0}.exe", executable.GetName().Name);

                // will start with the newest version because they are sorted
                foreach (VersionedDirectory versionToStart in versionedDirectories)
                {
                    // format the path to the version we are going to attempt to start
                    string path = Path.Combine(versionToStart.Directory.FullName, assemblyName);

                    bool started = false;

                    // if the file exists
                    if (File.Exists(path))
                    {
                        ProgressViewer.SetExtendedDescription(progressViewer, "Bootstrap: Starting version " + versionToStart.Version.ToString() + "...");

                        Process p = new Process();
                        p.StartInfo.FileName         = path;
                        p.StartInfo.Arguments        = System.Environment.CommandLine;
                        p.StartInfo.WorkingDirectory = versionToStart.Directory.FullName;
                        p.StartInfo.WindowStyle      = Process.GetCurrentProcess().StartInfo.WindowStyle;

                        // try to start this version
                        started = p.Start();
                    }

                    // if a version was started
                    if (started)
                    {
                        // keep track of which version we started
                        versionStarted = versionToStart;
                        return(true);
                    }
                }
            }
            catch (System.Exception systemException)
            {
                System.Diagnostics.Trace.WriteLine(systemException);
            }
            return(false);
        }
Example #2
0
        private bool DeleteOlderVersions(
            VersionedDirectory[] versionedDirectories,
            VersionedDirectory versionStarted,
            IProgressViewer progressViewer)
        {
            try
            {
                // grab the newest version
                VersionedDirectory newestVersion = versionedDirectories[0];

                // loop thru and delete the oldest versions not in use
                foreach (VersionedDirectory version in versionedDirectories)
                {
                    // keep the newest version and the one that started
                    if (version != newestVersion && version != versionStarted)
                    {
                        try
                        {
                            ProgressViewer.SetExtendedDescription(progressViewer, "Bootstrap: Removing older version " + version.Version.ToString() + "...");

                            // recursively delete this version directory
                            Directory.Delete(version.Directory.FullName, true);
                        }
                        catch (System.Exception systemException)
                        {
                            System.Diagnostics.Trace.WriteLine(systemException);
                        }
                    }
                }
            }
            catch (System.Exception systemException)
            {
                System.Diagnostics.Trace.WriteLine(systemException);
            }
            return(false);
        }
Example #3
0
        public void Run(string[] args, System.Reflection.Assembly executable)
        {
            bool tracedExceptionThrown = false;

            try
            {
                using (SplashWindowThread splashThread = new SplashWindowThread(executable, false))
                {
                    splashThread.ShowAsynchronously();
                    splashThread.Window.SetMarqueeMoving(true, true);

                    ProgressViewer.SetExtendedDescription(splashThread.Window, "Bootstrap: Parsing command line...");

                    // create a new command line parsing engine
                    CommandLineParsingEngine pe = new CommandLineParsingEngine(args);

                    // determine if we are going to keep the old versions
                    bool keepOld = pe.ToBoolean("keepold");

                    // the process id of an app
                    int pid = pe.ToInt32("pid");

                    // whether we should wait on the specified pid to die before launching new version
                    bool wait = pe.ToBoolean("wait");

                    ProgressViewer.SetExtendedDescription(splashThread.Window, "Bootstrap: Searching for runnable version...");

                    // create a search for all of the subdirectories
                    Search search = new Search("Versions", Application.StartupPath, "*", false, false);

                    // find all of the directories
                    DirectoryInfo[] directories = search.GetDirectories();

                    // create versioned files around each directory that can be parsed to a version
                    VersionedDirectory[] versionedDirectories = this.CreateVersionedFiles(directories);

                    // if we have been instructed to wait on the process specified by pid to die, do it now
                    if (wait && pid != 0)
                    {
                        try
                        {
                            // snag it and wait on it to exit
                            Process p = Process.GetProcessById(pid);
                            if (p != null)
                            {
                                ProgressViewer.SetExtendedDescription(splashThread.Window, "Bootstrap: Closing previous instance...");
                                p.WaitForExit();
                            }
                        }
                        catch (System.Exception systemException)
                        {
                            System.Diagnostics.Trace.WriteLine(systemException);
                        }
                    }

                    ProgressViewer.SetExtendedDescription(splashThread.Window, "Bootstrap: Selecting latest runnable version...");

                    // try and start the newest version
                    VersionedDirectory versionStarted;
                    bool startedVersion = this.StartNewestVersion(executable, versionedDirectories, out versionStarted, splashThread.Window);
                    // this will fall back upon older versions until it runs out of versions or one of the versions starts
                    if (!startedVersion)
                    {
                        string exeName = string.Format("{0}.exe", executable.GetName().Name);
                        ExceptionEngine.DisplayException(null, "BootStrap failed for " + exeName, MessageBoxIcon.Stop, MessageBoxButtons.OK, null,
                                                         "No suitable executable was found or able to be started.");
                    }

                    // if we're not keeping the old versions
                    if (!keepOld)
                    {
                        // delete the older versions
                        if (!this.DeleteOlderVersions(versionedDirectories, versionStarted, splashThread.Window))
                        {
                            // um, who cares if we can't delete the older versions
                            // also we need to see about security rights to the directories
                        }
                    }

                    // if we started a version
                    if (startedVersion)
                    {
                        // notify that we are transferring control now to it...
                        ProgressViewer.SetExtendedDescription(splashThread.Window, "Bootstrap: Transferring control to version " + versionStarted.Version.ToString() + "...");
                    }
                }
            }
            catch (System.Exception systemException)
            {
                tracedExceptionThrown = true;
                System.Diagnostics.Trace.WriteLine(systemException);
                System.Windows.Forms.MessageBox.Show(null, systemException.ToString(), "Application Exiting");
                Application.ExitThread();
            }
            finally
            {
                System.Diagnostics.Trace.WriteLine("'" + Application.ProductName + (tracedExceptionThrown ? "' has terminated because of an exception." : "' has exited gracefully."));
            }
        }