| /******************************************************************************* |
| * Copyright (c) 2000, 2007 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 |
| *******************************************************************************/ |
| package org.eclipse.update.internal.scheduler; |
| |
| import java.lang.reflect.Constructor; |
| import java.util.Calendar; |
| |
| import org.eclipse.core.runtime.Preferences; |
| import org.eclipse.core.runtime.jobs.IJobChangeListener; |
| import org.eclipse.core.runtime.jobs.Job; |
| import org.eclipse.ui.IStartup; |
| |
| /** |
| * This plug-in is loaded on startup to fork a job that searches for new |
| * plug-ins. |
| */ |
| public class SchedulerStartup implements IStartup { |
| // Preferences |
| public static final String P_ENABLED = "enabled"; //$NON-NLS-1$ |
| |
| public static final String P_SCHEDULE = "schedule"; //$NON-NLS-1$ |
| |
| public static final String VALUE_ON_STARTUP = "on-startup"; //$NON-NLS-1$ |
| |
| public static final String VALUE_ON_SCHEDULE = "on-schedule"; //$NON-NLS-1$ |
| |
| public static final String P_DOWNLOAD = "download"; // value is true or false, default isfalse //$NON-NLS-1$ |
| |
| // values are to be picked up from the arryas DAYS and HOURS |
| public static final String P_DAY = "day"; //$NON-NLS-1$ |
| |
| public static final String P_HOUR = "hour"; //$NON-NLS-1$ |
| |
| // Keeps track of the running job |
| private Job job; |
| |
| static final Object automaticJobFamily = new Object(); |
| |
| // Listener for job changes |
| private IJobChangeListener jobListener; |
| |
| public static final String[] DAYS = { |
| UpdateSchedulerMessages.SchedulerStartup_day, |
| UpdateSchedulerMessages.SchedulerStartup_Monday, |
| UpdateSchedulerMessages.SchedulerStartup_Tuesday, |
| UpdateSchedulerMessages.SchedulerStartup_Wednesday, |
| UpdateSchedulerMessages.SchedulerStartup_Thursday, |
| UpdateSchedulerMessages.SchedulerStartup_Friday, |
| UpdateSchedulerMessages.SchedulerStartup_Saturday, |
| UpdateSchedulerMessages.SchedulerStartup_Sunday }; |
| |
| public static final String[] HOURS = { |
| UpdateSchedulerMessages.SchedulerStartup_1AM, |
| UpdateSchedulerMessages.SchedulerStartup_2AM, |
| UpdateSchedulerMessages.SchedulerStartup_3AM, |
| UpdateSchedulerMessages.SchedulerStartup_4AM, |
| UpdateSchedulerMessages.SchedulerStartup_5AM, |
| UpdateSchedulerMessages.SchedulerStartup_6AM, |
| UpdateSchedulerMessages.SchedulerStartup_7AM, |
| UpdateSchedulerMessages.SchedulerStartup_8AM, |
| UpdateSchedulerMessages.SchedulerStartup_9AM, |
| UpdateSchedulerMessages.SchedulerStartup_10AM, |
| UpdateSchedulerMessages.SchedulerStartup_11AM, |
| UpdateSchedulerMessages.SchedulerStartup_12PM, |
| UpdateSchedulerMessages.SchedulerStartup_1PM, |
| UpdateSchedulerMessages.SchedulerStartup_2PM, |
| UpdateSchedulerMessages.SchedulerStartup_3PM, |
| UpdateSchedulerMessages.SchedulerStartup_4PM, |
| UpdateSchedulerMessages.SchedulerStartup_5PM, |
| UpdateSchedulerMessages.SchedulerStartup_6PM, |
| UpdateSchedulerMessages.SchedulerStartup_7PM, |
| UpdateSchedulerMessages.SchedulerStartup_8PM, |
| UpdateSchedulerMessages.SchedulerStartup_9PM, |
| UpdateSchedulerMessages.SchedulerStartup_10PM, |
| UpdateSchedulerMessages.SchedulerStartup_11PM, |
| UpdateSchedulerMessages.SchedulerStartup_12AM, }; |
| |
| /** |
| * The constructor. |
| */ |
| public SchedulerStartup() { |
| UpdateSchedulerPlugin.setScheduler(this); |
| } |
| |
| public void earlyStartup() { |
| scheduleUpdateJob(); |
| } |
| |
| public void scheduleUpdateJob() { |
| Preferences pref = UpdateSchedulerPlugin.getDefault() |
| .getPluginPreferences(); |
| // See if automatic search is enabled at all |
| if (pref.getBoolean(P_ENABLED) == false) |
| return; |
| |
| String schedule = pref.getString(P_SCHEDULE); |
| long delay = -1L; |
| if (schedule.equals(VALUE_ON_STARTUP)) |
| // have we already started a job ? |
| if (job == null) |
| delay = 0L; |
| else |
| delay = -1L; |
| else |
| delay = computeDelay(pref); |
| if (delay == -1L) |
| return; |
| startSearch(delay); |
| } |
| |
| private int getDay(Preferences pref) { |
| String day = pref.getString(P_DAY); |
| for (int d = 0; d < DAYS.length; d++) |
| if (DAYS[d].equals(day)) |
| switch (d) { |
| case 0: |
| return -1; |
| case 1: |
| return Calendar.MONDAY; |
| case 2: |
| return Calendar.TUESDAY; |
| case 3: |
| return Calendar.WEDNESDAY; |
| case 4: |
| return Calendar.THURSDAY; |
| case 5: |
| return Calendar.FRIDAY; |
| case 6: |
| return Calendar.SATURDAY; |
| case 7: |
| return Calendar.SUNDAY; |
| } |
| return -1; |
| } |
| |
| private int getHour(Preferences pref) { |
| String hour = pref.getString(P_HOUR); |
| for (int h = 0; h < HOURS.length; h++) |
| if (HOURS[h].equals(hour)) |
| return h + 1; |
| return 1; |
| } |
| |
| /* |
| * Computes the number of milliseconds from this moment to the next |
| * scheduled search. If that moment has already passed, returns 0L (start |
| * immediately). |
| */ |
| private long computeDelay(Preferences pref) { |
| |
| int target_d = getDay(pref); |
| int target_h = getHour(pref); |
| |
| Calendar calendar = Calendar.getInstance(); |
| // may need to use the BootLoader locale |
| int current_d = calendar.get(Calendar.DAY_OF_WEEK); |
| // starts with SUNDAY |
| int current_h = calendar.get(Calendar.HOUR_OF_DAY); |
| int current_m = calendar.get(Calendar.MINUTE); |
| int current_s = calendar.get(Calendar.SECOND); |
| int current_ms = calendar.get(Calendar.MILLISECOND); |
| |
| long delay = 0L; // milliseconds |
| |
| if (target_d == -1) { |
| // Compute the delay for "every day at x o'clock" |
| // Is it now ? |
| if (target_h == current_h && current_m == 0 && current_s == 0) |
| return delay; |
| |
| int delta_h = target_h - current_h; |
| if (target_h <= current_h) |
| delta_h += 24; |
| delay = ((delta_h * 60 - current_m) * 60 - current_s) * 1000 |
| - current_ms; |
| return delay; |
| } else { |
| // Compute the delay for "every Xday at x o'clock" |
| // Is it now ? |
| if (target_d == current_d && target_h == current_h |
| && current_m == 0 && current_s == 0) |
| return delay; |
| |
| int delta_d = target_d - current_d; |
| if (target_d < current_d |
| || target_d == current_d |
| && (target_h < current_h || target_h == current_h |
| && current_m > 0)) |
| delta_d += 7; |
| |
| delay = (((delta_d * 24 + target_h - current_h) * 60 - current_m) * 60 - current_s) |
| * 1000 - current_ms; |
| |
| return delay; |
| } |
| // return -1L; |
| } |
| |
| private void startSearch(long delay) { |
| if (job != null) { |
| // cancel old job. |
| // We need to deregister the listener first,so we won't |
| // automatically start another job |
| if (jobListener != null) |
| Job.getJobManager().removeJobChangeListener(jobListener); |
| Job.getJobManager().cancel(automaticJobFamily); |
| } |
| if (jobListener == null) { |
| // using reflection to avoid premature class loading |
| jobListener = createJobChangeAdapter(); |
| if (jobListener == null) |
| return; |
| } |
| Job.getJobManager().addJobChangeListener(jobListener); |
| String jobName = UpdateSchedulerMessages.AutomaticUpdatesJob_AutomaticUpdateSearch; //); |
| boolean download = UpdateSchedulerPlugin.getDefault() |
| .getPluginPreferences().getBoolean( |
| UpdateSchedulerPlugin.P_DOWNLOAD); |
| job = createUpdateJob(jobName, download); |
| if (job != null) |
| job.schedule(delay); |
| |
| } |
| |
| /* |
| * Loads the update job using reflection to avoid premature startup of the |
| * Update UI plug-in. |
| */ |
| |
| private Job createUpdateJob(String name, boolean download) { |
| try { |
| Class theClass = Class |
| .forName("org.eclipse.update.internal.scheduler.AutomaticUpdateJob"); //$NON-NLS-1$ |
| Constructor constructor = theClass.getConstructor(new Class[] { |
| String.class, Boolean.TYPE, Boolean.TYPE }); |
| return (Job) constructor.newInstance(new Object[] { name, |
| Boolean.TRUE, new Boolean(download) }); |
| } catch (Exception e) { |
| UpdateSchedulerPlugin.logException(e, false); |
| return null; |
| } |
| } |
| |
| /* |
| * Loads the job listener using reflection to avoid premature startup of the |
| * Update UI plug-in. |
| */ |
| private IJobChangeListener createJobChangeAdapter() { |
| try { |
| Class theClass = Class |
| .forName("org.eclipse.update.internal.scheduler.UpdateJobChangeAdapter"); //$NON-NLS-1$ |
| Constructor constructor = theClass |
| .getConstructor(new Class[] { SchedulerStartup.class }); |
| return (IJobChangeListener) constructor |
| .newInstance(new Object[] { this }); |
| } catch (Exception e) { |
| UpdateSchedulerPlugin.logException(e, false); |
| return null; |
| } |
| } |
| |
| Job getJob() { |
| return job; |
| } |
| } |