1 | # -*- coding: utf-8 -*- |
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2 | ## |
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3 | ## $Id: schedule.py,v 1.75 2009/06/19 14:51:33 pferreir Exp $ |
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4 | ## |
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5 | ## This file is part of CDS Indico. |
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6 | ## Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007 CERN. |
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7 | ## |
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8 | ## CDS Indico is free software; you can redistribute it and/or |
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9 | ## modify it under the terms of the GNU General Public License as |
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10 | ## published by the Free Software Foundation; either version 2 of the |
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11 | ## License, or (at your option) any later version. |
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12 | ## |
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13 | ## CDS Indico is distributed in the hope that it will be useful, but |
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14 | ## WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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16 | ## General Public License for more details. |
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17 | ## |
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18 | ## You should have received a copy of the GNU General Public License |
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19 | ## along with CDS Indico; if not, write to the Free Software Foundation, Inc., |
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20 | ## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. |
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21 | |
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22 | """ |
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23 | """ |
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24 | import copy |
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25 | from persistent import Persistent |
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26 | from datetime import datetime,timedelta |
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27 | from MaKaC.common.Counter import Counter |
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28 | from MaKaC.errors import MaKaCError, TimingError, ParentTimingError,\ |
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29 | EntryTimingError |
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30 | from MaKaC.common import utils |
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31 | from MaKaC.trashCan import TrashCanManager |
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32 | from MaKaC.i18n import _ |
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33 | from pytz import timezone |
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34 | from MaKaC.common.utils import daysBetween |
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35 | from MaKaC.common.PickleJar import Retrieves |
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36 | from MaKaC.common.PickleJar import DictPickler |
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37 | from MaKaC.common.Conversion import Conversion |
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38 | from MaKaC.common.contextManager import ContextManager |
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39 | |
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40 | class Schedule: |
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41 | """base schedule class. Do NOT instantiate |
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42 | """ |
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43 | |
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44 | def __init__( self, owner ): |
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45 | pass |
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46 | |
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47 | def getEntries( self ): |
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48 | return [] |
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49 | |
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50 | def addEntry( self, entry, position=None ): |
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51 | return |
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52 | |
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53 | def removeEntry( self, entry ): |
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54 | return |
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55 | |
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56 | def getEntryPosition( self, entry ): |
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57 | return |
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58 | |
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59 | def moveEntry( self, entry, newPosition, after=1 ): |
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60 | return |
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61 | |
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62 | def getEntryLocator( self, entry ): |
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63 | return |
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64 | |
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65 | def getOwner( self ): |
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66 | return |
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67 | |
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68 | def reSchedule( self ): |
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69 | return |
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70 | |
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71 | def getEntryInPos( self, pos ): |
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72 | return None |
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73 | |
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74 | |
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75 | class TimeSchedule(Schedule, Persistent): |
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76 | """ |
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77 | """ |
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78 | |
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79 | def __init__(self,owner): |
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80 | self._entries=[] |
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81 | self._owner=owner |
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82 | self._entryGen=Counter() |
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83 | self._v_allowReSchedule=True |
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84 | self._allowParallel=True |
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85 | |
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86 | def notifyModification(self): |
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87 | self.getOwner().notifyModification() |
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88 | |
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89 | @Retrieves(['MaKaC.schedule.TimeSchedule', |
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90 | 'MaKaC.schedule.ConferenceSchedule'], 'entries', isPicklableObject=True) |
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91 | def getEntries( self ): |
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92 | return self._entries |
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93 | |
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94 | def hasEntriesBefore(self,d): |
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95 | """Tells wether there is any entry before the specified date |
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96 | """ |
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97 | entries=self.getEntries() |
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98 | if len(entries)==0: |
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99 | return False |
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100 | return entries[0].getStartDate()<d |
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101 | |
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102 | def hasEntriesAfter(self,d): |
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103 | """Tells wether there is any entry after the specified date |
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104 | """ |
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105 | entries=self.getEntries() |
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106 | if len(entries)==0: |
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107 | return False |
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108 | return self.calculateEndDate()>d |
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109 | |
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110 | def checkSanity( self ): |
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111 | if self.hasEntriesBefore(self.getStartDate()) or self.hasEntriesAfter(self.getEndDate()): |
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112 | raise TimingError("Sorry, cannot perform this date change: Some entries in the timetable would be outside the new dates [conference id => %s ]"%(self.getOwner().getConference().getId())) |
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113 | |
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114 | def isOutside(self,entry): |
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115 | """Tells whether an entry is outside the date boundaries of the schedule |
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116 | """ |
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117 | ###################################### |
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118 | # Fermi timezone awareness # |
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119 | ###################################### |
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120 | if entry.getStartDate() is not None: |
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121 | if entry.getStartDate()<self.getStartDate('UTC') or \ |
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122 | entry.getStartDate()>self.getEndDate('UTC'): |
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123 | return True |
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124 | if entry.getEndDate() is not None: |
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125 | if entry.getEndDate()<self.getStartDate('UTC') or \ |
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126 | entry.getEndDate()>self.getEndDate('UTC'): |
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127 | return True |
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128 | return False |
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129 | |
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130 | def hasEntry(self,entry): |
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131 | return entry.isScheduled() and entry.getSchedule()==self and\ |
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132 | entry in self._entries |
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133 | |
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134 | def _addEntry(self,entry,check=2): |
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135 | """check parameter: |
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136 | 0: no check at all |
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137 | 1: check and raise error in case of problem |
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138 | 2: check and adapt the owner dates""" |
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139 | |
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140 | if entry.isScheduled(): |
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141 | # remove it from the old schedule and add it to this one |
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142 | entry.getSchedule().removeEntry(entry) |
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143 | |
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144 | owner = self.getOwner() |
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145 | tz = owner.getConference().getTimezone() |
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146 | |
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147 | # If user has entered start date use these dates |
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148 | # if the entry has not a pre-defined start date we try to find a place |
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149 | # within the schedule to allocate it |
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150 | if entry.getStartDate() is None: |
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151 | sDate=self.findFirstFreeSlot(entry.getDuration()) |
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152 | if sDate is None: |
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153 | if check==2: |
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154 | newEndDate = self.getEndDate() + entry.getDuration() |
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155 | |
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156 | ContextManager.get('autoOps').append((owner, |
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157 | "OWNER_END_DATE_EXTENDED", |
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158 | owner, |
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159 | newEndDate.astimezone(timezone(tz)))) |
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160 | |
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161 | owner.setEndDate(newEndDate, check) |
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162 | sDate = self.findFirstFreeSlot(entry.getDuration()) |
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163 | if sDate is None: |
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164 | raise ParentTimingError( _("There is not enough time found to add this entry in the schedule (duration: %s)")%entry.getDuration(), _("Add Entry")) |
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165 | entry.setStartDate(sDate) |
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166 | #if the entry has a pre-defined start date we must make sure that it is |
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167 | # not outside the boundaries of the schedule |
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168 | else: |
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169 | if entry.getStartDate() < self.getStartDate('UTC'): |
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170 | if check==1: |
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171 | raise TimingError( _("Cannot schedule this entry because its start date (%s) is before its parents (%s)")%(entry.getStartDate(),self.getStartDate('UTC')),_("Add Entry")) |
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172 | elif check == 2: |
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173 | ContextManager.get('autoOps').append((owner, |
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174 | "OWNER_START_DATE_EXTENDED", |
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175 | owner, |
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176 | entry.getAdjustedStartDate(tz=tz))) |
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177 | owner.setStartDate(entry.getStartDate(),check) |
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178 | elif entry.getEndDate()>self.getEndDate('UTC'): |
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179 | if check==1: |
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180 | raise TimingError( _("Cannot schedule this entry because its end date (%s) is after its parents (%s)")%(entry.getEndDate(),self.getEndDate('UTC')),_("Add Entry")) |
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181 | elif check == 2: |
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182 | ContextManager.get('autoOps').append((owner, |
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183 | "OWNER_END_DATE_EXTENDED", |
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184 | owner, |
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185 | entry.getAdjustedEndDate(tz=tz))) |
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186 | owner.setEndDate(entry.getEndDate(),check) |
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187 | #we make sure the entry end date does not go outside the schedule |
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188 | # boundaries |
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189 | if entry.getEndDate() is not None and \ |
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190 | (entry.getEndDate()<self.getStartDate('UTC') or \ |
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191 | entry.getEndDate()>self.getEndDate('UTC')): |
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192 | raise TimingError( _("Cannot schedule this entry because its end date (%s) is after its parents (%s)")%(entry.getEndDate(),self.getEndDate()), _("Add Entry")) |
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193 | self._entries.append(entry) |
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194 | entry.setSchedule(self,self._getNewEntryId()) |
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195 | self.reSchedule() |
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196 | self._p_changed = 1 |
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197 | |
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198 | def _setEntryDuration(self,entry): |
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199 | if entry.getDuration() is None: |
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200 | entry.setDuration(0,5) |
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201 | |
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202 | def addEntry(self,entry): |
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203 | if (entry is None) or self.hasEntry(entry): |
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204 | return |
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205 | self._setEntryDuration(entry) |
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206 | result = self._addEntry(entry) |
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207 | self._p_changed = 1 |
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208 | return result |
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209 | |
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210 | def _removeEntry(self,entry): |
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211 | self._entries.remove(entry) |
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212 | entry.setSchedule(None,"") |
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213 | entry.setStartDate(None) |
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214 | entry.delete() |
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215 | self._p_changed = 1 |
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216 | |
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217 | def removeEntry(self,entry): |
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218 | if entry is None or not self.hasEntry(entry): |
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219 | return |
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220 | self._removeEntry(entry) |
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221 | |
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222 | def getEntryPosition( self, entry ): |
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223 | return self._entries.index( entry ) |
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224 | |
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225 | def getOwner( self ): |
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226 | return self._owner |
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227 | |
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228 | #################################### |
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229 | # Fermi timezone awareness # |
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230 | #################################### |
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231 | |
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232 | def getStartDate( self ,tz='UTC'): |
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233 | return self.getOwner().getAdjustedStartDate(tz) |
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234 | |
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235 | @Retrieves(['MaKaC.schedule.TimeSchedule', |
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236 | 'MaKaC.schedule.ConferenceSchedule'], 'startDate', Conversion.datetime) |
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237 | def getAdjustedStartDate( self, tz=None ): |
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238 | return self.getOwner().getAdjustedStartDate(tz) |
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239 | |
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240 | def getEndDate( self, tz='UTC'): |
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241 | return self.getOwner().getAdjustedEndDate(tz) |
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242 | |
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243 | @Retrieves(['MaKaC.schedule.TimeSchedule', |
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244 | 'MaKaC.schedule.ConferenceSchedule'], 'endDate', Conversion.datetime) |
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245 | def getAdjustedEndDate( self, tz=None): |
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246 | return self.getOwner().getAdjustedEndDate(tz) |
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247 | |
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248 | #################################### |
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249 | # Fermi timezone awareness(end) # |
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250 | #################################### |
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251 | |
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252 | def cmpEntries(self,e1,e2): |
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253 | return cmp(e1.getStartDate(),e2.getStartDate()) |
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254 | |
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255 | def reSchedule(self): |
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256 | try: |
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257 | if self._allowParalell: |
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258 | pass |
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259 | except AttributeError: |
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260 | self._allowParallel=True |
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261 | try: |
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262 | if self._v_allowReSchedule: |
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263 | pass |
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264 | except AttributeError: |
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265 | self._v_allowReSchedule=True |
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266 | if self._v_allowReSchedule: |
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267 | self._v_allowReSchedule=False |
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268 | self._entries.sort(self.cmpEntries) |
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269 | lastEntry=None |
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270 | for entry in self._entries: |
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271 | if lastEntry is not None: |
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272 | if not self._allowParallel: |
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273 | if lastEntry.collides(entry): |
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274 | entry.setStartDate(lastEntry.getEndDate()) |
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275 | lastEntry=entry |
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276 | self._v_allowReSchedule=True |
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277 | self._p_changed = 1 |
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278 | |
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279 | def calculateEndDate( self ): |
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280 | if len(self._entries) == 0: |
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281 | return self.getStartDate() |
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282 | eDate = self.getStartDate() |
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283 | for entry in self._entries: |
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284 | if entry.getEndDate()>eDate: |
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285 | eDate = entry.getEndDate() |
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286 | return eDate |
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287 | |
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288 | def calculateStartDate( self ): |
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289 | if len(self._entries) == 0: |
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290 | return self.getStartDate() |
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291 | else: |
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292 | return self._entries[0].getStartDate() |
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293 | |
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294 | def getTimezone( self ): |
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295 | return self.getOwner().getConference().getTimezone() |
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296 | |
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297 | def getFirstFreeSlotOnDay(self,day): |
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298 | if not day.tzinfo: |
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299 | day = timezone(self.getTimezone()).localize(day) |
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300 | tz = day.tzinfo |
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301 | entries = self.getEntriesOnDay(day) |
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302 | if len(entries)==0: |
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303 | if self.getStartDate().astimezone(tz).date() == day.date(): |
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304 | return self.getStartDate().astimezone(tz) |
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305 | return day.astimezone(timezone(self.getTimezone())).replace(hour=8,minute=0).astimezone(tz) |
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306 | else: |
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307 | return self.calculateDayEndDate(day) |
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308 | |
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309 | def calculateDayEndDate(self,day,hour=0,min=0): |
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310 | if day is None: |
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311 | return self.calculateEndDate() |
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312 | if not day.tzinfo: |
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313 | day = timezone(self.getTimezone()).localize(day) |
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314 | tz = day.tzinfo |
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315 | maxDate=day.replace(hour=hour,minute=min) |
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316 | entries = self.getEntriesOnDay(day) |
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317 | if hour != 0 or min != 0: |
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318 | return maxDate |
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319 | elif len(entries)==0: |
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320 | confstime = self.getOwner().getAdjustedStartDate() |
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321 | return day.astimezone(timezone(self.getTimezone())).replace(hour=confstime.hour,minute=confstime.minute).astimezone(tz) |
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322 | else: |
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323 | for entry in entries: |
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324 | if entry.getEndDate()>maxDate: |
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325 | maxDate=entry.getEndDate().astimezone(tz) |
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326 | if maxDate.date() != day.date(): |
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327 | maxDate = day.replace(hour=23,minute=59) |
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328 | return maxDate |
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329 | |
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330 | def calculateDayStartDate( self, day ): |
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331 | # |
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332 | # This determines where the times start on the time table. |
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333 | # day is a tz aware datetime |
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334 | if not day.tzinfo: |
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335 | day = timezone(self.getTimezone()).localize(day) |
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336 | tz = day.tzinfo |
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337 | entries = self.getEntriesOnDay(day) |
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338 | if len(entries) == 0: |
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339 | return timezone(self.getTimezone()).localize(datetime(day.year,day.month,day.day,8,0)).astimezone(tz) |
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340 | else: |
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341 | for entry in entries: |
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342 | if entry.getStartDate().astimezone(tz).date() >= day.date(): |
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343 | return entry.getStartDate().astimezone(tz) |
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344 | else: |
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345 | return day.replace(hour=0,minute=0) |
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346 | |
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347 | def getEntryInPos( self, pos ): |
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348 | try: |
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349 | return self.getEntries()[int(pos)] |
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350 | except IndexError: |
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351 | return None |
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352 | |
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353 | def getEntriesOnDay( self, day ): |
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354 | """Returns a list containing all the entries which occur whithin the |
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355 | specified day. These entries will be ordered descending. |
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356 | """ |
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357 | if not day.tzinfo: |
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358 | day = timezone(self.getTimezone()).localize(day) |
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359 | res = [] |
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360 | for entry in self.getEntries(): |
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361 | if entry.inDay( day ): |
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362 | res.append( entry ) |
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363 | return res |
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364 | |
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365 | def getEntriesOnDate( self, date ): |
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366 | """Returns a list containing all the entries which occur whithin the |
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367 | specified day. These entries will be ordered descending. |
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368 | """ |
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369 | res = [] |
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370 | for entry in self.getEntries(): |
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371 | if entry.onDate( date ): |
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372 | res.append( entry ) |
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373 | return res |
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374 | |
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375 | def _getNewEntryId(self): |
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376 | try: |
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377 | if self._entryGen: |
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378 | pass |
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379 | except AttributeError: |
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380 | self._entryGen=Counter() |
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381 | return str(self._entryGen.newCount()) |
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382 | |
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383 | def getEntryById(self,id): |
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384 | for entry in self.getEntries(): |
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385 | if entry.getId()==str(id).strip(): |
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386 | return entry |
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387 | return None |
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388 | |
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389 | def hasGap(self): |
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390 | """check if schedule has gap between two entries""" |
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391 | entries = self.getEntries() |
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392 | if len(entries) > 1: |
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393 | sDate = self.getStartDate('UTC') |
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394 | for entry in entries: |
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395 | if entry.getStartDate()!=sDate: |
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396 | return True |
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397 | sDate = entry.getEndDate() |
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398 | return False |
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399 | |
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400 | def compact(self): |
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401 | """removes any overlaping among schedule entries and make them go one |
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402 | after the other without any gap |
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403 | """ |
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404 | self._v_allowReSchedule=False |
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405 | refDate=self.getStartDate('UTC') |
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406 | for entry in self._entries: |
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407 | entry.setStartDate(refDate) |
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408 | refDate=entry.getEndDate() |
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409 | self._v_allowReSchedule=True |
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410 | |
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411 | def moveUpEntry(self,entry,tz=None): |
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412 | pass |
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413 | |
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414 | def moveDownEntry(self,entry,tz=None): |
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415 | pass |
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416 | |
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417 | def rescheduleTimes(self, type, diff, tz, day=None): |
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418 | pass |
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419 | |
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420 | def clear(self): |
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421 | while len(self._entries)>0: |
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422 | self._removeEntry(self._entries[0]) |
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423 | self._p_changed = 1 |
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424 | |
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425 | |
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426 | def findFirstFreeSlot(self,reqDur=None): |
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427 | """Tries to find the first free time slot available where an entry with |
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428 | the specified duration could be placed |
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429 | """ |
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430 | d=self.getStartDate('UTC') |
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431 | for entry in self.getEntries(): |
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432 | availDur=entry.getStartDate()-d |
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433 | if availDur!=0: |
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434 | if reqDur is not None and reqDur!=0: |
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435 | if reqDur<=availDur: |
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436 | return d |
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437 | else: |
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438 | return d |
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439 | d=entry.getEndDate() |
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440 | availDur=self.getEndDate()-d |
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441 | if availDur!=0: |
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442 | if reqDur is not None and reqDur!=0: |
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443 | if reqDur<=availDur: |
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444 | return d |
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445 | else: |
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446 | return d |
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447 | |
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