imip-agent

Annotated imip_store.py

1059:861e86e687af
1055:9d7567e5675c
1049:1fc5f34543dc
2016-02-08 Paul Boddie file changeset files shortlog Added a test of simultaneous resource booking with recurring events and differing organiser quota limits.
paul@2 1 
#!/usr/bin/env python
paul@2 2 
 
 paul@146      3 
"""
 
 paul@146      4 
A simple filesystem-based store of calendar data.
 
 paul@146      5 
 
 paul@1039      6 
Copyright (C) 2014, 2015, 2016 Paul Boddie <paul@boddie.org.uk>
 
 paul@146      7 
 
 paul@146      8 
This program is free software; you can redistribute it and/or modify it under
 
 paul@146      9 
the terms of the GNU General Public License as published by the Free Software
 
 paul@146     10 
Foundation; either version 3 of the License, or (at your option) any later
 
 paul@146     11 
version.
 
 paul@146     12 
 
 paul@146     13 
This program is distributed in the hope that it will be useful, but WITHOUT
 
 paul@146     14 
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 
 paul@146     15 
FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
 
 paul@146     16 
details.
 
 paul@146     17 
 
 paul@146     18 
You should have received a copy of the GNU General Public License along with
 
 paul@146     19 
this program.  If not, see <http://www.gnu.org/licenses/>.
 
 paul@146     20 
"""
 
 paul@146     21 
 
 paul@30     22 
from datetime import datetime
 
 paul@1039     23 
from imiptools.config import STORE_DIR, PUBLISH_DIR, JOURNAL_DIR
 
 paul@301     24 
from imiptools.data import make_calendar, parse_object, to_stream
 
 paul@740     25 
from imiptools.dates import format_datetime, get_datetime, to_timezone
 
 paul@147     26 
from imiptools.filesys import fix_permissions, FileBase
 
 paul@458     27 
from imiptools.period import FreeBusyPeriod
 
 paul@1046     28 
from imiptools.text import parse_line
 
 paul@808     29 
from os.path import isdir, isfile, join
 
 paul@343     30 
from os import listdir, remove, rmdir
 
 paul@303     31 
from time import sleep
 
 paul@395     32 
import codecs
 
 paul@15     33 
 
 paul@1039     34 
class FileStoreBase(FileBase):
 
 paul@50     35 
 
 paul@1039     36 
    "A file store supporting user-specific locking and tabular data."
 
 paul@147     37 
 
 paul@303     38 
    def acquire_lock(self, user, timeout=None):
 
 paul@303     39 
        FileBase.acquire_lock(self, timeout, user)
 
 paul@303     40 
 
 paul@303     41 
    def release_lock(self, user):
 
 paul@303     42 
        FileBase.release_lock(self, user)
 
 paul@303     43 
 
 paul@648     44 
    # Utility methods.
 
 paul@648     45 
 
 paul@343     46 
    def _set_defaults(self, t, empty_defaults):
 
 paul@343     47 
        for i, default in empty_defaults:
 
 paul@343     48 
            if i >= len(t):
 
 paul@343     49 
                t += [None] * (i - len(t) + 1)
 
 paul@343     50 
            if not t[i]:
 
 paul@343     51 
                t[i] = default
 
 paul@343     52 
        return t
 
 paul@343     53 
 
 paul@1046     54 
    def _get_table(self, user, filename, empty_defaults=None, tab_separated=True):
 
 paul@343     55 
 
 paul@343     56 
        """
 
 paul@343     57 
        From the file for the given 'user' having the given 'filename', return
 
 paul@343     58 
        a list of tuples representing the file's contents.
 
 paul@343     59 
 
 paul@343     60 
        The 'empty_defaults' is a list of (index, value) tuples indicating the
 
 paul@343     61 
        default value where a column either does not exist or provides an empty
 
 paul@343     62 
        value.
 
 paul@1046     63 
 
 paul@1046     64 
        If 'tab_separated' is specified and is a false value, line parsing using
 
 paul@1046     65 
        the imiptools.text.parse_line function will be performed instead of
 
 paul@1046     66 
        splitting each line of the file using tab characters as separators.
 
 paul@343     67 
        """
 
 paul@343     68 
 
 paul@702     69 
        f = codecs.open(filename, "rb", encoding="utf-8")
 
 paul@702     70 
        try:
 
 paul@702     71 
            l = []
 
 paul@702     72 
            for line in f.readlines():
 
 paul@1046     73 
                line = line.strip(" \r\n")
 
 paul@1046     74 
                if tab_separated:
 
 paul@1046     75 
                    t = line.split("\t")
 
 paul@1046     76 
                else:
 
 paul@1046     77 
                    t = parse_line(line)
 
 paul@702     78 
                if empty_defaults:
 
 paul@702     79 
                    t = self._set_defaults(t, empty_defaults)
 
 paul@702     80 
                l.append(tuple(t))
 
 paul@702     81 
            return l
 
 paul@702     82 
        finally:
 
 paul@702     83 
            f.close()
 
 paul@702     84 
 
 paul@1046     85 
    def _get_table_atomic(self, user, filename, empty_defaults=None, tab_separated=True):
 
 paul@702     86 
 
 paul@702     87 
        """
 
 paul@702     88 
        From the file for the given 'user' having the given 'filename', return
 
 paul@702     89 
        a list of tuples representing the file's contents.
 
 paul@702     90 
 
 paul@702     91 
        The 'empty_defaults' is a list of (index, value) tuples indicating the
 
 paul@702     92 
        default value where a column either does not exist or provides an empty
 
 paul@702     93 
        value.
 
 paul@1046     94 
 
 paul@1046     95 
        If 'tab_separated' is specified and is a false value, line parsing using
 
 paul@1046     96 
        the imiptools.text.parse_line function will be performed instead of
 
 paul@1046     97 
        splitting each line of the file using tab characters as separators.
 
 paul@702     98 
        """
 
 paul@702     99 
 
 paul@343    100 
        self.acquire_lock(user)
 
 paul@343    101 
        try:
 
 paul@1046    102 
            return self._get_table(user, filename, empty_defaults, tab_separated)
 
 paul@343    103 
        finally:
 
 paul@343    104 
            self.release_lock(user)
 
 paul@343    105 
 
 paul@343    106 
    def _set_table(self, user, filename, items, empty_defaults=None):
 
 paul@343    107 
 
 paul@343    108 
        """
 
 paul@343    109 
        For the given 'user', write to the file having the given 'filename' the
 
 paul@343    110 
        'items'.
 
 paul@343    111 
 
 paul@343    112 
        The 'empty_defaults' is a list of (index, value) tuples indicating the
 
 paul@343    113 
        default value where a column either does not exist or provides an empty
 
 paul@343    114 
        value.
 
 paul@343    115 
        """
 
 paul@343    116 
 
 paul@702    117 
        f = codecs.open(filename, "wb", encoding="utf-8")
 
 paul@702    118 
        try:
 
 paul@702    119 
            for item in items:
 
 paul@747    120 
                self._set_table_item(f, item, empty_defaults)
 
 paul@702    121 
        finally:
 
 paul@702    122 
            f.close()
 
 paul@702    123 
            fix_permissions(filename)
 
 paul@702    124 
 
 paul@747    125 
    def _set_table_item(self, f, item, empty_defaults=None):
 
 paul@747    126 
 
 paul@747    127 
        "Set in table 'f' the given 'item', using any 'empty_defaults'."
 
 paul@747    128 
 
 paul@747    129 
        if empty_defaults:
 
 paul@747    130 
            item = self._set_defaults(list(item), empty_defaults)
 
 paul@747    131 
        f.write("\t".join(item) + "\n")
 
 paul@747    132 
 
 paul@702    133 
    def _set_table_atomic(self, user, filename, items, empty_defaults=None):
 
 paul@702    134 
 
 paul@702    135 
        """
 
 paul@702    136 
        For the given 'user', write to the file having the given 'filename' the
 
 paul@702    137 
        'items'.
 
 paul@702    138 
 
 paul@702    139 
        The 'empty_defaults' is a list of (index, value) tuples indicating the
 
 paul@702    140 
        default value where a column either does not exist or provides an empty
 
 paul@702    141 
        value.
 
 paul@702    142 
        """
 
 paul@702    143 
 
 paul@343    144 
        self.acquire_lock(user)
 
 paul@343    145 
        try:
 
 paul@702    146 
            self._set_table(user, filename, items, empty_defaults)
 
 paul@343    147 
        finally:
 
 paul@343    148 
            self.release_lock(user)
 
 paul@343    149 
 
 paul@1039    150 
class FileStore(FileStoreBase):
 
 paul@1039    151 
 
 paul@1039    152 
    "A file store of tabular free/busy data and objects."
 
 paul@1039    153 
 
 paul@1039    154 
    def __init__(self, store_dir=None):
 
 paul@1039    155 
        FileBase.__init__(self, store_dir or STORE_DIR)
 
 paul@1039    156 
 
 paul@648    157 
    # Store object access.
 
 paul@648    158 
 
 paul@329    159 
    def _get_object(self, user, filename):
 
 paul@329    160 
 
 paul@329    161 
        """
 
 paul@329    162 
        Return the parsed object for the given 'user' having the given
 
 paul@329    163 
        'filename'.
 
 paul@329    164 
        """
 
 paul@329    165 
 
 paul@329    166 
        self.acquire_lock(user)
 
 paul@329    167 
        try:
 
 paul@329    168 
            f = open(filename, "rb")
 
 paul@329    169 
            try:
 
 paul@329    170 
                return parse_object(f, "utf-8")
 
 paul@329    171 
            finally:
 
 paul@329    172 
                f.close()
 
 paul@329    173 
        finally:
 
 paul@329    174 
            self.release_lock(user)
 
 paul@329    175 
 
 paul@329    176 
    def _set_object(self, user, filename, node):
 
 paul@329    177 
 
 paul@329    178 
        """
 
 paul@329    179 
        Set an object for the given 'user' having the given 'filename', using
 
 paul@329    180 
        'node' to define the object.
 
 paul@329    181 
        """
 
 paul@329    182 
 
 paul@329    183 
        self.acquire_lock(user)
 
 paul@329    184 
        try:
 
 paul@329    185 
            f = open(filename, "wb")
 
 paul@329    186 
            try:
 
 paul@329    187 
                to_stream(f, node)
 
 paul@329    188 
            finally:
 
 paul@329    189 
                f.close()
 
 paul@329    190 
                fix_permissions(filename)
 
 paul@329    191 
        finally:
 
 paul@329    192 
            self.release_lock(user)
 
 paul@329    193 
 
 paul@329    194 
        return True
 
 paul@329    195 
 
 paul@329    196 
    def _remove_object(self, filename):
 
 paul@329    197 
 
 paul@329    198 
        "Remove the object with the given 'filename'."
 
 paul@329    199 
 
 paul@329    200 
        try:
 
 paul@329    201 
            remove(filename)
 
 paul@329    202 
        except OSError:
 
 paul@329    203 
            return False
 
 paul@329    204 
 
 paul@329    205 
        return True
 
 paul@329    206 
 
 paul@343    207 
    def _remove_collection(self, filename):
 
 paul@343    208 
 
 paul@343    209 
        "Remove the collection with the given 'filename'."
 
 paul@343    210 
 
 paul@343    211 
        try:
 
 paul@343    212 
            rmdir(filename)
 
 paul@343    213 
        except OSError:
 
 paul@343    214 
            return False
 
 paul@343    215 
 
 paul@343    216 
        return True
 
 paul@343    217 
 
 paul@670    218 
    # User discovery.
 
 paul@670    219 
 
 paul@670    220 
    def get_users(self):
 
 paul@670    221 
 
 paul@670    222 
        "Return a list of users."
 
 paul@670    223 
 
 paul@670    224 
        return listdir(self.store_dir)
 
 paul@670    225 
 
 paul@648    226 
    # Event and event metadata access.
 
 paul@648    227 
 
 paul@119    228 
    def get_events(self, user):
 
 paul@119    229 
 
 paul@119    230 
        "Return a list of event identifiers."
 
 paul@119    231 
 
 paul@138    232 
        filename = self.get_object_in_store(user, "objects")
 
 paul@808    233 
        if not filename or not isdir(filename):
 
 paul@119    234 
            return None
 
 paul@119    235 
 
 paul@119    236 
        return [name for name in listdir(filename) if isfile(join(filename, name))]
 
 paul@119    237 
 
 paul@648    238 
    def get_all_events(self, user):
 
 paul@648    239 
 
 paul@648    240 
        "Return a set of (uid, recurrenceid) tuples for all events."
 
 paul@648    241 
 
 paul@648    242 
        uids = self.get_events(user)
 
 paul@674    243 
        if not uids:
 
 paul@674    244 
            return set()
 
 paul@648    245 
 
 paul@648    246 
        all_events = set()
 
 paul@648    247 
        for uid in uids:
 
 paul@648    248 
            all_events.add((uid, None))
 
 paul@648    249 
            all_events.update([(uid, recurrenceid) for recurrenceid in self.get_recurrences(user, uid)])
 
 paul@648    250 
 
 paul@648    251 
        return all_events
 
 paul@648    252 
 
 paul@760    253 
    def get_event_filename(self, user, uid, recurrenceid=None, dirname=None, username=None):
 
 paul@648    254 
 
 paul@694    255 
        """
 
 paul@694    256 
        Get the filename providing the event for the given 'user' with the given
 
 paul@694    257 
        'uid'. If the optional 'recurrenceid' is specified, a specific instance
 
 paul@694    258 
        or occurrence of an event is returned.
 
 paul@648    259 
 
 paul@694    260 
        Where 'dirname' is specified, the given directory name is used as the
 
 paul@694    261 
        base of the location within which any filename will reside.
 
 paul@694    262 
        """
 
 paul@648    263 
 
 paul@694    264 
        if recurrenceid:
 
 paul@760    265 
            return self.get_recurrence_filename(user, uid, recurrenceid, dirname, username)
 
 paul@694    266 
        else:
 
 paul@760    267 
            return self.get_complete_event_filename(user, uid, dirname, username)
 
 paul@648    268 
 
 paul@858    269 
    def get_event(self, user, uid, recurrenceid=None, dirname=None):
 
 paul@343    270 
 
 paul@343    271 
        """
 
 paul@343    272 
        Get the event for the given 'user' with the given 'uid'. If
 
 paul@343    273 
        the optional 'recurrenceid' is specified, a specific instance or
 
 paul@343    274 
        occurrence of an event is returned.
 
 paul@343    275 
        """
 
 paul@343    276 
 
 paul@858    277 
        filename = self.get_event_filename(user, uid, recurrenceid, dirname)
 
 paul@808    278 
        if not filename or not isfile(filename):
 
 paul@694    279 
            return None
 
 paul@694    280 
 
 paul@694    281 
        return filename and self._get_object(user, filename)
 
 paul@694    282 
 
 paul@760    283 
    def get_complete_event_filename(self, user, uid, dirname=None, username=None):
 
 paul@694    284 
 
 paul@694    285 
        """
 
 paul@694    286 
        Get the filename providing the event for the given 'user' with the given
 
 paul@694    287 
        'uid'. 
 
 paul@694    288 
 
 paul@694    289 
        Where 'dirname' is specified, the given directory name is used as the
 
 paul@694    290 
        base of the location within which any filename will reside.
 
 paul@760    291 
 
 paul@760    292 
        Where 'username' is specified, the event details will reside in a file
 
 paul@760    293 
        bearing that name within a directory having 'uid' as its name.
 
 paul@694    294 
        """
 
 paul@694    295 
 
 paul@760    296 
        return self.get_object_in_store(user, dirname, "objects", uid, username)
 
 paul@343    297 
 
 paul@343    298 
    def get_complete_event(self, user, uid):
 
 paul@50    299 
 
 paul@50    300 
        "Get the event for the given 'user' with the given 'uid'."
 
 paul@50    301 
 
 paul@694    302 
        filename = self.get_complete_event_filename(user, uid)
 
 paul@808    303 
        if not filename or not isfile(filename):
 
 paul@50    304 
            return None
 
 paul@50    305 
 
 paul@694    306 
        return filename and self._get_object(user, filename)
 
 paul@50    307 
 
 paul@343    308 
    def set_event(self, user, uid, recurrenceid, node):
 
 paul@343    309 
 
 paul@343    310 
        """
 
 paul@343    311 
        Set an event for 'user' having the given 'uid' and 'recurrenceid' (which
 
 paul@343    312 
        if the latter is specified, a specific instance or occurrence of an
 
 paul@343    313 
        event is referenced), using the given 'node' description.
 
 paul@343    314 
        """
 
 paul@343    315 
 
 paul@343    316 
        if recurrenceid:
 
 paul@343    317 
            return self.set_recurrence(user, uid, recurrenceid, node)
 
 paul@343    318 
        else:
 
 paul@343    319 
            return self.set_complete_event(user, uid, node)
 
 paul@343    320 
 
 paul@343    321 
    def set_complete_event(self, user, uid, node):
 
 paul@50    322 
 
 paul@50    323 
        "Set an event for 'user' having the given 'uid' and 'node'."
 
 paul@50    324 
 
 paul@138    325 
        filename = self.get_object_in_store(user, "objects", uid)
 
 paul@50    326 
        if not filename:
 
 paul@50    327 
            return False
 
 paul@50    328 
 
 paul@329    329 
        return self._set_object(user, filename, node)
 
 paul@15    330 
 
 paul@365    331 
    def remove_event(self, user, uid, recurrenceid=None):
 
 paul@234    332 
 
 paul@343    333 
        """
 
 paul@343    334 
        Remove an event for 'user' having the given 'uid'. If the optional
 
 paul@343    335 
        'recurrenceid' is specified, a specific instance or occurrence of an
 
 paul@343    336 
        event is removed.
 
 paul@343    337 
        """
 
 paul@343    338 
 
 paul@343    339 
        if recurrenceid:
 
 paul@343    340 
            return self.remove_recurrence(user, uid, recurrenceid)
 
 paul@343    341 
        else:
 
 paul@343    342 
            for recurrenceid in self.get_recurrences(user, uid) or []:
 
 paul@343    343 
                self.remove_recurrence(user, uid, recurrenceid)
 
 paul@343    344 
            return self.remove_complete_event(user, uid)
 
 paul@343    345 
 
 paul@343    346 
    def remove_complete_event(self, user, uid):
 
 paul@343    347 
 
 paul@234    348 
        "Remove an event for 'user' having the given 'uid'."
 
 paul@234    349 
 
 paul@378    350 
        self.remove_recurrences(user, uid)
 
 paul@369    351 
 
 paul@234    352 
        filename = self.get_object_in_store(user, "objects", uid)
 
 paul@234    353 
        if not filename:
 
 paul@234    354 
            return False
 
 paul@234    355 
 
 paul@329    356 
        return self._remove_object(filename)
 
 paul@234    357 
 
 paul@334    358 
    def get_recurrences(self, user, uid):
 
 paul@334    359 
 
 paul@334    360 
        """
 
 paul@334    361 
        Get additional event instances for an event of the given 'user' with the
 
 paul@694    362 
        indicated 'uid'. Both active and cancelled recurrences are returned.
 
 paul@694    363 
        """
 
 paul@694    364 
 
 paul@694    365 
        return self.get_active_recurrences(user, uid) + self.get_cancelled_recurrences(user, uid)
 
 paul@694    366 
 
 paul@694    367 
    def get_active_recurrences(self, user, uid):
 
 paul@694    368 
 
 paul@694    369 
        """
 
 paul@694    370 
        Get additional event instances for an event of the given 'user' with the
 
 paul@694    371 
        indicated 'uid'. Cancelled recurrences are not returned.
 
 paul@334    372 
        """
 
 paul@334    373 
 
 paul@334    374 
        filename = self.get_object_in_store(user, "recurrences", uid)
 
 paul@808    375 
        if not filename or not isdir(filename):
 
 paul@347    376 
            return []
 
 paul@334    377 
 
 paul@334    378 
        return [name for name in listdir(filename) if isfile(join(filename, name))]
 
 paul@334    379 
 
 paul@694    380 
    def get_cancelled_recurrences(self, user, uid):
 
 paul@694    381 
 
 paul@694    382 
        """
 
 paul@694    383 
        Get additional event instances for an event of the given 'user' with the
 
 paul@694    384 
        indicated 'uid'. Only cancelled recurrences are returned.
 
 paul@694    385 
        """
 
 paul@694    386 
 
 paul@782    387 
        filename = self.get_object_in_store(user, "cancellations", "recurrences", uid)
 
 paul@808    388 
        if not filename or not isdir(filename):
 
 paul@694    389 
            return []
 
 paul@694    390 
 
 paul@694    391 
        return [name for name in listdir(filename) if isfile(join(filename, name))]
 
 paul@694    392 
 
 paul@760    393 
    def get_recurrence_filename(self, user, uid, recurrenceid, dirname=None, username=None):
 
 paul@694    394 
 
 paul@694    395 
        """
 
 paul@694    396 
        For the event of the given 'user' with the given 'uid', return the
 
 paul@694    397 
        filename providing the recurrence with the given 'recurrenceid'.
 
 paul@694    398 
 
 paul@694    399 
        Where 'dirname' is specified, the given directory name is used as the
 
 paul@694    400 
        base of the location within which any filename will reside.
 
 paul@760    401 
 
 paul@760    402 
        Where 'username' is specified, the event details will reside in a file
 
 paul@760    403 
        bearing that name within a directory having 'uid' as its name.
 
 paul@694    404 
        """
 
 paul@694    405 
 
 paul@760    406 
        return self.get_object_in_store(user, dirname, "recurrences", uid, recurrenceid, username)
 
 paul@694    407 
 
 paul@334    408 
    def get_recurrence(self, user, uid, recurrenceid):
 
 paul@334    409 
 
 paul@334    410 
        """
 
 paul@334    411 
        For the event of the given 'user' with the given 'uid', return the
 
 paul@334    412 
        specific recurrence indicated by the 'recurrenceid'.
 
 paul@334    413 
        """
 
 paul@334    414 
 
 paul@694    415 
        filename = self.get_recurrence_filename(user, uid, recurrenceid)
 
 paul@808    416 
        if not filename or not isfile(filename):
 
 paul@334    417 
            return None
 
 paul@334    418 
 
 paul@694    419 
        return filename and self._get_object(user, filename)
 
 paul@334    420 
 
 paul@334    421 
    def set_recurrence(self, user, uid, recurrenceid, node):
 
 paul@334    422 
 
 paul@334    423 
        "Set an event for 'user' having the given 'uid' and 'node'."
 
 paul@334    424 
 
 paul@334    425 
        filename = self.get_object_in_store(user, "recurrences", uid, recurrenceid)
 
 paul@334    426 
        if not filename:
 
 paul@334    427 
            return False
 
 paul@334    428 
 
 paul@334    429 
        return self._set_object(user, filename, node)
 
 paul@334    430 
 
 paul@334    431 
    def remove_recurrence(self, user, uid, recurrenceid):
 
 paul@334    432 
 
 paul@378    433 
        """
 
 paul@378    434 
        Remove a special recurrence from an event stored by 'user' having the
 
 paul@378    435 
        given 'uid' and 'recurrenceid'.
 
 paul@378    436 
        """
 
 paul@334    437 
 
 paul@378    438 
        filename = self.get_object_in_store(user, "recurrences", uid, recurrenceid)
 
 paul@334    439 
        if not filename:
 
 paul@334    440 
            return False
 
 paul@334    441 
 
 paul@334    442 
        return self._remove_object(filename)
 
 paul@334    443 
 
 paul@378    444 
    def remove_recurrences(self, user, uid):
 
 paul@378    445 
 
 paul@378    446 
        """
 
 paul@378    447 
        Remove all recurrences for an event stored by 'user' having the given
 
 paul@378    448 
        'uid'.
 
 paul@378    449 
        """
 
 paul@378    450 
 
 paul@378    451 
        for recurrenceid in self.get_recurrences(user, uid):
 
 paul@378    452 
            self.remove_recurrence(user, uid, recurrenceid)
 
 paul@378    453 
 
 paul@378    454 
        recurrences = self.get_object_in_store(user, "recurrences", uid)
 
 paul@378    455 
        if recurrences:
 
 paul@378    456 
            return self._remove_collection(recurrences)
 
 paul@378    457 
 
 paul@378    458 
        return True
 
 paul@378    459 
 
 paul@652    460 
    # Free/busy period providers, upon extension of the free/busy records.
 
 paul@652    461 
 
 paul@672    462 
    def _get_freebusy_providers(self, user):
 
 paul@672    463 
 
 paul@672    464 
        """
 
 paul@672    465 
        Return the free/busy providers for the given 'user'.
 
 paul@672    466 
 
 paul@672    467 
        This function returns any stored datetime and a list of providers as a
 
 paul@672    468 
        2-tuple. Each provider is itself a (uid, recurrenceid) tuple.
 
 paul@672    469 
        """
 
 paul@672    470 
 
 paul@672    471 
        filename = self.get_object_in_store(user, "freebusy-providers")
 
 paul@808    472 
        if not filename or not isfile(filename):
 
 paul@672    473 
            return None
 
 paul@672    474 
 
 paul@672    475 
        # Attempt to read providers, with a declaration of the datetime
 
 paul@672    476 
        # from which such providers are considered as still being active.
 
 paul@672    477 
 
 paul@702    478 
        t = self._get_table_atomic(user, filename, [(1, None)])
 
 paul@672    479 
        try:
 
 paul@672    480 
            dt_string = t[0][0]
 
 paul@672    481 
        except IndexError:
 
 paul@672    482 
            return None
 
 paul@672    483 
 
 paul@672    484 
        return dt_string, t[1:]
 
 paul@672    485 
 
 paul@652    486 
    def get_freebusy_providers(self, user, dt=None):
 
 paul@652    487 
 
 paul@652    488 
        """
 
 paul@652    489 
        Return a set of uncancelled events of the form (uid, recurrenceid)
 
 paul@652    490 
        providing free/busy details beyond the given datetime 'dt'.
 
 paul@654    491 
 
 paul@654    492 
        If 'dt' is not specified, all events previously found to provide
 
 paul@654    493 
        details will be returned. Otherwise, if 'dt' is earlier than the
 
 paul@654    494 
        datetime recorded for the known providers, None is returned, indicating
 
 paul@654    495 
        that the list of providers must be recomputed.
 
 paul@672    496 
 
 paul@672    497 
        This function returns a list of (uid, recurrenceid) tuples upon success.
 
 paul@652    498 
        """
 
 paul@652    499 
 
 paul@672    500 
        t = self._get_freebusy_providers(user)
 
 paul@672    501 
        if not t:
 
 paul@672    502 
            return None
 
 paul@672    503 
 
 paul@672    504 
        dt_string, t = t
 
 paul@672    505 
 
 paul@672    506 
        # If the requested datetime is earlier than the stated datetime, the
 
 paul@672    507 
        # providers will need to be recomputed.
 
 paul@672    508 
 
 paul@672    509 
        if dt:
 
 paul@672    510 
            providers_dt = get_datetime(dt_string)
 
 paul@672    511 
            if not providers_dt or providers_dt > dt:
 
 paul@672    512 
                return None
 
 paul@672    513 
 
 paul@672    514 
        # Otherwise, return the providers.
 
 paul@672    515 
 
 paul@672    516 
        return t[1:]
 
 paul@672    517 
 
 paul@672    518 
    def _set_freebusy_providers(self, user, dt_string, t):
 
 paul@672    519 
 
 paul@672    520 
        "Set the given provider timestamp 'dt_string' and table 't'."
 
 paul@672    521 
 
 paul@652    522 
        filename = self.get_object_in_store(user, "freebusy-providers")
 
 paul@672    523 
        if not filename:
 
 paul@672    524 
            return False
 
 paul@652    525 
 
 paul@672    526 
        t.insert(0, (dt_string,))
 
 paul@702    527 
        self._set_table_atomic(user, filename, t, [(1, "")])
 
 paul@672    528 
        return True
 
 paul@652    529 
 
 paul@654    530 
    def set_freebusy_providers(self, user, dt, providers):
 
 paul@654    531 
 
 paul@654    532 
        """
 
 paul@654    533 
        Define the uncancelled events providing free/busy details beyond the
 
 paul@654    534 
        given datetime 'dt'.
 
 paul@654    535 
        """
 
 paul@654    536 
 
 paul@672    537 
        t = []
 
 paul@654    538 
 
 paul@654    539 
        for obj in providers:
 
 paul@672    540 
            t.append((obj.get_uid(), obj.get_recurrenceid()))
 
 paul@672    541 
 
 paul@672    542 
        return self._set_freebusy_providers(user, format_datetime(dt), t)
 
 paul@654    543 
 
 paul@672    544 
    def append_freebusy_provider(self, user, provider):
 
 paul@672    545 
 
 paul@672    546 
        "For the given 'user', append the free/busy 'provider'."
 
 paul@672    547 
 
 paul@672    548 
        t = self._get_freebusy_providers(user)
 
 paul@672    549 
        if not t:
 
 paul@654    550 
            return False
 
 paul@654    551 
 
 paul@672    552 
        dt_string, t = t
 
 paul@672    553 
        t.append((provider.get_uid(), provider.get_recurrenceid()))
 
 paul@672    554 
 
 paul@672    555 
        return self._set_freebusy_providers(user, dt_string, t)
 
 paul@672    556 
 
 paul@672    557 
    def remove_freebusy_provider(self, user, provider):
 
 paul@672    558 
 
 paul@672    559 
        "For the given 'user', remove the free/busy 'provider'."
 
 paul@672    560 
 
 paul@672    561 
        t = self._get_freebusy_providers(user)
 
 paul@672    562 
        if not t:
 
 paul@672    563 
            return False
 
 paul@672    564 
 
 paul@672    565 
        dt_string, t = t
 
 paul@672    566 
        try:
 
 paul@672    567 
            t.remove((provider.get_uid(), provider.get_recurrenceid()))
 
 paul@672    568 
        except ValueError:
 
 paul@672    569 
            return False
 
 paul@672    570 
 
 paul@672    571 
        return self._set_freebusy_providers(user, dt_string, t)
 
 paul@654    572 
 
 paul@648    573 
    # Free/busy period access.
 
 paul@648    574 
 
 paul@702    575 
    def get_freebusy(self, user, name=None, get_table=None):
 
 paul@15    576 
 
 paul@15    577 
        "Get free/busy details for the given 'user'."
 
 paul@15    578 
 
 paul@702    579 
        filename = self.get_object_in_store(user, name or "freebusy")
 
 paul@808    580 
        if not filename or not isfile(filename):
 
 paul@167    581 
            return []
 
 paul@112    582 
        else:
 
 paul@702    583 
            return map(lambda t: FreeBusyPeriod(*t),
 
 paul@702    584 
                (get_table or self._get_table_atomic)(user, filename, [(4, None)]))
 
 paul@702    585 
 
 paul@702    586 
    def get_freebusy_for_other(self, user, other, get_table=None):
 
 paul@112    587 
 
 paul@112    588 
        "For the given 'user', get free/busy details for the 'other' user."
 
 paul@112    589 
 
 paul@112    590 
        filename = self.get_object_in_store(user, "freebusy-other", other)
 
 paul@808    591 
        if not filename or not isfile(filename):
 
 paul@167    592 
            return []
 
 paul@112    593 
        else:
 
 paul@702    594 
            return map(lambda t: FreeBusyPeriod(*t),
 
 paul@702    595 
                (get_table or self._get_table_atomic)(user, filename, [(4, None)]))
 
 paul@702    596 
 
 paul@702    597 
    def set_freebusy(self, user, freebusy, name=None, set_table=None):
 
 paul@15    598 
 
 paul@15    599 
        "For the given 'user', set 'freebusy' details."
 
 paul@15    600 
 
 paul@702    601 
        filename = self.get_object_in_store(user, name or "freebusy")
 
 paul@15    602 
        if not filename:
 
 paul@15    603 
            return False
 
 paul@15    604 
 
 paul@702    605 
        (set_table or self._set_table_atomic)(user, filename,
 
 paul@702    606 
            map(lambda fb: fb.as_tuple(strings_only=True), freebusy))
 
 paul@15    607 
        return True
 
 paul@15    608 
 
 paul@702    609 
    def set_freebusy_for_other(self, user, freebusy, other, set_table=None):
 
 paul@110    610 
 
 paul@110    611 
        "For the given 'user', set 'freebusy' details for the 'other' user."
 
 paul@110    612 
 
 paul@110    613 
        filename = self.get_object_in_store(user, "freebusy-other", other)
 
 paul@110    614 
        if not filename:
 
 paul@110    615 
            return False
 
 paul@110    616 
 
 paul@702    617 
        (set_table or self._set_table_atomic)(user, filename,
 
 paul@702    618 
            map(lambda fb: fb.as_tuple(strings_only=True), freebusy))
 
 paul@112    619 
        return True
 
 paul@112    620 
 
 paul@710    621 
    # Tentative free/busy periods related to countering.
 
 paul@710    622 
 
 paul@710    623 
    def get_freebusy_offers(self, user):
 
 paul@710    624 
 
 paul@710    625 
        "Get free/busy offers for the given 'user'."
 
 paul@710    626 
 
 paul@710    627 
        offers = []
 
 paul@710    628 
        expired = []
 
 paul@741    629 
        now = to_timezone(datetime.utcnow(), "UTC")
 
 paul@710    630 
 
 paul@710    631 
        # Expire old offers and save the collection if modified.
 
 paul@710    632 
 
 paul@730    633 
        self.acquire_lock(user)
 
 paul@710    634 
        try:
 
 paul@730    635 
            l = self.get_freebusy(user, "freebusy-offers")
 
 paul@710    636 
            for fb in l:
 
 paul@710    637 
                if fb.expires and get_datetime(fb.expires) <= now:
 
 paul@710    638 
                    expired.append(fb)
 
 paul@710    639 
                else:
 
 paul@710    640 
                    offers.append(fb)
 
 paul@710    641 
 
 paul@710    642 
            if expired:
 
 paul@730    643 
                self.set_freebusy_offers(user, offers)
 
 paul@710    644 
        finally:
 
 paul@730    645 
            self.release_lock(user)
 
 paul@710    646 
 
 paul@710    647 
        return offers
 
 paul@710    648 
 
 paul@710    649 
    def set_freebusy_offers(self, user, freebusy):
 
 paul@710    650 
 
 paul@710    651 
        "For the given 'user', set 'freebusy' offers."
 
 paul@710    652 
 
 paul@710    653 
        return self.set_freebusy(user, freebusy, "freebusy-offers")
 
 paul@710    654 
 
 paul@747    655 
    # Requests and counter-proposals.
 
 paul@648    656 
 
 paul@142    657 
    def _get_requests(self, user, queue):
 
 paul@66    658 
 
 paul@142    659 
        "Get requests for the given 'user' from the given 'queue'."
 
 paul@66    660 
 
 paul@142    661 
        filename = self.get_object_in_store(user, queue)
 
 paul@808    662 
        if not filename or not isfile(filename):
 
 paul@66    663 
            return None
 
 paul@66    664 
 
 paul@747    665 
        return self._get_table_atomic(user, filename, [(1, None), (2, None)])
 
 paul@66    666 
 
 paul@142    667 
    def get_requests(self, user):
 
 paul@142    668 
 
 paul@142    669 
        "Get requests for the given 'user'."
 
 paul@142    670 
 
 paul@142    671 
        return self._get_requests(user, "requests")
 
 paul@142    672 
 
 paul@142    673 
    def _set_requests(self, user, requests, queue):
 
 paul@66    674 
 
 paul@142    675 
        """
 
 paul@142    676 
        For the given 'user', set the list of queued 'requests' in the given
 
 paul@142    677 
        'queue'.
 
 paul@142    678 
        """
 
 paul@142    679 
 
 paul@142    680 
        filename = self.get_object_in_store(user, queue)
 
 paul@66    681 
        if not filename:
 
 paul@66    682 
            return False
 
 paul@66    683 
 
 paul@747    684 
        self._set_table_atomic(user, filename, requests, [(1, ""), (2, "")])
 
 paul@66    685 
        return True
 
 paul@66    686 
 
 paul@142    687 
    def set_requests(self, user, requests):
 
 paul@142    688 
 
 paul@142    689 
        "For the given 'user', set the list of queued 'requests'."
 
 paul@142    690 
 
 paul@142    691 
        return self._set_requests(user, requests, "requests")
 
 paul@142    692 
 
 paul@747    693 
    def _set_request(self, user, request, queue):
 
 paul@142    694 
 
 paul@343    695 
        """
 
 paul@747    696 
        For the given 'user', set the given 'request' in the given 'queue'.
 
 paul@343    697 
        """
 
 paul@142    698 
 
 paul@142    699 
        filename = self.get_object_in_store(user, queue)
 
 paul@55    700 
        if not filename:
 
 paul@55    701 
            return False
 
 paul@55    702 
 
 paul@303    703 
        self.acquire_lock(user)
 
 paul@55    704 
        try:
 
 paul@747    705 
            f = codecs.open(filename, "ab", encoding="utf-8")
 
 paul@303    706 
            try:
 
 paul@747    707 
                self._set_table_item(f, request, [(1, ""), (2, "")])
 
 paul@303    708 
            finally:
 
 paul@303    709 
                f.close()
 
 paul@303    710 
                fix_permissions(filename)
 
 paul@55    711 
        finally:
 
 paul@303    712 
            self.release_lock(user)
 
 paul@55    713 
 
 paul@55    714 
        return True
 
 paul@55    715 
 
 paul@747    716 
    def set_request(self, user, uid, recurrenceid=None, type=None):
 
 paul@142    717 
 
 paul@747    718 
        """
 
 paul@747    719 
        For the given 'user', set the queued 'uid' and 'recurrenceid',
 
 paul@747    720 
        indicating a request, along with any given 'type'.
 
 paul@747    721 
        """
 
 paul@142    722 
 
 paul@747    723 
        return self._set_request(user, (uid, recurrenceid, type), "requests")
 
 paul@747    724 
 
 paul@747    725 
    def queue_request(self, user, uid, recurrenceid=None, type=None):
 
 paul@142    726 
 
 paul@343    727 
        """
 
 paul@343    728 
        Queue a request for 'user' having the given 'uid'. If the optional
 
 paul@747    729 
        'recurrenceid' is specified, the entry refers to a specific instance
 
 paul@747    730 
        or occurrence of an event. The 'type' parameter can be used to indicate
 
 paul@747    731 
        a specific type of request.
 
 paul@747    732 
        """
 
 paul@747    733 
 
 paul@747    734 
        requests = self.get_requests(user) or []
 
 paul@747    735 
 
 paul@747    736 
        if not self.have_request(requests, uid, recurrenceid):
 
 paul@747    737 
            return self.set_request(user, uid, recurrenceid, type)
 
 paul@747    738 
 
 paul@747    739 
        return False
 
 paul@747    740 
 
 paul@840    741 
    def dequeue_request(self, user, uid, recurrenceid=None):
 
 paul@747    742 
 
 paul@747    743 
        """
 
 paul@747    744 
        Dequeue all requests for 'user' having the given 'uid'. If the optional
 
 paul@747    745 
        'recurrenceid' is specified, all requests for that specific instance or
 
 paul@747    746 
        occurrence of an event are dequeued.
 
 paul@343    747 
        """
 
 paul@66    748 
 
 paul@81    749 
        requests = self.get_requests(user) or []
 
 paul@750    750 
        result = []
 
 paul@747    751 
 
 paul@750    752 
        for request in requests:
 
 paul@808    753 
            if request[:2] != (uid, recurrenceid):
 
 paul@750    754 
                result.append(request)
 
 paul@747    755 
 
 paul@750    756 
        self.set_requests(user, result)
 
 paul@747    757 
        return True
 
 paul@747    758 
 
 paul@817    759 
    def has_request(self, user, uid, recurrenceid=None, type=None, strict=False):
 
 paul@817    760 
        return self.have_request(self.get_requests(user) or [], uid, recurrenceid, type, strict)
 
 paul@817    761 
 
 paul@754    762 
    def have_request(self, requests, uid, recurrenceid=None, type=None, strict=False):
 
 paul@754    763 
 
 paul@754    764 
        """
 
 paul@754    765 
        Return whether 'requests' contains a request with the given 'uid' and
 
 paul@754    766 
        any specified 'recurrenceid' and 'type'. If 'strict' is set to a true
 
 paul@754    767 
        value, the precise type of the request must match; otherwise, any type
 
 paul@754    768 
        of request for the identified object may be matched.
 
 paul@754    769 
        """
 
 paul@754    770 
 
 paul@750    771 
        for request in requests:
 
 paul@762    772 
            if request[:2] == (uid, recurrenceid) and (
 
 paul@762    773 
                not strict or
 
 paul@762    774 
                not request[2:] and not type or
 
 paul@762    775 
                request[2:] and request[2] == type):
 
 paul@762    776 
 
 paul@750    777 
                return True
 
 paul@762    778 
 
 paul@750    779 
        return False
 
 paul@747    780 
 
 paul@760    781 
    def get_counters(self, user, uid, recurrenceid=None):
 
 paul@754    782 
 
 paul@754    783 
        """
 
 paul@766    784 
        For the given 'user', return a list of users from whom counter-proposals
 
 paul@766    785 
        have been received for the given 'uid' and optional 'recurrenceid'.
 
 paul@754    786 
        """
 
 paul@754    787 
 
 paul@754    788 
        filename = self.get_event_filename(user, uid, recurrenceid, "counters")
 
 paul@808    789 
        if not filename or not isdir(filename):
 
 paul@754    790 
            return False
 
 paul@754    791 
 
 paul@766    792 
        return [name for name in listdir(filename) if isfile(join(filename, name))]
 
 paul@760    793 
 
 paul@760    794 
    def get_counter(self, user, other, uid, recurrenceid=None):
 
 paul@105    795 
 
 paul@343    796 
        """
 
 paul@760    797 
        For the given 'user', return the counter-proposal from 'other' for the
 
 paul@760    798 
        given 'uid' and optional 'recurrenceid'.
 
 paul@760    799 
        """
 
 paul@760    800 
 
 paul@760    801 
        filename = self.get_event_filename(user, uid, recurrenceid, "counters", other)
 
 paul@760    802 
        if not filename:
 
 paul@760    803 
            return False
 
 paul@760    804 
 
 paul@760    805 
        return self._get_object(user, filename)
 
 paul@760    806 
 
 paul@760    807 
    def set_counter(self, user, other, node, uid, recurrenceid=None):
 
 paul@760    808 
 
 paul@760    809 
        """
 
 paul@760    810 
        For the given 'user', store a counter-proposal received from 'other' the
 
 paul@760    811 
        given 'node' representing that proposal for the given 'uid' and
 
 paul@760    812 
        'recurrenceid'.
 
 paul@760    813 
        """
 
 paul@760    814 
 
 paul@760    815 
        filename = self.get_event_filename(user, uid, recurrenceid, "counters", other)
 
 paul@760    816 
        if not filename:
 
 paul@760    817 
            return False
 
 paul@760    818 
 
 paul@760    819 
        return self._set_object(user, filename, node)
 
 paul@760    820 
 
 paul@760    821 
    def remove_counters(self, user, uid, recurrenceid=None):
 
 paul@760    822 
 
 paul@760    823 
        """
 
 paul@760    824 
        For the given 'user', remove all counter-proposals associated with the
 
 paul@760    825 
        given 'uid' and 'recurrenceid'.
 
 paul@343    826 
        """
 
 paul@105    827 
 
 paul@747    828 
        filename = self.get_event_filename(user, uid, recurrenceid, "counters")
 
 paul@808    829 
        if not filename or not isdir(filename):
 
 paul@747    830 
            return False
 
 paul@747    831 
 
 paul@760    832 
        removed = False
 
 paul@747    833 
 
 paul@760    834 
        for other in listdir(filename):
 
 paul@760    835 
            counter_filename = self.get_event_filename(user, uid, recurrenceid, "counters", other)
 
 paul@760    836 
            removed = removed or self._remove_object(counter_filename)
 
 paul@760    837 
 
 paul@760    838 
        return removed
 
 paul@760    839 
 
 paul@760    840 
    def remove_counter(self, user, other, uid, recurrenceid=None):
 
 paul@105    841 
 
 paul@747    842 
        """
 
 paul@760    843 
        For the given 'user', remove any counter-proposal from 'other'
 
 paul@760    844 
        associated with the given 'uid' and 'recurrenceid'.
 
 paul@747    845 
        """
 
 paul@747    846 
 
 paul@760    847 
        filename = self.get_event_filename(user, uid, recurrenceid, "counters", other)
 
 paul@808    848 
        if not filename or not isfile(filename):
 
 paul@105    849 
            return False
 
 paul@747    850 
 
 paul@747    851 
        return self._remove_object(filename)
 
 paul@747    852 
 
 paul@747    853 
    # Event cancellation.
 
 paul@105    854 
 
 paul@343    855 
    def cancel_event(self, user, uid, recurrenceid=None):
 
 paul@142    856 
 
 paul@343    857 
        """
 
 paul@694    858 
        Cancel an event for 'user' having the given 'uid'. If the optional
 
 paul@694    859 
        'recurrenceid' is specified, a specific instance or occurrence of an
 
 paul@694    860 
        event is cancelled.
 
 paul@343    861 
        """
 
 paul@142    862 
 
 paul@694    863 
        filename = self.get_event_filename(user, uid, recurrenceid)
 
 paul@694    864 
        cancelled_filename = self.get_event_filename(user, uid, recurrenceid, "cancellations")
 
 paul@142    865 
 
 paul@808    866 
        if filename and cancelled_filename and isfile(filename):
 
 paul@694    867 
            return self.move_object(filename, cancelled_filename)
 
 paul@142    868 
 
 paul@142    869 
        return False
 
 paul@142    870 
 
 paul@863    871 
    def uncancel_event(self, user, uid, recurrenceid=None):
 
 paul@863    872 
 
 paul@863    873 
        """
 
 paul@863    874 
        Uncancel an event for 'user' having the given 'uid'. If the optional
 
 paul@863    875 
        'recurrenceid' is specified, a specific instance or occurrence of an
 
 paul@863    876 
        event is uncancelled.
 
 paul@863    877 
        """
 
 paul@863    878 
 
 paul@863    879 
        filename = self.get_event_filename(user, uid, recurrenceid)
 
 paul@863    880 
        cancelled_filename = self.get_event_filename(user, uid, recurrenceid, "cancellations")
 
 paul@863    881 
 
 paul@863    882 
        if filename and cancelled_filename and isfile(cancelled_filename):
 
 paul@863    883 
            return self.move_object(cancelled_filename, filename)
 
 paul@863    884 
 
 paul@863    885 
        return False
 
 paul@863    886 
 
 paul@796    887 
    def remove_cancellations(self, user, uid, recurrenceid=None):
 
 paul@796    888 
 
 paul@796    889 
        """
 
 paul@796    890 
        Remove cancellations for 'user' for any event having the given 'uid'. If
 
 paul@796    891 
        the optional 'recurrenceid' is specified, a specific instance or
 
 paul@796    892 
        occurrence of an event is affected.
 
 paul@796    893 
        """
 
 paul@796    894 
 
 paul@796    895 
        # Remove all recurrence cancellations if a general event is indicated.
 
 paul@796    896 
 
 paul@796    897 
        if not recurrenceid:
 
 paul@796    898 
            for _recurrenceid in self.get_cancelled_recurrences(user, uid):
 
 paul@796    899 
                self.remove_cancellation(user, uid, _recurrenceid)
 
 paul@796    900 
 
 paul@796    901 
        return self.remove_cancellation(user, uid, recurrenceid)
 
 paul@796    902 
 
 paul@796    903 
    def remove_cancellation(self, user, uid, recurrenceid=None):
 
 paul@796    904 
 
 paul@796    905 
        """
 
 paul@796    906 
        Remove a cancellation for 'user' for the event having the given 'uid'.
 
 paul@796    907 
        If the optional 'recurrenceid' is specified, a specific instance or
 
 paul@796    908 
        occurrence of an event is affected.
 
 paul@796    909 
        """
 
 paul@796    910 
 
 paul@796    911 
        # Remove any parent event cancellation or a specific recurrence
 
 paul@796    912 
        # cancellation if indicated.
 
 paul@796    913 
 
 paul@796    914 
        filename = self.get_event_filename(user, uid, recurrenceid, "cancellations")
 
 paul@796    915 
 
 paul@808    916 
        if filename and isfile(filename):
 
 paul@796    917 
            return self._remove_object(filename)
 
 paul@796    918 
 
 paul@796    919 
        return False
 
 paul@796    920 
 
 paul@30    921 
class FilePublisher(FileBase):
 
 paul@30    922 
 
 paul@30    923 
    "A publisher of objects."
 
 paul@30    924 
 
 paul@597    925 
    def __init__(self, store_dir=None):
 
 paul@597    926 
        FileBase.__init__(self, store_dir or PUBLISH_DIR)
 
 paul@30    927 
 
 paul@30    928 
    def set_freebusy(self, user, freebusy):
 
 paul@30    929 
 
 paul@30    930 
        "For the given 'user', set 'freebusy' details."
 
 paul@30    931 
 
 paul@52    932 
        filename = self.get_object_in_store(user, "freebusy")
 
 paul@30    933 
        if not filename:
 
 paul@30    934 
            return False
 
 paul@30    935 
 
 paul@30    936 
        record = []
 
 paul@30    937 
        rwrite = record.append
 
 paul@30    938 
 
 paul@30    939 
        rwrite(("ORGANIZER", {}, user))
 
 paul@30    940 
        rwrite(("UID", {}, user))
 
 paul@30    941 
        rwrite(("DTSTAMP", {}, datetime.utcnow().strftime("%Y%m%dT%H%M%SZ")))
 
 paul@30    942 
 
 paul@458    943 
        for fb in freebusy:
 
 paul@458    944 
            if not fb.transp or fb.transp == "OPAQUE":
 
 paul@529    945 
                rwrite(("FREEBUSY", {"FBTYPE" : "BUSY"}, "/".join(
 
 paul@563    946 
                    map(format_datetime, [fb.get_start_point(), fb.get_end_point()]))))
 
 paul@30    947 
 
 paul@395    948 
        f = open(filename, "wb")
 
 paul@30    949 
        try:
 
 paul@30    950 
            to_stream(f, make_calendar([("VFREEBUSY", {}, record)], "PUBLISH"))
 
 paul@30    951 
        finally:
 
 paul@30    952 
            f.close()
 
 paul@103    953 
            fix_permissions(filename)
 
 paul@30    954 
 
 paul@30    955 
        return True
 
 paul@30    956 
 
 paul@1039    957 
class FileJournal(FileStoreBase):
 
 paul@1039    958 
 
 paul@1039    959 
    "A journal system to support quotas."
 
 paul@1039    960 
 
 paul@1039    961 
    def __init__(self, store_dir=None):
 
 paul@1039    962 
        FileBase.__init__(self, store_dir or JOURNAL_DIR)
 
 paul@1039    963 
 
 paul@1049    964 
    # Quota and user identity/group discovery.
 
 paul@1049    965 
 
 paul@1049    966 
    def get_quotas(self):
 
 paul@1049    967 
 
 paul@1049    968 
        "Return a list of quotas."
 
 paul@1049    969 
 
 paul@1049    970 
        return listdir(self.store_dir)
 
 paul@1049    971 
 
 paul@1049    972 
    def get_quota_users(self, quota):
 
 paul@1049    973 
 
 paul@1049    974 
        "Return a list of quota users."
 
 paul@1049    975 
 
 paul@1049    976 
        filename = self.get_object_in_store(quota, "journal")
 
 paul@1049    977 
        if not filename or not isdir(filename):
 
 paul@1049    978 
            return []
 
 paul@1049    979 
 
 paul@1049    980 
        return listdir(filename)
 
 paul@1049    981 
 
 paul@1039    982 
    # Groups of users sharing quotas.
 
 paul@1039    983 
 
 paul@1039    984 
    def get_groups(self, quota):
 
 paul@1039    985 
 
 paul@1039    986 
        "Return the identity mappings for the given 'quota' as a dictionary."
 
 paul@1039    987 
 
 paul@1039    988 
        filename = self.get_object_in_store(quota, "groups")
 
 paul@1039    989 
        if not filename or not isfile(filename):
 
 paul@1039    990 
            return {}
 
 paul@1039    991 
 
 paul@1046    992 
        return dict(self._get_table_atomic(quota, filename, tab_separated=False))
 
 paul@1039    993 
 
 paul@1039    994 
    def get_limits(self, quota):
 
 paul@1039    995 
 
 paul@1039    996 
        """
 
 paul@1039    997 
        Return the limits for the 'quota' as a dictionary mapping identities or
 
 paul@1039    998 
        groups to durations.
 
 paul@1039    999 
        """
 
 paul@1039   1000 
 
 paul@1039   1001 
        filename = self.get_object_in_store(quota, "limits")
 
 paul@1039   1002 
        if not filename or not isfile(filename):
 
 paul@1039   1003 
            return None
 
 paul@1039   1004 
 
 paul@1046   1005 
        return dict(self._get_table_atomic(quota, filename, tab_separated=False))
 
 paul@1039   1006 
 
 paul@1048   1007 
    # Free/busy period access for users within quota groups.
 
 paul@1039   1008 
 
 paul@1039   1009 
    def get_freebusy(self, quota, user, get_table=None):
 
 paul@1039   1010 
 
 paul@1039   1011 
        "Get free/busy details for the given 'quota' and 'user'."
 
 paul@1039   1012 
 
 paul@1039   1013 
        filename = self.get_object_in_store(quota, "freebusy", user)
 
 paul@1039   1014 
        if not filename or not isfile(filename):
 
 paul@1039   1015 
            return []
 
 paul@1039   1016 
        else:
 
 paul@1039   1017 
            return map(lambda t: FreeBusyPeriod(*t),
 
 paul@1039   1018 
                (get_table or self._get_table_atomic)(quota, filename, [(4, None)]))
 
 paul@1039   1019 
 
 paul@1039   1020 
    def set_freebusy(self, quota, user, freebusy, set_table=None):
 
 paul@1039   1021 
 
 paul@1039   1022 
        "For the given 'quota' and 'user', set 'freebusy' details."
 
 paul@1039   1023 
 
 paul@1039   1024 
        filename = self.get_object_in_store(quota, "freebusy", user)
 
 paul@1039   1025 
        if not filename:
 
 paul@1039   1026 
            return False
 
 paul@1039   1027 
 
 paul@1039   1028 
        (set_table or self._set_table_atomic)(quota, filename,
 
 paul@1039   1029 
            map(lambda fb: fb.as_tuple(strings_only=True), freebusy))
 
 paul@1039   1030 
        return True
 
 paul@1039   1031 
 
 paul@1039   1032 
    # Journal entry methods.
 
 paul@1039   1033 
 
 paul@1039   1034 
    def get_entries(self, quota, group):
 
 paul@1039   1035 
 
 paul@1039   1036 
        """
 
 paul@1039   1037 
        Return a list of journal entries for the given 'quota' for the indicated
 
 paul@1039   1038 
        'group'.
 
 paul@1039   1039 
        """
 
 paul@1039   1040 
 
 paul@1039   1041 
        filename = self.get_object_in_store(quota, "journal", group)
 
 paul@1039   1042 
        if not filename or not isfile(filename):
 
 paul@1039   1043 
            return []
 
 paul@1039   1044 
 
 paul@1048   1045 
        return self._get_table_atomic(quota, filename, [(1, None), (3, None)])
 
 paul@1039   1046 
 
 paul@1039   1047 
    def set_entries(self, quota, group, entries):
 
 paul@1039   1048 
 
 paul@1039   1049 
        """
 
 paul@1039   1050 
        For the given 'quota' and indicated 'group', set the list of journal
 
 paul@1039   1051 
        'entries'.
 
 paul@1039   1052 
        """
 
 paul@1039   1053 
 
 paul@1039   1054 
        filename = self.get_object_in_store(quota, "journal", group)
 
 paul@1039   1055 
        if not filename:
 
 paul@1039   1056 
            return False
 
 paul@1039   1057 
 
 paul@1048   1058 
        self._set_table_atomic(quota, filename, entries, [(1, ""), (3, "")])
 
 paul@1039   1059 
        return True
 
 paul@1039   1060 
 
 paul@2   1061 
# vim: tabstop=4 expandtab shiftwidth=4