# -*- coding: utf-8 -*- # messages.py # Copyright (C) 2013 LEAP # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . """ LeapMessage and MessageCollection. """ import copy import logging import re import threading import StringIO from collections import defaultdict from functools import partial from twisted.mail import imap4 from twisted.internet import defer from twisted.python import log from zope.interface import implements from zope.proxy import sameProxiedObjects from leap.common.check import leap_assert, leap_assert_type from leap.common.decorators import memoized_method from leap.common.mail import get_email_charset from leap.mail import walk from leap.mail.utils import first, find_charset, lowerdict, empty from leap.mail.decorators import deferred from leap.mail.imap.index import IndexedDB from leap.mail.imap.fields import fields, WithMsgFields from leap.mail.imap.memorystore import MessageWrapper from leap.mail.imap.messageparts import MessagePart from leap.mail.imap.parser import MailParser, MBoxParser logger = logging.getLogger(__name__) # TODO ------------------------------------------------------------ # [ ] Add ref to incoming message during add_msg # [ ] Add linked-from info. # * Need a new type of documents: linkage info. # * HDOCS are linked from FDOCs (ref to chash) # * CDOCS are linked from HDOCS (ref to chash) # [ ] Delete incoming mail only after successful write! # [ ] Remove UID from syncable db. Store only those indexes locally. MSGID_PATTERN = r"""<([\w@.]+)>""" MSGID_RE = re.compile(MSGID_PATTERN) def try_unique_query(curried): """ Try to execute a query that is expected to have a single outcome, and log a warning if more than one document found. :param curried: a curried function :type curried: callable """ leap_assert(callable(curried), "A callable is expected") try: query = curried() if query: if len(query) > 1: # TODO we could take action, like trigger a background # process to kill dupes. name = getattr(curried, 'expected', 'doc') logger.warning( "More than one %s found for this mbox, " "we got a duplicate!!" % (name,)) return query.pop() else: return None except Exception as exc: logger.exception("Unhandled error %r" % exc) class LeapMessage(fields, MailParser, MBoxParser): """ The main representation of a message. It indexes the messages in one mailbox by a combination of uid+mailbox name. """ # TODO this has to change. # Should index primarily by chash, and keep a local-only # UID table. implements(imap4.IMessage) flags_lock = threading.Lock() def __init__(self, soledad, uid, mbox, collection=None, container=None): """ Initializes a LeapMessage. :param soledad: a Soledad instance :type soledad: Soledad :param uid: the UID for the message. :type uid: int or basestring :param mbox: the mbox this message belongs to :type mbox: str or unicode :param collection: a reference to the parent collection object :type collection: MessageCollection :param container: a IMessageContainer implementor instance :type container: IMessageContainer """ MailParser.__init__(self) self._soledad = soledad self._uid = int(uid) self._mbox = self._parse_mailbox_name(mbox) self._collection = collection self._container = container self.__chash = None self.__bdoc = None # XXX make these properties public @property def _fdoc(self): """ An accessor to the flags document. """ if all(map(bool, (self._uid, self._mbox))): fdoc = None if self._container is not None: fdoc = self._container.fdoc if not fdoc: fdoc = self._get_flags_doc() if fdoc: fdoc_content = fdoc.content self.__chash = fdoc_content.get( fields.CONTENT_HASH_KEY, None) return fdoc @property def _hdoc(self): """ An accessor to the headers document. """ if self._container is not None: hdoc = self._container.hdoc if hdoc and not empty(hdoc.content): return hdoc # XXX cache this into the memory store !!! return self._get_headers_doc() @property def _chash(self): """ An accessor to the content hash for this message. """ if not self._fdoc: return None if not self.__chash and self._fdoc: self.__chash = self._fdoc.content.get( fields.CONTENT_HASH_KEY, None) return self.__chash @property def _bdoc(self): """ An accessor to the body document. """ if not self._hdoc: return None if not self.__bdoc: self.__bdoc = self._get_body_doc() return self.__bdoc # IMessage implementation def getUID(self): """ Retrieve the unique identifier associated with this Message. :return: uid for this message :rtype: int """ return self._uid def getFlags(self): """ Retrieve the flags associated with this Message. :return: The flags, represented as strings :rtype: tuple """ uid = self._uid flags = set([]) fdoc = self._fdoc if fdoc: flags = set(fdoc.content.get(self.FLAGS_KEY, None)) msgcol = self._collection # We treat the recent flag specially: gotten from # a mailbox-level document. if msgcol and uid in msgcol.recent_flags: flags.add(fields.RECENT_FLAG) if flags: flags = map(str, flags) return tuple(flags) # setFlags not in the interface spec but we use it with store command. #@profile def setFlags(self, flags, mode): """ Sets the flags for this message :param flags: the flags to update in the message. :type flags: tuple of str :param mode: the mode for setting. 1 is append, -1 is remove, 0 set. :type mode: int """ leap_assert(isinstance(flags, tuple), "flags need to be a tuple") log.msg('setting flags: %s (%s)' % (self._uid, flags)) doc = self._fdoc if not doc: logger.warning( "Could not find FDOC for %s:%s while setting flags!" % (self._mbox, self._uid)) return APPEND = 1 REMOVE = -1 SET = 0 with self.flags_lock: current = doc.content[self.FLAGS_KEY] if mode == APPEND: newflags = tuple(set(tuple(current) + flags)) elif mode == REMOVE: newflags = tuple(set(current).difference(set(flags))) elif mode == SET: newflags = flags # We could defer this, but I think it's better # to put it under the lock... doc.content[self.FLAGS_KEY] = newflags doc.content[self.SEEN_KEY] = self.SEEN_FLAG in flags doc.content[self.DEL_KEY] = self.DELETED_FLAG in flags if self._collection.memstore is not None: log.msg("putting message in collection") self._collection.memstore.put_message( self._mbox, self._uid, MessageWrapper(fdoc=doc.content, new=False, dirty=True, docs_id={'fdoc': doc.doc_id})) else: # fallback for non-memstore initializations. self._soledad.put_doc(doc) return map(str, newflags) def getInternalDate(self): """ Retrieve the date internally associated with this message :rtype: C{str} :return: An RFC822-formatted date string. """ date = self._hdoc.content.get(self.DATE_KEY, '') return str(date) # # IMessagePart # # XXX we should implement this interface too for the subparts # so we allow nested parts... def getBodyFile(self): """ Retrieve a file object containing only the body of this message. :return: file-like object opened for reading :rtype: StringIO """ def write_fd(body): fd.write(body) fd.seek(0) return fd # TODO refactor with getBodyFile in MessagePart fd = StringIO.StringIO() if self._bdoc is not None: bdoc_content = self._bdoc.content if empty(bdoc_content): logger.warning("No BDOC content found for message!!!") return write_fd("") body = bdoc_content.get(self.RAW_KEY, "") content_type = bdoc_content.get('content-type', "") charset = find_charset(content_type) logger.debug('got charset from content-type: %s' % charset) if charset is None: charset = self._get_charset(body) try: if isinstance(body, unicode): body = body.encode(charset) except UnicodeError as exc: logger.error( "Unicode error, using 'replace'. {0!r}".format(exc)) logger.debug("Attempted to encode with: %s" % charset) body = body.encode(charset, 'replace') finally: return write_fd(body) # We are still returning funky characters from here. else: logger.warning("No BDOC found for message.") return write_fd(str("")) @memoized_method def _get_charset(self, stuff): """ Gets (guesses?) the charset of a payload. :param stuff: the stuff to guess about. :type stuff: basestring :returns: charset """ # TODO get from subpart headers # XXX existential doubt 2. shouldn't we make the scope # of the decorator somewhat more persistent? # ah! yes! and put memory bounds. return get_email_charset(unicode(stuff)) def getSize(self): """ Return the total size, in octets, of this message. :return: size of the message, in octets :rtype: int """ size = None if self._fdoc: fdoc_content = self._fdoc.content size = fdoc_content.get(self.SIZE_KEY, False) else: logger.warning("No FLAGS doc for %s:%s" % (self._mbox, self._uid)) if not size: # XXX fallback, should remove when all migrated. size = self.getBodyFile().len return size def getHeaders(self, negate, *names): """ Retrieve a group of message headers. :param names: The names of the headers to retrieve or omit. :type names: tuple of str :param negate: If True, indicates that the headers listed in names should be omitted from the return value, rather than included. :type negate: bool :return: A mapping of header field names to header field values :rtype: dict """ # TODO split in smaller methods # XXX refactor together with MessagePart method headers = self._get_headers() if not headers: logger.warning("No headers found") return {str('content-type'): str('')} names = map(lambda s: s.upper(), names) if negate: cond = lambda key: key.upper() not in names else: cond = lambda key: key.upper() in names if isinstance(headers, list): headers = dict(headers) # default to most likely standard charset = find_charset(headers, "utf-8") headers2 = dict() for key, value in headers.items(): # twisted imap server expects *some* headers to be lowercase # We could use a CaseInsensitiveDict here... if key.lower() == "content-type": key = key.lower() if not isinstance(key, str): key = key.encode(charset, 'replace') if not isinstance(value, str): value = value.encode(charset, 'replace') if value.endswith(";"): # bastards value = value[:-1] # filter original dict by negate-condition if cond(key): headers2[key] = value return headers2 def _get_headers(self): """ Return the headers dict for this message. """ if self._hdoc is not None: hdoc_content = self._hdoc.content headers = hdoc_content.get(self.HEADERS_KEY, {}) return headers else: logger.warning( "No HEADERS doc for msg %s:%s" % ( self._mbox, self._uid)) def isMultipart(self): """ Return True if this message is multipart. """ if self._fdoc: fdoc_content = self._fdoc.content is_multipart = fdoc_content.get(self.MULTIPART_KEY, False) return is_multipart else: logger.warning( "No FLAGS doc for msg %s:%s" % ( self._mbox, self._uid)) def getSubPart(self, part): """ Retrieve a MIME submessage :type part: C{int} :param part: The number of the part to retrieve, indexed from 0. :raise IndexError: Raised if the specified part does not exist. :raise TypeError: Raised if this message is not multipart. :rtype: Any object implementing C{IMessagePart}. :return: The specified sub-part. """ if not self.isMultipart(): raise TypeError try: pmap_dict = self._get_part_from_parts_map(part + 1) except KeyError: raise IndexError return MessagePart(self._soledad, pmap_dict) # # accessors # def _get_part_from_parts_map(self, part): """ Get a part map from the headers doc :raises: KeyError if key does not exist :rtype: dict """ if not self._hdoc: logger.warning("Tried to get part but no HDOC found!") return None hdoc_content = self._hdoc.content pmap = hdoc_content.get(fields.PARTS_MAP_KEY, {}) return pmap[str(part)] # XXX moved to memory store # move the rest too. ------------------------------------------ def _get_flags_doc(self): """ Return the document that keeps the flags for this message. """ result = {} try: flag_docs = self._soledad.get_from_index( fields.TYPE_MBOX_UID_IDX, fields.TYPE_FLAGS_VAL, self._mbox, str(self._uid)) result = first(flag_docs) except Exception as exc: # ugh! Something's broken down there! logger.warning("ERROR while getting flags for UID: %s" % self._uid) logger.exception(exc) finally: return result def _get_headers_doc(self): """ Return the document that keeps the headers for this message. """ head_docs = self._soledad.get_from_index( fields.TYPE_C_HASH_IDX, fields.TYPE_HEADERS_VAL, str(self._chash)) return first(head_docs) def _get_body_doc(self): """ Return the document that keeps the body for this message. """ hdoc_content = self._hdoc.content body_phash = hdoc_content.get( fields.BODY_KEY, None) if not body_phash: logger.warning("No body phash for this document!") return None # XXX get from memstore too... # if memstore: memstore.get_phrash # memstore should keep a dict with weakrefs to the # phash doc... if self._container is not None: bdoc = self._container.memstore.get_cdoc_from_phash(body_phash) if bdoc and bdoc.content is not None: return bdoc # no memstore or no doc found there if self._soledad: body_docs = self._soledad.get_from_index( fields.TYPE_P_HASH_IDX, fields.TYPE_CONTENT_VAL, str(body_phash)) return first(body_docs) else: logger.error("No phash in container, and no soledad found!") def __getitem__(self, key): """ Return an item from the content of the flags document, for convenience. :param key: The key :type key: str :return: The content value indexed by C{key} or None :rtype: str """ return self._fdoc.content.get(key, None) def does_exist(self): """ Return True if there is actually a flags document for this UID and mbox. """ return not empty(self._fdoc) class MessageCollection(WithMsgFields, IndexedDB, MailParser, MBoxParser): """ A collection of messages, surprisingly. It is tied to a selected mailbox name that is passed to its constructor. Implements a filter query over the messages contained in a soledad database. """ # XXX this should be able to produce a MessageSet methinks # could validate these kinds of objects turning them # into a template for the class. FLAGS_DOC = "FLAGS" HEADERS_DOC = "HEADERS" CONTENT_DOC = "CONTENT" """ RECENT_DOC is a document that stores a list of the UIDs with the recent flag for this mailbox. It deserves a special treatment because: (1) it cannot be set by the user (2) it's a flag that we set inmediately after a fetch, which is quite often. (3) we need to be able to set/unset it in batches without doing a single write for each element in the sequence. """ RECENT_DOC = "RECENT" """ HDOCS_SET_DOC is a document that stores a set of the Document-IDs (the u1db index) for all the headers documents for a given mailbox. We use it to prefetch massively all the headers for a mailbox. This is the second massive query, after fetching all the FLAGS, that a MUA will do in a case where we do not have local disk cache. """ HDOCS_SET_DOC = "HDOCS_SET" templates = { # Message Level FLAGS_DOC: { fields.TYPE_KEY: fields.TYPE_FLAGS_VAL, fields.UID_KEY: 1, # XXX moe to a local table fields.MBOX_KEY: fields.INBOX_VAL, fields.CONTENT_HASH_KEY: "", fields.SEEN_KEY: False, fields.DEL_KEY: False, fields.FLAGS_KEY: [], fields.MULTIPART_KEY: False, fields.SIZE_KEY: 0 }, HEADERS_DOC: { fields.TYPE_KEY: fields.TYPE_HEADERS_VAL, fields.CONTENT_HASH_KEY: "", fields.DATE_KEY: "", fields.SUBJECT_KEY: "", fields.HEADERS_KEY: {}, fields.PARTS_MAP_KEY: {}, }, CONTENT_DOC: { fields.TYPE_KEY: fields.TYPE_CONTENT_VAL, fields.PAYLOAD_HASH_KEY: "", fields.LINKED_FROM_KEY: [], fields.CTYPE_KEY: "", # should index by this too # should only get inmutable headers parts # (for indexing) fields.HEADERS_KEY: {}, fields.RAW_KEY: "", fields.PARTS_MAP_KEY: {}, fields.HEADERS_KEY: {}, fields.MULTIPART_KEY: False, }, # Mailbox Level RECENT_DOC: { fields.TYPE_KEY: fields.TYPE_RECENT_VAL, fields.MBOX_KEY: fields.INBOX_VAL, fields.RECENTFLAGS_KEY: [], }, HDOCS_SET_DOC: { fields.TYPE_KEY: fields.TYPE_HDOCS_SET_VAL, fields.MBOX_KEY: fields.INBOX_VAL, fields.HDOCS_SET_KEY: [], } } # Different locks for wrapping both the u1db document getting/setting # and the property getting/settting in an atomic operation. # TODO we would abstract this to a SoledadProperty class _rdoc_lock = threading.Lock() _rdoc_property_lock = threading.Lock() _hdocset_lock = threading.Lock() _hdocset_property_lock = threading.Lock() def __init__(self, mbox=None, soledad=None, memstore=None): """ Constructor for MessageCollection. On initialization, we ensure that we have a document for storing the recent flags. The nature of this flag make us wanting to store the set of the UIDs with this flag at the level of the MessageCollection for each mailbox, instead of treating them as a property of each message. We are passed an instance of MemoryStore, the same for the SoledadBackedAccount, that we use as a read cache and a buffer for writes. :param mbox: the name of the mailbox. It is the name with which we filter the query over the messages database. :type mbox: str :param soledad: Soledad database :type soledad: Soledad instance :param memstore: a MemoryStore instance :type memstore: MemoryStore """ MailParser.__init__(self) leap_assert(mbox, "Need a mailbox name to initialize") leap_assert(mbox.strip() != "", "mbox cannot be blank space") leap_assert(isinstance(mbox, (str, unicode)), "mbox needs to be a string") leap_assert(soledad, "Need a soledad instance to initialize") # okay, all in order, keep going... self.mbox = self._parse_mailbox_name(mbox) # XXX get a SoledadStore passed instead self._soledad = soledad self.memstore = memstore self.__rflags = None self.__hdocset = None self.initialize_db() # ensure that we have a recent-flags and a hdocs-sec doc self._get_or_create_rdoc() # Not for now... #self._get_or_create_hdocset() def _get_empty_doc(self, _type=FLAGS_DOC): """ Returns an empty doc for storing different message parts. Defaults to returning a template for a flags document. :return: a dict with the template :rtype: dict """ if not _type in self.templates.keys(): raise TypeError("Improper type passed to _get_empty_doc") return copy.deepcopy(self.templates[_type]) def _get_or_create_rdoc(self): """ Try to retrieve the recent-flags doc for this MessageCollection, and create one if not found. """ rdoc = self._get_recent_doc() if not rdoc: rdoc = self._get_empty_doc(self.RECENT_DOC) if self.mbox != fields.INBOX_VAL: rdoc[fields.MBOX_KEY] = self.mbox self._soledad.create_doc(rdoc) def _get_or_create_hdocset(self): """ Try to retrieve the hdocs-set doc for this MessageCollection, and create one if not found. """ hdocset = self._get_hdocset_doc() if not hdocset: hdocset = self._get_empty_doc(self.HDOCS_SET_DOC) if self.mbox != fields.INBOX_VAL: hdocset[fields.MBOX_KEY] = self.mbox self._soledad.create_doc(hdocset) def _do_parse(self, raw): """ Parse raw message and return it along with relevant information about its outer level. :param raw: the raw message :type raw: StringIO or basestring :return: msg, chash, size, multi :rtype: tuple """ msg = self._get_parsed_msg(raw) chash = self._get_hash(msg) size = len(msg.as_string()) multi = msg.is_multipart() return msg, chash, size, multi def _populate_flags(self, flags, uid, chash, size, multi): """ Return a flags doc. XXX Missing DOC ----------- """ fd = self._get_empty_doc(self.FLAGS_DOC) fd[self.MBOX_KEY] = self.mbox fd[self.UID_KEY] = uid fd[self.CONTENT_HASH_KEY] = chash fd[self.SIZE_KEY] = size fd[self.MULTIPART_KEY] = multi if flags: fd[self.FLAGS_KEY] = map(self._stringify, flags) fd[self.SEEN_KEY] = self.SEEN_FLAG in flags fd[self.DEL_KEY] = self.DELETED_FLAG in flags fd[self.RECENT_KEY] = True # set always by default return fd def _populate_headr(self, msg, chash, subject, date): """ Return a headers doc. XXX Missing DOC ----------- """ headers = defaultdict(list) for k, v in msg.items(): headers[k].append(v) # "fix" for repeated headers. for k, v in headers.items(): newline = "\n%s: " % (k,) headers[k] = newline.join(v) lower_headers = lowerdict(headers) msgid = first(MSGID_RE.findall( lower_headers.get('message-id', ''))) hd = self._get_empty_doc(self.HEADERS_DOC) hd[self.CONTENT_HASH_KEY] = chash hd[self.HEADERS_KEY] = headers hd[self.MSGID_KEY] = msgid if not subject and self.SUBJECT_FIELD in headers: hd[self.SUBJECT_KEY] = headers[self.SUBJECT_FIELD] else: hd[self.SUBJECT_KEY] = subject if not date and self.DATE_FIELD in headers: hd[self.DATE_KEY] = headers[self.DATE_FIELD] else: hd[self.DATE_KEY] = date return hd def _fdoc_already_exists(self, chash): """ Check whether we can find a flags doc for this mailbox with the given content-hash. It enforces that we can only have the same maessage listed once for a a given mailbox. :param chash: the content-hash to check about. :type chash: basestring :return: False, if it does not exist, or UID. """ exist = False if self.memstore is not None: exist = self.memstore.get_fdoc_from_chash(chash, self.mbox) if not exist: exist = self._get_fdoc_from_chash(chash) if exist: return exist.content.get(fields.UID_KEY, "unknown-uid") else: return False # not deferring to thread cause this now uses deferred asa retval #@deferred #@profile def add_msg(self, raw, subject=None, flags=None, date=None, uid=None, notify_on_disk=False): """ Creates a new message document. Here lives the magic of the leap mail. Well, in soledad, really. :param raw: the raw message :type raw: str :param subject: subject of the message. :type subject: str :param flags: flags :type flags: list :param date: the received date for the message :type date: str :param uid: the message uid for this mailbox :type uid: int """ # TODO signal that we can delete the original message!----- # when all the processing is done. # TODO add the linked-from info ! # TODO add reference to the original message logger.debug('adding message') if flags is None: flags = tuple() leap_assert_type(flags, tuple) # parse msg, chash, size, multi = self._do_parse(raw) # check for uniqueness -------------------------------- # XXX profiler says that this test is costly. # So we probably should just do an in-memory check and # move the complete check to the soledad writer? # Watch out! We're reserving a UID right after this! if self._fdoc_already_exists(chash): logger.warning("We already have that message in this mailbox.") return defer.succeed('already_exists') uid = self.memstore.increment_last_soledad_uid(self.mbox) logger.info("ADDING MSG WITH UID: %s" % uid) fd = self._populate_flags(flags, uid, chash, size, multi) hd = self._populate_headr(msg, chash, subject, date) parts = walk.get_parts(msg) body_phash_fun = [walk.get_body_phash_simple, walk.get_body_phash_multi][int(multi)] body_phash = body_phash_fun(walk.get_payloads(msg)) parts_map = walk.walk_msg_tree(parts, body_phash=body_phash) # add parts map to header doc # (body, multi, part_map) for key in parts_map: hd[key] = parts_map[key] del parts_map # The MessageContainer expects a dict, one-indexed # XXX review-me cdocs = dict(((key + 1, doc) for key, doc in enumerate(walk.get_raw_docs(msg, parts)))) self.set_recent_flag(uid) # Saving ---------------------------------------- # TODO ---- add reference to original doc, to be deleted # after writes are done. msg_container = MessageWrapper(fd, hd, cdocs) # we return a deferred that by default will be triggered # inmediately. d = self.memstore.create_message(self.mbox, uid, msg_container, notify_on_disk=notify_on_disk) return d # # getters: specific queries # # recent flags #@profile def _get_recent_flags(self): """ An accessor for the recent-flags set for this mailbox. """ # XXX check if we should remove this if self.__rflags is not None: return self.__rflags if self.memstore is not None: with self._rdoc_lock: rflags = self.memstore.get_recent_flags(self.mbox) if not rflags: # not loaded in the memory store yet. # let's fetch them from soledad... rdoc = self._get_recent_doc() rflags = set(rdoc.content.get( fields.RECENTFLAGS_KEY, [])) # ...and cache them now. self.memstore.load_recent_flags( self.mbox, {'doc_id': rdoc.doc_id, 'set': rflags}) return rflags #else: # fallback for cases without memory store #with self._rdoc_lock: #rdoc = self._get_recent_doc() #self.__rflags = set(rdoc.content.get( #fields.RECENTFLAGS_KEY, [])) #return self.__rflags def _set_recent_flags(self, value): """ Setter for the recent-flags set for this mailbox. """ if self.memstore is not None: self.memstore.set_recent_flags(self.mbox, value) #else: # fallback for cases without memory store #with self._rdoc_lock: #rdoc = self._get_recent_doc() #newv = set(value) #self.__rflags = newv #rdoc.content[fields.RECENTFLAGS_KEY] = list(newv) # XXX should deferLater 0 it? #self._soledad.put_doc(rdoc) recent_flags = property( _get_recent_flags, _set_recent_flags, doc="Set of UIDs with the recent flag for this mailbox.") # XXX change naming, indicate soledad query. #@profile def _get_recent_doc(self): """ Get recent-flags document from Soledad for this mailbox. :rtype: SoledadDocument or None """ curried = partial( self._soledad.get_from_index, fields.TYPE_MBOX_IDX, fields.TYPE_RECENT_VAL, self.mbox) curried.expected = "rdoc" rdoc = try_unique_query(curried) return rdoc # Property-set modification (protected by a different # lock to give atomicity to the read/write operation) def unset_recent_flags(self, uids): """ Unset Recent flag for a sequence of uids. :param uids: the uids to unset :type uid: sequence """ with self._rdoc_property_lock: self.recent_flags.difference_update( set(uids)) # Individual flags operations def unset_recent_flag(self, uid): """ Unset Recent flag for a given uid. :param uid: the uid to unset :type uid: int """ with self._rdoc_property_lock: self.recent_flags.difference_update( set([uid])) @deferred def set_recent_flag(self, uid): """ Set Recent flag for a given uid. :param uid: the uid to set :type uid: int """ with self._rdoc_property_lock: self.recent_flags = self.recent_flags.union( set([uid])) # individual doc getters, message layer. def _get_fdoc_from_chash(self, chash): """ Return a flags document for this mailbox with a given chash. :return: A SoledadDocument containing the Flags Document, or None if the query failed. :rtype: SoledadDocument or None. """ curried = partial( self._soledad.get_from_index, fields.TYPE_MBOX_C_HASH_IDX, fields.TYPE_FLAGS_VAL, self.mbox, chash) curried.expected = "fdoc" return try_unique_query(curried) def _get_uid_from_msgidCb(self, msgid): hdoc = None curried = partial( self._soledad.get_from_index, fields.TYPE_MSGID_IDX, fields.TYPE_HEADERS_VAL, msgid) curried.expected = "hdoc" hdoc = try_unique_query(curried) if hdoc is None: logger.warning("Could not find hdoc for msgid %s" % (msgid,)) return None msg_chash = hdoc.content.get(fields.CONTENT_HASH_KEY) fdoc = self._get_fdoc_from_chash(msg_chash) if not fdoc: logger.warning("Could not find fdoc for msgid %s" % (msgid,)) return None return fdoc.content.get(fields.UID_KEY, None) @deferred def _get_uid_from_msgid(self, msgid): """ Return a UID for a given message-id. It first gets the headers-doc for that msg-id, and it found it queries the flags doc for the current mailbox for the matching content-hash. :return: A UID, or None """ # We need to wait a little bit, cause in some of the cases # the query is received right after we've saved the document, # and we cannot find it otherwise. This seems to be enough. # XXX do a deferLater instead ?? # XXX is this working? return self._get_uid_from_msgidCb(msgid) #@profile def set_flags(self, mbox, messages, flags, mode): """ Set flags for a sequence of messages. :param mbox: the mbox this message belongs to :type mbox: str or unicode :param messages: the messages to iterate through :type messages: sequence :flags: the flags to be set :type flags: tuple :param mode: the mode for setting. 1 is append, -1 is remove, 0 set. :type mode: int """ result = {} for msg_id in messages: log.msg("MSG ID = %s" % msg_id) msg = self.get_msg_by_uid(msg_id, mem_only=True, flags_only=True) if not msg: continue result[msg_id] = msg.setFlags(flags, mode) return result # getters: generic for a mailbox def get_msg_by_uid(self, uid, mem_only=False, flags_only=False): """ Retrieves a LeapMessage by UID. This is used primarity in the Mailbox fetch and store methods. :param uid: the message uid to query by :type uid: int :param mem_only: a flag that indicates whether this Message should pass a reference to soledad to retrieve missing pieces or not. :type mem_only: bool :param flags_only: whether the message should carry only a reference to the flags document. :type flags_only: bool :return: A LeapMessage instance matching the query, or None if not found. :rtype: LeapMessage """ msg_container = self.memstore.get_message(self.mbox, uid, flags_only) if msg_container is not None: if mem_only: msg = LeapMessage(None, uid, self.mbox, collection=self, container=msg_container) else: # We pass a reference to soledad just to be able to retrieve # missing parts that cannot be found in the container, like # the content docs after a copy. msg = LeapMessage(self._soledad, uid, self.mbox, collection=self, container=msg_container) else: msg = LeapMessage(self._soledad, uid, self.mbox, collection=self) if not msg.does_exist(): return None return msg def get_all_docs(self, _type=fields.TYPE_FLAGS_VAL): """ Get all documents for the selected mailbox of the passed type. By default, it returns the flag docs. If you want acess to the content, use __iter__ instead :return: a list of u1db documents :rtype: list of SoledadDocument """ if _type not in fields.__dict__.values(): raise TypeError("Wrong type passed to get_all_docs") if sameProxiedObjects(self._soledad, None): logger.warning('Tried to get messages but soledad is None!') return [] all_docs = [doc for doc in self._soledad.get_from_index( fields.TYPE_MBOX_IDX, _type, self.mbox)] # inneficient, but first let's grok it and then # let's worry about efficiency. # XXX FIXINDEX -- should implement order by in soledad # FIXME ---------------------------------------------- return sorted(all_docs, key=lambda item: item.content['uid']) #@profile def all_soledad_uid_iter(self): """ Return an iterator through the UIDs of all messages, sorted in ascending order. """ db_uids = set([doc.content[self.UID_KEY] for doc in self._soledad.get_from_index( fields.TYPE_MBOX_IDX, fields.TYPE_FLAGS_VAL, self.mbox)]) return db_uids #@profile def all_uid_iter(self): """ Return an iterator through the UIDs of all messages, from memory. """ if self.memstore is not None: mem_uids = self.memstore.get_uids(self.mbox) soledad_known_uids = self.memstore.get_soledad_known_uids( self.mbox) combined = tuple(set(mem_uids).union(soledad_known_uids)) return combined # XXX MOVE to memstore def all_flags(self): """ Return a dict with all flags documents for this mailbox. """ # XXX get all from memstore and cache it there # FIXME should get all uids, get them fro memstore, # and get only the missing ones from disk. all_flags = dict((( doc.content[self.UID_KEY], doc.content[self.FLAGS_KEY]) for doc in self._soledad.get_from_index( fields.TYPE_MBOX_IDX, fields.TYPE_FLAGS_VAL, self.mbox))) if self.memstore is not None: uids = self.memstore.get_uids(self.mbox) docs = ((uid, self.memstore.get_message(self.mbox, uid)) for uid in uids) for uid, doc in docs: all_flags[uid] = doc.fdoc.content[self.FLAGS_KEY] return all_flags def all_flags_chash(self): """ Return a dict with the content-hash for all flag documents for this mailbox. """ all_flags_chash = dict((( doc.content[self.UID_KEY], doc.content[self.CONTENT_HASH_KEY]) for doc in self._soledad.get_from_index( fields.TYPE_MBOX_IDX, fields.TYPE_FLAGS_VAL, self.mbox))) return all_flags_chash def all_headers(self): """ Return a dict with all the headers documents for this mailbox. """ all_headers = dict((( doc.content[self.CONTENT_HASH_KEY], doc.content[self.HEADERS_KEY]) for doc in self._soledad.get_docs(self._hdocset))) return all_headers def count(self): """ Return the count of messages for this mailbox. :rtype: int """ # XXX We should cache this in memstore too until next write... count = self._soledad.get_count_from_index( fields.TYPE_MBOX_IDX, fields.TYPE_FLAGS_VAL, self.mbox) if self.memstore is not None: count += self.memstore.count_new() return count # unseen messages def unseen_iter(self): """ Get an iterator for the message UIDs with no `seen` flag for this mailbox. :return: iterator through unseen message doc UIDs :rtype: iterable """ return (doc.content[self.UID_KEY] for doc in self._soledad.get_from_index( fields.TYPE_MBOX_SEEN_IDX, fields.TYPE_FLAGS_VAL, self.mbox, '0')) def count_unseen(self): """ Count all messages with the `Unseen` flag. :returns: count :rtype: int """ count = self._soledad.get_count_from_index( fields.TYPE_MBOX_SEEN_IDX, fields.TYPE_FLAGS_VAL, self.mbox, '0') return count def get_unseen(self): """ Get all messages with the `Unseen` flag :returns: a list of LeapMessages :rtype: list """ return [LeapMessage(self._soledad, docid, self.mbox) for docid in self.unseen_iter()] # recent messages # XXX take it from memstore def count_recent(self): """ Count all messages with the `Recent` flag. It just retrieves the length of the recent_flags set, which is stored in a specific type of document for this collection. :returns: count :rtype: int """ return len(self.recent_flags) def __len__(self): """ Returns the number of messages on this mailbox. :rtype: int """ return self.count() def __iter__(self): """ Returns an iterator over all messages. :returns: iterator of dicts with content for all messages. :rtype: iterable """ return (LeapMessage(self._soledad, docuid, self.mbox) for docuid in self.all_uid_iter()) def __repr__(self): """ Representation string for this object. """ return u"" % ( self.mbox, self.count()) # XXX should implement __eq__ also !!! # use chash...