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authorKali Kaneko <kali@leap.se>2014-01-17 02:51:31 -0400
committerKali Kaneko <kali@leap.se>2014-01-17 12:02:40 -0400
commit9ef1cd79397d811575826025b924c615e6ce2aa4 (patch)
treebfbb330f27069b0e4003e2f68a4f71c786b71d70 /src/leap/mail/imap/messages.py
parent8ebd48d923466db51b9ea5698f51d1f12867a7cb (diff)
Add a fetch_headers for mass-header fetch queries
Diffstat (limited to 'src/leap/mail/imap/messages.py')
-rw-r--r--src/leap/mail/imap/messages.py159
1 files changed, 154 insertions, 5 deletions
diff --git a/src/leap/mail/imap/messages.py b/src/leap/mail/imap/messages.py
index f968c47..7a21009 100644
--- a/src/leap/mail/imap/messages.py
+++ b/src/leap/mail/imap/messages.py
@@ -964,10 +964,30 @@ class MessageCollection(WithMsgFields, IndexedDB, MailParser, MBoxParser,
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
@@ -1007,14 +1027,25 @@ class MessageCollection(WithMsgFields, IndexedDB, MailParser, MBoxParser,
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: [],
}
+
+
}
_rdoc_lock = threading.Lock()
+ _hdocset_lock = threading.Lock()
def __init__(self, mbox=None, soledad=None):
"""
@@ -1045,10 +1076,12 @@ class MessageCollection(WithMsgFields, IndexedDB, MailParser, MBoxParser,
self.mbox = self._parse_mailbox_name(mbox)
self._soledad = soledad
self.__rflags = None
+ self.__hdocset = None
self.initialize_db()
- # ensure that we have a recent-flags doc
+ # ensure that we have a recent-flags and a hdocs-sec doc
self._get_or_create_rdoc()
+ self._get_or_create_hdocset()
def _get_empty_doc(self, _type=FLAGS_DOC):
"""
@@ -1073,6 +1106,18 @@ class MessageCollection(WithMsgFields, IndexedDB, MailParser, MBoxParser,
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
@@ -1222,10 +1267,12 @@ class MessageCollection(WithMsgFields, IndexedDB, MailParser, MBoxParser,
# first, regular docs: flags and headers
self._soledad.create_doc(fd)
-
# XXX should check for content duplication on headers too
# but with chash. !!!
- self._soledad.create_doc(hd)
+ hdoc = self._soledad.create_doc(hd)
+ # We add the newly created hdoc to the fast-access set of
+ # headers documents associated with the mailbox.
+ self.add_hdocset_docid(hdoc.doc_id)
# and last, but not least, try to create
# content docs if not already there.
@@ -1258,7 +1305,11 @@ class MessageCollection(WithMsgFields, IndexedDB, MailParser, MBoxParser,
d.addCallback(self._remove_cb)
return d
+ #
# getters: specific queries
+ #
+
+ # recent flags
def _get_recent_flags(self):
"""
@@ -1310,14 +1361,85 @@ class MessageCollection(WithMsgFields, IndexedDB, MailParser, MBoxParser,
def _get_recent_doc(self):
"""
- Get recent-flags document for this inbox.
+ Get recent-flags document for this mailbox.
"""
curried = partial(
self._soledad.get_from_index,
fields.TYPE_MBOX_IDX,
fields.TYPE_RECENT_VAL, self.mbox)
curried.expected = "rdoc"
- return try_unique_query(curried)
+ with self._rdoc_lock:
+ return try_unique_query(curried)
+
+ # headers-docs-set
+
+ def _get_hdocset(self):
+ """
+ An accessor for the hdocs-set for this mailbox.
+ """
+ if not self.__hdocset:
+ hdocset_doc = self._get_hdocset_doc()
+ value = set(hdocset_doc.content.get(
+ fields.HDOCS_SET_KEY, []))
+ self.__hdocset = value
+ return self.__hdocset
+
+ def _set_hdocset(self, value):
+ """
+ Setter for the hdocs-set for this mailbox.
+ """
+ hdocset_doc = self._get_hdocset_doc()
+ newv = set(value)
+ self.__hdocset = newv
+
+ with self._hdocset_lock:
+ hdocset_doc.content[fields.HDOCS_SET_KEY] = list(newv)
+ # XXX should deferLater 0 it?
+ self._soledad.put_doc(hdocset_doc)
+
+ _hdocset = property(
+ _get_hdocset, _set_hdocset,
+ doc="Set of Document-IDs for the headers docs associated "
+ "with this mailbox.")
+
+ def _get_hdocset_doc(self):
+ """
+ Get hdocs-set document for this mailbox.
+ """
+ curried = partial(
+ self._soledad.get_from_index,
+ fields.TYPE_MBOX_IDX,
+ fields.TYPE_HDOCS_SET_VAL, self.mbox)
+ curried.expected = "hdocset"
+ with self._hdocset_lock:
+ hdocset_doc = try_unique_query(curried)
+ return hdocset_doc
+
+ def remove_hdocset_docids(self, docids):
+ """
+ Remove the given document IDs from the set of
+ header-documents associated with this mailbox.
+ """
+ self._hdocset = self._hdocset.difference(
+ set(docids))
+
+ def remove_hdocset_docid(self, docid):
+ """
+ Remove the given document ID from the set of
+ header-documents associated with this mailbox.
+ """
+ self._hdocset = self._hdocset.difference(
+ set([docid]))
+
+ def add_hdocset_docid(self, docid):
+ """
+ Add the given document ID to the set of
+ header-documents associated with this mailbox.
+ """
+ hdocset = self._hdocset
+ self._hdocset = hdocset.union(set([docid]))
+
+ # individual doc getters, message layer.
def _get_fdoc_from_chash(self, chash):
"""
@@ -1456,6 +1578,30 @@ class MessageCollection(WithMsgFields, IndexedDB, MailParser, MBoxParser,
fields.TYPE_FLAGS_VAL, self.mbox)))
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.
@@ -1509,6 +1655,9 @@ class MessageCollection(WithMsgFields, IndexedDB, MailParser, MBoxParser,
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