/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
/*
* This file currently contains a fairly general implementation of asynchronous
* indexing with a very explicit message indexing implementation. As gloda
* will eventually want to index more than just messages, the message-specific
* things should ideally lose their special hold on this file. This will
* benefit readability/size as well.
*/
this.EXPORTED_SYMBOLS = ['GlodaMsgIndexer'];
var Cc = Components.classes;
var Ci = Components.interfaces;
var Cr = Components.results;
var Cu = Components.utils;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource:///modules/iteratorUtils.jsm");
Cu.import("resource:///modules/mailServices.js");
Cu.import("resource:///modules/MailUtils.js");
Cu.import("resource:///modules/gloda/log4moz.js");
Cu.import("resource:///modules/gloda/utils.js");
Cu.import("resource:///modules/gloda/datastore.js");
Cu.import("resource:///modules/gloda/datamodel.js");
Cu.import("resource:///modules/gloda/gloda.js");
Cu.import("resource:///modules/gloda/collection.js");
Cu.import("resource:///modules/gloda/connotent.js");
Cu.import("resource:///modules/gloda/indexer.js");
Cu.import("resource:///modules/gloda/mimemsg.js");
XPCOMUtils.defineLazyServiceGetter(this, "atomService",
"@mozilla.org/atom-service;1",
"nsIAtomService");
// Components.results does not have mailnews error codes!
var NS_MSG_ERROR_FOLDER_SUMMARY_OUT_OF_DATE = 0x80550005;
var GLODA_MESSAGE_ID_PROPERTY = "gloda-id";
/**
* Message header property to track dirty status; one of
* |GlodaIndexer.kMessageClean|, |GlodaIndexer.kMessageDirty|,
* |GlodaIndexer.kMessageFilthy|.
*/
var GLODA_DIRTY_PROPERTY = "gloda-dirty";
/**
* The sentinel GLODA_MESSAGE_ID_PROPERTY value indicating that a message fails
* to index and we should not bother trying again, at least not until a new
* release is made.
*
* This should ideally just flip between 1 and 2, with GLODA_OLD_BAD_MESSAGE_ID
* flipping in the other direction. If we start having more trailing badness,
* _indexerGetEnumerator and GLODA_OLD_BAD_MESSAGE_ID will need to be altered.
*
* When flipping this, be sure to update glodaTestHelper.js's copy.
*/
var GLODA_BAD_MESSAGE_ID = 2;
/**
* The gloda id we used to use to mark messages as bad, but now should be
* treated as eligible for indexing. This is only ever used for consideration
* when creating msg header enumerators with `_indexerGetEnumerator` which
* means we only will re-index such messages in an indexing sweep. Accordingly
* event-driven indexing will still treat such messages as unindexed (and
* unindexable) until an indexing sweep picks them up.
*/
var GLODA_OLD_BAD_MESSAGE_ID = 1;
var GLODA_FIRST_VALID_MESSAGE_ID = 32;
var JUNK_SCORE_PROPERTY = "junkscore";
var JUNK_SPAM_SCORE_STR = Ci.nsIJunkMailPlugin.IS_SPAM_SCORE.toString();
var JUNK_HAM_SCORE_STR = Ci.nsIJunkMailPlugin.IS_HAM_SCORE.toString();
var nsIArray = Ci.nsIArray;
var nsIMsgFolder = Ci.nsIMsgFolder;
var nsIMsgLocalMailFolder = Ci.nsIMsgLocalMailFolder;
var nsIMsgImapMailFolder = Ci.nsIMsgImapMailFolder;
var nsIMsgDBHdr = Ci.nsIMsgDBHdr;
var nsMsgFolderFlags = Ci.nsMsgFolderFlags;
var nsMsgMessageFlags = Ci.nsMsgMessageFlags;
var nsMsgProcessingFlags = Ci.nsMsgProcessingFlags;
/**
* The processing flags that tell us that a message header has not yet been
* reported to us via msgsClassified. If it has one of these flags, it is
* still being processed.
*/
var NOT_YET_REPORTED_PROCESSING_FLAGS =
nsMsgProcessingFlags.NotReportedClassified |
nsMsgProcessingFlags.ClassifyJunk;
// for list comprehension fun
function* range(begin, end) {
for (let i = begin; i < end; ++i) {
yield i;
}
}
/**
* We do not set properties on the messages until we perform a DB commit; this
* helper class tracks messages that we have indexed but are not yet marked
* as such on their header.
*/
var PendingCommitTracker = {
/**
* Maps message URIs to their gloda ids.
*
* I am not entirely sure why I chose the URI for the key rather than
* gloda folder ID + message key. Most likely it was to simplify debugging
* since the gloda folder ID is opaque while the URI is very informative. It
* is also possible I was afraid of IMAP folder renaming triggering a UID
* renumbering?
*/
_indexedMessagesPendingCommitByKey: {},
/**
* Map from the pending commit gloda id to a tuple of [the corresponding
* message header, dirtyState].
*/
_indexedMessagesPendingCommitByGlodaId: {},
/**
* Do we have a post-commit handler registered with this transaction yet?
*/
_pendingCommit: false,
/**
* The function gets called when the commit actually happens to flush our
* message id's.
*
* It is very possible that by the time this call happens we have left the
* folder and nulled out msgDatabase on the folder. Since nulling it out
* is what causes the commit, if we set the headers here without somehow
* forcing a commit, we will lose. Badly.
* Accordingly, we make a list of all the folders that the headers belong to
* as we iterate, make sure to re-attach their msgDatabase before forgetting
* the headers, then make sure to zero the msgDatabase again, triggering a
* commit. If there were a way to directly get the nsIMsgDatabase from the
* header we could do that and call commit directly. We don't track
* databases along with the headers since the headers can change because of
* moves and that would increase the number of moving parts.
*/
_commitCallback: function PendingCommitTracker_commitCallback() {
let foldersByURI = {};
let lastFolder = null;
for (let glodaId in
PendingCommitTracker._indexedMessagesPendingCommitByGlodaId) {
let [msgHdr, dirtyState] =
PendingCommitTracker._indexedMessagesPendingCommitByGlodaId[glodaId];
// Mark this message as indexed.
// It's conceivable the database could have gotten blown away, in which
// case the message headers are going to throw exceptions when we try
// and touch them. So we wrap this in a try block that complains about
// this unforeseen circumstance. (noteFolderDatabaseGettingBlownAway
// should have been called and avoided this situation in all known
// situations.)
try {
let curGlodaId = msgHdr.getUint32Property(GLODA_MESSAGE_ID_PROPERTY);
if (curGlodaId != glodaId)
msgHdr.setUint32Property(GLODA_MESSAGE_ID_PROPERTY, glodaId);
let headerDirty = msgHdr.getUint32Property(GLODA_DIRTY_PROPERTY);
if (headerDirty != dirtyState)
msgHdr.setUint32Property(GLODA_DIRTY_PROPERTY, dirtyState);
// Make sure this folder is in our foldersByURI map.
if (lastFolder == msgHdr.folder)
continue;
lastFolder = msgHdr.folder;
let folderURI = lastFolder.URI;
if (!(folderURI in foldersByURI))
foldersByURI[folderURI] = lastFolder;
}
catch (ex) {
GlodaMsgIndexer._log.error(
"Exception while attempting to mark message with gloda state after" +
"db commit", ex);
}
}
// it is vitally important to do this before we forget about the headers!
for (let uri in foldersByURI) {
let folder = foldersByURI[uri];
// This will not cause a parse. The database is in-memory since we have
// a header that belongs to it. This just causes the folder to
// re-acquire a reference from the database manager.
let ignoredDb = folder.msgDatabase;
// And this will cause a commit. (And must be done since we don't want
// to cause a leak.)
folder.msgDatabase = null;
}
PendingCommitTracker._indexedMessagesPendingCommitByGlodaId = {};
PendingCommitTracker._indexedMessagesPendingCommitByKey = {};
PendingCommitTracker._pendingCommit = false;
},
/**
* Track a message header that should be marked with the given gloda id when
* the database commits.
*/
track: function PendingCommitTracker_track(aMsgHdr, aGlodaId) {
let pendingKey = aMsgHdr.folder.URI + "#" + aMsgHdr.messageKey;
this._indexedMessagesPendingCommitByKey[pendingKey] = aGlodaId;
this._indexedMessagesPendingCommitByGlodaId[aGlodaId] =
[aMsgHdr, GlodaMsgIndexer.kMessageClean];
if (!this._pendingCommit) {
GlodaDatastore.runPostCommit(this._commitCallback);
this._pendingCommit = true;
}
},
/**
* Get the current state of a message header given that we cannot rely on just
* looking at the header's properties because we defer setting those
* until the SQLite commit happens.
*
* @return Tuple of [gloda id, dirty status].
*/
getGlodaState:
function PendingCommitTracker_getGlodaState(aMsgHdr) {
// If it's in the pending commit table, then the message is basically
// clean. Return that info.
let pendingKey = aMsgHdr.folder.URI + "#" + aMsgHdr.messageKey;
if (pendingKey in this._indexedMessagesPendingCommitByKey) {
let glodaId =
PendingCommitTracker._indexedMessagesPendingCommitByKey[pendingKey];
return [glodaId, this._indexedMessagesPendingCommitByGlodaId[glodaId][1]];
}
else {
// Otherwise the header's concept of state is correct.
let glodaId = aMsgHdr.getUint32Property(GLODA_MESSAGE_ID_PROPERTY);
let glodaDirty = aMsgHdr.getUint32Property(GLODA_DIRTY_PROPERTY);
return [glodaId, glodaDirty];
}
},
/**
* Update our structure to reflect moved headers. Moves are currently
* treated as weakly interesting and do not require a reindexing
* although collections will get notified. So our job is to to fix-up
* the pending commit information if the message has a pending commit.
*/
noteMove: function PendingCommitTracker_noteMove(aOldHdr, aNewHdr) {
let oldKey = aOldHdr.folder.URI + "#" + aOldHdr.messageKey;
if (!(oldKey in this._indexedMessagesPendingCommitByKey))
return;
let glodaId = this._indexedMessagesPendingCommitByKey[oldKey];
delete this._indexedMessagesPendingCommitByKey[oldKey];
let newKey = aNewHdr.folder.URI + "#" + aNewHdr.messageKey;
this._indexedMessagesPendingCommitByKey[newKey] = glodaId;
// only clobber the header, not the dirty state
this._indexedMessagesPendingCommitByGlodaId[glodaId][0] = aNewHdr;
},
/**
* A blind move is one where we have the source header but not the destination
* header. This happens for IMAP messages that do not involve offline fake
* headers.
* XXX Since IMAP moves will propagate the gloda-id/gloda-dirty bits for us,
* we could detect the other side of the move when it shows up as a
* msgsClassified event and restore the mapping information. Since the
* offline fake header case should now cover the bulk of IMAP move
* operations, we probably do not need to pursue this.
*
* We just re-dispatch to noteDirtyHeader because we can't do anything more
* clever.
*/
noteBlindMove: function PendingCommitTracker_noteBlindMove(aOldHdr) {
this.noteDirtyHeader(aOldHdr);
},
/**
* If a message is dirty we should stop tracking it for post-commit
* purposes. This is not because we don't want to write to its header
* when we commit as much as that we want to avoid |getHeaderGlodaState|
* reporting that the message is clean. We could complicate our state
* by storing that information, but this is easier and ends up the same
* in the end.
*/
noteDirtyHeader: function PendingCommitTracker_noteDirtyHeader(aMsgHdr) {
let pendingKey = aMsgHdr.folder.URI + "#" + aMsgHdr.messageKey;
if (!(pendingKey in this._indexedMessagesPendingCommitByKey))
return;
// (It is important that we get the gloda id from our own structure!)
let glodaId = this._indexedMessagesPendingCommitByKey[pendingKey];
this._indexedMessagesPendingCommitByGlodaId[glodaId][1] =
GlodaMsgIndexer.kMessageDirty;
},
/**
* Sometimes a folder database gets blown away. This happens for one of two
* expected reasons right now:
* - Folder compaction.
* - Explicit reindexing of a folder via the folder properties "rebuild index"
* button.
*
* When this happens, we are basically out of luck and need to discard
* everything about the folder. The good news is that the folder compaction
* pass is clever enough to re-establish the linkages that are being lost
* when we drop these things on the floor. Reindexing of a folder is not
* clever enough to deal with this but is an exceptional case of last resort
* (the user should not normally be performing a reindex as part of daily
* operation), so we accept that messages may be redundantly indexed.
*/
noteFolderDatabaseGettingBlownAway:
function PendingCommitTracker_noteFolderDatabaseGettingBlownAway(
aMsgFolder) {
let uri = aMsgFolder.URI + "#";
for (let key in Iterator(this._indexedMessagesPendingCommitByKey, true)) {
// this is not as efficient as it could be, but compaction is relatively
// rare and the number of pending headers is generally going to be
// small.
if (key.indexOf(uri) == 0) {
delete this._indexedMessagesPendingCommitByKey[key];
}
}
},
};
/**
* This callback handles processing the asynchronous query results of
* |GlodaMsgIndexer.getMessagesByMessageID|.
*/
function MessagesByMessageIdCallback(aMsgIDToIndex, aResults,
aCallback, aCallbackThis) {
this.msgIDToIndex = aMsgIDToIndex;
this.results = aResults;
this.callback = aCallback;
this.callbackThis = aCallbackThis;
}
MessagesByMessageIdCallback.prototype = {
_log: Log4Moz.repository.getLogger("gloda.index_msg.mbm"),
onItemsAdded: function gloda_ds_mbmi_onItemsAdded(aItems, aCollection) {
// just outright bail if we are shutdown
if (GlodaDatastore.datastoreIsShutdown)
return;
this._log.debug("getting results...");
for (let message of aItems) {
this.results[this.msgIDToIndex[message.headerMessageID]].push(message);
}
},
onItemsModified: function () {},
onItemsRemoved: function () {},
onQueryCompleted: function gloda_ds_mbmi_onQueryCompleted(aCollection) {
// just outright bail if we are shutdown
if (GlodaDatastore.datastoreIsShutdown)
return;
if (this._log.level <= Log4Moz.Level.Debug)
this._log.debug("query completed, notifying... " + this.results);
this.callback.call(this.callbackThis, this.results);
}
};
/**
* The message indexer!
*
* === Message Indexing Strategy
* To these ends, we implement things like so:
*
* Mesage State Tracking
* - We store a property on all indexed headers indicating their gloda message
* id. This allows us to tell whether a message is indexed from the header,
* without having to consult the SQL database.
* - When we receive an event that indicates that a message's meta-data has
* changed and gloda needs to re-index the message, we set a property on the
* header that indicates the message is dirty. This property can indicate
* that the message needs to be re-indexed but the gloda-id is valid (dirty)
* or that the message's gloda-id is invalid (filthy) because the gloda
* database has been blown away.
* - We track whether a folder is up-to-date on our GlodaFolder representation
* using a concept of dirtiness, just like messages. Like messages, a folder
* can be dirty or filthy. A dirty folder has at least one dirty message in
* it which means we should scan the folder. A filthy folder means that
* every message in the folder should be considered filthy. Folders start
* out filthy when Gloda is first told about them indicating we cannot
* trust any of the gloda-id's in the folders. Filthy folders are downgraded
* to dirty folders after we mark all of the headers with gloda-id's filthy.
*
* Indexing Message Control
* - We index the headers of all IMAP messages. We index the bodies of all IMAP
* messages that are offline. We index all local messages. We plan to avoid
* indexing news messages.
* - We would like a way to express desires about indexing that either don't
* confound offline storage with indexing, or actually allow some choice.
*
* Indexing Messages
* - We have two major modes of indexing: sweep and event-driven. When we
* start up we kick off an indexing sweep. We use event-driven indexing
* as we receive events for eligible messages, but if we get too many
* events we start dropping them on the floor and just flag that an indexing
* sweep is required.
* - The sweep initiates folder indexing jobs based on the priorities assigned
* to folders. Folder indexing uses a filtered message enumerator to find
* messages that need to be indexed, minimizing wasteful exposure of message
* headers to XPConnect that we would not end up indexing.
* - For local folders, we use GetDatabaseWithReparse to ensure that the .msf
* file exists. For IMAP folders, we simply use GetDatabase because we know
* the auto-sync logic will make sure that the folder is up-to-date and we
* want to avoid creating problems through use of updateFolder.
*
* Junk Mail
* - We do not index junk. We do not index messages until the junk/non-junk
* determination has been made. If a message gets marked as junk, we act like
* it was deleted.
* - We know when a message is actively queued for junk processing thanks to
* folder processing flags. nsMsgDBFolder::CallFilterPlugins does this
* prior to initiating spam processing. Unfortunately, this method does not
* get called until after we receive the notification about the existence of
* the header. How long after can vary on different factors. The longest
* delay is in the IMAP case where there is a filter that requires the
* message body to be present; the method does not get called until all the
* bodies are downloaded.
*
*/
var GlodaMsgIndexer = {
/**
* A partial attempt to generalize to support multiple databases. Each
* database would have its own datastore would have its own indexer. But
* we rather inter-mingle our use of this field with the singleton global
* GlodaDatastore.
*/
_datastore: GlodaDatastore,
_log: Log4Moz.repository.getLogger("gloda.index_msg"),
_junkService: MailServices.junk,
name: "index_msg",
/**
* Are we enabled, read: are we processing change events?
*/
_enabled: false,
get enabled() { return this._enabled; },
enable: function msg_indexer_enable() {
// initialize our listeners' this pointers
this._databaseAnnouncerListener.indexer = this;
this._msgFolderListener.indexer = this;
// register for:
// - folder loaded events, so we know when getDatabaseWithReparse has
// finished updating the index/what not (if it was't immediately
// available)
// - property changes (so we know when a message's read/starred state have
// changed.)
this._folderListener._init(this);
MailServices.mailSession.AddFolderListener(this._folderListener,
Ci.nsIFolderListener.intPropertyChanged |
Ci.nsIFolderListener.propertyFlagChanged |
Ci.nsIFolderListener.event);
MailServices.mfn.addListener(this._msgFolderListener,
// note: intentionally no msgAdded notification is requested.
Ci.nsIMsgFolderNotificationService.msgsClassified |
Ci.nsIMsgFolderNotificationService.msgsDeleted |
Ci.nsIMsgFolderNotificationService.msgsMoveCopyCompleted |
Ci.nsIMsgFolderNotificationService.msgKeyChanged |
Ci.nsIMsgFolderNotificationService.folderAdded |
Ci.nsIMsgFolderNotificationService.folderDeleted |
Ci.nsIMsgFolderNotificationService.folderMoveCopyCompleted |
Ci.nsIMsgFolderNotificationService.folderRenamed |
Ci.nsIMsgFolderNotificationService.itemEvent);
this._enabled = true;
this._considerSchemaMigration();
this._log.info("Event-Driven Indexing is now " + this._enabled);
},
disable: function msg_indexer_disable() {
// remove FolderLoaded notification listener
MailServices.mailSession.RemoveFolderListener(this._folderListener);
MailServices.mfn.removeListener(this._msgFolderListener);
this._indexerLeaveFolder(); // nop if we aren't "in" a folder
this._enabled = false;
this._log.info("Event-Driven Indexing is now " + this._enabled);
},
/**
* Indicates that we have pending deletions to process, meaning that there
* are gloda message rows flagged for deletion. If this value is a boolean,
* it means the value is known reliably. If this value is null, it means
* that we don't know, likely because we have started up and have not checked
* the database.
*/
pendingDeletions: null,
/**
* The message (or folder state) is believed up-to-date.
*/
kMessageClean: 0,
/**
* The message (or folder) is known to not be up-to-date. In the case of
* folders, this means that some of the messages in the folder may be dirty.
* However, because of the way our indexing works, it is possible there may
* actually be no dirty messages in a folder. (We attempt to process
* messages in an event-driven fashion for a finite number of messages, but
* because we can quit without completing processing of the queue, we need to
* mark the folder dirty, just-in-case.) (We could do some extra leg-work
* and do a better job of marking the folder clean again.)
*/
kMessageDirty: 1,
/**
* We have not indexed the folder at all, but messages in the folder think
* they are indexed. We downgrade the folder to just kMessageDirty after
* marking all the messages in the folder as dirty. We do this so that if we
* have to stop indexing the folder we can still build on our progress next
* time we enter the folder.
* We mark all folders filthy when (re-)creating the database because there
* may be previous state left over from an earlier database.
*/
kMessageFilthy: 2,
/**
* A message addition job yet to be (completely) processed. Since message
* addition events come to us one-by-one, in order to aggregate them into a
* job, we need something like this. It's up to the indexing loop to
* decide when to null this out; it can either do it when it first starts
* processing it, or when it has processed the last thing. It's really a
* question of whether we want retrograde motion in the folder progress bar
* or the message progress bar.
*/
_pendingAddJob: null,
/**
* The number of messages that we should queue for processing before letting
* them fall on the floor and relying on our folder-walking logic to ensure
* that the messages are indexed.
* The reason we allow for queueing messages in an event-driven fashion is
* that once we have reached a steady-state, it is preferable to be able to
* deal with new messages and modified meta-data in a prompt fasion rather
* than having to (potentially) walk every folder in the system just to find
* the message that the user changed the tag on.
*/
_indexMaxEventQueueMessages: 20,
/**
* Unit testing hook to get us to emit additional logging that verges on
* inane for general usage but is helpful in unit test output to get a lay
* of the land and for paranoia reasons.
*/
_unitTestSuperVerbose: false,
/** The GlodaFolder corresponding to the folder we are indexing. */
_indexingGlodaFolder: null,
/** The nsIMsgFolder we are currently indexing. */
_indexingFolder: null,
/** The nsIMsgDatabase we are currently indexing. */
_indexingDatabase: null,
/**
* The iterator we are using to iterate over the headers in
* this._indexingDatabase.
*/
_indexingIterator: null,
/** folder whose entry we are pending on */
_pendingFolderEntry: null,
// copy-down the work constants from Gloda
kWorkSync: Gloda.kWorkSync,
kWorkAsync: Gloda.kWorkAsync,
kWorkDone: Gloda.kWorkDone,
kWorkPause: Gloda.kWorkPause,
kWorkDoneWithResult: Gloda.kWorkDoneWithResult,
/**
* Async common logic that we want to deal with the given folder ID. Besides
* cutting down on duplicate code, this ensures that we are listening on
* the folder in case it tries to go away when we are using it.
*
* @return true when the folder was successfully entered, false when we need
* to pend on notification of updating of the folder (due to re-parsing
* or what have you). In the event of an actual problem, an exception
* will escape.
*/
_indexerEnterFolder: function gloda_index_indexerEnterFolder(aFolderID) {
// leave the folder if we haven't explicitly left it.
if (this._indexingFolder !== null) {
this._indexerLeaveFolder();
}
this._indexingGlodaFolder = GlodaDatastore._mapFolderID(aFolderID);
this._indexingFolder = this._indexingGlodaFolder.getXPCOMFolder(
this._indexingGlodaFolder.kActivityIndexing);
if (this._indexingFolder)
this._log.debug("Entering folder: " + this._indexingFolder.URI);
try {
// The msf may need to be created or otherwise updated for local folders.
// This may require yielding until such time as the msf has been created.
try {
if (this._indexingFolder instanceof nsIMsgLocalMailFolder) {
this._indexingDatabase =
this._indexingFolder.getDatabaseWithReparse(null,
null);
}
// we need do nothing special for IMAP, news, or other
}
// getDatabaseWithReparse can return either NS_ERROR_NOT_INITIALIZED or
// NS_MSG_ERROR_FOLDER_SUMMARY_OUT_OF_DATE if the net result is that it
// is going to send us a notification when the reparse has completed.
// (note that although internally NS_MSG_ERROR_FOLDER_SUMMARY_MISSING
// might get flung around, it won't make it out to us, and will instead
// be permuted into an NS_ERROR_NOT_INITIALIZED.)
catch (e) {
if ((e.result == Cr.NS_ERROR_NOT_INITIALIZED) ||
(e.result == NS_MSG_ERROR_FOLDER_SUMMARY_OUT_OF_DATE)) {
// this means that we need to pend on the update; the listener for
// FolderLoaded events will call _indexerCompletePendingFolderEntry.
this._log.debug("Pending on folder load...");
this._pendingFolderEntry = this._indexingFolder;
return this.kWorkAsync;
} else {
throw e;
}
}
// we get an nsIMsgDatabase out of this (unsurprisingly) which
// explicitly inherits from nsIDBChangeAnnouncer, which has the
// AddListener call we want.
if (this._indexingDatabase == null)
this._indexingDatabase = this._indexingFolder.msgDatabase;
this._indexingDatabase.AddListener(this._databaseAnnouncerListener);
}
catch (ex) {
this._log.error("Problem entering folder: " +
(this._indexingFolder ?
this._indexingFolder.prettiestName : "unknown") +
", skipping. Error was: " + ex.fileName + ":" +
ex.lineNumber + ": " + ex);
this._indexingGlodaFolder.indexing = false;
this._indexingFolder = null;
this._indexingGlodaFolder = null;
this._indexingDatabase = null;
this._indexingEnumerator = null;
// re-throw, we just wanted to make sure this junk is cleaned up and
// get localized error logging...
throw ex;
}
return this.kWorkSync;
},
/**
* If the folder was still parsing/updating when we tried to enter, then this
* handler will get called by the listener who got the FolderLoaded message.
* All we need to do is get the database reference, register a listener on
* the db, and retrieve an iterator if desired.
*/
_indexerCompletePendingFolderEntry:
function gloda_indexer_indexerCompletePendingFolderEntry() {
this._indexingDatabase = this._indexingFolder.msgDatabase;
this._indexingDatabase.AddListener(this._databaseAnnouncerListener);
this._log.debug("...Folder Loaded!");
// the load is no longer pending; we certainly don't want more notifications
this._pendingFolderEntry = null;
// indexerEnterFolder returned kWorkAsync, which means we need to notify
// the callback driver to get things going again.
GlodaIndexer.callbackDriver();
},
/**
* Enumerate all messages in the folder.
*/
kEnumAllMsgs: 0,
/**
* Enumerate messages that look like they need to be indexed.
*/
kEnumMsgsToIndex: 1,
/**
* Enumerate messages that are already indexed.
*/
kEnumIndexedMsgs: 2,
/**
* Synchronous helper to get an enumerator for the current folder (as found
* in |_indexingFolder|.
*
* @param aEnumKind One of |kEnumAllMsgs|, |kEnumMsgsToIndex|, or
* |kEnumIndexedMsgs|.
* @param [aAllowPreBadIds=false] Only valid for |kEnumIndexedMsgs|, tells us
* that we should treat message with any gloda-id as dirty, not just
* messages that have non-bad message id's.
*/
_indexerGetEnumerator: function gloda_indexer_indexerGetEnumerator(
aEnumKind, aAllowPreBadIds) {
if (aEnumKind == this.kEnumMsgsToIndex) {
// We need to create search terms for messages to index. Messages should
// be indexed if they're indexable (local or offline and not expunged)
// and either: haven't been indexed, are dirty, or are marked with with
// a former GLODA_BAD_MESSAGE_ID that is no longer our bad marker. (Our
// bad marker can change on minor schema revs so that we can try and
// reindex those messages exactly once and without needing to go through
// a pass to mark them as needing one more try.)
// The basic search expression is:
// ((GLODA_MESSAGE_ID_PROPERTY Is 0) ||
// (GLODA_MESSAGE_ID_PROPERTY Is GLODA_OLD_BAD_MESSAGE_ID) ||
// (GLODA_DIRTY_PROPERTY Isnt 0)) &&
// (JUNK_SCORE_PROPERTY Isnt 100)
// If the folder !isLocal we add the terms:
// - if the folder is offline -- && (Status Is nsMsgMessageFlags.Offline)
// - && (Status Isnt nsMsgMessageFlags.Expunged)
let searchSession = Cc["@mozilla.org/messenger/searchSession;1"]
.createInstance(Ci.nsIMsgSearchSession);
let searchTerms = Cc["@mozilla.org/array;1"]
.createInstance(Ci.nsIMutableArray);
let isLocal = this._indexingFolder instanceof nsIMsgLocalMailFolder;
searchSession.addScopeTerm(Ci.nsMsgSearchScope.offlineMail,
this._indexingFolder);
let nsMsgSearchAttrib = Ci.nsMsgSearchAttrib;
let nsMsgSearchOp = Ci.nsMsgSearchOp;
// first term: (GLODA_MESSAGE_ID_PROPERTY Is 0
let searchTerm = searchSession.createTerm();
searchTerm.booleanAnd = false; // actually don't care here
searchTerm.beginsGrouping = true;
searchTerm.attrib = nsMsgSearchAttrib.Uint32HdrProperty;
searchTerm.op = nsMsgSearchOp.Is;
let value = searchTerm.value;
value.attrib = searchTerm.attrib;
value.status = 0;
searchTerm.value = value;
searchTerm.hdrProperty = GLODA_MESSAGE_ID_PROPERTY;
searchTerms.appendElement(searchTerm, false);
// second term: || GLODA_MESSAGE_ID_PROPERTY Is GLODA_OLD_BAD_MESSAGE_ID
searchTerm = searchSession.createTerm();
searchTerm.booleanAnd = false; // OR
searchTerm.attrib = nsMsgSearchAttrib.Uint32HdrProperty;
searchTerm.op = nsMsgSearchOp.Is;
value = searchTerm.value;
value.attrib = searchTerm.attrib;
value.status = GLODA_OLD_BAD_MESSAGE_ID;
searchTerm.value = value;
searchTerm.hdrProperty = GLODA_MESSAGE_ID_PROPERTY;
searchTerms.appendElement(searchTerm, false);
// third term: || GLODA_DIRTY_PROPERTY Isnt 0 )
searchTerm = searchSession.createTerm();
searchTerm.booleanAnd = false;
searchTerm.endsGrouping = true;
searchTerm.attrib = nsMsgSearchAttrib.Uint32HdrProperty;
searchTerm.op = nsMsgSearchOp.Isnt;
value = searchTerm.value;
value.attrib = searchTerm.attrib;
value.status = 0;
searchTerm.value = value;
searchTerm.hdrProperty = GLODA_DIRTY_PROPERTY;
searchTerms.appendElement(searchTerm, false);
// JUNK_SCORE_PROPERTY Isnt 100
// For symmetry with our event-driven stuff, we just directly deal with
// the header property.
searchTerm = searchSession.createTerm();
searchTerm.booleanAnd = true;
searchTerm.attrib = nsMsgSearchAttrib.HdrProperty;
searchTerm.op = nsMsgSearchOp.Isnt;
value = searchTerm.value;
value.attrib = searchTerm.attrib;
value.str = JUNK_SPAM_SCORE_STR;
searchTerm.value = value;
searchTerm.hdrProperty = JUNK_SCORE_PROPERTY;
searchTerms.appendElement(searchTerm, false);
if (!isLocal)
{
// If the folder is offline, then the message should be too
if (this._indexingFolder.flags & Ci.nsMsgFolderFlags.Offline) {
// third term: && Status Is nsMsgMessageFlags.Offline
searchTerm = searchSession.createTerm();
searchTerm.booleanAnd = true;
searchTerm.attrib = nsMsgSearchAttrib.MsgStatus;
searchTerm.op = nsMsgSearchOp.Is;
value = searchTerm.value;
value.attrib = searchTerm.attrib;
value.status = nsMsgMessageFlags.Offline;
searchTerm.value = value;
searchTerms.appendElement(searchTerm, false);
}
// fourth term: && Status Isnt nsMsgMessageFlags.Expunged
searchTerm = searchSession.createTerm();
searchTerm.booleanAnd = true;
searchTerm.attrib = nsMsgSearchAttrib.MsgStatus;
searchTerm.op = nsMsgSearchOp.Isnt;
value = searchTerm.value;
value.attrib = searchTerm.attrib;
value.status = nsMsgMessageFlags.Expunged;
searchTerm.value = value;
searchTerms.appendElement(searchTerm, false);
}
this._indexingEnumerator =
this._indexingDatabase.getFilterEnumerator(searchTerms, true);
}
else if (aEnumKind == this.kEnumIndexedMsgs) {
// Enumerate only messages that are already indexed. This comes out to:
// ((GLODA_MESSAGE_ID_PROPERTY > GLODA_FIRST_VALID_MESSAGE_ID-1) &&
// (GLODA_DIRTY_PROPERTY Isnt kMessageFilthy))
// In English, a message is indexed if (by clause):
// 1) The message has a gloda-id and that gloda-id is in the valid range
// (and not in the bad message marker range).
// 2) The message has not been marked filthy (which invalidates the
// gloda-id.) We also assume that the folder would not have been
// entered at all if it was marked filthy.
let searchSession = Cc["@mozilla.org/messenger/searchSession;1"]
.createInstance(Ci.nsIMsgSearchSession);
let searchTerms = Cc["@mozilla.org/array;1"]
.createInstance(Ci.nsIMutableArray);
searchSession.addScopeTerm(Ci.nsMsgSearchScope.offlineMail,
this._indexingFolder);
let nsMsgSearchAttrib = Ci.nsMsgSearchAttrib;
let nsMsgSearchOp = Ci.nsMsgSearchOp;
// first term: (GLODA_MESSAGE_ID_PROPERTY > GLODA_FIRST_VALID_MESSAGE_ID-1
let searchTerm = searchSession.createTerm();
searchTerm.booleanAnd = false; // actually don't care here
searchTerm.beginsGrouping = true;
searchTerm.attrib = nsMsgSearchAttrib.Uint32HdrProperty;
// use != 0 if we're allow pre-bad ids.
searchTerm.op = aAllowPreBadIds ? nsMsgSearchOp.Isnt
: nsMsgSearchOp.IsGreaterThan;
let value = searchTerm.value;
value.attrib = searchTerm.attrib;
value.status = aAllowPreBadIds ? 0 : (GLODA_FIRST_VALID_MESSAGE_ID - 1);
searchTerm.value = value;
searchTerm.hdrProperty = GLODA_MESSAGE_ID_PROPERTY;
searchTerms.appendElement(searchTerm, false);
// second term: && GLODA_DIRTY_PROPERTY Isnt kMessageFilthy)
searchTerm = searchSession.createTerm();
searchTerm.booleanAnd = true;
searchTerm.endsGrouping = true;
searchTerm.attrib = nsMsgSearchAttrib.Uint32HdrProperty;
searchTerm.op = nsMsgSearchOp.Isnt;
value = searchTerm.value;
value.attrib = searchTerm.attrib;
value.status = this.kMessageFilthy;
searchTerm.value = value;
searchTerm.hdrProperty = GLODA_DIRTY_PROPERTY;
searchTerms.appendElement(searchTerm, false);
// The use-case of already indexed messages does not want them reversed;
// we care about seeing the message keys in order.
this._indexingEnumerator =
this._indexingDatabase.getFilterEnumerator(searchTerms, false);
}
else if (aEnumKind == this.kEnumAllMsgs) {
this._indexingEnumerator =
this._indexingDatabase.ReverseEnumerateMessages();
}
else {
throw new Error("Unknown enumerator type requested:" + aEnumKind);
}
},
_indexerLeaveFolder: function gloda_index_indexerLeaveFolder() {
if (this._indexingFolder !== null) {
if (this._indexingDatabase) {
this._indexingDatabase.Commit(Ci.nsMsgDBCommitType.kLargeCommit);
// remove our listener!
this._indexingDatabase.RemoveListener(this._databaseAnnouncerListener);
}
// let the gloda folder know we are done indexing
this._indexingGlodaFolder.indexing = false;
// null everyone out
this._indexingFolder = null;
this._indexingGlodaFolder = null;
this._indexingDatabase = null;
this._indexingEnumerator = null;
}
},
/**
* Event fed to us by our nsIFolderListener when a folder is loaded. We use
* this event to know when a folder we were trying to open to index is
* actually ready to be indexed. (The summary may have not existed, may have
* been out of date, or otherwise.)
*
* @param aFolder An nsIMsgFolder, already QI'd.
*/
_onFolderLoaded: function gloda_index_onFolderLoaded(aFolder) {
if ((this._pendingFolderEntry !== null) &&
(aFolder.URI == this._pendingFolderEntry.URI))
this._indexerCompletePendingFolderEntry();
},
// it's a getter so we can reference 'this'. we could memoize.
get workers() {
return [
["folderSweep", {
worker: this._worker_indexingSweep,
jobCanceled: this._cleanup_indexingSweep,
cleanup: this._cleanup_indexingSweep,
}],
["folder", {
worker: this._worker_folderIndex,
recover: this._recover_indexMessage,
cleanup: this._cleanup_indexing,
}],
["folderCompact", {
worker: this._worker_folderCompactionPass,
// compaction enters the folder so needs to know how to leave
cleanup: this._cleanup_indexing,
}],
["message", {
worker: this._worker_messageIndex,
onSchedule: this._schedule_messageIndex,
jobCanceled: this._canceled_messageIndex,
recover: this._recover_indexMessage,
cleanup: this._cleanup_indexing,
}],
["delete", {
worker: this._worker_processDeletes,
}],
["fixMissingContacts", {
worker: this._worker_fixMissingContacts,
}],
];
},
_schemaMigrationInitiated: false,
_considerSchemaMigration: function() {
if (!this._schemaMigrationInitiated &&
GlodaDatastore._actualSchemaVersion === 26) {
let job = new IndexingJob("fixMissingContacts", null);
GlodaIndexer.indexJob(job);
this._schemaMigrationInitiated = true;
}
},
initialSweep: function() {
this.indexingSweepNeeded = true;
},
_indexingSweepActive: false,
/**
* Indicate that an indexing sweep is desired. We kick-off an indexing
* sweep at start-up and whenever we receive an event-based notification
* that we either can't process as an event or that we normally handle
* during the sweep pass anyways.
*/
set indexingSweepNeeded(aNeeded) {
if (!this._indexingSweepActive && aNeeded) {
let job = new IndexingJob("folderSweep", null);
job.mappedFolders = false;
GlodaIndexer.indexJob(job);
this._indexingSweepActive = true;
}
},
/**
* Performs the folder sweep, locating folders that should be indexed, and
* creating a folder indexing job for them, and rescheduling itself for
* execution after that job is completed. Once it indexes all the folders,
* if we believe we have deletions to process (or just don't know), it kicks
* off a deletion processing job.
*
* Folder traversal logic is based off the spotlight/vista indexer code; we
* retrieve the list of servers and folders each time want to find a new
* folder to index. This avoids needing to maintain a perfect model of the
* folder hierarchy at all times. (We may eventually want to do that, but
* this is sufficient and safe for now.) Although our use of dirty flags on
* the folders allows us to avoid tracking the 'last folder' we processed,
* we do so to avoid getting 'trapped' in a folder with a high rate of
* changes.
*/
_worker_indexingSweep: function* gloda_worker_indexingSweep(aJob) {
if (!aJob.mappedFolders) {
// Walk the folders and make sure all the folders we would want to index
// are mapped. Build up a list of GlodaFolders as we go, so that we can
// sort them by their indexing priority.
let foldersToProcess = aJob.foldersToProcess = [];
let allFolders = MailServices.accounts.allFolders;
for (let folder in fixIterator(allFolders, Ci.nsIMsgFolder)) {
if (this.shouldIndexFolder(folder))
foldersToProcess.push(Gloda.getFolderForFolder(folder));
}
// sort the folders by priority (descending)
foldersToProcess.sort(function (a, b) {
return b.indexingPriority - a.indexingPriority;
});
aJob.mappedFolders = true;
}
// -- process the folders (in sorted order)
while (aJob.foldersToProcess.length) {
let glodaFolder = aJob.foldersToProcess.shift();
// ignore folders that:
// - have been deleted out of existence!
// - are not dirty/have not been compacted
// - are actively being compacted
if (glodaFolder._deleted ||
(!glodaFolder.dirtyStatus && !glodaFolder.compacted) ||
glodaFolder.compacting)
continue;
// If the folder is marked as compacted, give it a compaction job.
if (glodaFolder.compacted)
GlodaIndexer.indexJob(new IndexingJob("folderCompact", glodaFolder.id));
// add a job for the folder indexing if it was dirty
if (glodaFolder.dirtyStatus)
GlodaIndexer.indexJob(new IndexingJob("folder", glodaFolder.id));
// re-schedule this job (although this worker will die)
GlodaIndexer.indexJob(aJob);
yield this.kWorkDone;
}
// consider deletion
if (this.pendingDeletions || this.pendingDeletions === null)
GlodaIndexer.indexJob(new IndexingJob("delete", null));
// we don't have any more work to do...
this._indexingSweepActive = false;
yield this.kWorkDone;
},
/**
* The only state we need to cleanup is that there is no longer an active
* indexing sweep.
*/
_cleanup_indexingSweep: function gloda_canceled_indexingSweep(aJob) {
this._indexingSweepActive = false;
},
/**
* The number of headers to look at before yielding with kWorkSync. This
* is for time-slicing purposes so we still yield to the UI periodically.
*/
HEADER_CHECK_SYNC_BLOCK_SIZE: 25,
/**
* The number of headers to look at before calling
*/
HEADER_CHECK_GC_BLOCK_SIZE: 256,
FOLDER_COMPACTION_PASS_BATCH_SIZE: 512,
/**
* Special indexing pass for (local) folders than have been compacted. The
* compaction can cause message keys to change because message keys in local
* folders are simply offsets into the mbox file. Accordingly, we need to
* update the gloda records/objects to point them at the new message key.
*
* Our general algorithm is to perform two traversals in parallel. The first
* is a straightforward enumeration of the message headers in the folder that
* apparently have been already indexed. These provide us with the message
* key and the "gloda-id" property.
* The second is a list of tuples containing a gloda message id, its current
* message key per the gloda database, and the message-id header. We re-fill
* the list with batches on-demand. This allows us to both avoid dispatching
* needless UPDATEs as well as deal with messages that were tracked by the
* PendingCommitTracker but were discarded by the compaction notification.
*
* We end up processing two streams of gloda-id's and some extra info. In
* the normal case we expect these two streams to line up exactly and all
* we need to do is update the message key if it has changed.
*
* There are a few exceptional cases where things do not line up:
* 1) The gloda database knows about a message that the enumerator does not
* know about...
* a) This message exists in the folder (identified using its message-id
* header). This means the message got indexed but PendingCommitTracker
* had to forget about the info when the compaction happened. We
* re-establish the link and track the message in PendingCommitTracker
* again.
* b) The message does not exist in the folder. This means the message got
* indexed, PendingCommitTracker had to forget about the info, and
* then the message either got moved or deleted before now. We mark
* the message as deleted; this allows the gloda message to be reused
* if the move target has not yet been indexed or purged if it already
* has been and the gloda message is a duplicate. And obviously, if the
* event that happened was actually a delete, then the delete is the
* right thing to do.
* 2) The enumerator knows about a message that the gloda database does not
* know about. This is unexpected and should not happen. We log a
* warning. We are able to differentiate this case from case #1a by
* retrieving the message header associated with the next gloda message
* (using the message-id header per 1a again). If the gloda message's
* message key is after the enumerator's message key then we know this is
* case #2. (It implies an insertion in the enumerator stream which is how
* we define the unexpected case.)
*
* Besides updating the database rows, we also need to make sure that
* in-memory representations are updated. Immediately after dispatching
* UPDATE changes to the database we use the same set of data to walk the
* live collections and update any affected messages. We are then able to
* discard the information. Although this means that we will have to
* potentially walk the live collections multiple times, unless something
* has gone horribly wrong, the number of collections should be reasonable
* and the lookups are cheap. We bias batch sizes accordingly.
*
* Because we operate based on chunks we need to make sure that when we
* actually deal with multiple chunks that we don't step on our own feet with
* our database updates. Since compaction of message key K results in a new
* message key K' such that K' <= K, we can reliably issue database
* updates for all values <= K. Which means our feet are safe no matter
* when we issue the update command. For maximum cache benefit, we issue
* our updates prior to our new query since they should still be maximally
* hot at that point.
*/
_worker_folderCompactionPass:
function* gloda_worker_folderCompactionPass(aJob, aCallbackHandle) {
yield this._indexerEnterFolder(aJob.id);
// It's conceivable that with a folder sweep we might end up trying to
// compact a folder twice. Bail early in this case.
if (!this._indexingGlodaFolder.compacted)
yield this.kWorkDone;
// this is a forward enumeration (sometimes we reverse enumerate; not here)
this._indexerGetEnumerator(this.kEnumIndexedMsgs);
const HEADER_CHECK_SYNC_BLOCK_SIZE = this.HEADER_CHECK_SYNC_BLOCK_SIZE;
const HEADER_CHECK_GC_BLOCK_SIZE = this.HEADER_CHECK_GC_BLOCK_SIZE;
const FOLDER_COMPACTION_PASS_BATCH_SIZE =
this.FOLDER_COMPACTION_PASS_BATCH_SIZE;
// Tuples of [gloda id, message key, message-id header] from
// folderCompactionPassBlockFetch
let glodaIdsMsgKeysHeaderIds = [];
// Unpack each tuple from glodaIdsMsgKeysHeaderIds into these guys.
// (Initialize oldMessageKey because we use it to kickstart our query.)
let oldGlodaId, oldMessageKey = -1, oldHeaderMessageId;
// parallel lists of gloda ids and message keys to pass to
// GlodaDatastore.updateMessageLocations
let updateGlodaIds = [];
let updateMessageKeys = [];
// list of gloda id's to mark deleted
let deleteGlodaIds = [];
let exceptionalMessages = {};
// for GC reasons we need to track the number of headers seen
let numHeadersSeen = 0;
// We are consuming two lists; our loop structure has to reflect that.
let headerIter = Iterator(fixIterator(this._indexingEnumerator,
nsIMsgDBHdr));
let mayHaveMoreGlodaMessages = true;
let keepIterHeader = false;
let keepGlodaTuple = false;
let msgHdr = null;
while (headerIter || mayHaveMoreGlodaMessages) {
let glodaId;
if (headerIter) {
try {
if (!keepIterHeader)
msgHdr = headerIter.next();
else
keepIterHeader = false;
}
catch (ex) {
if (ex instanceof StopIteration) {
headerIter = null;
msgHdr = null;
// do the loop check again
continue;
} else {
throw ex;
}
}
}
if (msgHdr) {
numHeadersSeen++;
if (numHeadersSeen % HEADER_CHECK_SYNC_BLOCK_SIZE == 0)
yield this.kWorkSync;
if (numHeadersSeen % HEADER_CHECK_GC_BLOCK_SIZE == 0)
GlodaUtils.considerHeaderBasedGC(HEADER_CHECK_GC_BLOCK_SIZE);
// There is no need to check with PendingCommitTracker. If a message
// somehow got indexed between the time the compaction killed
// everything and the time we run, that is a bug.
glodaId = msgHdr.getUint32Property(GLODA_MESSAGE_ID_PROPERTY);
// (there is also no need to check for gloda dirty since the enumerator
// filtered that for us.)
}
// get more [gloda id, message key, message-id header] tuples if out
if (!glodaIdsMsgKeysHeaderIds.length && mayHaveMoreGlodaMessages) {
// Since we operate on blocks, getting a new block implies we should
// flush the last block if applicable.
if (updateGlodaIds.length) {
GlodaDatastore.updateMessageLocations(updateGlodaIds,
updateMessageKeys,
aJob.id, true);
updateGlodaIds = [];
updateMessageKeys = [];
}
if (deleteGlodaIds.length) {
GlodaDatastore.markMessagesDeletedByIDs(deleteGlodaIds);
deleteGlodaIds = [];
}
GlodaDatastore.folderCompactionPassBlockFetch(
aJob.id, oldMessageKey + 1, FOLDER_COMPACTION_PASS_BATCH_SIZE,
aCallbackHandle.wrappedCallback);
glodaIdsMsgKeysHeaderIds = yield this.kWorkAsync;
// Reverse so we can use pop instead of shift and I don't need to be
// paranoid about performance.
glodaIdsMsgKeysHeaderIds.reverse();
if (!glodaIdsMsgKeysHeaderIds.length) {
mayHaveMoreGlodaMessages = false;
// We shouldn't be in the loop anymore if headerIter is dead now.
if (!headerIter)
break;
}
}
if (!keepGlodaTuple) {
if (mayHaveMoreGlodaMessages)
[oldGlodaId, oldMessageKey, oldHeaderMessageId] =
glodaIdsMsgKeysHeaderIds.pop();
else
oldGlodaId = oldMessageKey = oldHeaderMessageId = null;
}
else {
keepGlodaTuple = false;
}
// -- normal expected case
if (glodaId == oldGlodaId) {
// only need to do something if the key is not right
if (msgHdr.messageKey != oldMessageKey) {
updateGlodaIds.push(glodaId);
updateMessageKeys.push(msgHdr.messageKey);
}
}
// -- exceptional cases
else {
// This should always return a value unless something is very wrong.
// We do not want to catch the exception if one happens.
let idBasedHeader = oldHeaderMessageId ?
this._indexingDatabase.getMsgHdrForMessageID(oldHeaderMessageId) :
false;
// - Case 1b.
// We want to mark the message as deleted.
if (idBasedHeader == null) {
deleteGlodaIds.push(oldGlodaId);
}
// - Case 1a
// The expected case is that the message referenced by the gloda
// database precedes the header the enumerator told us about. This
// is expected because if PendingCommitTracker did not mark the
// message as indexed/clean then the enumerator would not tell us
// about it.
// Also, if we ran out of headers from the enumerator, this is a dead
// giveaway that this is the expected case.
else if (idBasedHeader &&
((msgHdr &&
idBasedHeader.messageKey < msgHdr.messageKey) ||
!msgHdr)) {
// tell the pending commit tracker about the gloda database one
PendingCommitTracker.track(idBasedHeader, oldGlodaId);
// and we might need to update the message key too
if (idBasedHeader.messageKey != oldMessageKey) {
updateGlodaIds.push(oldGlodaId);
updateMessageKeys.push(idBasedHeader.messageKey);
}
// Take another pass through the loop so that we check the
// enumerator header against the next message in the gloda
// database.
keepIterHeader = true;
}
// - Case 2
// Whereas if the message referenced by gloda has a message key
// greater than the one returned by the enumerator, then we have a
// header claiming to be indexed by gloda that gloda does not
// actually know about. This is exceptional and gets a warning.
else if (msgHdr) {
this._log.warn("Observed header that claims to be gloda indexed " +
"but that gloda has never heard of during " +
"compaction." +
" In folder: " + msgHdr.folder.URI +
" sketchy key: " + msgHdr.messageKey +
" subject: " + msgHdr.mime2DecodedSubject);
// Keep this tuple around for the next enumerator provided header
keepGlodaTuple = true;
}
}
}
// If we don't flush the update, no one will!
if (updateGlodaIds.length)
GlodaDatastore.updateMessageLocations(updateGlodaIds,
updateMessageKeys,
aJob.id, true);
if (deleteGlodaIds.length)
GlodaDatastore.markMessagesDeletedByIDs(deleteGlodaIds);
this._indexingGlodaFolder._setCompactedState(false);
this._indexerLeaveFolder();
yield this.kWorkDone;
},
/**
* Index the contents of a folder.
*/
_worker_folderIndex:
function* gloda_worker_folderIndex(aJob, aCallbackHandle) {
let logDebug = this._log.level <= Log4Moz.Level.Debug;
yield this._indexerEnterFolder(aJob.id);
if (!this.shouldIndexFolder(this._indexingFolder)) {
aJob.safelyInvokeCallback(true);
yield this.kWorkDone;
}
// Make sure listeners get notified about this job.
GlodaIndexer._notifyListeners();
// there is of course a cost to all this header investigation even if we
// don't do something. so we will yield with kWorkSync for every block.
const HEADER_CHECK_SYNC_BLOCK_SIZE = this.HEADER_CHECK_SYNC_BLOCK_SIZE;
const HEADER_CHECK_GC_BLOCK_SIZE = this.HEADER_CHECK_GC_BLOCK_SIZE;
// we can safely presume if we are here that this folder has been selected
// for offline processing...
// -- Filthy Folder
// A filthy folder may have misleading properties on the message that claim
// the message is indexed. They are misleading because the database, for
// whatever reason, does not have the messages (accurately) indexed.
// We need to walk all the messages and mark them filthy if they have a
// dirty property. Once we have done this, we can downgrade the folder's
// dirty status to plain dirty. We do this rather than trying to process
// everyone in one go in a filthy context because if we have to terminate
// indexing before we quit, we don't want to have to re-index messages next
// time. (This could even lead to never completing indexing in a
// pathological situation.)
let glodaFolder = GlodaDatastore._mapFolder(this._indexingFolder);
if (glodaFolder.dirtyStatus == glodaFolder.kFolderFilthy) {
this._indexerGetEnumerator(this.kEnumIndexedMsgs, true);
let count = 0;
for (let msgHdr in fixIterator(this._indexingEnumerator, nsIMsgDBHdr)) {
// we still need to avoid locking up the UI, pause periodically...
if (++count % HEADER_CHECK_SYNC_BLOCK_SIZE == 0)
yield this.kWorkSync;
if (count % HEADER_CHECK_GC_BLOCK_SIZE == 0)
GlodaUtils.considerHeaderBasedGC(HEADER_CHECK_GC_BLOCK_SIZE);
let glodaMessageId = msgHdr.getUint32Property(
GLODA_MESSAGE_ID_PROPERTY);
// if it has a gloda message id, we need to mark it filthy
if (glodaMessageId != 0)
msgHdr.setUint32Property(GLODA_DIRTY_PROPERTY, this.kMessageFilthy);
// if it doesn't have a gloda message id, we will definitely index it,
// so no action is required.
}
// Commit the filthy status changes to the message database.
this._indexingDatabase.Commit(Ci.nsMsgDBCommitType.kLargeCommit);
// this will automatically persist to the database
glodaFolder._downgradeDirtyStatus(glodaFolder.kFolderDirty);
}
// Figure out whether we're supposed to index _everything_ or just what
// has not yet been indexed.
let force = ("force" in aJob) && aJob.force;
let enumeratorType = force ? this.kEnumAllMsgs : this.kEnumMsgsToIndex;
// Pass 1: count the number of messages to index.
// We do this in order to be able to report to the user what we're doing.
// TODO: give up after reaching a certain number of messages in folders
// with ridiculous numbers of messages and make the interface just say
// something like "over N messages to go."
this._indexerGetEnumerator(enumeratorType);
let numMessagesToIndex = 0;
let numMessagesOut = {};
// Keep going until we run out of headers.
while (this._indexingFolder.msgDatabase.nextMatchingHdrs(
this._indexingEnumerator,
HEADER_CHECK_SYNC_BLOCK_SIZE * 8, // this way is faster, do more
0, // moot, we don't return headers
null, // don't return headers, we just want the count
numMessagesOut)) {
numMessagesToIndex += numMessagesOut.value;
yield this.kWorkSync;
}
numMessagesToIndex += numMessagesOut.value;
aJob.goal = numMessagesToIndex;
if (numMessagesToIndex > 0) {
// We used up the iterator, get a new one.
this._indexerGetEnumerator(enumeratorType);
// Pass 2: index the messages.
let count = 0;
for (let msgHdr in fixIterator(this._indexingEnumerator, nsIMsgDBHdr)) {
// per above, we want to periodically release control while doing all
// this header traversal/investigation.
if (++count % HEADER_CHECK_SYNC_BLOCK_SIZE == 0)
yield this.kWorkSync;
if (count % HEADER_CHECK_GC_BLOCK_SIZE == 0)
GlodaUtils.considerHeaderBasedGC(HEADER_CHECK_GC_BLOCK_SIZE);
// To keep our counts more accurate, increment the offset before
// potentially skipping any messages.
++aJob.offset;
// Skip messages that have not yet been reported to us as existing via
// msgsClassified.
if (this._indexingFolder.getProcessingFlags(msgHdr.messageKey) &
NOT_YET_REPORTED_PROCESSING_FLAGS)
continue;
// Because the gloda id could be in-flight, we need to double-check the
// enumerator here since it can't know about our in-memory stuff.
let [glodaId, glodaDirty] = PendingCommitTracker.getGlodaState(msgHdr);
// if the message seems valid and we are not forcing indexing, skip it.
// (that means good gloda id and not dirty)
if (!force &&
glodaId >= GLODA_FIRST_VALID_MESSAGE_ID &&
glodaDirty == this.kMessageClean)
continue;
if (logDebug)
this._log.debug(">>> calling _indexMessage");
yield aCallbackHandle.pushAndGo(
this._indexMessage(msgHdr, aCallbackHandle),
{what: "indexMessage", msgHdr: msgHdr});
GlodaIndexer._indexedMessageCount++;
if (logDebug)
this._log.debug("<<< back from _indexMessage");
}
}
// This will trigger an (async) db update which cannot hit the disk prior to
// the actual database records that constitute the clean state.
// XXX There is the slight possibility that, in the event of a crash, this
// will hit the disk but the gloda-id properties on the headers will not
// get set. This should ideally be resolved by detecting a non-clean
// shutdown and marking all folders as dirty.
glodaFolder._downgradeDirtyStatus(glodaFolder.kFolderClean);
// by definition, it's not likely we'll visit this folder again anytime soon
this._indexerLeaveFolder();
aJob.safelyInvokeCallback(true);
yield this.kWorkDone;
},
/**
* Invoked when a "message" job is scheduled so that we can clear
* _pendingAddJob if that is the job. We do this so that work items are not
* added to _pendingAddJob while it is being processed.
*/
_schedule_messageIndex: function(aJob, aCallbackHandle) {
// we do not want new work items to be added as we are processing, so
// clear _pendingAddJob. A new job will be created as needed.
if (aJob === this._pendingAddJob)
this._pendingAddJob = null;
// update our goal from the items length
aJob.goal = aJob.items.length;
},
/**
* If the job gets canceled, we need to make sure that we clear out pending
* add job or our state will get wonky.
*/
_canceled_messageIndex: function gloda_index_msg_canceled_messageIndex(aJob) {
if (aJob === this._pendingAddJob)
this._pendingAddJob = null;
},
/**
* Index a specific list of messages that we know to index from
* event-notification hints.
*/
_worker_messageIndex:
function* gloda_worker_messageIndex(aJob, aCallbackHandle) {
// if we are already in the correct folder, our "get in the folder" clause
// will not execute, so we need to make sure this value is accurate in
// that case. (and we want to avoid multiple checks...)
for (; aJob.offset < aJob.items.length; aJob.offset++) {
let item = aJob.items[aJob.offset];
// item is either [folder ID, message key] or
// [folder ID, message ID]
let glodaFolderId = item[0];
// If the folder has been deleted since we queued, skip this message
if (!GlodaDatastore._folderIdKnown(glodaFolderId))
continue;
let glodaFolder = GlodaDatastore._mapFolderID(glodaFolderId);
// Stay out of folders that:
// - are compacting / compacted and not yet processed
// - got deleted (this would be redundant if we had a stance on id nukage)
// (these things could have changed since we queued the event)
if (glodaFolder.compacting || glodaFolder.compacted ||
glodaFolder._deleted)
continue;
// get in the folder
if (this._indexingGlodaFolder != glodaFolder) {
yield this._indexerEnterFolder(glodaFolderId);
// Now that we have the real nsIMsgFolder, sanity-check that we should
// be indexing it. (There are some checks that require the
// nsIMsgFolder.)
if (!this.shouldIndexFolder(this._indexingFolder))
continue;
}
let msgHdr;
// GetMessageHeader can be affected by the use cache, so we need to check
// ContainsKey first to see if the header is really actually there.
if (typeof item[1] == "number")
msgHdr = this._indexingDatabase.ContainsKey(item[1]) &&
this._indexingFolder.GetMessageHeader(item[1]);
else
// same deal as in move processing.
// TODO fixme to not assume singular message-id's.
msgHdr = this._indexingDatabase.getMsgHdrForMessageID(item[1]);
if (msgHdr)
yield aCallbackHandle.pushAndGo(
this._indexMessage(msgHdr, aCallbackHandle),
{what: "indexMessage", msgHdr: msgHdr});
else
yield this.kWorkSync;
}
// There is no real reason to stay 'in' the folder. If we are going to get
// more events from the folder, its database would have to be open for us
// to get the events, so it's not like we're creating an efficiency
// problem where we unload a folder just to load it again in 2 seconds.
// (Well, at least assuming the views are good about holding onto the
// database references even though they go out of their way to avoid
// holding onto message header references.)
this._indexerLeaveFolder();
yield this.kWorkDone;
},
/**
* Recover from a "folder" or "message" job failing inside a call to
* |_indexMessage|, marking the message bad. If we were not in an
* |_indexMessage| call, then fail to recover.
*
* @param aJob The job that was being worked. We ignore this for now.
* @param aContextStack The callbackHandle mechanism's context stack. When we
* invoke pushAndGo for _indexMessage we put something in so we can
* detect when it is on the async stack.
* @param aException The exception that is necessitating we attempt to
* recover.
*
* @return 1 if we were able to recover (because we want the call stack
* popped down to our worker), false if we can't.
*/
_recover_indexMessage:
function gloda_index_recover_indexMessage(aJob, aContextStack,
aException) {
// See if indexMessage is on the stack...
if (aContextStack.length >= 2 &&
aContextStack[1] &&
("what" in aContextStack[1]) &&
aContextStack[1].what == "indexMessage") {
// it is, so this is probably recoverable.
this._log.debug(
"Exception while indexing message, marking it bad (gloda id of 1).");
// -- Mark the message as bad
let msgHdr = aContextStack[1].msgHdr;
// (In the worst case, the header is no longer valid, which will result in
// exceptions. We need to be prepared for that.)
try {
msgHdr.setUint32Property(GLODA_MESSAGE_ID_PROPERTY,
GLODA_BAD_MESSAGE_ID);
// clear the dirty bit if it has one
if (msgHdr.getUint32Property(GLODA_DIRTY_PROPERTY))
msgHdr.setUint32Property(GLODA_DIRTY_PROPERTY, 0);
}
catch (ex) {
// If we are indexing a folder and the message header is no longer
// valid, then it's quite likely the whole folder is no longer valid.
// But since in the event-driven message indexing case we could have
// other valid things to look at, let's try and recover. The folder
// indexing case will come back to us shortly and we will indicate
// recovery is not possible at that point.
// So do nothing here since by popping the indexing of the specific
// message out of existence we are recovering.
}
return 1;
}
return false;
},
/**
* Cleanup after an aborted "folder" or "message" job.
*/
_cleanup_indexing: function gloda_index_cleanup_indexing(aJob) {
this._indexerLeaveFolder();
aJob.safelyInvokeCallback(false);
},
/**
* Maximum number of deleted messages to process at a time. Arbitrary; there
* are no real known performance constraints at this point.
*/
DELETED_MESSAGE_BLOCK_SIZE: 32,
/**
* Process pending deletes...
*/
_worker_processDeletes: function* gloda_worker_processDeletes(aJob,
aCallbackHandle) {
// Count the number of messages we will eventually process. People freak
// out when the number is constantly increasing because they think gloda
// has gone rogue. (Note: new deletions can still accumulate during
// our execution, so we may 'expand' our count a little still.)
this._datastore.countDeletedMessages(aCallbackHandle.wrappedCallback);
aJob.goal = yield this.kWorkAsync;
this._log.debug("There are currently " + aJob.goal + " messages awaiting" +
" deletion processing.");
// get a block of messages to delete.
let query = Gloda.newQuery(Gloda.NOUN_MESSAGE, {
noDbQueryValidityConstraints: true,
});
query._deleted(1);
query.limit(this.DELETED_MESSAGE_BLOCK_SIZE);
let deletedCollection = query.getCollection(aCallbackHandle);
yield this.kWorkAsync;
while (deletedCollection.items.length) {
for (let message of deletedCollection.items) {
// If it turns out our count is wrong (because some new deletions
// happened since we entered this worker), let's issue a new count
// and use that to accurately update our goal.
if (aJob.offset >= aJob.goal) {
this._datastore.countDeletedMessages(aCallbackHandle.wrappedCallback);
aJob.goal += yield this.kWorkAsync;
}
yield aCallbackHandle.pushAndGo(this._deleteMessage(message,
aCallbackHandle));
aJob.offset++;
yield this.kWorkSync;
}
deletedCollection = query.getCollection(aCallbackHandle);
yield this.kWorkAsync;
}
this.pendingDeletions = false;
yield this.kWorkDone;
},
_worker_fixMissingContacts: function*(aJob, aCallbackHandle) {
let identityContactInfos = [], fixedContacts = {};
// -- asynchronously get a list of all identities without contacts
// The upper bound on the number of messed up contacts is the number of
// contacts in the user's address book. This should be small enough
// (and the data size small enough) that this won't explode thunderbird.
let queryStmt = GlodaDatastore._createAsyncStatement(
"SELECT identities.id, identities.contactID, identities.value " +
"FROM identities " +
"LEFT JOIN contacts ON identities.contactID = contacts.id " +
"WHERE identities.kind = 'email' AND contacts.id IS NULL",
true);
queryStmt.executeAsync({
handleResult: function(aResultSet) {
let row;
while ((row = aResultSet.getNextRow())) {
identityContactInfos.push({
identityId: row.getInt64(0),
contactId: row.getInt64(1),
email: row.getString(2)
});
}
},
handleError: function(aError) {
},
handleCompletion: function(aReason) {
GlodaDatastore._asyncCompleted();
aCallbackHandle.wrappedCallback();
},
});
queryStmt.finalize();
GlodaDatastore._pendingAsyncStatements++;
yield this.kWorkAsync;
// -- perform fixes only if there were missing contacts
if (identityContactInfos.length) {
const yieldEvery = 64;
// - create the missing contacts
for (let i = 0; i < identityContactInfos.length; i++) {
if ((i % yieldEvery) === 0)
yield this.kWorkSync;
let info = identityContactInfos[i],
card = GlodaUtils.getCardForEmail(info.email),
contact = new GlodaContact(
GlodaDatastore, info.contactId,
null, null,
card ? (card.displayName || info.email) : info.email,
0, 0);
GlodaDatastore.insertContact(contact);
// update the in-memory rep of the identity to know about the contact
// if there is one.
let identity = GlodaCollectionManager.cacheLookupOne(
Gloda.NOUN_IDENTITY, info.identityId, false);
if (identity) {
// Unfortunately, although this fixes the (reachable) Identity and
// exposes the Contact, it does not make the Contact reachable from
// the collection manager. This will make explicit queries that look
// up the contact potentially see the case where
// contact.identities[0].contact !== contact. Alternately, that
// may not happen and instead the "contact" object we created above
// may become unlinked. (I'd have to trace some logic I don't feel
// like tracing.) Either way, The potential fallout is minimal
// since the object identity invariant will just lapse and popularity
// on the contact may become stale, and neither of those meaningfully
// affect the operation of anything in Thunderbird.
// If we really cared, we could find all the dominant collections
// that reference the identity and update their corresponding
// contact collection to make it reachable. That use-case does not
// exist outside of here, which is why we're punting.
identity._contact = contact;
contact._identities = [identity];
}
// NOTE: If the addressbook indexer did anything useful other than
// adapting to name changes, we could schedule indexing of the cards at
// this time. However, as of this writing, it doesn't, and this task
// is a one-off relevant only to the time of this writing.
}
// - mark all folders as dirty, initiate indexing sweep
this.dirtyAllKnownFolders();
this.indexingSweepNeeded = true;
}
// -- mark the schema upgrade, be done
GlodaDatastore._updateSchemaVersion(GlodaDatastore._schemaVersion);
yield this.kWorkDone;
},
/**
* Determine whether a folder is suitable for indexing.
*
* @param aMsgFolder An nsIMsgFolder you want to see if we should index.
*
* @returns true if we want to index messages in this type of folder, false if
* we do not.
*/
shouldIndexFolder: function(aMsgFolder) {
let folderFlags = aMsgFolder.flags;
// Completely ignore non-mail and virtual folders. They should never even
// get to be GlodaFolder instances.
if (!(folderFlags & Ci.nsMsgFolderFlags.Mail) ||
(folderFlags & Ci.nsMsgFolderFlags.Virtual))
return false;
// Some folders do not really exist; we can detect this by getStringProperty
// exploding when we call it. This is primarily a concern because
// _mapFolder calls said exploding method, but we also don't want to
// even think about indexing folders that don't exist. (Such folders are
// likely the result of a messed up profile.)
try {
// flags is used because it should always be in the cache avoiding a miss
// which would compel an msf open.
aMsgFolder.getStringProperty("flags");
} catch (ex) {
return false;
}
// Now see what our gloda folder information has to say about the folder.
let glodaFolder = GlodaDatastore._mapFolder(aMsgFolder);
return glodaFolder.indexingPriority != glodaFolder.kIndexingNeverPriority;
},
/**
* Sets the indexing priority for this folder and persists it both to Gloda,
* and, for backup purposes, to the nsIMsgFolder via string property as well.
*
* Setting this priority may cause the indexer to either reindex this folder,
* or remove this folder from the existing index.
*
* @param {nsIMsgFolder} aFolder
* @param {Number} aPriority (one of the priority constants from GlodaFolder)
*/
setFolderIndexingPriority: function glodaSetFolderIndexingPriority(aFolder, aPriority) {
let glodaFolder = GlodaDatastore._mapFolder(aFolder);
// if there's been no change, we're done
if (aPriority == glodaFolder.indexingPriority) {
return;
}
// save off the old priority, and set the new one
let previousPrio = glodaFolder.indexingPriority;
glodaFolder._indexingPriority = aPriority;
// persist the new priority
GlodaDatastore.updateFolderIndexingPriority(glodaFolder);
aFolder.setStringProperty("indexingPriority", Number(aPriority).toString());
// if we've been told never to index this folder...
if (aPriority == glodaFolder.kIndexingNeverPriority) {
// stop doing so
if (this._indexingFolder == aFolder)
GlodaIndexer.killActiveJob();
// mark all existing messages as deleted
GlodaDatastore.markMessagesDeletedByFolderID(glodaFolder.id);
// re-index
GlodaMsgIndexer.indexingSweepNeeded = true;
} else if (previousPrio == glodaFolder.kIndexingNeverPriority) {
// there's no existing index, but the user now wants one
glodaFolder._dirtyStatus = glodaFolder.kFolderFilthy;
GlodaDatastore.updateFolderDirtyStatus(glodaFolder)
GlodaMsgIndexer.indexingSweepNeeded = true;
}
},
/**
* Resets the indexing priority on the given folder to whatever the default
* is for folders of that type.
*
* @note Calls setFolderIndexingPriority under the hood, so has identical
* potential reindexing side-effects
*
* @param {nsIMsgFolder} aFolder
* @param {boolean} aAllowSpecialFolderIndexing
*/
resetFolderIndexingPriority: function glodaResetFolderIndexingPriority(aFolder, aAllowSpecialFolderIndexing) {
this.setFolderIndexingPriority(aFolder,
GlodaDatastore.getDefaultIndexingPriority(aFolder,
aAllowSpecialFolderIndexing));
},
/**
* Queue all of the folders of all of the accounts of the current profile
* for indexing. We traverse all folders and queue them immediately to try
* and have an accurate estimate of the number of folders that need to be
* indexed. (We previously queued accounts rather than immediately
* walking their list of folders.)
*/
indexEverything: function glodaIndexEverything() {
this._log.info("Queueing all accounts for indexing.");
GlodaDatastore._beginTransaction();
for (let account in fixIterator(MailServices.accounts.accounts,
Ci.nsIMsgAccount)) {
this.indexAccount(account);
}
GlodaDatastore._commitTransaction();
},
/**
* Queue all of the folders belonging to an account for indexing.
*/
indexAccount: function glodaIndexAccount(aAccount) {
let rootFolder = aAccount.incomingServer.rootFolder;
if (rootFolder instanceof Ci.nsIMsgFolder) {
this._log.info("Queueing account folders for indexing: " + aAccount.key);
let allFolders = rootFolder.descendants;
let folderJobs = [];
for (let folder in fixIterator(allFolders, Ci.nsIMsgFolder)) {
if (this.shouldIndexFolder(folder))
GlodaIndexer.indexJob(
new IndexingJob("folder", GlodaDatastore._mapFolder(folder).id));
}
}
else {
this._log.info("Skipping Account, root folder not nsIMsgFolder");
}
},
/**
* Queue a single folder for indexing given an nsIMsgFolder.
*
* @param [aOptions.callback] A callback to invoke when the folder finishes
* indexing. First argument is true if the task ran to completion
* successfully, false if we had to abort for some reason.
* @param [aOptions.force=false] Should we force the indexing of all messages
* in the folder (true) or just index what hasn't been indexed (false).
* @return true if we are going to index the folder, false if not.
*/
indexFolder: function glodaIndexFolder(aMsgFolder, aOptions) {
if (!this.shouldIndexFolder(aMsgFolder))
return false;
let glodaFolder = GlodaDatastore._mapFolder(aMsgFolder);
// stay out of compacting/compacted folders
if (glodaFolder.compacting || glodaFolder.compacted)
return false;
this._log.info("Queue-ing folder for indexing: " +
aMsgFolder.prettiestName);
let job = new IndexingJob("folder", glodaFolder.id);
if (aOptions) {
if ("callback" in aOptions)
job.callback = aOptions.callback;
if ("force" in aOptions)
job.force = true;
}
GlodaIndexer.indexJob(job);
return true;
},
/**
* Queue a list of messages for indexing.
*
* @param aFoldersAndMessages List of [nsIMsgFolder, message key] tuples.
*/
indexMessages: function gloda_index_indexMessages(aFoldersAndMessages) {
let job = new IndexingJob("message", null);
job.items = aFoldersAndMessages.
map(fm => [GlodaDatastore._mapFolder(fm[0]).id, fm[1]]);
GlodaIndexer.indexJob(job);
},
/**
* Mark all known folders as dirty so that the next indexing sweep goes
* into all folders and checks their contents to see if they need to be
* indexed.
*
* This is being added for the migration case where we want to try and reindex
* all of the messages that had been marked with GLODA_BAD_MESSAGE_ID but
* which is now GLODA_OLD_BAD_MESSAGE_ID and so we should attempt to reindex
* them.
*/
dirtyAllKnownFolders: function gloda_index_msg_dirtyAllKnownFolders() {
// Just iterate over the datastore's folder map and tell each folder to
// be dirty if its priority is not disabled.
for (let folderID in GlodaDatastore._folderByID) {
let glodaFolder = GlodaDatastore._folderByID[folderID];
if (glodaFolder.indexingPriority !== glodaFolder.kIndexingNeverPriority)
glodaFolder._ensureFolderDirty();
}
},
/**
* Given a message header, return whether this message is likely to have
* been indexed or not.
*
* This means the message must:
* - Be in a folder eligible for gloda indexing. (Not News, etc.)
* - Be in a non-filthy folder.
* - Be gloda-indexed and non-filthy.
*
* @param aMsgHdr A message header.
* @returns true if the message is likely to have been indexed.
*/
isMessageIndexed: function gloda_index_isMessageIndexed(aMsgHdr) {
// If it's in a folder that we flat out do not index, say no.
if (!this.shouldIndexFolder(aMsgHdr.folder))
return false;
let glodaFolder = GlodaDatastore._mapFolder(aMsgHdr.folder);
let [glodaId, glodaDirty] = PendingCommitTracker.getGlodaState(aMsgHdr);
return glodaId >= GLODA_FIRST_VALID_MESSAGE_ID &&
glodaDirty != GlodaMsgIndexer.kMessageFilthy &&
glodaFolder &&
glodaFolder.dirtyStatus != glodaFolder.kFolderFilthy;
},
/* *********** Event Processing *********** */
/**
* Tracks messages we have received msgKeyChanged notifications for in order
* to provide batching and to suppress needless reindexing when we receive
* the expected follow-up msgsClassified notification.
*
* The entries in this dictionary should be extremely short-lived as we
* receive the msgKeyChanged notification as the offline fake header is
* converted into a real header (which is accompanied by a msgAdded
* notification we don't pay attention to). Once the headers finish
* updating, the message classifier will get its at-bat and should likely
* find that the messages have already been classified and so fast-path
* them.
*
* The keys in this dictionary are chosen to be consistent with those of
* PendingCommitTracker: the folder.URI + "#" + the (new) message key.
* The values in the dictionary are either an object with "id" (the gloda
* id), "key" (the new message key), and "dirty" (is it dirty and so
* should still be queued for indexing) attributes, or null indicating that
* no change in message key occurred and so no database changes are required.
*/
_keyChangedBatchInfo: {},
/**
* Common logic for things that want to feed event-driven indexing. This gets
* called by both |_msgFolderListener.msgsClassified| when we are first
* seeing a message as well as by |_folderListener| when things happen to
* existing messages. Although we could slightly specialize for the
* new-to-us case, it works out to be cleaner to just treat them the same
* and take a very small performance hit.
*
* @param aMsgHdrs Something fixIterator will work on to return an iterator
* on the set of messages that we should treat as potentially changed.
* @param aDirtyingEvent Is this event inherently dirtying? Receiving a
* msgsClassified notification is not inherently dirtying because it is
* just telling us that a message exists. We use this knowledge to
* ignore the msgsClassified notifications for messages we have received
* msgKeyChanged notifications for and fast-pathed. Since it is possible
* for user action to do something that dirties the message between the
* time we get the msgKeyChanged notification and when we receive the
* msgsClassified notification, we want to make sure we don't get
* confused. (Although since we remove the message from our ignore-set
* after the first notification, we would likely just mistakenly treat
* the msgsClassified notification as something dirtying, so it would
* still work out...)
*/
_reindexChangedMessages: function gloda_indexer_reindexChangedMessage(
aMsgHdrs, aDirtyingEvent) {
let glodaIdsNeedingDeletion = null;
let messageKeyChangedIds = null, messageKeyChangedNewKeys = null;
for (let msgHdr in fixIterator(aMsgHdrs, nsIMsgDBHdr)) {
// -- Index this folder?
let msgFolder = msgHdr.folder;
if (!this.shouldIndexFolder(msgFolder)) {
continue;
}
// -- Ignore messages in filthy folders!
// A filthy folder can only be processed by an indexing sweep, and at
// that point the message will get indexed.
let glodaFolder = GlodaDatastore._mapFolder(msgHdr.folder);
if (glodaFolder.dirtyStatus == glodaFolder.kFolderFilthy)
continue;
// -- msgKeyChanged event follow-up
if (!aDirtyingEvent) {
let keyChangedKey = msgHdr.folder.URI + "#" + msgHdr.messageKey;
if (keyChangedKey in this._keyChangedBatchInfo) {
var keyChangedInfo = this._keyChangedBatchInfo[keyChangedKey];
delete this._keyChangedBatchInfo[keyChangedKey];
// Null means to ignore this message because the key did not change
// (and the message was not dirty so it is safe to ignore.)
if (keyChangedInfo == null)
continue;
// (the key may be null if we only generated the entry because the
// message was dirty)
if (keyChangedInfo.key !== null) {
if (messageKeyChangedIds == null) {
messageKeyChangedIds = [];
messageKeyChangedNewKeys = [];
}
messageKeyChangedIds.push(keyChangedInfo.id);
messageKeyChangedNewKeys.push(keyChangedInfo.key);
}
// ignore the message because it was not dirty
if (!keyChangedInfo.isDirty)
continue;
}
}
// -- Index this message?
// We index local messages, IMAP messages that are offline, and IMAP
// messages that aren't offline but whose folders aren't offline either
let isFolderLocal = msgFolder instanceof nsIMsgLocalMailFolder;
if (!isFolderLocal) {
if (!(msgHdr.flags & nsMsgMessageFlags.Offline) &&
(msgFolder.flags & nsMsgFolderFlags.Offline)) {
continue;
}
}
// Ignore messages whose processing flags indicate it has not yet been
// classified. In the IMAP case if the Offline flag is going to get set
// we are going to see it before the msgsClassified event so this is
// very important.
if (msgFolder.getProcessingFlags(msgHdr.messageKey) &
NOT_YET_REPORTED_PROCESSING_FLAGS)
continue;
let [glodaId, glodaDirty] = PendingCommitTracker.getGlodaState(msgHdr);
let isSpam = msgHdr.getStringProperty(JUNK_SCORE_PROPERTY) ==
JUNK_SPAM_SCORE_STR;
// -- Is the message currently gloda indexed?
if (glodaId >= GLODA_FIRST_VALID_MESSAGE_ID &&
glodaDirty != this.kMessageFilthy) {
// - Is the message spam?
if (isSpam) {
// Treat this as a deletion...
if (!glodaIdsNeedingDeletion)
glodaIdsNeedingDeletion = [];
glodaIdsNeedingDeletion.push(glodaId);
// and skip to the next message
continue;
}
// - Mark the message dirty if it is clean.
// (This is the only case in which we need to mark dirty so that the
// indexing sweep takes care of things if we don't process this in
// an event-driven fashion. If the message has no gloda-id or does
// and it's already dirty or filthy, it is already marked for
// indexing.)
if (glodaDirty == this.kMessageClean)
msgHdr.setUint32Property(GLODA_DIRTY_PROPERTY, this.kMessageDirty);
// if the message is pending clean, this change invalidates that.
PendingCommitTracker.noteDirtyHeader(msgHdr);
}
// If it's not indexed but is spam, ignore it.
else if (isSpam) {
continue;
}
// (we want to index the message if we are here)
// mark the folder dirty too, so we know to look inside
glodaFolder._ensureFolderDirty();
if (this._pendingAddJob == null) {
this._pendingAddJob = new IndexingJob("message", null);
GlodaIndexer.indexJob(this._pendingAddJob);
}
// only queue the message if we haven't overflowed our event-driven budget
if (this._pendingAddJob.items.length <
this._indexMaxEventQueueMessages) {
this._pendingAddJob.items.push(
[GlodaDatastore._mapFolder(msgFolder).id, msgHdr.messageKey]);
}
else {
this.indexingSweepNeeded = true;
}
}
// Process any message key changes (from earlier msgKeyChanged events)
if (messageKeyChangedIds != null)
GlodaDatastore.updateMessageKeys(messageKeyChangedIds,
messageKeyChangedNewKeys);
// If we accumulated any deletions in there, batch them off now.
if (glodaIdsNeedingDeletion) {
GlodaDatastore.markMessagesDeletedByIDs(glodaIdsNeedingDeletion);
this.pendingDeletions = true;
}
},
/* ***** Folder Changes ***** */
/**
* All additions and removals are queued for processing. Indexing messages
* is potentially phenomenally expensive, and deletion can still be
* relatively expensive due to our need to delete the message, its
* attributes, and all attributes that reference it. Additionally,
* attribute deletion costs are higher than attribute look-up because
* there is the actual row plus its 3 indices, and our covering indices are
* no help there.
*
*/
_msgFolderListener: {
indexer: null,
/**
* We no longer use the msgAdded notification, instead opting to wait until
* junk/trait classification has run (or decided not to run) and all
* filters have run. The msgsClassified notification provides that for us.
*/
msgAdded: function gloda_indexer_msgAdded(aMsgHdr) {
// we are never called! we do not enable this bit!
},
/**
* Process (apparently newly added) messages that have been looked at by
* the message classifier. This ensures that if the message was going
* to get marked as spam, this will have already happened.
*
* Besides truly new (to us) messages, We will also receive this event for
* messages that are the result of IMAP message move/copy operations,
* including both moves that generated offline fake headers and those that
* did not. In the offline fake header case, however, we are able to
* ignore their msgsClassified events because we will have received a
* msgKeyChanged notification sometime in the recent past.
*/
msgsClassified: function gloda_indexer_msgsClassified(
aMsgHdrs, aJunkClassified, aTraitClassified) {
this.indexer._log.debug("msgsClassified notification");
try {
GlodaMsgIndexer._reindexChangedMessages(aMsgHdrs.enumerate(), false);
}
catch (ex) {
this.indexer._log.error("Explosion in msgsClassified handling:", ex);
}
},
/**
* Handle real, actual deletion (move to trash and IMAP deletion model
* don't count); we only see the deletion here when it becomes forever,
* or rather _just before_ it becomes forever. Because the header is
* going away, we need to either process things immediately or extract the
* information required to purge it later without the header.
* To this end, we mark all messages that were indexed in the gloda message
* database as deleted. We set our pending deletions flag to let our
* indexing logic know that after its next wave of folder traversal, it
* should perform a deletion pass. If it turns out the messages are coming
* back, the fact that deletion is thus deferred can be handy, as we can
* reuse the existing gloda message.
*/
msgsDeleted: function gloda_indexer_msgsDeleted(aMsgHdrs) {
this.indexer._log.debug("msgsDeleted notification");
let glodaMessageIds = [];
for (let iMsgHdr = 0; iMsgHdr < aMsgHdrs.length; iMsgHdr++) {
let msgHdr = aMsgHdrs.queryElementAt(iMsgHdr, nsIMsgDBHdr);
let [glodaId, glodaDirty] = PendingCommitTracker.getGlodaState(msgHdr);
if (glodaId >= GLODA_FIRST_VALID_MESSAGE_ID &&
glodaDirty != GlodaMsgIndexer.kMessageFilthy)
glodaMessageIds.push(glodaId);
}
if (glodaMessageIds.length) {
GlodaMsgIndexer._datastore.markMessagesDeletedByIDs(glodaMessageIds);
GlodaMsgIndexer.pendingDeletions = true;
}
},
/**
* Process a move or copy.
*
* Moves to a local folder or an IMAP folder where we are generating offline
* fake headers are dealt with efficiently because we get both the source
* and destination headers. The main ingredient to having offline fake
* headers is that allowUndo was true when the operation was performance.
* The only non-obvious thing is that we need to make sure that we deal
* with the impact of filthy folders and messages on gloda-id's (they
* invalidate the gloda-id).
*
* Moves to an IMAP folder that do not generate offline fake headers do not
* provide us with the target header, but the IMAP SetPendingAttributes
* logic will still attempt to propagate the properties on the message
* header so when we eventually see it in the msgsClassified notification,
* it should have the properties of the source message copied over.
* We make sure that gloda-id's do not get propagated when messages are
* moved from IMAP folders that are marked filthy or are marked as not
* supposed to be indexed by clearing the pending attributes for the header
* being tracked by the destination IMAP folder.
* We could fast-path the IMAP move case in msgsClassified by noticing that
* a message is showing up with a gloda-id header already and just
* performing an async location update.
*
* Moves that occur involving 'compacted' folders are fine and do not
* require special handling here. The one tricky super-edge-case that
* can happen (and gets handled by the compaction pass) is the move of a
* message that got gloda indexed that did not already have a gloda-id and
* PendingCommitTracker did not get to flush the gloda-id before the
* compaction happened. In that case our move logic cannot know to do
* anything and the gloda database still thinks the message lives in our
* folder. The compaction pass will deal with this by marking the message
* as deleted. The rationale being that marking it deleted allows the
* message to be re-used if it gets indexed in the target location, or if
* the target location has already been indexed, we no longer need the
* duplicate and it should be deleted. (Also, it is unable to distinguish
* between a case where the message got deleted versus moved.)
*
* Because copied messages are, by their nature, duplicate messages, we
* do not particularly care about them. As such, we defer their processing
* to the automatic sync logic that will happen much later on. This is
* potentially desirable in case the user deletes some of the original
* messages, allowing us to reuse the gloda message representations when
* we finally get around to indexing the messages. We do need to mark the
* folder as dirty, though, to clue in the sync logic.
*/
msgsMoveCopyCompleted: function gloda_indexer_msgsMoveCopyCompleted(aMove,
aSrcMsgHdrs, aDestFolder, aDestMsgHdrs) {
this.indexer._log.debug("MoveCopy notification. Move: " + aMove);
try {
// ---- Move
if (aMove) {
// -- Effectively a deletion?
// If the destination folder is not indexed, it's like these messages
// are being deleted.
if (!GlodaMsgIndexer.shouldIndexFolder(aDestFolder)) {
this.msgsDeleted(aSrcMsgHdrs);
return;
}
// -- Avoid propagation of filthy gloda-id's.
// If the source folder is filthy or should not be indexed (and so
// any gloda-id's found in there are gibberish), our only job is to
// strip the gloda-id's off of all the destination headers because
// none of the gloda-id's are valid (and so we certainly don't want
// to try and use them as a basis for updating message keys.)
let srcMsgFolder = aSrcMsgHdrs.queryElementAt(0, nsIMsgDBHdr).folder;
if (!this.indexer.shouldIndexFolder(srcMsgFolder) ||
(GlodaDatastore._mapFolder(srcMsgFolder).dirtyStatus ==
GlodaFolder.prototype.kFolderFilthy)) {
// Local case, just modify the destination headers directly.
if (aDestMsgHdrs) {
for (let destMsgHdr in fixIterator(aDestMsgHdrs, nsIMsgDBHdr)) {
// zero it out if it exists
// (no need to deal with pending commit issues here; a filthy
// folder by definition has nothing indexed in it.)
let glodaId = destMsgHdr.getUint32Property(
GLODA_MESSAGE_ID_PROPERTY);
if (glodaId)
destMsgHdr.setUint32Property(GLODA_MESSAGE_ID_PROPERTY,
0);
}
// Since we are moving messages from a folder where they were
// effectively not indexed, it is up to us to make sure the
// messages now get indexed.
this.indexer._reindexChangedMessages(aDestMsgHdrs.enumerate());
return;
}
// IMAP move case, we need to operate on the pending headers using
// the source header to get the pending header and as the
// indication of what has been already set on the pending header.
else {
let destDb;
// so, this can fail, and there's not much we can do about it.
try {
destDb = aDestFolder.msgDatabase;
} catch (ex) {
this.indexer._log.warn("Destination database for " +
aDestFolder.prettiestName +
" not ready on IMAP move." +
" Gloda corruption possible.");
return;
}
for (let srcMsgHdr in fixIterator(aSrcMsgHdrs, nsIMsgDBHdr)) {
// zero it out if it exists
// (no need to deal with pending commit issues here; a filthy
// folder by definition has nothing indexed in it.)
let glodaId = srcMsgHdr.getUint32Property(
GLODA_MESSAGE_ID_PROPERTY);
if (glodaId)
destDb.setUint32AttributeOnPendingHdr(
srcMsgHdr, GLODA_MESSAGE_ID_PROPERTY, 0);
}
// Nothing remains to be done. The msgClassified event will take
// care of making sure the message gets indexed.
return;
}
}
// --- Have destination headers (local case):
if (aDestMsgHdrs) {
// -- Update message keys for valid gloda-id's.
// (Which means ignore filthy gloda-id's.)
let glodaIds = [];
let newMessageKeys = [];
aSrcMsgHdrs.QueryInterface(nsIArray);
aDestMsgHdrs.QueryInterface(nsIArray);
// Track whether we see any messages that are not gloda indexed so
// we know if we have to mark the destination folder dirty.
let sawNonGlodaMessage = false;
for (let iMsg = 0; iMsg < aSrcMsgHdrs.length; iMsg++) {
let srcMsgHdr = aSrcMsgHdrs.queryElementAt(iMsg, nsIMsgDBHdr);
let destMsgHdr = aDestMsgHdrs.queryElementAt(iMsg, nsIMsgDBHdr);
let [glodaId, dirtyStatus] =
PendingCommitTracker.getGlodaState(srcMsgHdr);
if (glodaId >= GLODA_FIRST_VALID_MESSAGE_ID &&
dirtyStatus != GlodaMsgIndexer.kMessageFilthy) {
// we may need to update the pending commit map (it checks)
PendingCommitTracker.noteMove(srcMsgHdr, destMsgHdr);
// but we always need to update our database
glodaIds.push(glodaId);
newMessageKeys.push(destMsgHdr.messageKey);
}
else {
sawNonGlodaMessage = true;
}
}
// this method takes care to update the in-memory representations
// too; we don't need to do anything
if (glodaIds.length)
GlodaDatastore.updateMessageLocations(glodaIds, newMessageKeys,
aDestFolder);
// Mark the destination folder dirty if we saw any messages that
// were not already gloda indexed.
if (sawNonGlodaMessage) {
let destGlodaFolder = GlodaDatastore._mapFolder(aDestFolder);
destGlodaFolder._ensureFolderDirty();
this.indexer.indexingSweepNeeded = true;
}
}
// --- No dest headers (IMAP case):
// Update any valid gloda indexed messages into their new folder to
// make the indexer's life easier when it sees the messages in their
// new folder.
else {
let glodaIds = [];
let srcFolderIsLocal =
(srcMsgFolder instanceof nsIMsgLocalMailFolder);
for (let iMsgHdr = 0; iMsgHdr < aSrcMsgHdrs.length; iMsgHdr++) {
let msgHdr = aSrcMsgHdrs.queryElementAt(iMsgHdr, nsIMsgDBHdr);
let [glodaId, dirtyStatus] =
PendingCommitTracker.getGlodaState(msgHdr);
if (glodaId >= GLODA_FIRST_VALID_MESSAGE_ID &&
dirtyStatus != GlodaMsgIndexer.kMessageFilthy) {
// we may need to update the pending commit map (it checks)
PendingCommitTracker.noteBlindMove(msgHdr);
// but we always need to update our database
glodaIds.push(glodaId);
// XXX UNDO WORKAROUND
// This constitutes a move from a local folder to an IMAP
// folder. Undo does not currently do the right thing for us,
// but we have a chance of not orphaning the message if we
// mark the source header as dirty so that when the message
// gets re-added we see it. (This does require that we enter
// the folder; we set the folder dirty after the loop to
// increase the probability of this but it's not foolproof
// depending on when the next indexing sweep happens and when
// the user performs an undo.)
msgHdr.setUint32Property(GLODA_DIRTY_PROPERTY,
GlodaMsgIndexer.kMessageDirty);
}
}
// XXX ALSO UNDO WORKAROUND
if (srcFolderIsLocal) {
let srcGlodaFolder = GlodaDatastore._mapFolder(srcMsgFolder);
srcGlodaFolder._ensureFolderDirty();
}
// quickly move them to the right folder, zeroing their message keys
GlodaDatastore.updateMessageFoldersByKeyPurging(glodaIds,
aDestFolder);
// we _do not_ need to mark the folder as dirty, because the
// message added events will cause that to happen.
}
}
// ---- Copy case
else {
// -- Do not propagate gloda-id's for copies
// (Only applies if we have the destination header, which means local)
if (aDestMsgHdrs) {
for (let destMsgHdr in fixIterator(aDestMsgHdrs, nsIMsgDBHdr)) {
let glodaId = destMsgHdr.getUint32Property(
GLODA_MESSAGE_ID_PROPERTY);
if (glodaId)
destMsgHdr.setUint32Property(GLODA_MESSAGE_ID_PROPERTY, 0);
}
}
// mark the folder as dirty; we'll get to it later.
let destGlodaFolder = GlodaDatastore._mapFolder(aDestFolder);
destGlodaFolder._ensureFolderDirty();
this.indexer.indexingSweepNeeded = true;
}
} catch (ex) {
this.indexer._log.error("Problem encountered during message move/copy:",
ex.stack);
}
},
/**
* Queue up message key changes that are a result of offline fake headers
* being made real for the actual update during the msgsClassified
* notification that is expected after this. We defer the
* actual work (if there is any to be done; the fake header might have
* guessed the right UID correctly) so that we can batch our work.
*
* The expectation is that there will be no meaningful time window between
* this notification and the msgsClassified notification since the message
* classifier should not actually need to classify the messages (they
* should already have been classified) and so can fast-path them.
*/
msgKeyChanged: function gloda_indexer_msgKeyChangeded(aOldMsgKey,
aNewMsgHdr) {
try {
let val = null, newKey = aNewMsgHdr.messageKey;
let [glodaId, glodaDirty] =
PendingCommitTracker.getGlodaState(aNewMsgHdr);
// If we haven't indexed this message yet, take no action, and leave it
// up to msgsClassified to take proper action.
if (glodaId < GLODA_FIRST_VALID_MESSAGE_ID)
return;
// take no action on filthy messages,
// generate an entry if dirty or the keys don't match.
if ((glodaDirty !== GlodaMsgIndexer.kMessageFilthy) &&
((glodaDirty === GlodaMsgIndexer.kMessageDirty) ||
(aOldMsgKey !== newKey))) {
val = {
id: glodaId,
key: (aOldMsgKey !== newKey) ? newKey : null,
isDirty: glodaDirty === GlodaMsgIndexer.kMessageDirty,
};
}
let key = aNewMsgHdr.folder.URI + "#" + aNewMsgHdr.messageKey;
this.indexer._keyChangedBatchInfo[key] = val;
}
// this is more for the unit test to fail rather than user error reporting
catch (ex) {
this.indexer._log.error("Problem encountered during msgKeyChanged" +
" notification handling: " + ex + "\n\n" +
ex.stack + " \n\n");
}
},
/**
* Detect newly added folders before they get messages so we map them before
* they get any messages added to them. If we only hear about them after
* they get their 1st message, then we will mark them filthy, but if we mark
* them before that, they get marked clean.
*/
folderAdded: function gloda_indexer_folderAdded(aMsgFolder) {
// This is invoked for its side-effect of invoking _mapFolder and doing so
// only after filtering out folders we don't care about.
GlodaMsgIndexer.shouldIndexFolder(aMsgFolder);
},
/**
* Handles folder no-longer-exists-ence. We mark all messages as deleted
* and remove the folder from our URI table. Currently, if a folder that
* contains other folders is deleted, we may either receive one
* notification for the folder that is deleted, or a notification for the
* folder and one for each of its descendents. This depends upon the
* underlying account implementation, so we explicitly handle each case.
* Namely, we treat it as if we're only planning on getting one, but we
* handle if the children are already gone for some reason.
*/
folderDeleted: function gloda_indexer_folderDeleted(aFolder) {
this.indexer._log.debug("folderDeleted notification");
try {
let delFunc = function(aFolder, indexer) {
if (indexer._datastore._folderKnown(aFolder)) {
indexer._log.info("Processing deletion of folder " +
aFolder.prettiestName + ".");
let glodaFolder = GlodaDatastore._mapFolder(aFolder);
indexer._datastore.markMessagesDeletedByFolderID(glodaFolder.id);
indexer._datastore.deleteFolderByID(glodaFolder.id);
GlodaDatastore._killGlodaFolderIntoTombstone(glodaFolder);
}
else {
indexer._log.info("Ignoring deletion of folder " +
aFolder.prettiestName +
" because it is unknown to gloda.");
}
};
let descendentFolders = aFolder.descendants;
// (the order of operations does not matter; child, non-child, whatever.)
// delete the parent
delFunc(aFolder, this.indexer);
// delete all its descendents
for (let folder in fixIterator(descendentFolders, Ci.nsIMsgFolder)) {
delFunc(folder, this.indexer);
}
this.indexer.pendingDeletions = true;
} catch (ex) {
this.indexer._log.error("Problem encountered during folder deletion" +
": " + ex + "\n\n" + ex.stack + "\n\n");
}
},
/**
* Handle a folder being copied or moved.
* Moves are handled by a helper function shared with _folderRenameHelper
* (which takes care of any nesting involved).
* Copies are actually ignored, because our periodic indexing traversal
* should discover these automatically. We could hint ourselves into
* action, but arguably a set of completely duplicate messages is not
* a high priority for indexing.
*/
folderMoveCopyCompleted: function gloda_indexer_folderMoveCopyCompleted(
aMove, aSrcFolder, aDestFolder) {
this.indexer._log.debug("folderMoveCopy notification (Move: " + aMove
+ ")");
if (aMove) {
let srcURI = aSrcFolder.URI;
let targetURI = aDestFolder.URI +
srcURI.substring(srcURI.lastIndexOf("/"));
this._folderRenameHelper(aSrcFolder, targetURI);
}
else {
this.indexer.indexingSweepNeeded = true;
}
},
/**
* We just need to update the URI <-> ID maps and the row in the database,
* all of which is actually done by the datastore for us.
* This method needs to deal with the complexity where local folders will
* generate a rename notification for each sub-folder, but IMAP folders
* will generate only a single notification. Our logic primarily handles
* this by not exploding if the original folder no longer exists.
*/
_folderRenameHelper: function gloda_indexer_folderRenameHelper(aOrigFolder,
aNewURI) {
let newFolder = MailUtils.getFolderForURI(aNewURI);
let specialFolderFlags = Ci.nsMsgFolderFlags.Trash | Ci.nsMsgFolderFlags.Junk;
if (newFolder.isSpecialFolder(specialFolderFlags, true)) {
let descendentFolders = newFolder.descendants;
// First thing to do: make sure we don't index the resulting folder and
// its descendents.
GlodaMsgIndexer.resetFolderIndexingPriority(newFolder);
for (let folder in fixIterator(descendentFolders, Ci.nsIMsgFolder)) {
GlodaMsgIndexer.resetFolderIndexingPriority(folder);
}
// Remove from the index messages from the original folder
this.folderDeleted(aOrigFolder);
} else {
let descendentFolders = aOrigFolder.descendants;
let origURI = aOrigFolder.URI;
// this rename is straightforward.
GlodaDatastore.renameFolder(aOrigFolder, aNewURI);
for (let folder in fixIterator(descendentFolders, Ci.nsIMsgFolder)) {
let oldSubURI = folder.URI;
// mangle a new URI from the old URI. we could also try and do a
// parallel traversal of the new folder hierarchy, but that seems like
// more work.
let newSubURI = aNewURI + oldSubURI.substring(origURI.length);
this.indexer._datastore.renameFolder(oldSubURI, newSubURI);
}
this.indexer._log.debug("folder renamed: " + origURI + " to " + aNewURI);
}
},
/**
* Handle folder renames, dispatching to our rename helper (which also
* takes care of any nested folder issues.)
*/
folderRenamed: function gloda_indexer_folderRenamed(aOrigFolder,
aNewFolder) {
this._folderRenameHelper(aOrigFolder, aNewFolder.URI);
},
/**
* This tells us about many exciting things. What they are and what we do:
*
* - FolderCompactStart: Mark the folder as compacting in our in-memory
* representation. This should keep any new indexing out of the folder
* until it is done compacting. Also, kill any active or existing jobs
* to index the folder.
* - FolderCompactFinish: Mark the folder as done compacting in our
* in-memory representation. Assuming the folder was known to us and
* not marked filthy, queue a compaction job.
*
* - FolderReindexTriggered: We do the same thing as FolderCompactStart
* but don't mark the folder as compacting.
*
* - JunkStatusChanged: We mark the messages that have had their junk
* state change to be reindexed.
*/
itemEvent: function gloda_indexer_itemEvent(aItem, aEvent, aData) {
// Compact and Reindex are close enough that we can reuse the same code
// with one minor difference.
if (aEvent == "FolderCompactStart" ||
aEvent == "FolderReindexTriggered") {
let aMsgFolder = aItem.QueryInterface(nsIMsgFolder);
// ignore folders we ignore...
if (!GlodaMsgIndexer.shouldIndexFolder(aMsgFolder))
return;
let glodaFolder = GlodaDatastore._mapFolder(aMsgFolder);
if (aEvent == "FolderCompactStart")
glodaFolder.compacting = true;
// Purge any explicit indexing of said folder.
GlodaIndexer.purgeJobsUsingFilter(function (aJob) {
return (aJob.jobType == "folder" &&
aJob.id == aMsgFolder.id);
});
// Abort the active job if it's in the folder (this covers both
// event-driven indexing that happens to be in the folder as well
// explicit folder indexing of the folder).
if (GlodaMsgIndexer._indexingFolder == aMsgFolder)
GlodaIndexer.killActiveJob();
// Tell the PendingCommitTracker to throw away anything it is tracking
// about the folder. We will pick up the pieces in the compaction
// pass.
PendingCommitTracker.noteFolderDatabaseGettingBlownAway(aMsgFolder);
// (We do not need to mark the folder dirty because if we were indexing
// it, it already must have been marked dirty.)
}
else if (aEvent == "FolderCompactFinish") {
let aMsgFolder = aItem.QueryInterface(nsIMsgFolder);
// ignore folders we ignore...
if (!GlodaMsgIndexer.shouldIndexFolder(aMsgFolder))
return;
let glodaFolder = GlodaDatastore._mapFolder(aMsgFolder);
glodaFolder.compacting = false;
glodaFolder._setCompactedState(true);
// Queue compaction unless the folder was filthy (in which case there
// are no valid gloda-id's to update.)
if (glodaFolder.dirtyStatus != glodaFolder.kFolderFilthy)
GlodaIndexer.indexJob(
new IndexingJob("folderCompact", glodaFolder.id));
// Queue indexing of the folder if it is dirty. We are doing this
// mainly in case we were indexing it before the compaction started.
// It should be reasonably harmless if we weren't.
// (It would probably be better to just make sure that there is an
// indexing sweep queued or active, and if it's already active that
// this folder is in the queue to be processed.)
if (glodaFolder.dirtyStatus == glodaFolder.kFolderDirty)
GlodaIndexer.indexJob(new IndexingJob("folder", glodaFolder.id));
}
else if (aEvent == "JunkStatusChanged") {
this.indexer._log.debug("JunkStatusChanged notification");
aItem.QueryInterface(Ci.nsIArray);
GlodaMsgIndexer._reindexChangedMessages(aItem.enumerate(), true);
}
},
},
/**
* A nsIFolderListener (listening on nsIMsgMailSession so we get all of
* these events) PRIMARILY to get folder loaded notifications. Because of
* deficiencies in the nsIMsgFolderListener's events at this time, we also
* get our folder-added and newsgroup notifications from here for now. (This
* will be rectified.)
*/
_folderListener: {
indexer: null,
_init: function gloda_indexer_fl_init(aIndexer) {
this.indexer = aIndexer;
},
// We explicitly know about these things rather than bothering with some
// form of registration scheme because these aren't going to change much.
get _kFolderLoadedAtom() {
delete this._kFolderLoadedAtom;
return this._kFolderLoadedAtom = atomService.getAtom("FolderLoaded");
},
get _kKeywordsAtom() {
delete this._kKeywordsAtom;
return this._kKeywordsAtom = atomService.getAtom("Keywords");
},
get _kStatusAtom() {
delete this._kStatusAtom;
return this._kStatusAtom = atomService.getAtom("Status");
},
get _kFlaggedAtom() {
delete this._kFlaggedAtom;
return this._kFlaggedAtom = atomService.getAtom("Flagged");
},
get _kFolderFlagAtom() {
delete this._kFolderFlagAtom;
return this._kFolderFlagAtom = atomService.getAtom("FolderFlag");
},
OnItemAdded: function gloda_indexer_OnItemAdded(aParentItem, aItem) {
},
OnItemRemoved: function gloda_indexer_OnItemRemoved(aParentItem, aItem) {
},
OnItemPropertyChanged: function gloda_indexer_OnItemPropertyChanged(
aItem, aProperty, aOldValue, aNewValue) {
},
/**
* Detect changes to folder flags and reset our indexing priority. This
* is important because (all?) folders start out without any flags and
* then get their flags added to them.
*/
OnItemIntPropertyChanged: function gloda_indexer_OnItemIntPropertyChanged(
aFolderItem, aProperty, aOldValue, aNewValue) {
if (aProperty !== this._kFolderFlagAtom)
return;
if (!GlodaMsgIndexer.shouldIndexFolder(aFolderItem))
return;
// Only reset priority if folder Special Use changes.
if ((aOldValue & Ci.nsMsgFolderFlags.SpecialUse) ==
(aNewValue & Ci.nsMsgFolderFlags.SpecialUse))
return;
GlodaMsgIndexer.resetFolderIndexingPriority(aFolderItem);
},
OnItemBoolPropertyChanged: function gloda_indexer_OnItemBoolPropertyChanged(
aItem, aProperty, aOldValue, aNewValue) {
},
OnItemUnicharPropertyChanged:
function gloda_indexer_OnItemUnicharPropertyChanged(
aItem, aProperty, aOldValue, aNewValue) {
},
/**
* Notice when user activity adds/removes tags or changes a message's
* status.
*/
OnItemPropertyFlagChanged: function gloda_indexer_OnItemPropertyFlagChanged(
aMsgHdr, aProperty, aOldValue, aNewValue) {
if (aProperty == this._kKeywordsAtom ||
// We could care less about the new flag changing.
(aProperty == this._kStatusAtom &&
(aOldValue ^ aNewValue) != nsMsgMessageFlags.New &&
// We do care about IMAP deletion, but msgsDeleted tells us that, so
// ignore IMAPDeleted too...
(aOldValue ^ aNewValue) != nsMsgMessageFlags.IMAPDeleted) ||
aProperty == this._kFlaggedAtom) {
GlodaMsgIndexer._reindexChangedMessages([aMsgHdr], true);
}
},
/**
* Get folder loaded notifications for folders that had to do some
* (asynchronous) processing before they could be opened.
*/
OnItemEvent: function gloda_indexer_OnItemEvent(aFolder, aEvent) {
if (aEvent == this._kFolderLoadedAtom)
this.indexer._onFolderLoaded(aFolder);
},
},
/* ***** Rebuilding / Reindexing ***** */
/**
* Allow us to invalidate an outstanding folder traversal because the
* underlying database is going away. We use other means for detecting
* modifications of the message (labeling, marked (un)read, starred, etc.)
*
* This is an nsIDBChangeListener listening to an nsIDBChangeAnnouncer. To
* add ourselves, we get us a nice nsMsgDatabase, query it to the announcer,
* then call AddListener.
*/
_databaseAnnouncerListener: {
indexer: null,
/**
* XXX We really should define the operations under which we expect this to
* occur. While we know this must be happening as the result of a
* ForceClosed call, we don't have a comprehensive list of when this is
* expected to occur. Some reasons:
* - Compaction (although we should already have killed the job thanks to
* our compaction notification)
* - UID validity rolls.
* - Folder Rename
* - Folder Delete
* The fact that we already have the database open when getting this means
* that it had to be valid before we opened it, which hopefully rules out
* modification of the mbox file by an external process (since that is
* forbidden when we are running) and many other exotic things.
*
* So this really ends up just being a correctness / safety protection
* mechanism. At least now that we have better compaction support.
*/
onAnnouncerGoingAway: function gloda_indexer_dbGoingAway(
aDBChangeAnnouncer) {
// The fact that we are getting called means we have an active folder and
// that we therefore are the active job. As such, we must kill the
// active job.
// XXX In the future, when we support interleaved event-driven indexing
// that bumps long-running indexing tasks, the semantics of this will
// have to change a bit since we will want to maintain being active in a
// folder even when bumped. However, we will probably have a more
// complex notion of indexing contexts on a per-job basis.
GlodaIndexer.killActiveJob();
},
onHdrFlagsChanged: function(aHdrChanged, aOldFlags, aNewFlags, aInstigator) {},
onHdrDeleted: function(aHdrChanged, aParentKey, aFlags, aInstigator) {},
onHdrAdded: function(aHdrChanged, aParentKey, aFlags, aInstigator) {},
onParentChanged: function(aKeyChanged, aOldParent, aNewParent,
aInstigator) {},
onReadChanged: function(aInstigator) {},
onJunkScoreChanged: function(aInstigator) {},
onHdrPropertyChanged: function (aHdrToChange, aPreChange, aStatus,
aInstigator) {},
onEvent: function (aDB, aEvent) {},
},
/**
* Given a list of Message-ID's, return a matching list of lists of messages
* matching those Message-ID's. So if you pass an array with three
* Message-ID's ["a", "b", "c"], you would get back an array containing
* 3 lists, where the first list contains all the messages with a message-id
* of "a", and so forth. The reason a list is returned rather than null/a
* message is that we accept the reality that we have multiple copies of
* messages with the same ID.
* This call is asynchronous because it depends on previously created messages
* to be reflected in our results, which requires us to execute on the async
* thread where all our writes happen. This also turns out to be a
* reasonable thing because we could imagine pathological cases where there
* could be a lot of message-id's and/or a lot of messages with those
* message-id's.
*
* The returned collection will include both 'ghost' messages (messages
* that exist for conversation-threading purposes only) as well as deleted
* messages in addition to the normal 'live' messages that non-privileged
* queries might return.
*/
getMessagesByMessageID: function gloda_ns_getMessagesByMessageID(aMessageIDs,
aCallback, aCallbackThis) {
let msgIDToIndex = {};
let results = [];
for (let iID = 0; iID < aMessageIDs.length; ++iID) {
let msgID = aMessageIDs[iID];
results.push([]);
msgIDToIndex[msgID] = iID;
}
// (Note: although we are performing a lookup with no validity constraints
// and using the same object-relational-mapper-ish layer used by things
// that do have constraints, we are not at risk of exposing deleted
// messages to other code and getting it confused. The only way code
// can find a message is if it shows up in their queries or gets announced
// via GlodaCollectionManager.itemsAdded, neither of which will happen.)
let query = Gloda.newQuery(Gloda.NOUN_MESSAGE, {
noDbQueryValidityConstraints: true,
});
query.headerMessageID.apply(query, aMessageIDs);
query.frozen = true;
let listener = new MessagesByMessageIdCallback(msgIDToIndex, results,
aCallback, aCallbackThis);
return query.getCollection(listener, null, {becomeNull: true});
},
/**
* A reference to MsgHdrToMimeMessage that unit testing can clobber when it
* wants to cause us to hang or inject a fault. If you are not
* glodaTestHelper.js then _do not touch this_.
*/
_MsgHdrToMimeMessageFunc: MsgHdrToMimeMessage,
/**
* Primary message indexing logic. This method is mainly concerned with
* getting all the information about the message required for threading /
* conversation building and subsequent processing. It is responsible for
* determining whether to reuse existing gloda messages or whether a new one
* should be created. Most attribute stuff happens in fund_attr.js or
* expl_attr.js.
*
* Prior to calling this method, the caller must have invoked
* |_indexerEnterFolder|, leaving us with the following true invariants
* below.
*
* @pre aMsgHdr.folder == this._indexingFolder
* @pre aMsgHdr.folder.msgDatabase == this._indexingDatabase
*/
_indexMessage: function* gloda_indexMessage(aMsgHdr, aCallbackHandle) {
let logDebug = this._log.level <= Log4Moz.Level.Debug;
if (logDebug)
this._log.debug("*** Indexing message: " + aMsgHdr.messageKey + " : " +
aMsgHdr.subject);
// If the message is offline, then get the message body as well
let isMsgOffline = false;
let aMimeMsg;
if ((aMsgHdr.flags & nsMsgMessageFlags.Offline) ||
(aMsgHdr.folder instanceof nsIMsgLocalMailFolder)) {
isMsgOffline = true;
this._MsgHdrToMimeMessageFunc(aMsgHdr, aCallbackHandle.callbackThis,
aCallbackHandle.callback, false, {saneBodySize: true});
aMimeMsg = (yield this.kWorkAsync)[1];
}
else {
if (logDebug)
this._log.debug(" * Message is not offline -- only headers indexed");
}
if (logDebug)
this._log.debug(" * Got message, subject " + aMsgHdr.subject);
if (this._unitTestSuperVerbose) {
if (aMimeMsg)
this._log.debug(" * Got Mime " + aMimeMsg.prettyString());
else
this._log.debug(" * NO MIME MESSAGE!!!\n");
}
// -- Find/create the conversation the message belongs to.
// Our invariant is that all messages that exist in the database belong to
// a conversation.
// - See if any of the ancestors exist and have a conversationID...
// (references are ordered from old [0] to new [n-1])
let references = Array.from(range(0, aMsgHdr.numReferences)).
map(i => aMsgHdr.getStringReference(i));
// also see if we already know about the message...
references.push(aMsgHdr.messageId);
this.getMessagesByMessageID(references, aCallbackHandle.callback,
aCallbackHandle.callbackThis);
// (ancestorLists has a direct correspondence to the message ids)
let ancestorLists = yield this.kWorkAsync;
if (logDebug) {
this._log.debug("ancestors raw: " + ancestorLists);
this._log.debug("ref len: " + references.length +
" anc len: " + ancestorLists.length);
this._log.debug("references: " +
Log4Moz.enumerateProperties(references).join(","));
this._log.debug("ancestors: " +
Log4Moz.enumerateProperties(ancestorLists).join(","));
}
// pull our current message lookup results off
references.pop();
let candidateCurMsgs = ancestorLists.pop();
let conversationID = null;
let conversation = null;
// -- figure out the conversation ID
// if we have a clone/already exist, just use his conversation ID
if (candidateCurMsgs.length > 0) {
conversationID = candidateCurMsgs[0].conversationID;
conversation = candidateCurMsgs[0].conversation;
}
// otherwise check out our ancestors
else {
// (walk from closest to furthest ancestor)
for (let iAncestor = ancestorLists.length-1; iAncestor >= 0;
--iAncestor) {
let ancestorList = ancestorLists[iAncestor];
if (ancestorList.length > 0) {
// we only care about the first instance of the message because we are
// able to guarantee the invariant that all messages with the same
// message id belong to the same conversation.
let ancestor = ancestorList[0];
if (conversationID === null) {
conversationID = ancestor.conversationID;
conversation = ancestor.conversation;
}
else if (conversationID != ancestor.conversationID) {
// XXX this inconsistency is known and understood and tracked by
// bug 478162 https://bugzilla.mozilla.org/show_bug.cgi?id=478162
//this._log.error("Inconsistency in conversations invariant on " +
// ancestor.headerMessageID + ". It has conv id " +
// ancestor.conversationID + " but expected " +
// conversationID + ". ID: " + ancestor.id);
}
}
}
}
// nobody had one? create a new conversation
if (conversationID === null) {
// (the create method could issue the id, making the call return
// without waiting for the database...)
conversation = this._datastore.createConversation(
aMsgHdr.mime2DecodedSubject, null, null);
conversationID = conversation.id;
}
// Walk from furthest to closest ancestor, creating the ancestors that don't
// exist. (This is possible if previous messages that were consumed in this
// thread only had an in-reply-to or for some reason did not otherwise
// provide the full references chain.)
for (let iAncestor = 0; iAncestor < ancestorLists.length; ++iAncestor) {
let ancestorList = ancestorLists[iAncestor];
if (ancestorList.length == 0) {
if (logDebug)
this._log.debug("creating message with: null, " + conversationID +
", " + references[iAncestor] +
", null.");
let ancestor = this._datastore.createMessage(null, null, // ghost
conversationID, null,
references[iAncestor],
null, // no subject
null, // no body
null); // no attachments
this._datastore.insertMessage(ancestor);
ancestorLists[iAncestor].push(ancestor);
}
}
// now all our ancestors exist, though they may be ghost-like...
// find if there's a ghost version of our message or we already have indexed
// this message.
let curMsg = null;
if (logDebug)
this._log.debug(candidateCurMsgs.length + " candidate messages");
for (let iCurCand = 0; iCurCand < candidateCurMsgs.length; iCurCand++) {
let candMsg = candidateCurMsgs[iCurCand];
if (logDebug)
this._log.debug("candidate folderID: " + candMsg.folderID +
" messageKey: " + candMsg.messageKey);
if (candMsg.folderURI == this._indexingFolder.URI) {
// if we are in the same folder and we have the same message key, we
// are definitely the same, stop looking.
if (candMsg.messageKey == aMsgHdr.messageKey) {
curMsg = candMsg;
break;
}
// if (we are in the same folder and) the candidate message has a null
// message key, we treat it as our best option unless we find an exact
// key match. (this would happen because the 'move' notification case
// has to deal with not knowing the target message key. this case
// will hopefully be somewhat improved in the future to not go through
// this path which mandates re-indexing of the message in its entirety)
if (candMsg.messageKey === null)
curMsg = candMsg;
// if (we are in the same folder and) the candidate message's underlying
// message no longer exists/matches, we'll assume we are the same but
// were betrayed by a re-indexing or something, but we have to make
// sure a perfect match doesn't turn up.
else if ((curMsg === null) &&
!this._indexingDatabase.ContainsKey(candMsg.messageKey))
curMsg = candMsg;
}
// a ghost/deleted message is fine
else if ((curMsg === null) && (candMsg.folderID === null)) {
curMsg = candMsg;
}
}
let attachmentNames = null;
if (aMimeMsg) {
attachmentNames = aMimeMsg.allAttachments.
filter(att => att.isRealAttachment).map(att => att.name);
}
let isConceptuallyNew, isRecordNew, insertFulltext;
if (curMsg === null) {
curMsg = this._datastore.createMessage(aMsgHdr.folder,
aMsgHdr.messageKey,
conversationID,
aMsgHdr.date,
aMsgHdr.messageId);
curMsg._conversation = conversation;
isConceptuallyNew = isRecordNew = insertFulltext = true;
}
else {
isRecordNew = false;
// the message is conceptually new if it was a ghost or dead.
isConceptuallyNew = curMsg._isGhost || curMsg._isDeleted;
// insert fulltext if it was a ghost
insertFulltext = curMsg._isGhost;
curMsg._folderID = this._datastore._mapFolder(aMsgHdr.folder).id;
curMsg._messageKey = aMsgHdr.messageKey;
curMsg.date = new Date(aMsgHdr.date / 1000);
// the message may have been deleted; tell it to make sure it's not.
curMsg._ensureNotDeleted();
// note: we are assuming that our matching logic is flawless in that
// if this message was not a ghost, we are assuming the 'body'
// associated with the id is still exactly the same. It is conceivable
// that there are cases where this is not true.
}
if (aMimeMsg) {
let bodyPlain = aMimeMsg.coerceBodyToPlaintext(aMsgHdr.folder);
if (bodyPlain) {
curMsg._bodyLines = bodyPlain.split(/\r?\n/);
// curMsg._content gets set by fundattr.js
}
}
// Mark the message as new (for the purposes of fulltext insertion)
if (insertFulltext)
curMsg._isNew = true;
curMsg._subject = aMsgHdr.mime2DecodedSubject;
curMsg._attachmentNames = attachmentNames;
// curMsg._indexAuthor gets set by fundattr.js
// curMsg._indexRecipients gets set by fundattr.js
// zero the notability so everything in grokNounItem can just increment
curMsg.notability = 0;
yield aCallbackHandle.pushAndGo(
Gloda.grokNounItem(curMsg,
{header: aMsgHdr, mime: aMimeMsg, bodyLines: curMsg._bodyLines},
isConceptuallyNew, isRecordNew,
aCallbackHandle));
delete curMsg._bodyLines;
delete curMsg._content;
delete curMsg._isNew;
delete curMsg._indexAuthor;
delete curMsg._indexRecipients;
// we want to update the header for messages only after the transaction
// irrevocably hits the disk. otherwise we could get confused if the
// transaction rolls back or what not.
PendingCommitTracker.track(aMsgHdr, curMsg.id);
yield this.kWorkDone;
},
/**
* Wipe a message out of existence from our index. This is slightly more
* tricky than one would first expect because there are potentially
* attributes not immediately associated with this message that reference
* the message. Not only that, but deletion of messages may leave a
* conversation posessing only ghost messages, which we don't want, so we
* need to nuke the moot conversation and its moot ghost messages.
* For now, we are actually punting on that trickiness, and the exact
* nuances aren't defined yet because we have not decided whether to store
* such attributes redundantly. For example, if we have subject-pred-object,
* we could actually store this as attributes (subject, id, object) and
* (object, id, subject). In such a case, we could query on (subject, *)
* and use the results to delete the (object, id, subject) case. If we
* don't redundantly store attributes, we can deal with the problem by
* collecting up all the attributes that accept a message as their object
* type and issuing a delete against that. For example, delete (*, [1,2,3],
* message id).
* (We are punting because we haven't implemented support for generating
* attributes like that yet.)
*
* @TODO: implement deletion of attributes that reference (deleted) messages
*/
_deleteMessage: function* gloda_index_deleteMessage(aMessage,
aCallbackHandle) {
let logDebug = this._log.level <= Log4Moz.Level.Debug;
if (logDebug)
this._log.debug("*** Deleting message: " + aMessage);
// -- delete our attributes
// delete the message's attributes (if we implement the cascade delete, that
// could do the honors for us... right now we define the trigger in our
// schema but the back-end ignores it)
GlodaDatastore.clearMessageAttributes(aMessage);
// -- delete our message or ghost us, and maybe nuke the whole conversation
// Look at the other messages in the conversation.
// (Note: although we are performing a lookup with no validity constraints
// and using the same object-relational-mapper-ish layer used by things
// that do have constraints, we are not at risk of exposing deleted
// messages to other code and getting it confused. The only way code
// can find a message is if it shows up in their queries or gets announced
// via GlodaCollectionManager.itemsAdded, neither of which will happen.)
let convPrivQuery = Gloda.newQuery(Gloda.NOUN_MESSAGE, {
noDbQueryValidityConstraints: true,
});
convPrivQuery.conversation(aMessage.conversation);
let conversationCollection = convPrivQuery.getCollection(aCallbackHandle);
yield this.kWorkAsync;
let conversationMsgs = conversationCollection.items;
// Count the number of ghosts messages we see to determine if we are
// the last message alive.
let ghostCount = 0;
let twinMessageExists = false;
for (let convMsg of conversationMsgs) {
// ignore our own message
if (convMsg.id == aMessage.id)
continue;
if (convMsg._isGhost)
ghostCount++;
// This message is our (living) twin if it is not a ghost, not deleted,
// and has the same message-id header.
else if (!convMsg._isDeleted &&
convMsg.headerMessageID == aMessage.headerMessageID)
twinMessageExists = true;
}
// -- If everyone else is a ghost, blow away the conversation.
// If there are messages still alive or deleted but we have not yet gotten
// to them yet _deleteMessage, then do not do this. (We will eventually
// hit this case if they are all deleted.)
if ((conversationMsgs.length - 1) == ghostCount) {
// - Obliterate each message
for (let msg of conversationMsgs) {
GlodaDatastore.deleteMessageByID(msg.id);
}
// - Obliterate the conversation
GlodaDatastore.deleteConversationByID(aMessage.conversationID);
// *no one* should hold a reference or use aMessage after this point,
// trash it so such ne'er do'wells are made plain.
aMessage._objectPurgedMakeYourselfUnpleasant();
}
// -- Ghost or purge us as appropriate
else {
// Purge us if we have a (living) twin; no ghost required.
if (twinMessageExists) {
GlodaDatastore.deleteMessageByID(aMessage.id);
// *no one* should hold a reference or use aMessage after this point,
// trash it so such ne'er do'wells are made plain.
aMessage._objectPurgedMakeYourselfUnpleasant();
}
// No twin, a ghost is required, we become the ghost.
else {
aMessage._ghost();
GlodaDatastore.updateMessage(aMessage);
// ghosts don't have fulltext. purge it.
GlodaDatastore.deleteMessageTextByID(aMessage.id);
}
}
yield this.kWorkDone;
},
};
GlodaIndexer.registerIndexer(GlodaMsgIndexer);