Anki/anki/sync.py

1116 lines
39 KiB
Python

# -*- coding: utf-8 -*-
# Copyright: Damien Elmes <anki@ichi2.net>
# License: GNU GPL, version 3 or later; http://www.gnu.org/copyleft/gpl.html
import zlib, re, urllib, urllib2, socket, simplejson, time, shutil
import os, base64, httplib, sys, tempfile, httplib, types
from datetime import date
import anki, anki.deck, anki.cards
from anki.db import sqlite
from anki.errors import *
from anki.models import Model, FieldModel, CardModel
from anki.facts import Fact, Field
from anki.cards import Card
from anki.utils import ids2str, hexifyID, checksum
from anki.media import mediaFiles
from anki.lang import _
from hooks import runHook
if simplejson.__version__ < "1.7.3":
raise Exception("SimpleJSON must be 1.7.3 or later.")
CHUNK_SIZE = 32768
MIME_BOUNDARY = "Anki-sync-boundary"
SYNC_HOST = os.environ.get("SYNC_HOST") or "dev.ankiweb.net"
SYNC_PORT = int(os.environ.get("SYNC_PORT") or 80)
SYNC_URL = "http://%s:%d/sync/" % (SYNC_HOST, SYNC_PORT)
KEYS = ("models", "facts", "cards", "media")
##########################################################################
# Monkey-patch httplib to incrementally send instead of chewing up large
# amounts of memory, and track progress.
sendProgressHook = None
def incrementalSend(self, strOrFile):
if self.sock is None:
if self.auto_open:
self.connect()
else:
raise NotConnected()
if self.debuglevel > 0:
print "send:", repr(str)
try:
if (isinstance(strOrFile, str) or
isinstance(strOrFile, unicode)):
self.sock.sendall(strOrFile)
else:
cnt = 0
t = time.time()
while 1:
if sendProgressHook and time.time() - t > 1:
sendProgressHook(cnt)
t = time.time()
data = strOrFile.read(CHUNK_SIZE)
cnt += len(data)
if not data:
break
self.sock.sendall(data)
except socket.error, v:
if v[0] == 32: # Broken pipe
self.close()
raise
httplib.HTTPConnection.send = incrementalSend
def fullSyncProgressHook(cnt):
runHook("fullSyncProgress", "fromLocal", cnt)
##########################################################################
class SyncTools(object):
def __init__(self, deck=None):
self.deck = deck
self.diffs = {}
self.serverExcludedTags = []
self.timediff = 0
self.fullThreshold = 2000
# Control
##########################################################################
def setServer(self, server):
self.server = server
def sync(self):
"Sync two decks locally. Reimplement this for finer control."
if not self.prepareSync(0):
return
lsum = self.summary(self.deck.lastSync)
if lsum:
rsum = self.server.summary(self.deck.lastSync)
if not lsum or not rsum:
raise Exception("full sync required")
payload = self.genPayload((lsum, rsum))
res = self.server.applyPayload(payload)
self.applyPayloadReply(res)
self.deck.reset()
def prepareSync(self, timediff):
"Sync setup. True if sync needed."
self.localTime = self.modified()
self.remoteTime = self.server.modified()
if self.localTime == self.remoteTime:
return False
l = self._lastSync(); r = self.server._lastSync()
# set lastSync to the lower of the two sides, account for slow clocks,
# and assume it took up to 10 seconds for the reply to arrive
self.deck.lastSync = max(0, min(l, r) - timediff - 10)
return True
def genPayload(self, summaries):
(lsum, rsum) = summaries
payload = {}
# first, handle models, facts and cards
for key in KEYS:
diff = self.diffSummary(lsum, rsum, key)
payload["added-" + key] = self.getObjsFromKey(diff[0], key)
payload["deleted-" + key] = diff[1]
payload["missing-" + key] = diff[2]
self.deleteObjsFromKey(diff[3], key)
# handle the remainder
if self.localTime > self.remoteTime:
payload['history'] = self.bundleHistory()
payload['sources'] = self.bundleSources()
# finally, set new lastSync and bundle the deck info
payload['deck'] = self.bundleDeck()
return payload
def applyPayload(self, payload):
reply = {}
# model, facts and cards
for key in KEYS:
k = 'added-' + key
# send back any requested
if k in payload:
reply[k] = self.getObjsFromKey(
payload['missing-' + key], key)
self.updateObjsFromKey(payload['added-' + key], key)
self.deleteObjsFromKey(payload['deleted-' + key], key)
# send back deck-related stuff if it wasn't sent to us
if not 'deck' in payload:
reply['history'] = self.bundleHistory()
reply['sources'] = self.bundleSources()
# finally, set new lastSync and bundle the deck info
reply['deck'] = self.bundleDeck()
else:
self.updateDeck(payload['deck'])
self.updateHistory(payload['history'])
if 'sources' in payload:
self.updateSources(payload['sources'])
self.postSyncRefresh()
cardIds = [x[0] for x in payload['added-cards']]
self.deck.updateCardTags(cardIds)
return reply
def applyPayloadReply(self, reply):
# model, facts and cards
for key in KEYS:
k = 'added-' + key
# old version may not send media
if k in reply:
self.updateObjsFromKey(reply['added-' + key], key)
# deck
if 'deck' in reply:
self.updateDeck(reply['deck'])
self.updateHistory(reply['history'])
if 'sources' in reply:
self.updateSources(reply['sources'])
self.postSyncRefresh()
cardIds = [x[0] for x in reply['added-cards']]
self.deck.updateCardTags(cardIds)
if self.missingFacts() != 0:
raise Exception(
"Facts missing after sync. Please run Tools>Advanced>Check DB.")
def missingFacts(self):
return self.deck.s.scalar(
"select count() from cards where factId "+
"not in (select id from facts)");
def postSyncRefresh(self):
"Flush changes to DB, and reload object associations."
self.deck.s.flush()
self.deck.s.refresh(self.deck)
self.deck.currentModel
# Summaries
##########################################################################
def summary(self, lastSync):
"Generate a full summary of modtimes for two-way syncing."
# client may have selected an earlier sync time
self.deck.lastSync = lastSync
# return early if there's been a schema change
if self.deck.getFloat("schemaMod") > lastSync:
return None
d = {}
cats = [
# cards
("cards",
"select id, modified from cards where modified > :m"),
("delcards",
"select cardId, deletedTime from cardsDeleted "
"where deletedTime > :m"),
# facts
("facts",
"select id, modified from facts where modified > :m"),
("delfacts",
"select factId, deletedTime from factsDeleted "
"where deletedTime > :m"),
# models
("models",
"select id, modified from models where modified > :m"),
("delmodels",
"select modelId, deletedTime from modelsDeleted "
"where deletedTime > :m"),
# media
("media",
"select id, created from media where created > :m"),
("delmedia",
"select mediaId, deletedTime from mediaDeleted "
"where deletedTime > :m")
]
for (key, sql) in cats:
if self.fullThreshold:
sql += " limit %d" % self.fullThreshold
ret = self.deck.s.all(sql, m=lastSync)
if self.fullThreshold and self.fullThreshold == len(ret):
# theshold exceeded, abort early
return None
d[key] = self.realLists(ret)
return d
# Diffing
##########################################################################
def diffSummary(self, localSummary, remoteSummary, key):
# list of ids on both ends
lexists = localSummary[key]
ldeleted = localSummary["del"+key]
rexists = remoteSummary[key]
rdeleted = remoteSummary["del"+key]
ldeletedIds = dict(ldeleted)
rdeletedIds = dict(rdeleted)
# to store the results
locallyEdited = []
locallyDeleted = []
remotelyEdited = []
remotelyDeleted = []
# build a hash of all ids, with value (localMod, remoteMod).
# deleted/nonexisting cards are marked with a modtime of None.
ids = {}
for (id, mod) in rexists:
ids[id] = [None, mod]
for (id, mod) in rdeleted:
ids[id] = [None, None]
for (id, mod) in lexists:
if id in ids:
ids[id][0] = mod
else:
ids[id] = [mod, None]
for (id, mod) in ldeleted:
if id in ids:
ids[id][0] = None
else:
ids[id] = [None, None]
# loop through the hash, determining differences
for (id, (localMod, remoteMod)) in ids.items():
if localMod and remoteMod:
# changed/existing on both sides
if localMod < remoteMod:
remotelyEdited.append(id)
elif localMod > remoteMod:
locallyEdited.append(id)
elif localMod and not remoteMod:
# if it's missing on server or newer here, sync
if (id not in rdeletedIds or
rdeletedIds[id] < localMod):
locallyEdited.append(id)
else:
remotelyDeleted.append(id)
elif remoteMod and not localMod:
# if it's missing locally or newer there, sync
if (id not in ldeletedIds or
ldeletedIds[id] < remoteMod):
remotelyEdited.append(id)
else:
locallyDeleted.append(id)
else:
if id in ldeletedIds and id not in rdeletedIds:
locallyDeleted.append(id)
elif id in rdeletedIds and id not in ldeletedIds:
remotelyDeleted.append(id)
return (locallyEdited, locallyDeleted,
remotelyEdited, remotelyDeleted)
# Models
##########################################################################
def getModels(self, ids, updateModified=False):
return [self.bundleModel(id, updateModified) for id in ids]
def bundleModel(self, id, updateModified):
"Return a model representation suitable for transport."
mod = self.deck.s.query(Model).get(id)
# force load of lazy attributes
mod.fieldModels; mod.cardModels
m = self.dictFromObj(mod)
m['fieldModels'] = [self.bundleFieldModel(fm) for fm in m['fieldModels']]
m['cardModels'] = [self.bundleCardModel(fm) for fm in m['cardModels']]
if updateModified:
m['modified'] = time.time()
return m
def bundleFieldModel(self, fm):
d = self.dictFromObj(fm)
if 'model' in d: del d['model']
return d
def bundleCardModel(self, cm):
d = self.dictFromObj(cm)
if 'model' in d: del d['model']
return d
def updateModels(self, models):
for model in models:
local = self.getModel(model['id'])
# avoid overwriting any existing card/field models
fms = model['fieldModels']; del model['fieldModels']
cms = model['cardModels']; del model['cardModels']
self.applyDict(local, model)
self.mergeFieldModels(local, fms)
self.mergeCardModels(local, cms)
self.deck.s.statement(
"delete from modelsDeleted where modelId in %s" %
ids2str([m['id'] for m in models]))
def getModel(self, id, create=True):
"Return a local model with same ID, or create."
id = int(id)
for l in self.deck.models:
if l.id == id:
return l
if not create:
return
m = Model()
self.deck.models.append(m)
return m
def mergeFieldModels(self, model, fms):
ids = []
for fm in fms:
local = self.getFieldModel(model, fm)
self.applyDict(local, fm)
ids.append(fm['id'])
for fm in model.fieldModels:
if fm.id not in ids:
self.deck.deleteFieldModel(model, fm)
def getFieldModel(self, model, remote):
id = int(remote['id'])
for fm in model.fieldModels:
if fm.id == id:
return fm
fm = FieldModel()
model.addFieldModel(fm)
return fm
def mergeCardModels(self, model, cms):
ids = []
for cm in cms:
local = self.getCardModel(model, cm)
if not 'allowEmptyAnswer' in cm or cm['allowEmptyAnswer'] is None:
cm['allowEmptyAnswer'] = True
self.applyDict(local, cm)
ids.append(cm['id'])
for cm in model.cardModels:
if cm.id not in ids:
self.deck.deleteCardModel(model, cm)
def getCardModel(self, model, remote):
id = int(remote['id'])
for cm in model.cardModels:
if cm.id == id:
return cm
cm = CardModel()
model.addCardModel(cm)
return cm
def deleteModels(self, ids):
for id in ids:
model = self.getModel(id, create=False)
if model:
self.deck.deleteModel(model)
# Facts
##########################################################################
def getFacts(self, ids, updateModified=False):
if updateModified:
modified = time.time()
else:
modified = "modified"
factIds = ids2str(ids)
return {
'facts': self.realLists(self.deck.s.all("""
select id, modelId, created, %s, tags, spaceUntil, lastCardId from facts
where id in %s""" % (modified, factIds))),
'fields': self.realLists(self.deck.s.all("""
select id, factId, fieldModelId, ordinal, value, chksum from fields
where factId in %s""" % factIds))
}
def updateFacts(self, factsdict):
facts = factsdict['facts']
fields = factsdict['fields']
if not facts:
return
# update facts first
dlist = [{
'id': f[0],
'modelId': f[1],
'created': f[2],
'modified': f[3],
'tags': f[4],
'spaceUntil': f[5] or "",
'lastCardId': f[6]
} for f in facts]
self.deck.s.execute("""
insert or replace into facts
(id, modelId, created, modified, tags, spaceUntil, lastCardId)
values
(:id, :modelId, :created, :modified, :tags, :spaceUntil, :lastCardId)""", dlist)
# now fields
def chksum(f):
if len(f) > 5:
return f[5]
return self.deck.fieldChecksum(f[4])
dlist = [{
'id': f[0],
'factId': f[1],
'fieldModelId': f[2],
'ordinal': f[3],
'value': f[4],
'chksum': f[5]
} for f in fields]
# delete local fields since ids may have changed
self.deck.s.execute(
"delete from fields where factId in %s" %
ids2str([f[0] for f in facts]))
# then update
self.deck.s.execute("""
insert into fields
(id, factId, fieldModelId, ordinal, value, chksum)
values
(:id, :factId, :fieldModelId, :ordinal, :value, :chksum)""", dlist)
self.deck.s.statement(
"delete from factsDeleted where factId in %s" %
ids2str([f[0] for f in facts]))
def deleteFacts(self, ids):
self.deck.deleteFacts(ids)
# Cards
##########################################################################
def getCards(self, ids):
return self.realLists(self.deck.s.all("""
select id, factId, cardModelId, created, modified, tags, ordinal,
priority, interval, lastInterval, due, lastDue, factor,
firstAnswered, reps, successive, averageTime, reviewTime, youngEase0,
youngEase1, youngEase2, youngEase3, youngEase4, matureEase0,
matureEase1, matureEase2, matureEase3, matureEase4, yesCount, noCount,
question, answer, lastFactor, spaceUntil, type, combinedDue, relativeDelay
from cards where id in %s""" % ids2str(ids)))
def updateCards(self, cards):
if not cards:
return
dlist = [{'id': c[0],
'factId': c[1],
'cardModelId': c[2],
'created': c[3],
'modified': c[4],
'tags': c[5],
'ordinal': c[6],
'priority': c[7],
'interval': c[8],
'lastInterval': c[9],
'due': c[10],
'lastDue': c[11],
'factor': c[12],
'firstAnswered': c[13],
'reps': c[14],
'successive': c[15],
'averageTime': c[16],
'reviewTime': c[17],
'youngEase0': c[18],
'youngEase1': c[19],
'youngEase2': c[20],
'youngEase3': c[21],
'youngEase4': c[22],
'matureEase0': c[23],
'matureEase1': c[24],
'matureEase2': c[25],
'matureEase3': c[26],
'matureEase4': c[27],
'yesCount': c[28],
'noCount': c[29],
'question': c[30],
'answer': c[31],
'lastFactor': c[32],
'spaceUntil': c[33],
'type': c[34],
'combinedDue': c[35],
'rd': c[36],
} for c in cards]
self.deck.s.execute("""
insert or replace into cards
(id, factId, cardModelId, created, modified, tags, ordinal,
priority, interval, lastInterval, due, lastDue, factor,
firstAnswered, reps, successive, averageTime, reviewTime, youngEase0,
youngEase1, youngEase2, youngEase3, youngEase4, matureEase0,
matureEase1, matureEase2, matureEase3, matureEase4, yesCount, noCount,
question, answer, lastFactor, spaceUntil, type, combinedDue,
relativeDelay, isDue)
values
(:id, :factId, :cardModelId, :created, :modified, :tags, :ordinal,
:priority, :interval, :lastInterval, :due, :lastDue, :factor,
:firstAnswered, :reps, :successive, :averageTime, :reviewTime, :youngEase0,
:youngEase1, :youngEase2, :youngEase3, :youngEase4, :matureEase0,
:matureEase1, :matureEase2, :matureEase3, :matureEase4, :yesCount,
:noCount, :question, :answer, :lastFactor, :spaceUntil,
:type, :combinedDue, :rd, 0)""", dlist)
self.deck.s.statement(
"delete from cardsDeleted where cardId in %s" %
ids2str([c[0] for c in cards]))
def deleteCards(self, ids):
self.deck.deleteCards(ids)
# Deck/history
##########################################################################
def bundleDeck(self):
# ensure modified is not greater than server time
if getattr(self, "server", None) and getattr(
self.server, "timestamp", None):
self.deck.modified = min(self.deck.modified,self.server.timestamp)
# and ensure lastSync is greater than modified
self.deck.lastSync = max(time.time(), self.deck.modified+1)
d = self.dictFromObj(self.deck)
del d['Session']
del d['engine']
del d['s']
del d['path']
del d['syncName']
del d['version']
if 'newQueue' in d:
del d['newQueue']
del d['failedQueue']
del d['revQueue']
# these may be deleted before bundling
if 'css' in d: del d['css']
if 'models' in d: del d['models']
if 'currentModel' in d: del d['currentModel']
keys = d.keys()
for k in keys:
if isinstance(d[k], types.MethodType):
del d[k]
d['meta'] = self.realLists(self.deck.s.all("select * from deckVars"))
return d
def updateDeck(self, deck):
if 'meta' in deck:
meta = deck['meta']
for (k,v) in meta:
self.deck.s.statement("""
insert or replace into deckVars
(key, value) values (:k, :v)""", k=k, v=v)
del deck['meta']
self.applyDict(self.deck, deck)
def bundleHistory(self):
return self.realLists(self.deck.s.all("""
select * from revlog where time > :ls""",
ls=self.deck.lastSync))
def updateHistory(self, history):
dlist = [{'time': h[0],
'cardId': h[1],
'ease': h[2],
'rep': h[3],
'lastInterval': h[4],
'interval': h[5],
'factor': h[6],
'userTime': h[7],
'flags': h[8]} for h in history]
if not dlist:
return
self.deck.s.statements("""
insert or ignore into revlog values
(:time, :cardId, :ease, :rep, :lastInterval, :interval, :factor,
:userTime, :flags)""",
dlist)
def bundleSources(self):
return self.realLists(self.deck.s.all("select * from sources"))
def updateSources(self, sources):
for s in sources:
self.deck.s.statement("""
insert or replace into sources values
(:id, :name, :created, :lastSync, :syncPeriod)""",
id=s[0],
name=s[1],
created=s[2],
lastSync=s[3],
syncPeriod=s[4])
# Media metadata
##########################################################################
def getMedia(self, ids):
return [tuple(row) for row in self.deck.s.all("""
select id, filename, size, created, originalPath, description
from media where id in %s""" % ids2str(ids))]
def updateMedia(self, media):
meta = []
for m in media:
# build meta
meta.append({
'id': m[0],
'filename': m[1],
'size': m[2],
'created': m[3],
'originalPath': m[4],
'description': m[5]})
# apply metadata
if meta:
self.deck.s.statements("""
insert or replace into media (id, filename, size, created,
originalPath, description)
values (:id, :filename, :size, :created, :originalPath,
:description)""", meta)
self.deck.s.statement(
"delete from mediaDeleted where mediaId in %s" %
ids2str([m[0] for m in media]))
def deleteMedia(self, ids):
sids = ids2str(ids)
files = self.deck.s.column0(
"select filename from media where id in %s" % sids)
self.deck.s.statement("""
insert into mediaDeleted
select id, :now from media
where media.id in %s""" % sids, now=time.time())
self.deck.s.execute(
"delete from media where id in %s" % sids)
# One-way syncing (sharing)
##########################################################################
def syncOneWay(self, lastSync):
"Sync two decks one way."
payload = self.server.genOneWayPayload(lastSync)
self.applyOneWayPayload(payload)
self.deck.reset()
def syncOneWayDeckName(self):
return (self.deck.s.scalar("select name from sources where id = :id",
id=self.server.deckName) or
hexifyID(int(self.server.deckName)))
def prepareOneWaySync(self):
"Sync setup. True if sync needed. Not used for local sync."
srcID = self.server.deckName
(lastSync, syncPeriod) = self.deck.s.first(
"select lastSync, syncPeriod from sources where id = :id", id=srcID)
if self.server.modified() <= lastSync:
return
self.deck.lastSync = lastSync
return True
def genOneWayPayload(self, lastSync):
"Bundle all added or changed objects since the last sync."
p = {}
# facts
factIds = self.deck.s.column0(
"select id from facts where modified > :l", l=lastSync)
p['facts'] = self.getFacts(factIds, updateModified=True)
# models
modelIds = self.deck.s.column0(
"select id from models where modified > :l", l=lastSync)
p['models'] = self.getModels(modelIds, updateModified=True)
# media
mediaIds = self.deck.s.column0(
"select id from media where created > :l", l=lastSync)
p['media'] = self.getMedia(mediaIds)
# cards
cardIds = self.deck.s.column0(
"select id from cards where modified > :l", l=lastSync)
p['cards'] = self.realLists(self.getOneWayCards(cardIds))
return p
def applyOneWayPayload(self, payload):
keys = [k for k in KEYS if k != "cards"]
# model, facts, media
for key in keys:
self.updateObjsFromKey(payload[key], key)
# models need their source tagged
for m in payload["models"]:
self.deck.s.statement("update models set source = :s "
"where id = :id",
s=self.server.deckName,
id=m['id'])
# cards last, handled differently
t = time.time()
try:
self.updateOneWayCards(payload['cards'])
except KeyError:
sys.stderr.write("Subscribed to a broken deck. "
"Try removing your deck subscriptions.")
t = 0
# update sync time
self.deck.s.statement(
"update sources set lastSync = :t where id = :id",
id=self.server.deckName, t=t)
self.deck.modified = time.time()
def getOneWayCards(self, ids):
"The minimum information necessary to generate one way cards."
return self.deck.s.all(
"select id, factId, cardModelId, ordinal, created from cards "
"where id in %s" % ids2str(ids))
def updateOneWayCards(self, cards):
if not cards:
return
t = time.time()
dlist = [{'id': c[0], 'factId': c[1], 'cardModelId': c[2],
'ordinal': c[3], 'created': c[4], 't': t} for c in cards]
# add any missing cards
self.deck.s.statements("""
insert or ignore into cards
(id, factId, cardModelId, created, modified, tags, ordinal,
priority, interval, lastInterval, due, lastDue, factor,
firstAnswered, reps, successive, averageTime, reviewTime, youngEase0,
youngEase1, youngEase2, youngEase3, youngEase4, matureEase0,
matureEase1, matureEase2, matureEase3, matureEase4, yesCount, noCount,
question, answer, lastFactor, spaceUntil, isDue, type, combinedDue,
relativeDelay)
values
(:id, :factId, :cardModelId, :created, :t, "", :ordinal,
1, 0, 0, :created, 0, 2.5,
0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0,
0, 0, 0, 0, 0,
0, "", "", 2.5, 0, 0, 2, :t, 2)""", dlist)
# update q/as
models = dict(self.deck.s.all("""
select cards.id, models.id
from cards, facts, models
where cards.factId = facts.id
and facts.modelId = models.id
and cards.id in %s""" % ids2str([c[0] for c in cards])))
self.deck.s.flush()
self.deck.updateCardQACache(
[(c[0], c[2], c[1], models[c[0]]) for c in cards])
# rebuild priorities on client
cardIds = [c[0] for c in cards]
self.deck.updateCardTags(cardIds)
self.rebuildPriorities(cardIds)
# Tools
##########################################################################
def modified(self):
return self.deck.modified
def _lastSync(self):
return self.deck.lastSync
def unstuff(self, data):
"Uncompress and convert to unicode."
return simplejson.loads(unicode(zlib.decompress(data), "utf8"))
def stuff(self, data):
"Convert into UTF-8 and compress."
return zlib.compress(simplejson.dumps(data))
def dictFromObj(self, obj):
"Return a dict representing OBJ without any hidden db fields."
return dict([(k,v) for (k,v) in obj.__dict__.items()
if not k.startswith("_")])
def applyDict(self, obj, dict):
"Apply each element in DICT to OBJ in a way the ORM notices."
for (k,v) in dict.items():
setattr(obj, k, v)
def realLists(self, result):
"Convert an SQLAlchemy response into a list of real lists."
return [list(x) for x in result]
def getObjsFromKey(self, ids, key):
return getattr(self, "get" + key.capitalize())(ids)
def deleteObjsFromKey(self, ids, key):
return getattr(self, "delete" + key.capitalize())(ids)
def updateObjsFromKey(self, ids, key):
return getattr(self, "update" + key.capitalize())(ids)
# Full sync
##########################################################################
def needFullSync(self, sums):
if self.deck.lastSync <= 0:
return True
for sum in sums:
for l in sum.values():
if len(l) > 1000:
return True
if self.deck.s.scalar(
"select count() from revlog where time > :ls",
ls=self.deck.lastSync) > 1000:
return True
lastDay = date.fromtimestamp(max(0, self.deck.lastSync - 60*60*24))
return False
def prepareFullSync(self):
t = time.time()
# ensure modified is not greater than server time
self.deck.modified = min(self.deck.modified, self.server.timestamp)
self.deck.s.commit()
self.deck.close()
fields = {
"p": self.server.password,
"u": self.server.username,
"d": self.server.deckName.encode("utf-8"),
}
if self.localTime > self.remoteTime:
return ("fromLocal", fields, self.deck.path)
else:
return ("fromServer", fields, self.deck.path)
def fullSync(self):
ret = self.prepareFullSync()
if ret[0] == "fromLocal":
self.fullSyncFromLocal(ret[1], ret[2])
else:
self.fullSyncFromServer(ret[1], ret[2])
def fullSyncFromLocal(self, fields, path):
global sendProgressHook
try:
# write into a temporary file, since POST needs content-length
src = open(path, "rb")
(fd, name) = tempfile.mkstemp(prefix="anki")
tmp = open(name, "w+b")
# post vars
for (key, value) in fields.items():
tmp.write('--' + MIME_BOUNDARY + "\r\n")
tmp.write('Content-Disposition: form-data; name="%s"\r\n' % key)
tmp.write('\r\n')
tmp.write(value)
tmp.write('\r\n')
# file header
tmp.write('--' + MIME_BOUNDARY + "\r\n")
tmp.write(
'Content-Disposition: form-data; name="deck"; filename="deck"\r\n')
tmp.write('Content-Type: application/octet-stream\r\n')
tmp.write('\r\n')
# data
comp = zlib.compressobj()
while 1:
data = src.read(CHUNK_SIZE)
if not data:
tmp.write(comp.flush())
break
tmp.write(comp.compress(data))
src.close()
tmp.write('\r\n--' + MIME_BOUNDARY + '--\r\n\r\n')
size = tmp.tell()
tmp.seek(0)
# open http connection
runHook("fullSyncStarted", size)
headers = {
'Content-type': 'multipart/form-data; boundary=%s' %
MIME_BOUNDARY,
'Content-length': str(size),
'Host': SYNC_HOST,
}
req = urllib2.Request(SYNC_URL + "fullup?v=2", tmp, headers)
try:
sendProgressHook = fullSyncProgressHook
res = urllib2.urlopen(req).read()
assert res.startswith("OK")
# update lastSync
c = sqlite.connect(path)
c.execute("update decks set lastSync = ?",
(res[3:],))
c.commit()
c.close()
finally:
sendProgressHook = None
tmp.close()
os.close(fd)
os.unlink(name)
finally:
runHook("fullSyncFinished")
def fullSyncFromServer(self, fields, path):
try:
runHook("fullSyncStarted", 0)
fields = urllib.urlencode(fields)
src = urllib.urlopen(SYNC_URL + "fulldown", fields)
(fd, tmpname) = tempfile.mkstemp(dir=os.path.dirname(path),
prefix="fullsync")
tmp = open(tmpname, "wb")
decomp = zlib.decompressobj()
cnt = 0
while 1:
data = src.read(CHUNK_SIZE)
if not data:
tmp.write(decomp.flush())
break
tmp.write(decomp.decompress(data))
cnt += CHUNK_SIZE
runHook("fullSyncProgress", "fromServer", cnt)
src.close()
tmp.close()
os.close(fd)
# if we were successful, overwrite old deck
os.unlink(path)
os.rename(tmpname, path)
# reset the deck name
c = sqlite.connect(path)
c.execute("update decks set syncName = ?",
[checksum(path.encode("utf-8"))])
c.commit()
c.close()
finally:
runHook("fullSyncFinished")
# Local syncing
##########################################################################
class SyncServer(SyncTools):
def __init__(self, deck=None):
SyncTools.__init__(self, deck)
class SyncClient(SyncTools):
pass
# HTTP proxy: act as a server and direct requests to the real server
##########################################################################
class HttpSyncServerProxy(SyncServer):
def __init__(self, user, passwd):
SyncServer.__init__(self)
self.decks = None
self.deckName = None
self.username = user
self.password = passwd
self.protocolVersion = 5
self.sourcesToCheck = []
def connect(self, clientVersion=""):
"Check auth, protocol & grab deck list."
if not self.decks:
import socket
socket.setdefaulttimeout(30)
d = self.runCmd("getDecks",
libanki=anki.version,
client=clientVersion,
sources=simplejson.dumps(self.sourcesToCheck),
pversion=self.protocolVersion)
socket.setdefaulttimeout(None)
if d['status'] != "OK":
raise SyncError(type="authFailed", status=d['status'])
self.decks = d['decks']
self.timestamp = d['timestamp']
self.timediff = abs(self.timestamp - time.time())
def hasDeck(self, deckName):
self.connect()
return deckName in self.decks.keys()
def availableDecks(self):
self.connect()
return self.decks.keys()
def createDeck(self, deckName):
ret = self.runCmd("createDeck", name=deckName.encode("utf-8"))
if not ret or ret['status'] != "OK":
raise SyncError(type="createFailed")
self.decks[deckName] = [0, 0]
def summary(self, lastSync):
return self.runCmd("summary",
lastSync=self.stuff(lastSync))
def genOneWayPayload(self, lastSync):
return self.runCmd("genOneWayPayload",
lastSync=self.stuff(lastSync))
def modified(self):
self.connect()
return self.decks[self.deckName][0]
def _lastSync(self):
self.connect()
return self.decks[self.deckName][1]
def applyPayload(self, payload):
return self.runCmd("applyPayload",
payload=self.stuff(payload))
def finish(self):
assert self.runCmd("finish") == "OK"
def runCmd(self, action, **args):
data = {"p": self.password,
"u": self.username,
"v": 2}
if self.deckName:
data['d'] = self.deckName.encode("utf-8")
else:
data['d'] = None
data.update(args)
data = urllib.urlencode(data)
try:
f = urllib2.urlopen(SYNC_URL + action, data)
except (urllib2.URLError, socket.error, socket.timeout,
httplib.BadStatusLine), e:
raise SyncError(type="connectionError",
exc=`e`)
ret = f.read()
if not ret:
raise SyncError(type="noResponse")
try:
return self.unstuff(ret)
except Exception, e:
raise SyncError(type="connectionError",
exc=`e`)
# HTTP server: respond to proxy requests and return data
##########################################################################
class HttpSyncServer(SyncServer):
def __init__(self):
SyncServer.__init__(self)
self.decks = {}
self.deck = None
def summary(self, lastSync):
return self.stuff(SyncServer.summary(
self, float(zlib.decompress(lastSync))))
def applyPayload(self, payload):
return self.stuff(SyncServer.applyPayload(self,
self.unstuff(payload)))
def genOneWayPayload(self, lastSync):
return self.stuff(SyncServer.genOneWayPayload(
self, float(zlib.decompress(lastSync))))
def getDecks(self, libanki, client, sources, pversion):
return self.stuff({
"status": "OK",
"decks": self.decks,
"timestamp": time.time(),
})
def createDeck(self, name):
"Create a deck on the server. Not implemented."
return self.stuff("OK")
# Local media copying
##########################################################################
def copyLocalMedia(src, dst):
srcDir = src.mediaDir()
if not srcDir:
return
dstDir = dst.mediaDir(create=True)
files = os.listdir(srcDir)
# find media references
used = {}
for col in ("question", "answer"):
txt = dst.s.column0("""
select %(c)s from cards where
%(c)s like '%%<img %%'
or %(c)s like '%%[sound:%%'""" % {'c': col})
for entry in txt:
for fname in mediaFiles(entry):
used[fname] = True
# copy only used media
for file in files:
if file not in used:
continue
srcfile = os.path.join(srcDir, file)
dstfile = os.path.join(dstDir, file)
if not os.path.exists(dstfile):
try:
shutil.copy2(srcfile, dstfile)
except IOError, OSError:
pass