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WIP: Refactoring to get db fields in one query.

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Signed-off-by: Daira Hopwood <daira@jacaranda.org>
This commit is contained in:
Daira Hopwood 2015-10-29 20:43:44 +00:00
parent 54ae5b2abb
commit 7d5cd3cbff
2 changed files with 47 additions and 85 deletions
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63
src/allmydata/frontends/magic_folder.py
View File

@ -322,17 +322,15 @@ class Uploader(QueueMixin):
# FIXME merge this with the 'isfile' case.
self._log("notified object %s disappeared (this is normal)" % quote_filepath(fp))
self._count('objects_disappeared')
if not self._db.check_file_db_exists(relpath_u):
db_entry = self._db.get_db_entry(relpath_u)
if db_entry is None:
return None
last_downloaded_timestamp = now
last_downloaded_uri = self._db.get_last_downloaded_uri(relpath_u)
last_downloaded_timestamp = now # is this correct?
current_version = self._db.get_local_file_version(relpath_u)
if current_version is None:
new_version = 0
elif self._db.is_new_file(pathinfo, relpath_u):
new_version = current_version + 1
if self._db.is_new_file(pathinfo, relpath_u):
new_version = db_entry.version + 1
else:
self._log("Not uploading %r" % (relpath_u,))
self._count('objects_not_uploaded')
@ -341,8 +339,8 @@ class Uploader(QueueMixin):
metadata = { 'version': new_version,
'deleted': True,
'last_downloaded_timestamp': last_downloaded_timestamp }
if last_downloaded_uri is not None:
metadata['last_downloaded_uri'] = last_downloaded_uri
if db_entry.last_downloaded_uri is not None:
metadata['last_downloaded_uri'] = db_entry.last_downloaded_uri
empty_uploadable = Data("", self._client.convergence)
d2 = self._upload_dirnode.add_file(encoded_path_u, empty_uploadable,
@ -350,8 +348,10 @@ class Uploader(QueueMixin):
def _add_db_entry(filenode):
filecap = filenode.get_uri()
last_downloaded_uri = metadata.get('last_downloaded_uri', None)
self._db.did_upload_version(relpath_u, new_version, filecap,
last_downloaded_uri, last_downloaded_timestamp, pathinfo)
last_downloaded_uri, last_downloaded_timestamp,
pathinfo)
self._count('files_uploaded')
d2.addCallback(_add_db_entry)
return d2
@ -373,14 +373,14 @@ class Uploader(QueueMixin):
upload_d.addCallback(lambda ign: self._scan(relpath_u))
return upload_d
elif pathinfo.isfile:
last_downloaded_uri = self._db.get_last_downloaded_uri(relpath_u)
db_entry = self._db.get_db_entry(relpath_u)
last_downloaded_timestamp = now
current_version = self._db.get_local_file_version(relpath_u)
if current_version is None:
if db_entry is None:
new_version = 0
elif self._db.is_new_file(pathinfo, relpath_u):
new_version = current_version + 1
new_version = db_entry.version + 1
else:
self._log("Not uploading %r" % (relpath_u,))
self._count('objects_not_uploaded')
@ -388,8 +388,8 @@ class Uploader(QueueMixin):
metadata = { 'version': new_version,
'last_downloaded_timestamp': last_downloaded_timestamp }
if last_downloaded_uri is not None:
metadata['last_downloaded_uri'] = last_downloaded_uri
if db_entry is not None and db_entry.last_downloaded_uri is not None:
metadata['last_downloaded_uri'] = db_entry.last_downloaded_uri
uploadable = FileName(unicode_from_filepath(fp), self._client.convergence)
d2 = self._upload_dirnode.add_file(encoded_path_u, uploadable,
@ -399,7 +399,8 @@ class Uploader(QueueMixin):
filecap = filenode.get_uri()
last_downloaded_uri = metadata.get('last_downloaded_uri', None)
self._db.did_upload_version(relpath_u, new_version, filecap,
last_downloaded_uri, last_downloaded_timestamp, pathinfo)
last_downloaded_uri, last_downloaded_timestamp,
pathinfo)
self._count('files_uploaded')
d2.addCallback(_add_db_entry)
return d2
@ -547,9 +548,11 @@ class Downloader(QueueMixin, WriteFileMixin):
self._log("nope")
return False
self._log("yep")
v = self._db.get_local_file_version(relpath_u)
self._log("v = %r" % (v,))
return (v is None or v < remote_version)
db_entry = self._db.get_db_entry(relpath_u)
if db_entry is None:
return True
self._log("version %r" % (db_entry.version,))
return (db_entry.version < remote_version)
def _get_local_latest(self, relpath_u):
"""
@ -559,7 +562,8 @@ class Downloader(QueueMixin, WriteFileMixin):
"""
if not self._get_filepath(relpath_u).exists():
return None
return self._db.get_local_file_version(relpath_u)
db_entry = self._db.get_db_entry(relpath_u)
return None if db_entry is None else db_entry.version
def _get_collective_latest_file(self, filename):
"""
@ -705,20 +709,19 @@ class Downloader(QueueMixin, WriteFileMixin):
d.addCallback(fail)
else:
is_conflict = False
if self._db.check_file_db_exists(relpath_u):
db_entry = self._db.get_db_entry(relpath_u)
if db_entry:
dmd_last_downloaded_uri = metadata.get('last_downloaded_uri', None)
local_last_downloaded_uri = self._db.get_last_downloaded_uri(relpath_u)
print "metadata %r" % (metadata,)
print "<<<<--- if %r != %r" % (dmd_last_downloaded_uri, local_last_downloaded_uri)
if dmd_last_downloaded_uri is not None and local_last_downloaded_uri is not None:
if dmd_last_downloaded_uri != local_last_downloaded_uri:
print "<<<<--- if %r != %r" % (dmd_last_downloaded_uri, db_entry.last_downloaded_uri)
if dmd_last_downloaded_uri is not None and db_entry.last_downloaded_uri is not None:
if dmd_last_downloaded_uri != db_entry.last_downloaded_uri:
is_conflict = True
self._count('objects_conflicted')
else:
dmd_last_uploaded_uri = metadata.get('last_uploaded_uri', None)
local_last_uploaded_uri = self._db.get_last_uploaded_uri(relpath_u)
print ">>>> if %r != %r" % (dmd_last_uploaded_uri, local_last_uploaded_uri)
if dmd_last_uploaded_uri is not None and dmd_last_uploaded_uri != local_last_uploaded_uri:
print ">>>> if %r != %r" % (dmd_last_uploaded_uri, db_entry.last_uploaded_uri)
if dmd_last_uploaded_uri is not None and dmd_last_uploaded_uri != db_entry.last_uploaded_uri:
is_conflict = True
self._count('objects_conflicted')
else:

69
src/allmydata/magicfolderdb.py
View File

@ -1,5 +1,6 @@
import sys
from collections import namedtuple
from allmydata.util.dbutil import get_db, DBError
@ -42,6 +43,7 @@ def get_magicfolderdb(dbfile, stderr=sys.stderr,
print >>stderr, e
return None
PathEntry = namedtuple('PathEntry', 'size mtime ctime version last_uploaded_uri last_downloaded_uri last_downloaded_timestamp')
class MagicFolderDB(object):
VERSION = 1
@ -51,20 +53,25 @@ class MagicFolderDB(object):
self.connection = connection
self.cursor = connection.cursor()
def check_file_db_exists(self, path):
"""I will tell you if a given file has an entry in my database or not
by returning True or False.
def get_db_entry(self, relpath_u):
"""
Retrieve the entry in the database for a given path, or return None
if there is no such entry.
"""
c = self.cursor
c.execute("SELECT size,mtime,ctime"
c.execute("SELECT size, mtime, ctime, version, last_uploaded_uri, last_downloaded_uri, last_downloaded_timestamp"
" FROM local_files"
" WHERE path=?",
(path,))
(relpath_u,))
row = self.cursor.fetchone()
if not row:
return False
return None
else:
return True
(size, mtime, ctime, version, last_uploaded_uri, last_downloaded_uri, last_downloaded_timestamp) = row
return PathEntry(size=size, mtime=mtime, ctime=ctime, version=version,
last_uploaded_uri=last_uploaded_uri,
last_downloaded_uri=last_downloaded_uri,
last_downloaded_timestamp=last_downloaded_timestamp)
def get_all_relpaths(self):
"""
@ -75,54 +82,6 @@ class MagicFolderDB(object):
rows = self.cursor.fetchall()
return set([r[0] for r in rows])
def get_last_downloaded_uri(self, relpath_u):
"""
Return the last downloaded uri recorded in the magic folder db.
If none are found then return None.
"""
c = self.cursor
c.execute("SELECT last_downloaded_uri"
" FROM local_files"
" WHERE path=?",
(relpath_u,))
row = self.cursor.fetchone()
if not row:
return None
else:
return row[0]
def get_last_uploaded_uri(self, relpath_u):
"""
Return the last downloaded uri recorded in the magic folder db.
If none are found then return None.
"""
c = self.cursor
c.execute("SELECT last_uploaded_uri"
" FROM local_files"
" WHERE path=?",
(relpath_u,))
row = self.cursor.fetchone()
if not row:
return None
else:
return row[0]
def get_local_file_version(self, relpath_u):
"""
Return the version of a local file tracked by our magic folder db.
If no db entry is found then return None.
"""
c = self.cursor
c.execute("SELECT version"
" FROM local_files"
" WHERE path=?",
(relpath_u,))
row = self.cursor.fetchone()
if not row:
return None
else:
return row[0]
def did_upload_version(self, relpath_u, version, last_uploaded_uri, last_downloaded_uri, last_downloaded_timestamp, pathinfo):
print "%r.did_upload_version(%r, %r, %r, %r, %r, %r)" % (self, relpath_u, version, last_uploaded_uri, last_downloaded_uri, last_downloaded_timestamp, pathinfo)
try: