root / snf-pithos-backend / pithos / backends / lib / sqlalchemy / node.py @ 876d7486
History | View | Annotate | Download (49.4 kB)
1 |
# Copyright 2011-2012 GRNET S.A. All rights reserved.
|
---|---|
2 |
#
|
3 |
# Redistribution and use in source and binary forms, with or
|
4 |
# without modification, are permitted provided that the following
|
5 |
# conditions are met:
|
6 |
#
|
7 |
# 1. Redistributions of source code must retain the above
|
8 |
# copyright notice, this list of conditions and the following
|
9 |
# disclaimer.
|
10 |
#
|
11 |
# 2. Redistributions in binary form must reproduce the above
|
12 |
# copyright notice, this list of conditions and the following
|
13 |
# disclaimer in the documentation and/or other materials
|
14 |
# provided with the distribution.
|
15 |
#
|
16 |
# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
|
17 |
# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
18 |
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
19 |
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
|
20 |
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
21 |
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
22 |
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
23 |
# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
24 |
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
25 |
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
26 |
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
27 |
# POSSIBILITY OF SUCH DAMAGE.
|
28 |
#
|
29 |
# The views and conclusions contained in the software and
|
30 |
# documentation are those of the authors and should not be
|
31 |
# interpreted as representing official policies, either expressed
|
32 |
# or implied, of GRNET S.A.
|
33 |
|
34 |
from time import time |
35 |
from operator import itemgetter |
36 |
from itertools import groupby |
37 |
|
38 |
from sqlalchemy import (Table, Integer, BigInteger, DECIMAL, Boolean, |
39 |
Column, String, MetaData, ForeignKey) |
40 |
from sqlalchemy.schema import Index |
41 |
from sqlalchemy.sql import func, and_, or_, not_, select, bindparam, exists |
42 |
from sqlalchemy.exc import NoSuchTableError |
43 |
|
44 |
from dbworker import DBWorker, ESCAPE_CHAR |
45 |
|
46 |
from pithos.backends.filter import parse_filters |
47 |
|
48 |
|
49 |
ROOTNODE = 0
|
50 |
|
51 |
(SERIAL, NODE, HASH, SIZE, TYPE, SOURCE, MTIME, MUSER, UUID, CHECKSUM, |
52 |
CLUSTER, AVAILABLE, MAP_CHECK_TIMESTAMP) = range(13) |
53 |
|
54 |
(MATCH_PREFIX, MATCH_EXACT) = range(2) |
55 |
|
56 |
inf = float('inf') |
57 |
|
58 |
|
59 |
def strnextling(prefix): |
60 |
"""Return the first unicode string
|
61 |
greater than but not starting with given prefix.
|
62 |
strnextling('hello') -> 'hellp'
|
63 |
"""
|
64 |
if not prefix: |
65 |
## all strings start with the null string,
|
66 |
## therefore we have to approximate strnextling('')
|
67 |
## with the last unicode character supported by python
|
68 |
## 0x10ffff for wide (32-bit unicode) python builds
|
69 |
## 0x00ffff for narrow (16-bit unicode) python builds
|
70 |
## We will not autodetect. 0xffff is safe enough.
|
71 |
return unichr(0xffff) |
72 |
s = prefix[:-1]
|
73 |
c = ord(prefix[-1]) |
74 |
if c >= 0xffff: |
75 |
raise RuntimeError |
76 |
s += unichr(c + 1) |
77 |
return s
|
78 |
|
79 |
|
80 |
def strprevling(prefix): |
81 |
"""Return an approximation of the last unicode string
|
82 |
less than but not starting with given prefix.
|
83 |
strprevling(u'hello') -> u'helln\\xffff'
|
84 |
"""
|
85 |
if not prefix: |
86 |
## There is no prevling for the null string
|
87 |
return prefix
|
88 |
s = prefix[:-1]
|
89 |
c = ord(prefix[-1]) |
90 |
if c > 0: |
91 |
s += unichr(c - 1) + unichr(0xffff) |
92 |
return s
|
93 |
|
94 |
_propnames = { |
95 |
'serial': 0, |
96 |
'node': 1, |
97 |
'hash': 2, |
98 |
'size': 3, |
99 |
'type': 4, |
100 |
'source': 5, |
101 |
'mtime': 6, |
102 |
'muser': 7, |
103 |
'uuid': 8, |
104 |
'checksum': 9, |
105 |
'cluster': 10, |
106 |
'available':11, |
107 |
'map_check_timestamp':12 |
108 |
} |
109 |
|
110 |
|
111 |
def create_tables(engine): |
112 |
metadata = MetaData() |
113 |
|
114 |
#create nodes table
|
115 |
columns = [] |
116 |
columns.append(Column('node', Integer, primary_key=True)) |
117 |
columns.append(Column('parent', Integer,
|
118 |
ForeignKey('nodes.node',
|
119 |
ondelete='CASCADE',
|
120 |
onupdate='CASCADE'),
|
121 |
autoincrement=False))
|
122 |
columns.append(Column('latest_version', Integer))
|
123 |
columns.append(Column('path', String(2048), default='', nullable=False)) |
124 |
nodes = Table('nodes', metadata, *columns, mysql_engine='InnoDB') |
125 |
Index('idx_nodes_path', nodes.c.path, unique=True) |
126 |
Index('idx_nodes_parent', nodes.c.parent)
|
127 |
|
128 |
#create policy table
|
129 |
columns = [] |
130 |
columns.append(Column('node', Integer,
|
131 |
ForeignKey('nodes.node',
|
132 |
ondelete='CASCADE',
|
133 |
onupdate='CASCADE'),
|
134 |
primary_key=True))
|
135 |
columns.append(Column('key', String(128), primary_key=True)) |
136 |
columns.append(Column('value', String(256))) |
137 |
Table('policy', metadata, *columns, mysql_engine='InnoDB') |
138 |
|
139 |
#create statistics table
|
140 |
columns = [] |
141 |
columns.append(Column('node', Integer,
|
142 |
ForeignKey('nodes.node',
|
143 |
ondelete='CASCADE',
|
144 |
onupdate='CASCADE'),
|
145 |
primary_key=True))
|
146 |
columns.append(Column('population', Integer, nullable=False, default=0)) |
147 |
columns.append(Column('size', BigInteger, nullable=False, default=0)) |
148 |
columns.append(Column('mtime', DECIMAL(precision=16, scale=6))) |
149 |
columns.append(Column('cluster', Integer, nullable=False, default=0, |
150 |
primary_key=True, autoincrement=False)) |
151 |
Table('statistics', metadata, *columns, mysql_engine='InnoDB') |
152 |
|
153 |
#create versions table
|
154 |
columns = [] |
155 |
columns.append(Column('serial', Integer, primary_key=True)) |
156 |
columns.append(Column('node', Integer,
|
157 |
ForeignKey('nodes.node',
|
158 |
ondelete='CASCADE',
|
159 |
onupdate='CASCADE')))
|
160 |
columns.append(Column('hash', String(256))) |
161 |
columns.append(Column('size', BigInteger, nullable=False, default=0)) |
162 |
columns.append(Column('type', String(256), nullable=False, default='')) |
163 |
columns.append(Column('source', Integer))
|
164 |
columns.append(Column('mtime', DECIMAL(precision=16, scale=6))) |
165 |
columns.append(Column('muser', String(256), nullable=False, default='')) |
166 |
columns.append(Column('uuid', String(64), nullable=False, default='')) |
167 |
columns.append(Column('checksum', String(256), nullable=False, default='')) |
168 |
columns.append(Column('cluster', Integer, nullable=False, default=0)) |
169 |
columns.append(Column('available', Boolean, nullable=False, default=True)) |
170 |
columns.append(Column('map_check_timestamp', DECIMAL(precision=16, |
171 |
scale=6)))
|
172 |
versions = Table('versions', metadata, *columns, mysql_engine='InnoDB') |
173 |
Index('idx_versions_node_mtime', versions.c.node, versions.c.mtime)
|
174 |
Index('idx_versions_node_uuid', versions.c.uuid)
|
175 |
|
176 |
#create attributes table
|
177 |
columns = [] |
178 |
columns.append(Column('serial', Integer,
|
179 |
ForeignKey('versions.serial',
|
180 |
ondelete='CASCADE',
|
181 |
onupdate='CASCADE'),
|
182 |
primary_key=True))
|
183 |
columns.append(Column('domain', String(256), primary_key=True)) |
184 |
columns.append(Column('key', String(128), primary_key=True)) |
185 |
columns.append(Column('value', String(256))) |
186 |
columns.append(Column('node', Integer, nullable=False, default=0)) |
187 |
columns.append(Column('is_latest', Boolean, nullable=False, default=True)) |
188 |
attributes = Table('attributes', metadata, *columns, mysql_engine='InnoDB') |
189 |
Index('idx_attributes_domain', attributes.c.domain)
|
190 |
Index('idx_attributes_serial_node', attributes.c.serial, attributes.c.node)
|
191 |
|
192 |
metadata.create_all(engine) |
193 |
return metadata.sorted_tables
|
194 |
|
195 |
|
196 |
class Node(DBWorker): |
197 |
"""Nodes store path organization and have multiple versions.
|
198 |
Versions store object history and have multiple attributes.
|
199 |
Attributes store metadata.
|
200 |
"""
|
201 |
|
202 |
# TODO: Provide an interface for included and excluded clusters.
|
203 |
|
204 |
def __init__(self, **params): |
205 |
DBWorker.__init__(self, **params)
|
206 |
try:
|
207 |
metadata = MetaData(self.engine)
|
208 |
self.nodes = Table('nodes', metadata, autoload=True) |
209 |
self.policy = Table('policy', metadata, autoload=True) |
210 |
self.statistics = Table('statistics', metadata, autoload=True) |
211 |
self.versions = Table('versions', metadata, autoload=True) |
212 |
self.attributes = Table('attributes', metadata, autoload=True) |
213 |
except NoSuchTableError:
|
214 |
tables = create_tables(self.engine)
|
215 |
map(lambda t: self.__setattr__(t.name, t), tables) |
216 |
|
217 |
s = self.nodes.select().where(and_(self.nodes.c.node == ROOTNODE, |
218 |
self.nodes.c.parent == ROOTNODE))
|
219 |
wrapper = self.wrapper
|
220 |
wrapper.execute() |
221 |
try:
|
222 |
rp = self.conn.execute(s)
|
223 |
r = rp.fetchone() |
224 |
rp.close() |
225 |
if not r: |
226 |
s = self.nodes.insert(
|
227 |
).values(node=ROOTNODE, parent=ROOTNODE, path='')
|
228 |
self.conn.execute(s)
|
229 |
finally:
|
230 |
wrapper.commit() |
231 |
|
232 |
def node_create(self, parent, path): |
233 |
"""Create a new node from the given properties.
|
234 |
Return the node identifier of the new node.
|
235 |
"""
|
236 |
#TODO catch IntegrityError?
|
237 |
s = self.nodes.insert().values(parent=parent, path=path)
|
238 |
r = self.conn.execute(s)
|
239 |
inserted_primary_key = r.inserted_primary_key[0]
|
240 |
r.close() |
241 |
return inserted_primary_key
|
242 |
|
243 |
def node_lookup(self, path, for_update=False): |
244 |
"""Lookup the current node of the given path.
|
245 |
Return None if the path is not found.
|
246 |
"""
|
247 |
|
248 |
# Use LIKE for comparison to avoid MySQL problems with trailing spaces.
|
249 |
s = select([self.nodes.c.node],
|
250 |
self.nodes.c.path.like(self.escape_like(path), |
251 |
escape=ESCAPE_CHAR), |
252 |
for_update=for_update) |
253 |
r = self.conn.execute(s)
|
254 |
row = r.fetchone() |
255 |
r.close() |
256 |
if row:
|
257 |
return row[0] |
258 |
return None |
259 |
|
260 |
def node_lookup_bulk(self, paths): |
261 |
"""Lookup the current nodes for the given paths.
|
262 |
Return () if the path is not found.
|
263 |
"""
|
264 |
|
265 |
if not paths: |
266 |
return ()
|
267 |
# Use LIKE for comparison to avoid MySQL problems with trailing spaces.
|
268 |
s = select([self.nodes.c.node], self.nodes.c.path.in_(paths)) |
269 |
r = self.conn.execute(s)
|
270 |
rows = r.fetchall() |
271 |
r.close() |
272 |
return [row[0] for row in rows] |
273 |
|
274 |
def node_get_properties(self, node): |
275 |
"""Return the node's (parent, path).
|
276 |
Return None if the node is not found.
|
277 |
"""
|
278 |
|
279 |
s = select([self.nodes.c.parent, self.nodes.c.path]) |
280 |
s = s.where(self.nodes.c.node == node)
|
281 |
r = self.conn.execute(s)
|
282 |
l = r.fetchone() |
283 |
r.close() |
284 |
return l
|
285 |
|
286 |
def node_get_versions(self, node, keys=(), propnames=_propnames): |
287 |
"""Return the properties of all versions at node.
|
288 |
If keys is empty, return all properties in the order
|
289 |
(serial, node, hash, size, type, source, mtime, muser, uuid,
|
290 |
checksum, cluster, available, map_check_timestamp).
|
291 |
"""
|
292 |
|
293 |
s = select([self.versions.c.serial,
|
294 |
self.versions.c.node,
|
295 |
self.versions.c.hash,
|
296 |
self.versions.c.size,
|
297 |
self.versions.c.type,
|
298 |
self.versions.c.source,
|
299 |
self.versions.c.mtime,
|
300 |
self.versions.c.muser,
|
301 |
self.versions.c.uuid,
|
302 |
self.versions.c.checksum,
|
303 |
self.versions.c.cluster,
|
304 |
self.versions.c.available,
|
305 |
self.versions.c.map_check_timestamp],
|
306 |
self.versions.c.node == node)
|
307 |
s = s.order_by(self.versions.c.serial)
|
308 |
r = self.conn.execute(s)
|
309 |
rows = r.fetchall() |
310 |
r.close() |
311 |
if not rows: |
312 |
return rows
|
313 |
|
314 |
if not keys: |
315 |
return rows
|
316 |
|
317 |
return [[p[propnames[k]] for k in keys if k in propnames] for |
318 |
p in rows]
|
319 |
|
320 |
def node_count_children(self, node): |
321 |
"""Return node's child count."""
|
322 |
|
323 |
s = select([func.count(self.nodes.c.node)])
|
324 |
s = s.where(and_(self.nodes.c.parent == node,
|
325 |
self.nodes.c.node != ROOTNODE))
|
326 |
r = self.conn.execute(s)
|
327 |
row = r.fetchone() |
328 |
r.close() |
329 |
return row[0] |
330 |
|
331 |
def node_purge_children(self, parent, before=inf, cluster=0, |
332 |
update_statistics_ancestors_depth=None):
|
333 |
"""Delete all versions with the specified
|
334 |
parent and cluster, and return
|
335 |
the hashes, the total size and the serials of versions deleted.
|
336 |
Clears out nodes with no remaining versions.
|
337 |
"""
|
338 |
#update statistics
|
339 |
c1 = select([self.nodes.c.node],
|
340 |
self.nodes.c.parent == parent)
|
341 |
where_clause = and_(self.versions.c.node.in_(c1),
|
342 |
self.versions.c.cluster == cluster)
|
343 |
if before != inf:
|
344 |
where_clause = and_(where_clause, |
345 |
self.versions.c.mtime <= before)
|
346 |
s = select([func.count(self.versions.c.serial),
|
347 |
func.sum(self.versions.c.size)])
|
348 |
s = s.where(where_clause) |
349 |
r = self.conn.execute(s)
|
350 |
row = r.fetchone() |
351 |
r.close() |
352 |
if not row: |
353 |
return (), 0, () |
354 |
nr, size = row[0], row[1] if row[1] else 0 |
355 |
mtime = time() |
356 |
self.statistics_update(parent, -nr, -size, mtime, cluster)
|
357 |
self.statistics_update_ancestors(parent, -nr, -size, mtime, cluster,
|
358 |
update_statistics_ancestors_depth) |
359 |
|
360 |
s = select([self.versions.c.hash, self.versions.c.serial]) |
361 |
s = s.where(where_clause) |
362 |
r = self.conn.execute(s)
|
363 |
hashes = [] |
364 |
serials = [] |
365 |
for row in r.fetchall(): |
366 |
hashes += [row[0]]
|
367 |
serials += [row[1]]
|
368 |
r.close() |
369 |
|
370 |
#delete versions
|
371 |
s = self.versions.delete().where(where_clause)
|
372 |
r = self.conn.execute(s)
|
373 |
r.close() |
374 |
|
375 |
#delete nodes
|
376 |
s = select([self.nodes.c.node],
|
377 |
and_(self.nodes.c.parent == parent,
|
378 |
select([func.count(self.versions.c.serial)],
|
379 |
self.versions.c.node == self.nodes.c.node). |
380 |
as_scalar() == 0))
|
381 |
rp = self.conn.execute(s)
|
382 |
nodes = [row[0] for row in rp.fetchall()] |
383 |
rp.close() |
384 |
if nodes:
|
385 |
s = self.nodes.delete().where(self.nodes.c.node.in_(nodes)) |
386 |
self.conn.execute(s).close()
|
387 |
|
388 |
return hashes, size, serials
|
389 |
|
390 |
def node_purge(self, node, before=inf, cluster=0, |
391 |
update_statistics_ancestors_depth=None):
|
392 |
"""Delete all versions with the specified
|
393 |
node and cluster, and return
|
394 |
the hashes and size of versions deleted.
|
395 |
Clears out the node if it has no remaining versions.
|
396 |
"""
|
397 |
|
398 |
#update statistics
|
399 |
s = select([func.count(self.versions.c.serial),
|
400 |
func.sum(self.versions.c.size)])
|
401 |
where_clause = and_(self.versions.c.node == node,
|
402 |
self.versions.c.cluster == cluster)
|
403 |
if before != inf:
|
404 |
where_clause = and_(where_clause, |
405 |
self.versions.c.mtime <= before)
|
406 |
s = s.where(where_clause) |
407 |
r = self.conn.execute(s)
|
408 |
row = r.fetchone() |
409 |
nr, size = row[0], row[1] |
410 |
r.close() |
411 |
if not nr: |
412 |
return (), 0, () |
413 |
mtime = time() |
414 |
self.statistics_update_ancestors(node, -nr, -size, mtime, cluster,
|
415 |
update_statistics_ancestors_depth) |
416 |
|
417 |
s = select([self.versions.c.hash, self.versions.c.serial]) |
418 |
s = s.where(where_clause) |
419 |
r = self.conn.execute(s)
|
420 |
hashes = [] |
421 |
serials = [] |
422 |
for row in r.fetchall(): |
423 |
hashes += [row[0]]
|
424 |
serials += [row[1]]
|
425 |
r.close() |
426 |
|
427 |
#delete versions
|
428 |
s = self.versions.delete().where(where_clause)
|
429 |
r = self.conn.execute(s)
|
430 |
r.close() |
431 |
|
432 |
#delete nodes
|
433 |
s = select([self.nodes.c.node],
|
434 |
and_(self.nodes.c.node == node,
|
435 |
select([func.count(self.versions.c.serial)],
|
436 |
self.versions.c.node == self.nodes.c.node). |
437 |
as_scalar() == 0))
|
438 |
rp = self.conn.execute(s)
|
439 |
nodes = [row[0] for row in rp.fetchall()] |
440 |
rp.close() |
441 |
if nodes:
|
442 |
s = self.nodes.delete().where(self.nodes.c.node.in_(nodes)) |
443 |
self.conn.execute(s).close()
|
444 |
|
445 |
return hashes, size, serials
|
446 |
|
447 |
def node_remove(self, node, update_statistics_ancestors_depth=None): |
448 |
"""Remove the node specified.
|
449 |
Return false if the node has children or is not found.
|
450 |
"""
|
451 |
|
452 |
if self.node_count_children(node): |
453 |
return False |
454 |
|
455 |
mtime = time() |
456 |
s = select([func.count(self.versions.c.serial),
|
457 |
func.sum(self.versions.c.size),
|
458 |
self.versions.c.cluster])
|
459 |
s = s.where(self.versions.c.node == node)
|
460 |
s = s.group_by(self.versions.c.cluster)
|
461 |
r = self.conn.execute(s)
|
462 |
for population, size, cluster in r.fetchall(): |
463 |
self.statistics_update_ancestors(
|
464 |
node, -population, -size, mtime, cluster, |
465 |
update_statistics_ancestors_depth) |
466 |
r.close() |
467 |
|
468 |
s = self.nodes.delete().where(self.nodes.c.node == node) |
469 |
self.conn.execute(s).close()
|
470 |
return True |
471 |
|
472 |
def node_accounts(self, accounts=()): |
473 |
s = select([self.nodes.c.path, self.nodes.c.node]) |
474 |
s = s.where(and_(self.nodes.c.node != 0, |
475 |
self.nodes.c.parent == 0)) |
476 |
if accounts:
|
477 |
s = s.where(self.nodes.c.path.in_(accounts))
|
478 |
r = self.conn.execute(s)
|
479 |
rows = r.fetchall() |
480 |
r.close() |
481 |
return rows
|
482 |
|
483 |
def node_account_quotas(self): |
484 |
s = select([self.nodes.c.path, self.policy.c.value]) |
485 |
s = s.where(and_(self.nodes.c.node != 0, |
486 |
self.nodes.c.parent == 0)) |
487 |
s = s.where(self.nodes.c.node == self.policy.c.node) |
488 |
s = s.where(self.policy.c.key == 'quota') |
489 |
r = self.conn.execute(s)
|
490 |
rows = r.fetchall() |
491 |
r.close() |
492 |
return dict(rows) |
493 |
|
494 |
def node_account_usage(self, account=None, cluster=0): |
495 |
"""Return usage for a specific account.
|
496 |
|
497 |
Keyword arguments:
|
498 |
account -- (default None: list usage for all the accounts)
|
499 |
cluster -- list current, history or deleted usage (default 0: normal)
|
500 |
"""
|
501 |
|
502 |
n1 = self.nodes.alias('n1') |
503 |
n2 = self.nodes.alias('n2') |
504 |
n3 = self.nodes.alias('n3') |
505 |
|
506 |
s = select([n3.c.path, func.sum(self.versions.c.size)])
|
507 |
s = s.where(n1.c.node == self.versions.c.node)
|
508 |
s = s.where(self.versions.c.cluster == cluster)
|
509 |
s = s.where(n1.c.parent == n2.c.node) |
510 |
s = s.where(n2.c.parent == n3.c.node) |
511 |
s = s.where(n3.c.parent == 0)
|
512 |
s = s.where(n3.c.node != 0)
|
513 |
if account:
|
514 |
s = s.where(n3.c.path == account) |
515 |
s = s.group_by(n3.c.path) |
516 |
r = self.conn.execute(s)
|
517 |
usage = r.fetchall() |
518 |
r.close() |
519 |
return dict(usage) |
520 |
|
521 |
def policy_get(self, node): |
522 |
s = select([self.policy.c.key, self.policy.c.value], |
523 |
self.policy.c.node == node)
|
524 |
r = self.conn.execute(s)
|
525 |
d = dict(r.fetchall())
|
526 |
r.close() |
527 |
return d
|
528 |
|
529 |
def policy_set(self, node, policy): |
530 |
#insert or replace
|
531 |
for k, v in policy.iteritems(): |
532 |
s = self.policy.update().where(and_(self.policy.c.node == node, |
533 |
self.policy.c.key == k))
|
534 |
s = s.values(value=v) |
535 |
rp = self.conn.execute(s)
|
536 |
rp.close() |
537 |
if rp.rowcount == 0: |
538 |
s = self.policy.insert()
|
539 |
values = {'node': node, 'key': k, 'value': v} |
540 |
r = self.conn.execute(s, values)
|
541 |
r.close() |
542 |
|
543 |
def statistics_get(self, node, cluster=0): |
544 |
"""Return population, total size and last mtime
|
545 |
for all versions under node that belong to the cluster.
|
546 |
"""
|
547 |
|
548 |
s = select([self.statistics.c.population,
|
549 |
self.statistics.c.size,
|
550 |
self.statistics.c.mtime])
|
551 |
s = s.where(and_(self.statistics.c.node == node,
|
552 |
self.statistics.c.cluster == cluster))
|
553 |
r = self.conn.execute(s)
|
554 |
row = r.fetchone() |
555 |
r.close() |
556 |
return row
|
557 |
|
558 |
def statistics_update(self, node, population, size, mtime, cluster=0): |
559 |
"""Update the statistics of the given node.
|
560 |
Statistics keep track the population, total
|
561 |
size of objects and mtime in the node's namespace.
|
562 |
May be zero or positive or negative numbers.
|
563 |
"""
|
564 |
s = select([self.statistics.c.population, self.statistics.c.size], |
565 |
and_(self.statistics.c.node == node,
|
566 |
self.statistics.c.cluster == cluster))
|
567 |
rp = self.conn.execute(s)
|
568 |
r = rp.fetchone() |
569 |
rp.close() |
570 |
if not r: |
571 |
prepopulation, presize = (0, 0) |
572 |
else:
|
573 |
prepopulation, presize = r |
574 |
population += prepopulation |
575 |
population = max(population, 0) |
576 |
size += presize |
577 |
|
578 |
#insert or replace
|
579 |
#TODO better upsert
|
580 |
u = self.statistics.update().where(and_(
|
581 |
self.statistics.c.node == node,
|
582 |
self.statistics.c.cluster == cluster))
|
583 |
u = u.values(population=population, size=size, mtime=mtime) |
584 |
rp = self.conn.execute(u)
|
585 |
rp.close() |
586 |
if rp.rowcount == 0: |
587 |
ins = self.statistics.insert()
|
588 |
ins = ins.values(node=node, population=population, size=size, |
589 |
mtime=mtime, cluster=cluster) |
590 |
self.conn.execute(ins).close()
|
591 |
|
592 |
def statistics_update_ancestors(self, node, population, size, mtime, |
593 |
cluster=0, recursion_depth=None): |
594 |
"""Update the statistics of the given node's parent.
|
595 |
Then recursively update all parents up to the root
|
596 |
or up to the ``recursion_depth`` (if not None).
|
597 |
Population is not recursive.
|
598 |
"""
|
599 |
|
600 |
i = 0
|
601 |
while True: |
602 |
if node == ROOTNODE:
|
603 |
break
|
604 |
if recursion_depth and recursion_depth <= i: |
605 |
break
|
606 |
props = self.node_get_properties(node)
|
607 |
if props is None: |
608 |
break
|
609 |
parent, path = props |
610 |
self.statistics_update(parent, population, size, mtime, cluster)
|
611 |
node = parent |
612 |
population = 0 # Population isn't recursive |
613 |
i += 1
|
614 |
|
615 |
def statistics_latest(self, node, before=inf, except_cluster=0): |
616 |
"""Return population, total size and last mtime
|
617 |
for all latest versions under node that
|
618 |
do not belong to the cluster.
|
619 |
"""
|
620 |
|
621 |
# The node.
|
622 |
props = self.node_get_properties(node)
|
623 |
if props is None: |
624 |
return None |
625 |
parent, path = props |
626 |
|
627 |
# The latest version.
|
628 |
s = select([self.versions.c.serial,
|
629 |
self.versions.c.node,
|
630 |
self.versions.c.hash,
|
631 |
self.versions.c.size,
|
632 |
self.versions.c.type,
|
633 |
self.versions.c.source,
|
634 |
self.versions.c.mtime,
|
635 |
self.versions.c.muser,
|
636 |
self.versions.c.uuid,
|
637 |
self.versions.c.checksum,
|
638 |
self.versions.c.cluster])
|
639 |
if before != inf:
|
640 |
filtered = select([func.max(self.versions.c.serial)],
|
641 |
self.versions.c.node == node)
|
642 |
filtered = filtered.where(self.versions.c.mtime < before)
|
643 |
else:
|
644 |
filtered = select([self.nodes.c.latest_version],
|
645 |
self.nodes.c.node == node)
|
646 |
s = s.where(and_(self.versions.c.cluster != except_cluster,
|
647 |
self.versions.c.serial == filtered))
|
648 |
r = self.conn.execute(s)
|
649 |
props = r.fetchone() |
650 |
r.close() |
651 |
if not props: |
652 |
return None |
653 |
mtime = props[MTIME] |
654 |
|
655 |
# First level, just under node (get population).
|
656 |
v = self.versions.alias('v') |
657 |
s = select([func.count(v.c.serial), |
658 |
func.sum(v.c.size), |
659 |
func.max(v.c.mtime)]) |
660 |
if before != inf:
|
661 |
c1 = select([func.max(self.versions.c.serial)],
|
662 |
and_(self.versions.c.mtime < before,
|
663 |
self.versions.c.node == v.c.node))
|
664 |
else:
|
665 |
c1 = select([self.nodes.c.latest_version])
|
666 |
c1 = c1.where(self.nodes.c.node == v.c.node)
|
667 |
c2 = select([self.nodes.c.node], self.nodes.c.parent == node) |
668 |
s = s.where(and_(v.c.serial == c1, |
669 |
v.c.cluster != except_cluster, |
670 |
v.c.node.in_(c2))) |
671 |
rp = self.conn.execute(s)
|
672 |
r = rp.fetchone() |
673 |
rp.close() |
674 |
if not r: |
675 |
return None |
676 |
count = r[0]
|
677 |
mtime = max(mtime, r[2]) |
678 |
if count == 0: |
679 |
return (0, 0, mtime) |
680 |
|
681 |
# All children (get size and mtime).
|
682 |
# This is why the full path is stored.
|
683 |
if before != inf:
|
684 |
s = select([func.count(v.c.serial), |
685 |
func.sum(v.c.size), |
686 |
func.max(v.c.mtime)]) |
687 |
c1 = select([func.max(self.versions.c.serial)],
|
688 |
and_(self.versions.c.mtime < before,
|
689 |
self.versions.c.node == v.c.node))
|
690 |
else:
|
691 |
inner_join = \ |
692 |
self.versions.join(self.nodes, onclause= |
693 |
self.versions.c.serial ==
|
694 |
self.nodes.c.latest_version)
|
695 |
s = select([func.count(self.versions.c.serial),
|
696 |
func.sum(self.versions.c.size),
|
697 |
func.max(self.versions.c.mtime)],
|
698 |
from_obj=[inner_join]) |
699 |
|
700 |
c2 = select([self.nodes.c.node],
|
701 |
self.nodes.c.path.like(self.escape_like(path) + '%', |
702 |
escape=ESCAPE_CHAR)) |
703 |
if before != inf:
|
704 |
s = s.where(and_(v.c.serial == c1, |
705 |
v.c.cluster != except_cluster, |
706 |
v.c.node.in_(c2))) |
707 |
else:
|
708 |
s = s.where(and_(self.versions.c.cluster != except_cluster,
|
709 |
self.versions.c.node.in_(c2)))
|
710 |
|
711 |
rp = self.conn.execute(s)
|
712 |
r = rp.fetchone() |
713 |
rp.close() |
714 |
if not r: |
715 |
return None |
716 |
size = long(r[1] - props[SIZE]) |
717 |
mtime = max(mtime, r[2]) |
718 |
return (count, size, mtime)
|
719 |
|
720 |
def nodes_set_latest_version(self, node, serial): |
721 |
s = self.nodes.update().where(self.nodes.c.node == node) |
722 |
s = s.values(latest_version=serial) |
723 |
self.conn.execute(s).close()
|
724 |
|
725 |
def version_create(self, node, hash, size, type, source, muser, uuid, |
726 |
checksum, cluster=0,
|
727 |
update_statistics_ancestors_depth=None,
|
728 |
available=True):
|
729 |
"""Create a new version from the given properties.
|
730 |
Return the (serial, mtime) of the new version.
|
731 |
"""
|
732 |
|
733 |
mtime = time() |
734 |
s = self.versions.insert().values(
|
735 |
node=node, hash=hash, size=size, type=type, source=source, |
736 |
mtime=mtime, muser=muser, uuid=uuid, checksum=checksum, |
737 |
cluster=cluster, available=available) |
738 |
serial = self.conn.execute(s).inserted_primary_key[0] |
739 |
self.statistics_update_ancestors(node, 1, size, mtime, cluster, |
740 |
update_statistics_ancestors_depth) |
741 |
|
742 |
self.nodes_set_latest_version(node, serial)
|
743 |
|
744 |
return serial, mtime
|
745 |
|
746 |
def version_lookup(self, node, before=inf, cluster=0, all_props=True): |
747 |
"""Lookup the current version of the given node.
|
748 |
Return a list with its properties:
|
749 |
(serial, node, hash, size, type, source, mtime,
|
750 |
muser, uuid, checksum, cluster, available, map_check_timestamp)
|
751 |
or None if the current version is not found in the given cluster.
|
752 |
"""
|
753 |
|
754 |
v = self.versions.alias('v') |
755 |
if not all_props: |
756 |
s = select([v.c.serial]) |
757 |
else:
|
758 |
s = select([v.c.serial, v.c.node, v.c.hash, |
759 |
v.c.size, v.c.type, v.c.source, |
760 |
v.c.mtime, v.c.muser, v.c.uuid, |
761 |
v.c.checksum, v.c.cluster, |
762 |
v.c.available, v.c.map_check_timestamp]) |
763 |
if before != inf:
|
764 |
c = select([func.max(self.versions.c.serial)],
|
765 |
self.versions.c.node == node)
|
766 |
c = c.where(self.versions.c.mtime < before)
|
767 |
else:
|
768 |
c = select([self.nodes.c.latest_version],
|
769 |
self.nodes.c.node == node)
|
770 |
s = s.where(and_(v.c.serial == c, |
771 |
v.c.cluster == cluster)) |
772 |
r = self.conn.execute(s)
|
773 |
props = r.fetchone() |
774 |
r.close() |
775 |
if props:
|
776 |
return props
|
777 |
return None |
778 |
|
779 |
def version_lookup_bulk(self, nodes, before=inf, cluster=0, |
780 |
all_props=True, order_by_path=False): |
781 |
"""Lookup the current versions of the given nodes.
|
782 |
Return a list with their properties:
|
783 |
(serial, node, hash, size, type, source, mtime, muser, uuid,
|
784 |
checksum, cluster, available, map_check_timestamp).
|
785 |
"""
|
786 |
if not nodes: |
787 |
return ()
|
788 |
v = self.versions.alias('v') |
789 |
n = self.nodes.alias('n') |
790 |
if not all_props: |
791 |
s = select([v.c.serial]) |
792 |
else:
|
793 |
s = select([v.c.serial, v.c.node, v.c.hash, |
794 |
v.c.size, v.c.type, v.c.source, |
795 |
v.c.mtime, v.c.muser, v.c.uuid, |
796 |
v.c.checksum, v.c.cluster, |
797 |
v.c.available, v.c.map_check_timestamp]) |
798 |
if before != inf:
|
799 |
c = select([func.max(self.versions.c.serial)],
|
800 |
self.versions.c.node.in_(nodes))
|
801 |
c = c.where(self.versions.c.mtime < before)
|
802 |
c = c.group_by(self.versions.c.node)
|
803 |
else:
|
804 |
c = select([self.nodes.c.latest_version],
|
805 |
self.nodes.c.node.in_(nodes))
|
806 |
s = s.where(and_(v.c.serial.in_(c), |
807 |
v.c.cluster == cluster)) |
808 |
if order_by_path:
|
809 |
s = s.where(v.c.node == n.c.node) |
810 |
s = s.order_by(n.c.path) |
811 |
else:
|
812 |
s = s.order_by(v.c.node) |
813 |
r = self.conn.execute(s)
|
814 |
rproxy = r.fetchall() |
815 |
r.close() |
816 |
return (tuple(row.values()) for row in rproxy) |
817 |
|
818 |
def version_get_properties(self, serial, keys=(), propnames=_propnames, |
819 |
node=None):
|
820 |
"""Return a sequence of values for the properties of
|
821 |
the version specified by serial and the keys, in the order given.
|
822 |
If keys is empty, return all properties in the order
|
823 |
(serial, node, hash, size, type, source, mtime, muser, uuid,
|
824 |
checksum, cluster, available, map_check_timestamp).
|
825 |
"""
|
826 |
|
827 |
v = self.versions.alias()
|
828 |
s = select([v.c.serial, v.c.node, v.c.hash, |
829 |
v.c.size, v.c.type, v.c.source, |
830 |
v.c.mtime, v.c.muser, v.c.uuid, |
831 |
v.c.checksum, v.c.cluster, |
832 |
v.c.available, v.c.map_check_timestamp], |
833 |
v.c.serial == serial) |
834 |
if node is not None: |
835 |
s = s.where(v.c.node == node) |
836 |
rp = self.conn.execute(s)
|
837 |
r = rp.fetchone() |
838 |
rp.close() |
839 |
if r is None: |
840 |
return r
|
841 |
|
842 |
if not keys: |
843 |
return r
|
844 |
return [r[propnames[k]] for k in keys if k in propnames] |
845 |
|
846 |
def version_put_property(self, serial, key, value): |
847 |
"""Set value for the property of version specified by key."""
|
848 |
|
849 |
if key not in _propnames: |
850 |
return
|
851 |
s = self.versions.update()
|
852 |
s = s.where(self.versions.c.serial == serial)
|
853 |
s = s.values(**{key: value}) |
854 |
self.conn.execute(s).close()
|
855 |
|
856 |
def version_recluster(self, serial, cluster, |
857 |
update_statistics_ancestors_depth=None):
|
858 |
"""Move the version into another cluster."""
|
859 |
|
860 |
props = self.version_get_properties(serial)
|
861 |
if not props: |
862 |
return
|
863 |
node = props[NODE] |
864 |
size = props[SIZE] |
865 |
oldcluster = props[CLUSTER] |
866 |
if cluster == oldcluster:
|
867 |
return
|
868 |
|
869 |
mtime = time() |
870 |
self.statistics_update_ancestors(node, -1, -size, mtime, oldcluster, |
871 |
update_statistics_ancestors_depth) |
872 |
self.statistics_update_ancestors(node, 1, size, mtime, cluster, |
873 |
update_statistics_ancestors_depth) |
874 |
|
875 |
s = self.versions.update()
|
876 |
s = s.where(self.versions.c.serial == serial)
|
877 |
s = s.values(cluster=cluster) |
878 |
self.conn.execute(s).close()
|
879 |
|
880 |
def version_remove(self, serial, update_statistics_ancestors_depth=None): |
881 |
"""Remove the serial specified."""
|
882 |
|
883 |
props = self.version_get_properties(serial)
|
884 |
if not props: |
885 |
return
|
886 |
node = props[NODE] |
887 |
hash = props[HASH] |
888 |
size = props[SIZE] |
889 |
cluster = props[CLUSTER] |
890 |
|
891 |
mtime = time() |
892 |
self.statistics_update_ancestors(node, -1, -size, mtime, cluster, |
893 |
update_statistics_ancestors_depth) |
894 |
|
895 |
s = self.versions.delete().where(self.versions.c.serial == serial) |
896 |
self.conn.execute(s).close()
|
897 |
|
898 |
props = self.version_lookup(node, cluster=cluster, all_props=False) |
899 |
if props:
|
900 |
self.nodes_set_latest_version(node, serial)
|
901 |
|
902 |
return hash, size |
903 |
|
904 |
def attribute_get(self, serial, domain, keys=()): |
905 |
"""Return a list of (key, value) pairs of the specific version.
|
906 |
|
907 |
If keys is empty, return all attributes.
|
908 |
Othwerise, return only those specified.
|
909 |
"""
|
910 |
|
911 |
if keys:
|
912 |
attrs = self.attributes.alias()
|
913 |
s = select([attrs.c.key, attrs.c.value]) |
914 |
s = s.where(and_(attrs.c.key.in_(keys), |
915 |
attrs.c.serial == serial, |
916 |
attrs.c.domain == domain)) |
917 |
else:
|
918 |
attrs = self.attributes.alias()
|
919 |
s = select([attrs.c.key, attrs.c.value]) |
920 |
s = s.where(and_(attrs.c.serial == serial, |
921 |
attrs.c.domain == domain)) |
922 |
r = self.conn.execute(s)
|
923 |
l = r.fetchall() |
924 |
r.close() |
925 |
return l
|
926 |
|
927 |
def attribute_set(self, serial, domain, node, items, is_latest=True): |
928 |
"""Set the attributes of the version specified by serial.
|
929 |
Receive attributes as an iterable of (key, value) pairs.
|
930 |
"""
|
931 |
#insert or replace
|
932 |
#TODO better upsert
|
933 |
for k, v in items: |
934 |
s = self.attributes.update()
|
935 |
s = s.where(and_(self.attributes.c.serial == serial,
|
936 |
self.attributes.c.domain == domain,
|
937 |
self.attributes.c.key == k))
|
938 |
s = s.values(value=v) |
939 |
rp = self.conn.execute(s)
|
940 |
rp.close() |
941 |
if rp.rowcount == 0: |
942 |
s = self.attributes.insert()
|
943 |
s = s.values(serial=serial, domain=domain, node=node, |
944 |
is_latest=is_latest, key=k, value=v) |
945 |
self.conn.execute(s).close()
|
946 |
|
947 |
def attribute_del(self, serial, domain, keys=()): |
948 |
"""Delete attributes of the version specified by serial.
|
949 |
If keys is empty, delete all attributes.
|
950 |
Otherwise delete those specified.
|
951 |
"""
|
952 |
|
953 |
if keys:
|
954 |
#TODO more efficient way to do this?
|
955 |
for key in keys: |
956 |
s = self.attributes.delete()
|
957 |
s = s.where(and_(self.attributes.c.serial == serial,
|
958 |
self.attributes.c.domain == domain,
|
959 |
self.attributes.c.key == key))
|
960 |
self.conn.execute(s).close()
|
961 |
else:
|
962 |
s = self.attributes.delete()
|
963 |
s = s.where(and_(self.attributes.c.serial == serial,
|
964 |
self.attributes.c.domain == domain))
|
965 |
self.conn.execute(s).close()
|
966 |
|
967 |
def attribute_copy(self, source, dest): |
968 |
s = select( |
969 |
[dest, self.attributes.c.domain, self.attributes.c.node, |
970 |
self.attributes.c.key, self.attributes.c.value], |
971 |
self.attributes.c.serial == source)
|
972 |
rp = self.conn.execute(s)
|
973 |
attributes = rp.fetchall() |
974 |
rp.close() |
975 |
for dest, domain, node, k, v in attributes: |
976 |
select_src_node = select( |
977 |
[self.versions.c.node],
|
978 |
self.versions.c.serial == dest)
|
979 |
# insert or replace
|
980 |
s = self.attributes.update().where(and_(
|
981 |
self.attributes.c.serial == dest,
|
982 |
self.attributes.c.domain == domain,
|
983 |
self.attributes.c.key == k))
|
984 |
s = s.values(node=select_src_node, value=v) |
985 |
rp = self.conn.execute(s)
|
986 |
rp.close() |
987 |
if rp.rowcount == 0: |
988 |
s = self.attributes.insert()
|
989 |
s = s.values(serial=dest, domain=domain, node=select_src_node, |
990 |
is_latest=True, key=k, value=v)
|
991 |
self.conn.execute(s).close()
|
992 |
|
993 |
def attribute_unset_is_latest(self, node, exclude): |
994 |
u = self.attributes.update().where(and_(
|
995 |
self.attributes.c.node == node,
|
996 |
self.attributes.c.serial != exclude)).values({'is_latest': False}) |
997 |
self.conn.execute(u)
|
998 |
|
999 |
def latest_attribute_keys(self, parent, domain, before=inf, |
1000 |
except_cluster=0, pathq=None): |
1001 |
"""Return a list with all keys pairs defined
|
1002 |
for all latest versions under parent that
|
1003 |
do not belong to the cluster.
|
1004 |
"""
|
1005 |
|
1006 |
pathq = pathq or []
|
1007 |
|
1008 |
# TODO: Use another table to store before=inf results.
|
1009 |
v = self.versions.alias('v') |
1010 |
s = select([self.attributes.c.key]).distinct()
|
1011 |
if before != inf:
|
1012 |
filtered = select([func.max(v.c.serial)], |
1013 |
and_(v.c.mtime < before, |
1014 |
v.c.node == self.versions.c.node))
|
1015 |
else:
|
1016 |
filtered = select([self.nodes.c.latest_version])
|
1017 |
filtered = filtered.where(self.nodes.c.node ==
|
1018 |
self.versions.c.node
|
1019 |
).correlate(self.versions)
|
1020 |
s = s.where(self.versions.c.serial == filtered)
|
1021 |
s = s.where(self.versions.c.cluster != except_cluster)
|
1022 |
s = s.where(self.versions.c.node.in_(select([self.nodes.c.node], |
1023 |
self.nodes.c.parent == parent)))
|
1024 |
s = s.where(self.attributes.c.serial == self.versions.c.serial) |
1025 |
s = s.where(self.attributes.c.domain == domain)
|
1026 |
s = s.where(self.nodes.c.node == self.versions.c.node) |
1027 |
s = s.order_by(self.attributes.c.key)
|
1028 |
conja = [] |
1029 |
conjb = [] |
1030 |
for path, match in pathq: |
1031 |
if match == MATCH_PREFIX:
|
1032 |
conja.append(self.nodes.c.path.like(self.escape_like(path) + |
1033 |
'%', escape=ESCAPE_CHAR))
|
1034 |
elif match == MATCH_EXACT:
|
1035 |
conjb.append(path) |
1036 |
if conja or conjb: |
1037 |
s = s.where(or_(self.nodes.c.path.in_(conjb), *conja))
|
1038 |
rp = self.conn.execute(s)
|
1039 |
rows = rp.fetchall() |
1040 |
rp.close() |
1041 |
return [r[0] for r in rows] |
1042 |
|
1043 |
def latest_version_list(self, parent, prefix='', delimiter=None, |
1044 |
start='', limit=10000, before=inf, |
1045 |
except_cluster=0, pathq=[], domain=None, |
1046 |
filterq=[], sizeq=None, all_props=False): |
1047 |
"""Return a (list of (path, serial) tuples, list of common prefixes)
|
1048 |
for the current versions of the paths with the given parent,
|
1049 |
matching the following criteria.
|
1050 |
|
1051 |
The property tuple for a version is returned if all
|
1052 |
of these conditions are true:
|
1053 |
|
1054 |
a. parent matches
|
1055 |
|
1056 |
b. path > start
|
1057 |
|
1058 |
c. path starts with prefix (and paths in pathq)
|
1059 |
|
1060 |
d. version is the max up to before
|
1061 |
|
1062 |
e. version is not in cluster
|
1063 |
|
1064 |
f. the path does not have the delimiter occuring
|
1065 |
after the prefix, or ends with the delimiter
|
1066 |
|
1067 |
g. serial matches the attribute filter query.
|
1068 |
|
1069 |
A filter query is a comma-separated list of
|
1070 |
terms in one of these three forms:
|
1071 |
|
1072 |
key
|
1073 |
an attribute with this key must exist
|
1074 |
|
1075 |
!key
|
1076 |
an attribute with this key must not exist
|
1077 |
|
1078 |
key ?op value
|
1079 |
the attribute with this key satisfies the value
|
1080 |
where ?op is one of ==, != <=, >=, <, >.
|
1081 |
|
1082 |
h. the size is in the range set by sizeq
|
1083 |
|
1084 |
The list of common prefixes includes the prefixes
|
1085 |
matching up to the first delimiter after prefix,
|
1086 |
and are reported only once, as "virtual directories".
|
1087 |
The delimiter is included in the prefixes.
|
1088 |
|
1089 |
If arguments are None, then the corresponding matching rule
|
1090 |
will always match.
|
1091 |
|
1092 |
Limit applies to the first list of tuples returned.
|
1093 |
|
1094 |
If all_props is True, return all properties after path,
|
1095 |
not just serial.
|
1096 |
"""
|
1097 |
|
1098 |
if not start or start < prefix: |
1099 |
start = strprevling(prefix) |
1100 |
nextling = strnextling(prefix) |
1101 |
|
1102 |
v = self.versions.alias('v') |
1103 |
n = self.nodes.alias('n') |
1104 |
if before != inf:
|
1105 |
filtered = select([func.max(v.c.serial)], |
1106 |
and_(v.c.mtime < before, |
1107 |
v.c.node == self.versions.c.node))
|
1108 |
inner_join = \ |
1109 |
self.nodes.join(self.versions, |
1110 |
onclause=self.versions.c.serial == filtered)
|
1111 |
else:
|
1112 |
filtered = select([self.nodes.c.latest_version])
|
1113 |
filtered = filtered.where(self.nodes.c.node ==
|
1114 |
self.versions.c.node
|
1115 |
).correlate(self.versions)
|
1116 |
inner_join = \ |
1117 |
self.nodes.join(self.versions, |
1118 |
onclause= |
1119 |
self.versions.c.serial == filtered)
|
1120 |
if not all_props: |
1121 |
s = select([self.nodes.c.path,
|
1122 |
self.versions.c.serial],
|
1123 |
from_obj=[inner_join]).distinct() |
1124 |
else:
|
1125 |
s = select([self.nodes.c.path,
|
1126 |
self.versions.c.serial, self.versions.c.node, |
1127 |
self.versions.c.hash,
|
1128 |
self.versions.c.size, self.versions.c.type, |
1129 |
self.versions.c.source,
|
1130 |
self.versions.c.mtime, self.versions.c.muser, |
1131 |
self.versions.c.uuid,
|
1132 |
self.versions.c.checksum,
|
1133 |
self.versions.c.cluster],
|
1134 |
from_obj=[inner_join]).distinct() |
1135 |
|
1136 |
s = s.where(self.versions.c.cluster != except_cluster)
|
1137 |
s = s.where(self.versions.c.node.in_(select([self.nodes.c.node], |
1138 |
self.nodes.c.parent == parent)))
|
1139 |
|
1140 |
s = s.where(self.versions.c.node == self.nodes.c.node) |
1141 |
s = s.where(and_(self.nodes.c.path > bindparam('start'), |
1142 |
self.nodes.c.path < nextling))
|
1143 |
conja = [] |
1144 |
conjb = [] |
1145 |
for path, match in pathq: |
1146 |
if match == MATCH_PREFIX:
|
1147 |
conja.append(self.nodes.c.path.like(self.escape_like(path) + |
1148 |
'%', escape=ESCAPE_CHAR))
|
1149 |
elif match == MATCH_EXACT:
|
1150 |
conjb.append(path) |
1151 |
if conja or conjb: |
1152 |
s = s.where(or_(self.nodes.c.path.in_(conjb), *conja))
|
1153 |
|
1154 |
if sizeq and len(sizeq) == 2: |
1155 |
if sizeq[0]: |
1156 |
s = s.where(self.versions.c.size >= sizeq[0]) |
1157 |
if sizeq[1]: |
1158 |
s = s.where(self.versions.c.size < sizeq[1]) |
1159 |
|
1160 |
if domain and filterq: |
1161 |
a = self.attributes.alias('a') |
1162 |
included, excluded, opers = parse_filters(filterq) |
1163 |
if included:
|
1164 |
subs = select([1])
|
1165 |
subs = subs.where(self.attributes.c.serial ==
|
1166 |
self.versions.c.serial
|
1167 |
).correlate(self.versions)
|
1168 |
subs = subs.where(self.attributes.c.domain == domain)
|
1169 |
subs = subs.where(or_(*[self.attributes.c.key.op('=')(x) |
1170 |
for x in included])) |
1171 |
s = s.where(exists(subs)) |
1172 |
if excluded:
|
1173 |
subs = select([1])
|
1174 |
subs = subs.where(self.attributes.c.serial ==
|
1175 |
self.versions.c.serial
|
1176 |
).correlate(self.versions)
|
1177 |
subs = subs.where(self.attributes.c.domain == domain)
|
1178 |
subs = subs.where(or_(*[self.attributes.c.key.op('=')(x) |
1179 |
for x in excluded])) |
1180 |
s = s.where(not_(exists(subs))) |
1181 |
if opers:
|
1182 |
for k, o, val in opers: |
1183 |
subs = select([1])
|
1184 |
subs = subs.where(self.attributes.c.serial ==
|
1185 |
self.versions.c.serial
|
1186 |
).correlate(self.versions)
|
1187 |
subs = subs.where(self.attributes.c.domain == domain)
|
1188 |
subs = subs.where( |
1189 |
and_(self.attributes.c.key.op('=')(k), |
1190 |
self.attributes.c.value.op(o)(val)))
|
1191 |
s = s.where(exists(subs)) |
1192 |
|
1193 |
s = s.order_by(self.nodes.c.path)
|
1194 |
|
1195 |
if not delimiter: |
1196 |
s = s.limit(limit) |
1197 |
rp = self.conn.execute(s, start=start)
|
1198 |
r = rp.fetchall() |
1199 |
rp.close() |
1200 |
return r, ()
|
1201 |
|
1202 |
pfz = len(prefix)
|
1203 |
dz = len(delimiter)
|
1204 |
count = 0
|
1205 |
prefixes = [] |
1206 |
pappend = prefixes.append |
1207 |
matches = [] |
1208 |
mappend = matches.append |
1209 |
|
1210 |
rp = self.conn.execute(s, start=start)
|
1211 |
while True: |
1212 |
props = rp.fetchone() |
1213 |
if props is None: |
1214 |
break
|
1215 |
path = props[0]
|
1216 |
idx = path.find(delimiter, pfz) |
1217 |
|
1218 |
if idx < 0: |
1219 |
mappend(props) |
1220 |
count += 1
|
1221 |
if count >= limit:
|
1222 |
break
|
1223 |
continue
|
1224 |
|
1225 |
if idx + dz == len(path): |
1226 |
mappend(props) |
1227 |
count += 1
|
1228 |
continue # Get one more, in case there is a path. |
1229 |
pf = path[:idx + dz] |
1230 |
pappend(pf) |
1231 |
if count >= limit:
|
1232 |
break
|
1233 |
|
1234 |
rp = self.conn.execute(s, start=strnextling(pf)) # New start. |
1235 |
rp.close() |
1236 |
|
1237 |
return matches, prefixes
|
1238 |
|
1239 |
def latest_uuid(self, uuid, cluster): |
1240 |
"""Return the latest version of the given uuid and cluster.
|
1241 |
|
1242 |
Return a (path, serial) tuple.
|
1243 |
If cluster is None, all clusters are considered.
|
1244 |
|
1245 |
"""
|
1246 |
|
1247 |
v = self.versions.alias('v') |
1248 |
n = self.nodes.alias('n') |
1249 |
s = select([n.c.path, v.c.serial]) |
1250 |
filtered = select([func.max(self.versions.c.serial)])
|
1251 |
filtered = filtered.where(self.versions.c.uuid == uuid)
|
1252 |
if cluster is not None: |
1253 |
filtered = filtered.where(self.versions.c.cluster == cluster)
|
1254 |
s = s.where(v.c.serial == filtered) |
1255 |
s = s.where(n.c.node == v.c.node) |
1256 |
|
1257 |
r = self.conn.execute(s)
|
1258 |
l = r.fetchone() |
1259 |
r.close() |
1260 |
return l
|
1261 |
|
1262 |
def domain_object_list(self, domain, paths, cluster=None): |
1263 |
"""Return a list of (path, property list, attribute dictionary)
|
1264 |
for the objects in the specific domain and cluster.
|
1265 |
"""
|
1266 |
|
1267 |
v = self.versions.alias('v') |
1268 |
n = self.nodes.alias('n') |
1269 |
a = self.attributes.alias('a') |
1270 |
|
1271 |
s = select([n.c.path, v.c.serial, v.c.node, v.c.hash, v.c.size, |
1272 |
v.c.type, v.c.source, v.c.mtime, v.c.muser, v.c.uuid, |
1273 |
v.c.checksum, v.c.cluster, a.c.key, a.c.value]) |
1274 |
if cluster:
|
1275 |
s = s.where(v.c.cluster == cluster) |
1276 |
s = s.where(v.c.serial == a.c.serial) |
1277 |
s = s.where(a.c.domain == domain) |
1278 |
s = s.where(a.c.node == n.c.node) |
1279 |
s = s.where(a.c.is_latest == True)
|
1280 |
if paths:
|
1281 |
s = s.where(n.c.path.in_(paths)) |
1282 |
|
1283 |
r = self.conn.execute(s)
|
1284 |
rows = r.fetchall() |
1285 |
r.close() |
1286 |
|
1287 |
group_by = itemgetter(slice(12)) |
1288 |
rows.sort(key=group_by) |
1289 |
groups = groupby(rows, group_by) |
1290 |
return [(k[0], k[1:], dict([i[12:] for i in data])) for |
1291 |
(k, data) in groups]
|
1292 |
|
1293 |
def get_props(self, paths): |
1294 |
inner_join = \ |
1295 |
self.nodes.join(self.versions, |
1296 |
onclause=self.versions.c.serial ==
|
1297 |
self.nodes.c.latest_version)
|
1298 |
cc = self.nodes.c.path.in_(paths)
|
1299 |
s = select([self.nodes.c.path, self.versions.c.type], |
1300 |
from_obj=[inner_join]).where(cc).distinct() |
1301 |
r = self.conn.execute(s)
|
1302 |
rows = r.fetchall() |
1303 |
r.close() |
1304 |
if rows:
|
1305 |
return rows
|
1306 |
return None |