From: david-sarah Date: Fri, 18 Jun 2010 23:01:19 +0000 (-0700) Subject: dirnode.py: stop writing 'ctime' and 'mtime' fields. Includes documentation and test... X-Git-Tag: allmydata-tahoe-1.7.0~11 X-Git-Url: https://git.rkrishnan.org/%5B/%5D%20/uri/flags/quickstart.html?a=commitdiff_plain;h=471287519385facbb66216848918d5ca79a8e6ee;p=tahoe-lafs%2Ftahoe-lafs.git dirnode.py: stop writing 'ctime' and 'mtime' fields. Includes documentation and test changes. --- diff --git a/docs/frontends/webapi.txt b/docs/frontends/webapi.txt index 9d5afd81..e1d1e780 100644 --- a/docs/frontends/webapi.txt +++ b/docs/frontends/webapi.txt @@ -664,25 +664,41 @@ GET /uri/$DIRCAP/[SUBDIRS../]FILENAME?t=json ==== About the metadata ==== - The value of the 'mtime' key and of the 'tahoe':'linkmotime' is updated - whenever a link to a child is set. The value of the 'ctime' key and of the - 'tahoe':'linkcrtime' key is updated whenever a link to a child is created -- - i.e. when there was not previously a link under that name. - - In Tahoe earlier than v1.4.0, only the 'mtime'/'ctime' keys were populated. - Starting in Tahoe v1.4.0, the 'linkmotime'/'linkcrtime' keys in the 'tahoe' - sub-dict are also populated. However, prior to v1.7.0, a bug caused the - 'tahoe' sub-dict to be deleted by webapi requests in which new metadata - is specified, and not to be added to existing child links that lack it. - - The reason we added the new values in Tahoe v1.4.0 is that there is a + The value of the 'tahoe':'linkmotime' key is updated whenever a link to a + child is set. The value of the 'tahoe':'linkcrtime' key is updated whenever + a link to a child is created -- i.e. when there was not previously a link + under that name. + + Note however, that if the edge in the Tahoe filesystem points to a mutable + file and the contents of that mutable file is changed, then the + 'tahoe':'linkmotime' value on that edge will *not* be updated, since the + edge itself wasn't updated -- only the mutable file was. + + The timestamps are represented as a number of seconds since the UNIX epoch + (1970-01-01 00:00:00 UTC), excluding leap seconds. + + In Tahoe earlier than v1.4.0, 'mtime' and 'ctime' keys were populated + instead of the 'tahoe':'linkmotime' and 'tahoe':'linkcrtime' keys. Starting + in Tahoe v1.4.0, the 'linkmotime'/'linkcrtime' keys in the 'tahoe' sub-dict + are populated. However, prior to Tahoe v1.7beta, a bug caused the 'tahoe' + sub-dict to be deleted by webapi requests in which new metadata is + specified, and not to be added to existing child links that lack it. + + From Tahoe v1.7.0 onward, the 'mtime' and 'ctime' fields are no longer + populated or updated (see ticket #924), except by "tahoe backup" as + explained below. For backward compatibility, when an existing link is + updated and 'tahoe':'linkcrtime' is not present in the previous metadata + but 'ctime' is, the old value of 'ctime' is used as the new value of + 'tahoe':'linkcrtime'. + + The reason we added the new fields in Tahoe v1.4.0 is that there is a "set_children" API (described below) which you can use to overwrite the - values of the 'mtime'/'ctime' pair, and this API is used by the "tahoe - backup" command (both in Tahoe v1.3.0 and in Tahoe v1.4.0) to set the - 'mtime' and 'ctime' values when backing up files from a local filesystem - into the Tahoe filesystem. As of Tahoe v1.4.0, the set_children API cannot - be used to set anything under the 'tahoe' key of the metadata dict -- if - you include 'tahoe' keys in your 'metadata' arguments then it will silently + values of the 'mtime'/'ctime' pair, and this API is used by the + "tahoe backup" command (in Tahoe v1.3.0 and later) to set the 'mtime' and + 'ctime' values when backing up files from a local filesystem into the + Tahoe filesystem. As of Tahoe v1.4.0, the set_children API cannot be used + to set anything under the 'tahoe' key of the metadata dict -- if you + include 'tahoe' keys in your 'metadata' arguments then it will silently ignore those keys. Therefore, if the 'tahoe' sub-dict is present, you can rely on the @@ -694,60 +710,45 @@ GET /uri/$DIRCAP/[SUBDIRS../]FILENAME?t=json they like, and there is nothing to constrain their system clock from taking any value.) - The meaning of the 'ctime'/'mtime' fields are slightly more complex. - - The meaning of the 'mtime' field is: whenever the edge is updated (by an HTTP - PUT or POST, as is done by the "tahoe cp" command), then the mtime is set to - the current time on the clock of the updating client. Whenever the edge is - updated by "tahoe backup" then the mtime is instead set to the value which - the updating client read from its local filesystem for the "mtime" of the - local file in question, which means the last time the contents of that file - were changed. Note however, that if the edge in the Tahoe filesystem points - to a mutable file and the contents of that mutable file is changed then the - "mtime" value on that edge will *not* be updated, since the edge itself - wasn't updated -- only the mutable file was. - - The meaning of the 'ctime' field is even more complex. Whenever a new edge is - created (by an HTTP PUT or POST, as is done by "tahoe cp") then the ctime is - set to the current time on the clock of the updating client. Whenever the - edge is created *or updated* by "tahoe backup" then the ctime is instead set - to the value which the updating client read from its local filesystem. On - Windows, it reads the timestamp of when the local file was created and puts - that into the "ctime", and on other platforms it reads the timestamp of the - most recent time that either the contents or the metadata of the local file - was changed and puts that into the ctime. Again, if the edge points to a - mutable file and the content of that mutable file is changed then the ctime - will not be updated in any case. - - Therefore there are several ways that the 'ctime' field could be confusing: + When an edge is created or updated by "tahoe backup", the 'mtime' and + 'ctime' keys on that edge are set as follows: + + * 'mtime' is set to the timestamp read from the local filesystem for the + "mtime" of the local file in question, which means the last time the + contents of that file were changed. + + * On Windows, 'ctime' is set to the creation timestamp for the file + read from the local filesystem. On other platforms, 'ctime' is set to + the UNIX "ctime" of the local file, which means the last time that + either the contents or the metadata of the local file was changed. + + There are several ways that the 'ctime' field could be confusing: 1. You might be confused about whether it reflects the time of the creation - of a link in the Tahoe filesystem or a timestamp copied in from a local - filesystem. - - 2. You might be confused about whether it is a copy of the file creation time - (if "tahoe backup" was run on a Windows system) or of the last - contents-or-metadata change (if "tahoe backup" was run on a different - operating system). - - 3. You might be confused by the fact that changing the contents of a mutable - file in Tahoe don't have any effect on any links pointing at that file in any - directories, although "tahoe backup" sets the link 'ctime'/'mtime' to reflect - timestamps about the local file corresponding to the Tahoe file to which the - link points. - - 4. Also, quite apart from Tahoe, you might be confused about the meaning of - the 'ctime' in UNIX local filesystems, which people sometimes think means - file creation time, but which actually means, in UNIX local filesystems, the - most recent time that the file contents or the file metadata (such as owner, - permission bits, extended attributes, etc.) has changed. Note that although - 'ctime' does not mean file creation time in UNIX, it does mean link creation - time in Tahoe, unless the "tahoe backup" command has been used on that link, - in which case it means something about the local filesystem file which - corresponds to the Tahoe file which is pointed at by the link. It means - either file creation time of the local file (if "tahoe backup" was run on - Windows) or file-contents-or-metadata-update-time of the local file (if - "tahoe backup" was run on a different operating system). + of a link in the Tahoe filesystem (by a version of Tahoe < v1.7.0) or a + timestamp copied in by "tahoe backup" from a local filesystem. + + 2. You might be confused about whether it is a copy of the file creation + time (if "tahoe backup" was run on a Windows system) or of the last + contents-or-metadata change (if "tahoe backup" was run on a different + operating system). + + 3. You might be confused by the fact that changing the contents of a + mutable file in Tahoe don't have any effect on any links pointing at + that file in any directories, although "tahoe backup" sets the link + 'ctime'/'mtime' to reflect timestamps about the local file corresponding + to the Tahoe file to which the link points. + + 4. Also, quite apart from Tahoe, you might be confused about the meaning + of the "ctime" in UNIX local filesystems, which people sometimes think + means file creation time, but which actually means, in UNIX local + filesystems, the most recent time that the file contents or the file + metadata (such as owner, permission bits, extended attributes, etc.) + has changed. Note that although "ctime" does not mean file creation time + in UNIX, links created by a version of Tahoe prior to v1.7.0, and never + written by "tahoe backup", will have 'ctime' set to the link creation + time. + === Attaching an existing File or Directory by its read- or write- cap === diff --git a/src/allmydata/dirnode.py b/src/allmydata/dirnode.py index 45f6c15c..a8a8d44d 100644 --- a/src/allmydata/dirnode.py +++ b/src/allmydata/dirnode.py @@ -30,13 +30,11 @@ def update_metadata(metadata, new_metadata, now): Timestamps are set according to the time 'now'.""" if metadata is None: - metadata = {'ctime': now, - 'mtime': now, - 'tahoe': { - 'linkcrtime': now, - 'linkmotime': now, - } - } + metadata = {} + + old_ctime = None + if 'ctime' in metadata: + old_ctime = metadata['ctime'] if new_metadata is not None: # Overwrite all metadata. @@ -48,29 +46,19 @@ def update_metadata(metadata, new_metadata, now): if 'tahoe' in metadata: newmd['tahoe'] = metadata['tahoe'] - # For backwards compatibility with Tahoe < 1.4.0: - if 'ctime' not in newmd: - if 'ctime' in metadata: - newmd['ctime'] = metadata['ctime'] - else: - newmd['ctime'] = now - if 'mtime' not in newmd: - newmd['mtime'] = now - metadata = newmd - else: - # For backwards compatibility with Tahoe < 1.4.0: - if 'ctime' not in metadata: - metadata['ctime'] = now - metadata['mtime'] = now # update timestamps sysmd = metadata.get('tahoe', {}) if 'linkcrtime' not in sysmd: # In Tahoe < 1.4.0 we used the word 'ctime' to mean what Tahoe >= 1.4.0 - # calls 'linkcrtime'. - assert 'ctime' in metadata - sysmd['linkcrtime'] = metadata['ctime'] + # calls 'linkcrtime'. This field is only used if it was in the old metadata, + # and 'tahoe:linkcrtime' was not. + if old_ctime is not None: + sysmd['linkcrtime'] = old_ctime + else: + sysmd['linkcrtime'] = now + sysmd['linkmotime'] = now metadata['tahoe'] = sysmd diff --git a/src/allmydata/test/test_dirnode.py b/src/allmydata/test/test_dirnode.py index 52913e6c..14a613ad 100644 --- a/src/allmydata/test/test_dirnode.py +++ b/src/allmydata/test/test_dirnode.py @@ -746,7 +746,7 @@ class Dirnode(GridTestMixin, unittest.TestCase, d.addCallback(lambda res: n.get_metadata_for(u"child")) d.addCallback(lambda metadata: self.failUnlessEqual(set(metadata.keys()), - set(["tahoe", "ctime", "mtime"]))) + set(["tahoe"]))) d.addCallback(lambda res: self.shouldFail(NoSuchChildError, "gcamap-no", @@ -768,8 +768,7 @@ class Dirnode(GridTestMixin, unittest.TestCase, child, metadata = res self.failUnlessEqual(child.get_uri(), fake_file_uri) - self.failUnlessEqual(set(metadata.keys()), - set(["tahoe", "ctime", "mtime"])) + self.failUnlessEqual(set(metadata.keys()), set(["tahoe"])) d.addCallback(_check_child_and_metadata2) d.addCallback(lambda res: @@ -777,8 +776,7 @@ class Dirnode(GridTestMixin, unittest.TestCase, def _check_child_and_metadata3(res): child, metadata = res self.failUnless(isinstance(child, dirnode.DirectoryNode)) - self.failUnlessEqual(set(metadata.keys()), - set(["tahoe", "ctime", "mtime"])) + self.failUnlessEqual(set(metadata.keys()), set(["tahoe"])) d.addCallback(_check_child_and_metadata3) # set_uri + metadata @@ -788,7 +786,7 @@ class Dirnode(GridTestMixin, unittest.TestCase, {})) d.addCallback(lambda res: n.get_metadata_for(u"c2")) d.addCallback(lambda metadata: - self.failUnlessEqual(set(metadata.keys()), set(["tahoe", "ctime", "mtime"]))) + self.failUnlessEqual(set(metadata.keys()), set(["tahoe"]))) # You can't override the link timestamps. d.addCallback(lambda res: n.set_uri(u"c2", @@ -806,7 +804,7 @@ class Dirnode(GridTestMixin, unittest.TestCase, fake_file_uri, fake_file_uri)) d.addCallback(lambda res: n.get_metadata_for(u"c3")) d.addCallback(lambda metadata: - self.failUnlessEqual(set(metadata.keys()), set(["tahoe", "ctime", "mtime"]))) + self.failUnlessEqual(set(metadata.keys()), set(["tahoe"]))) # we can also add specific metadata at set_uri() time d.addCallback(lambda res: n.set_uri(u"c4", @@ -814,7 +812,7 @@ class Dirnode(GridTestMixin, unittest.TestCase, {"key": "value"})) d.addCallback(lambda res: n.get_metadata_for(u"c4")) d.addCallback(lambda metadata: - self.failUnless((set(metadata.keys()) == set(["key", "tahoe", "ctime", "mtime"])) and + self.failUnless((set(metadata.keys()) == set(["key", "tahoe"])) and (metadata['key'] == "value"), metadata)) d.addCallback(lambda res: n.delete(u"c2")) @@ -832,20 +830,20 @@ class Dirnode(GridTestMixin, unittest.TestCase, overwrite=False)) d.addCallback(lambda res: n.get_metadata_for(u"d2")) d.addCallback(lambda metadata: - self.failUnlessEqual(set(metadata.keys()), set(["tahoe", "ctime", "mtime"]))) + self.failUnlessEqual(set(metadata.keys()), set(["tahoe"]))) # if we don't set any defaults, the child should get timestamps d.addCallback(lambda res: n.set_node(u"d3", n)) d.addCallback(lambda res: n.get_metadata_for(u"d3")) d.addCallback(lambda metadata: - self.failUnlessEqual(set(metadata.keys()), set(["tahoe", "ctime", "mtime"]))) + self.failUnlessEqual(set(metadata.keys()), set(["tahoe"]))) # we can also add specific metadata at set_node() time d.addCallback(lambda res: n.set_node(u"d4", n, {"key": "value"})) d.addCallback(lambda res: n.get_metadata_for(u"d4")) d.addCallback(lambda metadata: - self.failUnless((set(metadata.keys()) == set(["key", "tahoe", "ctime", "mtime"])) and + self.failUnless((set(metadata.keys()) == set(["key", "tahoe"])) and (metadata["key"] == "value"), metadata)) d.addCallback(lambda res: n.delete(u"d2")) @@ -876,13 +874,13 @@ class Dirnode(GridTestMixin, unittest.TestCase, d.addCallback(lambda children: self.failIf(u"new" in children)) d.addCallback(lambda res: n.get_metadata_for(u"e1")) d.addCallback(lambda metadata: - self.failUnlessEqual(set(metadata.keys()), set(["tahoe", "ctime", "mtime"]))) + self.failUnlessEqual(set(metadata.keys()), set(["tahoe"]))) d.addCallback(lambda res: n.get_metadata_for(u"e2")) d.addCallback(lambda metadata: - self.failUnlessEqual(set(metadata.keys()), set(["tahoe", "ctime", "mtime"]))) + self.failUnlessEqual(set(metadata.keys()), set(["tahoe"]))) d.addCallback(lambda res: n.get_metadata_for(u"e3")) d.addCallback(lambda metadata: - self.failUnless((set(metadata.keys()) == set(["key", "tahoe", "ctime", "mtime"])) and + self.failUnless((set(metadata.keys()) == set(["key", "tahoe"])) and (metadata["key"] == "value"), metadata)) d.addCallback(lambda res: n.delete(u"e1")) @@ -907,13 +905,13 @@ class Dirnode(GridTestMixin, unittest.TestCase, d.addCallback(lambda children: self.failIf(u"new" in children)) d.addCallback(lambda res: n.get_metadata_for(u"f1")) d.addCallback(lambda metadata: - self.failUnlessEqual(set(metadata.keys()), set(["tahoe", "ctime", "mtime"]))) + self.failUnlessEqual(set(metadata.keys()), set(["tahoe"]))) d.addCallback(lambda res: n.get_metadata_for(u"f2")) d.addCallback(lambda metadata: - self.failUnlessEqual(set(metadata.keys()), set(["tahoe", "ctime", "mtime"]))) + self.failUnlessEqual(set(metadata.keys()), set(["tahoe"]))) d.addCallback(lambda res: n.get_metadata_for(u"f3")) d.addCallback(lambda metadata: - self.failUnless((set(metadata.keys()) == set(["key", "tahoe", "ctime", "mtime"])) and + self.failUnless((set(metadata.keys()) == set(["key", "tahoe"])) and (metadata["key"] == "value"), metadata)) d.addCallback(lambda res: n.delete(u"f1")) @@ -926,7 +924,7 @@ class Dirnode(GridTestMixin, unittest.TestCase, {"tags": ["web2.0-compatible"], "tahoe": {"bad": "mojo"}})) d.addCallback(lambda n1: n1.get_metadata_for(u"child")) d.addCallback(lambda metadata: - self.failUnless((set(metadata.keys()) == set(["tags", "tahoe", "ctime", "mtime"])) and + self.failUnless((set(metadata.keys()) == set(["tags", "tahoe"])) and metadata["tags"] == ["web2.0-compatible"] and "bad" not in metadata["tahoe"], metadata)) @@ -953,43 +951,37 @@ class Dirnode(GridTestMixin, unittest.TestCase, d.addCallback(lambda res: n.get_metadata_for(u"timestamps")) def _check_timestamp1(metadata): - self.failUnless("ctime" in metadata) - self.failUnless("mtime" in metadata) - self.failUnlessGreaterOrEqualThan(metadata["ctime"], + self.failUnlessEqual(set(metadata.keys()), set(["tahoe"])) + tahoe_md = metadata["tahoe"] + self.failUnlessEqual(set(tahoe_md.keys()), set(["linkcrtime", "linkmotime"])) + + self.failUnlessGreaterOrEqualThan(tahoe_md["linkcrtime"], self._start_timestamp) self.failUnlessGreaterOrEqualThan(self._stop_timestamp, - metadata["ctime"]) - self.failUnlessGreaterOrEqualThan(metadata["mtime"], + tahoe_md["linkcrtime"]) + self.failUnlessGreaterOrEqualThan(tahoe_md["linkmotime"], self._start_timestamp) self.failUnlessGreaterOrEqualThan(self._stop_timestamp, - metadata["mtime"]) + tahoe_md["linkmotime"]) # Our current timestamp rules say that replacing an existing - # child should preserve the 'ctime' but update the mtime - self._old_ctime = metadata["ctime"] - self._old_mtime = metadata["mtime"] + # child should preserve the 'linkcrtime' but update the + # 'linkmotime' + self._old_linkcrtime = tahoe_md["linkcrtime"] + self._old_linkmotime = tahoe_md["linkmotime"] d.addCallback(_check_timestamp1) d.addCallback(self.stall, 2.0) # accomodate low-res timestamps d.addCallback(lambda res: n.set_node(u"timestamps", n)) d.addCallback(lambda res: n.get_metadata_for(u"timestamps")) def _check_timestamp2(metadata): - self.failUnlessEqual(metadata["ctime"], self._old_ctime, - "%s != %s" % (metadata["ctime"], - self._old_ctime)) - self.failUnlessGreaterThan(metadata["mtime"], self._old_mtime) + self.failUnlessIn("tahoe", metadata) + tahoe_md = metadata["tahoe"] + self.failUnlessEqual(set(tahoe_md.keys()), set(["linkcrtime", "linkmotime"])) + + self.failUnlessEqual(tahoe_md["linkcrtime"], self._old_linkcrtime) + self.failUnlessGreaterThan(tahoe_md["linkmotime"], self._old_linkmotime) return n.delete(u"timestamps") d.addCallback(_check_timestamp2) - # also make sure we can add/update timestamps on a - # previously-existing child that didn't have any, since there are - # a lot of 0.7.0-generated edges around out there - d.addCallback(lambda res: n.set_node(u"no_timestamps", n, {})) - d.addCallback(lambda res: n.set_node(u"no_timestamps", n)) - d.addCallback(lambda res: n.get_metadata_for(u"no_timestamps")) - d.addCallback(lambda metadata: - self.failUnlessEqual(set(metadata.keys()), - set(["tahoe", "ctime", "mtime"]))) - d.addCallback(lambda res: n.delete(u"no_timestamps")) - d.addCallback(lambda res: n.delete(u"subdir")) d.addCallback(lambda old_child: self.failUnlessEqual(old_child.get_uri(), @@ -1017,8 +1009,7 @@ class Dirnode(GridTestMixin, unittest.TestCase, set([u"child", u"newfile"]))) d.addCallback(lambda res: n.get_metadata_for(u"newfile")) d.addCallback(lambda metadata: - self.failUnlessEqual(set(metadata.keys()), - set(["tahoe", "ctime", "mtime"]))) + self.failUnlessEqual(set(metadata.keys()), set(["tahoe"]))) uploadable3 = upload.Data("some data", convergence="converge") d.addCallback(lambda res: n.add_file(u"newfile-metadata", @@ -1028,7 +1019,7 @@ class Dirnode(GridTestMixin, unittest.TestCase, self.failUnless(IImmutableFileNode.providedBy(newnode))) d.addCallback(lambda res: n.get_metadata_for(u"newfile-metadata")) d.addCallback(lambda metadata: - self.failUnless((set(metadata.keys()) == set(["key", "tahoe", "ctime", "mtime"])) and + self.failUnless((set(metadata.keys()) == set(["key", "tahoe"])) and (metadata['key'] == "value"), metadata)) d.addCallback(lambda res: n.delete(u"newfile-metadata")) @@ -1120,19 +1111,21 @@ class Dirnode(GridTestMixin, unittest.TestCase, return d def test_update_metadata(self): - (t1, t2, t3) = (626644800, 634745640, 892226160) + (t1, t2, t3) = (626644800.0, 634745640.0, 892226160.0) - md1 = dirnode.update_metadata({}, {"ctime": t1}, t2) - self.failUnlessEqual(md1, {"ctime": t1, "mtime": t2, - "tahoe":{"linkcrtime": t1, "linkmotime": t2}}) + md1 = dirnode.update_metadata({"ctime": t1}, {}, t2) + self.failUnlessEqual(md1, {"tahoe":{"linkcrtime": t1, "linkmotime": t2}}) md2 = dirnode.update_metadata(md1, {"key": "value", "tahoe": {"bad": "mojo"}}, t3) - self.failUnlessEqual(md2, {"key": "value", "ctime": t1, "mtime": t3, + self.failUnlessEqual(md2, {"key": "value", "tahoe":{"linkcrtime": t1, "linkmotime": t3}}) md3 = dirnode.update_metadata({}, None, t3) - self.failUnlessEqual(md3, {"ctime": t3, "mtime": t3, - "tahoe":{"linkcrtime": t3, "linkmotime": t3}}) + self.failUnlessEqual(md3, {"tahoe":{"linkcrtime": t3, "linkmotime": t3}}) + + md4 = dirnode.update_metadata({}, {"bool": True, "number": 42}, t1) + self.failUnlessEqual(md4, {"bool": True, "number": 42, + "tahoe":{"linkcrtime": t1, "linkmotime": t1}}) def test_create_subdirectory(self): self.basedir = "dirnode/Dirnode/test_create_subdirectory" diff --git a/src/allmydata/test/test_web.py b/src/allmydata/test/test_web.py index 361d2ca1..fe615f5d 100644 --- a/src/allmydata/test/test_web.py +++ b/src/allmydata/test/test_web.py @@ -240,16 +240,18 @@ class WebMixin(object): for (name,value) in data[1]["children"].iteritems()] ) self.failUnlessEqual(kids[u"sub"][0], "dirnode") - self.failUnless("metadata" in kids[u"sub"][1]) - self.failUnless("ctime" in kids[u"sub"][1]["metadata"]) - self.failUnless("mtime" in kids[u"sub"][1]["metadata"]) + self.failUnlessIn("metadata", kids[u"sub"][1]) + self.failUnlessIn("tahoe", kids[u"sub"][1]["metadata"]) + tahoe_md = kids[u"sub"][1]["metadata"]["tahoe"] + self.failUnlessIn("linkcrtime", tahoe_md) + self.failUnlessIn("linkmotime", tahoe_md) self.failUnlessEqual(kids[u"bar.txt"][0], "filenode") self.failUnlessEqual(kids[u"bar.txt"][1]["size"], len(self.BAR_CONTENTS)) self.failUnlessEqual(kids[u"bar.txt"][1]["ro_uri"], self._bar_txt_uri) self.failUnlessEqual(kids[u"bar.txt"][1]["verify_uri"], self._bar_txt_verifycap) - self.failUnlessEqual(kids[u"bar.txt"][1]["metadata"]["ctime"], - self._bar_txt_metadata["ctime"]) + self.failUnlessEqual(kids[u"bar.txt"][1]["metadata"]["tahoe"]["linkcrtime"], + self._bar_txt_metadata["tahoe"]["linkcrtime"]) self.failUnlessEqual(kids[u"n\u00fc.txt"][1]["ro_uri"], self._bar_txt_uri)