Mercurial > hg > mercurial-crew-with-dirclash
annotate hgwebdir.cgi @ 1998:65cc17ae9649
fix race in localrepo.addchangegroup.
localrepo.addchangegroup writes to changelog, then manifest, then normal
files. this breaks access ordering. if reader reads changelog while
manifest is being written, can find pointers into places in manifest
that are not yet written. same can happen for manifest and normal files.
fix is to make almost no change to localrepo.addchangegroup. it must
to write changelog and manifest data early because it has to read them
while writing other files. instead, write changelog and manifest data
to temp file that reader cannot see, then append temp data to manifest
after all normal files written, finally append temp data to changelog.
temp file code is in new appendfile module. can be used in other places
with small changes.
much smaller race still left. we write all new data in one write call,
but reader can maybe see partial update because python or os or filesystem
cannot always make write really atomic. file locking no help: slow, not
portable, not reliable over nfs. only real safe other plan is write to
temp file every time and rename, but performance bad when manifest or
changelog is big.
author | Vadim Gelfer <vadim.gelfer@gmail.com> |
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date | Fri, 24 Mar 2006 09:08:12 -0800 |
parents | b0f6af327fd4 |
children | d0db3462d568 |
rev | line source |
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941 | 1 #!/usr/bin/env python |
2 # | |
3 # An example CGI script to export multiple hgweb repos, edit as necessary | |
4 | |
1064
8d791bea49d4
Removed obsolete imports from hgwebdir.cgi
Thomas Arendsen Hein <thomas@intevation.de>
parents:
941
diff
changeset
|
5 import cgitb, sys |
941 | 6 cgitb.enable() |
7 | |
8 # sys.path.insert(0, "/path/to/python/lib") # if not a system-wide install | |
9 from mercurial import hgweb | |
10 | |
1829
b0f6af327fd4
hgwebdir: export collections of repos
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1144
diff
changeset
|
11 # The config file looks like this. You can have paths to individual |
b0f6af327fd4
hgwebdir: export collections of repos
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1144
diff
changeset
|
12 # repos, collections of repos in a directory tree, or both. |
b0f6af327fd4
hgwebdir: export collections of repos
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1144
diff
changeset
|
13 # |
941 | 14 # [paths] |
15 # virtual/path = /real/path | |
16 # virtual/path = /real/path | |
1829
b0f6af327fd4
hgwebdir: export collections of repos
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1144
diff
changeset
|
17 # |
b0f6af327fd4
hgwebdir: export collections of repos
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1144
diff
changeset
|
18 # [collections] |
b0f6af327fd4
hgwebdir: export collections of repos
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1144
diff
changeset
|
19 # /prefix/to/strip/off = /root/of/tree/full/of/repos |
b0f6af327fd4
hgwebdir: export collections of repos
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1144
diff
changeset
|
20 # |
b0f6af327fd4
hgwebdir: export collections of repos
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1144
diff
changeset
|
21 # collections example: say directory tree /foo contains repos /foo/bar, |
b0f6af327fd4
hgwebdir: export collections of repos
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1144
diff
changeset
|
22 # /foo/quux/baz. Give this config section: |
b0f6af327fd4
hgwebdir: export collections of repos
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1144
diff
changeset
|
23 # [collections] |
b0f6af327fd4
hgwebdir: export collections of repos
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1144
diff
changeset
|
24 # /foo = /foo |
b0f6af327fd4
hgwebdir: export collections of repos
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
1144
diff
changeset
|
25 # Then repos will list as bar and quux/baz. |
941 | 26 |
1144
8a39df05d2c1
Documented passing list or dict instead of config file in hgwebdir.cgi
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1064
diff
changeset
|
27 # Alternatively you can pass a list of ('virtual/path', '/real/path') tuples |
8a39df05d2c1
Documented passing list or dict instead of config file in hgwebdir.cgi
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1064
diff
changeset
|
28 # or use a dictionary with entries like 'virtual/path': '/real/path' |
8a39df05d2c1
Documented passing list or dict instead of config file in hgwebdir.cgi
Thomas Arendsen Hein <thomas@intevation.de>
parents:
1064
diff
changeset
|
29 |
941 | 30 h = hgweb.hgwebdir("hgweb.config") |
31 h.run() |