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git-remote-mediawiki: bugfix for pages w/ >500 revisions

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Mediawiki introduces a new API for queries w/ more than 500 results in
version 1.21. That change triggered an infinite loop while cloning a
mediawiki with such a page.

The latest API renamed and moved the "continuing" information in the
response, necessary to build the next query. The code failed to retrieve
that information but still detected that it was in a "continuing
query". As a result, it launched the same query over and over again.

If a "continuing" information is detected in the response (old or new),
the next query is updated accordingly. If not, we quit assuming it's not
a continuing query.

Reported-by: Benjamin Cathey
Signed-off-by: Benoit Person <benoit.person@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
This commit is contained in:
Benoit Person
2013-09-24 21:32:30 +02:00
committed by Jonathan Nieder
parent a0d3f1090d
commit 1d905f74fd
2 changed files with 35 additions and 2 deletions
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14
contrib/mw-to-git/git-remote-mediawiki.perl
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@ -622,6 +622,9 @@ sub fetch_mw_revisions_for_page {
rvstartid => $fetch_from,
rvlimit => 500,
pageids => $id,
# Let MediaWiki know that we support the latest API.
continue => '',
};
my $revnum = 0;
@ -637,8 +640,15 @@ sub fetch_mw_revisions_for_page {
push(@page_revs, $page_rev_ids);
$revnum++;
}
last if (!$result->{'query-continue'});
$query->{rvstartid} = $result->{'query-continue'}->{revisions}->{rvstartid};
if ($result->{'query-continue'}) { # For legacy APIs
$query->{rvstartid} = $result->{'query-continue'}->{revisions}->{rvstartid};
} elsif ($result->{continue}) { # For newer APIs
$query->{rvstartid} = $result->{continue}->{rvcontinue};
$query->{continue} = $result->{continue}->{continue};
} else {
last;
}
}
if ($shallow_import && @page_revs) {
print {*STDERR} " Found 1 revision (shallow import).\n";