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Do not parse the entire git log to fetch new commits (takes several minutes for a few thousands commits), but only 1 week before the last known commit (#4547, #4716).

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git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3394 e93f8b46-1217-0410-a6f0-8f06a7374b81
This commit is contained in:
Jean-Philippe Lang
2010-02-07 15:17:21 +00:00
parent be2004e398
commit 3c20a9b0ac
2 changed files with 13 additions and 14 deletions
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21
app/models/repository/git.rb
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@@ -40,23 +40,26 @@ class Repository::Git < Repository
# With SCM's that have a sequential commit numbering, redmine is able to be
# clever and only fetch changesets going forward from the most recent one
# it knows about. However, with git, you never know if people have merged
# commits into the middle of the repository history, so we always have to
# parse the entire log.
# commits into the middle of the repository history, so we should parse
# the entire log. Since it's way too slow for large repositories, we only
# parse 1 week before the last known commit.
# The repository can still be fully reloaded by calling #clear_changesets
# before fetching changesets (eg. for offline resync)
def fetch_changesets
# Save ourselves an expensive operation if we're already up to date
return if scm.num_revisions == changesets.count
c = changesets.find(:first, :order => 'committed_on DESC')
since = (c ? c.committed_on - 7.days : nil)
revisions = scm.revisions('', nil, nil, :all => true)
revisions = scm.revisions('', nil, nil, :all => true, :since => since)
return if revisions.nil? || revisions.empty?
# Find revisions that redmine knows about already
existing_revisions = changesets.find(:all).map!{|c| c.scmid}
recent_changesets = changesets.find(:all, :conditions => ['committed_on >= ?', since])
# Clean out revisions that are no longer in git
Changeset.delete_all(["scmid NOT IN (?) AND repository_id = (?)", revisions.map{|r| r.scmid}, self.id])
recent_changesets.each {|c| c.destroy unless revisions.detect {|r| r.scmid.to_s == c.scmid.to_s }}
# Subtract revisions that redmine already knows about
revisions.reject!{|r| existing_revisions.include?(r.scmid)}
recent_revisions = recent_changesets.map{|c| c.scmid}
revisions.reject!{|r| recent_revisions.include?(r.scmid)}
# Save the remaining ones to the database
revisions.each{|r| r.save(self)} unless revisions.nil?