comparison .svn/pristine/4b/4b92ab107a3c108b2ff86abcfa2bd776a779be36.svn-base @ 1517:dffacf8a6908 redmine-2.5

Update to Redmine SVN revision 13367 on 2.5-stable branch

+# Redmine - project management software
+# Copyright (C) 2006-2014  Jean-Philippe Lang
+# Copyright (C) 2007  Patrick Aljord patcito@ŋmail.com
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+require 'redmine/scm/adapters/git_adapter'
+
+class Repository::Git < Repository
+  attr_protected :root_url
+  validates_presence_of :url
+
+  def self.human_attribute_name(attribute_key_name, *args)
+    attr_name = attribute_key_name.to_s
+    if attr_name == "url"
+      attr_name = "path_to_repository"
+    end
+    super(attr_name, *args)
+  end
+
+  def self.scm_adapter_class
+    Redmine::Scm::Adapters::GitAdapter
+  end
+
+  def self.scm_name
+    'Git'
+  end
+
+  def report_last_commit
+    extra_report_last_commit
+  end
+
+  def extra_report_last_commit
+    return false if extra_info.nil?
+    v = extra_info["extra_report_last_commit"]
+    return false if v.nil?
+    v.to_s != '0'
+  end
+
+  def supports_directory_revisions?
+    true
+  end
+
+  def supports_revision_graph?
+    true
+  end
+
+  def repo_log_encoding
+    'UTF-8'
+  end
+
+  # Returns the identifier for the given git changeset
+  def self.changeset_identifier(changeset)
+    changeset.scmid
+  end
+
+  # Returns the readable identifier for the given git changeset
+  def self.format_changeset_identifier(changeset)
+    changeset.revision[0, 8]
+  end
+
+  def branches
+    scm.branches
+  end
+
+  def tags
+    scm.tags
+  end
+
+  def default_branch
+    scm.default_branch
+  rescue Exception => e
+    logger.error "git: error during get default branch: #{e.message}"
+    nil
+  end
+
+  def find_changeset_by_name(name)
+    if name.present?
+      changesets.where(:revision => name.to_s).first ||
+        changesets.where('scmid LIKE ?', "#{name}%").first
+    end
+  end
+
+  def scm_entries(path=nil, identifier=nil)
+    scm.entries(path, identifier, :report_last_commit => extra_report_last_commit)
+  end
+  protected :scm_entries
+
+  # With SCMs that have a sequential commit numbering,
+  # such as Subversion and Mercurial,
+  # Redmine is able to be clever and only fetch changesets
+  # going forward from the most recent one it knows about.
+  #
+  # However, Git does not have a sequential commit numbering.
+  #
+  # In order to fetch only new adding revisions,
+  # Redmine needs to save "heads".
+  #
+  # In Git and Mercurial, revisions are not in date order.
+  # Redmine Mercurial fixed issues.
+  #    * Redmine Takes Too Long On Large Mercurial Repository
+  #      http://www.redmine.org/issues/3449
+  #    * Sorting for changesets might go wrong on Mercurial repos
+  #      http://www.redmine.org/issues/3567
+  #
+  # Database revision column is text, so Redmine can not sort by revision.
+  # Mercurial has revision number, and revision number guarantees revision order.
+  # Redmine Mercurial model stored revisions ordered by database id to database.
+  # So, Redmine Mercurial model can use correct ordering revisions.
+  #
+  # Redmine Mercurial adapter uses "hg log -r 0:tip --limit 10"
+  # to get limited revisions from old to new.
+  # But, Git 1.7.3.4 does not support --reverse with -n or --skip.
+  #
+  # The repository can still be fully reloaded by calling #clear_changesets
+  # before fetching changesets (eg. for offline resync)
+  def fetch_changesets
+    scm_brs = branches
+    return if scm_brs.nil? || scm_brs.empty?
+
+    h1 = extra_info || {}
+    h  = h1.dup
+    repo_heads = scm_brs.map{ |br| br.scmid }
+    h["heads"] ||= []
+    prev_db_heads = h["heads"].dup
+    if prev_db_heads.empty?
+      prev_db_heads += heads_from_branches_hash
+    end
+    return if prev_db_heads.sort == repo_heads.sort
+
+    h["db_consistent"]  ||= {}
+    if changesets.count == 0
+      h["db_consistent"]["ordering"] = 1
+      merge_extra_info(h)
+      self.save
+    elsif ! h["db_consistent"].has_key?("ordering")
+      h["db_consistent"]["ordering"] = 0
+      merge_extra_info(h)
+      self.save
+    end
+    save_revisions(prev_db_heads, repo_heads)
+  end
+
+  def save_revisions(prev_db_heads, repo_heads)
+    h = {}
+    opts = {}
+    opts[:reverse]  = true
+    opts[:excludes] = prev_db_heads
+    opts[:includes] = repo_heads
+
+    revisions = scm.revisions('', nil, nil, opts)
+    return if revisions.blank?
+
+    # Make the search for existing revisions in the database in a more sufficient manner
+    #
+    # Git branch is the reference to the specific revision.
+    # Git can *delete* remote branch and *re-push* branch.
+    #
+    #  $ git push remote :branch
+    #  $ git push remote branch
+    #
+    # After deleting branch, revisions remain in repository until "git gc".
+    # On git 1.7.2.3, default pruning date is 2 weeks.
+    # So, "git log --not deleted_branch_head_revision" return code is 0.
+    #
+    # After re-pushing branch, "git log" returns revisions which are saved in database.
+    # So, Redmine needs to scan revisions and database every time.
+    #
+    # This is replacing the one-after-one queries.
+    # Find all revisions, that are in the database, and then remove them
+    # from the revision array.
+    # Then later we won't need any conditions for db existence.
+    # Query for several revisions at once, and remove them
+    # from the revisions array, if they are there.
+    # Do this in chunks, to avoid eventual memory problems
+    # (in case of tens of thousands of commits).
+    # If there are no revisions (because the original code's algorithm filtered them),
+    # then this part will be stepped over.
+    # We make queries, just if there is any revision.
+    limit = 100
+    offset = 0
+    revisions_copy = revisions.clone # revisions will change
+    while offset < revisions_copy.size
+      scmids = revisions_copy.slice(offset, limit).map{|x| x.scmid}
+      recent_changesets_slice = changesets.where(:scmid => scmids)
+      # Subtract revisions that redmine already knows about
+      recent_revisions = recent_changesets_slice.map{|c| c.scmid}
+      revisions.reject!{|r| recent_revisions.include?(r.scmid)}
+      offset += limit
+    end
+    revisions.each do |rev|
+      transaction do
+        # There is no search in the db for this revision, because above we ensured,
+        # that it's not in the db.
+        save_revision(rev)
+      end
+    end
+    h["heads"] = repo_heads.dup
+    merge_extra_info(h)
+    self.save
+  end
+  private :save_revisions
+
+  def save_revision(rev)
+    parents = (rev.parents || []).collect{|rp| find_changeset_by_name(rp)}.compact
+    changeset = Changeset.create(
+              :repository   => self,
+              :revision     => rev.identifier,
+              :scmid        => rev.scmid,
+              :committer    => rev.author,
+              :committed_on => rev.time,
+              :comments     => rev.message,
+              :parents      => parents
+              )
+    unless changeset.new_record?
+      rev.paths.each { |change| changeset.create_change(change) }
+    end
+    changeset
+  end
+  private :save_revision
+
+  def heads_from_branches_hash
+    h1 = extra_info || {}
+    h  = h1.dup
+    h["branches"] ||= {}
+    h['branches'].map{|br, hs| hs['last_scmid']}
+  end
+
+  def latest_changesets(path,rev,limit=10)
+    revisions = scm.revisions(path, nil, rev, :limit => limit, :all => false)
+    return [] if revisions.nil? || revisions.empty?
+    changesets.where(:scmid => revisions.map {|c| c.scmid}).all
+  end
+
+  def clear_extra_info_of_changesets
+    return if extra_info.nil?
+    v = extra_info["extra_report_last_commit"]
+    write_attribute(:extra_info, nil)
+    h = {}
+    h["extra_report_last_commit"] = v
+    merge_extra_info(h)
+    self.save
+  end
+  private :clear_extra_info_of_changesets
+end