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|
require 'securerandom'
class Repository
class CommitError < StandardError; end
# Files to use as a project avatar in case no avatar was uploaded via the web
# UI.
AVATAR_FILES = %w{logo.png logo.jpg logo.gif}
include Gitlab::ShellAdapter
attr_accessor :path_with_namespace, :project
def self.clean_old_archives
Gitlab::Metrics.measure(:clean_old_archives) do
repository_downloads_path = Gitlab.config.gitlab.repository_downloads_path
return unless File.directory?(repository_downloads_path)
Gitlab::Popen.popen(%W(find #{repository_downloads_path} -not -path #{repository_downloads_path} -mmin +120 -delete))
end
end
def initialize(path_with_namespace, project)
@path_with_namespace = path_with_namespace
@project = project
end
def raw_repository
return nil unless path_with_namespace
@raw_repository ||= Gitlab::Git::Repository.new(path_to_repo)
end
def update_autocrlf_option
raw_repository.autocrlf = :input if raw_repository.autocrlf != :input
end
# Return absolute path to repository
def path_to_repo
@path_to_repo ||= File.expand_path(
File.join(Gitlab.config.gitlab_shell.repos_path, path_with_namespace + ".git")
)
end
def exists?
return @exists unless @exists.nil?
@exists = cache.fetch(:exists?) do
begin
raw_repository && raw_repository.rugged ? true : false
rescue Gitlab::Git::Repository::NoRepository
false
end
end
end
def empty?
return @empty unless @empty.nil?
@empty = cache.fetch(:empty?) { raw_repository.empty? }
end
#
# Git repository can contains some hidden refs like:
# /refs/notes/*
# /refs/git-as-svn/*
# /refs/pulls/*
# This refs by default not visible in project page and not cloned to client side.
#
# This method return true if repository contains some content visible in project page.
#
def has_visible_content?
return @has_visible_content unless @has_visible_content.nil?
@has_visible_content = cache.fetch(:has_visible_content?) do
branch_count > 0
end
end
def commit(id = 'HEAD')
return nil unless exists?
commit = Gitlab::Git::Commit.find(raw_repository, id)
commit = ::Commit.new(commit, @project) if commit
commit
rescue Rugged::OdbError
nil
end
def commits(ref, path: nil, limit: nil, offset: nil, skip_merges: false, after: nil, before: nil)
options = {
repo: raw_repository,
ref: ref,
path: path,
limit: limit,
offset: offset,
after: after,
before: before,
# --follow doesn't play well with --skip. See:
# https://gitlab.com/gitlab-org/gitlab-ce/issues/3574#note_3040520
follow: false,
skip_merges: skip_merges
}
commits = Gitlab::Git::Commit.where(options)
commits = Commit.decorate(commits, @project) if commits.present?
commits
end
def commits_between(from, to)
commits = Gitlab::Git::Commit.between(raw_repository, from, to)
commits = Commit.decorate(commits, @project) if commits.present?
commits
end
def find_commits_by_message(query, ref = nil, path = nil, limit = 1000, offset = 0)
ref ||= root_ref
# Limited to 1000 commits for now, could be parameterized?
args = %W(#{Gitlab.config.git.bin_path} log #{ref} --pretty=%H --skip #{offset} --max-count #{limit} --grep=#{query})
args = args.concat(%W(-- #{path})) if path.present?
git_log_results = Gitlab::Popen.popen(args, path_to_repo).first.lines.map(&:chomp)
commits = git_log_results.map { |c| commit(c) }
commits
end
def find_branch(name)
raw_repository.branches.find { |branch| branch.name == name }
end
def find_tag(name)
raw_repository.tags.find { |tag| tag.name == name }
end
def add_branch(user, branch_name, target)
oldrev = Gitlab::Git::BLANK_SHA
ref = Gitlab::Git::BRANCH_REF_PREFIX + branch_name
target = commit(target).try(:id)
return false unless target
GitHooksService.new.execute(user, path_to_repo, oldrev, target, ref) do
rugged.branches.create(branch_name, target)
end
after_create_branch
find_branch(branch_name)
end
def add_tag(user, tag_name, target, message = nil)
oldrev = Gitlab::Git::BLANK_SHA
ref = Gitlab::Git::TAG_REF_PREFIX + tag_name
target = commit(target).try(:id)
return false unless target
options = { message: message, tagger: user_to_committer(user) } if message
GitHooksService.new.execute(user, path_to_repo, oldrev, target, ref) do
rugged.tags.create(tag_name, target, options)
end
find_tag(tag_name)
end
def rm_branch(user, branch_name)
before_remove_branch
branch = find_branch(branch_name)
oldrev = branch.try(:target)
newrev = Gitlab::Git::BLANK_SHA
ref = Gitlab::Git::BRANCH_REF_PREFIX + branch_name
GitHooksService.new.execute(user, path_to_repo, oldrev, newrev, ref) do
rugged.branches.delete(branch_name)
end
after_remove_branch
true
end
def rm_tag(tag_name)
before_remove_tag
begin
rugged.tags.delete(tag_name)
true
rescue Rugged::ReferenceError
false
end
end
def branch_names
cache.fetch(:branch_names) { branches.map(&:name) }
end
def tag_names
cache.fetch(:tag_names) { raw_repository.tag_names }
end
def commit_count
cache.fetch(:commit_count) do
begin
raw_repository.commit_count(self.root_ref)
rescue
0
end
end
end
def branch_count
@branch_count ||= cache.fetch(:branch_count) { branches.size }
end
def tag_count
@tag_count ||= cache.fetch(:tag_count) { raw_repository.rugged.tags.count }
end
# Return repo size in megabytes
# Cached in redis
def size
cache.fetch(:size) { raw_repository.size }
end
def diverging_commit_counts(branch)
root_ref_hash = raw_repository.rev_parse_target(root_ref).oid
cache.fetch(:"diverging_commit_counts_#{branch.name}") do
# Rugged seems to throw a `ReferenceError` when given branch_names rather
# than SHA-1 hashes
number_commits_behind = raw_repository.
count_commits_between(branch.target, root_ref_hash)
number_commits_ahead = raw_repository.
count_commits_between(root_ref_hash, branch.target)
{ behind: number_commits_behind, ahead: number_commits_ahead }
end
end
def cache_keys
%i(size branch_names tag_names commit_count
readme version contribution_guide changelog
license_blob license_key)
end
def build_cache
cache_keys.each do |key|
unless cache.exist?(key)
send(key)
end
end
end
def expire_tags_cache
cache.expire(:tag_names)
@tags = nil
end
def expire_branches_cache
cache.expire(:branch_names)
@local_branches = nil
end
def expire_cache(branch_name = nil, revision = nil)
cache_keys.each do |key|
cache.expire(key)
end
expire_branch_cache(branch_name)
expire_avatar_cache(branch_name, revision)
# This ensures this particular cache is flushed after the first commit to a
# new repository.
expire_emptiness_caches if empty?
expire_branch_count_cache
expire_tag_count_cache
end
def expire_branch_cache(branch_name = nil)
# When we push to the root branch we have to flush the cache for all other
# branches as their statistics are based on the commits relative to the
# root branch.
if !branch_name || branch_name == root_ref
branches.each do |branch|
cache.expire(:"diverging_commit_counts_#{branch.name}")
end
# In case a commit is pushed to a non-root branch we only have to flush the
# cache for said branch.
else
cache.expire(:"diverging_commit_counts_#{branch_name}")
end
end
def expire_root_ref_cache
cache.expire(:root_ref)
@root_ref = nil
end
# Expires the cache(s) used to determine if a repository is empty or not.
def expire_emptiness_caches
cache.expire(:empty?)
@empty = nil
expire_has_visible_content_cache
end
def expire_has_visible_content_cache
cache.expire(:has_visible_content?)
@has_visible_content = nil
end
def expire_branch_count_cache
cache.expire(:branch_count)
@branch_count = nil
end
def expire_tag_count_cache
cache.expire(:tag_count)
@tag_count = nil
end
def lookup_cache
@lookup_cache ||= {}
end
def expire_branch_names
cache.expire(:branch_names)
end
def expire_avatar_cache(branch_name = nil, revision = nil)
# Avatars are pulled from the default branch, thus if somebody pushes to a
# different branch there's no need to expire anything.
return if branch_name && branch_name != root_ref
# We don't want to flush the cache if the commit didn't actually make any
# changes to any of the possible avatar files.
if revision && commit = self.commit(revision)
return unless commit.diffs.
any? { |diff| AVATAR_FILES.include?(diff.new_path) }
end
cache.expire(:avatar)
@avatar = nil
end
def expire_exists_cache
cache.expire(:exists?)
@exists = nil
end
# Runs code after a repository has been created.
def after_create
expire_exists_cache
expire_root_ref_cache
expire_emptiness_caches
end
# Runs code just before a repository is deleted.
def before_delete
expire_exists_cache
expire_cache if exists?
expire_root_ref_cache
expire_emptiness_caches
expire_exists_cache
end
# Runs code just before the HEAD of a repository is changed.
def before_change_head
# Cached divergent commit counts are based on repository head
expire_branch_cache
expire_root_ref_cache
end
# Runs code before pushing (= creating or removing) a tag.
def before_push_tag
expire_cache
expire_tags_cache
expire_tag_count_cache
end
# Runs code before removing a tag.
def before_remove_tag
expire_tags_cache
expire_tag_count_cache
end
def before_import
expire_emptiness_caches
expire_exists_cache
end
# Runs code after a repository has been forked/imported.
def after_import
expire_emptiness_caches
expire_exists_cache
end
# Runs code after a new commit has been pushed.
def after_push_commit(branch_name, revision)
expire_cache(branch_name, revision)
end
# Runs code after a new branch has been created.
def after_create_branch
expire_branches_cache
expire_has_visible_content_cache
expire_branch_count_cache
end
# Runs code before removing an existing branch.
def before_remove_branch
expire_branches_cache
end
# Runs code after an existing branch has been removed.
def after_remove_branch
expire_has_visible_content_cache
expire_branch_count_cache
expire_branches_cache
end
def method_missing(m, *args, &block)
if m == :lookup && !block_given?
lookup_cache[m] ||= {}
lookup_cache[m][args.join(":")] ||= raw_repository.send(m, *args, &block)
else
raw_repository.send(m, *args, &block)
end
end
def respond_to_missing?(method, include_private = false)
raw_repository.respond_to?(method, include_private) || super
end
def blob_at(sha, path)
unless Gitlab::Git.blank_ref?(sha)
Gitlab::Git::Blob.find(self, sha, path)
end
end
def blob_by_oid(oid)
Gitlab::Git::Blob.raw(self, oid)
end
def readme
cache.fetch(:readme) { tree(:head).readme }
end
def version
cache.fetch(:version) do
tree(:head).blobs.find do |file|
file.name.downcase == 'version'
end
end
end
def contribution_guide
cache.fetch(:contribution_guide) do
tree(:head).blobs.find do |file|
file.contributing?
end
end
end
def changelog
cache.fetch(:changelog) do
tree(:head).blobs.find do |file|
file.name =~ /\A(changelog|history|changes|news)/i
end
end
end
def license_blob
return nil if !exists? || empty?
cache.fetch(:license_blob) do
tree(:head).blobs.find do |file|
file.name =~ /\A(licen[sc]e|copying)(\..+|\z)/i
end
end
end
def license_key
return nil if !exists? || empty?
cache.fetch(:license_key) do
Licensee.license(path).try(:key)
end
end
def gitlab_ci_yml
return nil if !exists? || empty?
@gitlab_ci_yml ||= tree(:head).blobs.find do |file|
file.name == '.gitlab-ci.yml'
end
rescue Rugged::ReferenceError
# For unknow reason spinach scenario "Scenario: I change project path"
# lead to "Reference 'HEAD' not found" exception from Repository#empty?
nil
end
def head_commit
@head_commit ||= commit(self.root_ref)
end
def head_tree
@head_tree ||= Tree.new(self, head_commit.sha, nil)
end
def tree(sha = :head, path = nil)
if sha == :head
if path.nil?
return head_tree
else
sha = head_commit.sha
end
end
Tree.new(self, sha, path)
end
def blob_at_branch(branch_name, path)
last_commit = commit(branch_name)
if last_commit
blob_at(last_commit.sha, path)
else
nil
end
end
# Returns url for submodule
#
# Ex.
# @repository.submodule_url_for('master', 'rack')
# # => git@localhost:rack.git
#
def submodule_url_for(ref, path)
if submodules(ref).any?
submodule = submodules(ref)[path]
if submodule
submodule['url']
end
end
end
def last_commit_for_path(sha, path)
args = %W(#{Gitlab.config.git.bin_path} rev-list --max-count=1 #{sha} -- #{path})
sha = Gitlab::Popen.popen(args, path_to_repo).first.strip
commit(sha)
end
def next_branch(name, opts={})
branch_ids = self.branch_names.map do |n|
next 1 if n == name
result = n.match(/\A#{name}-([0-9]+)\z/)
result[1].to_i if result
end.compact
highest_branch_id = branch_ids.max || 0
return name if opts[:mild] && 0 == highest_branch_id
"#{name}-#{highest_branch_id + 1}"
end
# Remove archives older than 2 hours
def branches_sorted_by(value)
case value
when 'recently_updated'
branches.sort do |a, b|
commit(b.target).committed_date <=> commit(a.target).committed_date
end
when 'last_updated'
branches.sort do |a, b|
commit(a.target).committed_date <=> commit(b.target).committed_date
end
else
branches
end
end
def contributors
commits = self.commits(nil, limit: 2000, offset: 0, skip_merges: true)
commits.group_by(&:author_email).map do |email, commits|
contributor = Gitlab::Contributor.new
contributor.email = email
commits.each do |commit|
if contributor.name.blank?
contributor.name = commit.author_name
end
contributor.commits += 1
end
contributor
end
end
def blob_for_diff(commit, diff)
blob_at(commit.id, diff.file_path)
end
def prev_blob_for_diff(commit, diff)
if commit.parent_id
blob_at(commit.parent_id, diff.old_path)
end
end
def refs_contains_sha(ref_type, sha)
args = %W(#{Gitlab.config.git.bin_path} #{ref_type} --contains #{sha})
names = Gitlab::Popen.popen(args, path_to_repo).first
if names.respond_to?(:split)
names = names.split("\n").map(&:strip)
names.each do |name|
name.slice! '* '
end
names
else
[]
end
end
def branch_names_contains(sha)
refs_contains_sha('branch', sha)
end
def tag_names_contains(sha)
refs_contains_sha('tag', sha)
end
def local_branches
@local_branches ||= rugged.branches.each(:local).map do |branch|
Gitlab::Git::Branch.new(branch.name, branch.target)
end
end
alias_method :branches, :local_branches
def tags
@tags ||= raw_repository.tags
end
def root_ref
@root_ref ||= cache.fetch(:root_ref) { raw_repository.root_ref }
end
def commit_dir(user, path, message, branch)
commit_with_hooks(user, branch) do |ref|
committer = user_to_committer(user)
options = {}
options[:committer] = committer
options[:author] = committer
options[:commit] = {
message: message,
branch: ref,
}
raw_repository.mkdir(path, options)
end
end
def commit_file(user, path, content, message, branch, update)
commit_with_hooks(user, branch) do |ref|
committer = user_to_committer(user)
options = {}
options[:committer] = committer
options[:author] = committer
options[:commit] = {
message: message,
branch: ref,
}
options[:file] = {
content: content,
path: path,
update: update
}
Gitlab::Git::Blob.commit(raw_repository, options)
end
end
def remove_file(user, path, message, branch)
commit_with_hooks(user, branch) do |ref|
committer = user_to_committer(user)
options = {}
options[:committer] = committer
options[:author] = committer
options[:commit] = {
message: message,
branch: ref
}
options[:file] = {
path: path
}
Gitlab::Git::Blob.remove(raw_repository, options)
end
end
def user_to_committer(user)
{
email: user.email,
name: user.name,
time: Time.now
}
end
def can_be_merged?(source_sha, target_branch)
our_commit = rugged.branches[target_branch].target
their_commit = rugged.lookup(source_sha)
if our_commit && their_commit
!rugged.merge_commits(our_commit, their_commit).conflicts?
else
false
end
end
def merge(user, source_sha, target_branch, options = {})
our_commit = rugged.branches[target_branch].target
their_commit = rugged.lookup(source_sha)
raise "Invalid merge target" if our_commit.nil?
raise "Invalid merge source" if their_commit.nil?
merge_index = rugged.merge_commits(our_commit, their_commit)
return false if merge_index.conflicts?
commit_with_hooks(user, target_branch) do |ref|
actual_options = options.merge(
parents: [our_commit, their_commit],
tree: merge_index.write_tree(rugged),
update_ref: ref
)
Rugged::Commit.create(rugged, actual_options)
end
end
def revert(user, commit, base_branch, revert_tree_id = nil)
source_sha = find_branch(base_branch).target
revert_tree_id ||= check_revert_content(commit, base_branch)
return false unless revert_tree_id
commit_with_hooks(user, base_branch) do |ref|
committer = user_to_committer(user)
source_sha = Rugged::Commit.create(rugged,
message: commit.revert_message,
author: committer,
committer: committer,
tree: revert_tree_id,
parents: [rugged.lookup(source_sha)],
update_ref: ref)
end
end
def cherry_pick(user, commit, base_branch, cherry_pick_tree_id = nil)
source_sha = find_branch(base_branch).target
cherry_pick_tree_id ||= check_cherry_pick_content(commit, base_branch)
return false unless cherry_pick_tree_id
commit_with_hooks(user, base_branch) do |ref|
committer = user_to_committer(user)
source_sha = Rugged::Commit.create(rugged,
message: commit.message,
author: {
email: commit.author_email,
name: commit.author_name,
time: commit.authored_date
},
committer: committer,
tree: cherry_pick_tree_id,
parents: [rugged.lookup(source_sha)],
update_ref: ref)
end
end
def check_revert_content(commit, base_branch)
source_sha = find_branch(base_branch).target
args = [commit.id, source_sha]
args << { mainline: 1 } if commit.merge_commit?
revert_index = rugged.revert_commit(*args)
return false if revert_index.conflicts?
tree_id = revert_index.write_tree(rugged)
return false unless diff_exists?(source_sha, tree_id)
tree_id
end
def check_cherry_pick_content(commit, base_branch)
source_sha = find_branch(base_branch).target
args = [commit.id, source_sha]
args << 1 if commit.merge_commit?
cherry_pick_index = rugged.cherrypick_commit(*args)
return false if cherry_pick_index.conflicts?
tree_id = cherry_pick_index.write_tree(rugged)
return false unless diff_exists?(source_sha, tree_id)
tree_id
end
def diff_exists?(sha1, sha2)
rugged.diff(sha1, sha2).size > 0
end
def merged_to_root_ref?(branch_name)
branch_commit = commit(branch_name)
root_ref_commit = commit(root_ref)
if branch_commit
is_ancestor?(branch_commit.id, root_ref_commit.id)
else
nil
end
end
def merge_base(first_commit_id, second_commit_id)
first_commit_id = commit(first_commit_id).try(:id) || first_commit_id
second_commit_id = commit(second_commit_id).try(:id) || second_commit_id
rugged.merge_base(first_commit_id, second_commit_id)
rescue Rugged::ReferenceError
nil
end
def is_ancestor?(ancestor_id, descendant_id)
merge_base(ancestor_id, descendant_id) == ancestor_id
end
def search_files(query, ref)
offset = 2
args = %W(#{Gitlab.config.git.bin_path} grep -i -I -n --before-context #{offset} --after-context #{offset} -e #{Regexp.escape(query)} #{ref || root_ref})
Gitlab::Popen.popen(args, path_to_repo).first.scrub.split(/^--$/)
end
def parse_search_result(result)
ref = nil
filename = nil
basename = nil
startline = 0
result.each_line.each_with_index do |line, index|
if line =~ /^.*:.*:\d+:/
ref, filename, startline = line.split(':')
startline = startline.to_i - index
extname = File.extname(filename)
basename = filename.sub(/#{extname}$/, '')
break
end
end
data = ""
result.each_line do |line|
data << line.sub(ref, '').sub(filename, '').sub(/^:-\d+-/, '').sub(/^::\d+:/, '')
end
OpenStruct.new(
filename: filename,
basename: basename,
ref: ref,
startline: startline,
data: data
)
end
def fetch_ref(source_path, source_ref, target_ref)
args = %W(#{Gitlab.config.git.bin_path} fetch --no-tags -f #{source_path} #{source_ref}:#{target_ref})
Gitlab::Popen.popen(args, path_to_repo)
end
def with_tmp_ref(oldrev = nil)
random_string = SecureRandom.hex
tmp_ref = "refs/tmp/#{random_string}/head"
if oldrev && !Gitlab::Git.blank_ref?(oldrev)
rugged.references.create(tmp_ref, oldrev)
end
# Make commit in tmp ref
yield(tmp_ref)
ensure
rugged.references.delete(tmp_ref) rescue nil
end
def commit_with_hooks(current_user, branch)
update_autocrlf_option
oldrev = Gitlab::Git::BLANK_SHA
ref = Gitlab::Git::BRANCH_REF_PREFIX + branch
target_branch = find_branch(branch)
was_empty = empty?
if !was_empty && target_branch
oldrev = target_branch.target
end
with_tmp_ref(oldrev) do |tmp_ref|
# Make commit in tmp ref
newrev = yield(tmp_ref)
unless newrev
raise CommitError.new('Failed to create commit')
end
GitHooksService.new.execute(current_user, path_to_repo, oldrev, newrev, ref) do
if was_empty || !target_branch
# Create branch
rugged.references.create(ref, newrev)
else
# Update head
current_head = find_branch(branch).target
# Make sure target branch was not changed during pre-receive hook
if current_head == oldrev
rugged.references.update(ref, newrev)
else
raise CommitError.new('Commit was rejected because branch received new push')
end
end
end
newrev
end
end
def ls_files(ref)
actual_ref = ref || root_ref
raw_repository.ls_files(actual_ref)
end
def copy_gitattributes(ref)
actual_ref = ref || root_ref
begin
raw_repository.copy_gitattributes(actual_ref)
true
rescue Gitlab::Git::Repository::InvalidRef
false
end
end
def main_language
return if empty? || rugged.head_unborn?
Linguist::Repository.new(rugged, rugged.head.target_id).language
end
def avatar
return nil unless exists?
@avatar ||= cache.fetch(:avatar) do
AVATAR_FILES.find do |file|
blob_at_branch('master', file)
end
end
end
private
def cache
@cache ||= RepositoryCache.new(path_with_namespace)
end
end
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