Update code to work with gitlab_git 3

Gemfile

@@ -23,7 +23,7 @@ gem 'omniauth-github'
 
 # Extracting information from a git repository
 # Provide access to Gitlab::Git library
-gem "gitlab_git", '2.3.1'
+gem "gitlab_git", "~> 3.0.0.beta1"
 
 # Ruby/Rack Git Smart-HTTP Server Handler
 gem 'gitlab-grack', '~> 1.0.1', require: 'grack'

Gemfile.lock

@@ -174,7 +174,7 @@ GEM
     gitlab-pygments.rb (0.3.2)
       posix-spawn (~> 0.3.6)
       yajl-ruby (~> 1.1.0)
-    gitlab_git (2.3.1)
+    gitlab_git (3.0.0.beta1)
       activesupport (~> 3.2.13)
       github-linguist (~> 2.3.4)
       gitlab-grit (~> 2.6.0)
@@ -574,7 +574,7 @@ DEPENDENCIES
   gitlab-gollum-lib (~> 1.0.1)
   gitlab-grack (~> 1.0.1)
   gitlab-pygments.rb (~> 0.3.2)
-  gitlab_git (= 2.3.1)
+  gitlab_git (~> 3.0.0.beta1)
   gitlab_meta (= 6.0)
   gitlab_omniauth-ldap (= 1.0.3)
   gon

app/controllers/projects/blame_controller.rb

@@ -8,7 +8,7 @@ class Projects::BlameController < Projects::ApplicationController
   before_filter :require_non_empty_project
 
   def show
-    @blob = Gitlab::Git::Blob.new(@repository, @commit.id, @ref, @path)
+    @blob = Gitlab::Git::Blob.find(@repository, @commit.id, @path)
     @blame = Gitlab::Git::Blame.new(project.repository, @commit.id, @path)
   end
 end

app/controllers/projects/blob_controller.rb

@@ -8,6 +8,6 @@ class Projects::BlobController < Projects::ApplicationController
   before_filter :require_non_empty_project
 
   def show
-    @blob = Gitlab::Git::Blob.new(@repository, @commit.id, @ref, @path)
+    @blob = Gitlab::Git::Blob.find(@repository, @commit.id, @path)
   end
 end

app/controllers/projects/raw_controller.rb

@@ -8,9 +8,9 @@ class Projects::RawController < Projects::ApplicationController
   before_filter :require_non_empty_project
 
   def show
-    @blob = Gitlab::Git::Blob.new(@repository, @commit.id, @ref, @path)
+    @blob = Gitlab::Git::Blob.find(@repository, @commit.id, @path)
 
-    if @blob.exists?
+    if @blob
       type = if @blob.mime_type =~ /html|javascript/
                'text/plain; charset=utf-8'
              else

app/controllers/projects/refs_controller.rb

@@ -24,13 +24,14 @@ class Projects::RefsController < Projects::ApplicationController
       format.js do
         @ref = params[:ref]
         define_tree_vars
+        tree
         render "tree"
       end
     end
   end
 
   def logs_tree
-    contents = @tree.entries
+    contents = tree.entries
     @logs = contents.map do |content|
       file = params[:path] ? File.join(params[:path], content.name) : content.name
       last_commit = @repo.commits(@commit.id, file, 1).last

app/controllers/projects/tree_controller.rb

@@ -8,6 +8,8 @@ class Projects::TreeController < Projects::ApplicationController
   before_filter :require_non_empty_project
 
   def show
+    return not_found! if tree.entries.empty?
+
     respond_to do |format|
       format.html
       # Disable cache so browser history works

app/helpers/blobs_helper.rb

+module BlobsHelper
+  def find_blob(repository, sha, path)
+    Gitlab::Git::Blob.find(repository, sha, path)
+  end
+end

app/helpers/tree_helper.rb

@@ -67,9 +67,9 @@ module TreeHelper
   end
 
   def tree_breadcrumbs(tree, max_links = 2)
-    if tree.path
+    if @path.present?
       part_path = ""
-      parts = tree.path.split("\/")
+      parts = @path.split("\/")
 
       yield('..', nil) if parts.count > max_links
 
@@ -78,14 +78,14 @@ module TreeHelper
         part_path = part if part_path.empty?
 
         next unless parts.last(2).include?(part) if parts.count > max_links
-        yield(part, tree_join(tree.ref, part_path))
+        yield(part, tree_join(@ref, part_path))
       end
     end
   end
 
   def up_dir_path tree
-    file = File.join(tree.path, "..")
-    tree_join(tree.ref, file)
+    file = File.join(@path, "..")
+    tree_join(@ref, file)
   end
 
   def leave_edit_message

app/models/repository.rb

 class Repository
   include Gitlab::ShellAdapter
 
-  attr_accessor :raw_repository
+  attr_accessor :raw_repository, :path_with_namespace
 
   def initialize(path_with_namespace, default_branch)
-    @raw_repository = Gitlab::Git::Repository.new(path_with_namespace, default_branch)
+    @path_with_namespace = path_with_namespace
+    @raw_repository = Gitlab::Git::Repository.new(path_to_repo)
   rescue Gitlab::Git::Repository::NoRepository
     nil
   end
 
+  def path_to_repo
+    @path_to_repo ||= File.join(Gitlab.config.gitlab_shell.repos_path, path_with_namespace + ".git")
+  end
+
   def exists?
     raw_repository
   end

app/models/tree.rb

 class Tree
-  attr_accessor :raw
+  attr_accessor :entries, :readme
 
-  def initialize(repository, sha, ref = nil, path = nil)
-    @raw = Gitlab::Git::Tree.new(repository, sha, ref, path)
+  def initialize(repository, sha, path = '/')
+    path = '/' if path.blank?
+    git_repo = repository.raw_repository
+    @entries = Gitlab::Git::Tree.where(git_repo, sha, path)
+
+    if readme_tree = @entries.find(&:readme?)
+      @readme = Gitlab::Git::Blob.find(git_repo, sha, readme_tree.name)
+    end
   end
 
-  def method_missing(m, *args, &block)
-    @raw.send(m, *args, &block)
+  def trees
+    @entries.select(&:dir?)
   end
 
-  def respond_to?(method)
-    return true if @raw.respond_to?(method)
+  def blobs
+    @entries.select(&:file?)
+  end
 
-    super
+  def submodules
+    @entries.select(&:submodule?)
   end
 end

app/views/projects/commits/_diffs.html.haml

@@ -37,9 +37,9 @@
   - unless @suppress_diff
     - diffs.each_with_index do |diff, i|
       - next if diff.diff.empty?
-      - file = Gitlab::Git::Blob.new(project.repository, @commit.id, @ref, diff.new_path)
-      - file = Gitlab::Git::Blob.new(project.repository, @commit.parent_id, @ref, diff.old_path) unless file.exists?
-      - next unless file.exists?
+      - file = find_blob(project.repository, @commit.id, diff.new_path)
+      - file = find_blob(project.repository, @commit.parent_id, diff.old_path) unless file
+      - next unless file
       .file{id: "diff-#{i}"}
         .header
           - if diff.deleted_file
@@ -64,7 +64,7 @@
           - if file.text?
             = render "projects/commits/text_file", diff: diff, index: i
           - elsif file.image?
-            - old_file = Gitlab::Git::Blob.new(project.repository, @commit.parent_id, @ref, diff.old_path) if @commit.parent_id
+            - old_file = find_blob(project.repository, @commit.parent_id, diff.old_path) if @commit.parent_id
             = render "projects/commits/image", diff: diff, old_file: old_file, file: file, index: i
           - else
             %p.nothing_here_message No preview for this file type

app/views/projects/tree/_tree.html.haml

@@ -28,7 +28,7 @@
             = truncate(@commit.title, length: 50)
         %th= link_to "history", project_commits_path(@project, @id), class: "pull-right"
 
-    - if tree.up_dir?
+    - if @path.present?
       %tr.tree-item
         %td.tree-item-file-name
           = image_tag "file_empty.png", size: '16x16'

config/initializers/5_backend.rb

@@ -6,6 +6,3 @@ require Rails.root.join("lib", "gitlab", "backend", "shell")
 
 # GitLab shell adapter
 require Rails.root.join("lib", "gitlab", "backend", "shell_adapter")
-
-# Gitlab Git repos path
-Gitlab::Git::Repository.repos_path = Gitlab.config.gitlab_shell.repos_path

lib/extracts_path.rb

@@ -86,7 +86,6 @@ module ExtractsPath
   # - @ref    - A string representing the ref (e.g., the branch, tag, or commit SHA)
   # - @path   - A string representing the filesystem path
   # - @commit - A Commit representing the commit from the given ref
-  # - @tree   - A Tree representing the tree at the given ref/path
   #
   # If the :id parameter appears to be requesting a specific response format,
   # that will be handled as well.
@@ -107,15 +106,18 @@ module ExtractsPath
     else
       @commit = @repo.commit(@options[:extended_sha1])
     end
-    @tree = Tree.new(@repo, @commit.id, @ref, @path)
+
     @hex_path = Digest::SHA1.hexdigest(@path)
     @logs_path = logs_file_project_ref_path(@project, @ref, @path)
 
-    raise InvalidPathError unless @tree.exists?
   rescue RuntimeError, NoMethodError, InvalidPathError
     not_found!
   end
 
+  def tree
+    @tree ||= Tree.new(@repo, @commit.id, @path)
+  end
+
   private
 
   def get_id