Merge branch 'revert-satellites' into 'master'

Revert satellites

Return satellites to master for 7.14

We remove satellites in next release (8.0)

See merge request !1136

CHANGELOG

@@ -45,10 +45,7 @@ v 7.14.0 (unreleased)
   - Remove redis-store TTL monkey patch
   - Add support for CI skipped status
   - Fetch code from forks to refs/merge-requests/:id/head when merge request created
-  - Remove satellites
   - Remove comments and email addresses when publicly exposing ssh keys (Zeger-Jan van de Weg)
-  - Improve MR merge widget text and UI consistency.
-  - Improve text in MR "How To Merge" modal.
   - Cache all events
   - Order commits by date when comparing branches
   - Fix bug causing error when the target branch of a symbolic ref was deleted
@@ -199,7 +196,6 @@ v 7.12.0
   - Add SAML support as an omniauth provider
   - Allow to configure a URL to show after sign out
   - Add an option to automatically sign-in with an Omniauth provider
-  - Better performance for web editor (switched from satellites to rugged)
   - GitLab CI service sends .gitlab-ci.yml in each push call
   - When remove project - move repository and schedule it removal
   - Improve group removing logic

Gemfile.lock

@@ -875,4 +875,4 @@ DEPENDENCIES
   wikicloth (= 0.8.1)
 BUNDLED WITH
-   1.10.4
+   1.10.5

app/assets/javascripts/merge_request_widget.js.coffee

@@ -19,7 +19,7 @@ class @MergeRequestWidget
           when 'merged'
             location.reload()
           else
-            setTimeout(merge_request_widget.mergeInProgress, 2000)
+            setTimeout(merge_request_widget.mergeInProgress, 3000)
       dataType: 'json'
   getMergeStatus: ->
@@ -49,8 +49,10 @@ class @MergeRequestWidget
       @setMergeButtonClass('btn-danger')
   showCiCoverage: (coverage) ->
-    text = 'Coverage ' + coverage + '%'
-    $('.ci_widget:visible .ci-coverage').text(text)
+    cov_html = $('<span>')
+    cov_html.addClass('ci-coverage')
+    cov_html.text('Coverage ' + coverage + '%')
+    $('.ci_widget:visible').append(cov_html)
   setMergeButtonClass: (css_class) ->
     $('.accept_merge_request').removeClass("btn-create").addClass(css_class)

app/assets/stylesheets/pages/merge_requests.scss

-/**
- * MR -> show: Automerge widget
+
+  /**
+   * MR -> show: Automerge widget
  *
  */
 .mr-state-widget {
-  background: #FAFAFA;
-  margin-bottom: 20px;
-  color: #666;
-  border: 1px solid #e5e5e5;
-  @include box-shadow(0 1px 1px rgba(0, 0, 0, 0.05));
-  @include border-radius(3px);
-
   form {
     margin-bottom: 0;
     .clearfix {
@@ -26,67 +20,16 @@
       display: inline-block;
       margin: 0;
       margin-left: 20px;
-      padding: 5px;
+      padding: 10px 0;
       line-height: 20px;
+      font-weight: bold;
       .remove_source_checkbox {
         margin: 0;
+        font-weight: bold;
       }
     }
   }
-
-  .ci_widget {
-    border-bottom: 1px solid #EEE;
-
-    i {
-      margin-right: 4px;
-    }
-
-    &.ci-success {
-      color: $gl-success;
-    }
-
-    &.ci-skipped {
-      background-color: #eee;
-      color: #888;
-    }
-
-    &.ci-pending,
-    &.ci-running {
-      color: $gl-warning;
-    }
-
-    &.ci-failed,
-    &.ci-canceled,
-    &.ci-error {
-      color: $gl-danger;
-    }
-  }
-
-  .mr-widget-body,
-  .ci_widget,
-  .mr-widget-footer {
-    padding: 15px;
-  }
-
-  .mr-widget-body {
-    h4 {
-      font-weight: bold;
-      margin: 5px 0;
-    }
-
-    p:last-child {
-      margin-bottom: 0;
-    }
-  }
-
-  .mr-widget-footer {
-    border-top: 1px solid #EEE;
-  }
-
-  .ci-coverage {
-    float: right;
-  }
 }
 @media(min-width: $screen-sm-max) {
@@ -118,10 +61,23 @@
 }
 .label-branch {
-  color: #222;
+  @include border-radius(4px);
+  padding: 3px 4px;
+  border: none;
+  background: $hover;
+  color: #333;
   font-family: $monospace_font;
-  font-weight: bold;
+  font-weight: normal;
   overflow: hidden;
+
+  .label-project {
+    @include border-radius-left(4px);
+    padding: 3px 4px;
+    background: #279;
+    position: relative;
+    left: -4px;
+    letter-spacing: -1px;
+  }
 }
 .mr-list {
@@ -168,6 +124,64 @@
   display: none;
 }
+.mr-state-widget {
+  font-size: 13px;
+  background: #FAFAFA;
+  margin-bottom: 20px;
+  color: #666;
+  border: 1px solid #e5e5e5;
+  @include box-shadow(0 1px 1px rgba(0, 0, 0, 0.05));
+  @include border-radius(3px);
+
+  .ci_widget {
+    padding: 10px 15px;
+    font-size: 15px;
+    border-bottom: 1px solid #EEE;
+
+    &.ci-success {
+      color: $gl-success;
+    }
+
+    &.ci-skipped {
+      background-color: #eee;
+      color: #888;
+    }
+
+    &.ci-pending,
+    &.ci-running {
+      color: $gl-warning;
+    }
+
+    &.ci-failed,
+    &.ci-canceled,
+    &.ci-error {
+      color: $gl-danger;
+    }
+  }
+
+  .mr-widget-body {
+    padding: 10px 15px;
+
+    h4 {
+      font-weight: bold;
+      margin: 5px 0;
+    }
+
+    p:last-child {
+      margin-bottom: 0;
+    }
+  }
+
+  .mr-widget-footer {
+    padding: 10px 15px;
+    border-top: 1px solid #EEE;
+  }
+
+  .ci-coverage {
+    float: right;
+  }
+}
+
 .merge-request-show-labels {
   a {
     margin-right: 5px;
@@ -182,7 +196,3 @@
 .merge-request-form .select2-container {
   width: 250px !important;
 }
-
-#modal_merge_info .modal-dialog {
-  width: 600px;
-}

app/controllers/projects/blob_controller.rb

@@ -13,20 +13,27 @@ class Projects::BlobController < Projects::ApplicationController
   before_action :commit, except: [:new, :create]
   before_action :blob, except: [:new, :create]
   before_action :from_merge_request, only: [:edit, :update]
-  before_action :require_branch_head, only: [:edit, :update]
-  before_action :editor_variables, except: [:show, :preview, :diff]
   before_action :after_edit_path, only: [:edit, :update]
+  before_action :require_branch_head, only: [:edit, :update]
   def new
     commit unless @repository.empty?
   end
   def create
-    result = Files::CreateService.new(@project, current_user, @commit_params).execute
+    file_path = File.join(@path, File.basename(params[:file_name]))
+    result = Files::CreateService.new(
+      @project,
+      current_user,
+      params.merge(new_branch: sanitized_new_branch_name),
+      @ref,
+      file_path
+    ).execute
     if result[:status] == :success
       flash[:notice] = "Your changes have been successfully committed"
-      redirect_to namespace_project_blob_path(@project.namespace, @project, File.join(@target_branch, @file_path))
+      ref = sanitized_new_branch_name.presence || @ref
+      redirect_to namespace_project_blob_path(@project.namespace, @project, File.join(ref, file_path))
     else
       flash[:alert] = result[:message]
       render :new
@@ -41,10 +48,22 @@ class Projects::BlobController < Projects::ApplicationController
   end
   def update
-    result = Files::UpdateService.new(@project, current_user, @commit_params).execute
+    result = Files::UpdateService.
+      new(
+        @project,
+        current_user,
+        params.merge(new_branch: sanitized_new_branch_name),
+        @ref,
+        @path
+      ).execute
     if result[:status] == :success
       flash[:notice] = "Your changes have been successfully committed"
+
+      if from_merge_request
+        from_merge_request.reload_code
+      end
+
       redirect_to after_edit_path
     else
       flash[:alert] = result[:message]
@@ -61,11 +80,12 @@ class Projects::BlobController < Projects::ApplicationController
   end
   def destroy
-    result = Files::DeleteService.new(@project, current_user, @commit_params).execute
+    result = Files::DeleteService.new(@project, current_user, params, @ref, @path).execute
     if result[:status] == :success
       flash[:notice] = "Your changes have been successfully committed"
-      redirect_to namespace_project_tree_path(@project.namespace, @project, @target_branch)
+      redirect_to namespace_project_tree_path(@project.namespace, @project,
+                                              @ref)
     else
       flash[:alert] = result[:message]
       render :show
@@ -115,6 +135,7 @@ class Projects::BlobController < Projects::ApplicationController
     @id = params[:id]
     @ref, @path = extract_ref(@id)
+
   rescue InvalidPathError
     not_found!
   end
@@ -124,8 +145,8 @@ class Projects::BlobController < Projects::ApplicationController
       if from_merge_request
         diffs_namespace_project_merge_request_path(from_merge_request.target_project.namespace, from_merge_request.target_project, from_merge_request) +
           "#file-path-#{hexdigest(@path)}"
-      elsif @target_branch.present?
-        namespace_project_blob_path(@project.namespace, @project, File.join(@target_branch, @path))
+      elsif sanitized_new_branch_name.present?
+        namespace_project_blob_path(@project.namespace, @project, File.join(sanitized_new_branch_name, @path))
       else
         namespace_project_blob_path(@project.namespace, @project, @id)
       end
@@ -139,25 +160,4 @@ class Projects::BlobController < Projects::ApplicationController
   def sanitized_new_branch_name
     @new_branch ||= sanitize(strip_tags(params[:new_branch]))
   end
-
-  def editor_variables
-    @current_branch = @ref
-    @target_branch = (sanitized_new_branch_name || @ref)
-
-    @file_path =
-      if action_name.to_s == 'create'
-        File.join(@path, File.basename(params[:file_name]))
-      else
-        @path
-      end
-
-    @commit_params = {
-      file_path: @file_path,
-      current_branch: @current_branch,
-      target_branch: @target_branch,
-      commit_message: params[:commit_message],
-      file_content: params[:content],
-      file_content_encoding: params[:encoding]
-    }
-  end
 end

app/controllers/projects/compare_controller.rb

@@ -13,8 +13,13 @@ class Projects::CompareController < Projects::ApplicationController
     base_ref = Addressable::URI.unescape(params[:from])
     @ref = head_ref = Addressable::URI.unescape(params[:to])
-    compare_result = CompareService.new.
-      execute(@project, head_ref, @project, base_ref)
+    compare_result = CompareService.new.execute(
+      current_user,
+      @project,
+      head_ref,
+      @project,
+      base_ref
+    )
     @commits = compare_result.commits
     @diffs = compare_result.diffs

app/controllers/projects/merge_requests_controller.rb

+require 'gitlab/satellite/satellite'
+
 class Projects::MergeRequestsController < Projects::ApplicationController
   before_action :module_enabled
   before_action :merge_request, only: [
-    :edit, :update, :show, :diffs, :commits, :merge, :merge_check,
+    :edit, :update, :show, :diffs, :commits, :automerge, :automerge_check,
     :ci_status, :toggle_subscription
   ]
   before_action :closes_issues, only: [:edit, :update, :show, :diffs, :commits]
@@ -135,7 +137,7 @@ class Projects::MergeRequestsController < Projects::ApplicationController
     end
   end
-  def merge_check
+  def automerge_check
     if @merge_request.unchecked?
       @merge_request.check_if_can_be_merged
     end
@@ -145,11 +147,11 @@ class Projects::MergeRequestsController < Projects::ApplicationController
     render partial: "projects/merge_requests/widget/show.html.haml", layout: false
   end
-  def merge
+  def automerge
     return access_denied! unless @merge_request.can_be_merged_by?(current_user)
-    if @merge_request.mergeable?
-      MergeWorker.perform_async(@merge_request.id, current_user.id, params)
+    if @merge_request.automergeable?
+      AutoMergeWorker.perform_async(@merge_request.id, current_user.id, params)
       @status = true
     else
       @status = false

app/helpers/merge_requests_helper.rb

@@ -61,14 +61,4 @@ module MergeRequestsHelper
       }
     )
   end
-
-  def source_branch_with_namespace(merge_request)
-    if merge_request.for_fork?
-      namespace = link_to(merge_request.source_project_namespace,
-        project_path(merge_request.source_project))
-      namespace + ":#{merge_request.source_branch}"
-    else
-      merge_request.source_branch
-    end
-  end
 end

app/models/merge_request.rb

@@ -41,6 +41,8 @@ class MergeRequest < ActiveRecord::Base
   delegate :commits, :diffs, :last_commit, :last_commit_short_sha, to: :merge_request_diff, prefix: nil
+  attr_accessor :should_remove_source_branch
+
   # When this attribute is true some MR validation is ignored
   # It allows us to close or modify broken merge requests
   attr_accessor :allow_broken
@@ -55,7 +57,7 @@ class MergeRequest < ActiveRecord::Base
       transition [:reopened, :opened] => :closed
     end
-    event :mark_as_merged do
+    event :merge do
       transition [:reopened, :opened, :locked] => :merged
     end
@@ -203,10 +205,7 @@ class MergeRequest < ActiveRecord::Base
   end
   def check_if_can_be_merged
-    can_be_merged =
-      project.repository.can_be_merged?(source_sha, target_branch)
-
-    if can_be_merged
+    if Gitlab::Satellite::MergeAction.new(self.author, self).can_be_merged?
       mark_as_mergeable
     else
       mark_as_unmergeable
@@ -221,6 +220,18 @@ class MergeRequest < ActiveRecord::Base
     self.target_project.events.where(target_id: self.id, target_type: "MergeRequest", action: Event::CLOSED).last
   end
+  def automerge!(current_user, commit_message = nil)
+    return unless automergeable?
+
+    MergeRequests::AutoMergeService.
+      new(target_project, current_user).
+      execute(self, commit_message)
+  end
+
+  def remove_source_branch?
+    self.should_remove_source_branch && !self.source_project.root_ref?(self.source_branch) && !self.for_fork?
+  end
+
   def open?
     opened? || reopened?
   end
@@ -229,11 +240,11 @@ class MergeRequest < ActiveRecord::Base
     title =~ /\A\[?WIP\]?:? /i
   end
-  def mergeable?
+  def automergeable?
     open? && !work_in_progress? && can_be_merged?
   end
-  def gitlab_merge_status
+  def automerge_status
     if work_in_progress?
       "work_in_progress"
     else
@@ -260,14 +271,14 @@ class MergeRequest < ActiveRecord::Base
   #
   # see "git diff"
   def to_diff(current_user)
-    target_project.repository.diff_text(target_branch, source_sha)
+    Gitlab::Satellite::MergeAction.new(current_user, self).diff_in_satellite
   end
   # Returns the commit as a series of email patches.
   #
   # see "git format-patch"
   def to_patch(current_user)
-    target_project.repository.format_patch(target_branch, source_sha)
+    Gitlab::Satellite::MergeAction.new(current_user, self).format_patch
   end
   def hook_attrs
@@ -418,30 +429,4 @@ class MergeRequest < ActiveRecord::Base
       "Open"
     end
   end
-
-  def target_sha
-    @target_sha ||= target_project.
-      repository.commit(target_branch).sha
-  end
-
-  def source_sha
-    commits.first.sha
-  end
-
-  def fetch_ref
-    target_project.repository.fetch_ref(
-      source_project.repository.path_to_repo,
-      "refs/heads/#{source_branch}",
-      "refs/merge-requests/#{iid}/head"
-    )
-  end
-
-  def in_locked_state
-    begin
-      lock_mr
-      yield
-    ensure
-      unlock_mr if locked?
-    end
-  end
 end

app/models/merge_request_diff.rb

@@ -16,8 +16,9 @@ require Rails.root.join("app/models/commit")
 class MergeRequestDiff < ActiveRecord::Base
   include Sortable
-  # Prevent store of diff if commits amount more then 500
-  COMMITS_SAFE_SIZE = 500
+  # Prevent store of diff
+  # if commits amount more then 200
+  COMMITS_SAFE_SIZE = 200
   attr_reader :commits, :diffs
@@ -123,12 +124,12 @@ class MergeRequestDiff < ActiveRecord::Base
     if new_diffs.any?
       if new_diffs.size > Commit::DIFF_HARD_LIMIT_FILES
         self.state = :overflow_diff_files_limit
-        new_diffs = new_diffs.first[Commit::DIFF_HARD_LIMIT_LINES]
+        new_diffs = []
       end
       if new_diffs.sum { |diff| diff.diff.lines.count } > Commit::DIFF_HARD_LIMIT_LINES
         self.state = :overflow_diff_lines_limit
-        new_diffs = new_diffs.first[Commit::DIFF_HARD_LIMIT_LINES]
+        new_diffs = []
       end
     end
@@ -159,21 +160,12 @@ class MergeRequestDiff < ActiveRecord::Base
   private
   def compare_result
-    @compare_result ||=
-      begin
-        # Update ref for merge request
-        merge_request.fetch_ref
-
-        # Get latest sha of branch from source project
-        source_sha = merge_request.source_project.commit(source_branch).sha
-
-        Gitlab::CompareResult.new(
-          Gitlab::Git::Compare.new(
-            merge_request.target_project.repository.raw_repository,
-            merge_request.target_branch,
-            source_sha,
-          )
-        )
-      end
+    @compare_result ||= CompareService.new.execute(
+      merge_request.author,
+      merge_request.source_project,
+      merge_request.source_branch,
+      merge_request.target_project,
+      merge_request.target_branch,
+    )
   end
 end

app/models/namespace.rb

@@ -118,11 +118,12 @@ class Namespace < ActiveRecord::Base
     gitlab_shell.add_namespace(path_was)
     if gitlab_shell.mv_namespace(path_was, path)
-      # If repositories moved successfully we need to
-      # send update instructions to users.
+      # If repositories moved successfully we need to remove old satellites
+      # and send update instructions to users.
       # However we cannot allow rollback since we moved namespace dir
       # So we basically we mute exceptions in next actions
       begin
+        gitlab_shell.rm_satellites(path_was)
         send_update_instructions
       rescue
         # Returning false does not rollback after_* transaction but gives

app/models/project.rb

@@ -520,6 +520,14 @@ class Project < ActiveRecord::Base
     !repository.exists? || repository.empty?
   end
+  def ensure_satellite_exists
+    self.satellite.create unless self.satellite.exists?
+  end
+
+  def satellite
+    @satellite ||= Gitlab::Satellite::Satellite.new(self)
+  end
+
   def repo
     repository.raw
   end
@@ -589,11 +597,14 @@ class Project < ActiveRecord::Base
     new_path_with_namespace = File.join(namespace_dir, path)
     if gitlab_shell.mv_repository(old_path_with_namespace, new_path_with_namespace)
-      # If repository moved successfully we need to send update instructions to users.
+      # If repository moved successfully we need to remove old satellite
+      # and send update instructions to users.
       # However we cannot allow rollback since we moved repository
       # So we basically we mute exceptions in next actions
       begin
         gitlab_shell.mv_repository("#{old_path_with_namespace}.wiki", "#{new_path_with_namespace}.wiki")
+        gitlab_shell.rm_satellites(old_path_with_namespace)
+        ensure_satellite_exists
         send_move_instructions
         reset_events_cache
       rescue
@@ -691,6 +702,7 @@ class Project < ActiveRecord::Base
   def create_repository
     if forked?
       if gitlab_shell.fork_repository(forked_from_project.path_with_namespace, self.namespace.path)
+        ensure_satellite_exists
         true
       else
         errors.add(:base, 'Failed to fork repository via gitlab-shell')

app/models/project_services/gitlab_ci_service.rb

@@ -74,8 +74,6 @@ class GitlabCiService < CiService
     else
       :error
     end
-  rescue Errno::ECONNREFUSED
-    :error
   end
   def fork_registration(new_project, private_token)
@@ -105,8 +103,6 @@ class GitlabCiService < CiService
     if response.code == 200 and response["coverage"]
       response["coverage"]
     end
-  rescue Errno::ECONNREFUSED
-    nil
   end
   def build_page(sha, ref)

app/models/repository.rb

@@ -364,83 +364,6 @@ class Repository
     @root_ref ||= raw_repository.root_ref
   end
-  def commit_file(user, path, content, message, ref)
-    path[0] = '' if path[0] == '/'
-
-    committer = user_to_comitter(user)
-    options = {}
-    options[:committer] = committer
-    options[:author] = committer
-    options[:commit] = {
-      message: message,
-      branch: ref
-    }
-
-    options[:file] = {
-      content: content,
-      path: path
-    }
-
-    Gitlab::Git::Blob.commit(raw_repository, options)
-  end
-
-  def remove_file(user, path, message, ref)
-    path[0] = '' if path[0] == '/'
-
-    committer = user_to_comitter(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
-
-  def user_to_comitter(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(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?
-
-    actual_options = options.merge(
-      parents: [our_commit, their_commit],
-      tree: merge_index.write_tree(rugged),
-      update_ref: "refs/heads/#{target_branch}"
-    )
-
-    Rugged::Commit.create(rugged, actual_options)
-  end
-
   def search_files(query, ref)
     offset = 2
     args = %W(git grep -i -n --before-context #{offset} --after-context #{offset} #{query} #{ref || root_ref})
@@ -474,11 +397,6 @@ class Repository
     )
   end
-  def fetch_ref(source_path, source_ref, target_ref)
-    args = %W(git fetch #{source_path} #{source_ref}:#{target_ref})
-    Gitlab::Popen.popen(args, path_to_repo)
-  end
-
   private
   def cache

app/services/base_service.rb

@@ -31,10 +31,6 @@ class BaseService
     SystemHooksService.new
   end
-  def repository
-    project.repository
-  end
-
   # Add an error to the specified model for restricted visibility levels
   def deny_visibility_level(model, denied_visibility_level = nil)
     denied_visibility_level ||= model.visibility_level

app/services/compare_service.rb

-require 'securerandom'
-
 # Compare 2 branches for one repo or between repositories
 # and return Gitlab::CompareResult object that responds to commits and diffs
 class CompareService
-  def execute(source_project, source_branch, target_project, target_branch)
-    source_sha = source_project.commit(source_branch).sha
-
-    # If compare with other project we need to fetch ref first
-    unless target_project == source_project
-      random_string = SecureRandom.hex
-
-      target_project.repository.fetch_ref(
-        source_project.repository.path_to_repo,
-        "refs/heads/#{source_branch}",
-        "refs/tmp/#{random_string}/head"
+  def execute(current_user, source_project, source_branch, target_project, target_branch)
+    # Try to compare branches to get commits list and diffs
+    #
+    # Note: Use satellite only when need to compare between two repos
+    # because satellites are slower than operations on bare repo
+    if target_project == source_project
+      Gitlab::CompareResult.new(
+        Gitlab::Git::Compare.new(
+          target_project.repository.raw_repository,
+          target_branch,
+          source_branch,
+        )
       )
-    end
-
-    Gitlab::CompareResult.new(
-      Gitlab::Git::Compare.new(
-        target_project.repository.raw_repository,
+    else
+      Gitlab::Satellite::CompareAction.new(
+        current_user,
+        target_project,
         target_branch,
-        source_sha,
-      )
-    )
+        source_project,
+        source_branch
+      ).result
+    end
   end
 end

app/services/files/base_service.rb

 module Files
   class BaseService < ::BaseService
-    class ValidationError < StandardError; end
-    def execute
-      @current_branch = params[:current_branch]
-      @target_branch  = params[:target_branch]
-      @commit_message = params[:commit_message]
-      @file_path      = params[:file_path]
-      @file_content   = if params[:file_content_encoding] == 'base64'
-                          Base64.decode64(params[:file_content])
-                        else
-                          params[:file_content]
-                        end
-
-      # Validate parameters
-      validate
-
-      # Create new branch if it different from current_branch
-      if @target_branch != @current_branch
-        create_target_branch
-      end
-
-      if sha = commit
-        after_commit(sha, @target_branch)
-        success
-      else
-        error("Something went wrong. Your changes were not committed")
-      end
-    rescue ValidationError => ex
-      error(ex.message)
+    attr_reader :ref, :path
+    def initialize(project, user, params, ref, path = nil)
+      @project, @current_user, @params = project, user, params.dup
+      @ref = ref
+      @path = path
     end
     private
-    def after_commit(sha, branch)
-      PostCommitService.new(project, current_user).execute(sha, branch)
-    end
-
-    def current_branch
-      @current_branch ||= params[:current_branch]
-    end
-
-    def target_branch
-      @target_branch ||= params[:target_branch]
-    end
-
-    def raise_error(message)
-      raise ValidationError.new(message)
-    end
-
-    def validate
-      allowed = ::Gitlab::GitAccess.new(current_user, project).can_push_to_branch?(@target_branch)
-
-      unless allowed
-        raise_error("You are not allowed to push into this branch")
-      end
-
-      unless project.empty_repo?
-        unless repository.branch_names.include?(@current_branch)
-          raise_error("You can only create files if you are on top of a branch")
-        end
-
-        if @current_branch != @target_branch
-          if repository.branch_names.include?(@target_branch)
-            raise_error("Branch with such name already exists. You need to switch to this branch in order to make changes")
-          end
-        end
-      end
-    end
-
-    def create_target_branch
-      result = CreateBranchService.new(project, current_user).execute(@target_branch, @current_branch)
-
-      unless result[:status] == :success
-        raise_error("Something went wrong when we tried to create #{@target_branch} for you")
-      end
+    def repository
+      project.repository
     end
   end
 end

app/services/files/create_service.rb

 require_relative "base_service"
 module Files
-  class CreateService < Files::BaseService
-    def commit
-      repository.commit_file(current_user, @file_path, @file_content, @commit_message, @target_branch)
-    end
-    def validate
-      super
-      file_name = File.basename(@file_path)
+  class CreateService < BaseService
+    def execute
+      allowed = Gitlab::GitAccess.new(current_user, project).can_push_to_branch?(ref)
+      unless allowed
+        return error("You are not allowed to create file in this branch")
+      end
+      file_name = File.basename(path)
+      file_path = path
       unless file_name =~ Gitlab::Regex.file_name_regex
-        raise_error(
+        return error(
           'Your changes could not be committed, because the file name ' +
           Gitlab::Regex.file_name_regex_message
         )
       end
-      unless project.empty_repo?
-        blob = repository.blob_at_branch(@current_branch, @file_path)
+      if project.empty_repo?
+        # everything is ok because repo does not have a commits yet
+      else
+        unless repository.branch_names.include?(ref)
+          return error("You can only create files if you are on top of a branch")
+        end
+
+        blob = repository.blob_at_branch(ref, file_path)
         if blob
-          raise_error("Your changes could not be committed, because file with such name exists")
+          return error("Your changes could not be committed, because file with such name exists")
         end
       end
+
+
+      new_file_action = Gitlab::Satellite::NewFileAction.new(current_user, project, ref, file_path)
+      created_successfully = new_file_action.commit!(
+        params[:content],
+        params[:commit_message],
+        params[:encoding],
+        params[:new_branch]
+      )
+
+      if created_successfully
+        success
+      else
+        error("Your changes could not be committed, because the file has been changed")
+      end
     end
   end
 end

app/services/files/delete_service.rb

 require_relative "base_service"
 module Files
-  class DeleteService < Files::BaseService
-    def commit
-      repository.remove_file(current_user, @file_path, @commit_message, @target_branch)
+  class DeleteService < BaseService
+    def execute
+      allowed = ::Gitlab::GitAccess.new(current_user, project).can_push_to_branch?(ref)
+
+      unless allowed
+        return error("You are not allowed to push into this branch")
+      end
+
+      unless repository.branch_names.include?(ref)
+        return error("You can only create files if you are on top of a branch")
+      end
+
+      blob = repository.blob_at_branch(ref, path)
+
+      unless blob
+        return error("You can only edit text files")
+      end
+
+      delete_file_action = Gitlab::Satellite::DeleteFileAction.new(current_user, project, ref, path)
+
+      deleted_successfully = delete_file_action.commit!(
+        nil,
+        params[:commit_message]
+      )
+
+      if deleted_successfully
+        success
+      else
+        error("Your changes could not be committed, because the file has been changed")
+      end
     end
   end
 end

app/services/files/update_service.rb

 require_relative "base_service"
 module Files
-  class UpdateService < Files::BaseService
-    def commit
-      repository.commit_file(current_user, @file_path, @file_content, @commit_message, @target_branch)
+  class UpdateService < BaseService
+    def execute
+      allowed = ::Gitlab::GitAccess.new(current_user, project).can_push_to_branch?(ref)
+
+      unless allowed
+        return error("You are not allowed to push into this branch")
+      end
+
+      unless repository.branch_names.include?(ref)
+        return error("You can only create files if you are on top of a branch")
+      end
+
+      blob = repository.blob_at_branch(ref, path)
+
+      unless blob
+        return error("You can only edit text files")
+      end
+
+      edit_file_action = Gitlab::Satellite::EditFileAction.new(current_user, project, ref, path)
+      edit_file_action.commit!(
+        params[:content],
+        params[:commit_message],
+        params[:encoding],
+        params[:new_branch]
+      )
+
+      success
+    rescue Gitlab::Satellite::CheckoutFailed => ex
+      error("Your changes could not be committed because ref '#{ref}' could not be checked out", 400)
+    rescue Gitlab::Satellite::CommitFailed => ex
+      error("Your changes could not be committed. Maybe there was nothing to commit?", 409)
+    rescue Gitlab::Satellite::PushFailed => ex
+      error("Your changes could not be committed. Maybe the file was changed by another process?", 409)
     end
   end
 end