From 0415566b3796f500e7f694a0aee4882752d150c1 Mon Sep 17 00:00:00 2001
From: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Date: Wed, 10 Apr 2013 20:48:21 +0300
Subject: [PATCH] Remove wiki migrator. We dont need it any more. Users should
 migrate to 5.0 first

---
 lib/tasks/migrate/migrate_wiki.rake      |  42 -----
 lib/wiki_to_gollum_migrator.rb           | 124 -------------
 spec/lib/wiki_to_gollum_migrator_spec.rb | 219 -----------------------
 3 files changed, 385 deletions(-)
 delete mode 100644 lib/tasks/migrate/migrate_wiki.rake
 delete mode 100644 lib/wiki_to_gollum_migrator.rb
 delete mode 100644 spec/lib/wiki_to_gollum_migrator_spec.rb

diff --git a/lib/tasks/migrate/migrate_wiki.rake b/lib/tasks/migrate/migrate_wiki.rake
deleted file mode 100644
index 5d9881e45db..00000000000
--- a/lib/tasks/migrate/migrate_wiki.rake
+++ /dev/null
@@ -1,42 +0,0 @@
-namespace :gitlab do
-  namespace :wiki do
-
-    # This task will migrate all of the existing Wiki
-    # content stored in your database into the new
-    # Gollum Wiki system. A new repository named
-    # namespace/project.wiki.git will be created for
-    # each project that currently has Wiki pages in
-    # the database.
-    #
-    # Notes:
-    #  * The existing Wiki content will remain in your
-    #    database in-tact.
-    desc "GITLAB | Migrate Wiki content from database to Gollum repositories."
-    task :migrate => :environment do
-      wiki_migrator = WikiToGollumMigrator.new
-      wiki_migrator.migrate!
-    end
-
-    # This task will destroy all of the Wiki repos
-    # that the Wiki migration task created. Run this
-    # to clean up your environment if you experienced
-    # problems during the original migration. After
-    # executing this task, you can attempt the original
-    # migration again.
-    #
-    # Notes:
-    #  * This will not affect Wikis that have been created
-    #    as Gollum Wikis only. It will only remove the wikis
-    #    for the repositories that have old Wiki data in the
-    #    dataabase.
-    #  * If you have any repositories already named
-    #    namespace/project.wiki that you do not wish
-    #    to be removed you may want to perform a manual
-    #    cleanup instead.
-    desc "GITLAB | Remove the Wiki repositories created by the `gitlab:wiki:migrate` task."
-    task :rollback => :environment do
-      wiki_migrator = WikiToGollumMigrator.new
-      wiki_migrator.rollback!
-    end
-  end
-end
diff --git a/lib/wiki_to_gollum_migrator.rb b/lib/wiki_to_gollum_migrator.rb
deleted file mode 100644
index ed6a1700631..00000000000
--- a/lib/wiki_to_gollum_migrator.rb
+++ /dev/null
@@ -1,124 +0,0 @@
-class WikiToGollumMigrator
-
-  attr_reader :projects
-
-  def initialize
-    @projects = []
-
-    Project.find_in_batches(batch_size: 50) do |batch|
-      batch.each { |p| @projects << p if p.wikis.any? }
-    end
-  end
-
-  def migrate!
-    projects.each do |project|
-      log "\nMigrating Wiki for '#{project.path_with_namespace}'"
-      wiki = create_gollum_repo(project)
-      create_pages project, wiki
-      log "Project '#{project.path_with_namespace}' migrated. " + "[OK]".green
-    end
-  end
-
-  def rollback!
-    log "\nBeginning Wiki Migration Rollback..."
-    projects.each do |project|
-      destroy_gollum_repo project
-    end
-    log "\nWiki Rollback Complete."
-  end
-
-  private
-
-  def create_gollum_repo(project)
-    GollumWiki.new(project, nil).wiki
-  end
-
-  def destroy_gollum_repo(project)
-    log "  Removing Wiki repo for project: #{project.path_with_namespace}"
-    path = GollumWiki.new(project, nil).path_with_namespace
-    if Gitlab::Shell.new.remove_repository(path)
-      log "  Wiki destroyed successfully. " + "[OK}".green
-    else
-      log "  Problem destroying wiki. Please remove it manually. " + "[FAILED]".red
-    end
-  end
-
-  def create_pages(project, wiki)
-    pages = project.wikis.group(:slug).all
-
-    pages.each do |page|
-      create_page_and_revisions(project, page)
-    end
-  end
-
-  def create_page_and_revisions(project, page)
-    # Grab all revisions of the page
-    revisions = project.wikis.where(slug: page.slug).ordered.all
-
-    # Remove the first revision created from the array
-    # and use it to create the Gollum page. Each successive revision
-    # will then be applied to the new Gollum page as an update.
-    first_rev = revisions.pop
-
-    wiki = GollumWiki.new(project, page.user)
-    wiki_page = WikiPage.new(wiki)
-
-    attributes = extract_attributes_from_page(first_rev, project)
-
-    log "  Creating page '#{first_rev.title}'..."
-    if wiki_page.create(attributes)
-      log "  Created page '#{wiki_page.title}' " + "[OK]".green
-
-      # Reverse the revisions to create them in the correct
-      # chronological order.
-      create_revisions(project, wiki_page, revisions.reverse)
-    else
-      log "  Failed to create page '#{wiki_page.title}' " + "[FAILED]".red
-    end
-  end
-
-  def create_revisions(project, page, revisions)
-    log "    Creating revisions..."
-    revisions.each do |revision|
-      # Reinitialize a new GollumWiki instance for each page
-      # and revision created so the correct User is shown in
-      # the commit message.
-      wiki = GollumWiki.new(project, revision.user)
-      wiki_page = wiki.find_page(page.slug)
-
-      attributes = extract_attributes_from_page(revision, project)
-
-      content = attributes[:content]
-
-      if wiki_page.update(content)
-        log "    Created revision " + "[OK]".green
-      else
-        log "    Failed to create revision " + "[FAILED]".red
-      end
-    end
-  end
-
-  def extract_attributes_from_page(page, project)
-    attributes = page.attributes
-                     .with_indifferent_access
-                     .slice(:title, :content)
-
-    slug = page.slug
-
-    # Change 'index' pages to 'home' pages to match Gollum standards
-    if slug.downcase == "index"
-      attributes[:title] = "home" unless home_already_exists?(project)
-    end
-
-    attributes
-  end
-
-  def home_already_exists?(project)
-    project.wikis.where(slug: 'home').any? || project.wikis.where(slug: 'Home').any?
-  end
-
-  def log(message)
-    puts message
-  end
-
-end
diff --git a/spec/lib/wiki_to_gollum_migrator_spec.rb b/spec/lib/wiki_to_gollum_migrator_spec.rb
deleted file mode 100644
index f9b9c78ea01..00000000000
--- a/spec/lib/wiki_to_gollum_migrator_spec.rb
+++ /dev/null
@@ -1,219 +0,0 @@
-require "spec_helper"
-
-describe WikiToGollumMigrator do
-
-  def create_wiki_for(project)
-    3.times { @pages[project.id] << create_page(project) }
-  end
-
-  def create_revisions_for(project)
-    @pages[project.id].each do |page|
-      create_revision(page)
-    end
-  end
-
-  def create_page(project)
-    page = project.wikis.new(title: "Page #{rand(1000)}", content: "Content")
-    page.user = project.owner
-    page.slug = page.title.parameterize
-    page.save!
-    page
-  end
-
-  def create_revision(page)
-    revision = page.dup
-    revision.content = "Updated Content"
-    revision.save!
-  end
-
-  def create_temp_repo(path)
-    FileUtils.mkdir_p path
-    command = "git init --quiet --bare #{path};"
-    system(command)
-  end
-
-  before do
-    @repo_path = "#{Rails.root}/tmp/test-git-base-path"
-    @projects = []
-    @pages = Hash.new {|h,k| h[k] = Array.new }
-
-    @projects << create(:project)
-    @projects << create(:project)
-
-    @projects.each do |project|
-      create_wiki_for project
-      create_revisions_for project
-    end
-
-    @project_without_wiki = create(:project)
-  end
-
-  context "Before the migration" do
-    it "has two projects with valid wikis" do
-      @projects.each do |project|
-        pages = project.wikis.group(:slug).all
-        pages.count.should == 3
-      end
-    end
-
-    it "has two revision for each page" do
-      @projects.each do |project|
-        @pages[project.id].each do |page|
-          revisions = project.wikis.where(slug: page.slug)
-          revisions.count.should == 2
-        end
-      end
-    end
-  end
-
-  describe "#initialize" do
-    it "finds all projects that have existing wiki pages" do
-      Project.count.should == 3
-      subject.projects.count.should == 2
-    end
-  end
-
-  context "#migrate!" do
-    before do
-      Gitlab::Shell.any_instance.stub(:add_repository) do |path|
-        create_temp_repo("#{@repo_path}/#{path}.git")
-      end
-
-      subject.stub(:log).as_null_object
-
-      subject.migrate!
-    end
-
-    it "creates a new Gollum Wiki for each project" do
-      @projects.each do |project|
-        wiki_path = project.path_with_namespace + ".wiki.git"
-        full_path = @repo_path + "/" + wiki_path
-        File.exist?(full_path).should be_true
-        File.directory?(full_path).should be_true
-      end
-    end
-
-    it "creates a gollum page for each unique Wiki page" do
-      @projects.each do |project|
-        wiki = GollumWiki.new(project, nil)
-        wiki.pages.count.should == 3
-      end
-    end
-
-    it "creates a new revision for each old revision of the page" do
-      @projects.each do |project|
-        wiki = GollumWiki.new(project, nil)
-        wiki.pages.each do |page|
-          page.versions.count.should == 2
-        end
-      end
-    end
-
-    context "wikis with pages that have titles that do not match the slugs" do
-      before do
-        project = @projects.last
-        @page = project.wikis.new(title: "test page", content: "Invalid Page")
-        @page.slug = "totally-incorrect-slug"
-        @page.user = project.owner
-        @page.save!
-
-        create_revision(@page)
-
-        subject.rollback!
-        subject.migrate!
-      end
-
-      it "has a page with a title differing the slug" do
-        @page.slug.should_not == @page.title.parameterize
-      end
-
-      it "creates a new revision for each old revision of the page" do
-        @projects.each do |project|
-          wiki = GollumWiki.new(project, nil)
-          wiki.pages.each do |page|
-            page.versions.count.should == 2
-          end
-        end
-      end
-    end
-
-    context "changing wiki title from index to home" do
-      before do
-        @project = @projects.last
-        @page = @project.wikis.new(title: "Index", content: "Home Page")
-        @page.slug = "index"
-        @page.user = @project.owner
-        @page.save!
-
-        create_revision(@page)
-
-        subject.rollback!
-      end
-
-      it "creates a page called Home" do
-        subject.migrate!
-        wiki = GollumWiki.new(@project, nil)
-        page = wiki.find_page("home")
-        page.should be_present
-      end
-
-      context "when a page called Home already exists" do
-        before do
-        @index_page = @project.wikis.new(title: "Index", content: "Index Page")
-        @index_page.slug = "index"
-        @index_page.user = @project.owner
-        @index_page.save!
-
-        create_revision(@index_page)
-
-        @home_page = @project.wikis.new(title: "Home", content: "Home Page")
-        @home_page.slug = "home"
-        @home_page.user = @project.owner
-        @home_page.save!
-
-        create_revision(@home_page)
-        subject.migrate!
-        end
-
-        it "creates the index page" do
-          wiki = GollumWiki.new(@project, nil)
-          page = wiki.find_page("index")
-          page.should be_present
-        end
-
-        it "creates the home page" do
-          wiki = GollumWiki.new(@project, nil)
-          page = wiki.find_page("home")
-          page.should be_present
-        end
-      end
-    end
-  end
-
-  context "#rollback!" do
-    before do
-      Gitlab::Shell.any_instance.stub(:add_repository) do |path|
-        create_temp_repo("#{@repo_path}/#{path}.git")
-      end
-
-      Gitlab::Shell.any_instance.stub(:remove_repository) do |path|
-        FileUtils.rm_rf "#{@repo_path}/#{path}.git"
-      end
-
-      subject.stub(:log).as_null_object
-
-      subject.migrate!
-      subject.rollback!
-    end
-
-    it "destroys all of the wiki repositories that were created during migrate!" do
-      @projects.each do |project|
-        wiki_path = project.path_with_namespace + ".wiki.git"
-        full_path = @repo_path + "/" + wiki_path
-        File.exist?(full_path).should be_false
-      end
-    end
-  end
-
-
-end