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Remove wiki migrator. We dont need it any more. Users should migrate to 5.0 first

This commit is contained in:
Dmitriy Zaporozhets 2013-04-10 20:48:21 +03:00
parent 86e368a8af
commit 0415566b37
3 changed files with 0 additions and 385 deletions
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42
lib/tasks/migrate/migrate_wiki.rake
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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

124
lib/wiki_to_gollum_migrator.rb
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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

219
spec/lib/wiki_to_gollum_migrator_spec.rb
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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