f0aa54e0fb
This commit adds a new Rake task for migrating all of your existing Wiki content from your database into new Gollum repositories. The bulk of the logic happens within the `WikiToGollumMigrator` class which is decently test covered and located in the lib directory. The new Rake task can be executed by running: `bundle exec rake gitlab:wiki:migrate` It will output a nice log of every project that it migrates along with success or failure messages. I have used it on my own installation to migrate my Wikis successfully.
103 lines
2.8 KiB
Ruby
103 lines
2.8 KiB
Ruby
class WikiToGollumMigrator
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attr_reader :projects
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def initialize
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@projects = []
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Project.find_in_batches(batch_size: 50) do |batch|
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batch.each { |p| @projects << p if p.wikis.any? }
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end
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end
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def migrate!
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projects.each do |project|
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log "\nMigrating Wiki for '#{project.path_with_namespace}'"
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wiki = create_gollum_repo(project)
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create_pages project, wiki
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log "Project '#{project.path_with_namespace}' migrated. " + "[OK]".green
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end
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end
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private
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def create_gollum_repo(project)
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GollumWiki.new(project, nil).wiki
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end
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def create_pages(project, wiki)
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pages = project.wikis.group(:slug).all
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pages.each do |page|
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create_page_and_revisions(project, page)
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end
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end
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def create_page_and_revisions(project, page)
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# Grab all revisions of the page
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revisions = project.wikis.where(slug: page.slug).ordered.all
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# Remove the first revision created from the array
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# and use it to create the Gollum page. Each successive revision
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# will then be applied to the new Gollum page as an update.
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first_rev = revisions.pop
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wiki = GollumWiki.new(project, page.user)
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wiki_page = WikiPage.new(wiki)
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attributes = extract_attributes_from_page(first_rev)
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if wiki_page.create(attributes)
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log " Created page '#{wiki_page.title}' " + "[OK]".green
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# Reverse the revisions to create them in the correct
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# chronological order.
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create_revisions(project, wiki_page, revisions.reverse)
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else
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log " Failed to create page '#{wiki_page.title}' " + "[FAILED]".red
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end
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end
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def create_revisions(project, page, revisions)
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revisions.each do |revision|
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log " Creating revisions..."
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# Reinitialize a new GollumWiki instance for each page
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# and revision created so the correct User is shown in
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# the commit message.
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wiki = GollumWiki.new(project, revision.user)
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wiki_page = wiki.find_page(page.slug)
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attributes = extract_attributes_from_page(revision)
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content = attributes[:content]
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if wiki_page.update(content)
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log " Created revision " + "[OK]".green
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else
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log " Failed to create revision " + "[FAILED]".red
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end
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end
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end
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def extract_attributes_from_page(page)
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attributes = page.attributes
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.with_indifferent_access
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.slice(:title, :content)
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# Change 'index' pages to 'home' pages to match Gollum standards
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if attributes[:title].downcase == "index"
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attributes[:title] = "home" unless home_already_exists?(project)
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end
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attributes
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end
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def home_already_exists?(project)
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project.wikis.where(title: 'home').any? || project.wikis.where(title: 'Home').any?
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end
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def log(message)
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puts message
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end
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end
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