Class: Backup::RemoveOrphans

Inherits:
Object
  • Object
show all
Defined in:
lib/backup/remove_orphans.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(config, dry_run_reporter = nil) ⇒ RemoveOrphans

Returns a new instance of RemoveOrphans.



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# File 'lib/backup/remove_orphans.rb', line 7

def initialize(config, dry_run_reporter=nil)
  @config = config
  @dry_run_reporter = dry_run_reporter
end

Instance Attribute Details

#config ⇒ Object (readonly)

Returns the value of attribute config.



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# File 'lib/backup/remove_orphans.rb', line 5

def config
  @config
end

Instance Method Details

#add_builds_dependencies_to_dry_run_report(ids_for_delete) ⇒ Object 



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# File 'lib/backup/remove_orphans.rb', line 108

def add_builds_dependencies_to_dry_run_report(ids_for_delete)
  repos_for_delete = Repository.where(current_build_id: ids_for_delete)
  jobs_for_delete = Job.where(source_id: ids_for_delete)
  @dry_run_reporter.add_to_report(:repositories, *repos_for_delete.map(&:id))
  @dry_run_reporter.add_to_report(:jobs, *jobs_for_delete.map(&:id))
end

#cases ⇒ Object 



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# File 'lib/backup/remove_orphans.rb', line 30

def cases
  [
    {
      main_model: Repository,
      relations: [
        {related_model: Build, fk_name: 'current_build_id'},
        {related_model: Build, fk_name: 'last_build_id'}
      ]
    }, {
      main_model: Build,
      relations: [
        {related_model: Repository, fk_name: 'repository_id'},
        {related_model: Commit, fk_name: 'commit_id'},
        {related_model: Request, fk_name: 'request_id'},
        {related_model: PullRequest, fk_name: 'pull_request_id'},
        {related_model: Branch, fk_name: 'branch_id'},
        {related_model: Tag, fk_name: 'tag_id'}
      ],
      method: :destroy_all,
      dry_run_complement: -> (ids) { add_builds_dependencies_to_dry_run_report(ids) }
    }, {
      main_model: Job,
      relations: [
        {related_model: Repository, fk_name: 'repository_id'},
        {related_model: Commit, fk_name: 'commit_id'},
        {related_model: Stage, fk_name: 'stage_id'},
      ]
    }, {
      main_model: Branch,
      relations: [
        {related_model: Repository, fk_name: 'repository_id'},
        {related_model: Build, fk_name: 'last_build_id'}
      ]
    }, {
      main_model: Tag,
      relations: [
        {related_model: Repository, fk_name: 'repository_id'},
        {related_model: Build, fk_name: 'last_build_id'}
      ]
    }, {
      main_model: Commit,
      relations: [
        {related_model: Repository, fk_name: 'repository_id'},
        {related_model: Branch, fk_name: 'branch_id'},
        {related_model: Tag, fk_name: 'tag_id'}
      ]
    }, {
      main_model: Cron,
      relations: [
        {related_model: Branch, fk_name: 'branch_id'}
      ]
    }, {
      main_model: PullRequest,
      relations: [
        {related_model: Repository, fk_name: 'repository_id'}
      ]
    }, {
      main_model: SslKey,
      relations: [
        {related_model: Repository, fk_name: 'repository_id'}
      ]
    }, {
      main_model: Request,
      relations: [
        {related_model: Commit, fk_name: 'commit_id'},
        {related_model: PullRequest, fk_name: 'pull_request_id'},
        {related_model: Branch, fk_name: 'branch_id'},
        {related_model: Tag, fk_name: 'tag_id'}
      ]
    }, {
      main_model: Stage,
      relations: [
        {related_model: Build, fk_name: 'build_id'}
      ]
    }
  ]
end

#dry_run_report ⇒ Object 



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# File 'lib/backup/remove_orphans.rb', line 12

def dry_run_report
  @dry_run_reporter.report
end

#process_table(args) ⇒ Object 



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# File 'lib/backup/remove_orphans.rb', line 115

def process_table(args)
  main_model = args[:main_model]
  related_model = args[:related_model]
  fk_name = args[:fk_name]
  method = args[:method] || :delete_all
  dry_run_complement = args[:dry_run_complement]
  
  main_table = main_model.table_name
  related_table = related_model.table_name
  
  for_delete = main_model.find_by_sql(%{
    select a.*
    from #{main_table} a
    left join #{related_table} b
    on a.#{fk_name} = b.id
    where
      a.#{fk_name} is not null
      and b.id is null;
  })
  
  ids_for_delete = for_delete.map(&:id)
  
  if config.dry_run
    key = main_table.to_sym
    @dry_run_reporter.add_to_report(key, *ids_for_delete)
    dry_run_complement.call(ids_for_delete) if dry_run_complement
  else
    main_model.where(id: ids_for_delete).send(method)
  end
end

#run ⇒ Object 



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# File 'lib/backup/remove_orphans.rb', line 16

def run
  cases.each do |model_block|
    model_block[:relations].each do |relation|
      process_table(
        main_model: model_block[:main_model],
        related_model: relation[:related_model],
        fk_name: relation[:fk_name],
        method: model_block[:method],
        dry_run_complement: model_block[:dry_run_complement]
      )
    end
  end
end