gitlab-org--gitlab-foss/app/models/project_authorization.rb
Yorick Peterse f73193c328
Smarter refreshing of authorized projects
Prior to this commit the refreshing of authorized projects was done in
two steps:

1. Remove existing authorizations
2. Insert a new list of all authorizations

This can lead to a high amount of dead tuples as every time all rows are
being replaced. For example, if a user with 100 authorizations is given
access to a new project this would lead to:

* 100 rows being removed
* 101 new rows being inserted

This commit changes the way this system works so it only removes/inserts
what is necessary. Using the above example this would lead to only 1 new
row being inserted, with the initial 100 being left untouched.

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/25257
2016-12-19 17:11:03 +01:00

21 lines
725 B
Ruby

class ProjectAuthorization < ActiveRecord::Base
belongs_to :user
belongs_to :project
validates :project, presence: true
validates :access_level, inclusion: { in: Gitlab::Access.all_values }, presence: true
validates :user, uniqueness: { scope: [:project, :access_level] }, presence: true
def self.insert_authorizations(rows, per_batch = 1000)
rows.each_slice(per_batch) do |slice|
tuples = slice.map do |tuple|
tuple.map { |value| connection.quote(value) }
end
connection.execute <<-EOF.strip_heredoc
INSERT INTO project_authorizations (user_id, project_id, access_level)
VALUES #{tuples.map { |tuple| "(#{tuple.join(', ')})" }.join(', ')}
EOF
end
end
end