debian-mirror-gitlab/lib/api/v3/github.rb

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# frozen_string_literal: true
# These endpoints partially mimic Github API behavior in order to successfully
# integrate with Jira Development Panel.
# Endpoints returning an empty list were temporarily added to avoid 404's
# during Jira's DVCS integration.
#
module API
module V3
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class Github < ::API::Base
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NO_SLASH_URL_PART_REGEX = %r{[^/]+}.freeze
ENDPOINT_REQUIREMENTS = {
namespace: NO_SLASH_URL_PART_REGEX,
project: NO_SLASH_URL_PART_REGEX,
username: NO_SLASH_URL_PART_REGEX
}.freeze
# Used to differentiate Jira Cloud requests from Jira Server requests
# Jira Cloud user agent format: Jira DVCS Connector Vertigo/version
# Jira Server user agent format: Jira DVCS Connector/version
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JIRA_DVCS_CLOUD_USER_AGENT = 'Jira DVCS Connector Vertigo'
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GITALY_TIMEOUT_CACHE_KEY = 'api:v3:Gitaly-timeout-cache-key'
GITALY_TIMEOUT_CACHE_EXPIRY = 1.day
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include PaginationParams
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feature_category :integrations
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before do
authorize_jira_user_agent!(request)
authenticate!
end
helpers do
params :project_full_path do
requires :namespace, type: String
requires :project, type: String
end
def authorize_jira_user_agent!(request)
not_found! unless Gitlab::Jira::Middleware.jira_dvcs_connector?(request.env)
end
def update_project_feature_usage_for(project)
# Prevent errors on GitLab Geo not allowing
# UPDATE statements to happen in GET requests.
return if Gitlab::Database.read_only?
project.log_jira_dvcs_integration_usage(cloud: jira_cloud?)
end
def jira_cloud?
request.env['HTTP_USER_AGENT'].include?(JIRA_DVCS_CLOUD_USER_AGENT)
end
def find_project_with_access(params)
project = find_project!(
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::Gitlab::Jira::Dvcs.restore_full_path(**params.slice(:namespace, :project).symbolize_keys)
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)
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not_found! unless can?(current_user, :read_code, project)
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project
end
# rubocop: disable CodeReuse/ActiveRecord
def find_merge_requests
merge_requests = authorized_merge_requests.reorder(updated_at: :desc)
paginate(merge_requests)
end
# rubocop: enable CodeReuse/ActiveRecord
# rubocop: disable CodeReuse/ActiveRecord
def find_merge_request_with_access(id, access_level = :read_merge_request)
merge_request = authorized_merge_requests.find_by(id: id)
not_found! unless can?(current_user, access_level, merge_request)
merge_request
end
# rubocop: enable CodeReuse/ActiveRecord
def authorized_merge_requests
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MergeRequestsFinder.new(current_user, authorized_only: !current_user.can_read_all_resources?)
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.execute.with_jira_integration_associations
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end
def authorized_merge_requests_for_project(project)
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MergeRequestsFinder
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.new(current_user, authorized_only: !current_user.can_read_all_resources?, project_id: project.id)
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.execute.with_jira_integration_associations
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end
# rubocop: disable CodeReuse/ActiveRecord
def find_notes(noteable)
# They're not presented on Jira Dev Panel ATM. A comments count with a
# redirect link is presented.
notes = paginate(noteable.notes.user.reorder(nil))
notes.select { |n| n.readable_by?(current_user) }
end
# rubocop: enable CodeReuse/ActiveRecord
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# Returns an empty Array instead of the Commit diff files for a period
# of time after a Gitaly timeout, to mitigate frequent Gitaly timeouts
# for some Commit diffs.
def diff_files(commit)
cache_key = [
GITALY_TIMEOUT_CACHE_KEY,
commit.project.id,
commit.cache_key
].join(':')
return [] if Rails.cache.read(cache_key).present?
begin
commit.diffs.diff_files
rescue GRPC::DeadlineExceeded => error
# Gitaly fails to load diffs consistently for some commits. The other information
# is still valuable for Jira. So we skip the loading and respond with a 200 excluding diffs
# Remove this when https://gitlab.com/gitlab-org/gitaly/-/issues/3741 is fixed.
Rails.cache.write(cache_key, 1, expires_in: GITALY_TIMEOUT_CACHE_EXPIRY)
Gitlab::ErrorTracking.track_exception(error)
[]
end
end
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end
resource :orgs do
get ':namespace/repos' do
present []
end
end
resource :user do
get :repos do
present []
end
end
resource :users do
params do
use :pagination
end
get ':namespace/repos' do
namespace = Namespace.find_by_full_path(params[:namespace])
not_found!('Namespace') unless namespace
projects = current_user.can_read_all_resources? ? Project.all : current_user.authorized_projects
projects = projects.in_namespace(namespace.self_and_descendants)
projects_cte = Project.wrap_with_cte(projects)
.eager_load_namespace_and_owner
.with_route
present paginate(projects_cte),
with: ::API::Github::Entities::Repository,
root_namespace: namespace.root_ancestor
end
get ':username' do
forbidden! unless can?(current_user, :read_users_list)
user = UsersFinder.new(current_user, { username: params[:username] }).execute.first
not_found! unless user
present user, with: ::API::Github::Entities::User
end
end
# Jira dev panel integration weirdly requests for "/-/jira/pulls" instead
# "/api/v3/repos/<namespace>/<project>/pulls". This forces us into
# returning _all_ Merge Requests from authorized projects (user is a member),
# instead just the authorized MRs from a project.
# Jira handles the filtering, presenting just MRs mentioning the Jira
# issue ID on the MR title / description.
resource :repos do
# Keeping for backwards compatibility with old Jira integration instructions
# so that users that do not change it will not suddenly have a broken integration
get '/-/jira/pulls' do
present find_merge_requests, with: ::API::Github::Entities::PullRequest
end
get '/-/jira/events' do
present []
end
params do
use :project_full_path
end
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# TODO Remove the custom Apdex SLO target `urgency: :low` when this endpoint has been optimised.
# https://gitlab.com/gitlab-org/gitlab/-/issues/337269
get ':namespace/:project/pulls', urgency: :low do
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user_project = find_project_with_access(params)
merge_requests = authorized_merge_requests_for_project(user_project)
present paginate(merge_requests), with: ::API::Github::Entities::PullRequest
end
params do
use :project_full_path
end
get ':namespace/:project/pulls/:id' do
merge_request = find_merge_request_with_access(params[:id])
present merge_request, with: ::API::Github::Entities::PullRequest
end
# In Github, each Merge Request is automatically also an issue.
# Therefore we return its comments here.
# It'll present _just_ the comments counting with a link to GitLab on
# Jira dev panel, not the actual note content.
get ':namespace/:project/issues/:id/comments' do
merge_request = find_merge_request_with_access(params[:id])
present find_notes(merge_request), with: ::API::Github::Entities::NoteableComment
end
# This refer to "review" comments but Jira dev panel doesn't seem to
# present it accordingly.
get ':namespace/:project/pulls/:id/comments' do
present []
end
# Commits are not presented within "Pull Requests" modal on Jira dev
# panel.
get ':namespace/:project/pulls/:id/commits' do
present []
end
# Self-hosted Jira (tested on 7.11.1) requests this endpoint right
# after fetching branches.
get ':namespace/:project/events' do
user_project = find_project_with_access(params)
merge_requests = authorized_merge_requests_for_project(user_project)
present paginate(merge_requests), with: ::API::Github::Entities::PullRequestEvent
end
params do
use :project_full_path
use :pagination
end
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# TODO Remove the custom Apdex SLO target `urgency: :low` when this endpoint has been optimised.
# https://gitlab.com/gitlab-org/gitlab/-/issues/337268
get ':namespace/:project/branches', urgency: :low do
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user_project = find_project_with_access(params)
update_project_feature_usage_for(user_project)
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next [] unless user_project.repo_exists?
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branches = ::Kaminari.paginate_array(user_project.repository.branches.sort_by(&:name))
present paginate(branches), with: ::API::Github::Entities::Branch, project: user_project
end
params do
use :project_full_path
end
get ':namespace/:project/commits/:sha' do
user_project = find_project_with_access(params)
commit = user_project.commit(params[:sha])
not_found! 'Commit' unless commit
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present commit, with: ::API::Github::Entities::RepoCommit, diff_files: diff_files(commit)
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end
end
end
end
end