debian-mirror-gitlab/app/services/merge_requests/build_service.rb

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# frozen_string_literal: true
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module MergeRequests
class BuildService < MergeRequests::BaseService
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include Gitlab::Utils::StrongMemoize
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def execute
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@params_issue_iid = params.delete(:issue_iid)
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self.merge_request = MergeRequest.new
# TODO: this should handle all quick actions that don't have side effects
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# https://gitlab.com/gitlab-org/gitlab-foss/issues/53658
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merge_quick_actions_into_params!(merge_request, only: [:target_branch])
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# Assign the projects first so we can use policies for `filter_params`
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merge_request.author = current_user
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merge_request.source_project = find_source_project
merge_request.target_project = find_target_project
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process_params
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merge_request.compare_commits = []
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set_merge_request_target_branch
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merge_request.can_be_created = projects_and_branches_valid?
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# compare branches only if branches are valid, otherwise
# compare_branches may raise an error
if merge_request.can_be_created
compare_branches
assign_title_and_description
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assign_labels
assign_milestone
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end
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merge_request
end
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private
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attr_accessor :merge_request
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delegate :target_branch,
:target_branch_ref,
:target_project,
:source_branch,
:source_branch_ref,
:source_project,
:compare_commits,
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:draft_title,
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:description,
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:first_multiline_commit,
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:errors,
to: :merge_request
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def force_remove_source_branch
if params.key?(:force_remove_source_branch)
params.delete(:force_remove_source_branch)
else
merge_request.source_project.remove_source_branch_after_merge?
end
end
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def filter_id_params
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# merge_request.assign_attributes(...) below is a Rails
# method that only work if all the params it is passed have
# corresponding fields in the database. As there are no fields
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# in the database for :add_label_ids, :remove_label_ids,
# :add_assignee_ids and :remove_assignee_ids, we
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# need to remove them from the params before the call to
# merge_request.assign_attributes(...)
#
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# IssuableBaseService#process_label_ids and
# IssuableBaseService#process_assignee_ids take care
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# of the removal.
params[:label_ids] = process_label_ids(params, extra_label_ids: merge_request.label_ids.to_a)
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params[:assignee_ids] = process_assignee_ids(params, extra_assignee_ids: merge_request.assignee_ids.to_a)
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merge_request.assign_attributes(params.to_h.compact)
end
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def process_params
# Force remove the source branch?
merge_request.merge_params['force_remove_source_branch'] = force_remove_source_branch
# Only assign merge requests params that are allowed
self.params = assign_allowed_merge_params(merge_request, params)
# Filter out params that are either not allowed or invalid
filter_params(merge_request)
# Filter out the following from params:
# - :add_label_ids and :remove_label_ids
# - :add_assignee_ids and :remove_assignee_ids
filter_id_params
end
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def find_source_project
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source_project = project_from_params(:source_project)
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return source_project if source_project.present? && can?(current_user, :create_merge_request_from, source_project)
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project
end
def find_target_project
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target_project = project_from_params(:target_project)
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return target_project if target_project.present? && can?(current_user, :create_merge_request_in, target_project)
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target_project = project.default_merge_request_target
return target_project if target_project.present? && can?(current_user, :create_merge_request_in, target_project)
project
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end
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def project_from_params(param_name)
project_from_params = params.delete(param_name)
id_param_name = :"#{param_name}_id"
if project_from_params.nil? && params[id_param_name]
project_from_params = Project.find_by_id(params.delete(id_param_name))
end
project_from_params
end
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def set_merge_request_target_branch
if source_branch_default? && !target_branch_specified?
merge_request.target_branch = nil
else
merge_request.target_branch ||= target_project.default_branch
end
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end
def source_branch_specified?
params[:source_branch].present?
end
def target_branch_specified?
params[:target_branch].present?
end
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def projects_and_branches_valid?
return false if source_project.nil? || target_project.nil?
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return false unless source_branch_specified? || target_branch_specified?
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validate_projects_and_branches
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errors.blank?
end
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def compare_branches
compare = CompareService.new(
source_project,
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source_branch_ref
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).execute(
target_project,
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target_branch_ref
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)
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if compare
merge_request.compare_commits = compare.commits
merge_request.compare = compare
end
end
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def validate_projects_and_branches
merge_request.validate_target_project
merge_request.validate_fork
return if errors.any?
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add_error('You must select source and target branch') unless branches_present?
add_error('You must select different branches') if same_source_and_target?
add_error("Source branch \"#{source_branch}\" does not exist") unless source_branch_exists?
add_error("Target branch \"#{target_branch}\" does not exist") unless target_branch_exists?
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end
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def add_error(message)
errors.add(:base, message)
end
def branches_present?
target_branch.present? && source_branch.present?
end
def same_source_and_target?
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same_source_and_target_project? && target_branch == source_branch
end
def source_branch_default?
same_source_and_target_project? && source_branch == target_project.default_branch
end
def same_source_and_target_project?
source_project == target_project
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end
def source_branch_exists?
source_branch.blank? || source_project.commit(source_branch)
end
def target_branch_exists?
target_branch.blank? || target_project.commit(target_branch)
end
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def set_draft_title_if_needed
return unless compare_commits.empty? || Gitlab::Utils.to_boolean(params[:draft])
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merge_request.title = draft_title
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end
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# When your branch name starts with an iid followed by a dash this pattern will be
# interpreted as the user wants to close that issue on this project.
#
# For example:
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# - Issue 112 exists
# - title: Emoji don't show up in commit title
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# - Source branch is: 112-fix-mep-mep
#
# Will lead to:
# - Appending `Closes #112` to the description
# - Setting the title as 'Resolves "Emoji don't show up in commit title"' if there is
# more than one commit in the MR
#
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def assign_title_and_description
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assign_description_from_repository_template
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assign_title_and_description_from_commits
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merge_request.title ||= title_from_issue if target_project.issues_enabled? || target_project.external_issue_tracker
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merge_request.title ||= source_branch.titleize.humanize
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set_draft_title_if_needed
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append_closes_description
end
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def assign_labels
return unless target_project.issues_enabled? && issue
return if merge_request.label_ids&.any?
merge_request.label_ids = issue.try(:label_ids)
end
def assign_milestone
return unless target_project.issues_enabled? && issue
return if merge_request.milestone_id.present?
merge_request.milestone_id = issue.try(:milestone_id)
end
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def append_closes_description
return unless issue&.to_reference.present?
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closes_issue = "#{target_project.autoclose_referenced_issues ? 'Closes' : 'Related to'} #{issue.to_reference}"
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if description.present?
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descr_parts = [merge_request.description, closes_issue]
merge_request.description = descr_parts.join("\n\n")
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else
merge_request.description = closes_issue
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end
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end
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def assign_title_and_description_from_commits
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commits = compare_commits
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if commits&.count == 1
commit = commits.first
else
commit = first_multiline_commit
return unless commit
end
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merge_request.title ||= commit.title
merge_request.description ||= commit.description.try(:strip)
end
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def title_from_issue
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return unless issue
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return "Resolve \"#{issue.title}\"" if issue.is_a?(Issue)
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return if issue_iid.blank?
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title_parts = ["Resolve #{issue.to_reference}"]
branch_title = source_branch.downcase.remove(issue_iid.downcase).titleize.humanize
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title_parts << "\"#{branch_title}\"" if branch_title.present?
title_parts.join(' ')
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end
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def assign_description_from_repository_template
return unless merge_request.description.blank?
# Use TemplateFinder to load the default template. We need this mainly for
# the project_id, in case it differs from the target project. Conveniently,
# since the underlying merge_request_template_names_hash is cached, this
# should also be relatively cheap and allows us to bail early if the project
# does not have a default template.
templates = TemplateFinder.all_template_names(target_project, :merge_requests)
template = templates.values.flatten.find { |tmpl| tmpl[:name].casecmp?('default') }
return unless template
begin
repository_template = TemplateFinder.build(
:merge_requests,
target_project,
{
name: template[:name],
source_template_project_id: template[:project_id]
}
).execute
rescue ::Gitlab::Template::Finders::RepoTemplateFinder::FileNotFoundError
return
end
return unless repository_template.present?
merge_request.description = repository_template.content
end
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def issue_iid
strong_memoize(:issue_iid) do
@params_issue_iid || begin
id = if target_project.external_issue_tracker
source_branch.match(target_project.external_issue_reference_pattern).try(:[], 0)
end
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id || source_branch.match(/\A(\d+)-/).try(:[], 1)
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end
end
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end
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def issue
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strong_memoize(:issue) do
target_project.get_issue(issue_iid, current_user)
end
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end
end
end
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MergeRequests::BuildService.prepend_mod_with('MergeRequests::BuildService')