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# frozen_string_literal: true
# A state object to centralize logic related to merge request pipelines
class MergeRequest::Pipelines
include Gitlab::Utils::StrongMemoize
EVENT = 'merge_request_event'
def initialize(merge_request)
@merge_request = merge_request
end
attr_reader :merge_request
delegate :commit_shas, :source_project, :source_branch, to: :merge_request
def all
strong_memoize(:all_pipelines) do
next Ci::Pipeline.none unless source_project
pipelines =
if merge_request.persisted?
pipelines_using_cte
else
triggered_for_branch.for_sha(commit_shas)
end
sort(pipelines)
end
end
private
def pipelines_using_cte
cte = Gitlab::SQL::CTE.new(:shas, merge_request.all_commits.select(:sha))
source_pipelines_join = cte.table[:sha].eq(Ci::Pipeline.arel_table[:source_sha])
source_pipelines = filter_by(triggered_by_merge_request, cte, source_pipelines_join)
detached_pipelines = filter_by_sha(triggered_by_merge_request, cte)
pipelines_for_branch = filter_by_sha(triggered_for_branch, cte)
Ci::Pipeline.with(cte.to_arel)
.from_union([source_pipelines, detached_pipelines, pipelines_for_branch])
end
def filter_by_sha(pipelines, cte)
hex = Arel::Nodes::SqlLiteral.new("'hex'")
string_sha = Arel::Nodes::NamedFunction.new('encode', [cte.table[:sha], hex])
join_condition = string_sha.eq(Ci::Pipeline.arel_table[:sha])
filter_by(pipelines, cte, join_condition)
end
def filter_by(pipelines, cte, join_condition)
shas_table =
Ci::Pipeline.arel_table
.join(cte.table, Arel::Nodes::InnerJoin)
.on(join_condition)
.join_sources
pipelines.joins(shas_table)
end
def triggered_by_merge_request
source_project.ci_pipelines
.where(source: :merge_request_event, merge_request: merge_request)
end
def triggered_for_branch
source_project.ci_pipelines
.where(source: branch_pipeline_sources, ref: source_branch, tag: false)
end
def branch_pipeline_sources
strong_memoize(:branch_pipeline_sources) do
Ci::Pipeline.sources.reject { |source| source == EVENT }.values
end
end
def sort(pipelines)
sql = 'CASE ci_pipelines.source WHEN (?) THEN 0 ELSE 1 END, ci_pipelines.id DESC'
query = ApplicationRecord.send(:sanitize_sql_array, [sql, Ci::Pipeline.sources[:merge_request_event]]) # rubocop:disable GitlabSecurity/PublicSend
pipelines.order(Arel.sql(query))
end
end
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