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# This class is not backed by a table in the main database.
# It loads the latest Pipeline for the HEAD of a repository, and caches that
# in Redis.
module Ci
class PipelineStatus
attr_accessor :sha, :status, :project, :loaded
delegate :commit, to: :project
def self.load_for_project(project)
new(project).tap do |status|
status.load_status
end
end
def initialize(project, sha: nil, status: nil)
@project = project
@sha = sha
@status = status
end
def has_status?
loaded? && sha.present? && status.present?
end
def load_status
return if loaded?
if has_cache?
load_from_cache
else
load_from_commit
store_in_cache
end
self.loaded = true
end
def load_from_commit
return unless commit
self.sha = commit.sha
self.status = commit.status
end
# We only cache the status for the HEAD commit of a project
# This status is rendered in project lists
def store_in_cache_if_needed
return unless sha
return delete_from_cache unless commit
store_in_cache if commit.sha == self.sha
end
def load_from_cache
Gitlab::Redis.with do |redis|
self.sha, self.status = redis.hmget(cache_key, :sha, :status)
end
end
def store_in_cache
Gitlab::Redis.with do |redis|
redis.mapped_hmset(cache_key, { sha: sha, status: status })
end
end
def delete_from_cache
Gitlab::Redis.with do |redis|
redis.del(cache_key)
end
end
def has_cache?
Gitlab::Redis.with do |redis|
redis.exists(cache_key)
end
end
def loaded?
self.loaded
end
def cache_key
"projects/#{project.id}/build_status"
end
end
end
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