40 lines
1.2 KiB
Ruby
40 lines
1.2 KiB
Ruby
# frozen_string_literal: true
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module Ci
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class ResourceGroup < ApplicationRecord
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extend Gitlab::Ci::Model
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belongs_to :project, inverse_of: :resource_groups
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has_many :resources, class_name: 'Ci::Resource', inverse_of: :resource_group
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has_many :builds, class_name: 'Ci::Build', inverse_of: :resource_group
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validates :key,
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length: { maximum: 255 },
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format: { with: Gitlab::Regex.environment_name_regex,
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message: Gitlab::Regex.environment_name_regex_message }
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before_create :ensure_resource
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##
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# NOTE: This is concurrency-safe method that the subquery in the `UPDATE`
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# works as explicit locking.
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def assign_resource_to(build)
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resources.free.limit(1).update_all(build_id: build.id) > 0
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end
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def release_resource_from(build)
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resources.retained_by(build).update_all(build_id: nil) > 0
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end
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private
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def ensure_resource
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# Currently we only support one resource per group, which means
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# maximum one build can be set to the resource group, thus builds
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# belong to the same resource group are executed once at time.
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self.resources.build if self.resources.empty?
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end
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end
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end
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