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Versions: 36
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Contents
module Ufo::Docker
class Cleaner
include Ufo::Utils::Execute
include Ufo::Utils::Logging
def initialize(docker_image_name, options)
# docker_image_name does not containg the tag
# Example: 123456789.dkr.ecr.us-east-1.amazonaws.com/image
@docker_image_name = docker_image_name
@options = options
@keep = Ufo.config.docker.clean_keep
@tag_prefix = options[:tag_prefix] || "ufo"
end
def cleanup
return if @keep.nil?
return if delete_list.empty?
command = "docker rmi #{delete_list}"
logger.info "Cleaning docker images"
return if @options[:noop]
execute(command, quiet: true)
end
def delete_list
return if @keep.nil?
return [] if ENV['TEST'] || @options[:noop]
return @delete_list if @delete_list
out = execute("docker images") # live to override the noop cli options
name_regexp = Regexp.new(@docker_image_name)
# Example tag: ufo-2016-10-19T00-36-47-211b63a
tag_string = "#{@tag_prefix}-\\d{4}-\\d{2}-\\d{2}T\\d{2}-\\d{2}-\\d{2}-.{7}"
tag_regexp = Regexp.new(tag_string)
filtered_out = out.split("\n").select do |line|
name,tag = line.split(' ')
name =~ name_regexp && tag =~ tag_regexp
end
tags = filtered_out.map { |l| l.split(' ')[1] } # 2nd column is tag
tags = tags.sort.reverse # ordered by most recent images first
delete_tags = tags[@keep..-1]
if delete_tags.nil?
@delete_list = []
else
@delete_list = delete_tags.map { |t| "#{@docker_image_name}:#{t}" }.join(' ')
end
end
end
end
Version data entries
36 entries across 36 versions & 1 rubygems