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Contents
module Ufo
class Docker::Cleaner
include Util
include Defaults
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 = options[:keep] || settings.data["clean_keep"] || 3
@tag_prefix = options[:tag_prefix] || "ufo"
end
def cleanup
return if delete_list.empty?
command = "docker rmi #{delete_list}"
say "Cleaning up docker images...".green
say "Running: #{"docker rmi #{delete_list}"}"
return if @options[:noop]
execute(command, use_system: false) # to use_system: false silence output
end
def delete_list
return @delete_list if @delete_list
out = execute("docker images", live: true) # 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
def say(msg)
msg = "NOOP #{msg}" if @options[:noop]
puts msg unless @options[:mute]
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems