class Centurion::DockerViaCli
Public Class Methods
new(hostname, port, docker_path, tls_args = {})
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# File lib/centurion/docker_via_cli.rb, line 10 def initialize(hostname, port, docker_path, tls_args = {}) @docker_host = "tcp://#{hostname}:#{port}" @docker_path = docker_path @tls_args = tls_args end
Private Class Methods
tls_keys()
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# File lib/centurion/docker_via_cli.rb, line 44 def self.tls_keys [:tlscacert, :tlscert, :tlskey] end
Public Instance Methods
attach(container_id)
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# File lib/centurion/docker_via_cli.rb, line 26 def attach(container_id) Centurion::Shell.echo(build_command(:attach, container_id)) end
exec(container_id, commandline)
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# File lib/centurion/docker_via_cli.rb, line 30 def exec(container_id, commandline) Centurion::Shell.echo(build_command(:exec, "#{container_id} #{commandline}")) end
exec_it(container_id, commandline)
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# File lib/centurion/docker_via_cli.rb, line 34 def exec_it(container_id, commandline) # the "or true" on the command is to prevent an exception from Shell.validate_status # because docker exec returns the same exit code as the latest command executed on # the shell, which causes an exception to be raised if the latest comand executed # was unsuccessful when you exit the shell. Centurion::Shell.echo(build_command(:exec, "-it #{container_id} #{commandline} || true")) end
pull(image, tag='latest')
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# File lib/centurion/docker_via_cli.rb, line 16 def pull(image, tag='latest') info 'Using CLI to pull' Centurion::Shell.echo(build_command(:pull, "#{image}:#{tag}")) end
tail(container_id)
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# File lib/centurion/docker_via_cli.rb, line 21 def tail(container_id) info "Tailing the logs on #{container_id}" Centurion::Shell.echo(build_command(:logs, container_id)) end
Private Instance Methods
all_tls_path_available?()
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# File lib/centurion/docker_via_cli.rb, line 48 def all_tls_path_available? self.class.tls_keys.all? { |key| @tls_args.key?(key) } end
build_command(action, destination)
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# File lib/centurion/docker_via_cli.rb, line 69 def build_command(action, destination) command = "#{@docker_path} -H=#{@docker_host}" command << tls_parameters command << case action when :pull then ' pull ' when :logs then ' logs -f ' when :attach then ' attach ' when :exec then ' exec ' end command << destination command end
tls_parameters()
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# File lib/centurion/docker_via_cli.rb, line 52 def tls_parameters return '' if @tls_args.nil? || @tls_args.empty? tls_flags = '' # --tlsverify can be set without passing the cacert, cert and key flags if @tls_args[:tls] == true || all_tls_path_available? tls_flags << ' --tlsverify' end self.class.tls_keys.each do |key| tls_flags << " --#{key}=#{@tls_args[key]}" if @tls_args[key] end tls_flags end