class Fog::SSH::Real
Public Class Methods
new(address, username, options)
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# File lib/fog/core/ssh.rb, line 36 def initialize(address, username, options) assert_net_ssh_loaded @address = address @username = username @options = build_options(options) end
Public Instance Methods
run(commands) { |data, ""| ... }
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# File lib/fog/core/ssh.rb, line 43 def run(commands, &blk) commands = [*commands] results = [] begin Net::SSH.start(@address, @username, @options) do |ssh| commands.each do |command| result = Result.new(command) ssh.open_channel do |ssh_channel| ssh_channel.request_pty ssh_channel.exec(command) do |channel, success| unless success raise "Could not execute command: #{command.inspect}" end channel.on_data do |_ch, data| result.stdout << data yield [data, ""] if blk end channel.on_extended_data do |_ch, type, data| next unless type == 1 result.stderr << data yield ["", data] if blk end channel.on_request("exit-status") do |_ch, data| result.status = data.read_long end channel.on_request("exit-signal") do |_ch, _data| result.status = 255 end end end ssh.loop results << result end end rescue Net::SSH::HostKeyMismatch => exception exception.remember_host! sleep 0.2 retry end results end
Private Instance Methods
assert_net_ssh_loaded()
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# File lib/fog/core/ssh.rb, line 91 def assert_net_ssh_loaded begin require "net/ssh" rescue LoadError Fog::Logger.warning("'net/ssh' missing, please install and try again.") exit(1) end end
build_options(options)
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Modifies the given `options` hash AND returns a new hash. TODO: Probably shouldn't modify the given hash.
# File lib/fog/core/ssh.rb, line 102 def build_options(options) validate_options(options) merge_default_options_into(options) end
merge_default_options_into(options)
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# File lib/fog/core/ssh.rb, line 107 def merge_default_options_into(options) options[:timeout] ||= 30 if options[:key_data] || options[:keys] options[:keys_only] = true # Explicitly set these so net-ssh doesn"t add the default keys # as seen at https://github.com/net-ssh/net-ssh/blob/master/lib/net/ssh/authentication/session.rb#L131-146 options[:keys] = [] unless options[:keys] options[:key_data] = [] unless options[:key_data] end # net-ssh has deprecated :paranoid in favor of :verify_host_key # https://github.com/net-ssh/net-ssh/pull/524 opts = { :paranoid => false, :verify_host_key => :never }.merge(options) if Net::SSH::VALID_OPTIONS.include? :verify_host_key opts.delete(:paranoid) end opts[:verify_host_key] = false unless Net::SSH::Verifiers.const_defined?(:Never) opts end
validate_options(options)
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# File lib/fog/core/ssh.rb, line 127 def validate_options(options) key_manager = Net::SSH::Authentication::KeyManager.new(nil, options) unless options[:key_data] || options[:keys] || options[:password] || key_manager.agent raise ArgumentError, ":key_data, :keys, :password or a loaded ssh-agent is required to initialize SSH" end end