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Contents
require 'open3'
require 'hydra/messaging_io'
module Hydra #:nodoc:
# Read and write with an ssh connection. For example:
# @ssh = Hydra::SSH.new(
# 'localhost', # connect to this machine
# '/home/user', # move to the home directory
# "ruby hydra/test/echo_the_dolphin.rb" # run the echo script
# )
# @message = Hydra::Messages::TestMessage.new("Hey there!")
# @ssh.write @message
# puts @ssh.gets.text
# => "Hey there!"
#
# Note that what ever process you run should respond with Hydra messages.
class SSH
include Open3
include Hydra::MessagingIO
# Initialize new SSH connection.
# The first parameter is passed directly to ssh for starting a connection.
# The second parameter is the directory to CD into once connected.
# The third parameter is the command to run
# So you can do:
# Hydra::SSH.new('-p 3022 user@server.com', '/home/user/Desktop', 'ls -l')
# To connect to server.com as user on port 3022, then CD to their desktop, then
# list all the files.
def initialize(connection_options, directory, command)
@writer, @reader, @error = popen3("ssh -tt #{connection_options}")
@writer.write("mkdir -p #{directory}\n")
@writer.write("cd #{directory}\n")
@writer.write(command+"\n")
end
# Close the SSH connection
def close
@writer.write "exit\n"
super
end
end
end
Version data entries
33 entries across 33 versions & 8 rubygems