Class: Hobo::Lib::Vm::Command

Inherits:
Object
  • Object
show all
Defined in:
lib/hobo/lib/vm/command.rb

Constant Summary collapse

@@vm_inspector = 
Inspector.new

Class Attribute Summary collapse

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(command, opts = {}) ⇒ Command

Returns a new instance of Command.



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# File 'lib/hobo/lib/vm/command.rb', line 12

def initialize command, opts = {}
  @command = command
  @opts = {
      :auto_echo => false,
      :psuedo_tty => false,
      :pwd => opts[:pwd] || @@vm_inspector.project_mount_path,
      :append => ''
  }.merge(opts)
end

Class Attribute Details

.vm_inspector ⇒ Object

Returns the value of attribute vm_inspector.



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# File 'lib/hobo/lib/vm/command.rb', line 6

def vm_inspector
  @vm_inspector
end

Instance Attribute Details

#command ⇒ Object

Returns the value of attribute command.



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# File 'lib/hobo/lib/vm/command.rb', line 10

def command
  @command
end

#opts ⇒ Object

Returns the value of attribute opts.



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# File 'lib/hobo/lib/vm/command.rb', line 10

def opts
  @opts
end

Instance Method Details

#<(pipe) ⇒ Object 



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# File 'lib/hobo/lib/vm/command.rb', line 29

def < pipe
  pipe = "echo '#{pipe.shellescape}'" if opts[:auto_echo]
  @pipe_in_vm = pipe
  @opts[:psuedo_tty] = false
  return self
end

#<<(pipe) ⇒ Object 



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# File 'lib/hobo/lib/vm/command.rb', line 22

def << pipe
  pipe = "echo #{pipe.shellescape}" if opts[:auto_echo]
  @pipe = pipe
  @opts[:psuedo_tty] = false
  return self
end

#run ⇒ Object

TODO Refactor in to ssh helper with similar opts to shell helper TODO Migrate all vm_shell functionality this direction



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# File 'lib/hobo/lib/vm/command.rb', line 38

def run
  return if @command.nil?
  require 'net/ssh/simple'
  opts = @@vm_inspector.ssh_config.merge(@opts)

  Net::SSH::Simple.sync do
    ssh_opts = {
        :user => opts[:ssh_user],
        :port => opts[:ssh_port],
        :forward_agent => true,
        :global_known_hosts_file => "/dev/null",
        :paranoid => false,
        :user_known_hosts_file => "/dev/null"
    }

    ssh_opts[:keys] = [opts[:ssh_identity]] if opts[:ssh_identity]

    tmp = Tempfile.new "vm_command_exec"

    begin
      filename = File.basename(tmp.path)
      remote_file = "/tmp/#{filename}"
      tmp.write "#{@command}#{opts[:append]}"
      tmp.close

      scp_put opts[:ssh_host], tmp.path, remote_file, ssh_opts
      result = ssh opts[:ssh_host], "cd #{opts[:pwd]}; exec /bin/bash #{remote_file}", ssh_opts
      ssh opts[:ssh_host], "rm #{remote_file}", ssh_opts

      # Throw exception if exit code not 0

      return opts[:capture] ? result.stdout : result.success
    ensure
      tmp.unlink
    end
  end
end

#to_s ⇒ Object

TODO Speed up Vagrant SSH connections May need to be disabled for windows (mm_send_fd: UsePrivilegeSeparation=yes not supported) gist.github.com/jedi4ever/5657094



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# File 'lib/hobo/lib/vm/command.rb', line 80

def to_s
  opts = @@vm_inspector.ssh_config.merge(@opts)

  psuedo_tty = opts[:psuedo_tty] ? "-t" : ""

  ssh_command = [
      "ssh",
      "-o 'UserKnownHostsFile /dev/null'",
      "-o 'StrictHostKeyChecking no'",
      "-o 'ForwardAgent yes'",
      "-o 'LogLevel FATAL'",
      "-p #{opts[:ssh_port]}",
      "-i #{opts[:ssh_identity].shellescape}",
      psuedo_tty,
      "#{opts[:ssh_user].shellescape}@#{opts[:ssh_host].shellescape}"
  ].join(" ")

  pwd_set_command = " -- \"cd #{@opts[:pwd].shellescape}; exec /bin/bash"

  vm_command = [
      @pipe_in_vm,
      @command
  ].compact.join(" | ")

  command = [
      ssh_command + pwd_set_command,
      vm_command.empty? ? nil : vm_command.shellescape
  ].compact.join(" -c ") + "#{opts[:append].shellescape}\""

  [
      @pipe,
      command
  ].compact.join(" | ")
end

#to_str ⇒ Object 



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# File 'lib/hobo/lib/vm/command.rb', line 115

def to_str
  to_s
end