Module: Veewee::Provider::Core::Helper::Ssh

Included in:
Box
Defined in:
lib/veewee/provider/core/helper/ssh.rb

Instance Method Summary collapse

Instance Method Details

#ssh_execute(host, command, options = { :progress => "on"}) ⇒ Object 



82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
 
# File 'lib/veewee/provider/core/helper/ssh.rb', line 82

def ssh_execute(host,command, options = { :progress => "on"} )
  defaults= { :port => "22", :exitcode => "0", :user => "root"}
  options=defaults.merge(options)
  pid=""
  stdin=command
  stdout=""
  stderr=""
  status=-99999

  unless options[:mute]
    ui.info "Executing command: #{command}"
  end

  Net::SSH.start(host, options[:user], { :port => options[:port], :password => options[:password], :paranoid => false }) do |ssh|

    # open a new channel and configure a minimal set of callbacks, then run
    # the event loop until the channel finishes (closes)
    channel = ssh.open_channel do |ch|

      #request pty for sudo stuff and so
      ch.request_pty do |ch, success|
        raise "Error requesting pty" unless success
      end

      ch.exec "#{command}" do |ch, success|
        raise "could not execute command" unless success


        # "on_data" is called when the process writes something to stdout
        ch.on_data do |c, data|
          stdout+=data

          ui.info(data, :new_line => false) unless options[:mute]

        end

        # "on_extended_data" is called when the process writes something to stderr
        # NOTE: When requesting a pty (ch.request_pty), everything goes to stdout
        ch.on_extended_data do |c, type, data|
          stderr+=data

          ui.info(data, :new_line => false) unless options[:mute]

        end

        #exit code
        #http://groups.google.com/group/comp.lang.ruby/browse_thread/thread/a806b0f5dae4e1e2
        channel.on_request("exit-status") do |ch, data|
          exit_code = data.read_long
          status=exit_code
          if exit_code > 0
            ui.info "ERROR: exit code #{exit_code}" unless options[:mute]
          else
            #ui.info "Successfully executed"
          end
        end

        channel.on_request("exit-signal") do |ch, data|
          ui.info "SIGNAL: #{data.read_long}" unless options[:mute]
        end

        ch.on_close {
          #ui.info "done!"
        }
        #status=ch.exec "echo $?"
      end
    end
    channel.wait
  end


  if (status.to_s != options[:exitcode] )
    if (options[:exitcode]=="*")
      #its a test so we don't need to worry
    else
      raise Veewee::Provider::Core::Helper::SshResult.new(stdout,stderr,status), "Exitcode was not what we expected"
    end

  end

  return Veewee::Provider::Core::Helper::SshResult.new(stdout,stderr,status)

end

#ssh_transfer_file(host, filename, destination = '.', options = {}) ⇒ Object 



66
67
68
69
70
71
72
73
74
75
76
77
78
79
 
# File 'lib/veewee/provider/core/helper/ssh.rb', line 66

def ssh_transfer_file(host,filename,destination = '.' , options = {})

  defaults={ :paranoid => false }
  options=defaults.merge(options)

  Net::SSH.start( host,options[:user],options ) do |ssh|
    ui.info "Transferring #{filename} to #{destination} "
    ssh.scp.upload!( filename, destination ) do |ch, name, sent, total|
      #   print "\r#{destination}: #{(sent.to_f * 100 / total.to_f).to_i}%"
      env.ui.info ".",{:new_line => false , :prefix => false}
    end
  end
  ui.info "", {:prefix => false}
end

#when_ssh_login_works(ip = "127.0.0.1", options = { }, &block) ⇒ Object 



23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
 
# File 'lib/veewee/provider/core/helper/ssh.rb', line 23

def (ip="127.0.0.1", options = {  } , &block)

  defaults={ :port => '22', :timeout => 20000 }

  options=defaults.merge(options)

  timeout = options[:timeout]
  timeout=ENV['VEEWEE_TIMEOUT'].to_i unless ENV['VEEWEE_TIMEOUT'].nil?

  unless options[:mute]
  ui.info  "Waiting for ssh login on #{ip} with user #{options[:user]} to sshd on port => #{options[:port]} to work, timeout=#{timeout} sec"
  end

  run_hook(:before_ssh)

  begin
    Timeout::timeout(timeout) do
      connected=false
      while !connected do
        begin
          env.ui.info ".",{:new_line => false , :prefix => false} unless options[:mute]
          Net::SSH.start(ip, options[:user], { :port => options[:port] , :password => options[:password], :paranoid => false , :timeout => timeout }) do |ssh|

            ui.info "\n", {:prefix => false} unless options[:mute]
            block.call(ip);
            return true
          end
        rescue Net::SSH::Disconnect, Errno::ECONNREFUSED, Errno::EHOSTUNREACH, Errno::ECONNABORTED, Errno::ECONNRESET, Errno::ENETUNREACH, Errno::ETIMEDOUT
          sleep 5
        end
      end
    end
  rescue IOError
    ui.info "Received a disconnect; moving on"
    sleep 5
  rescue Timeout::Error
    raise Veewee::Error, "Ssh timeout #{timeout} sec has been reached."
  end
  ui.info ""
  return false
end