Class: Mccloud::Util::Ssh

Inherits:
Object
  • Object
show all
Defined in:
lib/mccloud/util/ssh.rb

Class Method Summary collapse

Class Method Details

.execute_when_tcp_available(ip = "localhost", options = { }, &block) ⇒ Object

we need to try the actual login because vbox gives us a connect after the machine boots



58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
 
# File 'lib/mccloud/util/ssh.rb', line 58

def self.execute_when_tcp_available(ip="localhost", options = { } , &block)

  defaults={ :port => 22, :timeout => 20000 , :pollrate => 5}

  options=defaults.merge(options)

  begin
    Timeout::timeout(options[:timeout]) do
      connected=false
      while !connected do
        begin
          #puts "trying connection"
          s = TCPSocket.new(ip, options[:port])
          s.close
          block.call(ip);
          return true
        rescue Errno::ECONNREFUSED, Errno::EHOSTUNREACH,Errno::ETIMEDOUT
          sleep options[:pollrate]
        end
      end
    end
  rescue Timeout::Error
    raise 'timeout connecting to port'
  end

  return false
end

.ssh(host, user, options = { :progress => "on" }, command = nil, exitcode = 0) ⇒ Object 



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
165
166
167
 
# File 'lib/mccloud/util/ssh.rb', line 86

def self.ssh(host ,user , options = { :progress => "on" } ,command=nil ,exitcode=0)

  defaults= { :port => "22",  :user => "root", :paranoid => false }
  options=defaults.merge(options)
  @pid=""
  @stdin=command
  @stdout=""
  @stderr=""
  @status=-99999

  puts "Executing command: #{command}"

  Net::SSH.start(host, user, options) 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

          puts data

        end

        # "on_extended_data" is called when the process writes something to stderr
        ch.on_extended_data do |c, type, data|
          @stderr+=data

          puts data

        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
            puts "ERROR: exit code #{exit_code}"
          else
            #puts "Successfully executed"
          end
        end

        channel.on_request("exit-signal") do |ch, data|
          puts "SIGNAL: #{data.read_long}"
        end

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


  if (@status.to_s != exitcode.to_s )
    if (exitcode=="*")
      #its a test so we don't need to worry
    else
      puts "Exitcode = #{exitcode} - #{@status.to_s}"
      raise "Exitcode was not what we expected"
    end

  end

end

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



38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
 
# File 'lib/mccloud/util/ssh.rb', line 38

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

  unless File.exists?(filename)
    raise Mccloud::Error,"Can't transfer #{filename}: does not exist"
  end

  Net::SSH.start( host,options[:user],options ) do |ssh|
    puts "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}%"
      print "."

    end
  end
  puts
end

.when_ssh_login_works(ip = "localhost", options = { }, &block) ⇒ Object 



5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
 
# File 'lib/mccloud/util/ssh.rb', line 5

def self.(ip="localhost", options = {  } , &block)

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

  options=defaults.merge(options)

  puts
  puts "Waiting for ssh login on #{ip} with user #{options[:user]} to sshd on port => #{options[:port]} to work (Timeout in #{options[:timeout]} seconds)"

  begin
    Timeout::timeout(options[:timeout]) do
      connected=false
      while !connected do
        begin
          print "."
          Net::SSH.start(ip, options[:user], { :port => options[:port] , :password => options[:password], :paranoid => false, :timeout => options[:timeout] ,:keys => options[:keys] }) do |ssh|
            block.call(ip);
            puts ""
            return true
          end
        rescue Net::SSH::AuthenticationFailed,Net::SSH::Disconnect,Errno::ECONNREFUSED, Errno::EHOSTUNREACH, Errno::ECONNABORTED, Errno::ECONNRESET, Errno::ENETUNREACH
          sleep 5
        end
      end
    end
  rescue Timeout::Error
    raise 'ssh timeout'
  end
  puts ""
  return false
end