Class: Backup::Remote::Command

Inherits:
Object
  • Object
show all
Includes:
SSHKit::DSL
Defined in:
lib/backup/remote/command.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.build_sshkit_host(hostname, ssh_options) ⇒ Object 



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# File 'lib/backup/remote/command.rb', line 14

def self.build_sshkit_host(hostname, ssh_options)
  ssh_user = ssh_options[:user]
  ssh_pass = ssh_options[:password]
  ssh_key = ssh_options[:key]

  host = SSHKit::Host.new({hostname: hostname, user: ssh_user})
  host.port = ssh_options[:port] || 22
  host.key = ssh_key if ssh_key
  host.password = ssh_pass if ssh_pass

  host
end

.interaction_handler_pwd(user, pwd, host = '') ⇒ Object 



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# File 'lib/backup/remote/command.rb', line 83

def self.interaction_handler_pwd(user, pwd, host='')
  {
      "#{user}@#{host}'s password:" => "#{pwd}\n",
      /#{user}@#{host}'s password: */ => "#{pwd}\n",
      "password: " => "#{pwd}\n",
      "password:" => "#{pwd}\n",
      "Password: " => "#{pwd}\n",
  }
end

Instance Method Details

#run_ssh_cmd(hostname, ssh_options, cmd) ⇒ Object 



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# File 'lib/backup/remote/command.rb', line 27

def run_ssh_cmd(hostname, ssh_options, cmd)
  #puts "run ssh cmd: #{hostname}, #{ssh_user}, #{ssh_pass}, #{cmd}"
  host = Command.build_sshkit_host(hostname, ssh_options)

  #srv = ssh_user+'@'+hostname
  all_servers = [host]

  output = ''

  SSHKit::Coordinator.new(host).each in: :sequence do
    output = capture cmd
  end


=begin
  on all_servers do |srv|
    as(user: ssh_user) do
      #execute(cmd)
      output = capture(cmd)
    end
  end
=end

  puts "output: #{output}"

  #
  return {     res: 1,      output: output   }

rescue => e
  puts "ssh error: #{e.message}, #{e.backtrace}"

  {
      res: 0,
      output: output,
      error: e.message
  }
end

#run_ssh_cmd_sudo(hostname, ssh_user, ssh_pass, cmd, handler = nil) ⇒ Object 



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# File 'lib/backup/remote/command.rb', line 65

def run_ssh_cmd_sudo(hostname, ssh_user, ssh_pass, cmd, handler=nil)
  host = SSHKit::Host.new("#{ssh_user}@#{hostname}")
  host.password = ssh_pass

  on host do |host|
    execute("#{cmd}", interaction_handler: handler)
  end

  #
  return {res: 1, output: ""}

rescue => e
  {
      res: 0,
      error: e.message
  }
end

#ssh_download_file(hostname, ssh_options, remote_filename, dest_filename) ⇒ Object 



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# File 'lib/backup/remote/command.rb', line 95

def ssh_download_file(hostname, ssh_options, remote_filename, dest_filename)
  return ssh_download_file_sshkit(hostname, ssh_options, remote_filename, dest_filename)
  #return ssh_download_file_scp(hostname, ssh_user, ssh_pass, remote_filename, dest_filename)
end

#ssh_download_file_scp(hostname, ssh_options, remote_filename, dest_filename) ⇒ Object 



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# File 'lib/backup/remote/command.rb', line 100

def ssh_download_file_scp(hostname, ssh_options, remote_filename, dest_filename)
  ssh_user = ssh_options[:ssh_user]
  ssh_pass = ssh_options[:ssh_password]
  ssh_key = ssh_options[:ssh_key]

  # work
  Net::SCP.download!(hostname, ssh_user, remote_filename, dest_filename, :ssh => { :password => ssh_pass })

  #
  return {res: 1, output: ""}

rescue => e
  {
      res: 0,
      error: e.message
  }
end

#ssh_download_file_sshkit(hostname, ssh_options, remote_filename, dest_filename) ⇒ Object

!! NOT work on big files > 4Gb



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# File 'lib/backup/remote/command.rb', line 119

def ssh_download_file_sshkit(hostname, ssh_options, remote_filename, dest_filename)
  host = Command.build_sshkit_host(hostname, ssh_options)

  on host do |host|
    download! remote_filename, dest_filename
  end

  #
  return {res: 1, output: ""}

rescue => e
  {
      res: 0,
      error: e.message
  }
end

#ssh_upload_file(hostname, ssh_options, source_file, dest_file, handler = nil) ⇒ Object 



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# File 'lib/backup/remote/command.rb', line 136

def ssh_upload_file(hostname, ssh_options, source_file, dest_file, handler=nil)
  host = Command.build_sshkit_host(hostname, ssh_options)

  # scp
  f_temp = "/tmp/#{SecureRandom.uuid}"

  # sshkit
  SSHKit::Coordinator.new(host).each in: :sequence do
    # upload to temp file
    upload! source_file, f_temp

    # upload to dest
    execute("cp #{f_temp} #{dest_file}", interaction_handler: handler)

  end

=begin
  on host do |host|
    # NOT WORK with sudo
    #upload! source_file, dest_file


    as(user: ssh_user) do
      # upload to temp file
      upload! source_file, f_temp

      # upload to dest
      execute("cp #{f_temp} #{dest_file}", interaction_handler: handler)

    end
  end
=end

  #
  return     {res: 1, output: ""}
rescue => e
  {
      res: 0,
      error: e.message
  }
end