Class: Beaker::Host

Inherits:
Object
  • Object
show all
Defined in:
lib/beaker/host.rb

Direct Known Subclasses

Mac::Host, Unix::Host, Windows::Host

Defined Under Namespace

Classes: CommandFailure, PuppetConfigReader

Constant Summary collapse

SELECT_TIMEOUT = 
30

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, options) ⇒ Host

Returns a new instance of Host.



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# File 'lib/beaker/host.rb', line 43

def initialize name, options
  @logger = options[:logger]
  @name, @options = name.to_s, options.dup

  # This is annoying and its because of drift/lack of enforcement/lack of having
  # a explict relationship between our defaults, our setup steps and how they're
  # related through 'type' and the differences between the assumption of our two
  # configurations we have for many of our products
  type = is_pe? ? :pe : :foss
  @defaults = merge_defaults_for_type @options, type
  pkg_initialize
end

Instance Attribute Details

#defaults ⇒ Object (readonly)

Returns the value of attribute defaults.



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# File 'lib/beaker/host.rb', line 42

def defaults
  @defaults
end

#logger ⇒ Object

Returns the value of attribute logger.



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# File 'lib/beaker/host.rb', line 41

def logger
  @logger
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/beaker/host.rb', line 42

def name
  @name
end

Class Method Details

.create(name, options) ⇒ Object 



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# File 'lib/beaker/host.rb', line 28

def self.create name, options
  case options['HOSTS'][name]['platform']
  when /windows/
    Windows::Host.new name, options
  when /aix/
    Aix::Host.new name, options
  when /osx/
    Mac::Host.new name, options
  else
    Unix::Host.new name, options
  end
end

Instance Method Details

#+(other) ⇒ Object 



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# File 'lib/beaker/host.rb', line 134

def + other
  @name + other
end

#[](k) ⇒ Object 



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# File 'lib/beaker/host.rb', line 110

def [] k
  @defaults[k]
end

#[]=(k, v) ⇒ Object 



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# File 'lib/beaker/host.rb', line 106

def []= k, v
  @defaults[k] = v
end

#add_env_var(key, val) ⇒ Object

Add the provided key/val to the current ssh environment

Examples:

host.add_env_var('PATH', '/usr/bin:PATH')

Parameters:

  • key (String) —

    The key to add the value to

  • val (String) —

    The value for the key



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# File 'lib/beaker/host.rb', line 214

def add_env_var key, val
  key = key.to_s.upcase
  escaped_val = Regexp.escape(val).gsub('/', '\/').gsub(';', '\;')
  env_file = self[:ssh_env_file]
  #see if the key/value pair already exists
  if exec(Beaker::Command.new("grep -e #{key}=.*#{escaped_val} #{env_file}"), :acceptable_exit_codes => (0..255) ).exit_code == 0
    return #nothing to do here, key value pair already exists
  #see if the key already exists
  elsif exec(Beaker::Command.new("grep #{key} #{env_file}"), :acceptable_exit_codes => (0..255) ).exit_code == 0
    exec(Beaker::SedCommand.new(self['HOSTS'][name]['platform'], "s/#{key}=/#{key}=#{escaped_val}:/", env_file))
  else
    exec(Beaker::Command.new("echo \"#{key}=#{val}\" >> #{env_file}"))
  end
end

#close ⇒ Object 



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# File 'lib/beaker/host.rb', line 248

def close
  @connection.close if @connection
  @connection = nil
end

#connection ⇒ Object 



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# File 'lib/beaker/host.rb', line 242

def connection
  @connection ||= SshConnection.connect( reachable_name,
                                         self['user'],
                                         self['ssh'], { :logger => @logger } )
end

#delete_env_var(key, val) ⇒ Object

Delete the provided key/val from the current ssh environment

Examples:

host.delete_env_var('PATH', '/usr/bin:PATH')

Parameters:

  • key (String) —

    The key to delete the value from

  • val (String) —

    The value to delete for the key



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# File 'lib/beaker/host.rb', line 234

def delete_env_var key, val
  val = Regexp.escape(val).gsub('/', '\/').gsub(';', '\;')
  #if the key only has that single value remove the entire line
  exec(Beaker::SedCommand.new(self['HOSTS'][name]['platform'], "/#{key}=#{val}$/d", self[:ssh_env_file]))
  #if the key has multiple values and we only need to remove the provided val
  exec(Beaker::SedCommand.new(self['HOSTS'][name]['platform'], "s/#{key}=\\(.*[:;]*\\)#{val}[:;]*/#{key}=\\1/", self[:ssh_env_file]))
end

#determine_if_x86_64 ⇒ Boolean

Examine the host system to determine the architecture

Returns:

  • (Boolean) —

    true if x86_64, false otherwise



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# File 'lib/beaker/host.rb', line 199

def determine_if_x86_64
  result = exec(Beaker::Command.new("arch | grep x86_64"), :acceptable_exit_codes => (0...127))
  result.exit_code == 0
end

#do_scp_from(source, target, options) ⇒ Object 



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# File 'lib/beaker/host.rb', line 373

def do_scp_from source, target, options

  @logger.debug "localhost $ scp #{@name}:#{source} #{target}"
  result = connection.scp_from(source, target, options, $dry_run)
  @logger.debug result.stdout
  return result
end

#do_scp_to(source, target, options) ⇒ Object

scp files from the localhost to this test host, if a directory is provided it is recursively copied

Parameters:

  • source (String) —

    The path to the file/dir to upload

  • target (String) —

    The destination path on the host

  • options (Hash{Symbol=>String}) —

    Options to alter execution

Options Hash (options):

  • :ignore (Array<String>) —

    An array of file/dir paths that will not be copied to the host



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# File 'lib/beaker/host.rb', line 306

def do_scp_to source, target, options
  @logger.notify "localhost $ scp #{source} #{@name}:#{target} {:ignore => #{options[:ignore]}}"

  result = Result.new(@name, [source, target])
  has_ignore = options[:ignore] and not options[:ignore].empty?
  # construct the regex for matching ignored files/dirs
  ignore_re = nil
  if has_ignore
    ignore_arr = Array(options[:ignore]).map do |entry|
      "((\/|\\A)#{entry}(\/|\\z))".sub(/\./, "\.")
    end
    ignore_re = Regexp.new(ignore_arr.join('|'))
  end

  # either a single file, or a directory with no ignores
  if not File.file?(source) and not File.directory?(source)
    raise IOError, "No such file or directory - #{source}"
  end
  if File.file?(source) or (File.directory?(source) and not has_ignore)
    source_file = source
    if has_ignore and (source =~ ignore_re)
      @logger.trace "After rejecting ignored files/dirs, there is no file to copy"
      source_file = nil
      result.stdout = "No files to copy"
      result.exit_code = 1
    end
    if source_file
      result = connection.scp_to(source_file, target, options, $dry_run)
      @logger.trace result.stdout
    end
  else # a directory with ignores
    dir_source = Dir.glob("#{source}/**/*").reject do |f|
      f =~ ignore_re
    end
    @logger.trace "After rejecting ignored files/dirs, going to scp [#{dir_source.join(", ")}]"

    # create necessary directory structure on host
    # run this quietly (no STDOUT)
    @logger.quiet(true)
    required_dirs = (dir_source.map{ | dir | File.dirname(dir) }).uniq
    require 'pathname'
    required_dirs.each do |dir|
      dir_path = Pathname.new(dir)
      if dir_path.absolute?
        mkdir_p(File.join(target, dir.gsub(source, '')))
      else
        mkdir_p( File.join(target, dir) )
      end
    end
    @logger.quiet(false)

    # copy each file to the host
    dir_source.each do |s|
      s_path = Pathname.new(s)
      if s_path.absolute?
        file_path = File.join(target, s.gsub(source,''))
      else
        file_path = File.join(target, s)
      end
      result = connection.scp_to(s, file_path, options, $dry_run)
      @logger.trace result.stdout
    end
  end

  return result
end

#exec(command, options = {}) ⇒ Object 



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# File 'lib/beaker/host.rb', line 253

def exec command, options={}
  # I've always found this confusing
  cmdline = command.cmd_line(self)

  if options[:silent]
    output_callback = nil
  else
    @logger.debug "\n#{log_prefix} #{Time.new.strftime('%H:%M:%S')}$ #{cmdline}"
    output_callback = logger.method(:host_output)
  end

  unless $dry_run
    # is this returning a result object?
    # the options should come at the end of the method signature (rubyism)
    # and they shouldn't be ssh specific
    result = nil

    seconds = Benchmark.realtime {
      result = connection.execute(cmdline, options, output_callback)
    }

    if not options[:silent]
      @logger.debug "\n#{log_prefix} executed in %0.2f seconds" % seconds
    end

    unless options[:silent]
      # What?
      result.log(@logger)
      # No, TestCase has the knowledge about whether its failed, checking acceptable
      # exit codes at the host level and then raising...
      # is it necessary to break execution??
      if !options[:accept_all_exit_codes] && !result.exit_code_in?(Array(options[:acceptable_exit_codes] || 0))
        raise CommandFailure, "Host '#{self}' exited with #{result.exit_code} running:\n #{cmdline}\nLast #{@options[:trace_limit]} lines of output were:\n#{result.formatted_output(@options[:trace_limit])}"
      end
    end
    # Danger, so we have to return this result?
    result
  end
end

#get_ip ⇒ Object

Determine the ip address of this host



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# File 'lib/beaker/host.rb', line 188

def get_ip
  @logger.warn("Uh oh, this should be handled by sub-classes but hasn't been")
end

#graceful_restarts? ⇒ Boolean

Mirrors the true/false value of the host’s ‘graceful-restarts’ property, or falls back to the value of is_using_passenger? if ‘graceful-restarts’ is nil, but only if this is not a PE run (foss only).

Returns:

  • (Boolean) 


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# File 'lib/beaker/host.rb', line 150

def graceful_restarts?
  graceful =
  if !self['graceful-restarts'].nil?
    self['graceful-restarts']
  else
    !is_pe? && is_using_passenger?
  end
  graceful
end

#has_key?(k) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/beaker/host.rb', line 114

def has_key? k
  @defaults.has_key?(k)
end

#hostname ⇒ Object

Return the public name of the particular host, which may be different then the name of the host provided in the configuration file as some provisioners create random, unique hostnames.



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# File 'lib/beaker/host.rb', line 130

def hostname
  @defaults['vmhostname'] || @name
end

#ip ⇒ Object

Return the ip address of this host



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# File 'lib/beaker/host.rb', line 193

def ip
  self[:ip] ||= get_ip
end

#is_pe? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/beaker/host.rb', line 138

def is_pe?
  @options.is_pe?
end

#is_using_passenger? ⇒ Boolean

True if this is a PE run, or if the host’s ‘passenger’ property has been set.

Returns:

  • (Boolean) 


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# File 'lib/beaker/host.rb', line 175

def is_using_passenger?
  is_pe? || self['passenger']
end

#is_x86_64? ⇒ Boolean

Returns true if x86_64, false otherwise.

Returns:

  • (Boolean) —

    true if x86_64, false otherwise



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# File 'lib/beaker/host.rb', line 205

def is_x86_64?
  @x86_64 ||= determine_if_x86_64
end

#log_prefix ⇒ Object 



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# File 'lib/beaker/host.rb', line 179

def log_prefix
  if @defaults['vmhostname']
    "#{self} (#{@name})"
  else
    self.to_s
  end
end

#merge_defaults_for_type(options, type) ⇒ Object 



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# File 'lib/beaker/host.rb', line 61

def merge_defaults_for_type options, type
  defaults = self.class.send "#{type}_defaults".to_sym
  defaults.merge(options.merge((options['HOSTS'][name])))
end

#mkdir_p(dir) ⇒ Boolean

Create the provided directory structure on the host

Parameters:

  • dir (String) —

    The directory structure to create on the host

Returns:

  • (Boolean) —

    True, if directory construction succeeded, otherwise False



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# File 'lib/beaker/host.rb', line 296

def mkdir_p dir
  result = exec(Beaker::Command.new("mkdir -p #{dir}"), :acceptable_exit_codes => [0, 1])
  result.exit_code == 0
end

#node_name ⇒ Object 



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# File 'lib/beaker/host.rb', line 66

def node_name
  # TODO: might want to consider caching here; not doing it for now because
  #  I haven't thought through all of the possible scenarios that could
  #  cause the value to change after it had been cached.
  result = puppet['node_name_value'].strip
end

#pkg_initialize ⇒ Object 



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# File 'lib/beaker/host.rb', line 56

def pkg_initialize
  # This method should be overridden by platform-specific code to
  # handle whatever packaging-related initialization is necessary.
end

#port_open?(port) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/beaker/host.rb', line 73

def port_open? port
  begin
    Timeout.timeout SELECT_TIMEOUT do
      TCPSocket.new(reachable_name, port).close
      return true
    end
  rescue Errno::ECONNREFUSED, Timeout::Error
    return false
  end
end

#puppet(command = 'agent') ⇒ Object

Returning our PuppetConfigReader here allows users of the Host class to do things like ‘host.puppet` to query the ’main’ section or, if they want the configuration for a particular run type, ‘host.puppet(’agent’)‘



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# File 'lib/beaker/host.rb', line 102

def puppet(command='agent')
  PuppetConfigReader.new(self, command)
end

#reachable_name ⇒ Object

Return the preferred method to reach the host, will use IP is available and then default to #hostname.



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# File 'lib/beaker/host.rb', line 94

def reachable_name
  self['ip'] || hostname
end

#to_s ⇒ Object

The #hostname of this host.



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# File 'lib/beaker/host.rb', line 124

def to_s
  hostname
end

#to_str ⇒ Object

The #hostname of this host.



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# File 'lib/beaker/host.rb', line 119

def to_str
  hostname
end

#up? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/beaker/host.rb', line 84

def up?
  begin
    Socket.getaddrinfo( reachable_name, nil )
    return true
  rescue SocketError
    return false
  end
end

#use_service_scripts? ⇒ Boolean

True if this is a pe run, or if the host has had a ‘use-service’ property set.

Returns:

  • (Boolean) 


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# File 'lib/beaker/host.rb', line 143

def use_service_scripts?
  is_pe? || self['use-service']
end

#uses_passenger!(puppetservice = 'apache2') ⇒ Object

Modifies the host settings to indicate that it will be using passenger service scripts, (apache2) by default. Does nothing if this is a PE host, since it is already using passenger.

Parameters:

  • puppetservice (String) (defaults to: 'apache2') —

    Name of the service script that should be called to stop/startPuppet on this host. Defaults to ‘apache2’.



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# File 'lib/beaker/host.rb', line 165

def uses_passenger!(puppetservice = 'apache2')
  if !is_pe?
    self['passenger'] = true
    self['puppetservice'] = puppetservice
    self['use-service'] = true
  end
  return true
end