Class: Beaker::Options::Parser

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

Overview

An Object that parses, merges and normalizes all supported Beaker options and arguments

Constant Summary collapse

GITREPO =
'git://github.com/puppetlabs'
LONG_OPTS =

These options can have the form of arg1,arg2 or [arg] or just arg, should default to []

[:helper, :load_path, :tests, :pre_suite, :post_suite, :install, :pre_cleanup, :modules]
RB_FILE_OPTS =

These options expand out into an array of .rb files

[:tests, :pre_suite, :post_suite, :pre_cleanup]
PARSE_ERROR =
Psych::SyntaxError

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initializeParser

Constructor for Parser



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# File 'lib/beaker/options/parser.rb', line 165

def initialize
  @command_line_parser = Beaker::Options::CommandLineParser.new
  @presets             = Beaker::Options::Presets.new
  @validator           = Beaker::Options::Validator.new
  @attribution         = Beaker::Options::OptionsHash.new
end

Instance Attribute Details

#attributionObject (readonly)

Returns the value of attribute attribution



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# File 'lib/beaker/options/parser.rb', line 18

def attribution
  @attribution
end

#optionsObject

The OptionsHash of all parsed options



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# File 'lib/beaker/options/parser.rb', line 17

def options
  @options
end

Instance Method Details

#check_hypervisor_config(visor) ⇒ nil

Validate the config file for visor exists.

Raises:

  • (ArgumentError)

    Raises error if config file does not exist or is not valid YAML



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# File 'lib/beaker/options/parser.rb', line 428

def check_hypervisor_config(visor)
  if ['blimpy'].include?(visor)
    @validator.check_yaml_file(@options[:ec2_yaml], "required by #{visor}")
  end

  if %w(aix solaris vcloud).include?(visor)
    @validator.check_yaml_file(@options[:dot_fog], "required by #{visor}")
  end
end

#file_list(paths) ⇒ Array

Generates a list of files based upon a given path or list of paths.

Looks recursively for .rb files in paths.

Raises:

  • (ArgumentError)

    Raises if no .rb files are found in searched directory or if no .rb files are found overall



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# File 'lib/beaker/options/parser.rb', line 62

def file_list(paths)
  files = []
  if !paths.empty?
    paths.each do |root|
      @validator.validate_path(root)

      path_files = []
      if File.file?(root)
        path_files << root
      elsif File.directory?(root) #expand and explore
        path_files = Dir.glob(File.join(root, '**/*.rb'))
                         .select { |f| File.file?(f) }
                         .sort_by { |file| [file.count('/'), file] }
      end

      @validator.validate_files(path_files, root)
      files += path_files
    end
  end

  @validator.validate_files(files, paths.to_s)
  files
end

#get_hypervisors(hosts) ⇒ Array

Get a unique list of hypervisors from list of host.



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# File 'lib/beaker/options/parser.rb', line 417

def get_hypervisors(hosts)
  hypervisors = []
  hosts.each_key { |name| hypervisors << hosts[name][:hypervisor].to_s }
  hypervisors.uniq
end

#get_roles(hosts) ⇒ Array

Get an array containing lists of roles by parsing each host in hosts.



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# File 'lib/beaker/options/parser.rb', line 405

def get_roles(hosts)
  roles = []
  hosts.each_key do |name|
    roles << hosts[name][:roles]
  end
  roles
end

#normalize_argsObject

Validate all merged options values for correctness

Currently checks:

- each host has a valid platform
- if a keyfile is provided then use it
- paths provided to --test, --pre-suite, --post-suite provided lists of .rb files for testing
- --fail-mode is one of 'fast', 'stop' or nil
- if using blimpy hypervisor an EC2 YAML file exists
- if using the aix, solaris, or vcloud hypervisors a .fog file exists
- that one and only one master is defined per set of hosts
- that solaris/windows/aix hosts are agent only for PE tests OR
- sets the default host based upon machine definitions
- if an ssh user has been defined make it the host user

Raises:

  • (ArgumentError)

    Raise if argument/options values are invalid



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# File 'lib/beaker/options/parser.rb', line 324

def normalize_args

  @options['HOSTS'].each_key do |name|
    @validator.validate_platform(@options['HOSTS'][name], name)
    @options['HOSTS'][name]['platform'] = Platform.new(@options['HOSTS'][name]['platform'])
  end

  #use the keyfile if present
  if @options.has_key?(:keyfile)
    @options[:ssh][:keys] = [@options[:keyfile]]
  end

  #split out arguments - these arguments can have the form of arg1,arg2 or [arg] or just arg
  #will end up being normalized into an array
  LONG_OPTS.each do |opt|
    if @options.has_key?(opt)
      update_option(opt, split_arg(@options[opt]), 'runtime')
      if RB_FILE_OPTS.include?(opt) && (not @options[opt] == [])
        update_option(opt, file_list(@options[opt]), 'runtime')
      end
      if opt == :install
        update_option(:install, parse_git_repos(@options[:install]), 'runtime')
      end
    else
      update_option(opt, [], 'runtime')
    end
  end

  @validator.validate_fail_mode(@options[:fail_mode])
  @validator.validate_preserve_hosts(@options[:preserve_hosts])

  #check for config files necessary for different hypervisors
  hypervisors = get_hypervisors(@options[:HOSTS])
  hypervisors.each do |visor|
    check_hypervisor_config(visor)
  end

  #check that roles of hosts make sense
  # - must be one and only one master
  master = 0
  roles  = get_roles(@options[:HOSTS])
  roles.each do |role_array|
    master += 1 if role_array.include?('master')
    @validator.validate_frictionless_roles(role_array)
  end

  @validator.validate_master_count(master)

  #check that windows/el-4 boxes are only agents (solaris can be a master in foss cases)
  @options[:HOSTS].each_key do |name|
    host = @options[:HOSTS][name]
    if host[:platform] =~ /windows|el-4/
      test_host_roles(name, host)
    end

    #check to see if a custom user account has been provided, if so use it
    if host[:ssh] && host[:ssh][:user]
      host[:user] = host[:ssh][:user]
    end

    # merge host tags for this host with the global/preset host tags
    host[:host_tags] = @options[:host_tags].merge(host[:host_tags] || {})
  end

  normalize_test_tags!
  @validator.validate_test_tags(
    @options[:test_tag_and],
    @options[:test_tag_or],
    @options[:test_tag_exclude]
  )
  resolve_symlinks!

  #set the default role
  set_default_host!(@options[:HOSTS])

end

#normalize_test_tags!Object

Note:

refer to DSL::TestTagging for test tagging implementation

Normalize include and exclude tags. This modifies @options.



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# File 'lib/beaker/options/parser.rb', line 442

def normalize_test_tags!
  @options[:test_tag_and]     ||= ''
  @options[:test_tag_or]      ||= ''
  @options[:test_tag_exclude] ||= ''
  @options[:test_tag_and]     = @options[:test_tag_and].split(',')     if @options[:test_tag_and].respond_to?(:split)
  @options[:test_tag_or]      = @options[:test_tag_or].split(',')      if @options[:test_tag_or].respond_to?(:split)
  @options[:test_tag_exclude] = @options[:test_tag_exclude].split(',') if @options[:test_tag_exclude].respond_to?(:split)
  @options[:test_tag_and].map!(&:downcase)
  @options[:test_tag_or].map!(&:downcase)
  @options[:test_tag_exclude].map!(&:downcase)
end

#parse_args(args = ARGV) ⇒ Object

Parses ARGV or provided arguments array, file options, hosts options and combines with environment variables and preset defaults to generate a Hash representing the Beaker options for a given test run

Order of priority is as follows:

1.  environment variables are given top priority
2.  ARGV or provided arguments array
3.  the 'CONFIG' section of the hosts file
4.  options file values
5.  subcommand options, if executing beaker subcommands
6.  subcommand options from $HOME/.beaker/subcommand_options.yaml
7.  project values in .beaker.yml
8.  default or preset values are given the lowest priority

Raises:

  • (ArgumentError)

    Raises error on bad input



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# File 'lib/beaker/options/parser.rb', line 214

def parse_args(args = ARGV)
  @options                        = @presets.presets
  @attribution = @attribution.merge(tag_sources(@presets.presets, "preset"))
  cmd_line_options                = @command_line_parser.parse(args)
  cmd_line_options[:command_line] = ([$0] + args).join(' ')
  @attribution = @attribution.merge(tag_sources(cmd_line_options, "flag"))

  # Merge options in reverse precedence order. First project options,
  # then global options from $HOME/.beaker/subcommand_options.yaml,
  # then subcommand options in the project.
  subcommand_options_file = Beaker::Subcommands::SubcommandUtil::SUBCOMMAND_OPTIONS
  {
    "project" => ".beaker.yml",
    "homedir" => "#{ENV['HOME']}/#{subcommand_options_file}",
    "subcommand" => subcommand_options_file,
  }.each_pair do |src, path|
    opts = if src == "project"
             Beaker::Options::SubcommandOptionsParser.parse_options_file(path)
           else
             Beaker::Options::SubcommandOptionsParser.parse_subcommand_options(args, path)
           end
    @attribution = @attribution.merge(tag_sources(opts, src))
    @options.merge!(opts)
  end

  file_options                    = Beaker::Options::OptionsFileParser.parse_options_file(cmd_line_options[:options_file] || options[:options_file])
  @attribution = @attribution.merge(tag_sources(file_options, "options_file"))

  # merge together command line and file_options
  #   overwrite file options with command line options
  cmd_line_and_file_options       = file_options.merge(cmd_line_options)

  # merge command line and file options with defaults
  #   overwrite defaults with command line and file options
  @options                        = @options.merge(cmd_line_and_file_options)

  if not @options[:help] and not @options[:beaker_version_print]
    hosts_options = parse_hosts_options

    # merge in host file vars
    #   overwrite options (default, file options, command line) with host file options
    @options      = @options.merge(hosts_options)
    @attribution = @attribution.merge(tag_sources(hosts_options, "host_file"))

    # re-merge the command line options
    #   overwrite options (default, file options, hosts file ) with command line arguments
    @options      = @options.merge(cmd_line_options)
    @attribution = @attribution.merge(tag_sources(cmd_line_options, "cmd"))

    # merge in env vars
    #   overwrite options (default, file options, command line, hosts file) with env
    env_vars      = @presets.env_vars

    @options = @options.merge(env_vars)
    @attribution = @attribution.merge(tag_sources(env_vars, "env"))

    normalize_args
  end

  @options
end

#parse_git_repos(git_opts) ⇒ Array

Converts array of paths into array of fully qualified git repo URLS with expanded keywords

Supports the following keywords

PUPPET
FACTER
HIERA
HIERA-PUPPET

Examples:

opts = ["PUPPET/3.1"]
parse_git_repos(opts) == ["#{GITREPO}/puppet.git#3.1"]


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# File 'lib/beaker/options/parser.rb', line 111

def parse_git_repos(git_opts)
  git_opts.map! { |opt|
    case opt
      when /^PUPPET\//
        opt = "#{repo}/puppet.git##{opt.split('/', 2)[1]}"
      when /^FACTER\//
        opt = "#{repo}/facter.git##{opt.split('/', 2)[1]}"
      when /^HIERA\//
        opt = "#{repo}/hiera.git##{opt.split('/', 2)[1]}"
      when /^HIERA-PUPPET\//
        opt = "#{repo}/hiera-puppet.git##{opt.split('/', 2)[1]}"
    end
    opt
  }
  git_opts
end

#parse_hosts_optionsHash

Parse hosts options from host files into a host options hash. Falls back to trying as a beaker-hostgenerator string if reading the hosts file doesn't work

Raises:

  • (ArgumentError)

    if a hosts file is generated, but it can't be read by the HostsFileParser



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# File 'lib/beaker/options/parser.rb', line 283

def parse_hosts_options
  if @options[:hosts_file].nil? || File.exists?(@options[:hosts_file])
    #read the hosts file that contains the node configuration and hypervisor info
    return Beaker::Options::HostsFileParser.parse_hosts_file(@options[:hosts_file])
  end

  dne_message = "\nHosts file '#{@options[:hosts_file]}' does not exist."
  dne_message << "\nTrying as beaker-hostgenerator input.\n\n"
  $stdout.puts dne_message
  require 'beaker-hostgenerator'

  hosts_file_content = begin
    bhg_cli = BeakerHostGenerator::CLI.new( [ @options[:hosts_file] ] )
    bhg_cli.execute
  rescue BeakerHostGenerator::Exceptions::Error,
    BeakerHostGenerator::Exceptions::InvalidNodeSpecError => error
    error_message = "\nbeaker-hostgenerator was not able to use this value as input."
    error_message << "\nExiting with an Error.\n\n"
    $stderr.puts error_message
    raise error
  end

  @options[:hosts_file_generated] = true
  Beaker::Options::HostsFileParser.parse_hosts_string( hosts_file_content )
end

#repoString

Returns the git repository used for git installations



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# File 'lib/beaker/options/parser.rb', line 22

def repo
  GITREPO
end

#resolve_symlinks!Object

Note:

doing it here allows us to not need duplicate logic, which we would need if we were doing it in the parser (–hosts & –config)

resolves all file symlinks that require it. This modifies @options.



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# File 'lib/beaker/options/parser.rb', line 93

def resolve_symlinks!
  if @options[:hosts_file] && !@options[:hosts_file_generated]
    @options[:hosts_file] = File.realpath(@options[:hosts_file])
  end
end

#set_default_host!(hosts) ⇒ Object

Add the 'default' role to the host determined to be the default. If a host already has the role default then do nothing. If more than a single host has the role 'default', raise error. Default host determined to be 1) the only host in a single host configuration, 2) the host with the role 'master' defined.



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# File 'lib/beaker/options/parser.rb', line 133

def set_default_host!(hosts)
  default           = []
  master            = []
  default_host_name = nil

  #look through the hosts and find any hosts with role 'default' and any hosts with role 'master'
  hosts.each_key do |name|
    host = hosts[name]
    if host[:roles].include?('default')
      default << name
    elsif host[:roles].include?('master')
      master << name
    end
  end

  # default_set? will throw an error if length > 1
  # and return false if no default is set.
  if !@validator.default_set?(default)
    #no default set, let's make one
    if not master.empty? and master.length == 1
      default_host_name = master[0]
    elsif hosts.length == 1
      default_host_name = hosts.keys[0]
    end
    if default_host_name
      hosts[default_host_name][:roles] << 'default'
    end
  end
end

#split_arg(arg) ⇒ Array

Normalizes argument into an Array. Argument can either be converted into an array of a single value, or can become an array of multiple values by splitting arg over ','. If argument is already an array that array is returned untouched.

Examples:

split_arg([1, 2, 3]) == [1, 2, 3]
split_arg(1) == [1]
split_arg("1,2") == ["1", "2"]
split_arg(nil) == []


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# File 'lib/beaker/options/parser.rb', line 42

def split_arg arg
  arry = []
  if arg.is_a?(Array)
    arry += arg
  elsif arg =~ /,/
    arry += arg.split(',')
  else
    arry << arg
  end
  arry
end

#tag_sources(options_hash, source) ⇒ Hash

Update the @attribution hash with the source of each key in the options_hash



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# File 'lib/beaker/options/parser.rb', line 177

def tag_sources(options_hash, source)
  hash = Beaker::Options::OptionsHash.new
  options_hash.each do |key, value|
    if value.is_a?(Hash)
      hash[key] = tag_sources(value, source)
    else
      hash[key] = source
    end
  end
  hash
end

#update_option(key, value, source) ⇒ Object

 Update the @option hash with a value and the @attribution hash with a source



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# File 'lib/beaker/options/parser.rb', line 194

def update_option(key, value, source)
  @options[key] = value
  @attribution[key] = source
end

#usageString

Returns a description of Beaker's supported arguments



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# File 'lib/beaker/options/parser.rb', line 28

def usage
  @command_line_parser.usage
end