Class: HaveAPI::CLI::Cli

Inherits:
Object
  • Object
show all
Includes:
Utils
Defined in:
lib/haveapi/cli/cli.rb

Class Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Utils

#param_option, #read_param

Constructor Details

#initialize ⇒ Cli

Returns a new instance of Cli.



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# File 'lib/haveapi/cli/cli.rb', line 34

def initialize
  @config = read_config || {}
  args, @opts = options

  connect_api unless @api

  if @action
    method(@action.first).call( * @action[1..-1] )
    exit
  end

  if (@opts[:help] && args.empty?) || args.empty?
    show_help do
      puts "\nAvailable resources:"
      list_resources
    end
  end

  resources = args[0].split('.')

  if cmd = find_command(resources, args[1])
    authenticate if @auth
    c = cmd.new(@opts, HaveAPI::Client::Client.new(nil, communicator: @api))

    cmd_opt = OptionParser.new do |opts|
      opts.banner = "\nCommand options:"
      c.options(opts)

      opts.on('-h', '--help', 'Show this message') do
        show_help do
          puts cmd_opt.help
        end
      end
    end

    if @opts[:help]
      show_help do
        puts cmd_opt.help
      end
    end

    if sep = ARGV.index('--')
      cmd_opt.parse!(ARGV[sep+1..-1])
    end

    c.exec(args[2..-1] || [])

    exit
  end

  if args.count == 1
    describe_resource(resources)
    exit(true)
  end

  action = @api.get_action(resources, args[1].to_sym, args[2..-1])

  unless action
    warn "Resource or action '#{args[0]} #{args[1]}' not found"
    puts
    show_help(false)
  end

  if authenticate(action) && !action.unresolved_args?
    begin
      action.update_description(@api.describe_action(action))

    rescue RestClient::ResourceNotFound => e
      format_errors(action, 'Object not found', {})
      exit(false)
    end
  end

  @selected_params = @opts[:output] ? @opts[:output].split(',').uniq
                                    : nil

  @input_params = parameters(action)

  includes = build_includes(action) if @selected_params
  @input_params[:meta] = { includes: includes } if includes

  begin
    ret = action.execute(@input_params, raw: @opts[:raw])

  rescue HaveAPI::Client::ValidationError => e
    format_errors(action, 'input parameters not valid', e.errors)
    exit(false)
  end

  if ret[:status]
    format_output(action, ret[:response])

  else
    format_errors(action, ret[:message], ret[:errors])
    exit(false)
  end

  if action.blocking?
    res = HaveAPI::Client::Response.new(action, ret)

    if res.meta[:action_state_id]
      state = ActionState.new(
          @opts,
          HaveAPI::Client::Client.new(@api.url, communicator: @api, block: false),
          res.meta[:action_state_id]
      )

      if @opts[:block]
        puts
        action_ret = state.wait_for_completion(timeout: @opts[:timeout])

        if action_ret.nil?
          warn "Timeout"
          exit(false)
        end

      else
        puts
        state.print_help
      end
    end
  end
end

Class Attribute Details

.auth_methods ⇒ Object

Returns the value of attribute auth_methods.



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# File 'lib/haveapi/cli/cli.rb', line 11

def auth_methods
  @auth_methods
end

.commands ⇒ Object

Returns the value of attribute commands.



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# File 'lib/haveapi/cli/cli.rb', line 11

def commands
  @commands
end

Class Method Details

.register_auth_method(name, klass) ⇒ Object 



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# File 'lib/haveapi/cli/cli.rb', line 21

def register_auth_method(name, klass)
  @auth_methods ||= {}
  @auth_methods[name] = klass
end

.register_command(cmd) ⇒ Object 



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# File 'lib/haveapi/cli/cli.rb', line 26

def register_command(cmd)
  @commands ||= []
  @commands << cmd
end

.run ⇒ Object 



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# File 'lib/haveapi/cli/cli.rb', line 13

def run
  c = new

rescue Interrupt
  warn "Interrupted"
  exit(false)
end

Instance Method Details

#api_url ⇒ Object 



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# File 'lib/haveapi/cli/cli.rb', line 158

def api_url
  @opts[:client]
end

#authenticate(action = nil) ⇒ Object 



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# File 'lib/haveapi/cli/cli.rb', line 612

def authenticate(action = nil)
  if @auth
    @auth.validate
    @auth.authenticate

    if @opts[:save]
      cfg = server_config(api_url)
      cfg[:auth][@opts[:auth]] = @auth.save
      cfg[:last_auth] = @opts[:auth]
      write_config
    end

  else
    # FIXME: exit as auth is needed and has not been selected
  end

  return true
end

#check_compat ⇒ Object 



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# File 'lib/haveapi/cli/cli.rb', line 419

def check_compat
  case @api.compatible?
  when :compatible
    puts 'compatible'
    exit

  when :imperfect
    puts 'imperfect'
    exit(1)

  else
    puts 'incompatible'
    exit(2)
  end
end

#describe_resource(path) ⇒ Object 



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# File 'lib/haveapi/cli/cli.rb', line 435

def describe_resource(path)
  desc = @api.describe_resource(path)

  unless desc
    warn "Resource #{path.join('.')} does not exist"
    exit(false)
  end

  unless desc[:resources].empty?
    puts 'Resources:'

    desc[:resources].each_key do |r|
      puts "  #{r}"
    end
  end

  puts '' if !desc[:resources].empty? && !desc[:actions].empty?

  unless desc[:actions].empty?
    puts 'Actions:'

    desc[:actions].each_key do |a|
      puts "  #{a}"
    end
  end
end

#format_output(action, response, out = $>) ⇒ Object 



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# File 'lib/haveapi/cli/cli.rb', line 502

def format_output(action, response, out = $>)
  if @opts[:raw]
    puts JSON.generate(response)
    return
  end

  return if response.empty? || action.output.nil?

  namespace = action.namespace(:output).to_sym

  if action.output_layout.to_sym == :custom
      return PP.pp(response[namespace], out)
  end

  cols = []

  (@selected_params || action.params.keys).each do |raw_name|
    col = {}
    name = nil
    param = nil

    # Fetching an associated attribute
    if raw_name.to_s.index('.')
      parts = raw_name.to_s.split('.').map! { |v| v.to_sym }
      name = parts.first.to_sym

      top = action.params

      parts.each do |part|
        fail "'#{part}' not found" unless top.has_key?(part)

        if top[part][:type] == 'Resource'
          param = top[part]
          top = @api.get_action(top[part][:resource], :show, []).params

        else
          param = top[part]
          break
        end
      end

      col[:display] = Proc.new do |r|
        next '' unless r

        top = r
        parts[1..-1].each do |part|
          fail "'#{part}' not found" unless top.has_key?(part)
          break if top[part].nil?
          top = top[part]
        end

        case param[:type]
        when 'Resource'
          "#{top[ param[:value_label].to_sym ]} (##{top[ param[:value_id].to_sym ]})"

        when 'Datetime'
          format_date(top)

        else
          top
        end
      end

      col[:label] = raw_name

    else # directly accessible parameter
      name = raw_name.to_sym
      param = action.params[name]
      fail "parameter '#{name}' does not exist" if param.nil?

      if param[:type] == 'Resource'
        col[:display] = Proc.new do |r|
          next '' unless r
          "#{r[ param[:value_label].to_sym ]} (##{r[ param[:value_id].to_sym ]})"
        end

      elsif param[:type] == 'Datetime'
        col[:display] = ->(date) { format_date(date) }
      end
    end

    col.update({
        name: name,
        align: %w(Integer Float).include?(param[:type]) ? 'right' : 'left',
    })

    col[:label] ||= param[:label] && !param[:label].empty? ? param[:label] : name.upcase

    cols << col
  end

  OutputFormatter.print(
      response[namespace],
      cols,
      header: @opts[:header].nil?,
      sort: @opts[:sort] && @opts[:sort].to_sym,
      layout: @opts[:layout]
  )
end

#header_for(action, param) ⇒ Object 



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# File 'lib/haveapi/cli/cli.rb', line 602

def header_for(action, param)
  params = action.params

  if params.has_key?(param) && params[param][:label]
    params[param][:label]
  else
    param.to_s.upcase
  end
end

#list_actions(v = nil) ⇒ Object 



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# File 'lib/haveapi/cli/cli.rb', line 403

def list_actions(v=nil)
  desc = @api.describe_api(v)

  desc[:resources].each do |resource, children|
    nested_resource(resource, children, true)
  end
end

#list_auth(v = nil) ⇒ Object 



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# File 'lib/haveapi/cli/cli.rb', line 387

def list_auth(v=nil)
  desc = @api.describe_api(v)

  desc[:authentication].each_key do |auth|
    puts auth if Cli.auth_methods.has_key?(auth)
  end
end

#list_resources(v = nil) ⇒ Object 



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# File 'lib/haveapi/cli/cli.rb', line 395

def list_resources(v=nil)
  desc = @api.describe_api(v)

  desc[:resources].each do |resource, children|
    nested_resource(resource, children, false)
  end
end

#list_versions ⇒ Object 



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# File 'lib/haveapi/cli/cli.rb', line 375

def list_versions
  desc = @api.available_versions

  desc[:versions].each do |v, _|
    next if v == :default

    v_int = v.to_s.to_i

    puts "#{v_int == desc[:default] ? '*' : ' '} v#{v}"
  end
end

#nested_resource(prefix, children, actions = false) ⇒ Object 



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# File 'lib/haveapi/cli/cli.rb', line 462

def nested_resource(prefix, children, actions=false)
  if actions
    children[:actions].each do |action, _|
      puts "#{prefix}##{action}"
    end
  else
    puts prefix
  end

  children[:resources].each do |resource, children|
    nested_resource("#{prefix}.#{resource}", children, actions)
  end
end

#options ⇒ Object 



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# File 'lib/haveapi/cli/cli.rb', line 162

def options
  options = {
      client: default_url,
      block: true,
      verbose: false,
  }

  @global_opt = OptionParser.new do |opts|
    opts.banner = "Usage: #{$0} [options] <resource> <action> [objects ids] [-- [parameters]]"

    opts.on('-u', '--api URL', 'API URL') do |url|
      options[:client] = url
    end

    opts.on('-a', '--auth METHOD', Cli.auth_methods.keys, 'Authentication method') do |m|
      options[:auth] = m
      connect_api(url: options[:client], version: options[:version])

      @auth = Cli.auth_methods[m].new(
        @api,
        @api.describe_api(options[:version])[:authentication][m],
        server_config(options[:client])[:auth][m]
      )

      opts.separator "\nAuthentication options:"
      @auth.options(opts)
    end

    opts.on('--list-versions', 'List all available API versions') do
      @action = [:list_versions]
    end

    opts.on('--list-auth-methods [VERSION]', 'List available authentication methods') do |v|
      @action = [:list_auth, v && v.sub(/^v/, '')]
    end

    opts.on('--list-resources [VERSION]', 'List all resource in API version') do |v|
      @action = [:list_resources, v && v.sub(/^v/, '')]
    end

    opts.on('--list-actions [VERSION]', 'List all resources and actions in API version') do |v|
      @action = [:list_actions, v && v.sub(/^v/, '')]
    end

    opts.on('--version VERSION', 'Use specified API version') do |v|
      options[:version] = v
    end

    opts.on('-c', '--columns', 'Print output in columns') do
      options[:layout] = :columns
    end

    opts.on('-H', '--no-header', 'Hide header row') do |h|
      options[:header] = false
    end

    opts.on('-L', '--list-parameters', 'List output parameters') do |l|
      options[:list_output] = true
    end

    opts.on('-o', '--output PARAMETERS', 'Parameters to display, separated by a comma') do |o|
      options[:output] = o
    end

    opts.on('-r', '--rows', 'Print output in rows') do
      options[:layout] = :rows
    end

    opts.on('-s', '--sort PARAMETER', 'Sort output by parameter') do |p|
      options[:sort] = p
    end

    opts.on('--save', 'Save credentials to config file for later use') do
      options[:save] = true
    end

    opts.on('--raw', 'Print raw response as is') do
      options[:raw] = true
    end

    opts.on('--timestamp', 'Display Datetime parameters as timestamp') do
      options[:datetime] = :timestamp
    end

    opts.on('--utc', 'Display Datetime parameters in UTC') do
      options[:datetime] = :utc
    end

    opts.on('--localtime', 'Display Datetime parameters in local timezone') do
      options[:datetime] = :local
    end

    opts.on('--date-format FORMAT', 'Display Datetime in custom format') do |f|
      options[:date_format] = f
    end

    opts.on('--[no-]block', 'Toggle action blocking mode') do |v|
      options[:block] = v
    end

    opts.on(
        '--timeout SEC',
        Float,
        'Fail when the action does not finish within the timeout'
    ) do |v|
      options[:timeout] = v.to_f
    end

    opts.on('-v', '--[no-]verbose', 'Run verbosely') do |v|
      options[:verbose] = v
    end

    opts.on('--client-version', 'Show client version') do
      @action = [:show_version]
    end

    opts.on('--protocol-version', 'Show protocol version') do
      @action = [:protocol_version]
    end

    opts.on('--check-compatibility', 'Check compatibility with API server') do
      @action = [:check_compat]
    end

    opts.on('-h', '--help', 'Show this message') do
      options[:help] = true
    end
  end

  args = []

  ARGV.each do |arg|
    if arg == '--'
      break
    else
      args << arg
    end
  end

  @global_opt.parse!(args)

  unless options[:auth]
    cfg = server_config(options[:client])
    connect_api(url: options[:client], version: options[:version]) unless @api

    if m = cfg[:last_auth]
      @auth = Cli.auth_methods[m].new(
        @api,
        @api.describe_api(options[:version])[:authentication][m],
        cfg[:auth][m],
      )
    end
  end

  [args, options]
end

#parameters(action) ⇒ Object 



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# File 'lib/haveapi/cli/cli.rb', line 319

def parameters(action)
  options = {}
  sep = ARGV.index('--')

  @action_opt = OptionParser.new do |opts|
    opts.banner = ''

    if action.input
      action.input[:parameters].each do |name, p|
        opts.on(param_option(name, p), p[:description] || p[:label] || ' ') do |*args|
          arg = args.first

          if arg.nil?
            options[name] = read_param(name, p)

          else
            options[name] = args.first
          end
        end
      end
    end

    opts.on('-h', '--help', 'Show this message') do
      @opts[:help] = true
    end
  end

  if @opts[:help]
    show_help do
      puts 'Action description:'
      puts action.description, "\n"
      print 'Input parameters:'
      puts @action_opt.help
      puts
      puts 'Output parameters:'

      action.params.each do |name, param|
        puts sprintf("    %-32s %s", name, param[:description])
      end

      print_examples(action)
    end
  end

  if @opts[:list_output]
    action.params.each_key { |name| puts name }
    exit
  end

  return {} unless sep

  @action_opt.parse!(ARGV[sep+1..-1])

  options
end

#print_examples(action) ⇒ Object 



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# File 'lib/haveapi/cli/cli.rb', line 495

def print_examples(action)
  unless action.examples.empty?
    puts "\nExamples:\n"
    ExampleFormatter.format_examples(self, action)
  end
end

#protocol_version ⇒ Object 



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# File 'lib/haveapi/cli/cli.rb', line 415

def protocol_version
  puts HaveAPI::Client::PROTOCOL_VERSION
end

#show_help(exit_code = true) ⇒ Object 



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# File 'lib/haveapi/cli/cli.rb', line 476

def show_help(exit_code = true)
  puts @global_opt.help

  if Cli.commands
    puts
    puts 'Commands:'
    Cli.commands.each do |cmd|
      puts sprintf(
          '%-36s %s',
          "#{cmd.resource.join('.')} #{cmd.action} #{cmd.args}",
          cmd.desc
      )
    end
  end

  yield if block_given?
  exit(exit_code)
end

#show_version ⇒ Object 



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# File 'lib/haveapi/cli/cli.rb', line 411

def show_version
  puts HaveAPI::Client::VERSION
end