Class: Wavefront::Cli::Sources

Inherits:
Wavefront::Cli show all
Defined in:
lib/wavefront/cli/sources.rb

Overview

Turn CLI input, from the ‘sources’ command, into metadata API calls

Instance Attribute Summary collapse

Attributes inherited from Wavefront::Cli

#arguments, #noop, #options

Instance Method Summary collapse

Methods inherited from Wavefront::Cli

#initialize, #validate_opts

Constructor Details

This class inherits a constructor from Wavefront::Cli

Instance Attribute Details

#out_format ⇒ Object

Returns the value of attribute out_format.



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# File 'lib/wavefront/cli/sources.rb', line 10

def out_format
  @out_format
end

#show_hidden ⇒ Object

Returns the value of attribute show_hidden.



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# File 'lib/wavefront/cli/sources.rb', line 10

def show_hidden
  @show_hidden
end

#show_tags ⇒ Object

Returns the value of attribute show_tags.



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# File 'lib/wavefront/cli/sources.rb', line 10

def show_tags
  @show_tags
end

#verbose ⇒ Object

Returns the value of attribute verbose.



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# File 'lib/wavefront/cli/sources.rb', line 10

def verbose
  @verbose
end

#wf ⇒ Object

Returns the value of attribute wf.



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# File 'lib/wavefront/cli/sources.rb', line 10

def wf
  @wf
end

Instance Method Details

#add_tag_handler(hosts, tags) ⇒ Object 



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# File 'lib/wavefront/cli/sources.rb', line 95

def add_tag_handler(hosts, tags)
  hosts ||= Socket.gethostname
  hosts = [hosts] if hosts.is_a?(String)

  hosts.each do |h|
    tags.each do |t|
      puts "Tagging '#{h}' with '#{t}'" if verbose
      begin
        wf.set_tag(h, t)
      rescue Wavefront::Exception::InvalidString
        puts 'ERROR: tag contains invalid characters.'
      end
    end
  end
end

#delete_tag_handler(hosts, tags) ⇒ Object 



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# File 'lib/wavefront/cli/sources.rb', line 111

def delete_tag_handler(hosts, tags)
  hosts ||= Socket.gethostname
  hosts = [hosts] if hosts.is_a?(String)

  hosts.each do |h|
    tags.each do |t|
      puts "Removing tag '#{t}' from '#{h}'" if verbose
      wf.delete_tag(h, t)
    end
  end
end

#describe_handler(hosts, desc) ⇒ Object 



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# File 'lib/wavefront/cli/sources.rb', line 66

def describe_handler(hosts, desc)
  hosts = [Socket.gethostname] if hosts.empty?
  hosts = [hosts] if hosts.is_a?(String)

  hosts.each do |h|
    if desc.empty?
      puts "clearing description of '#{h}'"
    else
      puts "setting '#{h}' description to '#{desc}'"
    end

    begin
      wf.set_description(h, desc)
    rescue Wavefront::Exception::InvalidString
      puts 'ERROR: description contains invalid characters.'
    end
  end
end

#display_data(result, method) ⇒ Object 



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# File 'lib/wavefront/cli/sources.rb', line 136

def display_data(result, method)
  return if noop
  if out_format == 'human'
    puts public_send('humanize_' + method, result)
  elsif out_format == 'json'
    puts result.to_json
  else
    pp result
  end
end

#humanize_list_source(result) ⇒ Object 



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# File 'lib/wavefront/cli/sources.rb', line 147

def humanize_list_source(result)
  hdr = format('%-25s %-30s %s', 'HOSTNAME', 'DESCRIPTION', 'TAGS')

  ret = result['sources'].each_with_object([hdr]) do |s, aggr|
    if s.include?('userTags') && s['userTags'].include?('hidden') &&
       !show_hidden
      next
    end

    if options[:tagged]
      skip = false
      options[:tagged].each do |t|
        unless s.key?('userTags') && s['userTags'].include?(t)
          skip = true
          break
        end
      end
      next if skip
    end

    if s['description']
      desc = s['description']
      desc = desc[0..27] + '...' if desc.length > 30
    else
      desc = ''
    end

    tags = s['userTags'] ? s['userTags'].join(', ') : ''

    aggr.<< format('%-25s %-30s %s', s['hostname'], desc, tags)
  end

  if show_tags
    ret.<< ['', format('%-25s%s', 'TAG', 'COUNT')]

    result['counts'].each do |tag, count|
      ret.<< format('%-25s%s', tag, count)
    end
  end

  ret.join("\n")
end

#humanize_show_source(data) ⇒ Object 



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# File 'lib/wavefront/cli/sources.rb', line 190

def humanize_show_source(data)
  ret = [data['hostname']]

  if data['description']
    ret.<< format('  %-15s%s', 'description', data['description'])
  end

  if data['userTags']
    ret.<< format('  %-15s%s', 'tags', data['userTags'].shift)
    data['userTags'].each { |t| ret.<< format('  %-15s%s', '', t) }
  end

  ret.join("\n")
end

#list_source_handler(pattern, start = false, limit = false) ⇒ Object 



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# File 'lib/wavefront/cli/sources.rb', line 50

def list_source_handler(pattern, start = false, limit = false)
  limit ||= 100

  q = {
    desc:         false,
    limit:        limit.to_i,
    pattern:      pattern
  }

  q[:lastEntityId] = start if start

  res = wf.show_sources(q)
  return if noop
  display_data(res, 'list_source')
end

#run ⇒ Object 



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# File 'lib/wavefront/cli/sources.rb', line 19

def run
  setup_wf
  @out_format = options[:sourceformat].to_s
  @show_hidden = options[:all]
  @show_tags = options[:tags]
  @verbose = options[:verbose]

  begin
    if options[:list]
      list_source_handler(options[:'<pattern>'], options[:start],
                          options[:limit])
    elsif options[:show]
      show_source_handler(options[:'<host>'])
    elsif options[:tag] && options[:add]
      add_tag_handler(options[:host], options[:'<tag>'])
    elsif options[:tag] && options[:delete]
      delete_tag_handler(options[:host], options[:'<tag>'])
    elsif options[:describe]
      describe_handler(options[:host], options[:'<description>'])
    elsif options[:undescribe]
      describe_handler(options[:'<host>'], '')
    elsif options[:untag]
      untag_handler(options[:'<host>'])
    else
      fail 'undefined sources error'
    end
  rescue Wavefront::Exception::InvalidSource
    abort 'ERROR: invalid source name.'
  end
end

#setup_wf ⇒ Object 



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# File 'lib/wavefront/cli/sources.rb', line 12

def setup_wf
  @wf = Wavefront::Metadata.new(options[:token], options[:endpoint],
                                options[:debug],
                                { verbose: options[:verbose],
                                  noop:    options[:noop]})
end

#show_source_handler(sources) ⇒ Object 



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# File 'lib/wavefront/cli/sources.rb', line 123

def show_source_handler(sources)
  sources.each do |s|
    begin
      result = wf.show_source(s)
    rescue RestClient::ResourceNotFound
      puts "Source '#{s}' not found."
      next
    end

    display_data(result, 'show_source')
  end
end

#untag_handler(hosts) ⇒ Object 



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# File 'lib/wavefront/cli/sources.rb', line 85

def untag_handler(hosts)
  hosts ||= Socket.gethostname
  hosts = [hosts] if hosts.is_a?(String)

  hosts.each do |h|
    puts "Removing all tags from '#{h}'" if verbose
    wf.delete_tags(h)
  end
end