Class: EtcdTools::Cli::EtcdERB

Inherits:
Object
  • Object
show all
Includes:
Etcd
Defined in:
lib/etcd-tools/cli/etcd_erb.rb

Instance Method Summary collapse

Methods included from Etcd

#etcd_connect

Constructor Details

#initialize ⇒ EtcdERB

Returns a new instance of EtcdERB.



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# File 'lib/etcd-tools/cli/etcd_erb.rb', line 32

def initialize
  self.optparse

  begin
    @etcd = etcd_connect @options[:url]
  rescue Etcd::ClusterConnectError
    $stderr.puts "Failed to connect to ETCD cluster"
    exit! 1
  end

  begin
    template = EtcdTools::Erb.new @etcd, ARGF.read
    puts template.result
  rescue Exception => e
    $stderr.puts "Failed to parse ERB template!"
    $stderr.puts e.message
    exit! 1
  end
end

Instance Method Details

#optparse ⇒ Object 



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# File 'lib/etcd-tools/cli/etcd_erb.rb', line 10

def optparse
  @options = Hash.new

  @options[:url] = ENV['ETCDCTL_ENDPOINT']
  @options[:url] ||= "http://127.0.0.1:2379"

  OptionParser.new do |opts|
    opts.banner = "Applies variables from ETCD onto ERB template\n\nUsage: #{$0} [OPTIONS] < template.erb > outfile"
    opts.separator ""
    opts.separator "Connection options:"
    opts.on("-u", "--url URL", "URL endpoint of the ETCD service (ETCDCTL_ENDPOINT envvar also applies) [DEFAULT: http://127.0.0.1:2379]") do |param|
      @options[:url] = param
    end
    opts.separator ""
    opts.separator "Common options:"
    opts.on_tail("-h", "--help", "show usage") do |param|
      puts opts
      exit! 0
    end
  end.parse!
end