Class: Assimilate::Command

Inherits:
Object
  • Object
show all
Defined in:
lib/assimilate/command.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Command

Returns a new instance of Command.



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# File 'lib/assimilate/command.rb', line 6

def initialize
  @options = {}
  @parser = OptionParser.new do |opts|
    opts.banner = "Usage: assimilate [command] [options]"

    opts.on("--config FILENAME", String, "Catalog database configuration file") do |f|
      @options[:config] = f
    end

    opts.on("--id FIELDNAME", String, "Field name to be used for record identifier") do |f|
      @options[:idfield] = f
    end

    opts.on("--commit", "Commit changes to database") do
      @options[:commit] = true
    end

    opts.on("--subset", "Only consider the fields in the input file") do
      @options[:subset] = true
    end

    opts.on("--nodeletes", "Do NOT delete existing records that are not present in the input") do
      @options[:nodeletes] = true
    end

    opts.on("--key FIELDNAME", String, "(*extend* only; optional) Hash key to store extended attributes under") do |f|
      @options[:key] = f
    end

    opts.on("--datestamp DATESTRING", String, "(*load* only) Datestamp to record for file batch operation") do |s|
      @options[:datestamp] = s
    end

    opts.on("--domain STRING", String, "Domain value to apply to each record") do |s|
      @options[:domain] = s
    end

    opts.on("--compare FIELDNAME", String, "(*extend* only) Optional field to check whether an update is current (e.g. timestamp)") do |f|
      @options[:compare] = f
    end
  end
end

Instance Attribute Details

#command ⇒ Object (readonly)

Returns the value of attribute command.



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# File 'lib/assimilate/command.rb', line 4

def command
  @command
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/assimilate/command.rb', line 4

def options
  @options
end

Instance Method Details

#execute(command, options, filenames = nil) ⇒ Object 



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# File 'lib/assimilate/command.rb', line 64

def execute(command, options, filenames = nil)
  filename = filenames.first

  case command
  when 'version'
    puts "Assimilate #{Assimilate::VERSION}"

  when 'load'
    raise OptionParser::MissingArgument, "missing datestamp" unless options[:datestamp]

    results = Assimilate.load(filename, options)
    logmessage(command, options, results)

  when 'extend'
    # keyfield is an *optional* parameter

    results = Assimilate.extend_data(filename, options)
    logmessage(command, options, results)


  else
    raise "unknown command #{command}"
  end
end

#idsummary(ids) ⇒ Object 



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# File 'lib/assimilate/command.rb', line 89

def idsummary(ids)
  if ids.any?
    "(#{ids.take(10).join(',')})"
  end
end

#logmessage(command, options, results) ⇒ Object 



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# File 'lib/assimilate/command.rb', line 95

def logmessage(command, options, results)
  $stderr.puts "assimilate \#{command} for \#{options[:domain]} using \#{options[:idfield]}\n"

  case command
  when 'load'
    $stderr.puts "  Original record count: \#{results[:baseline_count]}\n     Final record count: \#{results[:final_count]}\n      Unchanged records: \#{results[:unchanged_count]}\n            New records: \#{results[:adds_count]} \#{idsummary(results[:new_ids])}\n                Deletes: \#{results[:deletes_count]} \#{idsummary(results[:deleted_ids])}\n"
    if options[:nodeletes]
      warn "\t\t\tNO DELETIONS"
    end

    warn "                Updates: \#{results[:updates_count]} \#{idsummary(results[:updated_ids])}\n"
    if results[:updated_fields].any?
      $stderr.puts " Update counts by field:\n"
      results[:updated_fields].sort.each do |k,v|
        $stderr.puts "              \#{k.ljust(30, '.')}\#{\"%6d\" % v}\n"
      end
    end
  when 'extend'
    $stderr.puts "  Original record count: \#{results[:baseline_count]}\n     Final record count: \#{results[:final_count]}\n        New identifiers: \#{results[:adds_count]} \#{options[:idfield]} (\#{results[:new_ids].take(10).join(',')})\n           Distinct ids: \#{results[:distinct_ids]}\n      Unchanged records: \#{results[:unchanged_count]}\n                Updates: \#{results[:updates_count]}\n"
    if results[:updated_fields].any?
      results[:updated_fields].each do |k,v|
        $stderr.puts "                      \#{options[:key] && options[:key] + '.'}\#{k}: \#{v}\n"
      end
    end
  else
    $stderr.puts results.inspect
  end
end

#parse(argv = ARGV) ⇒ Object 



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# File 'lib/assimilate/command.rb', line 49

def parse(argv = ARGV)
  @command = argv.shift
  filenames = @parser.parse(argv)

  unless command == 'version'
    raise OptionParser::MissingArgument, "missing config" unless options[:config]
    raise OptionParser::MissingArgument, "missing idfield" unless options[:idfield]
    raise OptionParser::MissingArgument, "missing domain" unless options[:domain]
    raise "missing filename" unless filenames.any?
  end

  # argv remnants are filenames
  [@command, @options, filenames]
end