Module: Pipely::Build::TemplateHelpers

Included in:
Template
Defined in:
lib/pipely/build/template_helpers.rb

Overview

Helper methods used by ERB templates.

Instance Method Summary collapse

Instance Method Details

#s3_asset_path(path) ⇒ Object 



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# File 'lib/pipely/build/template_helpers.rb', line 8

def s3_asset_path(path)
  "#{s3_asset_prefix if '/' == path[0]}#{path}"
end

#s3n_asset_path(path) ⇒ Object 



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# File 'lib/pipely/build/template_helpers.rb', line 12

def s3n_asset_path(path)
  "#{s3n_asset_prefix if '/' == path[0]}#{path}"
end

#s3n_step_path(path) ⇒ Object 



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# File 'lib/pipely/build/template_helpers.rb', line 16

def s3n_step_path(path)
  "#{s3n_step_prefix if '/' == path[0]}#{path}"
end

#streaming_hadoop_step(options) ⇒ Object 



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# File 'lib/pipely/build/template_helpers.rb', line 20

def streaming_hadoop_step(options)
  parts = [ '/home/hadoop/contrib/streaming/hadoop-streaming.jar' ]

  if jars = options[:lib_jars]
    parts += Array(jars).map { |jar| ['-libjars', "#{jar}"] }.flatten
  end

  (options[:defs] || {}).each do |name, value|
    parts += ['-D', "#{name}=#{value}".gsub(',', "\\,")]
  end

  Array(options[:input]).each do |input|
    parts += [ '-input', s3n_asset_path(input) ]
  end

  Array(options[:output]).each do |output|
    parts += ['-output', s3_asset_path(output) ]
  end

  if options[:outputformat]
    parts += ['-outputformat', options[:outputformat] ]
  end

  if options[:partitioner]
    parts += ['-partitioner', options[:partitioner] ]
  end

  Array(options[:mapper]).each do |mapper|
    parts += ['-mapper', s3n_step_path(mapper) ]
  end

  Array(options[:reducer]).each do |reducer|
    parts += ['-reducer', s3n_step_path(reducer) ]
  end

  Array(options[:cache_file]).each do |cache_file|
    parts += ['-cacheFile', s3n_asset_path(cache_file)]
  end

  (options[:env] || {}).each do |name, value|
    parts += ['-cmdenv', "#{name}=#{value}"]
  end

  parts.join(',')
end