Module: GoodData::Helpers

Extended by:
Hashie::Extensions::StringifyKeys::ClassMethods, Hashie::Extensions::SymbolizeKeys::ClassMethods
Defined in:
lib/gooddata/helpers/csv_helper.rb,
lib/gooddata/helpers/erb_helper.rb,
lib/gooddata/helpers/data_helper.rb,
lib/gooddata/helpers/auth_helpers.rb,
lib/gooddata/helpers/global_helpers.rb,
lib/gooddata/helpers/global_helpers_params.rb

Defined Under Namespace

Modules: AuthHelper, ErbHelper Classes: Csv, DataSource, DeepMergeableHash

Constant Summary collapse

ENCODED_PARAMS_KEY = 
'gd_encoded_params'
ENCODED_HIDDEN_PARAMS_KEY = 
'gd_encoded_hidden_params'

Class Method Summary collapse

Class Method Details

.create_lookup(collection, on) ⇒ Object 



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# File 'lib/gooddata/helpers/global_helpers_params.rb', line 227

def create_lookup(collection, on)
  lookup = {}
  if on.is_a?(Array)
    collection.each do |e|
      key = e.values_at(*on)
      lookup[key] = [] unless lookup.key?(key)
      lookup[key] << e
    end
  else
    collection.each do |e|
      key = e[on]
      lookup[key] = [] unless lookup.key?(key)
      lookup[key] << e
    end
  end
  lookup
end

.decode_params(params, options = {}) ⇒ Hash

Decodes params as they came from the platform.

Parameters:

  • options (Hash) (defaults to: {}) —

    a customizable set of options

Options Hash (options):

  • :resolve_reference_params (Boolean) —

    Resolve reference parameters in gd_encoded_params or not

Returns:

  • (Hash) —

    Decoded parameters



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# File 'lib/gooddata/helpers/global_helpers_params.rb', line 59

def decode_params(params, options = {})
  key = ENCODED_PARAMS_KEY.to_s
  hidden_key = ENCODED_HIDDEN_PARAMS_KEY.to_s
  data_params = params[key] || '{}'
  hidden_data_params = if params.key?(hidden_key) && params[hidden_key].nil?
                         "{\"#{hidden_key}\" : null}"
                       elsif params.key?(hidden_key)
                         params[hidden_key]
                       else
                         '{}'
                       end

  # Replace reference parameters by the actual values. Use backslash to escape a reference parameter, e.g: \${not_a_param},
  # the ${not_a_param} will not be replaced
  if options[:resolve_reference_params]
    regexps = Regexp.union(/\\\\/, /\\\$/, /\$\{(\w+)\}/)
    resolve_reference = lambda do |v|
      if v.is_a? Hash
        Hash[
          v.map do |k, v2|
            [k, resolve_reference.call(v2)]
          end
        ]
      elsif v.is_a? Array
        v.map do |v2|
          resolve_reference.call(v2)
        end
      elsif !v.is_a?(String)
        v
      else
        v.gsub(regexps) do |match|
          if match =~ /\\\\/
            data_params.is_a?(Hash) ? '\\' : '\\\\' # rubocop: disable Metrics/BlockNesting
          elsif match =~ /\\\$/
            '$'
          elsif match =~ /\$\{(\w+)\}/
            params["#{$1}"] || raise("The gd_encoded_params parameter contains unknow reference #{$1}") # rubocop: disable Style/PerlBackrefs
          end
        end
      end
    end

    data_params = if data_params.is_a? Hash
                    Hash[
                      data_params.map do |k, v|
                        [k, resolve_reference.call(v)]
                      end
                    ]
                  else
                    resolve_reference.call(data_params)
                  end
  end

  begin
    parsed_data_params = data_params.is_a?(Hash) ? data_params : JSON.parse(data_params)
    parsed_hidden_data_params = hidden_data_params.is_a?(Hash) ? hidden_data_params : JSON.parse(hidden_data_params)
  rescue JSON::ParserError => exception
    raise exception.class, "Error reading json from '#{key}' or '#{hidden_key}', reason: #{exception.message}"
  end

  # Add the nil on ENCODED_HIDDEN_PARAMS_KEY
  # if the data was retrieved from API You will not have the actual values so encode -> decode is not losless. The nil on the key prevents the server from deleting the key
  parsed_hidden_data_params[ENCODED_HIDDEN_PARAMS_KEY] = nil unless parsed_hidden_data_params.empty?

  params.delete(key)
  params.delete(hidden_key)
  params = params.deep_merge(parsed_data_params).deep_merge(parsed_hidden_data_params)

  if options[:convert_pipe_delimited_params]
    convert_pipe_delimited_params = lambda do |args|
      args = args.select { |k, _| k.include? "|" }
      lines = args.keys.map do |k|
        hash = {}
        last_a = nil
        last_e = nil
        k.split("|").reduce(hash) do |a, e|
          last_a = a
          last_e = e
          a[e] = {}
        end
        last_a[last_e] = args[k]
        hash
      end

      lines.reduce({}) do |a, e|
        a.deep_merge(e)
      end
    end

    pipe_delimited_params = convert_pipe_delimited_params.call(params)
    params.delete_if do |k, _|
      k.include?('|')
    end
    params = params.deep_merge(pipe_delimited_params)
  end

  params
end

.decrypt(database64, key) ⇒ Object 



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# File 'lib/gooddata/helpers/global_helpers.rb', line 221

def decrypt(database64, key)
  return '' if key.nil? || key.empty?

  data = Base64.decode64(database64)

  cipher = OpenSSL::Cipher::Cipher.new('aes-256-cbc')
  cipher.decrypt
  cipher.key = cipher_key = Digest::SHA256.digest(key)
  random_iv = data[0..15] # extract iv from first 16 bytes
  data = data[16..data.size - 1]
  cipher.iv = Digest::SHA256.digest(random_iv + cipher_key)[0..15]
  begin
    decrypted = cipher.update(data)
    decrypted << cipher.final
  rescue
    puts 'Error'
    return nil
  end

  decrypted
end

.deep_dup(an_object) ⇒ Object 



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# File 'lib/gooddata/helpers/global_helpers.rb', line 161

def deep_dup(an_object)
  case an_object
  when Array
    an_object.map { |it| GoodData::Helpers.deep_dup(it) }
  when Hash
    an_object.each_with_object(an_object.dup) do |(key, value), hash|
      hash[GoodData::Helpers.deep_dup(key)] = GoodData::Helpers.deep_dup(value)
    end
  when Object
    an_object.duplicable? ? an_object.dup : an_object
  end
end

.diff(old_list, new_list, options = {}) ⇒ Hash

A helper which allows you to diff two lists of objects. The objects can be arbitrary objects as long as they respond to to_hash because the diff is eventually done on hashes. It allows you to specify several options to allow you to limit on what the sameness test is done

four keys. :added contains the list that are in new_list but were not in the old_list :added contains the list that are in old_list but were not in the new_list :same contains objects that are in both lists and they are the same :changed contains list of objects that changed along ith original, the new one and the list of changes

Parameters:

  • old_list (Array<Object>) —

    List of objects that serves as a base for comparison

  • new_list (Array<Object>) —

    List of objects that is compared agianst the old_list

Returns:

  • (Hash) —

    A structure that contains the result of the comparison. There are



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# File 'lib/gooddata/helpers/global_helpers_params.rb', line 172

def diff(old_list, new_list, options = {})
  old_list = old_list.map(&:to_hash)
  new_list = new_list.map(&:to_hash)

  fields = options[:fields]
  lookup_key = options[:key]

  old_lookup = Hash[old_list.map { |v| [v[lookup_key], v] }]

  res = {
    :added => [],
    :removed => [],
    :changed => [],
    :same => []
  }

  new_list.each do |new_obj|
    old_obj = old_lookup[new_obj[lookup_key]]
    if old_obj.nil?
      res[:added] << new_obj
      next
    end

    if fields
      sliced_old_obj = old_obj.slice(*fields)
      sliced_new_obj = new_obj.slice(*fields)
    else
      sliced_old_obj = old_obj
      sliced_new_obj = new_obj
    end
    if sliced_old_obj != sliced_new_obj
      difference = sliced_new_obj.to_a - sliced_old_obj.to_a
      differences = Hash[*difference.mapcat { |x| x }]
      res[:changed] << {
        old_obj: old_obj,
        new_obj: new_obj,
        diff: differences
      }
    else
      res[:same] << old_obj
    end
  end

  new_lookup = Hash[new_list.map { |v| [v[lookup_key], v] }]
  old_list.each do |old_obj|
    new_obj = new_lookup[old_obj[lookup_key]]
    if new_obj.nil?
      res[:removed] << old_obj
      next
    end
  end

  res
end

.encode_hidden_params(params) ⇒ Hash

Encodes hidden parameters for passing them to GD execution platform.

Parameters:

  • params (Hash) —

    Parameters to be encoded

Returns:

  • (Hash) —

    Encoded parameters



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# File 'lib/gooddata/helpers/global_helpers_params.rb', line 51

def encode_hidden_params(params)
  encode_params(params, ENCODED_HIDDEN_PARAMS_KEY)
end

.encode_params(params, data_key) ⇒ Hash

Encodes parameters for passing them to GD execution platform. Core types are kept and complex types (arrays, structures, etc) are JSON encoded into key hash "gd_encoded_params" or "gd_encoded_hidden_params", depending on the 'hidden' method param. The two different keys are used because the params and hidden params are merged by the platform and if we use the same key, the param would be overwritten.

Core types are following:

  • Boolean (true, false)
  • Fixnum
  • Float
  • Nil
  • String

Parameters:

  • params (Hash) —

    Parameters to be encoded

Returns:

  • (Hash) —

    Encoded parameters



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# File 'lib/gooddata/helpers/global_helpers_params.rb', line 26

def encode_params(params, data_key)
  res = {}
  nested = {}
  core_types = [FalseClass, Integer, Float, NilClass, TrueClass, String]
  params.each do |k, v|
    if core_types.include?(v.class)
      res[k] = v
    else
      nested[k] = v
    end
  end
  res[data_key] = nested.to_json unless nested.empty?
  res
end

.encode_public_params(params) ⇒ Hash

Encodes public parameters for passing them to GD execution platform.

Parameters:

  • params (Hash) —

    Parameters to be encoded

Returns:

  • (Hash) —

    Encoded parameters



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# File 'lib/gooddata/helpers/global_helpers_params.rb', line 44

def encode_public_params(params)
  encode_params(params, ENCODED_PARAMS_KEY)
end

.encrypt(data, key) ⇒ Object

encrypts data with the given key. returns a binary data with the unhashed random iv in the first 16 bytes



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# File 'lib/gooddata/helpers/global_helpers.rb', line 208

def encrypt(data, key)
  cipher = OpenSSL::Cipher::Cipher.new('aes-256-cbc')
  cipher.encrypt
  cipher.key = key = Digest::SHA256.digest(key)
  random_iv = cipher.random_iv
  cipher.iv = Digest::SHA256.digest(random_iv + key)[0..15]
  encrypted = cipher.update(data)
  encrypted << cipher.final
  # add unhashed iv to front of encrypted data

  Base64.encode64(random_iv + encrypted)
end

.error(msg) ⇒ Object 



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# File 'lib/gooddata/helpers/global_helpers.rb', line 27

def error(msg)
  STDERR.puts(msg)
  exit 1
end

.find_goodfile(pwd = `pwd`.strip!, options = {}) ⇒ Object

FIXME: Windows incompatible



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# File 'lib/gooddata/helpers/global_helpers.rb', line 33

def find_goodfile(pwd = `pwd`.strip!, options = {})
  root = Pathname(options[:root] || '/')
  pwd = Pathname(pwd).expand_path
  loop do
    gf = pwd + '.gooddata'
    return gf if File.exist?(gf)
    pwd = pwd.parent
    break if root == pwd
  end
  nil
end

.get_path(an_object, path = [], default = nil) ⇒ Object 



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# File 'lib/gooddata/helpers/global_helpers.rb', line 72

def get_path(an_object, path = [], default = nil)
  return an_object if path.empty?
  return default if an_object.nil?

  path.reduce(an_object) do |a, e|
    a && a.key?(e) ? a[e] : default
  end
end

.hash_dfs(thing, &block) ⇒ Object 



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# File 'lib/gooddata/helpers/global_helpers.rb', line 89

def hash_dfs(thing, &block)
  if !thing.is_a?(Hash) && !thing.is_a?(Array) # rubocop:disable Style/GuardClause
  elsif thing.is_a?(Array)
    thing.each do |child|
      hash_dfs(child, &block)
    end
  else
    thing.each do |key, val|
      yield(thing, key)
      hash_dfs(val, &block)
    end
  end
end

.home_directory ⇒ Object 



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# File 'lib/gooddata/helpers/global_helpers.rb', line 85

def home_directory
  running_on_windows? ? ENV['USERPROFILE'] : ENV['HOME']
end

.interpolate_error_message(error) ⇒ Object 



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# File 'lib/gooddata/helpers/global_helpers.rb', line 154

def interpolate_error_message(error)
  return unless error && error['error'] && error['error']['message']
  message = error['error']['message']
  params = error['error']['parameters']
  sprintf(message, *params)
end

.interpolate_error_messages(errors) ⇒ Object 



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# File 'lib/gooddata/helpers/global_helpers.rb', line 150

def interpolate_error_messages(errors)
  errors.map { |e| interpolate_error_message(e) }
end

.join(master, slave, on, on2, options = {}) ⇒ Object 



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# File 'lib/gooddata/helpers/global_helpers.rb', line 110

def join(master, slave, on, on2, options = {})
  full_outer = options[:full_outer]
  inner = options[:inner]

  lookup = create_lookup(slave, on2)
  marked_lookup = {}
  results = master.reduce([]) do |a, line|
    matching_values = lookup[line.values_at(*on)] || []
    marked_lookup[line.values_at(*on)] = 1
    if matching_values.empty? && !inner
      a << line.to_hash
    else
      matching_values.each do |matching_value|
        a << matching_value.to_hash.merge(line.to_hash)
      end
    end
    a
  end

  if full_outer
    (lookup.keys - marked_lookup.keys).each do |key|
      puts lookup[key]
      results << lookup[key].first.to_hash
    end
  end
  results
end

.last_uri_part(uri) ⇒ Object 



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# File 'lib/gooddata/helpers/global_helpers.rb', line 81

def last_uri_part(uri)
  uri.split('/').last
end

.parse_http_exception(e) ⇒ Object 



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# File 'lib/gooddata/helpers/global_helpers.rb', line 184

def parse_http_exception(e)
  JSON.parse(e.response)
end

.prepare_mapping(what, for_what = nil, options = {}) ⇒ Array<GoodData::MdObject>

It takes what should be mapped to what and creates a mapping that is suitable for other internal methods. This means looking up the objects and returning it as array of pairs. The input can be given in several ways

  1. Hash. For example it could look like => 'label.state.id'

2 Arrays. In such case the arrays are zipped together. First item will be swapped for the first item in the second array etc. ['label.states.name'], ['label.state.id']

Parameters:

  • what (Hash | Array) —

    List/Hash of objects to be swapped

  • for_what (Array) (defaults to: nil) —

    List of objects to be swapped

Returns:



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# File 'lib/gooddata/helpers/global_helpers.rb', line 58

def prepare_mapping(what, for_what = nil, options = {})
  project = options[:project] || (for_what.is_a?(Hash) && for_what[:project]) || fail('Project has to be provided')
  mapping = if what.is_a?(Hash)
              whats = what.keys
              to_whats = what.values
              whats.zip(to_whats)
            elsif what.is_a?(Array) && for_what.is_a?(Array)
              whats.zip(to_whats)
            else
              [[what, for_what]]
            end
  mapping.pmap { |f, t| [project.objects(f), project.objects(t)] }
end

.running_on_a_mac? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/gooddata/helpers/global_helpers.rb', line 142

def running_on_a_mac?
  RUBY_PLATFORM =~ /-darwin\d/
end

.running_on_windows? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/gooddata/helpers/global_helpers.rb', line 138

def running_on_windows?
  RUBY_PLATFORM =~ /mswin32|mingw32/
end

.stringify_values(value) ⇒ Object 



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# File 'lib/gooddata/helpers/global_helpers_params.rb', line 245

def stringify_values(value)
  case value
  when nil
    value
  when Hash
    Hash[
      value.map do |k, v|
        [k, stringify_values(v)]
      end
    ]
  when Array
    value.map do |v|
      stringify_values(v)
    end
  else
    value.to_s
  end
end

.titleize(str) ⇒ Object 



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# File 'lib/gooddata/helpers/global_helpers.rb', line 103

def titleize(str)
  titleized = str.gsub(/[\.|_](.)/, &:upcase)
  titleized = titleized.tr('_', ' ')
  titleized[0] = titleized[0].upcase
  titleized
end

.to_boolean(param) ⇒ Boolean

Turns a boolean or string 'true' into boolean. Useful for bricks.

Parameters:

Returns:

  • (Boolean) —

    Returns true or false if the input is 'true' or true



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# File 'lib/gooddata/helpers/global_helpers.rb', line 202

def to_boolean(param)
  param == 'true' || param == true ? true : false
end

.underline(x) ⇒ Object 



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# File 'lib/gooddata/helpers/global_helpers.rb', line 146

def underline(x)
  '=' * x.size
end

.undot(params) ⇒ Object 



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# File 'lib/gooddata/helpers/global_helpers.rb', line 174

def undot(params)
  # for each key-value config given
  params.map do |k, v|
    # dot notation to hash
    k.split('__').reverse.reduce(v) do |memo, obj|
      GoodData::Helper.DeepMergeableHash[{ obj => memo }]
    end
  end
end

.zeroes(m, n, val = 0) ⇒ Array<Array>

Creates a matrix with zeroes in all places. It is implemented as an Array of Arrays. First rows then columns.

Parameters:

  • m (Integer) —

    Number of rows

  • n (Integer) —

    Number of cols

  • val (Integer) (defaults to: 0) —

    Alternatively can fill in positions with different values than zeroes. Defualt is zero.

Returns:

  • (Array<Array>) —

    Returns a matrix of zeroes



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# File 'lib/gooddata/helpers/global_helpers.rb', line 194

def zeroes(m, n, val = 0)
  m.times.map { n.times.map { val } }
end