Module: Hoodie::Utils::ClassMethods

Defined in:
lib/hoodie/utils.rb

Instance Method Summary collapse

Instance Method Details

#callable(call_her) ⇒ Object 



33
34
35
 
# File 'lib/hoodie/utils.rb', line 33

def callable(call_her)
  call_her.respond_to?(:call) ? call_her : lambda { call_her }
end

#caller_name(position = 0) ⇒ Object 



49
50
51
 
# File 'lib/hoodie/utils.rb', line 49

def caller_name(position = 0)
  caller[position][/`.*'/][1..-2]
end

#camelize(underscored_word) ⇒ Object 



37
38
39
 
# File 'lib/hoodie/utils.rb', line 37

def camelize(underscored_word)
  underscored_word.to_s.gsub(/(?:^|_)(.)/) { $1.upcase }
end

#class_name ⇒ Object 



45
46
47
 
# File 'lib/hoodie/utils.rb', line 45

def class_name
  demodulize(self.class)
end

#classify(table_name) ⇒ Object 



41
42
43
 
# File 'lib/hoodie/utils.rb', line 41

def classify(table_name)
  camelize singularize(table_name.to_s.sub(/.*\./, ''))
end

#command_in_path?(command) ⇒ Boolean

Checks in PATH returns true if the command is found

Returns:

  • (Boolean) 


124
125
126
127
128
129
 
# File 'lib/hoodie/utils.rb', line 124

def command_in_path?(command)
  found = ENV['PATH'].split(File::PATH_SEPARATOR).map do |p|
    File.exist?(File.join(p, command))
  end
  found.include?(true)
end

#demodulize(class_name_in_module) ⇒ Object 



53
54
55
 
# File 'lib/hoodie/utils.rb', line 53

def demodulize(class_name_in_module)
  class_name_in_module.to_s.sub(/^.*::/, '')
end

#pluralize(word) ⇒ Object 



57
58
59
 
# File 'lib/hoodie/utils.rb', line 57

def pluralize(word)
  word.to_s.sub(/([^s])$/, '\1s')
end

#request_id ⇒ Object 



82
83
84
 
# File 'lib/hoodie/utils.rb', line 82

def request_id
  SecureRandom.uuid
end

#retrier(opts = {}, &block) ⇒ Block

Runs a code block, and retries it when an exception occurs. Should the number of retries be reached without success, the last exception will be raised.

Parameters:

  • opts (Hash{Symbol => Value}) (defaults to: {})

Options Hash (opts):

  • :tries (Fixnum) —

    number of attempts to retry before raising the last exception

  • :sleep (Fixnum) —

    number of seconds to wait between retries, use lambda to exponentially increasing delay between retries

  • :on (Array(Exception)) —

    the type of exception(s) to catch and retry on

  • :matching (Regex) —

    match based on the exception message

  • :ensure (Block) —

    ensure a block of code is executed, regardless of whether an exception is raised

Returns:

  • (Block) 


151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
 
# File 'lib/hoodie/utils.rb', line 151

def retrier(opts = {}, &block)
  defaults = {
    tries:    2,
    sleep:    1,
    on:       StandardError,
    matching: /.*/,
    :ensure => Proc.new {}
  }

  check_for_invalid_options(opts, defaults)
  defaults.merge!(opts)

  return if defaults[:tries] == 0

  on_exception, tries = [defaults[:on]].flatten, defaults[:tries]
  retries = 0
  retry_exception = nil

  begin
    yield retries, retry_exception
  rescue *on_exception => exception
    raise unless exception.message =~ defaults[:matching]
    raise if retries+1 >= defaults[:tries]

    # Interrupt Exception could be raised while sleeping
    begin
      sleep defaults[:sleep].respond_to?(:call) ?
        defaults[:sleep].call(retries) : defaults[:sleep]
    rescue *on_exception
    end

    retries += 1
    retry_exception = exception
    retry
  ensure
    defaults[:ensure].call(retries)
  end
end

#singularize(word) ⇒ Object 



61
62
63
 
# File 'lib/hoodie/utils.rb', line 61

def singularize(word)
  word.to_s.sub(/s$/, '').sub(/ie$/, 'y')
end

#terminal_dimensions ⇒ Integer

Returns the columns and lines of the current tty.

Returns:

  • (Integer) —

    number of columns and lines of tty, returns [0, 0] if no tty present.



106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
 
# File 'lib/hoodie/utils.rb', line 106

def terminal_dimensions
  [0, 0] unless  STDOUT.tty?
  [80, 40] if OS.windows?

  if ENV['COLUMNS'] && ENV['LINES']
    [ENV['COLUMNS'].to_i, ENV['LINES'].to_i]
  elsif ENV['TERM'] && command_in_path?('tput')
    [`tput cols`.to_i, `tput lines`.to_i]
  elsif command_in_path?('stty')
    `stty size`.scan(/\d+/).map {|s| s.to_i }
  else
    [0, 0]
  end
rescue
  [0, 0]
end

#twenty_four_hours_ago ⇒ Object 



86
87
88
 
# File 'lib/hoodie/utils.rb', line 86

def twenty_four_hours_ago
  Time.now - ( 60 * 60 * 24)
end

#underscore(camel_cased_word) ⇒ Object 



65
66
67
68
69
70
71
72
73
 
# File 'lib/hoodie/utils.rb', line 65

def underscore(camel_cased_word)
  word = camel_cased_word.to_s.dup
  word.gsub!(/::/, '/')
  word.gsub!(/([A-Z]+)([A-Z][a-z])/, '\1_\2')
  word.gsub!(/([a-z\d])([A-Z])/, '\1_\2')
  word.tr! '-', '_'
  word.downcase!
  word
end

#utc_httpdate ⇒ Date, Time

Return the date and time in “HTTP-date” format as defined by RFC 7231.

Returns:

  • (Date, Time) —

    in “HTTP-date” format



78
79
80
 
# File 'lib/hoodie/utils.rb', line 78

def utc_httpdate
  Time.now.utc.httpdate
end

#verify_options(accepted, actual) ⇒ Object 



90
91
92
93
94
95
96
97
98
 
# File 'lib/hoodie/utils.rb', line 90

def verify_options(accepted, actual) # @private
  return unless debug || $DEBUG
  unless (act=Set[*actual.keys]).subset?(acc=Set[*accepted])
    raise Croesus::Errors::UnknownOption,
      "\nDetected unknown option(s): #{(act - acc).to_a.inspect}\n" <<
      "Accepted options are: #{accepted.inspect}"
  end
  yield if block_given?
end