Class: ScriptLogger

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

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, args) ⇒ ScriptLogger 



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# File 'lib/script_logger.rb', line 11

def initialize(name, args)
  @log_name = name
  @obj_headers = []
  @target_obj_attributes = {}

  args.each do |obj_name,obj_attrs|
    next if obj_name == :extra_headers

    @target_obj_attributes[obj_name] = []
    obj_attrs.each do |column_info|
      target_attr = column_info.is_a?(Hash) ? column_info.keys.first : column_info
      @target_obj_attributes[obj_name] << target_attr
    end

    obj_attrs.each do |column_info|
      column_name = column_info.is_a?(Hash) ? column_info.values.first : "#{obj_name}_#{column_info}"
      @obj_headers << column_name
    end
  end

  @extra_headers = args.fetch(:extra_headers,[])
  @entries       = [] << CSV.generate_line(@obj_headers + @extra_headers).chomp
end

Instance Attribute Details

#entries ⇒ Object

Returns the value of attribute entries.



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# File 'lib/script_logger.rb', line 9

def entries
  @entries
end

#extra_headers ⇒ Object (readonly)

Returns the value of attribute extra_headers.



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# File 'lib/script_logger.rb', line 8

def extra_headers
  @extra_headers
end

#log_name ⇒ Object (readonly)

Returns the value of attribute log_name.



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# File 'lib/script_logger.rb', line 8

def log_name
  @log_name
end

#target_obj_attributes ⇒ Object (readonly)

Returns the value of attribute target_obj_attributes.



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# File 'lib/script_logger.rb', line 8

def target_obj_attributes
  @target_obj_attributes
end

Class Method Details

.all_logs_formatted ⇒ Object 



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# File 'lib/script_logger.rb', line 59

def self.all_logs_formatted
  output = ObjectSpace.each_object(self).inject("") do |all_logs,log|
    all_logs += "#{log}\n\n"
  end

  "\n\#{output}\n"
end

Instance Method Details

#entry_count ⇒ Object 



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# File 'lib/script_logger.rb', line 46

def entry_count
  entries.count - 1
end

#log(entry) ⇒ Object 



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# File 'lib/script_logger.rb', line 35

def log(entry)
  entry_build = []
  entry.each do |col_key,col_val|
    if obj_attrs = target_obj_attributes[col_key]
      entry_build += obj_attrs.map {|obj_attr| col_val.send(obj_attr) }
    end
  end
  entry_build += extra_headers.map {|column| entry.fetch(column, nil)}
  entries << CSV.generate_line(entry_build).chomp
end

#to_s ⇒ Object 



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# File 'lib/script_logger.rb', line 50

def to_s
  output = entries.inject("") { |r,entry| r += "#{entry}\n" }
  log_title = "#{log_name} -- #{entry_count} records"
  "\#{log_title.center(40,'-')}\n\#{output}\n"
end