Class: UsefulDB::Settings

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

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.data ⇒ Object

Returns the value of attribute data.



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# File 'lib/usefuldb/settings.rb', line 9

def data
  @data
end

Class Method Details

.autoConvert(log) ⇒ Object

Converts from db versions < 0.0.6 to the structure introduced in version 0.0.7



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# File 'lib/usefuldb/settings.rb', line 52

def autoConvert(log)
  log.warn "autoConvert Method executing"
  convertedDB = {"version" => UsefulDB::Version.to_s, "db" => @data}
  
  convertedDB["db"].each do |element|
    element["description"] = "nil"
  end
  
  @data = convertedDB
end

.autoUpgrade(log) ⇒ Object

Convert the db from versions lower than the latest version of usefuldb to the latest version



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# File 'lib/usefuldb/settings.rb', line 65

def autoUpgrade(log)
  log.warn "autoUpgrade Method executing"
  @data["version"] = UsefulDB::Version.to_s
  resource_path = File.join(File.dirname(__FILE__), "../../resources/db.yaml")
  @resourceData = YAML.load(File.open(resource_path))
  
  log.warn "Updating local database with default entries"
  @data["db"] = (@data["db"] | @resourceData["db"]).uniq
end

.load(path, log) ⇒ Object

Loads the database from disk



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# File 'lib/usefuldb/settings.rb', line 12

def load(path, log)
  begin
    @data = YAML.load(File.open(path))
    
    if @data.class == Array
      log.warn "Assuming currently installed DB version < 0.0.7 running autoConvert"
      
      autoConvert(log)
      log.warn "Database conversion successful"
      save(@data, path, log)
      log.debug "Saving the database"
    elsif @data["version"] != UsefulDB::Version.to_s
      log.warn "The database version is lower than the latest version running autoUpgrade"
      
      autoUpgrade(log)
      log.warn "Database upgrade successful"
      save(@data, path, log)
      log.debug "Saving the database"
    else
      log.debug "Database version is current"
    end
    
    log.debug @data.inspect
    
  rescue ArgumentError => e
    exit("Could not parse YAML: #{e.message}")
  end  
end

.save(newData, path, log) ⇒ Object

Saves the database to disk



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# File 'lib/usefuldb/settings.rb', line 43

def save(newData, path, log)
  @data = newData
  f = File.open(path, "w")
  f.write(@data.to_yaml)
  f.close
end