Module: EM::Mongo::Support

Extended by:
Support
Includes:
Conversions
Included in:
Support
Defined in:
lib/em-mongo/support.rb

Constant Summary

Constants included from Conversions

Conversions::ASCENDING_CONVERSION, Conversions::DESCENDING_CONVERSION

Instance Method Summary collapse

Methods included from Conversions

#array_as_sort_parameters, #sort_value, #string_as_sort_parameters

Instance Method Details

#auth_key(username, password, nonce) ⇒ String

Generate an MD5 for authentication.

Parameters:

Returns:

  • (String)

    a key for db authentication.


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# File 'lib/em-mongo/support.rb', line 33

def auth_key(username, password, nonce)
  Digest::MD5.hexdigest("#{nonce}#{username}#{hash_password(username, password)}")
end

#format_order_clause(order) ⇒ Object


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# File 'lib/em-mongo/support.rb', line 62

def format_order_clause(order)
  case order
    when String, Symbol then string_as_sort_parameters(order)
    when Array then array_as_sort_parameters(order)
    else
      raise InvalidSortValueError, "Illegal sort clause, '#{order.class.name}'; must be of the form " +
        "[['field1', '(ascending|descending)'], ['field2', '(ascending|descending)']]"
  end
end

#hash_password(username, plaintext) ⇒ String

Return a hashed password for auth.

Parameters:

Returns:


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# File 'lib/em-mongo/support.rb', line 43

def hash_password(username, plaintext)
  Digest::MD5.hexdigest("#{username}:mongo:#{plaintext}")
end

#ok?(doc) ⇒ Boolean

Determine if a database command has succeeded by checking the document response.

Parameters:

Returns:

  • (Boolean)

    true if the 'ok' key is either 1 or true.


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# File 'lib/em-mongo/support.rb', line 78

def ok?(doc)
  doc['ok'] == 1.0 || doc['ok'] == true
end

#validate_db_name(db_name) ⇒ Object


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# File 'lib/em-mongo/support.rb', line 48

def validate_db_name(db_name)
  unless [String, Symbol].include?(db_name.class)
    raise TypeError, "db_name must be a string or symbol"
  end

  [" ", ".", "$", "/", "\\"].each do |invalid_char|
    if db_name.include? invalid_char
      raise EM::Mongo::InvalidNSName, "database names cannot contain the character '#{invalid_char}'"
    end
  end
  raise EM::Mongo::InvalidNSName, "database name cannot be the empty string" if db_name.empty?
  db_name
end