Class: CFRuntime::MongoClient

Inherits:
Object
  • Object
show all
Defined in:
lib/cf-runtime/mongodb.rb

Class Method Summary collapse

Class Method Details

.create(options = {}) ⇒ Object

Creates and returns a Mongo Connection to a single mongodb service. Passes optional Hash of non-connection-related options to Mongo::Connection.new. The connection is wrapped in a proxy that adds a no-argument db method to gain access to the database created by CloudFoundry without having to specify the name. Raises ArgumentError If zero or multiple mongodb services are found.



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# File 'lib/cf-runtime/mongodb.rb', line 11

def self.create(options={})
  service_names = CloudApp.service_names_of_type('mongodb')
  if service_names.length != 1
    raise ArgumentError.new("Expected 1 service of mongodb type, " +
      "but found #{service_names.length}.  " +
      "Consider using create_from_svc(service_name) instead.")
  end
  create_from_svc(service_names[0],options)
end

.create_from_svc(service_name, options = {}) ⇒ Object

Creates and returns a Mongo Connection to a mongodb service with the specified name. Passes optional Hash of non-connection-related options to Mongo::Connection.new. The connection is wrapped in a proxy that adds a no-argument db method to gain access to the database created by CloudFoundry without having to specify the name. Raises ArgumentError If specified mongodb service is not found.



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# File 'lib/cf-runtime/mongodb.rb', line 27

def self.create_from_svc(service_name,options={})
  service_props = CFRuntime::CloudApp.service_props(service_name)
  if service_props.nil?
    raise ArgumentError.new("Service with name #{service_name} not found")
  end
  uri = "mongodb://#{service_props[:username]}:#{service_props[:password]}@#{service_props[:host]}:#{service_props[:port]}/#{service_props[:db]}"
  conn = Mongo::Connection.from_uri(uri, options)
  MongoConnection.new(conn, service_props[:db])
end

.db_name ⇒ Object

Returns the db_name for a single mongodb service. Raises ArgumentError If zero or multiple mongodb services are found.



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# File 'lib/cf-runtime/mongodb.rb', line 39

def self.db_name()
  service_names = CloudApp.service_names_of_type('mongodb')
  if service_names.length != 1
    raise ArgumentError.new("Expected 1 service of mongodb type, " +
      "but found #{service_names.length}.  " +
      "Consider using db_name_from_svc(service_name) instead.")
  end
  db_name_from_svc(service_names[0])
end

.db_name_from_svc(service_name) ⇒ Object

Returns the db_name for the mongodb service with the specified name. Raises ArgumentError If specified mongodb service is not found.



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# File 'lib/cf-runtime/mongodb.rb', line 51

def self.db_name_from_svc(service_name)
  service_props = CFRuntime::CloudApp.service_props(service_name)
  if service_props.nil?
    raise ArgumentError.new("Service with name #{service_name} not found")
  end
  service_props[:db]
end