nl_tokens: Invoke the Sync Server .
pl_tokens: function invoke ( dataset_id , params , callback ) { debug ( 'invoke' ) ; if ( arguments . length < 3 ) throw new Error ( 'invoke requires 3 arguments' ) ; // Verify that fn param has been passed if ( ! params || ! params . fn ) { var <mask> = new Error ( 'no fn parameter provided in params "' + util . inspect ( params ) + '"' ) ; debugError ( '[%s] warn %s %j' , dataset_id , err , params ) ; return callback ( err , null ) ; } var fn = params . fn ; // Verify that fn param is valid if ( invokeFunctions . indexOf ( fn ) < 0 ) { return callback ( new Error ( 'invalid fn parameter provided in params "' + fn + '"' ) , null ) ; } // We can only continue if sync has connected to its dependencies i.e. mongo & redis if ( ! syncConnected ) { return callback ( new Error ( 'Sync not connected' ) ) ; } var fnHandler = module . exports [ fn ] || server [ fn ] || server . api [ fn ] ; server . api . start ( function ( ) { return fnHandler ( dataset_id , params , callback ) ; } ) ; }