plv8_console.js

// Handy plv8 console object (debugging)
var console = (function(){
    var columns = 100;
    function logString(level, str) {
        var chunk = str.substring(0, columns);
        var overflow = str.substring(columns);
        plv8.elog(level, chunk);
        if (overflow.length) logString(level, " | "+overflow);
    };

    function log(level) {
        var args = [].slice.call(arguments, 1)
        return logString(
            level
            , "-> "+args.map(function(input){
                return typeof input == "object" ? JSON.stringify(input) : String(input);
            }).join("   ")
        );

    };

    function logger(level){
        return function(){return log.apply(this, [level].concat([].slice.call(arguments)));};
    };

    // Valid levels: DEBUG5, DEBUG4, DEBUG3, DEBUG2, DEBUG1, LOG, INFO, NOTICE, WARNING, ERROR
    return {
        log: logger(NOTICE),
        warning: logger(WARNING),
        error: logger(ERROR),
    };

})();

// Comment out below line to use it inside plv8_startup procedure making it available to
// all plv8 procedures having acces to its schema:
// this.console = console;

// For more details, see also:
//   * http://pgxn.org/dist/plv8/doc/plv8.html#Start-up.procedure
//   * https://gist.github.com/bitifet/bb02bb0aae4d7cab2c1d#file-perschema_plv8_init-js-sql