polardbxengine/storage/ndb/nodejs/perftest/jscrund_null.js

/*
 Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved.
 
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License, version 2.0,
 as published by the Free Software Foundation.

 This program is also distributed with certain software (including
 but not limited to OpenSSL) that is licensed under separate terms,
 as designated in a particular file or component or in included license
 documentation.  The authors of MySQL hereby grant you an additional
 permission to link the program and your derivative works with the
 separately licensed software that they have included with MySQL.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License, version 2.0, for more details.

 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
 */

'use strict';

var jones          = require("database-jones"),
    ndb_bin_path   = require("jones-ndb").config.binary,
    ndb_adapter    = require(ndb_bin_path),
    os             = require('os'),
    udebug         = unified_debug.getLogger('jscrund_null.js');

function implementation() {
  var b = new Buffer(4);
  this.inBatchMode   = false;
  this.batch         = null;
  this.buffers       = null;
  this.properties    = null;
  this.debug_msg     = "debug message ";
  this.bounds_helper = [ b,1,true,b,1,false,0 ]; // Index Bounds Helper Spec
};

implementation.prototype = {
};

implementation.prototype.getConnectionProperties = function() {
  return {
    mysql_user           : "root",  // For CREATE TABLE
    database             : "test",
    debug_messages       : 0,       // log_debug messages per operation
    debug_message_length : 20,      // length of debug messages
    ndbapi_calls         : 0,       // NDB API calls per operation
    system_calls         : 0,       // System calls per operation
    new_buffers          : 0,       // Allocate node Buffers per operation
    new_buffer_size      : 32,      // Size of allocation
  };
};

implementation.prototype.close = function(callback) {
  callback(null);
};

implementation.prototype.initialize = function(options, callback) {
  var n;
  jones.getDBServiceProvider("ndb");   // To call ndb_init()
  this.properties = options.properties;
  while(this.debug_msg.length < this.properties.debug_message_length) {
    this.debug_msg += "x";
  }
  callback(null);
};

implementation.prototype.execOneOperation = function(callback, value) {
  var b, n;

  /* Debug Messages */
  for(n = 0 ; n < this.properties.debug_messages ; n++) {
    udebug.log(this.debug_msg);
  }

  /* NDBAPI calls */
  /* Marshal/Unmarshal arguments and call into native code */
  for(n = 0 ; n < this.properties.ndbapi_calls ; n++) {
    ndb_adapter.impl.IndexBound.create(this.bounds_helper);
  }

  /* System calls */
  for(n = 0 ; n < this.properties.system_calls ; n++) {
    os.loadavg();          // calls sysctl() or sysinfo()
  }

  /* Buffers */
  for(n = 0 ; n < this.properties.new_buffers ; n++) {
    b = new Buffer(this.properties.new_buffer_size);
    if(this.inBatchMode) {
      this.buffers.push(b);
    }
  }

  /* Run operation or add it to batch */
  if(this.inBatchMode) {
    this.batch.push({ 'cb': callback, 'val': value });
  }
  else {
    setImmediate(callback, null, value);
  }
};

implementation.prototype.persist = function(parameters, callback) {
  this.execOneOperation(callback);
};

implementation.prototype.find = function(parameters, callback) {
  var object = {
    id :      parameters.key.id,
    cint:     parameters.key.id,
    clong:    parameters.key.id,
    cfloat:   parameters.key.id,
    cdouble:  parameters.key.id
  }
  this.execOneOperation(callback, object);
};

implementation.prototype.remove = function(parameters, callback) {
  this.execOneOperation(callback);
};

implementation.prototype.createBatch = function(callback) {
  this.batch = [];
  this.buffers = [];
  this.inBatchMode = true;
  callback(null);
};

implementation.prototype.executeBatch = function(callback) {
  var batch = this.batch;

  function runOperations() {
    var item;
    while((item = batch.pop())) {
      item.cb(null, item.val);
    }
    callback(null);
  }

  this.inBatchMode = false;
  setImmediate(runOperations);
};

implementation.prototype.begin = function(callback) {
  callback(null);
};

implementation.prototype.commit = function(callback) {
  callback(null);
};

exports.implementation = implementation;