<?php
/**
 * Class ProductFromCSV
 * Crea el producto
 * machine-name: product-from-csv
 */
class ProductFromCSV extends Migration {
  public function __construct($arguments) {
    parent::__construct($arguments);
    $csv_path = "/path/hasta/el/csv/exported.csv";
    $columns = array(
      0 => array('identificador', 'Identificador'),
      1 => array('titulo', 'Post date'),
      2 => array('precio', 'Precio'),
      3 => array('moneda', 'Moneda'),
      4 => array('categoria', 'Categoría'),
    );
    $this->source = new MigrateSourceCSV($csv_path, $columns, array('embedded_newlines' => TRUE, "track_changes" => TRUE));
    $this->destination = new MigrateDestinationEntityAPI('commerce_product', 'gorras');
    $this->map = new MigrateSQLMap($this->machineName,
      array(
        'identificador' => array(
          'type' => 'varchar',
          'length' => 20,
          'not null' => TRUE,
        ),
      ),
      $this->destination->getKeySchema()
    );
    global $user;
    $this->addFieldMapping('title', 'titulo');
    $this->addFieldMapping('commerce_price', 'precio')->defaultValue(0);
    $this->addFieldMapping('commerce_price:currency_code', 'moneda')->defaultValue(commerce_default_currency());
    $this->addFieldMapping('sku', 'identificador');
    $this->addFieldMapping('status')->defaultValue(1);
    $this->addFieldMapping('uid')->defaultValue($user->uid);
    $this->addFieldMapping('field_categoria', 'categoria')->defaultValue("General");
  }
}
/**
 * Class ProductDisplayFromCSV
 * Crea product displays (de momento solo pueden crear relaciones 1-1)
 * machine-name: product-display-from-csv
 */
class ProductDisplayFromCSV extends Migration {
  public function __construct($arguments) {
    parent::__construct($arguments);
    $csv_path = "/path/hasta/el/csv/exported.csv";
    //Suponiendo que la clase la has registrado bajo este nombre :D
    $product_machine_name = 'product-from-csv';
    $columns = array(
      0 => array('identificador', 'Identificador'),
      1 => array('titulo', 'Post date'),
    );
    $this->source = new MigrateSourceCSV($csv_path, $columns, array('embedded_newlines' => TRUE, "track_changes" => TRUE));
    $this->dependencies = array($product_machine_name);
    $this->destination = new MigrateDestinationNode('display_gorra');
    $this->map = new MigrateSQLMap($this->machineName,
      array(
        'identificador' => array(
          'type' => 'varchar',
          'length' => 20,
          'not null' => TRUE,
        ),
      ),
      $this->destination->getKeySchema()
    );
    global $user;
    $this->addFieldMapping('uid')->defaultValue($user->uid);
    $this->addFieldMapping('title', 'titulo');
    $this->addFieldMapping('field_product', "identificador")->sourceMigration($product_machine_name);
  }
}

<?php
class MigrationFromJSON extends Migration {
  public function __construct($arguments) {
    parent::__construct($arguments);
    $module_path = DRUPAL_ROOT . '/' . drupal_get_path('module', 'mimodulo');
    $json_file = $module_path . '/json/posts.json';
    $this->source = new MigrateSourceJSON($json_file, 'post_id', array(), array("track_changes" => TRUE));
    $this->destination = new MigrateDestinationNode('page');
    $this->map = new MigrateSQLMap($this->machineName,
      array(
        'post_id' => array(
          'type' => 'int',
          'unsigned' => TRUE,
          'not null' => TRUE,
        ),
      ),
      MigrateDestinationNode::getKeySchema()
    );
    $this->addFieldMapping('uid')->defaultValue(1);
    $this->addFieldMapping('title', 'title');
    $this->addFieldMapping('body', 'content');
    $this->addFieldMapping('created', 'createdDate');
  }
}

<?php
class MigrationFromJSON_API_Style extends Migration {
  public function __construct($arguments) {
    parent::__construct($arguments);
    $list_url = 'http://ecapy.com/Archivos/API-style/ids.json';
    $item_url = 'http://ecapy.com/Archivos/API-style/posts/:id.json';
    $this->source = new MigrateSourceList(
      new MigrateListJSON($list_url),
      new MigrateItemJSON($item_url, array()),
      array(),
      array("track_changes" => TRUE)
    );
    $this->destination = new MigrateDestinationNode('page');
    $this->map = new MigrateSQLMap($this->machineName,
      array(
        'id' => array(
          'type' => 'varchar',
          'length' => 20,
          'not null' => TRUE,
        ),
      ),
      MigrateDestinationNode::getKeySchema()
    );
    $this->addFieldMapping('uid')->defaultValue(1);
    $this->addFieldMapping('title', 'title');
    $this->addFieldMapping('body', 'content');
  }
}

<?php
$this->source = new MigrateSourceList(
      new MigrateListJSON($list_url),
      new MigrateItemJSON($item_url, array()),
      array(),
      array("track_changes" => TRUE)
    );

<?php
class WPMigrationFromCSV extends Migration {
  public function __construct($arguments) {
    parent::__construct($arguments);
    $module_path = DRUPAL_ROOT . '/' . drupal_get_path('module', 'mimodulo');
    $csv_path = $module_path . 'wp_posts-normal.csv';
    $columns = array(
      0 => array('id', 'Post ID'),
      2 => array('post_date', 'Post date'),
      4 => array('post_content', 'Post content'),
      5 => array('post_title', 'Post title'),
    );
    $this->source = new MigrateSourceCSV($csv_path, $columns, array('embedded_newlines' => TRUE));
    $this->destination = new MigrateDestinationNode('page');
    $this->map = new MigrateSQLMap($this->machineName,
      array(
        'id' => array(
          'type' => 'int',
          'unsigned' => TRUE,
          'not null' => TRUE,
        ),
      ),
      MigrateDestinationNode::getKeySchema()
    );
    $this->addFieldMapping('uid')->defaultValue(1);
    $this->addFieldMapping('created', 'post_date');
    $this->addFieldMapping('title', 'post_title');
    $this->addFieldMapping('body', 'post_content');
  }
}

<?php
class WPMigrationFromCSVconHeaders extends Migration {
  public function __construct($arguments) {
    parent::__construct($arguments);
    $module_path = DRUPAL_ROOT . '/' . drupal_get_path('module', 'mimodulo');
    $csv_path = $module_path . 'wp_posts-con-cabeceras.csv';
    $this->source = new MigrateSourceCSV($csv_path, array(), array('embedded_newlines' => TRUE, 'header_rows' => 1));
    $this->destination = new MigrateDestinationNode('page');
    $this->map = new MigrateSQLMap($this->machineName,
      array(
        'ID' => array(
          'type' => 'int',
          'unsigned' => TRUE,
          'not null' => TRUE,
        ),
      ),
      MigrateDestinationNode::getKeySchema()
    );
    $this->addFieldMapping('uid')->defaultValue(1);
    $this->addFieldMapping('created', 'post_date');
    $this->addFieldMapping('title', 'post_title');
    $this->addFieldMapping('body', 'post_content');
  }
}

<?php
class WPMigrationFromCSVdistintosDelimiters extends Migration {
  public function __construct($arguments) {
    parent::__construct($arguments);
    $module_path = DRUPAL_ROOT . '/' . drupal_get_path('module', 'mimodulo');
    $csv_path = $module_path . 'wp_posts-con-delimitadores.csv';
    $columns = array(
      0 => array('id', 'Post ID'),
      2 => array('post_date', 'Post date'),
      4 => array('post_content', 'Post content'),
      5 => array('post_title', 'Post title'),
    );
    $this->source = new MigrateSourceCSV($csv_path, $columns, array(
      'embedded_newlines' => TRUE,
      'length' => NULL,
      'delimiter' => ';',
      'enclosure' => "'",
      'escape' => '|',
    ));
    $this->destination = new MigrateDestinationNode('page');
    $this->map = new MigrateSQLMap($this->machineName,
      array(
        'id' => array(
          'type' => 'int',
          'unsigned' => TRUE,
          'not null' => TRUE,
        ),
      ),
      MigrateDestinationNode::getKeySchema()
    );
    $this->addFieldMapping('uid')->defaultValue(1);
    $this->addFieldMapping('created', 'post_date');
    $this->addFieldMapping('title', 'post_title');
    $this->addFieldMapping('body', 'post_content');
  }
}