text: #    Licensed under the Apache License, Version 2.0 (the "License"); you may
  #    not use this file except in compliance with the License. You may obtain
  #    a copy of the License at
  #
  #         http://www.apache.org/licenses/LICENSE-2.0
  #
  #    Unless required by applicable law or agreed to in writing, software
  #    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  #    License for the specific language governing permissions and limitations
  #    under the License.
  
  """increase-node-name-length
  
  Revision ID: 2fb93ffd2af1
  Revises: 4f399b21ae71
  Create Date: 2015-03-18 17:08:11.470791
  
  """
  
  from alembic import op
  import sqlalchemy as sa
  from sqlalchemy.dialects import mysql
  
  # revision identifiers, used by Alembic.
  revision = '2fb93ffd2af1'
  down_revision = '4f399b21ae71'
  
  
  def upgrade():
      op.alter_column('nodes', 'name',
                      existing_type=mysql.VARCHAR(length=63),
                      type_=sa.String(length=255),
                      existing_nullable=True)
  