new_contents: """drop workers table
  
  Revision ID: 519b66176c0c
  Revises: 379d301c24ed
  Create Date: 2014-04-10 15:53:05.866376
  
  """
  
  # revision identifiers, used by Alembic.
  revision = '519b66176c0c'
  down_revision = '379d301c24ed'
  
  from alembic import op
  import sqlalchemy as sa
  
  
  def upgrade():
      op.drop_constraint('uk_uuid', 'workers', type_='unique')
      op.drop_index('idx_last_ping', 'workers')
      op.drop_table('workers')
  
  
  def downgrade():
      op.create_table(
          'workers',
          sa.Column('id', sa.Integer, primary_key=True),
          sa.Column('uuid', sa.String(36), nullable=False),
          sa.Column('last_ping', sa.DateTime, nullable=False),
          sa.Column('current_url', sa.Text, nullable=True)
      )
  
      op.create_unique_constraint('uk_uuid', 'workers', ['uuid'])
      op.create_index('idx_last_ping', 'workers', ['last_ping'])
  
subject: Drop workers table