def get_table_info(master, connect, args):
if len(args) != 1:
raise IncorrectMessageError()
table_name = args[0]
table_info = master.get_table_info(table_name)
if table_info is None:
raise ServerError('Requested table does not exist')
connect.send_once(str(table_info))
def list_dir(master, connect, args):
if len(args) != 1:
raise IncorrectMessageError()
cluster_path = args[0]
cluster_info = master.get_cluster_info(cluster_path)
if not cluster_info:
raise ServerError('Cluster not found')
connect.send_once(line_packing(*cluster_info))
def map_request(master, connect, args):
if len(args) != 2:
raise IncorrectMessageError()
table_in, table_out = args
map_info = mapper.create_map(table_in, table_out)
table_nodes = master.get_table_nodes(table_in)
table_nodes = map(lambda node: node.url, table_nodes)
connect.send_once(line_packing(map_info.id, *table_nodes))
def add_table(master, connect, args):
if len(args) < 2:
raise IncorrectMessageError()
node = master.get_node((args[0], args[1]))
if node is None:
raise ServerError('Requested node does not exist')
new_table_args = args[2:] + [node]
master.add_table_node(*new_table_args)
def delete_table_request(master, connect, args):
if len(args) != 1:
raise IncorrectMessageError()
table_path = args[0]
table_info = master.get_table_info(table_path)
if table_info is None:
raise ServerError('Requested table does not exist')
table_nodes = table_info.nodes
nodes_addr = map(lambda node: node.url, table_nodes)
connect.send_once(line_packing(*nodes_addr))
def remove_node_table(master, connect, args):
if len(args) < 2:
raise IncorrectMessageError()
node = master.get_node((args[0], args[1]))
remove_table_args = args[2:] + [node]
master.remove_table_node(*remove_table_args)
def add_slave(master, connect, args):
if len(args) != 3:
raise IncorrectMessageError()
master.add_node(*args)