Session API

The Session API allows the operator to creates sessions and adds constraints and requirements.

add_constraint(name, value)

Add constraint requirement of the session.

Add constraint such as load, delay and hops constraints to the session requirements.

• Parameters

  • name (str) – Constraint name.

  • value (int** or **float) – Constraint value.

avoid_links(links)

Specify network links to avoid for the session.

• Parameters

  • links (list) – List of network links.

avoid_nodes(nodes)

Specify network nodes to avoid for the session.

• Parameters

  • nodes (list) – List of network nodes.

avoid_sessions(sessions)

Specify session to avoid for the session.

• Parameters

  • sessions (list) – List of network sessions.

mod_resource_req(srv_name, res_name, value)

Modify resource requirement of the session.

Add or update the resource consumption requirement of the session.

• Parameters

  • srv_name (str) – Network service function name.

  • res_name (str) – Resource name of the service function.

  • value (int) – The value of the the resource.

pass_through(nodes)

Specify network nodes requires to pass through for the session.

• Parameters

  • nodes (list) – List of network nodes.

print_constraints()

Print the constraints and requirements of the session.

traverse(services)

Specify the service chain requirement of the session.

• Parameters

  • services (list) – A order list of service function.