Project: Trema-testbed

Publisher: y-higuchi

"show_topology" example

show_topology is a simple usage example of topology C API.
show-topology.rb is a simple usage example of topology Ruby API.

show_topology command will query for all the link information that
the topology manager hold and print them in trema network DSL style.

Topology manager's link discovery feature must be enabled prior to running
show_topology command in order to obtain non-empty result.

Topology manager's link discovery feature can be enabled
by specifing "--always_run_discovery" option when starting topology daemon,
or by calling enable_topology_discovery() API from client application.

Background

Given: I cd to "../../src/examples/topology/"

Scenarios

[C API] Show discovered link topology. (Manually start topology manager)
[C API] Show discovered link topology. (Enable link discovery by API)
[Ruby API] Show discovered link topology. (Manually start topology manager)

@slow_process [C API] Show discovered link topology. (Manually start topology manager)

Given

I compile "show_topology.c" into "show_topology"

Given

I compile "enable_discovery.c" into "enable_discovery"

Given

a file named "show_topology.conf" with:

vswitch("topology1") { datapath_id "0x1" }
vswitch("topology2") { datapath_id "0x2" }
vswitch("topology3") { datapath_id "0x3" }
vswitch("topology4") { datapath_id "0x4" }

link "topology1", "topology2"
link "topology1", "topology3"
link "topology1", "topology4"
link "topology2", "topology3"
link "topology2", "topology4"
link "topology3", "topology4"

And

I successfully run trema run ../repeater_hub/repeater-hub.rb -c show_topology.conf -d

And

I successfully run trema run "../../../objects/topology/topology -d --always_run_discovery"

And

*** sleep 4 ***

When

I successfully run trema run ./show_topology

Then

the output should contain:

vswitch {
  datapath_id "0x2"
}

And

the output should contain:

vswitch {
  datapath_id "0x3"
}

And

the output should contain:

vswitch {
  datapath_id "0x1"
}

And

the output should contain:

vswitch {
  datapath_id "0x4"
}

And

the output should contain:

link "0x2", "0x1"

And

the output should contain:

link "0x3", "0x2"

And

the output should contain:

link "0x3", "0x1"

And

the output should contain:

link "0x4", "0x2"

And

the output should contain:

link "0x4", "0x3"

And

the output should contain:

link "0x4", "0x1"

@slow_process [C API] Show discovered link topology. (Enable link discovery by API)

Given

I compile "show_topology.c" into "show_topology"

Given

I compile "enable_discovery.c" into "enable_discovery"

Given

a file named "show_topology.conf" with:

vswitch("topology1") { datapath_id "0x1" }
vswitch("topology2") { datapath_id "0x2" }
vswitch("topology3") { datapath_id "0x3" }
vswitch("topology4") { datapath_id "0x4" }

link "topology1", "topology2"
link "topology1", "topology3"
link "topology1", "topology4"
link "topology2", "topology3"
link "topology2", "topology4"
link "topology3", "topology4"

And

I successfully run trema run ../repeater_hub/repeater-hub.rb -c show_topology.conf -d

And

I successfully run trema run "./enable_discovery"

And

*** sleep 4 ***

When

I successfully run trema run ./show_topology

Then

the output should contain:

vswitch {
  datapath_id "0x2"
}

And

the output should contain:

vswitch {
  datapath_id "0x3"
}

And

the output should contain:

vswitch {
  datapath_id "0x1"
}

And

the output should contain:

vswitch {
  datapath_id "0x4"
}

And

the output should contain:

link "0x2", "0x1"

And

the output should contain:

link "0x3", "0x2"

And

the output should contain:

link "0x3", "0x1"

And

the output should contain:

link "0x4", "0x2"

And

the output should contain:

link "0x4", "0x3"

And

the output should contain:

link "0x4", "0x1"

@slow_process [Ruby API] Show discovered link topology. (Manually start topology manager)

Given

a file named "show_topology.conf" with:

vswitch("topology1") { datapath_id "0x1" }
vswitch("topology2") { datapath_id "0x2" }
vswitch("topology3") { datapath_id "0x3" }
vswitch("topology4") { datapath_id "0x4" }

link "topology1", "topology2"
link "topology1", "topology3"
link "topology1", "topology4"
link "topology2", "topology3"
link "topology2", "topology4"
link "topology3", "topology4"

And

I successfully run trema run ../repeater_hub/repeater-hub.rb -c show_topology.conf -d

And

I successfully run trema run "../../../objects/topology/topology -d --always_run_discovery"

And

*** sleep 4 ***

When

I successfully run trema run ./show-topology.rb

Then

the output should contain:

vswitch {
  datapath_id "0x2"
}

And

the output should contain:

vswitch {
  datapath_id "0x3"
}

And

the output should contain:

vswitch {
  datapath_id "0x1"
}

And

the output should contain:

vswitch {
  datapath_id "0x4"
}

And

the output should contain:

link "0x2", "0x1"

And

the output should contain:

link "0x3", "0x2"

And

the output should contain:

link "0x3", "0x1"

And

the output should contain:

link "0x4", "0x2"

And

the output should contain:

link "0x4", "0x3"

And

the output should contain:

link "0x4", "0x1"

Last published over 7 years ago by y-higuchi.

"show_topology" example

Trema-testbed settings