start-routers.sh

#!/bin/bash

[ -f Vagrantfile ] || ( echo "Vagrantfile not found, aborting" ; exit 1 )

trap "rm -f /tmp/sshconfig-r?.$$" EXIT

TESTBED=testbed.yaml

###############
# Bring up the VMs
function start_vms() {
    for NUM in $* ; do
        vagrant up r$NUM || exit 1
    done
}

###############
# we need some initial config to make robot happy (minimum hostname)
# while at it, also setting up connectivity on the crosslinks between the
# devices
function config_routers() {
    for NUM in $* ; do
        echo "Setting up r$NUM"
        cat << _EOF | vagrant ssh r$NUM
conf term
hostname r$NUM
ipv6 unicast-routing
no ip domain-lookup
default interface Loopback0
interface loopback0
 ip address 10.0.0.$NUM 255.255.255.255
 ipv6 address fd00:0:0:0::$NUM/128
 ip ospf 1 area 0
 ipv6 ospf 1 area 0
default interface GigabitEthernet2
interface GigabitEthernet2
 no shut
 ip address 172.16.0.$NUM 255.255.255.0
 ipv6 address fd00:a:a:a:2::$NUM/64
 ip ospf 1 area 0
 ipv6 ospf 1 area 0
end
write
exit
_EOF

    done
}

###############
# Creating testbed.yaml, extracting port and identifyfile 
# created by vagrant
#
function create_testbed() {
    # find out which routers are running
    set -- $(vagrant status | sed -n 's/^r\([12]\).*running.*/\1/p')
    if [ $# -eq 0 ]; then
        echo "No routes are running, returning"
    fi
    echo "Setting up $TESTBED"
    echo "# this file was auto-generated by $0, manual edits might get lost if the script is re-executed" > $TESTBED
    echo "devices:" > $TESTBED
    for NUM in $* ; do
        r=r$NUM
        tmpfile=/tmp/sshconfig-${r}.$$
        vagrant ssh-config $r > $tmpfile
        port=$(sed -n 's/^ *Port  *\(.*\) *$/\1/p' $tmpfile)
        identity=$(sed -n 's/ *IdentityFile  *\(.*\) *$/\1/p' $tmpfile)
        if [ $(uname) == Darwin ] ; then
            # while developing on mac
            address=host.docker.internal
        else
            address=127.0.0.1
        fi
        # in case we develop in a different directory
        identity=$(echo $identity | sed "s#$HOME#/home/devnet#")
        echo "$r, $address:$port, IdentityFile $identity"
        cat << _EOF >> $TESTBED
  $r:
    type: router
    os: ios
    custom:
      abstraction:
        order: [os]
      categories:
      - ios
    credentials:
      default:
        username: vagrant
        password: using-key
    connections:
      defaults:
        class: unicon.Unicon
      cli:
        protocol: ssh
        ip: $address
        port: $port
        ssh_options: -o IdentityFile=$identity -o StrictHostKeyChecking=no

_EOF

done 
}

##### MAIN

start_vms 1 2
config_routers 1 2
create_testbed

###########
# bring up the docker-compose cluster

echo "starting cxta container"
export WORKDIR=$(pwd)
docker-compose up -d
# run a robot test which connects to the VMs and checks connectivity
docker exec -it cxta_devnet robot -d /tmp test-vms.robot