Implement quagga peering

- Create an openstack instance
- Assign it a floating IP
- Execute a quagga bootstrap script using cloud init
- Tell ODL to peer with the instance
- Start an instance in a VPN
- make sure the route was exchanged between the peered quagga and ODL

Change-Id: I73bcaec5425df2b953c2bceaca7d4f09ff28f3d0
Signed-off-by: Romanos Skiadas <rski@intracom-telecom.com>

1 files changed, 76 insertions, 0 deletions

diff --git a/sdnvpn/lib/quagga.py b/sdnvpn/lib/quagga.py
new file mode 100644
index 0000000..e2885c2
--- /dev/null
+++ b/sdnvpn/lib/quagga.py
@@ -0,0 +1,76 @@
+"""Utilities for setting up quagga peering"""
+
+import re
+import time
+
+import functest.utils.functest_logger as ft_logger
+import functest.utils.functest_utils as ft_utils
+import sdnvpn.lib.config as config
+from sdnvpn.lib.utils import run_odl_cmd, exec_cmd
+
+logger = ft_logger.Logger("sdnvpn-quagga").getLogger()
+
+COMMON_CONFIG = config.CommonConfig()
+
+
+def odl_add_neighbor(neighbor_ip, controller):
+    command = 'configure-bgp -op add-neighbor --as-num 200'
+    command += ' --ip %s --use-source-ip %s' % (neighbor_ip, controller.ip)
+    success = run_odl_cmd(controller, command)
+    return success
+
+
+def bootstrap_quagga(fip_addr, controller_ip):
+    script = gen_quagga_setup_script(
+        controller_ip,
+        fip_addr)
+    cmd = "sshpass -popnfv ssh opnfv@%s << EOF %s EOF" % (fip_addr, script)
+    rc = ft_utils.execute_command(cmd)
+    return rc == 0
+
+
+def gen_quagga_setup_script(controller_ip, instance_floating_ip):
+    with open(COMMON_CONFIG.quagga_setup_script_path) as f:
+        template = f.read()
+    script = template % (controller_ip, instance_floating_ip)
+    return script
+
+
+def check_for_peering(controller):
+    cmd = 'show-bgp --cmd "ip bgp neighbors"'
+    tries = 20
+    neighbors = None
+    bgp_state_regex = re.compile("(BGP state =.*)")
+    opens_regex = re.compile("Opens:(.*)")
+    while tries > 0:
+        if neighbors and 'Established' in neighbors:
+            break
+        neighbors = run_odl_cmd(controller, cmd)
+        logger.info("Output of %s: %s", cmd, neighbors)
+        if neighbors:
+            opens = opens_regex.search(neighbors)
+            if opens:
+                logger.info("Opens sent/received: %s", opens.group(1))
+            state = bgp_state_regex.search(neighbors)
+            if state:
+                logger.info("Peering state: %s", state.group(1))
+        tries -= 1
+        time.sleep(1)
+
+    if not neighbors or 'Established' not in neighbors:
+        logger.error("Quagga failed to peer with OpenDaylight")
+        logger.error("OpenDaylight status: %s", neighbors)
+        return False
+
+    logger.info("Quagga peered with OpenDaylight")
+    return True
+
+
+def check_for_route_exchange(ip):
+    """Check that Quagga has learned the route to an IP"""
+    logger.debug("Checking that '%s' is in the Zebra routing table", ip)
+    routes, success = exec_cmd("vtysh -c 'show ip route'", verbose=True)
+    if not success:
+        return False
+    logger.debug("Zebra routing table: %s", routes)
+    return ip in routes