rhumba: Add emulab support

Now the defined experiment can already be run on the Virtual Wall (1
and 2). The user has to create an EmulabTestbed object and fill it in
with the correct info. Next step would be adding jFed as a testbed so
that the user can choose which testbed software to use.

1 files changed, 182 insertions, 16 deletions

diff --git a/rhumba.py b/rhumba.py
index d94cd9e..792965b 100755
--- a/rhumba.py
+++ b/rhumba.py
@@ -1,26 +1,176 @@
 #
 # A library to manage ARCFIRE experiments
 #
+#    Sander Vrijders   <sander.vrijders@intec.ugent.be>
+#    Vincenzo Maffione <v.maffione@nextworks.it>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+# MA  02110-1301  USA
+
+import emulab_support as es
+import abc
+
+# Represents generic testbed info
+#
+# @username [string] user name
+# @password [string] password
+# @proj_name [string] project name
+# @exp_name [string] experiment name
+#
+class Testbed:
+    def __init__(self, username = "", password = "",
+                 proj_name = "", exp_name = ""):
+        self.username = username
+        self.password = password
+        self.proj_name = proj_name
+        self.exp_name = exp_name
+
+    @abc.abstractmethod
+    def create_experiment(self, nodes, links):
+        return
+
+    @abc.abstractmethod
+    def swap_exp_in(self):
+        return
+
+    @abc.abstractmethod
+    def wait_until_nodes_up(self):
+        return
+
+    @abc.abstractmethod
+    def complete_experiment_graph(self, nodes, links):
+        return
+
+    @abc.abstractmethod
+    def execute_command(self, hostname, command, time_out = 3):
+        return
+
+    @abc.abstractmethod
+    def copy_file_to_testbed(self, hostname, text, file_name):
+        return
+
+# Represents an emulab testbed info
+#
+# @url [string] URL of the testbed
+# @image [string] specific image to use
+#
+class EmulabTestbed:
+    def __init__(self, username = "", password = "",
+                 proj_name  = "ARCFIRE", exp_name = "",
+                 url = "wall1.ilabt.iminds.be",
+                 image = "UBUNTU14-64-STD"):
+        Testbed.__init__(self, username, password,
+                         proj_name, exp_name)
+        self.url = url
+        self.image = image
+
+    def create_experiment(self, nodes, links):
+        es.create_experiment(self, nodes, links)
+
+    def swap_exp_in(self):
+        es.swap_exp_in(self)
+
+    def wait_until_nodes_up(self):
+        es.wait_until_nodes_up(self)
+
+    def complete_experiment_graph(self, nodes, links):
+        es.complete_experiment_graph(self, nodes, links)
+
+    def execute_command(self, hostname, command, time_out = 3):
+        es.execute_command(self, hostname, command, time_out = 3)
+
+    def copy_file_to_testbed(self, hostname, text, file_name):
+        es.copy_file_to_testbed(self, hostname, text, file_name)
+
+# Represents an interface on a node
+#
+# @name [string] interface name
+# @ip [int] IP address of that interface
+#
+class Interface:
+    def __init__(self, name = "", ip = ""):
+        self.name = name
+        self.ip = ip
+
+# Represents a link in the physical graph
+#
+# @name [string] Link name
+#
+class Link:
+    def __init__(self, name):
+        self.name = name
+
+# Represents a point-to-point link in the physical graph
+#
+# @name [string] DIF name
+#
+class P2PLink(Link):
+    def __init__(self, name, node_a, node_b,
+                 int_a = Interface(),
+                 int_b = Interface()):
+        Link.__init__(self, name)
+        self.node_a = node_a
+        self.node_b = node_b
+        self.int_a = int_a
+        self.int_b = int_b
+
+def get_links(nodes):
+    difs = set()
+    links = list()
+    for node in nodes:
+        for dif in node.difs:
+            if type(dif) is ShimEthDIF:
+                difs.add(dif)
+
+    for dif in difs:
+        # Point-to-point link
+        if len(dif.members) == 2:
+            node_a = dif.members[0]
+            node_b = dif.members[1]
+            link = P2PLink(node_a.name + "-" + node_b.name,
+                           node_a, node_b)
+            links.append(link)
+
+    return links
 
 # Base class for DIFs
 #
 # @name [string] DIF name
 #
 class DIF:
-    def __init__(self, name):
+    def __init__(self, name, members = list()):
         self.name = name
+        self.members = members
 
     def __repr__(self):
         s = "DIF %s" % self.name
         return s
 
+    def add_member(self, node):
+        self.members.append(node)
+
+    def del_member(self, node):
+        self.members.remove(node)
+
 # Shim over Ethernet
 #
 # @link_speed [int] Speed of the Ethernet network, in Mbps
 #
 class ShimEthDIF(DIF):
-    def __init__(self, name, link_speed = 0):
-        DIF.__init__(self, name)
+    def __init__(self, name, members = list(), link_speed = 0):
+        DIF.__init__(self, name, members)
         self.link_speed = int(link_speed)
         if self.link_speed < 0:
             raise ValueError("link_speed must be a non-negative number")
@@ -30,8 +180,8 @@ class ShimEthDIF(DIF):
 # @policies [dict] Policies of the normal DIF
 #
 class NormalDIF(DIF):
-    def __init__(self, name, policies = dict()):
-        DIF.__init__(self, name)
+    def __init__(self, name, members = list(), policies = dict()):
+        DIF.__init__(self, name, members)
         self.policies = policies
 
     def add_policy(self, comp, pol):
@@ -54,12 +204,14 @@ class NormalDIF(DIF):
 # @bindings: Binding of names on the processing system
 #
 class Node:
-    def __init__(self, name, difs = set(),
+    def __init__(self, name, difs = list(),
                  dif_registrations = dict(),
                  registrations = dict(),
                  bindings = dict()):
         self.name = name
         self.difs = difs
+        for dif in difs:
+            dif.add_member(self)
         self.dif_registrations = dif_registrations
         self.registrations = registrations
         self.bindings = bindings
@@ -90,6 +242,14 @@ class Node:
         s += " ]\n"
         return s
 
+    def add_dif(self, dif):
+        self.difs.append(dif)
+        dif.add_member(self)
+
+    def del_dif(self, dif):
+        self.difs.remove(dif)
+        dif.del_member(self)
+
     def add_dif_registration(self, dif_a, dif_b):
         self.dif_registrations[dif_a].append(dif_b)
 
@@ -114,9 +274,10 @@ class Node:
 # @nodes: Nodes in the experiment
 #
 class Experiment:
-    def __init__(self, name, nodes = set()):
+    def __init__(self, name, testbed, nodes = list()):
         self.name = name
         self.nodes = nodes
+        self.testbed = testbed
 
     def __repr__(self):
         s = "%s:" % self.name
@@ -132,35 +293,40 @@ class Experiment:
         self.nodes.remove(node)
 
     def run(self):
-        print("[Experiment %s] start" % self.name)
-        print("[Experiment %s] end" % self.name)
-
+        self.links = get_links(self.nodes)
+        self.testbed.create_experiment(self.nodes, self.links)
+        self.testbed.swap_exp_in()
+        self.testbed.wait_until_nodes_up()
+        self.testbed.complete_experiment_graph(self.nodes, self.links)
 
 # An experiment over the IRATI implementation
 class IRATIExperiment(Experiment):
-    def __init__(self, name, nodes = set()):
-        Experiment.__init__(self, name, nodes)
+    def __init__(self, name, testbed, nodes = list()):
+        Experiment.__init__(self, name, testbed, nodes)
 
     def run(self):
         print("[IRATI experiment %s] start" % self.name)
+        Experiment.run(self)
         print("[IRATI experiment %s] end" % self.name)
 
 
 # An experiment over the RLITE implementation
 class RLITEExperiment(Experiment):
-    def __init__(self, name, nodes = set()):
-        Experiment.__init__(self, name, nodes)
+    def __init__(self, name, testbed, nodes = list()):
+        Experiment.__init__(self, name, testbed, nodes)
 
     def run(self):
         print("[RLITE experiment %s] start" % self.name)
+        Experiment.run(self)
         print("[RLITE experiment %s] end" % self.name)
 
 
 # An experiment over the Ouroboros implementation
 class OuroborosExperiment(Experiment):
-    def __init__(self, name, nodes = set()):
-        Experiment.__init__(self, name, nodes)
+    def __init__(self, name, testbed, nodes = list()):
+        Experiment.__init__(self, name, testbed, nodes)
 
     def run(self):
         print("[Ouroboros experiment %s] start" % self.name)
+        Experiment.run(self)
         print("[Ouroboros experiment %s] end" % self.name)