removed session manager, since CoreEmu does this now, set future examples to serve as API examples, removed netns examples that are replaced by these API variations

daemon/examples/api/wlan.py

@@ -0,0 +1,71 @@
+#!/usr/bin/python
+#
+# run iperf to measure the effective throughput between two nodes when
+# n nodes are connected to a virtual wlan; run test for testsec
+# and repeat for minnodes <= n <= maxnodes with a step size of
+# nodestep
+
+import datetime
+
+import parser
+from core.enumerations import NodeTypes, EventTypes
+from core.future.coreemu import CoreEmu
+from core.future.futuredata import IpPrefixes
+from core.mobility import BasicRangeModel
+
+
+def example(options):
+    # ip generator for example
+    prefixes = IpPrefixes("10.83.0.0/16")
+
+    # create emulator instance for creating sessions and utility methods
+    coreemu = CoreEmu()
+    session = coreemu.create_session()
+
+    # must be in configuration state for nodes to start, when using "node_add" below
+    session.set_state(EventTypes.CONFIGURATION_STATE)
+
+    # create wlan network node
+    wlan = session.add_node(_type=NodeTypes.WIRELESS_LAN)
+    session.set_wireless_model(wlan, BasicRangeModel)
+
+    # create nodes
+    wireless_nodes = []
+    for _ in xrange(options.nodes):
+        node = session.add_node()
+        interface = prefixes.create_interface(node)
+        session.add_link(node.objid, wlan.objid, interface_one=interface)
+        wireless_nodes.append(node)
+
+    # link all created nodes with the wireless network
+    session.wireless_link_all(wlan, wireless_nodes)
+
+    # instantiate session
+    session.instantiate()
+
+    # get nodes for example run
+    first_node = session.get_object(2)
+    last_node = session.get_object(options.nodes + 1)
+
+    print "starting iperf server on node: %s" % first_node.name
+    first_node.cmd(["iperf", "-s", "-D"])
+    address = prefixes.ip4_address(first_node)
+    print "node %s connecting to %s" % (last_node.name, address)
+    last_node.client.icmd(["iperf", "-t", str(options.time), "-c", address])
+    first_node.cmd(["killall", "-9", "iperf"])
+
+    # shutdown session
+    coreemu.shutdown()
+
+
+def main():
+    options = parser.parse_options("wlan")
+
+    start = datetime.datetime.now()
+    print "running wlan example: nodes(%s) time(%s)" % (options.nodes, options.time)
+    example(options)
+    print "elapsed time: %s" % (datetime.datetime.now() - start)
+
+
+if __name__ == "__main__":
+    main()