python examples, removed params common local module to avoid confusion, clean things up a bit and added a module doc to help explain the file

daemon/examples/python/switch.py

@@ -1,13 +1,18 @@
-import logging
-import time
+"""
+This is a standalone script to run a small switch based scenario and will not
+interact with the GUI.
+"""
+
+import logging
 
-import params
 from core.emulator.coreemu import CoreEmu
 from core.emulator.emudata import IpPrefixes
 from core.emulator.enumerations import EventTypes, NodeTypes
 
+NODES = 2
 
-def example(args):
+
+def main():
     # ip generator for example
     prefixes = IpPrefixes(ip4_prefix="10.83.0.0/16")
 
@@ -19,10 +24,10 @@ def example(args):
     session.set_state(EventTypes.CONFIGURATION_STATE)
 
     # create switch network node
-    switch = session.add_node(_type=NodeTypes.SWITCH)
+    switch = session.add_node(_type=NodeTypes.SWITCH, _id=100)
 
     # create nodes
-    for _ in range(args.nodes):
+    for _ in range(NODES):
         node = session.add_node()
         interface = prefixes.create_interface(node)
         session.add_link(node.id, switch.id, interface_one=interface)
@@ -31,27 +36,17 @@ def example(args):
     session.instantiate()
 
     # get nodes to run example
-    first_node = session.get_node(2)
-    last_node = session.get_node(args.nodes + 1)
-    first_node_address = prefixes.ip4_address(first_node)
-    logging.info("node %s pinging %s", last_node.name, first_node_address)
-    output = last_node.cmd(f"ping -c {args.count} {first_node_address}")
+    first_node = session.get_node(1)
+    last_node = session.get_node(NODES)
+    address = prefixes.ip4_address(first_node)
+    logging.info("node %s pinging %s", last_node.name, address)
+    output = last_node.cmd(f"ping -c 3 {address}")
     logging.info(output)
 
     # shutdown session
     coreemu.shutdown()
 
 
-def main():
-    logging.basicConfig(level=logging.INFO)
-    args = params.parse("switch")
-    start = time.perf_counter()
-    logging.info(
-        "running switch example: nodes(%s) ping count(%s)", args.nodes, args.count
-    )
-    example(args)
-    logging.info("elapsed time: %s", time.perf_counter() - start)
-
-
 if __name__ == "__main__":
+    logging.basicConfig(level=logging.INFO)
     main()