install: updates to support building deb/rpm packages that contain python wheels and install core from a single file, updates to core to install scripts by way of python directly

package/examples/grpc/distributed_switch.py

@@ -0,0 +1,64 @@
+import argparse
+import logging
+
+from core.api.grpc import client
+from core.api.grpc.wrappers import NodeType, Position, Server
+
+
+def log_event(event):
+    logging.info("event: %s", event)
+
+
+def main(args):
+    # helper to create interfaces
+    interface_helper = client.InterfaceHelper(ip4_prefix="10.83.0.0/16")
+
+    # create grpc client and connect
+    core = client.CoreGrpcClient()
+    core.connect()
+
+    # create session
+    session = core.create_session()
+
+    # add distributed server
+    server = Server(name="core2", host=args.server)
+    session.servers.append(server)
+
+    # handle events session may broadcast
+    core.events(session.id, log_event)
+
+    # create switch node
+    position = Position(x=150, y=100)
+    switch = session.add_node(1, _type=NodeType.SWITCH, position=position)
+    position = Position(x=100, y=50)
+    node1 = session.add_node(2, position=position)
+    position = Position(x=200, y=50)
+    node2 = session.add_node(3, position=position, server=server.name)
+
+    # create links
+    iface1 = interface_helper.create_iface(node1.id, 0)
+    session.add_link(node1=node1, node2=switch, iface1=iface1)
+    iface1 = interface_helper.create_iface(node2.id, 0)
+    session.add_link(node1=node2, node2=switch, iface1=iface1)
+
+    # start session
+    core.start_session(session)
+
+
+if __name__ == "__main__":
+    logging.basicConfig(level=logging.DEBUG)
+    parser = argparse.ArgumentParser(description="Run distributed_switch example")
+    parser.add_argument(
+        "-a",
+        "--address",
+        required=True,
+        help="local address that distributed servers will use for gre tunneling",
+    )
+    parser.add_argument(
+        "-s",
+        "--server",
+        required=True,
+        help="distributed server to use for creating nodes",
+    )
+    args = parser.parse_args()
+    main(args)