# Copyright 2021 Max Planck Institute for Software Systems, and
# National University of Singapore
#
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# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
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"""Experiment, which simulates two hosts, one running a netperf server and the
other a client with the goal of measuring latency and throughput between them.
The goal is to compare different simulators for host, NIC, and the network in
terms of simulated network throughput and latency."""

import simbricks.experiments as exp
import simbricks.simulators as sim
import simbricks.nodeconfig as node
from simbricks.simulator_utils import create_basic_hosts

host_types = ['qemu', 'gem5', 'qt']
nic_types = ['i40e', 'cd_bm', 'cd_verilator']
net_types = ['switch', 'ns3']
experiments = []

# Create multiple experiments with different simulator permutations, which can
# be filtered later.
for host_type in host_types:
    for nic_type in nic_types:
        for net_type in net_types:
            e = exp.Experiment('netperf-' + host_type + '-' + net_type + '-' + nic_type)

            # network
            if net_type == 'switch':
                net = sim.SwitchNet()
            elif net_type == 'ns3':
                net = sim.NS3BridgeNet()
            else:
                raise NameError(net_type)
            e.add_network(net)

            # host
            if host_type == 'qemu':
                host_class = sim.QemuHost
            elif host_type == 'qt':
                def qemu_timing():
                    h = sim.QemuHost()
                    h.sync = True
                    return h
                host_class = qemu_timing
            elif host_type == 'gem5':
                host_class = sim.Gem5Host
                e.checkpoint = True
            else:
                raise NameError(host_type)

            # nic
            if nic_type == 'i40e':
                nic_class = sim.I40eNIC
                nc_class = node.I40eLinuxNode
            elif nic_type == 'cd_bm':
                nic_class = sim.CorundumBMNIC
                nc_class = node.CorundumLinuxNode
            elif nic_type == 'cd_verilator':
                nic_class = sim.CorundumVerilatorNIC
                nc_class = node.CorundumLinuxNode
            else:
                raise NameError(nic_type)

            # create servers and clients
            servers = create_basic_hosts(e, 1, 'server', net, nic_class, host_class,
                    nc_class, node.NetperfServer)

            clients = create_basic_hosts(e, 1, 'client', net, nic_class, host_class,
                    nc_class, node.NetperfClient, ip_start = 2)

            for c in clients:
                c.wait = True
                c.node_config.app.server_ip = servers[0].node_config.ip

            # add to experiments
            experiments.append(e)
