// Copyright 2020 The gVisor Authors. // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. package harness import ( "context" "net" "os/exec" "gvisor.dev/gvisor/pkg/test/dockerutil" "gvisor.dev/gvisor/pkg/test/testutil" ) // Machine describes a real machine for use in benchmarks. type Machine interface { // GetContainer gets a container from the machine, GetContainer(ctx context.Context, log testutil.Logger) *dockerutil.Container // RunCommand runs cmd on this machine. RunCommand(cmd string, args ...string) (string, error) // Returns IP Address for the machine. IPAddress() (net.IP, error) // CleanUp cleans up this machine. CleanUp() } // localMachine describes this machine. type localMachine struct { } // GetContainer implements Machine.GetContainer for localMachine. func (l *localMachine) GetContainer(ctx context.Context, logger testutil.Logger) *dockerutil.Container { return dockerutil.MakeContainer(ctx, logger) } // RunCommand implements Machine.RunCommand for localMachine. func (l *localMachine) RunCommand(cmd string, args ...string) (string, error) { c := exec.Command(cmd, args...) out, err := c.CombinedOutput() return string(out), err } // IPAddress implements Machine.IPAddress. func (l *localMachine) IPAddress() (net.IP, error) { conn, err := net.Dial("udp", "8.8.8.8:80") if err != nil { return nil, err } defer conn.Close() addr := conn.LocalAddr().(*net.UDPAddr) return addr.IP, nil } // CleanUp implements Machine.CleanUp and does nothing for localMachine. func (*localMachine) CleanUp() { }