headscale/integration/dockertestutil/network.go

81 lines
1.8 KiB
Go

package dockertestutil
import (
"errors"
"net"
"github.com/ory/dockertest/v3"
"github.com/ory/dockertest/v3/docker"
)
var ErrContainerNotFound = errors.New("container not found")
func GetFirstOrCreateNetwork(pool *dockertest.Pool, name string) (*dockertest.Network, error) {
networks, err := pool.NetworksByName(name)
if err != nil || len(networks) == 0 {
if _, err := pool.CreateNetwork(name); err == nil {
// Create does not give us an updated version of the resource, so we need to
// get it again.
networks, err := pool.NetworksByName(name)
if err != nil {
return nil, err
}
return &networks[0], nil
}
}
return &networks[0], nil
}
func AddContainerToNetwork(
pool *dockertest.Pool,
network *dockertest.Network,
testContainer string,
) error {
containers, err := pool.Client.ListContainers(docker.ListContainersOptions{
All: true,
Filters: map[string][]string{
"name": {testContainer},
},
})
if err != nil {
return err
}
err = pool.Client.ConnectNetwork(network.Network.ID, docker.NetworkConnectionOptions{
Container: containers[0].ID,
})
if err != nil {
return err
}
// TODO(kradalby): This doesnt work reliably, but calling the exact same functions
// seem to work fine...
// if container, ok := pool.ContainerByName("/" + testContainer); ok {
// err := container.ConnectToNetwork(network)
// if err != nil {
// return err
// }
// }
return nil
}
// RandomFreeHostPort asks the kernel for a free open port that is ready to use.
// (from https://github.com/phayes/freeport)
func RandomFreeHostPort() (int, error) {
addr, err := net.ResolveTCPAddr("tcp", "localhost:0")
if err != nil {
return 0, err
}
listener, err := net.ListenTCP("tcp", addr)
if err != nil {
return 0, err
}
defer listener.Close()
//nolint:forcetypeassert
return listener.Addr().(*net.TCPAddr).Port, nil
}