mirror of
https://github.com/juanfont/headscale.git
synced 2025-04-24 04:20:32 -04:00
108 lines
2.5 KiB
Go
108 lines
2.5 KiB
Go
package dockertestutil
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import (
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"errors"
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"fmt"
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"log"
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"net"
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"github.com/ory/dockertest/v3"
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"github.com/ory/dockertest/v3/docker"
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)
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var ErrContainerNotFound = errors.New("container not found")
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func GetFirstOrCreateNetwork(pool *dockertest.Pool, name string) (*dockertest.Network, error) {
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networks, err := pool.NetworksByName(name)
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if err != nil {
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return nil, fmt.Errorf("looking up network names: %w", err)
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}
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if len(networks) == 0 {
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if _, err := pool.CreateNetwork(name); err == nil {
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// Create does not give us an updated version of the resource, so we need to
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// get it again.
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networks, err := pool.NetworksByName(name)
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if err != nil {
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return nil, err
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}
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return &networks[0], nil
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} else {
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return nil, fmt.Errorf("creating network: %w", err)
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}
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}
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return &networks[0], nil
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}
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func AddContainerToNetwork(
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pool *dockertest.Pool,
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network *dockertest.Network,
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testContainer string,
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) error {
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containers, err := pool.Client.ListContainers(docker.ListContainersOptions{
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All: true,
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Filters: map[string][]string{
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"name": {testContainer},
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},
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})
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if err != nil {
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return err
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}
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err = pool.Client.ConnectNetwork(network.Network.ID, docker.NetworkConnectionOptions{
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Container: containers[0].ID,
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})
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if err != nil {
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return err
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}
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// TODO(kradalby): This doesn't work reliably, but calling the exact same functions
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// seem to work fine...
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// if container, ok := pool.ContainerByName("/" + testContainer); ok {
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// err := container.ConnectToNetwork(network)
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// if err != nil {
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// return err
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// }
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// }
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return nil
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}
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// RandomFreeHostPort asks the kernel for a free open port that is ready to use.
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// (from https://github.com/phayes/freeport)
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func RandomFreeHostPort() (int, error) {
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addr, err := net.ResolveTCPAddr("tcp", "localhost:0")
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if err != nil {
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return 0, err
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}
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listener, err := net.ListenTCP("tcp", addr)
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if err != nil {
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return 0, err
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}
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defer listener.Close()
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//nolint:forcetypeassert
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return listener.Addr().(*net.TCPAddr).Port, nil
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}
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// CleanUnreferencedNetworks removes networks that are not referenced by any containers.
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func CleanUnreferencedNetworks(pool *dockertest.Pool) error {
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filter := "name=hs-"
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networks, err := pool.NetworksByName(filter)
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if err != nil {
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return fmt.Errorf("getting networks by filter %q: %w", filter, err)
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}
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for _, network := range networks {
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if network.Network.Containers == nil || len(network.Network.Containers) == 0 {
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err := pool.RemoveNetwork(&network)
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if err != nil {
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log.Printf("removing network %s: %s", network.Network.Name, err)
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}
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}
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}
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return nil
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}
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