115 lines
2.8 KiB
Go
115 lines
2.8 KiB
Go
package docker
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import (
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"context"
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"errors"
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"time"
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"github.com/Neur0toxine/sshpoke/internal/config"
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"github.com/Neur0toxine/sshpoke/internal/logger"
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"github.com/Neur0toxine/sshpoke/pkg/dto"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/api/types/filters"
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"github.com/docker/docker/client"
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)
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var Default *Docker
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type Docker struct {
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cli *client.Client
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ctx context.Context
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}
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func New(ctx context.Context) (*Docker, error) {
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cli, err := client.NewClientWithOpts(config.Default.Docker.Opts)
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if err != nil {
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return nil, err
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}
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return &Docker{
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cli: cli,
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ctx: ctx,
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}, nil
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}
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func (d *Docker) Containers() map[string]dto.Container {
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items, err := d.cli.ContainerList(d.ctx, types.ContainerListOptions{
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Filters: filters.NewArgs(filters.Arg("status", "running")),
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})
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if err != nil {
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logger.Sugar.Errorf("cannot get containers list: %s", err)
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return nil
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}
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containers := map[string]dto.Container{}
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for _, item := range items {
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container, ok := dockerContainerToInternal(item)
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if !ok {
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continue
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}
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containers[item.ID] = container
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}
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return containers
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}
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func (d *Docker) Listen() (chan dto.Event, error) {
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cli, err := client.NewClientWithOpts(config.Default.Docker.Opts)
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if err != nil {
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return nil, err
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}
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output := make(chan dto.Event)
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go func() {
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for {
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eventSource, errSource := cli.Events(d.ctx, types.EventsOptions{
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Filters: filters.NewArgs(filters.Arg("type", "container")),
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})
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select {
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case event := <-eventSource:
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eventType := dto.TypeFromAction(event.Action)
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if (eventType != dto.EventStart && eventType != dto.EventStop) || !actorEnabled(event.Actor) {
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continue
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}
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container, err := d.cli.ContainerList(d.ctx, types.ContainerListOptions{
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Filters: filters.NewArgs(filters.Arg("id", event.Actor.ID)),
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All: true,
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})
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if err != nil || len(container) != 1 {
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logger.Sugar.Errorw("cannot get container info",
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"id", event.Actor.ID, "err", err)
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continue
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}
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converted, ok := dockerContainerToInternal(container[0])
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if !ok {
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continue
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}
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newEvent := dto.Event{
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Type: eventType,
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ID: event.Actor.ID,
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Container: converted,
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}
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msg := "exposing container"
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if eventType == dto.EventStop {
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msg = "stopping container"
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}
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logger.Sugar.Debugw(msg,
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"type", event.Action,
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"container.id", event.Actor.ID,
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"container.ip", converted.IP.String(),
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"container.port", converted.Port,
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"container.server", converted.Server,
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"container.prefix", converted.Prefix)
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output <- newEvent
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case err := <-errSource:
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if errors.Is(err, context.Canceled) {
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logger.Sugar.Debug("stopping docker event listener...")
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return
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}
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logger.Sugar.Errorf("docker error, reconnect in 1s: %s", err)
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time.Sleep(time.Second)
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continue
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}
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}
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}()
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return output, nil
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}
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