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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,161 @@ | ||
| package docker_support | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "time" | ||
|
|
||
| "github.com/amir20/dozzle/internal/container" | ||
| container_support "github.com/amir20/dozzle/internal/support/container" | ||
| "github.com/rs/zerolog/log" | ||
| ) | ||
|
|
||
| type ContainerFilter = func(*container.Container) bool | ||
|
|
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| type HostUnavailableError struct { | ||
| Host container.Host | ||
| Err error | ||
| } | ||
|
|
||
| func (h *HostUnavailableError) Error() string { | ||
| return fmt.Sprintf("host %s unavailable: %v", h.Host.ID, h.Err) | ||
| } | ||
|
|
||
| type ClientManager interface { | ||
| Find(id string) (container_support.ClientService, bool) | ||
| List() []container_support.ClientService | ||
| RetryAndList() ([]container_support.ClientService, []error) | ||
| Subscribe(ctx context.Context, channel chan<- container.Host) | ||
| Hosts(ctx context.Context) []container.Host | ||
| LocalClients() []container.Client | ||
| } | ||
|
|
||
| type MultiHostService struct { | ||
| manager ClientManager | ||
| timeout time.Duration | ||
| } | ||
|
|
||
| func NewMultiHostService(manager ClientManager, timeout time.Duration) *MultiHostService { | ||
| m := &MultiHostService{ | ||
| manager: manager, | ||
| timeout: timeout, | ||
| } | ||
|
|
||
| return m | ||
| } | ||
|
|
||
| func (m *MultiHostService) FindContainer(host string, id string, filter container.ContainerFilter) (*container_support.ContainerService, error) { | ||
| client, ok := m.manager.Find(host) | ||
| if !ok { | ||
| return nil, fmt.Errorf("host %s not found", host) | ||
| } | ||
| ctx, cancel := context.WithTimeout(context.Background(), m.timeout) | ||
| defer cancel() | ||
| container, err := client.FindContainer(ctx, id, filter) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return container_support.NewContainerService(client, container), nil | ||
| } | ||
|
|
||
| func (m *MultiHostService) ListContainersForHost(host string, filter container.ContainerFilter) ([]container.Container, error) { | ||
| client, ok := m.manager.Find(host) | ||
| if !ok { | ||
| return nil, fmt.Errorf("host %s not found", host) | ||
| } | ||
| ctx, cancel := context.WithTimeout(context.Background(), m.timeout) | ||
| defer cancel() | ||
|
|
||
| return client.ListContainers(ctx, filter) | ||
| } | ||
|
|
||
| func (m *MultiHostService) ListAllContainers(filter container.ContainerFilter) ([]container.Container, []error) { | ||
| containers := make([]container.Container, 0) | ||
| clients, errors := m.manager.RetryAndList() | ||
|
|
||
| for _, client := range clients { | ||
| ctx, cancel := context.WithTimeout(context.Background(), m.timeout) | ||
| defer cancel() | ||
| list, err := client.ListContainers(ctx, filter) | ||
| if err != nil { | ||
| host, _ := client.Host(ctx) | ||
| log.Debug().Err(err).Str("host", host.Name).Msg("error listing containers") | ||
| host.Available = false | ||
| errors = append(errors, &HostUnavailableError{Host: host, Err: err}) | ||
| continue | ||
| } | ||
|
|
||
| containers = append(containers, list...) | ||
| } | ||
|
|
||
| return containers, errors | ||
| } | ||
|
|
||
| func (m *MultiHostService) ListAllContainersFiltered(userFilter container.ContainerFilter, filter ContainerFilter) ([]container.Container, []error) { | ||
| containers, err := m.ListAllContainers(userFilter) | ||
| filtered := make([]container.Container, 0, len(containers)) | ||
| for _, container := range containers { | ||
| if filter(&container) { | ||
| filtered = append(filtered, container) | ||
| } | ||
| } | ||
| return filtered, err | ||
| } | ||
|
|
||
| func (m *MultiHostService) SubscribeEventsAndStats(ctx context.Context, events chan<- container.ContainerEvent, stats chan<- container.ContainerStat) { | ||
| for _, client := range m.manager.List() { | ||
| client.SubscribeEvents(ctx, events) | ||
| client.SubscribeStats(ctx, stats) | ||
| } | ||
| } | ||
|
|
||
| func (m *MultiHostService) SubscribeContainersStarted(ctx context.Context, containers chan<- container.Container, filter ContainerFilter) { | ||
| newContainers := make(chan container.Container) | ||
| for _, client := range m.manager.List() { | ||
| client.SubscribeContainersStarted(ctx, newContainers) | ||
| } | ||
| go func() { | ||
| <-ctx.Done() | ||
| close(newContainers) | ||
| }() | ||
|
|
||
| go func() { | ||
| for container := range newContainers { | ||
| if filter(&container) { | ||
| select { | ||
| case containers <- container: | ||
| case <-ctx.Done(): | ||
| return | ||
| } | ||
| } | ||
| } | ||
| }() | ||
| } | ||
|
|
||
| func (m *MultiHostService) TotalClients() int { | ||
| return len(m.manager.List()) | ||
| } | ||
|
|
||
| func (m *MultiHostService) Hosts() []container.Host { | ||
| ctx, cancel := context.WithTimeout(context.Background(), m.timeout) | ||
| defer cancel() | ||
| return m.manager.Hosts(ctx) | ||
| } | ||
|
|
||
| func (m *MultiHostService) LocalHost() (container.Host, error) { | ||
| for _, host := range m.Hosts() { | ||
| if host.Type == "local" { | ||
| return host, nil | ||
| } | ||
| } | ||
| return container.Host{}, fmt.Errorf("local host not found") | ||
| } | ||
|
|
||
| func (m *MultiHostService) SubscribeAvailableHosts(ctx context.Context, hosts chan<- container.Host) { | ||
| m.manager.Subscribe(ctx, hosts) | ||
| } | ||
|
|
||
| func (m *MultiHostService) LocalClients() []container.Client { | ||
| return m.manager.LocalClients() | ||
| } |
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