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Docker containers: remote socket, category and running-only
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Svilen Markov
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18436e91e0
@ -1886,12 +1886,66 @@ If any of the child containers are down, their status will propagate up to the p
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| ---- | ---- | -------- | ------- |
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| hide-by-default | boolean | no | false |
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| sock-path | string | no | /var/run/docker.sock |
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| category | string | no | |
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| running-only | boolean | no | false |
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##### `hide-by-default`
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Whether to hide the containers by default. If set to `true` you'll have to manually add a `glance.hide: false` label to each container you want to display. By default all containers will be shown and if you want to hide a specific container you can add a `glance.hide: true` label.
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##### `sock-path`
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The path to the Docker socket.
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The path to the Docker socket. This can also be a [remote socket](https://docs.docker.com/engine/daemon/remote-access/) or proxied socket using something like [docker-socket-proxy](https://github.com/Tecnativa/docker-socket-proxy).
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###### `category`
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Filter to only the containers which have this category specified via the `glance.category` label. Useful if you want to have multiple containers widgets, each showing a different set of containers.
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<details>
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<summary>View example</summary>
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<br>
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```yaml
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services:
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jellyfin:
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image: jellyfin/jellyfin:latest
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labels:
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glance.name: Jellyfin
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glance.icon: si:jellyfin
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glance.url: https://jellyfin.domain.com
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glance.category: media
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gitea:
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image: gitea/gitea:latest
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labels:
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glance.name: Gitea
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glance.icon: si:gitea
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glance.url: https://gitea.domain.com
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glance.category: dev-tools
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vaultwarden:
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image: vaultwarden/server:latest
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labels:
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glance.name: Vaultwarden
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glance.icon: si:vaultwarden
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glance.url: https://vaultwarden.domain.com
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glance.category: dev-tools
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```
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Then you can use the `category` property to filter the containers:
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```yaml
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- type: docker-containers
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title: Dev tool containers
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category: dev-tools
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- type: docker-containers
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title: Media containers
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category: media
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```
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</details>
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##### `running-only`
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Whether to only show running containers. If set to `true` only containers that are currently running will be displayed. If set to `false` all containers will be displayed regardless of their state.
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#### Labels
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| Name | Description |
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@ -1904,6 +1958,7 @@ The path to the Docker socket.
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| glance.hide | Whether to hide the container. If set to `true` the container will not be displayed. Defaults to `false`. |
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| glance.id | The custom ID of the container. Used to group containers under a single parent. |
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| glance.parent | The ID of the parent container. Used to group containers under a single parent. |
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| glance.category | The category of the container. Used to filter containers by category. |
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### DNS Stats
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Display statistics from a self-hosted ad-blocking DNS resolver such as AdGuard Home, Pi-hole, or Technitium.
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@ -7,6 +7,7 @@ import (
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"html/template"
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"net"
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"net/http"
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"net/url"
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"sort"
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"strings"
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"time"
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@ -17,6 +18,8 @@ var dockerContainersWidgetTemplate = mustParseTemplate("docker-containers.html",
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type dockerContainersWidget struct {
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widgetBase `yaml:",inline"`
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HideByDefault bool `yaml:"hide-by-default"`
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RunningOnly bool `yaml:"running-only"`
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Category string `yaml:"category"`
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SockPath string `yaml:"sock-path"`
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Containers dockerContainerList `yaml:"-"`
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}
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@ -32,7 +35,7 @@ func (widget *dockerContainersWidget) initialize() error {
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}
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func (widget *dockerContainersWidget) update(ctx context.Context) {
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containers, err := fetchDockerContainers(widget.SockPath, widget.HideByDefault)
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containers, err := fetchDockerContainers(widget.SockPath, widget.HideByDefault, widget.Category, widget.RunningOnly)
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if !widget.canContinueUpdateAfterHandlingErr(err) {
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return
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}
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@ -54,6 +57,7 @@ const (
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dockerContainerLabelIcon = "glance.icon"
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dockerContainerLabelID = "glance.id"
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dockerContainerLabelParent = "glance.parent"
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dockerContainerLabelCategory = "glance.category"
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)
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const (
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@ -137,8 +141,8 @@ func dockerContainerStateToStateIcon(state string) string {
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}
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}
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func fetchDockerContainers(socketPath string, hideByDefault bool) (dockerContainerList, error) {
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containers, err := fetchAllDockerContainersFromSock(socketPath)
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func fetchDockerContainers(socketPath string, hideByDefault bool, category string, runningOnly bool) (dockerContainerList, error) {
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containers, err := fetchDockerContainersFromSource(socketPath, category, runningOnly)
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if err != nil {
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return nil, fmt.Errorf("fetching containers: %w", err)
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}
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@ -239,17 +243,48 @@ func isDockerContainerHidden(container *dockerContainerJsonResponse, hideByDefau
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return hideByDefault
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}
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func fetchAllDockerContainersFromSock(socketPath string) ([]dockerContainerJsonResponse, error) {
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client := &http.Client{
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Timeout: 5 * time.Second,
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Transport: &http.Transport{
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DialContext: func(_ context.Context, _, _ string) (net.Conn, error) {
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return net.Dial("unix", socketPath)
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func fetchDockerContainersFromSource(source string, category string, runningOnly bool) ([]dockerContainerJsonResponse, error) {
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var hostname string
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var client *http.Client
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if strings.HasPrefix(source, "tcp://") || strings.HasPrefix(source, "http://") {
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client = &http.Client{}
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parsed, err := url.Parse(source)
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if err != nil {
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return nil, fmt.Errorf("parsing URL: %w", err)
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}
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port := parsed.Port()
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if port == "" {
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port = "80"
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}
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hostname = parsed.Hostname() + ":" + port
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} else {
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hostname = "docker"
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client = &http.Client{
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Transport: &http.Transport{
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DialContext: func(_ context.Context, _, _ string) (net.Conn, error) {
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return net.Dial("unix", source)
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},
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},
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},
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}
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}
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request, err := http.NewRequest("GET", "http://docker/containers/json?all=true", nil)
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query := url.Values{}
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query.Set("all", ternary(runningOnly, "false", "true"))
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if category != "" {
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query.Set(
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"filters",
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fmt.Sprintf(`{"label": ["%s=%s"]}`, dockerContainerLabelCategory, category),
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)
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}
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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request, err := http.NewRequestWithContext(ctx, "GET", "http://"+hostname+"/containers/json?"+query.Encode(), nil)
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if err != nil {
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return nil, fmt.Errorf("creating request: %w", err)
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}
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