wip: service registration

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>

runtime/docker/container.go

@@ -0,0 +1,9 @@
+package docker
+
+type Container struct {
+	id string
+}
+
+func (c Container) ID() string {
+	return c.id
+}

runtime/docker/create.go

@@ -0,0 +1,13 @@
+package docker
+
+import (
+	"github.com/ehazlett/element/runtime"
+	"github.com/sirupsen/logrus"
+)
+
+func (d *Docker) Create(spec *runtime.Spec) error {
+	logrus.WithFields(logrus.Fields{
+		"spec": spec,
+	}).Debug("creating container")
+	return nil
+}

runtime/docker/delete.go

@@ -0,0 +1,5 @@
+package docker
+
+func (d *Docker) Delete(id string) error {
+	return nil
+}

runtime/docker/docker.go

@@ -0,0 +1,24 @@
+package docker
+
+import (
+	"github.com/docker/docker/client"
+)
+
+const (
+	elementRuntimeLabel = "runtime.element"
+)
+
+type Docker struct {
+	client *client.Client
+}
+
+func New() (*Docker, error) {
+	c, err := client.NewEnvClient()
+	if err != nil {
+		return nil, err
+	}
+
+	return &Docker{
+		client: c,
+	}, nil
+}

runtime/docker/list.go

@@ -0,0 +1,30 @@
+package docker
+
+import (
+	"context"
+
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/api/types/filters"
+	"github.com/ehazlett/element/runtime"
+)
+
+func (d *Docker) List(namespace string) ([]runtime.Container, error) {
+	optFilters := filters.NewArgs()
+	//optFilters.Add("label", elementRuntimeLabel)
+
+	dockerContainers, err := d.client.ContainerList(context.Background(), types.ContainerListOptions{
+		Filters: optFilters,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	var containers []runtime.Container
+	for _, c := range dockerContainers {
+		containers = append(containers, Container{
+			id: c.ID,
+		})
+	}
+
+	return containers, nil
+}