Implement Swarm provider

internal/provider/swarm/service.go

@@ -0,0 +1,45 @@
+package swarm
+
+import (
+	"reflect"
+
+	"github.com/crazy-max/diun/internal/model"
+	"github.com/crazy-max/diun/internal/provider"
+	"github.com/crazy-max/diun/pkg/docker"
+	"github.com/docker/docker/api/types/filters"
+	"github.com/rs/zerolog/log"
+)
+
+func (c *Client) listServiceImage(elt model.PrdSwarm) []model.Image {
+	sublog := log.With().
+		Str("provider", "swarm").
+		Str("id", elt.ID).
+		Logger()
+
+	cli, err := docker.NewClient(elt.Endpoint, elt.ApiVersion, elt.TLSCertsPath, elt.TLSVerify)
+	if err != nil {
+		sublog.Error().Err(err).Msg("Cannot create Docker client")
+		return []model.Image{}
+	}
+
+	svcs, err := cli.ServiceList(filters.NewArgs())
+	if err != nil {
+		sublog.Error().Err(err).Msg("Cannot list Swarm services")
+		return []model.Image{}
+	}
+
+	var list []model.Image
+	for _, svc := range svcs {
+		image, err := provider.ValidateContainerImage(svc.Spec.TaskTemplate.ContainerSpec.Image, svc.Spec.Labels, elt.WatchByDefault)
+		if err != nil {
+			sublog.Error().Err(err).Msgf("Cannot get image from service %s", svc.ID)
+			continue
+		} else if reflect.DeepEqual(image, model.Image{}) {
+			sublog.Debug().Msgf("Watch disabled for service %s", svc.ID)
+			continue
+		}
+		list = append(list, image)
+	}
+
+	return list
+}