Revert "Revert "feat: backup revolution""

This reverts commit 2c515ce70a.

pkg/config/env.go

@@ -36,6 +36,8 @@ var REPOS_BASE_URL = "https://git.coopcloud.tech/coop-cloud"
 var CATALOGUE_JSON_REPO_NAME = "recipes-catalogue-json"
 var SSH_URL_TEMPLATE = "ssh://git@git.coopcloud.tech:2222/coop-cloud/%s.git"
 
+var BackupbotLabel = "coop-cloud.backupbot.enabled"
+
 // envVarModifiers is a list of env var modifier strings. These are added to
 // env vars as comments and modify their processing by Abra, e.g. determining
 // how long secrets should be.

pkg/container/container.go

@@ -28,7 +28,7 @@ func GetContainer(c context.Context, cl *client.Client, filters filters.Args, no
 		return types.Container{}, fmt.Errorf("no containers matching the %v filter found?", filter)
 	}
 
-	if len(containers) != 1 {
+	if len(containers) > 1 {
 		var containersRaw []string
 		for _, container := range containers {
 			containerName := strings.Join(container.Names, " ")

pkg/service/service.go

@@ -14,6 +14,70 @@ import (
 	"github.com/sirupsen/logrus"
 )
 
+// GetService retrieves a service container based on a label. If prompt is true
+// and the retrievd count of service containers does not match 1, then a prompt
+// is presented to let the user choose. An error is returned when no service is
+// found.
+func GetServiceByLabel(c context.Context, cl *client.Client, label string, prompt bool) (swarm.Service, error) {
+	services, err := cl.ServiceList(c, types.ServiceListOptions{})
+	if err != nil {
+		return swarm.Service{}, err
+	}
+
+	if len(services) == 0 {
+		return swarm.Service{}, fmt.Errorf("no services deployed?")
+	}
+
+	var matchingServices []swarm.Service
+	for _, service := range services {
+		if enabled, exists := service.Spec.Labels[label]; exists && enabled == "true" {
+			matchingServices = append(matchingServices, service)
+		}
+	}
+
+	if len(matchingServices) == 0 {
+		return swarm.Service{}, fmt.Errorf("no services deployed matching label '%s'?", label)
+	}
+
+	if len(matchingServices) > 1 {
+		var servicesRaw []string
+		for _, service := range matchingServices {
+			serviceName := service.Spec.Name
+			created := formatter.HumanDuration(service.CreatedAt.Unix())
+			servicesRaw = append(servicesRaw, fmt.Sprintf("%s (created %v)", serviceName, created))
+		}
+
+		if !prompt {
+			err := fmt.Errorf("expected 1 service but found %v: %s", len(matchingServices), strings.Join(servicesRaw, " "))
+			return swarm.Service{}, err
+		}
+
+		logrus.Warnf("ambiguous service list received, prompting for input")
+
+		var response string
+		prompt := &survey.Select{
+			Message: "which service are you looking for?",
+			Options: servicesRaw,
+		}
+
+		if err := survey.AskOne(prompt, &response); err != nil {
+			return swarm.Service{}, err
+		}
+
+		chosenService := strings.TrimSpace(strings.Split(response, " ")[0])
+		for _, service := range matchingServices {
+			serviceName := strings.ToLower(service.Spec.Name)
+			if serviceName == chosenService {
+				return service, nil
+			}
+		}
+
+		logrus.Panic("failed to match chosen service")
+	}
+
+	return matchingServices[0], nil
+}
+
 // GetService retrieves a service container. If prompt is true and the retrievd
 // count of service containers does not match 1, then a prompt is presented to
 // let the user choose. A count of 0 is handled gracefully.

pkg/upstream/container/exec.go

@@ -13,7 +13,10 @@ import (
 	"github.com/sirupsen/logrus"
 )
 
-func RunExec(dockerCli command.Cli, client *apiclient.Client, containerID string, execConfig *types.ExecConfig) error {
+// RunExec runs a command on a remote container. io.Writer corresponds to the
+// command output.
+func RunExec(dockerCli command.Cli, client *apiclient.Client, containerID string,
+	execConfig *types.ExecConfig) (io.Writer, error) {
 	ctx := context.Background()
 
 	// We need to check the tty _before_ we do the ContainerExecCreate, because
@@ -21,22 +24,22 @@ func RunExec(dockerCli command.Cli, client *apiclient.Client, containerID string
 	// there's no easy way to clean those up). But also in order to make "not
 	// exist" errors take precedence we do a dummy inspect first.
 	if _, err := client.ContainerInspect(ctx, containerID); err != nil {
-		return err
+		return nil, err
 	}
 	if !execConfig.Detach {
 		if err := dockerCli.In().CheckTty(execConfig.AttachStdin, execConfig.Tty); err != nil {
-			return err
+			return nil, err
 		}
 	}
 
 	response, err := client.ContainerExecCreate(ctx, containerID, *execConfig)
 	if err != nil {
-		return err
+		return nil, err
 	}
 
 	execID := response.ID
 	if execID == "" {
-		return errors.New("exec ID empty")
+		return nil, errors.New("exec ID empty")
 	}
 
 	if execConfig.Detach {
@@ -44,13 +47,13 @@ func RunExec(dockerCli command.Cli, client *apiclient.Client, containerID string
 			Detach: execConfig.Detach,
 			Tty:    execConfig.Tty,
 		}
-		return client.ContainerExecStart(ctx, execID, execStartCheck)
+		return nil, client.ContainerExecStart(ctx, execID, execStartCheck)
 	}
 	return interactiveExec(ctx, dockerCli, client, execConfig, execID)
 }
 
 func interactiveExec(ctx context.Context, dockerCli command.Cli, client *apiclient.Client,
-	execConfig *types.ExecConfig, execID string) error {
+	execConfig *types.ExecConfig, execID string) (io.Writer, error) {
 	// Interactive exec requested.
 	var (
 		out, stderr io.Writer
@@ -76,7 +79,7 @@ func interactiveExec(ctx context.Context, dockerCli command.Cli, client *apiclie
 	}
 	resp, err := client.ContainerExecAttach(ctx, execID, execStartCheck)
 	if err != nil {
-		return err
+		return out, err
 	}
 	defer resp.Close()
 
@@ -107,10 +110,10 @@ func interactiveExec(ctx context.Context, dockerCli command.Cli, client *apiclie
 
 	if err := <-errCh; err != nil {
 		logrus.Debugf("Error hijack: %s", err)
-		return err
+		return out, err
 	}
 
-	return getExecExitStatus(ctx, client, execID)
+	return out, getExecExitStatus(ctx, client, execID)
 }
 
 func getExecExitStatus(ctx context.Context, client apiclient.ContainerAPIClient, execID string) error {