move RunService from CLI to the client, print output in the command

internal/cli/client/service.go

@@ -1,4 +1,4 @@
-package cli
+package client
 
 import (
 	"context"
@@ -16,26 +16,28 @@ type ServiceOptions struct {
 	Publish []string
 }
 
-func (cli *CLI) RunService(ctx context.Context, clusterName string, opts *ServiceOptions) error {
-	c, err := cli.ConnectCluster(ctx, clusterName)
-	if err != nil {
-		return fmt.Errorf("connect to cluster: %w", err)
-	}
-	defer func() {
-		_ = c.Close()
-	}()
+type RunServiceResponse struct {
+	ID          string
+	Name        string
+	MachineName string
+}
+
+func (c *Client) RunService(ctx context.Context, opts *ServiceOptions) (RunServiceResponse, error) {
+	var resp RunServiceResponse
 
 	listResp, err := c.ListMachines(ctx, &emptypb.Empty{})
 	if err != nil {
-		return fmt.Errorf("list machines: %w", err)
+		return resp, fmt.Errorf("list machines: %w", err)
 	}
-	// TODO: update ListMachine endpoint to return machine status based on the Corrosion member list.
 
+	// TODO: find the first available machine (state UP).
 	machineIP, _ := listResp.Machines[0].Machine.Network.ManagementIp.ToAddr()
+	resp.MachineName = listResp.Machines[0].Machine.Name
 	if opts.Machine != "" {
 		for _, m := range listResp.Machines {
 			if m.Machine.Name == opts.Machine || m.Machine.Id == opts.Machine {
 				machineIP, _ = m.Machine.Network.ManagementIp.ToAddr()
+				resp.MachineName = m.Machine.Name
 				break
 			}
 		}
@@ -44,20 +46,23 @@ func (cli *CLI) RunService(ctx context.Context, clusterName string, opts *Servic
 	md := metadata.Pairs("machines", machineIP.String())
 	ctx = metadata.NewOutgoingContext(ctx, md)
 
+	// TODO: generate a random service ID.
+	resp.ID = "todo-service-id"
+	// TODO: generate a random service name if not specified.
+	resp.Name = opts.Name
+	// TODO: generate a container name from the service name.
+	// TODO: set service labels on the container.
+
 	config := &container.Config{
 		Image: opts.Image,
 	}
-	// TODO: generate a container name from the service name.
-	// TODO: set service labels on the container.
-	resp, err := c.CreateContainer(ctx, config, nil, nil, nil, opts.Name)
+	createResp, err := c.CreateContainer(ctx, config, nil, nil, nil, opts.Name)
 	if err != nil {
-		return fmt.Errorf("create container: %w", err)
+		return resp, fmt.Errorf("create container: %w", err)
+	}
+	if err = c.StartContainer(ctx, createResp.ID, container.StartOptions{}); err != nil {
+		return resp, fmt.Errorf("start container: %w", err)
 	}
 
-	if err = c.StartContainer(ctx, resp.ID, container.StartOptions{}); err != nil {
-		return fmt.Errorf("start container: %w", err)
-	}
-
-	fmt.Printf("Service %q started with container ID %q\n", opts.Name, resp.ID)
-	return nil
+	return resp, nil
 }