fix(cmd/deployment): resolve service from --deployment-id in log

internal/cmd/deployment/log/log.go

@@ -87,8 +87,22 @@ func runLogNonInteractive(f *cmdutil.Factory, opts *Options) (err error) {
 		opts.serviceID = service.ID
 	}
 
-	// When serviceID is available, resolve projectID and environmentID from the service
-	if opts.serviceID != "" {
+	if opts.deploymentID != "" && opts.serviceID == "" {
+		// A deployment ID already identifies its project, service and environment.
+		deployment, err := f.ApiClient.GetDeployment(context.Background(), opts.deploymentID)
+		if err != nil {
+			return fmt.Errorf("failed to get deployment: %w", err)
+		}
+		if deployment == nil {
+			return fmt.Errorf("deployment %s not found", opts.deploymentID)
+		}
+		opts.projectID = deployment.ProjectID
+		opts.serviceID = deployment.ServiceID
+		if opts.environmentID == "" {
+			opts.environmentID = deployment.EnvironmentID
+		}
+	} else if opts.serviceID != "" {
+		// When serviceID is available, resolve projectID and environmentID from the service
 		service, err := f.ApiClient.GetService(context.Background(), opts.serviceID, "", "", "")
 		if err != nil {
 			return fmt.Errorf("failed to get service: %w", err)

internal/cmd/deployment/log/log_test.go

@@ -0,0 +1,81 @@
+package log_test
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"go.uber.org/zap"
+
+	deploymentLog "github.com/zeabur/cli/internal/cmd/deployment/log"
+	"github.com/zeabur/cli/internal/cmdutil"
+	"github.com/zeabur/cli/pkg/api"
+	"github.com/zeabur/cli/pkg/model"
+	"github.com/zeabur/cli/pkg/printer"
+)
+
+// stubClient stubs only the calls a deployment-id lookup should need. Any
+// other Client method hits the nil embedded interface and panics.
+type stubClient struct {
+	api.Client
+
+	deployment *model.Deployment
+
+	gotServiceID, gotEnvironmentID, gotDeploymentID string
+}
+
+func (c *stubClient) GetDeployment(_ context.Context, id string) (*model.Deployment, error) {
+	if c.deployment == nil || c.deployment.ID != id {
+		return nil, nil
+	}
+	return c.deployment, nil
+}
+
+func (c *stubClient) GetRuntimeLogs(_ context.Context, serviceID, environmentID, deploymentID string) (model.Logs, error) {
+	c.gotServiceID = serviceID
+	c.gotEnvironmentID = environmentID
+	c.gotDeploymentID = deploymentID
+	return model.Logs{}, nil
+}
+
+func TestLogResolvesServiceFromDeploymentID(t *testing.T) {
+	t.Parallel()
+
+	for _, interactive := range []bool{false, true} {
+		client := &stubClient{deployment: &model.Deployment{
+			ID:            "6aa50431fbf9c810b64d3a2f",
+			ProjectID:     "6aa50431fbf9c810b64d3a20",
+			ServiceID:     "6aa50431fbf9c810b64d3a21",
+			EnvironmentID: "6aa50431fbf9c810b64d3a22",
+		}}
+		f := &cmdutil.Factory{
+			ApiClient: client,
+			Log:       zap.NewNop().Sugar(),
+			Printer:   printer.New(),
+		}
+		f.Interactive = interactive
+		f.JSON = true
+
+		cmd := deploymentLog.NewCmdLog(f)
+		cmd.SetArgs([]string{"--deployment-id", "6aa50431fbf9c810b64d3a2f"})
+		require.NoError(t, cmd.Execute(), "interactive=%v", interactive)
+
+		require.Equal(t, "6aa50431fbf9c810b64d3a21", client.gotServiceID, "interactive=%v", interactive)
+		require.Equal(t, "6aa50431fbf9c810b64d3a22", client.gotEnvironmentID, "interactive=%v", interactive)
+		require.Equal(t, "6aa50431fbf9c810b64d3a2f", client.gotDeploymentID, "interactive=%v", interactive)
+	}
+}
+
+func TestLogUnknownDeploymentID(t *testing.T) {
+	t.Parallel()
+
+	f := &cmdutil.Factory{
+		ApiClient: &stubClient{},
+		Log:       zap.NewNop().Sugar(),
+		Printer:   printer.New(),
+	}
+
+	cmd := deploymentLog.NewCmdLog(f)
+	cmd.SetArgs([]string{"--deployment-id", "6aa50431fbf9c810b64d3a2f"})
+	require.ErrorContains(t, cmd.Execute(), "not found")
+}