[#1967]: feature: show RPC error message in terminal instead of failing

2 files changed, 51 insertions, 25 deletions

diff --git a/internal/cli/workers/command.go b/internal/cli/workers/command.go
index 8ea69600..3c34740e 100644
--- a/internal/cli/workers/command.go
+++ b/internal/cli/workers/command.go
@@ -8,7 +8,7 @@ import (
 	"syscall"
 	"time"
 
-	"github.com/roadrunner-server/api/v4/plugins/v1/jobs"
+	"github.com/roadrunner-server/api/v4/plugins/v4/jobs"
 	internalRpc "github.com/roadrunner-server/roadrunner/v2024/internal/rpc"
 
 	tm "github.com/buger/goterm"
@@ -46,12 +46,13 @@ func NewCommand(cfgFile *string, override *[]string) *cobra.Command { //nolint:f
 			plugins := args        // by default, we expect a plugin list from user
 			if len(plugins) == 0 { // but if nothing was passed - request all informers list
 				if err = client.Call(informerList, true, &plugins); err != nil {
-					return err
+					return fmt.Errorf("failed to get list of plugins: %w", err)
 				}
 			}
 
 			if !interactive {
-				return showWorkers(plugins, client)
+				showWorkers(plugins, client)
+				return nil
 			}
 
 			oss := make(chan os.Signal, 1)
@@ -71,9 +72,7 @@ func NewCommand(cfgFile *string, override *[]string) *cobra.Command { //nolint:f
 					tm.MoveCursor(1, 1)
 					tm.Flush()
 
-					if err = showWorkers(plugins, client); err != nil {
-						return errors.E(op, err)
-					}
+					showWorkers(plugins, client)
 				}
 			}
 		},
@@ -90,9 +89,8 @@ func NewCommand(cfgFile *string, override *[]string) *cobra.Command { //nolint:f
 	return cmd
 }
 
-func showWorkers(plugins []string, client *rpc.Client) error {
+func showWorkers(plugins []string, client *rpc.Client) {
 	const (
-		op              = errors.Op("show_workers")
 		informerWorkers = "informer.Workers"
 		informerJobs    = "informer.Jobs"
 		// this is only one exception to Render the workers, service plugin has the same workers as other plugins,
@@ -105,7 +103,9 @@ func showWorkers(plugins []string, client *rpc.Client) error {
 		list := &informer.WorkerList{}
 
 		if err := client.Call(informerWorkers, plugin, &list); err != nil {
-			return errors.E(op, err)
+			// this is a special case, when we can't get workers list, we need to render an error message
+			WorkerTable(os.Stdout, list.Workers, fmt.Errorf("failed to receive information about %s plugin: %w", plugin, err)).Render()
+			continue
 		}
 
 		if len(list.Workers) == 0 {
@@ -121,14 +121,15 @@ func showWorkers(plugins []string, client *rpc.Client) error {
 
 		fmt.Printf("Workers of [%s]:\n", color.HiYellowString(plugin))
 
-		WorkerTable(os.Stdout, list.Workers).Render()
+		WorkerTable(os.Stdout, list.Workers, nil).Render()
 	}
 
 	for _, plugin := range plugins {
 		var jst []*jobs.State
 
 		if err := client.Call(informerJobs, plugin, &jst); err != nil {
-			return errors.E(op, err)
+			JobsTable(os.Stdout, jst, fmt.Errorf("failed to receive information about %s plugin: %w", plugin, err)).Render()
+			continue
 		}
 
 		// eq to nil
@@ -137,8 +138,6 @@ func showWorkers(plugins []string, client *rpc.Client) error {
 		}
 
 		fmt.Printf("Jobs of [%s]:\n", color.HiYellowString(plugin))
-		JobsTable(os.Stdout, jst).Render()
+		JobsTable(os.Stdout, jst, nil).Render()
 	}
-
-	return nil
 }
diff --git a/internal/cli/workers/render.go b/internal/cli/workers/render.go
index e18fb243..1b6a90de 100644
--- a/internal/cli/workers/render.go
+++ b/internal/cli/workers/render.go
@@ -9,7 +9,7 @@ import (
 	"github.com/dustin/go-humanize"
 	"github.com/fatih/color"
 	"github.com/olekukonko/tablewriter"
-	"github.com/roadrunner-server/api/v4/plugins/v1/jobs"
+	"github.com/roadrunner-server/api/v4/plugins/v4/jobs"
 	"github.com/roadrunner-server/pool/state/process"
 )
 
@@ -19,11 +19,7 @@ const (
 )
 
 // WorkerTable renders table with information about rr server workers.
-func WorkerTable(writer io.Writer, workers []*process.State) *tablewriter.Table {
-	sort.Slice(workers, func(i, j int) bool {
-		return workers[i].Pid < workers[j].Pid
-	})
-
+func WorkerTable(writer io.Writer, workers []*process.State, err error) *tablewriter.Table {
 	tw := tablewriter.NewWriter(writer)
 	tw.SetHeader([]string{"PID", "Status", "Execs", "Memory", "CPU%", "Created"})
 	tw.SetColMinWidth(0, 7)
@@ -33,6 +29,23 @@ func WorkerTable(writer io.Writer, workers []*process.State) *tablewriter.Table
 	tw.SetColMinWidth(4, 7)
 	tw.SetColMinWidth(5, 18)
 
+	if err != nil {
+		tw.Append([]string{
+			"0",
+			err.Error(),
+			"ERROR",
+			"ERROR",
+			"ERROR",
+			"ERROR",
+		})
+
+		return tw
+	}
+
+	sort.Slice(workers, func(i, j int) bool {
+		return workers[i].Pid < workers[j].Pid
+	})
+
 	for i := 0; i < len(workers); i++ {
 		tw.Append([]string{
 			strconv.Itoa(int(workers[i].Pid)),
@@ -75,11 +88,7 @@ func ServiceWorkerTable(writer io.Writer, workers []*process.State) *tablewriter
 }
 
 // JobsTable renders table with information about rr server jobs.
-func JobsTable(writer io.Writer, jobs []*jobs.State) *tablewriter.Table {
-	sort.Slice(jobs, func(i, j int) bool {
-		return jobs[i].Pipeline < jobs[j].Pipeline
-	})
-
+func JobsTable(writer io.Writer, jobs []*jobs.State, err error) *tablewriter.Table {
 	tw := tablewriter.NewWriter(writer)
 	tw.SetAutoWrapText(false)
 	tw.SetHeader([]string{"Status", "Pipeline", "Driver", "Queue", "Active", "Delayed", "Reserved"})
@@ -92,6 +101,24 @@ func JobsTable(writer io.Writer, jobs []*jobs.State) *tablewriter.Table {
 	tw.SetColWidth(10)
 	tw.SetAlignment(tablewriter.ALIGN_LEFT)
 
+	if err != nil {
+		tw.Append([]string{
+			err.Error(),
+			"ERROR",
+			"ERROR",
+			"ERROR",
+			"ERROR",
+			"ERROR",
+			"ERROR",
+		})
+
+		return tw
+	}
+
+	sort.Slice(jobs, func(i, j int) bool {
+		return jobs[i].Pipeline < jobs[j].Pipeline
+	})
+
 	for i := 0; i < len(jobs); i++ {
 		tw.Append([]string{
 			renderReady(jobs[i].Ready),