feat: add limit flag for large number of list resource

Signed-off-by: Youngjin Jo <youngjinjo@megazone.com>

cmd/common/fetchService.go

@@ -379,6 +379,12 @@ func fetchJSONResponse(config *Config, serviceName string, verb string, resource
 	var err error
 	var hostPort string
 
+	if verb == "list" && options.Page > 0 {
+		options.Parameters = append(options.Parameters,
+			fmt.Sprintf("page=%d", options.Page),
+			fmt.Sprintf("page_size=%d", options.PageSize))
+	}
+
 	if strings.HasPrefix(config.Environment, "local-") {
 		conn, err = grpc.Dial("localhost:50051", grpc.WithInsecure(),
 			grpc.WithDefaultCallOptions(
@@ -741,10 +747,10 @@ func getMinimalFields(serviceName, resourceName string, refClient *grpcreflect.C
 
 func printTable(data map[string]interface{}, options *FetchOptions, serviceName, resourceName string, refClient *grpcreflect.Client) string {
 	if results, ok := data["results"].([]interface{}); ok {
-		pageSize := 10
-		currentPage := 0
-		searchTerm := ""
-		filteredResults := results
+		// Set default page size if not specified
+		if options.PageSize == 0 {
+			options.PageSize = 100
+		}
 
 		// Initialize keyboard
 		if err := keyboard.Open(); err != nil {
@@ -753,24 +759,28 @@ func printTable(data map[string]interface{}, options *FetchOptions, serviceName,
 		}
 		defer keyboard.Close()
 
-		// Extract headers from all results to ensure we get all possible fields
+		currentPage := 0
+		searchTerm := ""
+		filteredResults := results
+
+		// Extract headers
 		headers := make(map[string]bool)
-		for _, result := range results {
+		for _, result := range results[:min(1000, len(results))] {
 			if row, ok := result.(map[string]interface{}); ok {
 				for key := range row {
 					headers[key] = true
 				}
 			}
 		}
 
-		// Convert headers map to sorted slice
+		// Convert headers to sorted slice
 		headerSlice := make([]string, 0, len(headers))
 		for key := range headers {
 			headerSlice = append(headerSlice, key)
 		}
 		sort.Strings(headerSlice)
 
-		// If minimal columns are requested, only show essential fields
+		// Handle minimal columns
 		if options.MinimalColumns {
 			minimalFields := getMinimalFields(serviceName, resourceName, refClient)
 			var minimalHeaderSlice []string
@@ -792,13 +802,13 @@ func printTable(data map[string]interface{}, options *FetchOptions, serviceName,
 			}
 
 			totalItems := len(filteredResults)
-			totalPages := (totalItems + pageSize - 1) / pageSize
+			totalPages := (totalItems + options.PageSize - 1) / options.PageSize
 
 			tableData := pterm.TableData{headerSlice}
 
-			// Calculate current page items
-			startIdx := currentPage * pageSize
-			endIdx := startIdx + pageSize
+			// Calculate page items
+			startIdx := currentPage * options.PageSize
+			endIdx := startIdx + options.PageSize
 			if endIdx > totalItems {
 				endIdx = totalItems
 			}
@@ -810,8 +820,9 @@ func printTable(data map[string]interface{}, options *FetchOptions, serviceName,
 				fmt.Printf("Search: %s (Found: %d items)\n", searchTerm, totalItems)
 			}
 
-			// Add rows for current page using filteredResults
-			for _, result := range filteredResults[startIdx:endIdx] {
+			// Add rows for current page
+			pageResults := filteredResults[startIdx:endIdx]
+			for _, result := range pageResults {
 				if row, ok := result.(map[string]interface{}); ok {
 					rowData := make([]string, len(headerSlice))
 					for i, key := range headerSlice {
@@ -821,16 +832,13 @@ func printTable(data map[string]interface{}, options *FetchOptions, serviceName,
 				}
 			}
 
-			// Clear screen
-			fmt.Print("\033[H\033[2J")
-
 			// Print table
 			pterm.DefaultTable.WithHasHeader().WithData(tableData).Render()
 
 			fmt.Printf("\nPage %d of %d (Total items: %d)\n", currentPage+1, totalPages, totalItems)
 			fmt.Println("Navigation: [h]previous page, [l]next page, [/]search, [c]lear search, [q]uit")
 
-			// Get keyboard input
+			// Handle keyboard input
 			char, _, err := keyboard.GetKey()
 			if err != nil {
 				fmt.Println("Error reading keyboard input:", err)
@@ -841,14 +849,10 @@ func printTable(data map[string]interface{}, options *FetchOptions, serviceName,
 			case 'l', 'L':
 				if currentPage < totalPages-1 {
 					currentPage++
-				} else {
-					currentPage = 0
 				}
 			case 'h', 'H':
 				if currentPage > 0 {
 					currentPage--
-				} else {
-					currentPage = totalPages - 1
 				}
 			case 'q', 'Q':
 				return ""
@@ -865,24 +869,25 @@ func printTable(data map[string]interface{}, options *FetchOptions, serviceName,
 				keyboard.Open()
 			}
 		}
-	} else {
-		headers := make([]string, 0)
-		for key := range data {
-			headers = append(headers, key)
-		}
-		sort.Strings(headers)
+	}
 
-		tableData := pterm.TableData{
-			{"Field", "Value"},
-		}
+	// Handle non-list results
+	headers := make([]string, 0)
+	for key := range data {
+		headers = append(headers, key)
+	}
+	sort.Strings(headers)
 
-		for _, header := range headers {
-			value := formatTableValue(data[header])
-			tableData = append(tableData, []string{header, value})
-		}
+	tableData := pterm.TableData{
+		{"Field", "Value"},
+	}
 
-		pterm.DefaultTable.WithHasHeader().WithData(tableData).Render()
+	for _, header := range headers {
+		value := formatTableValue(data[header])
+		tableData = append(tableData, []string{header, value})
 	}
+
+	pterm.DefaultTable.WithHasHeader().WithData(tableData).Render()
 	return ""
 }
 

cmd/common/fetchVerb.go

@@ -27,6 +27,8 @@ type FetchOptions struct {
 	MinimalColumns  bool
 	Columns         string
 	Limit           int
+	Page 			int
+	PageSize 		int
 }
 
 // AddVerbCommands adds subcommands for each verb to the parent command
@@ -89,10 +91,13 @@ func AddVerbCommands(parentCmd *cobra.Command, serviceName string, groupID strin
 				sortBy := ""
 				columns := ""
 				limit := 0
+				pageSize := 100 // Default page size
+
 				if currentVerb == "list" {
 					sortBy, _ = cmd.Flags().GetString("sort")
 					columns, _ = cmd.Flags().GetString("columns")
 					limit, _ = cmd.Flags().GetInt("limit")
+					pageSize, _ = cmd.Flags().GetInt("page-size")
 				}
 
 				options := &FetchOptions{
@@ -105,6 +110,7 @@ func AddVerbCommands(parentCmd *cobra.Command, serviceName string, groupID strin
 					MinimalColumns:  currentVerb == "list" && cmd.Flag("minimal") != nil && cmd.Flag("minimal").Changed,
 					Columns:         columns,
 					Limit:           limit,
+					PageSize:        pageSize,
 				}
 
 				if currentVerb == "list" && !cmd.Flags().Changed("output") {
@@ -136,6 +142,7 @@ func AddVerbCommands(parentCmd *cobra.Command, serviceName string, groupID strin
 			verbCmd.Flags().BoolP("minimal", "m", false, "Show minimal columns")
 			verbCmd.Flags().StringP("columns", "c", "", "Specific columns (-c id,name)")
 			verbCmd.Flags().IntP("limit", "l", 0, "Number of rows")
+			verbCmd.Flags().IntP("page-size", "n", 15, "Number of items per page")
 		}
 
 		// Define flags for verbCmd