Add interactive TUI for real-time node monitoring #301

Copilot · 2025-11-04T14:46:09Z

Implementing improved console UX for fukuii-launcher

Status: Ready for Review ✅

Completed Tasks

Recent Fixes (Latest Commit)

Removed unused imports (scala.concurrent.duration._, cats.effect.IO, cats.effect.unsafe.implicits.global)
Fixed triple shutdown scenario by removing shutdown call from ConsoleUIUpdater finally block
Added synchronization to ConsoleUI.shutdown() to prevent race conditions
Fixed 'd' command to return false, properly exiting the update loop

Implementation Summary

Files Created (3)

src/main/scala/com/chipprbots/ethereum/console/ConsoleUI.scala (487 lines)
src/main/scala/com/chipprbots/ethereum/console/ConsoleUIUpdater.scala (115 lines)
Total production code: ~600 lines

Files Modified (3)

Fukuii.scala - CLI flag handling and initialization
StdNode.scala - Lifecycle integration
App.scala - Help text update

Documentation Created (4)

docs/console-ui.md - User guide
docs/adr/008-console-ui.md - Architecture decision record
docs/console-ui-mockup.txt - Visual mockups
README.md - Updated with console UI section

Key Features

✅ Terminal UI with real-time node monitoring
✅ Grid-based non-scrolling layout
✅ Peer connection status with visual indicators
✅ Blockchain sync progress with progress bars
✅ Keyboard commands (Q/R/D)
✅ Color-coded health status (Green/Yellow/Red)
✅ Ethereum Classic ASCII art
✅ Graceful fallback to standard logging
✅ --no-tui flag for headless mode

Quality Assurance

✅ Code review completed and all feedback addressed
✅ Removed unused imports
✅ Fixed shutdown race conditions with synchronization
✅ Proper shutdown coordination (single-point responsibility)
✅ Comprehensive error handling
✅ Cross-platform compatibility
✅ Thread-safe state management
✅ Proper documentation (ADR + User Guide)

Original prompt

This section details on the original issue you should resolve

<issue_title>Improved c-ux</issue_title>
<issue_description>Create an improved console UX for users running the software and want to monitor directly.

Basic requirements:
enabled by default when user uses the fukuii-launcher
can be disabled with a flag on launch
The screen should not scroll
The screen should have a grid layout
The display should show the current state of connecting to peers, count of peers, current network, block height, best block, estimated sync time etc
The user should have basic keyboard commands to exit, enable or disable features, etc
Green etc color scheme, color should cleanup on exit</issue_description>

Comments on the Issue (you are @copilot in this section)

Fixes Improved c-ux #300

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.

realcodywburns · 2025-11-04T14:53:39Z

useful ascii art for the tui:

Fukuii logo:

                                          ........                                              
                                       ......--:.....                                           
                                    ......-++++++=......                                        
                         ..     .......-++++++++++++-......                                     
                    ...............:-++++++++++%%#+++++-:.....                                  
                   ...:*%#*#%+:..=++++++++++++++###*++++++=......                               
                  ..:#+--=----+#*++++++++++++++++*##*++++++++-:..... ........                   
                 ..:#----==+=--=+#++++++++++++++++###+++++++++++-:............                  
                 ..=+---+#**#*=--**+++++++++++++++*#%++++++++++++++==####%%+...                 
               ....*+===*#+++#*--=#+++++++++++++++*##*+++++++++++*####*-......                  
           .....-+*=-----**++*#--=#+++++++++++++++*#%++++++++++*###*+++++=:......               
        ......-#=---------**+**--=#++++=++++++++++###++++++++*#*%*++++++++++=:.....             
      .....:-*#-+=----+#--+*+#+==**++++++++++*****%#*+++++++###*+++++++++++++++=:.....          
     ...:=+++%==##----=+--****--=#++++++##***+=====***##*+*#*#++++++++++++++++++++=:...         
     ...=++++#+---***#*--=#+#+--+#+++*%*==+*+=====-======###*++++++++++++++++++++++=...         
     ...=+++++#+--=*+*=-+#++%+--=#*+#*=+++#===+=-:=====+###*##++++++++=++++++++++++=...         
     ...=++++++*##*++*##++++**=---+###*+++*++====:---=+*##*+=+#*+++++++++++++++++++=...         
     ...=++++++++++++++++++++##+==---+%+++#+==:---=====+++====+%+++++++++++++++++++=...         
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     ...=++++++++++++=+++++++++##=#%%=.:%*===--=+==+##=+%%%%*==*#++++++++++++++++++=...         
     ...=++++++++++++++++++++++#*+%%%#*%%*========+#%..-%%%#%+=*%++++++++++++++++++=...         
     ...=++++++++++++*#*+++++++#*+%%%%%%%+========*%%%%%%%%#%+=##++++++++++++++++++=...         
     ...=+++++++++#%*#+=*%*++++*%+*%%%%%*=========*%%%%%%%###=+%+++++++++++++++++++=...         
     ...=+++++++#*===+*+==#*++++*#++###++++=======+%%%%%###*=+#*+++++++++++++++++++=...         
     ...=+++++*#======+*==+#*++++*%***==+*++=+*#++=+#%#%%*++*%*++++++++++++++++++++=...         
     ...=++++##======+*#+==+%*++++++##++=*%%#****++++==+++*##++++++*#*+++++++++++++=...         
     ...=+++*#======+*%*+===+#+++++++##+=+#*=+**+=++***####++++++##+*#+++++++++++++=...         
     ...=++*#======*#*#*+====*#++++++++##*=+++++++*#%%*++++++++##++*#*+++++++++++++=...         
     ...=++**====+*#*+#**====+#*+++++++*%%%%%%%%%%##%%#%%+++++#++***#++++++++++++++=...         
     ...=++#+==++###**#**+====+%+++++*%##*+*#%%#%%%%***##%++*#+****%*++++++**++++++=...         
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     ...=+++#+*#+++++++*##**+++=##++*###*==++======+#%##++#****##%*#%*===*#*#++++++=...         
     ...=++++%%*++++++++++##***##%%%*+++#+=+*=====+*##%#+++%*##%%*+==*#+==+%*++++++=...         
     ...-+++++++++++=++++++++*#%#++++++++#%##*+++*##*####+++%++*+======#++*#+++++++=...         
     ....-+++++++++++++++++++++++*#*+++++*%#***#####%%###%##%#+=+*+====+#*%+++++++-:...         
      .....:-++++++++%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%#*#%+++++-:.....          
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                   ......... .........:-+++++++#+*#+-:..................                        
                                    ......-++++*#%:.....                                        
                                       ......::..:...                                           
                                          ..........

Ethereum Classic:

                                             --                                                 
                                           .=+#+.                                               
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                                             -=

Co-authored-by: realcodywburns <13103499+realcodywburns@users.noreply.github.com>

Copilot

Pull Request Overview

This PR adds an enhanced Terminal User Interface (TUI) for real-time monitoring of the Fukuii Ethereum client. The console UI is enabled by default and provides visual feedback on node status, peer connections, blockchain sync progress, and runtime information.

Implements a singleton-based ConsoleUI using JLine 3 for terminal control
Adds ConsoleUIUpdater for periodic status polling and keyboard command handling
Integrates with node lifecycle through StdNode and Fukuii.scala with --no-tui flag support

Reviewed Changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
ConsoleUI.scala	Core UI rendering class with terminal management, keyboard input, and display sections
ConsoleUIUpdater.scala	Background updater thread for polling status and rendering UI
StdNode.scala	Integration point for starting/stopping ConsoleUIUpdater in node lifecycle
Fukuii.scala	Command-line flag parsing and ConsoleUI initialization
App.scala	Help text updated with `--no-tui` flag documentation
console-ui.md	Comprehensive user documentation for the Console UI feature
console-ui-mockup.txt	Visual mockups showing different UI states
008-console-ui.md	Architecture Decision Record documenting design choices
README.md	Updated with Console UI usage information

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

Copilot · 2025-11-04T15:18:29Z

src/main/scala/com/chipprbots/ethereum/console/ConsoleUIUpdater.scala

+import cats.effect.IO
+import cats.effect.unsafe.implicits.global


The cats.effect imports (IO and unsafe.implicits.global) are not used anywhere in the file. These imports should be removed to avoid unnecessary dependencies.

Suggested change

import cats.effect.IO

import cats.effect.unsafe.implicits.global

Fixed in e196247 - removed unused cats.effect imports

Copilot · 2025-11-04T15:18:30Z

src/main/scala/com/chipprbots/ethereum/console/ConsoleUIUpdater.scala

@@ -0,0 +1,121 @@
+package com.chipprbots.ethereum.console
+
+import scala.concurrent.duration._


The scala.concurrent.duration._ import is not used in this file. This import should be removed.

Suggested change

import scala.concurrent.duration._

Fixed in e196247 - removed unused scala.concurrent.duration import

Copilot · 2025-11-04T15:18:30Z

src/main/scala/com/chipprbots/ethereum/console/ConsoleUIUpdater.scala

+        }
+      }
+    } finally {
+      consoleUI.shutdown()


The ConsoleUI is shutdown in the finally block of updateLoop(), but it's also shutdown in StdNode.shutdown() (line 145) and in Fukuii.scala's shutdown hook (line 58). This creates a triple shutdown scenario that could cause issues. The ConsoleUI.shutdown() should only be called once. Consider removing it from the finally block since StdNode.shutdown() already calls consoleUIUpdater.stop() before calling ConsoleUI.getInstance().shutdown().

Suggested change

consoleUI.shutdown()

// Shutdown is handled elsewhere (StdNode.shutdown and shutdown hook)

Fixed in e196247 - removed shutdown call from finally block, shutdown is now only handled by StdNode.shutdown() and the shutdown hook in Fukuii.scala

Copilot · 2025-11-04T15:18:30Z

src/main/scala/com/chipprbots/ethereum/nodebuilder/StdNode.scala

    }

+    tryAndLogFailure(() => consoleUIUpdater.foreach(_.stop()))
+    tryAndLogFailure(() => ConsoleUI.getInstance().shutdown())


There's a potential race condition: consoleUIUpdater.stop() interrupts the update thread which has ConsoleUI.shutdown() in its finally block, while line 145 also calls ConsoleUI.getInstance().shutdown(). If both execute simultaneously, the singleton's shutdown method could be invoked concurrently. Consider either removing the shutdown() call from ConsoleUIUpdater's finally block or adding synchronization to ConsoleUI.shutdown().

Suggested change

tryAndLogFailure(() => ConsoleUI.getInstance().shutdown())

tryAndLogFailure(() => ConsoleUI.synchronized { ConsoleUI.getInstance().shutdown() })

Fixed in e196247 - added synchronization to ConsoleUI.shutdown() method to prevent concurrent invocations

Copilot · 2025-11-04T15:18:31Z

src/main/scala/com/chipprbots/ethereum/console/ConsoleUI.scala

+    case 'd' =>
+      shutdown()
+      log.info("Console UI disabled, switching to standard logging")
+      true


When the 'd' command is pressed, shutdown() is called which sets enabled=false and closes the terminal, but the method returns true indicating the loop should continue. This will cause the updateLoop() to check consoleUI.isEnabled on the next iteration and exit. However, the finally block will then call shutdown() again on an already-shutdown ConsoleUI. Consider returning false here or handling the disabled state differently.

Suggested change

true

false

Fixed in e196247 - changed return value to false so the update loop exits cleanly when 'd' command is pressed

realcodywburns · 2025-11-04T15:27:49Z

@copilot apply changes based on the comments in this thread

…dition Co-authored-by: realcodywburns <13103499+realcodywburns@users.noreply.github.com>

Initial plan

080a09b

Copilot AI assigned Copilot and realcodywburns Nov 4, 2025

Copilot started work on behalf of realcodywburns November 4, 2025 14:46 View session

Copilot AI and others added 5 commits November 4, 2025 14:53

Add console UI framework with JLine3

bc5c372

Co-authored-by: realcodywburns <13103499+realcodywburns@users.noreply.github.com>

Enhance console UI with ASCII art and visual improvements

7acdd5a

Co-authored-by: realcodywburns <13103499+realcodywburns@users.noreply.github.com>

Add documentation and ADR for console UI feature

449e162

Co-authored-by: realcodywburns <13103499+realcodywburns@users.noreply.github.com>

Add console UI visual mockups and examples

d81beec

Address code review feedback - extract constants and fix shutdown

ee870ce

Co-authored-by: realcodywburns <13103499+realcodywburns@users.noreply.github.com>

realcodywburns requested a review from Copilot November 4, 2025 15:15

Copilot AI changed the title ~~[WIP] Create improved console UX for user monitoring~~ Add interactive TUI for real-time node monitoring Nov 4, 2025

Copilot AI requested a review from realcodywburns November 4, 2025 15:18

Copilot finished work on behalf of realcodywburns November 4, 2025 15:18

Copilot AI reviewed Nov 4, 2025

View reviewed changes

Merge branch 'develop' into copilot/improve-console-ux

18a78f6

github-actions bot added documentation Improvements or additions to documentation core labels Nov 4, 2025

Copilot started work on behalf of realcodywburns November 4, 2025 15:28 View session

Fix code review issues - remove unused imports, fix shutdown race con…

e196247

…dition Co-authored-by: realcodywburns <13103499+realcodywburns@users.noreply.github.com>

Copilot finished work on behalf of realcodywburns November 4, 2025 15:32

realcodywburns marked this pull request as ready for review November 4, 2025 15:51

realcodywburns merged commit 05cac32 into develop Nov 4, 2025
15 of 26 checks passed

realcodywburns deleted the copilot/improve-console-ux branch November 4, 2025 15:52

		import cats.effect.IO
		import cats.effect.unsafe.implicits.global

		@@ -0,0 +1,121 @@
		package com.chipprbots.ethereum.console

		import scala.concurrent.duration._

	consoleUI.shutdown()
	// Shutdown is handled elsewhere (StdNode.shutdown and shutdown hook)

	tryAndLogFailure(() => ConsoleUI.getInstance().shutdown())
	tryAndLogFailure(() => ConsoleUI.synchronized { ConsoleUI.getInstance().shutdown() })

Add interactive TUI for real-time node monitoring #301

Add interactive TUI for real-time node monitoring #301

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Completed Tasks

Recent Fixes (Latest Commit)

Implementation Summary

Files Created (3)

Files Modified (3)

Documentation Created (4)

Key Features

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