https://github.com/hatchbed/log_view

log_view provides a ncurses based terminal GUI for viewing and filtering published ROS log messages.
https://github.com/hatchbed/log_view

Last synced: about 2 months ago
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log_view provides a ncurses based terminal GUI for viewing and filtering published ROS log messages.

• Host: GitHub
• URL: https://github.com/hatchbed/log_view
• Owner: hatchbed
• License: bsd-3-clause
• Created: 2020-11-24T01:48:47.000Z (almost 4 years ago)
• Default Branch: devel
• Last Pushed: 2024-07-24T14:14:09.000Z (2 months ago)
• Last Synced: 2024-07-25T15:05:34.053Z (2 months ago)
• Language: C++
• Size: 99.6 KB
• Stars: 50
• Watchers: 6
• Forks: 7
• Open Issues: 6
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.rst
  • License: LICENSE

Awesome Lists containing this project

• awesome-ros-tools - log_view - an ncurses text UI for viewing rosout logs. Allows to receive, filter, and navigate through all published rosout log messages from within a terminal to support debugging a robot live. [ROS wiki](http://wiki.ros.org/log_view)  (Development Tools / Logging)

README

        
# log_view

log_viewer is an ncurses text UI for viewing rosout logs.

![](https://raw.githubusercontent.com/wiki/hatchbed/log_view/log_viewer.gif)

### Motivation

Receive, filter, and navigate through all published rosout log messages from within a terminal to support debugging a

robot live.

### Problem

Many rosout log messages don't get printed to the terminal in the normal course when there are lots of nodes/messages.

There is also not a convienient way to filter and navigate through them in real time.

[swri_console](https://github.com/swri-robotics/swri_console) provides most of the desired functionality very well, but

is Qt based and requires a graphical interface.

### Solution

log_viewer is very similar in concept and design to swri_console, but uses ncurses instead of Qt for the interface.

Log messages can be filtered based on:

 - log level

 - node

 - whitelist text filter

 - exclude text filter

log_viewer also supports text searches and jumping from match to match.

Log messages are copied to the clipboard by selecting them.

Like swri_console, log_viewer doesn't need roscore to start and will automatically connect/reconnect with roscore when it

becomes available.

##### Keybindings

```

CTRL-c       Exit log viewer

CTRL-h       Show/hide help screen

Up Arrow     Scroll up

Down Arrow   Scroll down

Left Arrow   Scroll left

Right Arrow  Scroll right

Page Up      Scroll up a screen

Page Down    Scroll down a screen

Home         Scroll to first message

End          Scroll to last message and follow

Tab          Change focus to next input

F1           Show/hide debug level

F2           Show/hide info level

F3           Show/hide warning level

F4           Show/hide error level

F5           Show hide fatal level

F7           Enable/disable node filter

CTRL-a       Select all log lines and copy to clipboard

CTRL-n       Show/hide node selection

CTRL-s       Search for matching string

CTRL-x       Clear search

Backspace    Prev match

Enter        Next match

CTRL-e       Enable/disable text exclude filter

CTRL-f       Enable/disable text include filter

```

##### Mouse Support:

There is limited mouse support for selecting log messages and enabling/disabling the log level and node filters.  Due to

a bug in the currently distributed version of ncurses, mousewheel scrolling only works in the up direction.

![](https://raw.githubusercontent.com/wiki/hatchbed/log_view/log_viewer2.gif)

### Possible Improvements:

 - Regular expression support

 - ROS2 support

 - Support loading logs directly from bag files

 - Support loading logs from ROS log directory

 - Refine UI design and keybindings to be more consistent/intuitive