Looking for a module to display logs in realtime

[MyMirror]

Hello everyone,
Is there already a module that always displays the last 20 lines of a log file?
It would be desirable to have parameters for:

• the number of lines to be displayed
• the log file specification (including the complete path)
• the option to adjust the font size

Example
{
module: ‘MMM-Log’,
position: ‘bottom_center’,
config: {
log: ‘/var/log/syslog’,
lines: 20,
fontsize: ‘12’,
maxWidth: ‘25%’, // Sizes the window
}
},
Thank you for your tips and advice.

[sdetweil]

@MyMirror I’m not aware of a module that does this

But it shouldn’t be hard to create

tail /f /n:xxx filename

Can get the data

nodejs exec in the node_helper can launch tail and capture its stdout data

Then use sendSocketNotification to send the data up to the browser side of the module to display, where the fontsize would be used

The data will have to get its line ends (cr/lf) replaced by web line ends (
)

I think it would be better to put the fontsize in css file to keep all the styling options in one place. Module adds a class name to the div holding the data, and specifies a provided css file that has the class defined with the styles you want

[MyMirror]

@sdetweil
Hi Sam,

I haven’t written a module yet and I’m not very familiar with Linux – and even less so with nodejs, css and all the other stuff.
Maybe someone out there would like to try their hand at programming such a module.

[schlomm]

@MyMirror I’ll give this a try. Ping me again if you haven’t Heard from me until the end of the week.

[MyMirror]

@schlomm - great !

[MyMirror]

@schlomm
the requested ping :-)

[schlomm]

@MyMirror Well done :) I’ve implemented a module last week - to give you a preview:
With LOG-Level Highlighting:

Without Highlighting (because INFO, ERROR, WARN…) is not used:

Right now I’m struggeling with the issue that multiple instances do not show different logs but all the time the second configured. Do you need more than one instance :D?
If I have some free time, I will upload the first version tomorrow or lately on Wednesday.

See you :)

[sdetweil]

@schlomm you have to pass the instance id from the web as part of the request and send it back w the data. And the web side checks to match its id

sendSocketNotification from the helper is to ALL connected instances at once

[schlomm]

@MyMirror Nevermind - I’ve made some changes and now all is working properly :) Your’re welcome to test it. If there is anything missing or an issue, please drop me a line.

• You can find the module here: https://github.com/schlomm/MMM-LogfileViewer
• I’ve also made a small post in the ShowCase section here: https://forum.magicmirror.builders/topic/19937/mmmlogfileviewer-view-your-logs-on-your-magicmirror
• And I’ve already updated the 3rd Party Module list - the module will be listed here a tomorrow.