CodeIgniter 4 Log Viewer

This is a simple Log Viewer for viewing CodeIgniter 4 logs in the browser or via API calls (that returns a JSON response)

This project is inspired by the laravel-log-viewer project.

A typical log view looks like this:

Usage

Requirements

• PHP >= 7.2
• Codeigniter 4

Composer Installation

composer require seunmatt/codeigniter-log-viewer

Controller Integration for Browser Display

All that is required is to execute the showLogs() method in a Controller that is mapped to a route:

A typical Controller (LogViewerController.php) will have the following content:

namespace App\Controllers;
use CILogViewer\CILogViewer;

class LogViewerController extends BaseController
{
    public function index() {
        $logViewer = new CILogViewer();
        return $this->logViewer->showLogs();
    }
}

Then the route app/Config/Routes.php can be configured like:

$routes->add('logs', "LogViewerController::index");

And that's all! If you visit /logs on your browser you should see all the logs that are in writable/logs folder and their content

Configuration

The package allows you to configure some of its parameters by creating a CILogViewer class in CodeIgniter's Config folder and then adding the respective class variables.

• The folder path for log files can be configured with the $logFolderPath config var.

• The file pattern for matching all the log files in the log folder can be configured by adding $logFilePattern config var.

• The name of the view that renders the logs page can be changed using the $viewName config var. Please note that this can be a route relative to your View path or a namespace route.

Example configuration file app/Config/CILogViewer.php:

<?php
namespace Config;
use CodeIgniter\Config\BaseConfig;

class CILogViewer extends BaseConfig {
    public $logFilePattern = 'log-*.php';
    public $viewName = 'myLogViewer/log'
}

Viewing Log Files via API Calls

If you're developing an API Service, powered by CodeIgniter, this library can still be used to view your log files.

Controller Setup

The setup is the same as that mentioned above:

• Create a Controller e.g. ApiLogViewerController.php,
• Create a function e.g. index()
• In the function, call echo $this->logViewer->showLogs();
• Finally, map your controller function to a route.

API Commands

The API is implemented via a set of query params that can be appended to the /logs path.

Query:

• /logs?api=list will list all the log files available in the configured folder

Response:

{
   "status": true,
   "log_files": [
       {
           "file_b64": "bG9nLTIwMTgtMDEtMTkucGhw",
           "file_name": "log-2018-01-19.php"
       },
       {
           "file_b64": "bG9nLTIwMTgtMDEtMTcucGhw",
           "file_name": "log-2018-01-17.php"
       }
   ]
}

file_b64 is the base64 encoded name of the file that will be used in further operations and API calls

Query:

• /logs?api=view&f=bG9nLTIwMTgtMDEtMTcucGhw will return the logs contained in the log file specified by the f parameter.

The value of the f (f stands for file) is the base64 encoded format of the log file name. It is obtained from the /logs?api=list API call. A list of all available log files is also returned.

Response:

{
    "log_files": [
        {
            "file_b64": "bG9nLTIwMTgtMDEtMTkucGhw",
            "file_name": "log-2018-01-19.php"
        },
        {
            "file_b64": "bG9nLTIwMTgtMDEtMTcucGhw",
            "file_name": "log-2018-01-17.php"
        }
    ],
    "status": true,
    "logs": [
        "ERROR - 2018-01-23 07:12:31 --> 404 Page Not Found: admin/Logs/index",
        "ERROR - 2018-01-23 07:12:37 --> 404 Page Not Found: admin//index",
        "ERROR - 2018-01-23 15:23:02 --> 404 Page Not Found: Faviconico/index"
    ]
}

The API Query can also take one last parameter, sline that will determine how the logs are returned When it's true the logs are returned in a single line:

Query:

/logs?api=view&f=bG9nLTIwMTgtMDEtMTkucGhw&sline=true

Response:

{
   "log_files": [
       {
           "file_b64": "bG9nLTIwMTgtMDEtMTkucGhw",
           "file_name": "log-2018-01-19.php"
       },
       {
           "file_b64": "bG9nLTIwMTgtMDEtMTcucGhw",
           "file_name": "log-2018-01-17.php"
       }
   ],
   "status": true,
   "logs": "ERROR - 2018-01-23 07:12:31 --> 404 Page Not Found: admin/Logs/index\r\nERROR - 2018-01-23 07:12:37 --> 404 Page Not Found: admin//index\r\nERROR - 2018-01-23 15:23:02 --> 404 Page Not Found: Faviconico/index\r\n"
}

When it's false (Default), the logs are returned in as an array, where each element is a line in the log file:

Query:

/logs?api=view&f=bG9nLTIwMTgtMDEtMTkucGhw&sline=false OR logs?api=view&f=bG9nLTIwMTgtMDEtMTkucGhw

Response:

{
   
   "logs": [
       "ERROR - 2018-01-23 07:12:31 --> 404 Page Not Found: admin/Logs/index",
       "ERROR - 2018-01-23 07:12:37 --> 404 Page Not Found: admin//index",
       "ERROR - 2018-01-23 15:23:02 --> 404 Page Not Found: Faviconico/index"
   ]
}

Query:

/logs?api=delete&f=bG9nLTIwMTgtMDEtMTkucGhw will delete a single log file. The f parameter is the base64 encoded name of the file and can be obtained from the view api above.

Query:

/logs?api=delete&f=all will delete all log files in the configured folder path. Take note of the value for f which is the literal 'all'.

IF A FILE IS TOO LARGE (> 50MB), YOU CAN DOWNLOAD IT WITH THIS API QUERY /logs?dl=bG9nLTIwMTgtMDEtMTcucGhw

SECURITY NOTE

It is Highly Recommended that you protect/secure the route for your logs. It should not be an open resource!

Author

Codeigniter 4 Log Viewer by Miguel Martinez
Based on the Codeigniter 3 version by by Seun Matt

LICENSE

MIT