| 1 |
<?php |
| 2 |
|
| 3 |
namespace DebugLogViewer\Admin\Services; |
| 4 |
|
| 5 |
if (! defined('ABSPATH')) { |
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exit; // Exit if accessed directly |
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} |
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|
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use DebugLogViewer\Admin\Models\LogModel; |
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use function DebugLogViewer\Admin\Controllers\dbg_lv; |
| 11 |
|
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|
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class LogCleanupService |
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{ |
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|
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// Maximum log file size in bytes (default: 50MB) |
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private $maxLogSize; |
| 18 |
private $logFilePath; |
| 19 |
private $logModel; |
| 20 |
// Percentage of log to keep when truncating (default: 10%) |
| 21 |
private $retentionPercentage = 0.10; |
| 22 |
|
| 23 |
/** |
| 24 |
* Option names for WordPress options table |
| 25 |
*/ |
| 26 |
const OPTION_MAX_LOG_SIZE = 'dbg_lv_max_log_size'; |
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const OPTION_CLEANUP_ENABLED = 'dbg_lv_cleanup_enabled'; |
| 28 |
const OPTION_CLEANUP_METHOD = 'dbg_lv_cleanup_method'; |
| 29 |
const OPTION_LAST_CLEANUP_TIME = 'dbg_lv_last_cleanup_time'; |
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const OPTION_LAST_CLEANUP_SIZE = 'dbg_lv_last_cleanup_size'; |
| 31 |
const OPTION_RETENTION_PERCENT = 'dbg_lv_retention_percentage'; |
| 32 |
const OPTION_CLEANUP_SCHEDULE = 'dbg_lv_cleanup_schedule'; |
| 33 |
const OPTION_CLEANUP_NOTIFICATIONS = 'dbg_lv_cleanup_notifications_enabled'; |
| 34 |
const OPTION_CLEANUP_HISTORY = 'dbg_lv_cleanup_history'; |
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const OPTION_CLEANUP_NEXT_RUN = 'dbg_lv_cleanup_next_run'; |
| 36 |
|
| 37 |
/** |
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* Cleanup methods |
| 39 |
*/ |
| 40 |
const METHOD_TRUNCATE_KEEP_LAST = 'keep_last'; |
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const METHOD_CLEAR_FILE = 'clear'; |
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const METHOD_ARCHIVE_AND_ROTATE = 'archive'; |
| 43 |
|
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/** |
| 45 |
* Validation constants for settings |
| 46 |
*/ |
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const DEFAULT_MAX_LOG_SIZE_MB = 50; // Default maximum log file size in megabytes |
| 48 |
const MIN_MAX_LOG_SIZE_MB = 1; // Minimum allowed max log size |
| 49 |
const MAX_MAX_LOG_SIZE_MB = 5000; // Maximum allowed max log size |
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const DEFAULT_RETENTION_PERCENT = 10; // Default percentage of log to keep when truncating |
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const MIN_RETENTION_PERCENT = 5; // Minimum retention percentage |
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const MAX_RETENTION_PERCENT = 50; // Maximum retention percentage |
| 53 |
|
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/** |
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* Backup rotation limits (for Archive & Rotate method) |
| 56 |
*/ |
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const MAX_BACKUPS_FREE = 5; // Maximum backup files for Free plan |
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const MAX_BACKUPS_PRO = 20; // Maximum backup files for Pro plan |
| 59 |
|
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/** |
| 61 |
* Constructor |
| 62 |
*/ |
| 63 |
public function __construct() |
| 64 |
{ |
| 65 |
$this->logModel = new LogModel(); |
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$this->logFilePath = $this->logModel->getLogFilePath(); |
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|
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// Get max log size from options (in MB), convert to bytes |
| 69 |
$max_size_mb = get_option(self::OPTION_MAX_LOG_SIZE, 50); |
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$this->maxLogSize = $max_size_mb * 1024 * 1024; // Convert MB to bytes |
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|
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// Get retention percentage (default 10%) |
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$retention_percent = get_option(self::OPTION_RETENTION_PERCENT, 10); |
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$this->retentionPercentage = $retention_percent / 100; |
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} |
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|
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/** |
| 78 |
* Main cleanup execution method |
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* |
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* Checks if cleanup is needed and executes it based on configured method |
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* |
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* @return array Array containing success status and message |
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*/ |
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public function executeCleanup() |
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{ |
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|
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// Check if file exists |
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if (! file_exists($this->logFilePath)) { |
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return [ |
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'success' => false, |
| 91 |
'message' => 'Log file does not exist: ' . $this->logFilePath, |
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]; |
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} |
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|
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// Check if file is readable and writable |
| 96 |
if (! is_readable($this->logFilePath) || ! is_writable($this->logFilePath)) { |
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return [ |
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'success' => false, |
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'message' => 'Log file is not readable or writable: ' . $this->logFilePath, |
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]; |
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} |
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|
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// Get current file size |
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$current_size = filesize($this->logFilePath); |
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|
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// Check if cleanup is needed |
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if ($current_size <= $this->maxLogSize) { |
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return [ |
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'success' => true, |
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'message' => __('Log file size is within limits. No cleanup needed.', 'debug-log-viewer'), |
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'size' => $current_size, |
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]; |
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} |
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|
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// Perform cleanup based on configured method |
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$cleanup_method = get_option(self::OPTION_CLEANUP_METHOD, self::METHOD_TRUNCATE_KEEP_LAST); |
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|
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switch ($cleanup_method) { |
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case self::METHOD_CLEAR_FILE: |
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$result = $this->clearLogFile(); |
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break; |
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|
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case self::METHOD_ARCHIVE_AND_ROTATE: |
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$result = $this->archiveAndRotate(); |
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break; |
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|
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case self::METHOD_TRUNCATE_KEEP_LAST: |
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default: |
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$result = $this->truncateKeepLast(); |
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break; |
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} |
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|
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// Update last cleanup metadata |
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if ($result['success']) { |
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update_option(self::OPTION_LAST_CLEANUP_TIME, current_time('mysql')); |
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update_option(self::OPTION_LAST_CLEANUP_SIZE, $current_size); |
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} |
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|
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return $result; |
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} |
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|
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/** |
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* Truncate the log file keeping only the last X% of data |
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* |
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* This method is memory-efficient and uses file streams with fseek |
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* to avoid loading the entire file into memory. |
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* |
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* @return array Result of the operation |
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*/ |
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private function truncateKeepLast() |
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{ |
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$current_size = filesize($this->logFilePath); |
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|
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// Calculate how much data to keep |
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$bytes_to_keep = (int) ($current_size * $this->retentionPercentage); |
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$start_offset = $current_size - $bytes_to_keep; |
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|
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// Open files for reading and writing |
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$source_handle = fopen($this->logFilePath, 'r'); |
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if (false === $source_handle) { |
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return array( |
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'success' => false, |
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'message' => 'Failed to open log file for reading', |
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); |
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} |
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|
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// Create temporary file |
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$temp_file = $this->logFilePath . '.tmp'; |
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$temp_handle = fopen($temp_file, 'w'); |
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|
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if (false === $temp_handle) { |
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fclose($source_handle); |
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return [ |
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'success' => false, |
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'message' => 'Failed to create temporary file', |
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]; |
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} |
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|
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// Seek to the position where we want to start keeping data |
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if (fseek($source_handle, $start_offset) !== 0) { |
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fclose($source_handle); |
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fclose($temp_handle); |
| 183 |
wp_delete_file($temp_file); |
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return [ |
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'success' => false, |
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'message' => 'Failed to seek in log file', |
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]; |
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} |
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|
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// Skip partial lines - find the next newline |
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$first_line = fgets($source_handle); |
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|
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// Write header indicating truncation |
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$truncation_notice = sprintf( |
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"[%s] === Log file truncated by Debug Log Viewer Auto-Cleanup ===\n", |
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gmdate('Y-m-d H:i:s') |
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); |
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fwrite($temp_handle, $truncation_notice); |
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|
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// Copy remaining data in chunks to avoid memory issues |
| 201 |
$chunk_size = 8192; // 8KB chunks |
| 202 |
$bytes_copied = 0; |
| 203 |
|
| 204 |
while (! feof($source_handle)) { |
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$chunk = fread($source_handle, $chunk_size); |
| 206 |
if (false === $chunk) { |
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break; |
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} |
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fwrite($temp_handle, $chunk); |
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$bytes_copied += strlen($chunk); |
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} |
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|
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// Close handles |
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fclose($source_handle); |
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fclose($temp_handle); |
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|
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// Replace original file with truncated version |
| 218 |
if (! rename($temp_file, $this->logFilePath)) { |
| 219 |
$delete_result = $this->logModel->deleteFile($temp_file); |
| 220 |
if (!$delete_result['success']) { |
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error_log('Debug Log Viewer: Failed to cleanup temp file: ' . $temp_file); |
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} |
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return [ |
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'success' => false, |
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'message' => 'Failed to replace log file with truncated version', |
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]; |
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} |
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|
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// Set proper permissions |
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$chmod_result = $this->logModel->setPermissions($this->logFilePath, 0644); |
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if (!$chmod_result['success']) { |
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// Log warning but don't fail the operation |
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error_log('Debug Log Viewer: ' . $chmod_result['message']); |
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} |
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|
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clearstatcache(true, $this->logFilePath); |
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|
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return [ |
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'success' => true, |
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'message' => 'Log file truncated successfully', |
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'old_size' => $current_size, |
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'new_size' => filesize($this->logFilePath), |
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'bytes_kept' => $bytes_copied, |
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'method' => 'truncateKeepLast', |
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'retention' => ($this->retentionPercentage * 100) . '%', |
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]; |
| 247 |
} |
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|
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/** |
| 250 |
* Clear the log file completely |
| 251 |
* |
| 252 |
* Most performance-efficient method for very large files |
| 253 |
* |
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* @return array Result of the operation |
| 255 |
*/ |
| 256 |
private function clearLogFile() |
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{ |
| 258 |
$current_size = filesize($this->logFilePath); |
| 259 |
|
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// Write header |
| 261 |
$header = sprintf( |
| 262 |
"[%s] === Log file cleared by Debug Log Viewer Auto-Cleanup ===\n", |
| 263 |
gmdate('Y-m-d H:i:s') |
| 264 |
); |
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|
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$write_result = $this->logModel->writeToFile($this->logFilePath, $header, false); |
| 267 |
|
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if (!$write_result['success']) { |
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return [ |
| 270 |
'success' => false, |
| 271 |
'message' => $write_result['message'], |
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]; |
| 273 |
} |
| 274 |
|
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// Set proper permissions |
| 276 |
$chmod_result = $this->logModel->setPermissions($this->logFilePath, 0644); |
| 277 |
if (!$chmod_result['success']) { |
| 278 |
// Log warning but don't fail the operation |
| 279 |
error_log('Debug Log Viewer: ' . $chmod_result['message']); |
| 280 |
} |
| 281 |
|
| 282 |
clearstatcache(true, $this->logFilePath); |
| 283 |
|
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return [ |
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'success' => true, |
| 286 |
'message' => 'Log file cleared successfully', |
| 287 |
'old_size' => $current_size, |
| 288 |
'new_size' => filesize($this->logFilePath), |
| 289 |
'method' => 'clear', |
| 290 |
]; |
| 291 |
} |
| 292 |
|
| 293 |
/** |
| 294 |
* Archive the current log and create a new empty one |
| 295 |
* |
| 296 |
* Creates a backup with timestamp before clearing the log. |
| 297 |
* Automatically rotates backups to prevent disk space bloat. |
| 298 |
* |
| 299 |
* @return array Result of the operation |
| 300 |
*/ |
| 301 |
private function archiveAndRotate() |
| 302 |
{ |
| 303 |
$current_size = filesize($this->logFilePath); |
| 304 |
|
| 305 |
// Cleanup old backups before creating new one |
| 306 |
$cleanup_result = $this->cleanupOldBackups(); |
| 307 |
if (! $cleanup_result['success']) { |
| 308 |
// Log warning but continue with archive |
| 309 |
error_log('Debug Log Viewer: Failed to cleanup old backups: ' . $cleanup_result['message']); |
| 310 |
} |
| 311 |
|
| 312 |
// Create archive filename with timestamp |
| 313 |
$archive_name = str_replace('.log', '', basename($this->logFilePath)); |
| 314 |
$archive_path = dirname($this->logFilePath) . '/' . $archive_name . '-' . gmdate('Y-m-d-His') . '.log'; |
| 315 |
|
| 316 |
// Copy current log to archive using safe method |
| 317 |
$copy_result = $this->logModel->copyFile($this->logFilePath, $archive_path); |
| 318 |
if (!$copy_result['success']) { |
| 319 |
return [ |
| 320 |
'success' => false, |
| 321 |
'message' => 'Failed to create archive: ' . $copy_result['message'], |
| 322 |
]; |
| 323 |
} |
| 324 |
|
| 325 |
// Now clear the original file |
| 326 |
$clear_result = $this->clearLogFile(); |
| 327 |
|
| 328 |
if (! $clear_result['success']) { |
| 329 |
// Cleanup archive if clear failed |
| 330 |
$delete_result = $this->logModel->deleteFile($archive_path); |
| 331 |
if (!$delete_result['success']) { |
| 332 |
error_log('Debug Log Viewer: Failed to cleanup archive after failed clear: ' . $archive_path); |
| 333 |
} |
| 334 |
return $clear_result; |
| 335 |
} |
| 336 |
|
| 337 |
clearstatcache(true, $this->logFilePath); |
| 338 |
|
| 339 |
$message = 'Log file archived and rotated successfully'; |
| 340 |
if (isset($cleanup_result['deleted_count']) && $cleanup_result['deleted_count'] > 0) { |
| 341 |
$message .= sprintf(' (Removed %d old backup(s))', $cleanup_result['deleted_count']); |
| 342 |
} |
| 343 |
|
| 344 |
return [ |
| 345 |
'success' => true, |
| 346 |
'message' => $message, |
| 347 |
'old_size' => $current_size, |
| 348 |
'new_size' => filesize($this->logFilePath), |
| 349 |
'archive_path' => $archive_path, |
| 350 |
'method' => 'archiveAndRotate', |
| 351 |
]; |
| 352 |
} |
| 353 |
|
| 354 |
/** |
| 355 |
* Cleanup old backup files to prevent disk space issues |
| 356 |
* |
| 357 |
* Keeps only the most recent N backups (5 for Free, 20 for Pro). |
| 358 |
* Only applies to Archive & Rotate method. |
| 359 |
* |
| 360 |
* @return array Result with success status and deleted count |
| 361 |
*/ |
| 362 |
private function cleanupOldBackups() |
| 363 |
{ |
| 364 |
// Determine the maximum number of backups allowed |
| 365 |
$is_premium = dbg_lv()->is_premium(); |
| 366 |
$max_backups = $is_premium ? self::MAX_BACKUPS_PRO : self::MAX_BACKUPS_FREE; |
| 367 |
|
| 368 |
// Get directory path |
| 369 |
$log_dir = dirname($this->logFilePath); |
| 370 |
$log_basename = str_replace('.log', '', basename($this->logFilePath)); |
| 371 |
|
| 372 |
// Find all backup files matching the pattern: debug-2024-02-24-*.log |
| 373 |
$pattern = $log_dir . '/' . $log_basename . '-????-??-??-??????.log'; |
| 374 |
$backup_files = glob($pattern); |
| 375 |
|
| 376 |
if (false === $backup_files || empty($backup_files)) { |
| 377 |
return [ |
| 378 |
'success' => true, |
| 379 |
'message' => 'No backups to cleanup', |
| 380 |
'deleted_count' => 0, |
| 381 |
]; |
| 382 |
} |
| 383 |
|
| 384 |
// Check if we need to cleanup |
| 385 |
if (count($backup_files) <= $max_backups) { |
| 386 |
return [ |
| 387 |
'success' => true, |
| 388 |
'message' => sprintf('Backup count (%d) within limit (%d)', count($backup_files), $max_backups), |
| 389 |
'deleted_count' => 0, |
| 390 |
]; |
| 391 |
} |
| 392 |
|
| 393 |
// Sort by modification time (oldest first) |
| 394 |
usort($backup_files, function ($a, $b) { |
| 395 |
return filemtime($a) - filemtime($b); |
| 396 |
}); |
| 397 |
|
| 398 |
// Calculate how many files to delete |
| 399 |
$files_to_delete = array_slice($backup_files, 0, count($backup_files) - $max_backups); |
| 400 |
$deleted_count = 0; |
| 401 |
$errors = []; |
| 402 |
|
| 403 |
// Delete oldest backups |
| 404 |
foreach ($files_to_delete as $file) { |
| 405 |
if (file_exists($file)) { |
| 406 |
$delete_result = $this->logModel->deleteFile($file); |
| 407 |
if ($delete_result['success']) { |
| 408 |
$deleted_count++; |
| 409 |
} else { |
| 410 |
$errors[] = basename($file) . ': ' . $delete_result['message']; |
| 411 |
} |
| 412 |
} |
| 413 |
} |
| 414 |
|
| 415 |
if (! empty($errors)) { |
| 416 |
return [ |
| 417 |
'success' => false, |
| 418 |
'message' => sprintf('Failed to delete %d backup file(s)', count($errors)), |
| 419 |
'deleted_count' => $deleted_count, |
| 420 |
'errors' => $errors, |
| 421 |
]; |
| 422 |
} |
| 423 |
|
| 424 |
return [ |
| 425 |
'success' => true, |
| 426 |
'message' => sprintf('Successfully deleted %d old backup(s)', $deleted_count), |
| 427 |
'deleted_count' => $deleted_count, |
| 428 |
]; |
| 429 |
} |
| 430 |
|
| 431 |
/** |
| 432 |
* Get cleanup statistics for display |
| 433 |
* |
| 434 |
* @return array Statistics about cleanup operations |
| 435 |
*/ |
| 436 |
public function get_cleanup_stats() |
| 437 |
{ |
| 438 |
$current_size = 0; |
| 439 |
if (file_exists($this->logFilePath)) { |
| 440 |
$current_size = filesize($this->logFilePath); |
| 441 |
} |
| 442 |
|
| 443 |
return [ |
| 444 |
'enabled' => get_option(self::OPTION_CLEANUP_ENABLED, false), |
| 445 |
'max_size_mb' => get_option(self::OPTION_MAX_LOG_SIZE, 50), |
| 446 |
'max_size_bytes' => $this->maxLogSize, |
| 447 |
'current_size_bytes' => $current_size, |
| 448 |
'current_size_mb' => round($current_size / 1024 / 1024, 2), |
| 449 |
'percentage_used' => $this->maxLogSize > 0 ? round(($current_size / $this->maxLogSize) * 100, 2) : 0, |
| 450 |
'cleanup_method' => get_option(self::OPTION_CLEANUP_METHOD, self::METHOD_TRUNCATE_KEEP_LAST), |
| 451 |
'retention_percentage' => get_option(self::OPTION_RETENTION_PERCENT, 10), |
| 452 |
'email_notifications' => get_option(self::OPTION_CLEANUP_NOTIFICATIONS, false), |
| 453 |
]; |
| 454 |
} |
| 455 |
|
| 456 |
/** |
| 457 |
* Check if cleanup is needed (for manual trigger or preview) |
| 458 |
* |
| 459 |
* @return bool True if cleanup is needed |
| 460 |
*/ |
| 461 |
public function is_cleanup_needed() |
| 462 |
{ |
| 463 |
if (! file_exists($this->logFilePath)) { |
| 464 |
return false; |
| 465 |
} |
| 466 |
|
| 467 |
$current_size = filesize($this->logFilePath); |
| 468 |
return $current_size > $this->maxLogSize; |
| 469 |
} |
| 470 |
|
| 471 |
/** |
| 472 |
* Validate and sanitize cleanup settings |
| 473 |
* |
| 474 |
* @param array $settings Settings to validate |
| 475 |
* @return array Validated settings |
| 476 |
*/ |
| 477 |
public static function validate_settings($settings) |
| 478 |
{ |
| 479 |
$validated = []; |
| 480 |
$is_premium = dbg_lv()->is_premium(); |
| 481 |
|
| 482 |
// Validate max log size (1MB - 5000MB) |
| 483 |
// Free: Fixed at 50MB, Pro: Configurable 1-5000MB |
| 484 |
if (isset($settings['maxLogSize'])) { |
| 485 |
if ($is_premium) { |
| 486 |
$max_size = absint($settings['maxLogSize']); |
| 487 |
$validated['maxLogSize'] = max(self::MIN_MAX_LOG_SIZE_MB, min(self::MAX_MAX_LOG_SIZE_MB, $max_size)); |
| 488 |
} else { |
| 489 |
// Free plan: Force to default 50MB |
| 490 |
$validated['maxLogSize'] = self::DEFAULT_MAX_LOG_SIZE_MB; |
| 491 |
} |
| 492 |
} |
| 493 |
|
| 494 |
// Validate cleanup enabled |
| 495 |
if (isset($settings['cleanupEnabled'])) { |
| 496 |
$validated['cleanupEnabled'] = (bool) $settings['cleanupEnabled']; |
| 497 |
} |
| 498 |
|
| 499 |
// Validate cleanup method |
| 500 |
// Free: Only Truncate, Pro: All methods |
| 501 |
if (isset($settings['cleanupMethod'])) { |
| 502 |
if ($is_premium) { |
| 503 |
$allowed_methods = array( |
| 504 |
self::METHOD_TRUNCATE_KEEP_LAST, |
| 505 |
self::METHOD_CLEAR_FILE, |
| 506 |
self::METHOD_ARCHIVE_AND_ROTATE, |
| 507 |
); |
| 508 |
|
| 509 |
$validated['cleanupMethod'] = in_array($settings['cleanupMethod'], $allowed_methods, true) |
| 510 |
? $settings['cleanupMethod'] |
| 511 |
: self::METHOD_TRUNCATE_KEEP_LAST; |
| 512 |
} else { |
| 513 |
// Free plan: Force to Truncate method only |
| 514 |
$validated['cleanupMethod'] = self::METHOD_TRUNCATE_KEEP_LAST; |
| 515 |
} |
| 516 |
} |
| 517 |
|
| 518 |
// Validate retention percentage (5% - 50%) |
| 519 |
// Free: Fixed at 10%, Pro: Configurable 5-50% |
| 520 |
if (isset($settings['retentionPercentage'])) { |
| 521 |
if ($is_premium) { |
| 522 |
$retention = absint($settings['retentionPercentage']); |
| 523 |
$validated['retentionPercentage'] = max(self::MIN_RETENTION_PERCENT, min(self::MAX_RETENTION_PERCENT, $retention)); |
| 524 |
} else { |
| 525 |
// Free plan: Force to default 10% |
| 526 |
$validated['retentionPercentage'] = self::DEFAULT_RETENTION_PERCENT; |
| 527 |
} |
| 528 |
} |
| 529 |
|
| 530 |
// Validate email notifications (Pro only) |
| 531 |
if (isset($settings['emailNotifications'])) { |
| 532 |
$validated['emailNotifications'] = $is_premium ? (bool) $settings['emailNotifications'] : false; |
| 533 |
} |
| 534 |
|
| 535 |
return $validated; |
| 536 |
} |
| 537 |
} |
| 538 |
|
