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feat: Add comprehensive documentation suite and reorganize project structure

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- Created complete documentation in docs/ directory
- Added PROJECT_OVERVIEW.md with feature highlights and getting started guide
- Added ARCHITECTURE.md with system design and technical details
- Added SECURITY.md with comprehensive security implementation guide
- Added DEVELOPMENT.md with development workflows and best practices
- Added DEPLOYMENT.md with production deployment instructions
- Added API.md with complete REST API documentation
- Added CONTRIBUTING.md with contribution guidelines
- Added CHANGELOG.md with version history and migration notes
- Reorganized all documentation files into docs/ directory for better organization
- Updated README.md with proper documentation links and quick navigation
- Enhanced project structure with professional documentation standards
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SamiAhmed7777
2025-10-21 00:39:45 -07:00
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# Design Document - Enhanced with Comprehensive Logging
## Overview
The EasyStream platform design builds upon the existing PHP-based architecture to create a complete, production-ready video streaming platform. The system follows a modular MVC-like pattern with clear separation between core framework components, business logic modules, and presentation layers. **A key focus is on comprehensive logging that enables rapid error identification and resolution without extensive debugging.**
## Architecture
### High-Level Architecture
```mermaid
graph TB
subgraph "Client Layer"
WEB[Web Browser]
MOB[Mobile App/PWA]
API_CLIENT[API Clients]
end
subgraph "Load Balancer & Proxy"
CADDY[Caddy Server]
end
subgraph "Application Layer"
PHP[PHP-FPM 8.2]
WORKER[Queue Workers]
CRON[Cron Jobs]
end
subgraph "Logging & Monitoring"
LOGGER[VLogger System]
ALERTS[Alert Manager]
METRICS[Performance Metrics]
end
subgraph "Core Services"
DB[(MariaDB)]
REDIS[(Redis Cache)]
SRS[SRS Streaming]
end
subgraph "Storage"
FILES[File Storage]
HLS[HLS Segments]
RECORDINGS[Stream Recordings]
LOGS[Log Files]
end
WEB --> CADDY
MOB --> CADDY
API_CLIENT --> CADDY
CADDY --> PHP
PHP --> LOGGER
PHP --> DB
PHP --> REDIS
WORKER --> LOGGER
CRON --> LOGGER
LOGGER --> LOGS
LOGGER --> ALERTS
SRS --> HLS
SRS --> RECORDINGS
```
## Comprehensive Logging System Design
### 1. Multi-Level Logging Architecture
```php
// Enhanced VLogger with comprehensive context tracking
class VLogger {
const EMERGENCY = 0; // System is unusable
const ALERT = 1; // Action must be taken immediately
const CRITICAL = 2; // Critical conditions
const ERROR = 3; // Error conditions
const WARNING = 4; // Warning conditions
const NOTICE = 5; // Normal but significant condition
const INFO = 6; // Informational messages
const DEBUG = 7; // Debug-level messages
private $contextData = [];
public function __construct() {
$this->initializeContext();
}
private function initializeContext() {
$this->contextData = [
'request_id' => $this->generateRequestId(),
'session_id' => session_id(),
'user_id' => $_SESSION['user_id'] ?? null,
'ip_address' => $this->getRealIpAddress(),
'user_agent' => $_SERVER['HTTP_USER_AGENT'] ?? null,
'request_uri' => $_SERVER['REQUEST_URI'] ?? null,
'request_method' => $_SERVER['REQUEST_METHOD'] ?? null,
'timestamp' => microtime(true),
'memory_usage' => memory_get_usage(true),
'peak_memory' => memory_get_peak_usage(true)
];
}
public function logWithFullContext($level, $message, $additionalContext = []) {
$logEntry = [
'level' => $this->getLevelName($level),
'message' => $message,
'context' => array_merge($this->contextData, $additionalContext),
'backtrace' => $this->getCleanBacktrace(),
'server_info' => $this->getServerInfo(),
'performance' => $this->getPerformanceMetrics()
];
// Write to multiple destinations
$this->writeToFile($logEntry);
$this->writeToDatabase($logEntry);
$this->sendToMonitoring($logEntry);
// Send alerts for critical issues
if ($level <= self::ERROR) {
$this->sendAlert($logEntry);
}
}
}
```
### 2. Specialized Logging Categories
#### Database Operation Logging
```php
class VDatabase {
private $logger;
public function executeQuery($sql, $params = []) {
$startTime = microtime(true);
$queryId = uniqid('query_');
$this->logger->logDatabaseOperation('query_start', [
'query_id' => $queryId,
'sql' => $sql,
'params' => $this->sanitizeParams($params),
'caller' => $this->getCaller()
]);
try {
$result = $this->db->Execute($sql, $params);
$executionTime = microtime(true) - $startTime;
$this->logger->logDatabaseOperation('query_success', [
'query_id' => $queryId,
'execution_time' => $executionTime,
'rows_affected' => $result ? $result->RecordCount() : 0,
'memory_after' => memory_get_usage(true)
]);
// Alert on slow queries
if ($executionTime > 1.0) {
$this->logger->logPerformanceIssue('slow_query', [
'query_id' => $queryId,
'execution_time' => $executionTime,
'sql' => $sql
]);
}
return $result;
} catch (Exception $e) {
$this->logger->logDatabaseError('query_failed', [
'query_id' => $queryId,
'error' => $e->getMessage(),
'error_code' => $e->getCode(),
'sql' => $sql,
'params' => $this->sanitizeParams($params),
'execution_time' => microtime(true) - $startTime
]);
throw $e;
}
}
}
```
#### File Upload and Processing Logging
```php
class VContent {
public function uploadFile($file) {
$uploadId = uniqid('upload_');
$this->logger->logFileOperation('upload_start', [
'upload_id' => $uploadId,
'filename' => $file['name'],
'size' => $file['size'],
'type' => $file['type'],
'tmp_name' => $file['tmp_name'],
'user_id' => $_SESSION['user_id']
]);
// Validate file
$validation = $this->validateFile($file);
if (!$validation['valid']) {
$this->logger->logSecurityEvent('file_validation_failed', [
'upload_id' => $uploadId,
'filename' => $file['name'],
'validation_errors' => $validation['errors'],
'potential_threat' => $validation['threat_level']
]);
return false;
}
// Process upload
try {
$result = $this->processUpload($file, $uploadId);
$this->logger->logFileOperation('upload_success', [
'upload_id' => $uploadId,
'final_path' => $result['path'],
'processing_time' => $result['processing_time'],
'file_id' => $result['file_id']
]);
return $result;
} catch (Exception $e) {
$this->logger->logFileError('upload_failed', [
'upload_id' => $uploadId,
'error' => $e->getMessage(),
'trace' => $e->getTraceAsString(),
'file_info' => $file
]);
throw $e;
}
}
}
```
#### Security Event Logging
```php
class VSecurity {
public function validateCSRFToken($action, $token) {
$validationId = uniqid('csrf_');
$this->logger->logSecurityEvent('csrf_validation_attempt', [
'validation_id' => $validationId,
'action' => $action,
'token_provided' => substr($token, 0, 8) . '...',
'session_id' => session_id(),
'referer' => $_SERVER['HTTP_REFERER'] ?? null
]);
$isValid = $this->performCSRFValidation($action, $token);
if (!$isValid) {
$this->logger->logSecurityThreat('csrf_validation_failed', [
'validation_id' => $validationId,
'action' => $action,
'ip_address' => $this->getRealIpAddress(),
'user_agent' => $_SERVER['HTTP_USER_AGENT'],
'potential_attack' => true,
'risk_level' => 'HIGH'
]);
// Increment security violation counter
$this->incrementSecurityViolations();
}
return $isValid;
}
public function checkRateLimit($key, $maxAttempts, $windowSeconds) {
$attempts = $this->getCurrentAttempts($key, $windowSeconds);
$this->logger->logSecurityEvent('rate_limit_check', [
'key' => $key,
'current_attempts' => $attempts,
'max_attempts' => $maxAttempts,
'window_seconds' => $windowSeconds,
'ip_address' => $this->getRealIpAddress()
]);
if ($attempts >= $maxAttempts) {
$this->logger->logSecurityThreat('rate_limit_exceeded', [
'key' => $key,
'attempts' => $attempts,
'max_attempts' => $maxAttempts,
'ip_address' => $this->getRealIpAddress(),
'action_taken' => 'REQUEST_BLOCKED'
]);
return false;
}
return true;
}
}
```
### 3. Performance Monitoring and Metrics
```php
class VPerformanceMonitor {
private $metrics = [];
private $startTime;
public function startRequest() {
$this->startTime = microtime(true);
$this->metrics = [
'start_memory' => memory_get_usage(true),
'start_time' => $this->startTime,
'db_queries' => 0,
'cache_hits' => 0,
'cache_misses' => 0,
'file_operations' => 0
];
}
public function endRequest() {
$endTime = microtime(true);
$totalTime = $endTime - $this->startTime;
$this->metrics['end_time'] = $endTime;
$this->metrics['total_time'] = $totalTime;
$this->metrics['end_memory'] = memory_get_usage(true);
$this->metrics['peak_memory'] = memory_get_peak_usage(true);
$this->metrics['memory_used'] = $this->metrics['end_memory'] - $this->metrics['start_memory'];
$this->logger->logPerformanceMetrics('request_completed', $this->metrics);
// Alert on performance issues
if ($totalTime > 5.0) {
$this->logger->logPerformanceIssue('slow_request', [
'total_time' => $totalTime,
'memory_used' => $this->metrics['memory_used'],
'db_queries' => $this->metrics['db_queries'],
'uri' => $_SERVER['REQUEST_URI']
]);
}
}
}
```
### 4. Streaming and Video Processing Logging
```php
class VStreaming {
public function startStream($streamKey) {
$streamId = uniqid('stream_');
$this->logger->logStreamingEvent('stream_start_attempt', [
'stream_id' => $streamId,
'stream_key' => substr($streamKey, 0, 8) . '...',
'user_id' => $_SESSION['user_id'],
'rtmp_server' => $this->getRTMPServerInfo(),
'expected_hls_path' => $this->getHLSPath($streamKey)
]);
try {
$result = $this->initializeStream($streamKey);
$this->logger->logStreamingEvent('stream_started', [
'stream_id' => $streamId,
'stream_key' => substr($streamKey, 0, 8) . '...',
'hls_playlist' => $result['hls_playlist'],
'rtmp_url' => $result['rtmp_url'],
'initialization_time' => $result['init_time']
]);
return $result;
} catch (Exception $e) {
$this->logger->logStreamingError('stream_start_failed', [
'stream_id' => $streamId,
'error' => $e->getMessage(),
'srs_status' => $this->getSRSStatus(),
'disk_space' => $this->getDiskSpace(),
'system_load' => sys_getloadavg()
]);
throw $e;
}
}
public function processVideo($videoId) {
$processingId = uniqid('process_');
$this->logger->logVideoProcessing('processing_start', [
'processing_id' => $processingId,
'video_id' => $videoId,
'input_file' => $this->getVideoPath($videoId),
'target_formats' => $this->getTargetFormats(),
'ffmpeg_version' => $this->getFFmpegVersion()
]);
$startTime = microtime(true);
try {
$result = $this->executeVideoProcessing($videoId);
$processingTime = microtime(true) - $startTime;
$this->logger->logVideoProcessing('processing_completed', [
'processing_id' => $processingId,
'video_id' => $videoId,
'processing_time' => $processingTime,
'output_files' => $result['output_files'],
'file_sizes' => $result['file_sizes'],
'quality_levels' => $result['quality_levels']
]);
return $result;
} catch (Exception $e) {
$this->logger->logVideoProcessingError('processing_failed', [
'processing_id' => $processingId,
'video_id' => $videoId,
'error' => $e->getMessage(),
'ffmpeg_output' => $this->getLastFFmpegOutput(),
'system_resources' => $this->getSystemResources(),
'processing_time' => microtime(true) - $startTime
]);
throw $e;
}
}
}
```
### 5. Log Analysis and Alerting System
```php
class VLogAnalyzer {
public function analyzeErrorPatterns() {
// Analyze recent errors for patterns
$recentErrors = $this->getRecentErrors(3600); // Last hour
$patterns = [
'database_connection_failures' => 0,
'file_upload_failures' => 0,
'security_violations' => 0,
'performance_issues' => 0,
'streaming_failures' => 0
];
foreach ($recentErrors as $error) {
$this->categorizeError($error, $patterns);
}
// Send alerts if thresholds exceeded
foreach ($patterns as $pattern => $count) {
if ($count > $this->getThreshold($pattern)) {
$this->sendPatternAlert($pattern, $count, $recentErrors);
}
}
}
public function generateDiagnosticReport($errorId) {
$error = $this->getErrorById($errorId);
return [
'error_details' => $error,
'related_events' => $this->getRelatedEvents($error),
'system_state' => $this->getSystemStateAtTime($error['timestamp']),
'user_actions' => $this->getUserActionsBeforeError($error),
'similar_errors' => $this->findSimilarErrors($error),
'suggested_fixes' => $this->getSuggestedFixes($error),
'impact_assessment' => $this->assessErrorImpact($error)
];
}
}
```
### 6. Real-time Log Monitoring Dashboard
```php
class VLogDashboard {
public function getRealtimeMetrics() {
return [
'current_errors' => $this->getCurrentErrorCount(),
'performance_metrics' => $this->getCurrentPerformanceMetrics(),
'security_events' => $this->getRecentSecurityEvents(),
'system_health' => $this->getSystemHealthStatus(),
'active_streams' => $this->getActiveStreamCount(),
'processing_queue' => $this->getProcessingQueueStatus(),
'error_trends' => $this->getErrorTrends(),
'top_errors' => $this->getTopErrors()
];
}
public function getErrorDetails($errorId) {
$error = $this->getErrorById($errorId);
return [
'error' => $error,
'context' => $this->getFullContext($error),
'timeline' => $this->getErrorTimeline($error),
'affected_users' => $this->getAffectedUsers($error),
'resolution_steps' => $this->getResolutionSteps($error),
'prevention_measures' => $this->getPreventionMeasures($error)
];
}
}
```
This comprehensive logging system provides:
- **Immediate Error Identification**: Every operation is logged with full context
- **Performance Monitoring**: Real-time performance metrics and alerts
- **Security Tracking**: Complete audit trail of security events
- **Diagnostic Information**: Rich context for quick problem resolution
- **Pattern Recognition**: Automated analysis of error patterns
- **Proactive Alerting**: Immediate notifications for critical issues
- **Historical Analysis**: Trend analysis and prevention insights
**Does this enhanced design with comprehensive logging meet your expectations for quickly identifying and resolving issues?**