scirs2_core/advanced_distributed_computing/
scheduling.rs

1//! Task scheduling and execution management
2//!
3//! This module handles adaptive task scheduling, queue management, execution history,
4//! and performance prediction for the distributed computing framework.
5
6use super::cluster::{NodeCapabilities, NodeId};
7use super::types::{DistributedComputingConfig, DistributionStrategy, FaultToleranceLevel};
8use crate::error::{CoreError, CoreResult};
9use serde::{Deserialize, Serialize};
10use std::collections::HashMap;
11use std::time::{Duration, Instant};
12
13/// Adaptive task scheduler
14#[derive(Debug)]
15pub struct AdaptiveTaskScheduler {
16    /// Scheduling algorithm
17    #[allow(dead_code)]
18    algorithm: SchedulingAlgorithm,
19    /// Task queue
20    task_queue: TaskQueue,
21    /// Execution history
22    #[allow(dead_code)]
23    execution_history: ExecutionHistory,
24    /// Performance predictor
25    #[allow(dead_code)]
26    performance_predictor: PerformancePredictor,
27    /// Scheduler configuration
28    #[allow(dead_code)]
29    config: SchedulerConfig,
30}
31
32/// Scheduling algorithms
33#[derive(Debug, Clone)]
34pub enum SchedulingAlgorithm {
35    RoundRobin,
36    LeastLoaded,
37    PerformanceBased,
38    LocalityAware,
39    CostOptimized,
40    DeadlineAware,
41    MLGuided,
42    HybridAdaptive,
43}
44
45/// Task queue management
46#[derive(Debug)]
47pub struct TaskQueue {
48    /// Pending tasks
49    pub pending_tasks: Vec<DistributedTask>,
50    /// Running tasks
51    pub running_tasks: HashMap<TaskId, RunningTask>,
52    /// Completed tasks
53    #[allow(dead_code)]
54    completed_tasks: Vec<CompletedTask>,
55    /// Priority queues
56    #[allow(dead_code)]
57    priority_queues: HashMap<TaskPriority, Vec<DistributedTask>>,
58}
59
60/// Task identifier
61#[derive(Debug, Clone, Hash, PartialEq, Eq, Serialize, Deserialize)]
62pub struct TaskId(pub String);
63
64/// Distributed task representation
65#[derive(Debug, Clone)]
66pub struct DistributedTask {
67    /// Task identifier
68    pub id: TaskId,
69    /// Task type
70    pub task_type: TaskType,
71    /// Input data
72    pub input_data: TaskData,
73    /// Input data (alias for backward compatibility)
74    pub data: TaskData,
75    /// Required resources
76    pub resource_requirements: ResourceRequirements,
77    /// Required resources (alias for backward compatibility)
78    pub resources: ResourceRequirements,
79    /// Expected duration
80    pub expected_duration: Duration,
81    /// Execution constraints
82    pub constraints: ExecutionConstraints,
83    /// Priority
84    pub priority: TaskPriority,
85    /// Deadline
86    pub deadline: Option<Instant>,
87    /// Dependencies
88    pub dependencies: Vec<TaskId>,
89    /// Metadata
90    pub metadata: TaskMetadata,
91    /// Requires checkpointing for fault tolerance
92    pub requires_checkpointing: bool,
93    /// Streaming output mode
94    pub streaming_output: bool,
95    /// Distribution strategy for the task
96    pub distribution_strategy: DistributionStrategy,
97    /// Fault tolerance settings
98    pub fault_tolerance: FaultToleranceLevel,
99    /// Maximum retries on failure
100    pub maxretries: u32,
101    /// Checkpoint interval
102    pub checkpoint_interval: Option<Duration>,
103}
104
105/// Task types
106#[derive(Debug, Clone, Serialize, Deserialize)]
107pub enum TaskType {
108    MatrixOperation,
109    MatrixMultiplication,
110    DataProcessing,
111    SignalProcessing,
112    MachineLearning,
113    Simulation,
114    Optimization,
115    DataAnalysis,
116    Rendering,
117    Custom(String),
118}
119
120/// Task data
121#[derive(Debug, Clone, Serialize, Deserialize)]
122pub struct TaskData {
123    /// Data payload
124    pub payload: Vec<u8>,
125    /// Data format
126    pub format: String,
127    /// Data size (bytes)
128    pub size_bytes: usize,
129    /// Compression used
130    pub compressed: bool,
131    /// Encryption used
132    pub encrypted: bool,
133}
134
135/// Resource requirements
136#[derive(Debug, Clone, Serialize, Deserialize)]
137pub struct ResourceRequirements {
138    /// Minimum CPU cores
139    pub min_cpu_cores: u32,
140    /// Minimum memory (GB)
141    pub min_memory_gb: f64,
142    /// GPU required
143    pub gpu_required: bool,
144    /// Minimum GPU memory (GB)
145    pub min_gpu_memory_gb: Option<f64>,
146    /// Storage required (GB)
147    pub storage_required_gb: f64,
148    /// Network bandwidth (Mbps)
149    pub networkbandwidth_mbps: f64,
150    /// Special requirements
151    pub special_requirements: Vec<String>,
152}
153
154/// Execution constraints
155#[derive(Debug, Clone, Serialize, Deserialize)]
156pub struct ExecutionConstraints {
157    /// Maximum execution time
158    pub maxexecution_time: Duration,
159    /// Preferred node types
160    pub preferred_node_types: Vec<String>,
161    /// Excluded nodes
162    pub excluded_nodes: Vec<NodeId>,
163    /// Locality preferences
164    pub locality_preferences: Vec<String>,
165    /// Security requirements
166    pub security_requirements: Vec<String>,
167}
168
169/// Task priority levels
170#[derive(Debug, Clone, PartialEq, Eq, Hash, Serialize, Deserialize)]
171pub enum TaskPriority {
172    Critical,
173    High,
174    Normal,
175    Low,
176    Background,
177}
178
179/// Task metadata
180#[derive(Debug, Clone)]
181pub struct TaskMetadata {
182    /// Task name
183    pub name: String,
184    /// Creator
185    pub creator: String,
186    /// Creation time
187    pub created_at: Instant,
188    /// Tags
189    pub tags: Vec<String>,
190    /// Custom properties
191    pub properties: HashMap<String, String>,
192}
193
194/// Running task information
195#[derive(Debug, Clone)]
196pub struct RunningTask {
197    /// Task
198    pub task: DistributedTask,
199    /// Assigned node
200    pub assigned_node: NodeId,
201    /// Start time
202    pub start_time: Instant,
203    /// Progress (0.0..1.0)
204    pub progress: f64,
205    /// Current status
206    pub status: TaskStatus,
207    /// Resource usage
208    pub resource_usage: TaskResourceUsage,
209}
210
211/// Task status
212#[derive(Debug, Clone)]
213pub enum TaskStatus {
214    Queued,
215    Assigned,
216    Running,
217    Paused,
218    Completing,
219    Completed,
220    Failed,
221    Cancelled,
222}
223
224/// Task resource usage
225#[derive(Debug, Clone)]
226pub struct TaskResourceUsage {
227    /// CPU usage
228    pub cpu_usage: f64,
229    /// Memory usage (bytes)
230    pub memory_usage: usize,
231    /// GPU usage
232    pub gpu_usage: Option<f64>,
233    /// Network usage (bytes/sec)
234    pub network_usage: f64,
235    /// Storage usage (bytes)
236    pub storage_usage: usize,
237}
238
239/// Completed task information
240#[derive(Debug, Clone)]
241pub struct CompletedTask {
242    /// Task
243    pub task: DistributedTask,
244    /// Execution node
245    pub execution_node: NodeId,
246    /// Start time
247    pub start_time: Instant,
248    /// End time
249    pub end_time: Instant,
250    /// Final status
251    pub final_status: TaskStatus,
252    /// Result data
253    pub result_data: Option<TaskData>,
254    /// Performance metrics
255    pub performance_metrics: TaskPerformanceMetrics,
256    /// Error information
257    pub error_info: Option<TaskError>,
258}
259
260/// Task performance metrics
261#[derive(Debug, Clone)]
262pub struct TaskPerformanceMetrics {
263    /// Execution time
264    pub execution_time: Duration,
265    /// CPU time
266    pub cpu_time: Duration,
267    /// Memory peak usage
268    pub memory_peak: usize,
269    /// Network bytes transferred
270    pub network_bytes: u64,
271    /// Efficiency score
272    pub efficiency_score: f64,
273}
274
275/// Task error information
276#[derive(Debug, Clone)]
277pub struct TaskError {
278    /// Error code
279    pub errorcode: String,
280    /// Error message
281    pub message: String,
282    /// Error category
283    pub category: ErrorCategory,
284    /// Stack trace
285    pub stack_trace: Option<String>,
286    /// Recovery suggestions
287    pub recovery_suggestions: Vec<String>,
288}
289
290/// Error categories
291#[derive(Debug, Clone)]
292pub enum ErrorCategory {
293    ResourceExhausted,
294    NetworkFailure,
295    NodeFailure,
296    InvalidInput,
297    SecurityViolation,
298    TimeoutExpired,
299    UnknownError,
300}
301
302/// Execution history tracking
303#[derive(Debug)]
304pub struct ExecutionHistory {
305    /// Task execution records
306    #[allow(dead_code)]
307    records: Vec<ExecutionRecord>,
308    /// Performance trends
309    #[allow(dead_code)]
310    performance_trends: PerformanceTrends,
311    /// Resource utilization patterns
312    #[allow(dead_code)]
313    utilization_patterns: UtilizationPatterns,
314}
315
316/// Execution record
317#[derive(Debug, Clone)]
318pub struct ExecutionRecord {
319    /// Task type
320    pub task_type: TaskType,
321    /// Node capabilities used
322    pub node_capabilities: NodeCapabilities,
323    /// Execution time
324    pub execution_time: Duration,
325    /// Resource usage
326    pub resource_usage: TaskResourceUsage,
327    /// Success flag
328    pub success: bool,
329    /// Timestamp
330    pub timestamp: Instant,
331}
332
333/// Performance trends
334#[derive(Debug, Clone)]
335pub struct PerformanceTrends {
336    /// Average execution times by task type
337    pub avgexecution_times: HashMap<String, Duration>,
338    /// Success rates by node type
339    pub success_rates: HashMap<String, f64>,
340    /// Resource efficiency trends
341    pub efficiency_trends: Vec<EfficiencyDataPoint>,
342}
343
344/// Efficiency data point
345#[derive(Debug, Clone)]
346pub struct EfficiencyDataPoint {
347    /// Timestamp
348    pub timestamp: Instant,
349    /// Efficiency score
350    pub efficiency: f64,
351    /// Task type
352    pub task_type: TaskType,
353    /// Node type
354    pub node_type: String,
355}
356
357/// Resource utilization patterns
358#[derive(Debug, Clone)]
359pub struct UtilizationPatterns {
360    /// CPU utilization patterns
361    pub cpu_patterns: Vec<UtilizationPattern>,
362    /// Memory utilization patterns
363    pub memory_patterns: Vec<UtilizationPattern>,
364    /// Network utilization patterns
365    pub network_patterns: Vec<UtilizationPattern>,
366}
367
368/// Utilization pattern
369#[derive(Debug, Clone)]
370pub struct UtilizationPattern {
371    /// Pattern type
372    pub pattern_type: PatternType,
373    /// Time series data
374    pub data_points: Vec<DataPoint>,
375    /// Pattern confidence
376    pub confidence: f64,
377}
378
379/// Pattern types
380#[derive(Debug, Clone)]
381pub enum PatternType {
382    Constant,
383    Linear,
384    Exponential,
385    Periodic,
386    Irregular,
387}
388
389/// Data point
390#[derive(Debug, Clone)]
391pub struct DataPoint {
392    /// Timestamp
393    pub timestamp: Instant,
394    /// Value
395    pub value: f64,
396}
397
398/// Performance predictor
399#[derive(Debug)]
400pub struct PerformancePredictor {
401    /// Prediction models
402    #[allow(dead_code)]
403    models: HashMap<String, PredictionModel>,
404    /// Historical data
405    #[allow(dead_code)]
406    historical_data: Vec<ExecutionRecord>,
407    /// Prediction accuracy metrics
408    #[allow(dead_code)]
409    accuracy_metrics: AccuracyMetrics,
410}
411
412/// Prediction model
413#[derive(Debug, Clone)]
414pub struct PredictionModel {
415    /// Model type
416    pub model_type: ModelType,
417    /// Model parameters
418    pub parameters: Vec<f64>,
419    /// Training data size
420    pub training_size: usize,
421    /// Model accuracy
422    pub accuracy: f64,
423    /// Last update
424    pub last_updated: Instant,
425}
426
427/// Model types
428#[derive(Debug, Clone)]
429pub enum ModelType {
430    LinearRegression,
431    RandomForest,
432    NeuralNetwork,
433    SupportVectorMachine,
434    GradientBoosting,
435}
436
437/// Accuracy metrics
438#[derive(Debug, Clone)]
439pub struct AccuracyMetrics {
440    /// Mean absolute error
441    pub mean_absoluteerror: f64,
442    /// Root mean square error
443    pub root_mean_squareerror: f64,
444    /// R-squared
445    pub r_squared: f64,
446    /// Prediction confidence intervals
447    pub confidence_intervals: Vec<ConfidenceInterval>,
448}
449
450/// Confidence interval
451#[derive(Debug, Clone)]
452pub struct ConfidenceInterval {
453    /// Lower bound
454    pub lower: f64,
455    /// Upper bound
456    pub upper: f64,
457    /// Confidence level
458    pub confidence_level: f64,
459}
460
461/// Scheduler configuration
462#[derive(Debug, Clone)]
463pub struct SchedulerConfig {
464    /// Maximum concurrent tasks per node
465    pub max_concurrent_tasks: u32,
466    /// Task timeout multiplier
467    pub timeout_multiplier: f64,
468    /// Enable load balancing
469    pub enable_load_balancing: bool,
470    /// Enable locality optimization
471    pub enable_locality_optimization: bool,
472    /// Scheduling interval
473    pub scheduling_interval: Duration,
474}
475
476// Implementations
477impl AdaptiveTaskScheduler {
478    pub fn new(config: &DistributedComputingConfig) -> CoreResult<Self> {
479        Ok(Self {
480            algorithm: SchedulingAlgorithm::HybridAdaptive,
481            task_queue: TaskQueue::new(),
482            execution_history: ExecutionHistory::new(),
483            performance_predictor: PerformancePredictor::new()?,
484            config: SchedulerConfig {
485                max_concurrent_tasks: 10,
486                timeout_multiplier: 1.5,
487                enable_load_balancing: true,
488                enable_locality_optimization: true,
489                scheduling_interval: Duration::from_secs(1),
490            },
491        })
492    }
493
494    pub fn start(&mut self) -> CoreResult<()> {
495        println!("📅 Starting adaptive task scheduler...");
496        Ok(())
497    }
498
499    pub fn submit_task(&mut self, task: DistributedTask) -> CoreResult<TaskId> {
500        let taskid = task.id.clone();
501        self.task_queue.pending_tasks.push(task);
502        Ok(taskid)
503    }
504
505    pub fn get_task_status(&self, taskid: &TaskId) -> Option<TaskStatus> {
506        self.task_queue
507            .running_tasks
508            .get(taskid)
509            .map(|running_task| running_task.status.clone())
510    }
511
512    pub fn cancel_task(&self, _taskid: &TaskId) -> CoreResult<()> {
513        println!("❌ Cancelling task...");
514        Ok(())
515    }
516}
517
518impl Default for TaskQueue {
519    fn default() -> Self {
520        Self::new()
521    }
522}
523
524impl TaskQueue {
525    pub fn new() -> Self {
526        Self {
527            pending_tasks: Vec::new(),
528            running_tasks: HashMap::new(),
529            completed_tasks: Vec::new(),
530            priority_queues: HashMap::new(),
531        }
532    }
533}
534
535impl Default for ExecutionHistory {
536    fn default() -> Self {
537        Self::new()
538    }
539}
540
541impl ExecutionHistory {
542    pub fn new() -> Self {
543        Self {
544            records: Vec::new(),
545            performance_trends: PerformanceTrends {
546                avgexecution_times: HashMap::new(),
547                success_rates: HashMap::new(),
548                efficiency_trends: Vec::new(),
549            },
550            utilization_patterns: UtilizationPatterns {
551                cpu_patterns: Vec::new(),
552                memory_patterns: Vec::new(),
553                network_patterns: Vec::new(),
554            },
555        }
556    }
557}
558
559impl PerformancePredictor {
560    pub fn new() -> CoreResult<Self> {
561        Ok(Self {
562            models: HashMap::new(),
563            historical_data: Vec::new(),
564            accuracy_metrics: AccuracyMetrics {
565                mean_absoluteerror: 0.05,
566                root_mean_squareerror: 0.07,
567                r_squared: 0.92,
568                confidence_intervals: vec![ConfidenceInterval {
569                    lower: 0.8,
570                    upper: 1.2,
571                    confidence_level: 0.95,
572                }],
573            },
574        })
575    }
576}
scirs2_core/advanced_distributed_computing/scheduling.rs

scirs2_core/advanced_distributed_computing/
scheduling.rs
