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};
9#[cfg(feature = "serialization")]
10use serde::{Deserialize, Serialize};
11use std::collections::HashMap;
12use std::time::{Duration, Instant};
13
14/// Adaptive task scheduler
15#[derive(Debug)]
16pub struct AdaptiveTaskScheduler {
17    /// Scheduling algorithm
18    #[allow(dead_code)]
19    algorithm: SchedulingAlgorithm,
20    /// Task queue
21    task_queue: TaskQueue,
22    /// Execution history
23    #[allow(dead_code)]
24    execution_history: ExecutionHistory,
25    /// Performance predictor
26    #[allow(dead_code)]
27    performance_predictor: PerformancePredictor,
28    /// Scheduler configuration
29    #[allow(dead_code)]
30    config: SchedulerConfig,
31}
32
33/// Scheduling algorithms
34#[derive(Debug, Clone)]
35pub enum SchedulingAlgorithm {
36    RoundRobin,
37    LeastLoaded,
38    PerformanceBased,
39    LocalityAware,
40    CostOptimized,
41    DeadlineAware,
42    MLGuided,
43    HybridAdaptive,
44}
45
46/// Task queue management
47#[derive(Debug)]
48pub struct TaskQueue {
49    /// Pending tasks
50    pub pending_tasks: Vec<DistributedTask>,
51    /// Running tasks
52    pub running_tasks: HashMap<TaskId, RunningTask>,
53    /// Completed tasks
54    #[allow(dead_code)]
55    completed_tasks: Vec<CompletedTask>,
56    /// Priority queues
57    #[allow(dead_code)]
58    priority_queues: HashMap<TaskPriority, Vec<DistributedTask>>,
59}
60
61/// Task identifier
62
63#[cfg_attr(feature = "serialization", derive(Serialize, Deserialize))]
64#[derive(Debug, Clone, Hash, PartialEq, Eq)]
65pub struct TaskId(pub String);
66
67/// Distributed task representation
68#[derive(Debug, Clone)]
69pub struct DistributedTask {
70    /// Task identifier
71    pub id: TaskId,
72    /// Task type
73    pub task_type: TaskType,
74    /// Input data
75    pub input_data: TaskData,
76    /// Input data (alias for backward compatibility)
77    pub data: TaskData,
78    /// Required resources
79    pub resource_requirements: ResourceRequirements,
80    /// Required resources (alias for backward compatibility)
81    pub resources: ResourceRequirements,
82    /// Expected duration
83    pub expected_duration: Duration,
84    /// Execution constraints
85    pub constraints: ExecutionConstraints,
86    /// Priority
87    pub priority: TaskPriority,
88    /// Deadline
89    pub deadline: Option<Instant>,
90    /// Dependencies
91    pub dependencies: Vec<TaskId>,
92    /// Metadata
93    pub metadata: TaskMetadata,
94    /// Requires checkpointing for fault tolerance
95    pub requires_checkpointing: bool,
96    /// Streaming output mode
97    pub streaming_output: bool,
98    /// Distribution strategy for the task
99    pub distribution_strategy: DistributionStrategy,
100    /// Fault tolerance settings
101    pub fault_tolerance: FaultToleranceLevel,
102    /// Maximum retries on failure
103    pub maxretries: u32,
104    /// Checkpoint interval
105    pub checkpoint_interval: Option<Duration>,
106}
107
108/// Task types
109#[cfg_attr(feature = "serialization", derive(Serialize, Deserialize))]
110#[derive(Debug, Clone)]
111pub enum TaskType {
112    MatrixOperation,
113    MatrixMultiplication,
114    DataProcessing,
115    SignalProcessing,
116    MachineLearning,
117    Simulation,
118    Optimization,
119    DataAnalysis,
120    Rendering,
121    Custom(String),
122}
123
124/// Task data
125#[cfg_attr(feature = "serialization", derive(Serialize, Deserialize))]
126#[derive(Debug, Clone)]
127pub struct TaskData {
128    /// Data payload
129    pub payload: Vec<u8>,
130    /// Data format
131    pub format: String,
132    /// Data size (bytes)
133    pub size_bytes: usize,
134    /// Compression used
135    pub compressed: bool,
136    /// Encryption used
137    pub encrypted: bool,
138}
139
140/// Resource requirements
141#[cfg_attr(feature = "serialization", derive(Serialize, Deserialize))]
142#[derive(Debug, Clone)]
143pub struct ResourceRequirements {
144    /// Minimum CPU cores
145    pub min_cpu_cores: u32,
146    /// Minimum memory (GB)
147    pub min_memory_gb: f64,
148    /// GPU required
149    pub gpu_required: bool,
150    /// Minimum GPU memory (GB)
151    pub min_gpu_memory_gb: Option<f64>,
152    /// Storage required (GB)
153    pub storage_required_gb: f64,
154    /// Network bandwidth (Mbps)
155    pub networkbandwidth_mbps: f64,
156    /// Special requirements
157    pub special_requirements: Vec<String>,
158}
159
160/// Execution constraints
161#[cfg_attr(feature = "serialization", derive(Serialize, Deserialize))]
162#[derive(Debug, Clone)]
163pub struct ExecutionConstraints {
164    /// Maximum execution time
165    pub maxexecution_time: Duration,
166    /// Preferred node types
167    pub preferred_node_types: Vec<String>,
168    /// Excluded nodes
169    pub excluded_nodes: Vec<NodeId>,
170    /// Locality preferences
171    pub locality_preferences: Vec<String>,
172    /// Security requirements
173    pub security_requirements: Vec<String>,
174}
175
176/// Task priority levels
177
178#[cfg_attr(feature = "serialization", derive(Serialize, Deserialize))]
179#[derive(Debug, Clone, PartialEq, Eq, Hash)]
180pub enum TaskPriority {
181    Critical,
182    High,
183    Normal,
184    Low,
185    Background,
186}
187
188/// Task metadata
189#[derive(Debug, Clone)]
190pub struct TaskMetadata {
191    /// Task name
192    pub name: String,
193    /// Creator
194    pub creator: String,
195    /// Creation time
196    pub created_at: Instant,
197    /// Tags
198    pub tags: Vec<String>,
199    /// Custom properties
200    pub properties: HashMap<String, String>,
201}
202
203/// Running task information
204#[derive(Debug, Clone)]
205pub struct RunningTask {
206    /// Task
207    pub task: DistributedTask,
208    /// Assigned node
209    pub assigned_node: NodeId,
210    /// Start time
211    pub start_time: Instant,
212    /// Progress (0.0..1.0)
213    pub progress: f64,
214    /// Current status
215    pub status: TaskStatus,
216    /// Resource usage
217    pub resource_usage: TaskResourceUsage,
218}
219
220/// Task status
221#[derive(Debug, Clone)]
222pub enum TaskStatus {
223    Queued,
224    Assigned,
225    Running,
226    Paused,
227    Completing,
228    Completed,
229    Failed,
230    Cancelled,
231}
232
233/// Task resource usage
234#[derive(Debug, Clone)]
235pub struct TaskResourceUsage {
236    /// CPU usage
237    pub cpu_usage: f64,
238    /// Memory usage (bytes)
239    pub memory_usage: usize,
240    /// GPU usage
241    pub gpu_usage: Option<f64>,
242    /// Network usage (bytes/sec)
243    pub network_usage: f64,
244    /// Storage usage (bytes)
245    pub storage_usage: usize,
246}
247
248/// Completed task information
249#[derive(Debug, Clone)]
250pub struct CompletedTask {
251    /// Task
252    pub task: DistributedTask,
253    /// Execution node
254    pub execution_node: NodeId,
255    /// Start time
256    pub start_time: Instant,
257    /// End time
258    pub end_time: Instant,
259    /// Final status
260    pub final_status: TaskStatus,
261    /// Result data
262    pub result_data: Option<TaskData>,
263    /// Performance metrics
264    pub performance_metrics: TaskPerformanceMetrics,
265    /// Error information
266    pub error_info: Option<TaskError>,
267}
268
269/// Task performance metrics
270#[derive(Debug, Clone)]
271pub struct TaskPerformanceMetrics {
272    /// Execution time
273    pub execution_time: Duration,
274    /// CPU time
275    pub cpu_time: Duration,
276    /// Memory peak usage
277    pub memory_peak: usize,
278    /// Network bytes transferred
279    pub network_bytes: u64,
280    /// Efficiency score
281    pub efficiency_score: f64,
282}
283
284/// Task error information
285#[derive(Debug, Clone)]
286pub struct TaskError {
287    /// Error code
288    pub errorcode: String,
289    /// Error message
290    pub message: String,
291    /// Error category
292    pub category: ErrorCategory,
293    /// Stack trace
294    pub stack_trace: Option<String>,
295    /// Recovery suggestions
296    pub recovery_suggestions: Vec<String>,
297}
298
299/// Error categories
300#[derive(Debug, Clone)]
301pub enum ErrorCategory {
302    ResourceExhausted,
303    NetworkFailure,
304    NodeFailure,
305    InvalidInput,
306    SecurityViolation,
307    TimeoutExpired,
308    UnknownError,
309}
310
311/// Execution history tracking
312#[derive(Debug)]
313pub struct ExecutionHistory {
314    /// Task execution records
315    #[allow(dead_code)]
316    records: Vec<ExecutionRecord>,
317    /// Performance trends
318    #[allow(dead_code)]
319    performance_trends: PerformanceTrends,
320    /// Resource utilization patterns
321    #[allow(dead_code)]
322    utilization_patterns: UtilizationPatterns,
323}
324
325/// Execution record
326#[derive(Debug, Clone)]
327pub struct ExecutionRecord {
328    /// Task type
329    pub task_type: TaskType,
330    /// Node capabilities used
331    pub node_capabilities: NodeCapabilities,
332    /// Execution time
333    pub execution_time: Duration,
334    /// Resource usage
335    pub resource_usage: TaskResourceUsage,
336    /// Success flag
337    pub success: bool,
338    /// Timestamp
339    pub timestamp: Instant,
340}
341
342/// Performance trends
343#[derive(Debug, Clone)]
344pub struct PerformanceTrends {
345    /// Average execution times by task type
346    pub avgexecution_times: HashMap<String, Duration>,
347    /// Success rates by node type
348    pub success_rates: HashMap<String, f64>,
349    /// Resource efficiency trends
350    pub efficiency_trends: Vec<EfficiencyDataPoint>,
351}
352
353/// Efficiency data point
354#[derive(Debug, Clone)]
355pub struct EfficiencyDataPoint {
356    /// Timestamp
357    pub timestamp: Instant,
358    /// Efficiency score
359    pub efficiency: f64,
360    /// Task type
361    pub task_type: TaskType,
362    /// Node type
363    pub node_type: String,
364}
365
366/// Resource utilization patterns
367#[derive(Debug, Clone)]
368pub struct UtilizationPatterns {
369    /// CPU utilization patterns
370    pub cpu_patterns: Vec<UtilizationPattern>,
371    /// Memory utilization patterns
372    pub memory_patterns: Vec<UtilizationPattern>,
373    /// Network utilization patterns
374    pub network_patterns: Vec<UtilizationPattern>,
375}
376
377/// Utilization pattern
378#[derive(Debug, Clone)]
379pub struct UtilizationPattern {
380    /// Pattern type
381    pub pattern_type: PatternType,
382    /// Time series data
383    pub data_points: Vec<DataPoint>,
384    /// Pattern confidence
385    pub confidence: f64,
386}
387
388/// Pattern types
389#[derive(Debug, Clone)]
390pub enum PatternType {
391    Constant,
392    Linear,
393    Exponential,
394    Periodic,
395    Irregular,
396}
397
398/// Data point
399#[derive(Debug, Clone)]
400pub struct DataPoint {
401    /// Timestamp
402    pub timestamp: Instant,
403    /// Value
404    pub value: f64,
405}
406
407/// Performance predictor
408#[derive(Debug)]
409pub struct PerformancePredictor {
410    /// Prediction models
411    #[allow(dead_code)]
412    models: HashMap<String, PredictionModel>,
413    /// Historical data
414    #[allow(dead_code)]
415    historical_data: Vec<ExecutionRecord>,
416    /// Prediction accuracy metrics
417    #[allow(dead_code)]
418    accuracy_metrics: AccuracyMetrics,
419}
420
421/// Prediction model
422#[derive(Debug, Clone)]
423pub struct PredictionModel {
424    /// Model type
425    pub model_type: ModelType,
426    /// Model parameters
427    pub parameters: Vec<f64>,
428    /// Training data size
429    pub training_size: usize,
430    /// Model accuracy
431    pub accuracy: f64,
432    /// Last update
433    pub last_updated: Instant,
434}
435
436/// Model types
437#[derive(Debug, Clone)]
438pub enum ModelType {
439    LinearRegression,
440    RandomForest,
441    NeuralNetwork,
442    SupportVectorMachine,
443    GradientBoosting,
444}
445
446/// Accuracy metrics
447#[derive(Debug, Clone)]
448pub struct AccuracyMetrics {
449    /// Mean absolute error
450    pub mean_absoluteerror: f64,
451    /// Root mean square error
452    pub root_mean_squareerror: f64,
453    /// R-squared
454    pub r_squared: f64,
455    /// Prediction confidence intervals
456    pub confidence_intervals: Vec<ConfidenceInterval>,
457}
458
459/// Confidence interval
460#[derive(Debug, Clone)]
461pub struct ConfidenceInterval {
462    /// Lower bound
463    pub lower: f64,
464    /// Upper bound
465    pub upper: f64,
466    /// Confidence level
467    pub confidence_level: f64,
468}
469
470/// Scheduler configuration
471#[derive(Debug, Clone)]
472pub struct SchedulerConfig {
473    /// Maximum concurrent tasks per node
474    pub max_concurrent_tasks: u32,
475    /// Task timeout multiplier
476    pub timeout_multiplier: f64,
477    /// Enable load balancing
478    pub enable_load_balancing: bool,
479    /// Enable locality optimization
480    pub enable_locality_optimization: bool,
481    /// Scheduling interval
482    pub scheduling_interval: Duration,
483}
484
485// Implementations
486impl AdaptiveTaskScheduler {
487    pub fn new(config: &DistributedComputingConfig) -> CoreResult<Self> {
488        Ok(Self {
489            algorithm: SchedulingAlgorithm::HybridAdaptive,
490            task_queue: TaskQueue::new(),
491            execution_history: ExecutionHistory::new(),
492            performance_predictor: PerformancePredictor::new()?,
493            config: SchedulerConfig {
494                max_concurrent_tasks: 10,
495                timeout_multiplier: 1.5,
496                enable_load_balancing: true,
497                enable_locality_optimization: true,
498                scheduling_interval: Duration::from_secs(1),
499            },
500        })
501    }
502
503    pub fn start(&mut self) -> CoreResult<()> {
504        println!("📅 Starting adaptive task scheduler...");
505        Ok(())
506    }
507
508    pub fn submit_task(&mut self, task: DistributedTask) -> CoreResult<TaskId> {
509        let taskid = task.id.clone();
510        self.task_queue.pending_tasks.push(task);
511        Ok(taskid)
512    }
513
514    pub fn get_task_status(&self, taskid: &TaskId) -> Option<TaskStatus> {
515        self.task_queue
516            .running_tasks
517            .get(taskid)
518            .map(|running_task| running_task.status.clone())
519    }
520
521    pub fn cancel_task(&self, _taskid: &TaskId) -> CoreResult<()> {
522        println!("❌ Cancelling task...");
523        Ok(())
524    }
525}
526
527impl Default for TaskQueue {
528    fn default() -> Self {
529        Self::new()
530    }
531}
532
533impl TaskQueue {
534    pub fn new() -> Self {
535        Self {
536            pending_tasks: Vec::new(),
537            running_tasks: HashMap::new(),
538            completed_tasks: Vec::new(),
539            priority_queues: HashMap::new(),
540        }
541    }
542}
543
544impl Default for ExecutionHistory {
545    fn default() -> Self {
546        Self::new()
547    }
548}
549
550impl ExecutionHistory {
551    pub fn new() -> Self {
552        Self {
553            records: Vec::new(),
554            performance_trends: PerformanceTrends {
555                avgexecution_times: HashMap::new(),
556                success_rates: HashMap::new(),
557                efficiency_trends: Vec::new(),
558            },
559            utilization_patterns: UtilizationPatterns {
560                cpu_patterns: Vec::new(),
561                memory_patterns: Vec::new(),
562                network_patterns: Vec::new(),
563            },
564        }
565    }
566}
567
568impl PerformancePredictor {
569    pub fn new() -> CoreResult<Self> {
570        Ok(Self {
571            models: HashMap::new(),
572            historical_data: Vec::new(),
573            accuracy_metrics: AccuracyMetrics {
574                mean_absoluteerror: 0.05,
575                root_mean_squareerror: 0.07,
576                r_squared: 0.92,
577                confidence_intervals: vec![ConfidenceInterval {
578                    lower: 0.8,
579                    upper: 1.2,
580                    confidence_level: 0.95,
581                }],
582            },
583        })
584    }
585}
scirs2_core/advanced_distributed_computing/scheduling.rs

scirs2_core/advanced_distributed_computing/
scheduling.rs
