sklears_compose/
advanced_debugging.rs

1//! Advanced Debugging Utilities for Pipeline Inspection
2//!
3//! This module provides sophisticated debugging tools for machine learning pipelines,
4//! including step-by-step execution, interactive debugging sessions, advanced profiling,
5//! and comprehensive pipeline state inspection capabilities.
6
7use sklears_core::{error::Result as SklResult, prelude::SklearsError};
8use std::collections::{HashMap, VecDeque};
9use std::fmt;
10use std::sync::{Arc, Mutex, RwLock};
11use std::time::{Duration, Instant, SystemTime};
12
13/// Advanced pipeline debugger with interactive capabilities
14pub struct AdvancedPipelineDebugger {
15    sessions: Arc<RwLock<HashMap<String, DebugSession>>>,
16    global_config: DebugConfig,
17    event_log: Arc<Mutex<VecDeque<DebugEvent>>>,
18    profiler: Arc<Mutex<AdvancedProfiler>>,
19}
20
21impl AdvancedPipelineDebugger {
22    #[must_use]
23    pub fn new(config: DebugConfig) -> Self {
24        Self {
25            sessions: Arc::new(RwLock::new(HashMap::new())),
26            global_config: config,
27            event_log: Arc::new(Mutex::new(VecDeque::new())),
28            profiler: Arc::new(Mutex::new(AdvancedProfiler::new())),
29        }
30    }
31
32    /// Start a new debugging session
33    pub fn start_session(
34        &self,
35        session_id: String,
36        pipeline_id: String,
37    ) -> SklResult<DebugSessionHandle> {
38        let session =
39            DebugSession::new(session_id.clone(), pipeline_id, self.global_config.clone());
40
41        {
42            let mut sessions = self.sessions.write().unwrap();
43            sessions.insert(session_id.clone(), session);
44        }
45
46        self.log_event(DebugEvent::SessionStarted {
47            session_id: session_id.clone(),
48            timestamp: SystemTime::now(),
49        })?;
50
51        Ok(DebugSessionHandle {
52            session_id,
53            debugger: self.clone(),
54        })
55    }
56
57    /// Get session handle for existing session
58    #[must_use]
59    pub fn get_session(&self, session_id: &str) -> Option<DebugSessionHandle> {
60        let sessions = self.sessions.read().unwrap();
61        if sessions.contains_key(session_id) {
62            Some(DebugSessionHandle {
63                session_id: session_id.to_string(),
64                debugger: self.clone(),
65            })
66        } else {
67            None
68        }
69    }
70
71    /// List all active sessions
72    #[must_use]
73    pub fn list_sessions(&self) -> Vec<String> {
74        let sessions = self.sessions.read().unwrap();
75        sessions.keys().cloned().collect()
76    }
77
78    /// Get debugging statistics
79    #[must_use]
80    pub fn get_debug_statistics(&self) -> DebugStatistics {
81        let sessions = self.sessions.read().unwrap();
82        let profiler = self.profiler.lock().unwrap();
83
84        /// DebugStatistics
85        DebugStatistics {
86            active_sessions: sessions.len(),
87            total_events: self.event_log.lock().unwrap().len(),
88            memory_usage: profiler.get_memory_usage(),
89            cpu_usage: profiler.get_cpu_usage(),
90            uptime: profiler.get_uptime(),
91        }
92    }
93
94    fn log_event(&self, event: DebugEvent) -> SklResult<()> {
95        let mut log = self.event_log.lock().unwrap();
96        log.push_back(event);
97
98        // Keep only last N events to prevent memory bloat
99        while log.len() > self.global_config.max_event_history {
100            log.pop_front();
101        }
102
103        Ok(())
104    }
105}
106
107impl Clone for AdvancedPipelineDebugger {
108    fn clone(&self) -> Self {
109        Self {
110            sessions: Arc::clone(&self.sessions),
111            global_config: self.global_config.clone(),
112            event_log: Arc::clone(&self.event_log),
113            profiler: Arc::clone(&self.profiler),
114        }
115    }
116}
117
118/// Debug session configuration
119#[derive(Debug, Clone)]
120pub struct DebugConfig {
121    pub enable_step_by_step: bool,
122    pub enable_breakpoints: bool,
123    pub enable_profiling: bool,
124    pub enable_memory_tracking: bool,
125    pub max_event_history: usize,
126    pub auto_save_state: bool,
127    pub verbose_logging: bool,
128}
129
130impl Default for DebugConfig {
131    fn default() -> Self {
132        Self {
133            enable_step_by_step: true,
134            enable_breakpoints: true,
135            enable_profiling: true,
136            enable_memory_tracking: true,
137            max_event_history: 10000,
138            auto_save_state: true,
139            verbose_logging: false,
140        }
141    }
142}
143
144/// Individual debugging session
145pub struct DebugSession {
146    pub id: String,
147    pub pipeline_id: String,
148    pub config: DebugConfig,
149    pub state: DebugSessionState,
150    pub breakpoints: Vec<Breakpoint>,
151    pub watch_expressions: Vec<WatchExpression>,
152    pub execution_history: Vec<ExecutionStep>,
153    pub current_step: usize,
154    pub variable_inspector: VariableInspector,
155    pub call_stack: Vec<CallStackFrame>,
156}
157
158impl DebugSession {
159    #[must_use]
160    pub fn new(id: String, pipeline_id: String, config: DebugConfig) -> Self {
161        Self {
162            id,
163            pipeline_id,
164            config,
165            state: DebugSessionState::Ready,
166            breakpoints: Vec::new(),
167            watch_expressions: Vec::new(),
168            execution_history: Vec::new(),
169            current_step: 0,
170            variable_inspector: VariableInspector::new(),
171            call_stack: Vec::new(),
172        }
173    }
174
175    /// Add a breakpoint to the session
176    pub fn add_breakpoint(&mut self, breakpoint: Breakpoint) {
177        self.breakpoints.push(breakpoint);
178    }
179
180    /// Add a watch expression
181    pub fn add_watch_expression(&mut self, expression: WatchExpression) {
182        self.watch_expressions.push(expression);
183    }
184
185    /// Step through execution
186    pub fn step_next(&mut self) -> SklResult<StepResult> {
187        if self.current_step < self.execution_history.len() {
188            let step = &self.execution_history[self.current_step];
189            self.current_step += 1;
190
191            // Check breakpoints
192            if self.should_break_at_step(step) {
193                self.state = DebugSessionState::Paused;
194                return Ok(StepResult::BreakpointHit(step.clone()));
195            }
196
197            self.state = DebugSessionState::Stepping;
198            Ok(StepResult::Completed(step.clone()))
199        } else {
200            self.state = DebugSessionState::Finished;
201            Ok(StepResult::ExecutionComplete)
202        }
203    }
204
205    /// Continue execution until next breakpoint
206    pub fn continue_execution(&mut self) -> SklResult<StepResult> {
207        self.state = DebugSessionState::Running;
208
209        while self.current_step < self.execution_history.len() {
210            let step = &self.execution_history[self.current_step];
211            self.current_step += 1;
212
213            if self.should_break_at_step(step) {
214                self.state = DebugSessionState::Paused;
215                return Ok(StepResult::BreakpointHit(step.clone()));
216            }
217        }
218
219        self.state = DebugSessionState::Finished;
220        Ok(StepResult::ExecutionComplete)
221    }
222
223    /// Evaluate watch expressions at current state
224    #[must_use]
225    pub fn evaluate_watch_expressions(&self) -> Vec<WatchResult> {
226        self.watch_expressions
227            .iter()
228            .map(|expr| self.evaluate_expression(expr))
229            .collect()
230    }
231
232    /// Get current variable values
233    #[must_use]
234    pub fn get_variable_values(&self) -> HashMap<String, VariableValue> {
235        self.variable_inspector.get_all_variables()
236    }
237
238    /// Get current call stack
239    #[must_use]
240    pub fn get_call_stack(&self) -> &[CallStackFrame] {
241        &self.call_stack
242    }
243
244    fn should_break_at_step(&self, step: &ExecutionStep) -> bool {
245        self.breakpoints.iter().any(|bp| bp.matches_step(step))
246    }
247
248    fn evaluate_expression(&self, expression: &WatchExpression) -> WatchResult {
249        // Simplified expression evaluation - would be more sophisticated in practice
250        /// WatchResult
251        WatchResult {
252            expression: expression.clone(),
253            value: format!("Evaluated: {}", expression.expression),
254            error: None,
255            timestamp: SystemTime::now(),
256        }
257    }
258}
259
260/// Handle for interacting with a debug session
261pub struct DebugSessionHandle {
262    session_id: String,
263    debugger: AdvancedPipelineDebugger,
264}
265
266impl DebugSessionHandle {
267    /// Add breakpoint to this session
268    pub fn add_breakpoint(&self, breakpoint: Breakpoint) -> SklResult<()> {
269        let mut sessions = self.debugger.sessions.write().unwrap();
270        if let Some(session) = sessions.get_mut(&self.session_id) {
271            session.add_breakpoint(breakpoint);
272            Ok(())
273        } else {
274            Err(SklearsError::InvalidState("Session not found".to_string()))
275        }
276    }
277
278    /// Step to next execution point
279    pub fn step_next(&self) -> SklResult<StepResult> {
280        let mut sessions = self.debugger.sessions.write().unwrap();
281        if let Some(session) = sessions.get_mut(&self.session_id) {
282            session.step_next()
283        } else {
284            Err(SklearsError::InvalidState("Session not found".to_string()))
285        }
286    }
287
288    /// Continue execution
289    pub fn continue_execution(&self) -> SklResult<StepResult> {
290        let mut sessions = self.debugger.sessions.write().unwrap();
291        if let Some(session) = sessions.get_mut(&self.session_id) {
292            session.continue_execution()
293        } else {
294            Err(SklearsError::InvalidState("Session not found".to_string()))
295        }
296    }
297
298    /// Get session state
299    #[must_use]
300    pub fn get_state(&self) -> Option<DebugSessionState> {
301        let sessions = self.debugger.sessions.read().unwrap();
302        sessions.get(&self.session_id).map(|s| s.state.clone())
303    }
304
305    /// Get execution history
306    #[must_use]
307    pub fn get_execution_history(&self) -> Vec<ExecutionStep> {
308        let sessions = self.debugger.sessions.read().unwrap();
309        sessions
310            .get(&self.session_id)
311            .map(|s| s.execution_history.clone())
312            .unwrap_or_default()
313    }
314}
315
316/// Debug session state
317#[derive(Debug, Clone, PartialEq)]
318pub enum DebugSessionState {
319    /// Ready
320    Ready,
321    /// Running
322    Running,
323    /// Stepping
324    Stepping,
325    /// Paused
326    Paused,
327    /// Finished
328    Finished,
329    /// Error
330    Error(String),
331}
332
333/// Execution step in debugging
334#[derive(Debug, Clone)]
335pub struct ExecutionStep {
336    pub step_id: String,
337    pub component: String,
338    pub operation: String,
339    pub input_shape: Option<(usize, usize)>,
340    pub output_shape: Option<(usize, usize)>,
341    pub duration: Duration,
342    pub memory_delta: i64,
343    pub timestamp: SystemTime,
344    pub metadata: HashMap<String, String>,
345}
346
347/// Breakpoint definition
348#[derive(Debug, Clone)]
349pub struct Breakpoint {
350    pub id: String,
351    pub condition: BreakpointCondition,
352    pub enabled: bool,
353    pub hit_count: usize,
354    pub hit_limit: Option<usize>,
355}
356
357impl Breakpoint {
358    #[must_use]
359    pub fn new(id: String, condition: BreakpointCondition) -> Self {
360        Self {
361            id,
362            condition,
363            enabled: true,
364            hit_count: 0,
365            hit_limit: None,
366        }
367    }
368
369    #[must_use]
370    pub fn matches_step(&self, step: &ExecutionStep) -> bool {
371        if !self.enabled {
372            return false;
373        }
374
375        if let Some(limit) = self.hit_limit {
376            if self.hit_count >= limit {
377                return false;
378            }
379        }
380
381        self.condition.matches(step)
382    }
383}
384
385/// Breakpoint condition types
386#[derive(Debug, Clone)]
387pub enum BreakpointCondition {
388    /// ComponentName
389    ComponentName(String),
390    /// OperationType
391    OperationType(String),
392    /// StepId
393    StepId(String),
394    /// MemoryThreshold
395    MemoryThreshold(i64),
396    /// DurationThreshold
397    DurationThreshold(Duration),
398    /// Custom
399    Custom(String), // Custom expression
400}
401
402impl BreakpointCondition {
403    #[must_use]
404    pub fn matches(&self, step: &ExecutionStep) -> bool {
405        match self {
406            BreakpointCondition::ComponentName(name) => step.component.contains(name),
407            BreakpointCondition::OperationType(op) => step.operation.contains(op),
408            BreakpointCondition::StepId(id) => step.step_id == *id,
409            BreakpointCondition::MemoryThreshold(threshold) => {
410                step.memory_delta.abs() >= *threshold
411            }
412            BreakpointCondition::DurationThreshold(threshold) => step.duration >= *threshold,
413            BreakpointCondition::Custom(_expr) => {
414                // Would evaluate custom expression against step
415                false
416            }
417        }
418    }
419}
420
421/// Watch expression for monitoring variables
422#[derive(Debug, Clone)]
423pub struct WatchExpression {
424    pub id: String,
425    pub expression: String,
426    pub description: String,
427    pub enabled: bool,
428}
429
430/// Result of evaluating a watch expression
431#[derive(Debug, Clone)]
432pub struct WatchResult {
433    pub expression: WatchExpression,
434    pub value: String,
435    pub error: Option<String>,
436    pub timestamp: SystemTime,
437}
438
439/// Step execution result
440#[derive(Debug, Clone)]
441pub enum StepResult {
442    /// Completed
443    Completed(ExecutionStep),
444    /// BreakpointHit
445    BreakpointHit(ExecutionStep),
446    /// ExecutionComplete
447    ExecutionComplete,
448    /// Error
449    Error(String),
450}
451
452/// Variable inspector for tracking pipeline state
453pub struct VariableInspector {
454    variables: HashMap<String, VariableValue>,
455    history: VecDeque<VariableSnapshot>,
456}
457
458impl Default for VariableInspector {
459    fn default() -> Self {
460        Self::new()
461    }
462}
463
464impl VariableInspector {
465    #[must_use]
466    pub fn new() -> Self {
467        Self {
468            variables: HashMap::new(),
469            history: VecDeque::new(),
470        }
471    }
472
473    pub fn set_variable(&mut self, name: String, value: VariableValue) {
474        self.variables.insert(name, value);
475    }
476
477    #[must_use]
478    pub fn get_variable(&self, name: &str) -> Option<&VariableValue> {
479        self.variables.get(name)
480    }
481
482    #[must_use]
483    pub fn get_all_variables(&self) -> HashMap<String, VariableValue> {
484        self.variables.clone()
485    }
486
487    pub fn take_snapshot(&mut self) -> String {
488        let snapshot = VariableSnapshot {
489            timestamp: SystemTime::now(),
490            variables: self.variables.clone(),
491        };
492
493        let snapshot_id = format!("snapshot_{}", self.history.len());
494        self.history.push_back(snapshot);
495
496        // Keep only last 100 snapshots
497        while self.history.len() > 100 {
498            self.history.pop_front();
499        }
500
501        snapshot_id
502    }
503}
504
505/// Variable value representation
506#[derive(Debug, Clone)]
507pub enum VariableValue {
508    /// Scalar
509    Scalar(f64),
510    /// Array1D
511    Array1D(Vec<f64>),
512    /// Array2D
513    Array2D {
514        shape: (usize, usize),
515        data: Vec<f64>,
516    },
517    /// String
518    String(String),
519    /// Boolean
520    Boolean(bool),
521    /// Object
522    Object(String), // Serialized representation
523}
524
525impl fmt::Display for VariableValue {
526    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
527        match self {
528            VariableValue::Scalar(v) => write!(f, "{v}"),
529            VariableValue::Array1D(v) => write!(f, "Array1D[{}]", v.len()),
530            VariableValue::Array2D { shape, .. } => write!(f, "Array2D[{}x{}]", shape.0, shape.1),
531            VariableValue::String(s) => write!(f, "\"{s}\""),
532            VariableValue::Boolean(b) => write!(f, "{b}"),
533            VariableValue::Object(repr) => write!(f, "{repr}"),
534        }
535    }
536}
537
538/// Variable state snapshot
539#[derive(Debug, Clone)]
540struct VariableSnapshot {
541    timestamp: SystemTime,
542    variables: HashMap<String, VariableValue>,
543}
544
545/// Call stack frame
546#[derive(Debug, Clone)]
547pub struct CallStackFrame {
548    pub function_name: String,
549    pub component: String,
550    pub file: Option<String>,
551    pub line: Option<usize>,
552    pub local_variables: HashMap<String, VariableValue>,
553}
554
555/// Debug event for logging
556#[derive(Debug, Clone)]
557pub enum DebugEvent {
558    /// SessionStarted
559    SessionStarted {
560        session_id: String,
561        timestamp: SystemTime,
562    },
563    /// SessionEnded
564    SessionEnded {
565        session_id: String,
566        timestamp: SystemTime,
567    },
568    /// BreakpointHit
569    BreakpointHit {
570        session_id: String,
571        breakpoint_id: String,
572        step: ExecutionStep,
573    },
574    /// StepExecuted
575    StepExecuted {
576        session_id: String,
577        step: ExecutionStep,
578    },
579    /// Error
580    Error {
581        session_id: String,
582        error: String,
583        timestamp: SystemTime,
584    },
585}
586
587/// Advanced profiler for debugging
588pub struct AdvancedProfiler {
589    start_time: Instant,
590    memory_samples: VecDeque<MemorySample>,
591    cpu_samples: VecDeque<CpuSample>,
592}
593
594impl Default for AdvancedProfiler {
595    fn default() -> Self {
596        Self::new()
597    }
598}
599
600impl AdvancedProfiler {
601    #[must_use]
602    pub fn new() -> Self {
603        Self {
604            start_time: Instant::now(),
605            memory_samples: VecDeque::new(),
606            cpu_samples: VecDeque::new(),
607        }
608    }
609
610    pub fn sample_memory(&mut self) {
611        let sample = MemorySample {
612            timestamp: Instant::now(),
613            used_bytes: Self::get_current_memory_usage(),
614            peak_bytes: Self::get_peak_memory_usage(),
615        };
616
617        self.memory_samples.push_back(sample);
618
619        // Keep only last hour of samples (assuming 1 sample per second)
620        while self.memory_samples.len() > 3600 {
621            self.memory_samples.pop_front();
622        }
623    }
624
625    #[must_use]
626    pub fn get_memory_usage(&self) -> usize {
627        Self::get_current_memory_usage()
628    }
629
630    #[must_use]
631    pub fn get_cpu_usage(&self) -> f64 {
632        // Simplified CPU usage - would use system APIs in practice
633        0.0
634    }
635
636    #[must_use]
637    pub fn get_uptime(&self) -> Duration {
638        self.start_time.elapsed()
639    }
640
641    fn get_current_memory_usage() -> usize {
642        // Simplified - would use actual memory measurement
643        0
644    }
645
646    fn get_peak_memory_usage() -> usize {
647        // Simplified - would track actual peak usage
648        0
649    }
650}
651
652/// Memory usage sample
653#[derive(Debug, Clone)]
654pub struct MemorySample {
655    pub timestamp: Instant,
656    pub used_bytes: usize,
657    pub peak_bytes: usize,
658}
659
660/// CPU usage sample
661#[derive(Debug, Clone)]
662pub struct CpuSample {
663    pub timestamp: Instant,
664    pub usage_percent: f64,
665}
666
667/// Debug statistics
668#[derive(Debug, Clone)]
669pub struct DebugStatistics {
670    pub active_sessions: usize,
671    pub total_events: usize,
672    pub memory_usage: usize,
673    pub cpu_usage: f64,
674    pub uptime: Duration,
675}
676
677/// Interactive debugging utilities
678pub mod interactive {
679    use super::{
680        AdvancedPipelineDebugger, Breakpoint, BreakpointCondition, DebugSessionState, Duration,
681        ExecutionStep, HashMap, SklResult, SklearsError, StepResult, SystemTime, VecDeque,
682    };
683
684    /// Interactive debug console
685    pub struct DebugConsole {
686        debugger: AdvancedPipelineDebugger,
687        current_session: Option<String>,
688        command_history: VecDeque<String>,
689    }
690
691    impl DebugConsole {
692        #[must_use]
693        pub fn new(debugger: AdvancedPipelineDebugger) -> Self {
694            Self {
695                debugger,
696                current_session: None,
697                command_history: VecDeque::new(),
698            }
699        }
700
701        /// Execute debug command
702        pub fn execute_command(&mut self, command: &str) -> SklResult<String> {
703            self.command_history.push_back(command.to_string());
704
705            let parts: Vec<&str> = command.split_whitespace().collect();
706            if parts.is_empty() {
707                return Ok(String::new());
708            }
709
710            match parts[0] {
711                "help" => Ok(self.show_help()),
712                "sessions" => Ok(self.list_sessions()),
713                "use" => self.use_session(parts.get(1).copied()),
714                "breakpoint" => self.add_breakpoint(&parts[1..]),
715                "watch" => self.add_watch(&parts[1..]),
716                "step" => self.step_execution(),
717                "continue" => self.continue_execution(),
718                "vars" => self.show_variables(),
719                "stack" => self.show_call_stack(),
720                "stats" => Ok(self.show_statistics()),
721                "visualize" => self.visualize_pipeline(),
722                "replay" => self.replay_execution(),
723                "profile" => self.show_profiling_data(),
724                "timeline" => self.show_execution_timeline(),
725                _ => Ok(format!("Unknown command: {}", parts[0])),
726            }
727        }
728
729        fn show_help(&self) -> String {
730            r"Available commands:
731  help                    - Show this help message
732  sessions               - List all debug sessions
733  use <session_id>       - Switch to a session
734  breakpoint <condition> - Add a breakpoint
735  watch <expression>     - Add a watch expression
736  step                   - Step to next execution point
737  continue               - Continue execution
738  vars                   - Show current variables
739  stack                  - Show call stack
740  stats                  - Show debug statistics
741  visualize              - Visualize current pipeline structure
742  replay                 - Replay pipeline execution
743  profile                - Show profiling data
744  timeline               - Show execution timeline"
745                .to_string()
746        }
747
748        fn list_sessions(&self) -> String {
749            let sessions = self.debugger.list_sessions();
750            if sessions.is_empty() {
751                "No active sessions".to_string()
752            } else {
753                format!("Active sessions: {}", sessions.join(", "))
754            }
755        }
756
757        fn use_session(&mut self, session_id: Option<&str>) -> SklResult<String> {
758            match session_id {
759                Some(id) => {
760                    if self.debugger.get_session(id).is_some() {
761                        self.current_session = Some(id.to_string());
762                        Ok(format!("Switched to session: {id}"))
763                    } else {
764                        Ok(format!("Session not found: {id}"))
765                    }
766                }
767                None => Ok("Usage: use <session_id>".to_string()),
768            }
769        }
770
771        fn add_breakpoint(&self, args: &[&str]) -> SklResult<String> {
772            if let Some(session_id) = &self.current_session {
773                if let Some(handle) = self.debugger.get_session(session_id) {
774                    let condition = if args.is_empty() {
775                        BreakpointCondition::ComponentName("*".to_string())
776                    } else {
777                        BreakpointCondition::ComponentName(args.join(" "))
778                    };
779
780                    let breakpoint = Breakpoint::new(
781                        format!("bp_{}", chrono::Utc::now().timestamp()),
782                        condition,
783                    );
784
785                    handle.add_breakpoint(breakpoint)?;
786                    Ok("Breakpoint added".to_string())
787                } else {
788                    Ok("Session not found".to_string())
789                }
790            } else {
791                Ok("No active session. Use 'use <session_id>' first.".to_string())
792            }
793        }
794
795        fn add_watch(&self, args: &[&str]) -> SklResult<String> {
796            if args.is_empty() {
797                return Ok("Usage: watch <expression>".to_string());
798            }
799
800            // Watch expression logic would be implemented here
801            Ok(format!("Watch added: {}", args.join(" ")))
802        }
803
804        fn step_execution(&self) -> SklResult<String> {
805            if let Some(session_id) = &self.current_session {
806                if let Some(handle) = self.debugger.get_session(session_id) {
807                    match handle.step_next()? {
808                        StepResult::Completed(step) => {
809                            Ok(format!("Stepped: {} -> {}", step.component, step.operation))
810                        }
811                        StepResult::BreakpointHit(step) => Ok(format!(
812                            "Breakpoint hit at: {} -> {}",
813                            step.component, step.operation
814                        )),
815                        StepResult::ExecutionComplete => Ok("Execution completed".to_string()),
816                        StepResult::Error(err) => Ok(format!("Error: {err}")),
817                    }
818                } else {
819                    Ok("Session not found".to_string())
820                }
821            } else {
822                Ok("No active session".to_string())
823            }
824        }
825
826        fn continue_execution(&self) -> SklResult<String> {
827            if let Some(session_id) = &self.current_session {
828                if let Some(handle) = self.debugger.get_session(session_id) {
829                    match handle.continue_execution()? {
830                        StepResult::BreakpointHit(step) => Ok(format!(
831                            "Breakpoint hit at: {} -> {}",
832                            step.component, step.operation
833                        )),
834                        StepResult::ExecutionComplete => Ok("Execution completed".to_string()),
835                        StepResult::Error(err) => Ok(format!("Error: {err}")),
836                        _ => Ok("Continued execution".to_string()),
837                    }
838                } else {
839                    Ok("Session not found".to_string())
840                }
841            } else {
842                Ok("No active session".to_string())
843            }
844        }
845
846        fn show_variables(&self) -> SklResult<String> {
847            if let Some(session_id) = &self.current_session {
848                let sessions = self.debugger.sessions.read().unwrap();
849                if let Some(session) = sessions.get(session_id) {
850                    let variables = session.get_variable_values();
851                    if variables.is_empty() {
852                        Ok("No variables in current scope".to_string())
853                    } else {
854                        let mut output = String::from("Variables:\n");
855                        for (name, value) in variables {
856                            output.push_str(&format!("  {name} = {value}\n"));
857                        }
858                        Ok(output)
859                    }
860                } else {
861                    Ok("Session not found".to_string())
862                }
863            } else {
864                Ok("No active session".to_string())
865            }
866        }
867
868        fn show_call_stack(&self) -> SklResult<String> {
869            if let Some(session_id) = &self.current_session {
870                let sessions = self.debugger.sessions.read().unwrap();
871                if let Some(session) = sessions.get(session_id) {
872                    let stack = session.get_call_stack();
873                    if stack.is_empty() {
874                        Ok("Empty call stack".to_string())
875                    } else {
876                        let mut output = String::from("Call Stack:\n");
877                        for (i, frame) in stack.iter().enumerate() {
878                            output.push_str(&format!(
879                                "  #{}: {} in {} ({}:{})\n",
880                                i,
881                                frame.function_name,
882                                frame.component,
883                                frame.file.as_ref().unwrap_or(&"unknown".to_string()),
884                                frame.line.unwrap_or(0)
885                            ));
886                        }
887                        Ok(output)
888                    }
889                } else {
890                    Ok("Session not found".to_string())
891                }
892            } else {
893                Ok("No active session".to_string())
894            }
895        }
896
897        fn show_statistics(&self) -> String {
898            let stats = self.debugger.get_debug_statistics();
899            format!(
900                "Statistics:\n  Active sessions: {}\n  Total events: {}\n  Memory usage: {} bytes\n  CPU usage: {:.1}%\n  Uptime: {:.2}s",
901                stats.active_sessions,
902                stats.total_events,
903                stats.memory_usage,
904                stats.cpu_usage,
905                stats.uptime.as_secs_f64()
906            )
907        }
908
909        /// Visualize the current pipeline structure
910        fn visualize_pipeline(&self) -> SklResult<String> {
911            if let Some(session_id) = &self.current_session {
912                let sessions = self.debugger.sessions.read().unwrap();
913                if let Some(session) = sessions.get(session_id) {
914                    let mut visualization = String::from("Pipeline Visualization:\n");
915
916                    // Simple ASCII art representation of pipeline
917                    if session.execution_history.is_empty() {
918                        visualization.push_str("  No execution history available\n");
919                    } else {
920                        visualization.push_str("  ┌─ Start\n");
921                        for (i, step) in session.execution_history.iter().enumerate() {
922                            let marker = if i == session.current_step.saturating_sub(1) {
923                                "►"
924                            } else {
925                                " "
926                            };
927
928                            visualization.push_str(&format!(
929                                "  │{} Step {}: {} -> {}\n",
930                                marker,
931                                i + 1,
932                                step.component,
933                                step.operation
934                            ));
935                        }
936                        visualization.push_str("  └─ End\n");
937                    }
938
939                    Ok(visualization)
940                } else {
941                    Ok("Session not found".to_string())
942                }
943            } else {
944                Ok("No active session".to_string())
945            }
946        }
947
948        /// Replay pipeline execution from the beginning
949        fn replay_execution(&self) -> SklResult<String> {
950            if let Some(session_id) = &self.current_session {
951                let mut sessions = self.debugger.sessions.write().unwrap();
952                if let Some(session) = sessions.get_mut(session_id) {
953                    session.current_step = 0;
954                    session.state = DebugSessionState::Ready;
955                    Ok(
956                        "Execution replay started. Use 'step' or 'continue' to proceed."
957                            .to_string(),
958                    )
959                } else {
960                    Ok("Session not found".to_string())
961                }
962            } else {
963                Ok("No active session".to_string())
964            }
965        }
966
967        /// Show profiling data for the current session
968        fn show_profiling_data(&self) -> SklResult<String> {
969            if let Some(session_id) = &self.current_session {
970                let sessions = self.debugger.sessions.read().unwrap();
971                if let Some(session) = sessions.get(session_id) {
972                    let mut output = String::from("Profiling Data:\n");
973
974                    if session.execution_history.is_empty() {
975                        output.push_str("  No profiling data available\n");
976                        return Ok(output);
977                    }
978
979                    // Calculate statistics
980                    let total_duration: Duration = session
981                        .execution_history
982                        .iter()
983                        .map(|step| step.duration)
984                        .sum();
985
986                    let total_memory_delta: i64 = session
987                        .execution_history
988                        .iter()
989                        .map(|step| step.memory_delta)
990                        .sum();
991
992                    output.push_str(&format!(
993                        "  Total Duration: {:.2}ms\n",
994                        total_duration.as_millis()
995                    ));
996                    output.push_str(&format!(
997                        "  Total Memory Delta: {total_memory_delta} bytes\n"
998                    ));
999                    output.push_str(&format!(
1000                        "  Average Step Duration: {:.2}ms\n",
1001                        total_duration.as_millis() as f64 / session.execution_history.len() as f64
1002                    ));
1003
1004                    // Show top 5 slowest steps
1005                    let mut sorted_steps = session.execution_history.clone();
1006                    sorted_steps.sort_by(|a, b| b.duration.cmp(&a.duration));
1007
1008                    output.push_str("\n  Slowest Steps:\n");
1009                    for (i, step) in sorted_steps.iter().take(5).enumerate() {
1010                        output.push_str(&format!(
1011                            "    {}. {} -> {} ({:.2}ms)\n",
1012                            i + 1,
1013                            step.component,
1014                            step.operation,
1015                            step.duration.as_millis()
1016                        ));
1017                    }
1018
1019                    Ok(output)
1020                } else {
1021                    Ok("Session not found".to_string())
1022                }
1023            } else {
1024                Ok("No active session".to_string())
1025            }
1026        }
1027
1028        /// Show execution timeline
1029        fn show_execution_timeline(&self) -> SklResult<String> {
1030            if let Some(session_id) = &self.current_session {
1031                let sessions = self.debugger.sessions.read().unwrap();
1032                if let Some(session) = sessions.get(session_id) {
1033                    let mut output = String::from("Execution Timeline:\n");
1034
1035                    if session.execution_history.is_empty() {
1036                        output.push_str("  No execution history available\n");
1037                        return Ok(output);
1038                    }
1039
1040                    // Create a simple timeline visualization
1041                    let start_time = session.execution_history.first().unwrap().timestamp;
1042
1043                    for (i, step) in session.execution_history.iter().enumerate() {
1044                        let elapsed = step
1045                            .timestamp
1046                            .duration_since(start_time)
1047                            .unwrap_or(Duration::ZERO);
1048
1049                        let marker = if i == session.current_step.saturating_sub(1) {
1050                            "►"
1051                        } else {
1052                            "•"
1053                        };
1054
1055                        output.push_str(&format!(
1056                            "  {:>8.2}ms {} {} -> {} ({:.1}ms, {} bytes)\n",
1057                            elapsed.as_millis(),
1058                            marker,
1059                            step.component,
1060                            step.operation,
1061                            step.duration.as_millis(),
1062                            step.memory_delta
1063                        ));
1064                    }
1065
1066                    Ok(output)
1067                } else {
1068                    Ok("Session not found".to_string())
1069                }
1070            } else {
1071                Ok("No active session".to_string())
1072            }
1073        }
1074    }
1075
1076    /// Enhanced breakpoint conditions with advanced pattern matching
1077    pub struct AdvancedBreakpointCondition {
1078        pub condition_type: AdvancedConditionType,
1079        pub parameters: HashMap<String, String>,
1080    }
1081
1082    #[derive(Debug, Clone)]
1083    pub enum AdvancedConditionType {
1084        /// Break when memory usage exceeds threshold
1085        MemoryThreshold { threshold_mb: f64 },
1086        /// Break when execution time exceeds threshold
1087        DurationThreshold { threshold_ms: f64 },
1088        /// Break on specific data shape
1089        DataShape { expected_shape: (usize, usize) },
1090        /// Break on specific value patterns
1091        ValuePattern { pattern: String },
1092        /// Break on error conditions
1093        ErrorCondition { error_type: String },
1094        /// Break on performance degradation
1095        PerformanceDegradation { baseline_ratio: f64 },
1096        /// Custom breakpoint with user-defined logic
1097        Custom { expression: String },
1098    }
1099
1100    impl AdvancedBreakpointCondition {
1101        #[must_use]
1102        pub fn matches(&self, step: &ExecutionStep) -> bool {
1103            match &self.condition_type {
1104                AdvancedConditionType::MemoryThreshold { threshold_mb } => {
1105                    (step.memory_delta.abs() as f64 / 1024.0 / 1024.0) >= *threshold_mb
1106                }
1107                AdvancedConditionType::DurationThreshold { threshold_ms } => {
1108                    step.duration.as_millis() as f64 >= *threshold_ms
1109                }
1110                AdvancedConditionType::DataShape { expected_shape } => {
1111                    step.input_shape == Some(*expected_shape)
1112                        || step.output_shape == Some(*expected_shape)
1113                }
1114                AdvancedConditionType::ValuePattern { pattern } => {
1115                    step.metadata.values().any(|v| v.contains(pattern))
1116                }
1117                AdvancedConditionType::ErrorCondition { error_type } => {
1118                    step.metadata.get("error_type") == Some(error_type)
1119                }
1120                AdvancedConditionType::PerformanceDegradation { baseline_ratio } => {
1121                    // Would compare against baseline performance
1122                    false // Placeholder
1123                }
1124                AdvancedConditionType::Custom {
1125                    expression: _expression,
1126                } => {
1127                    // Would evaluate custom expression
1128                    false // Placeholder
1129                }
1130            }
1131        }
1132    }
1133
1134    /// Pipeline replay manager for advanced debugging
1135    pub struct PipelineReplayManager {
1136        recorded_executions: HashMap<String, Vec<ExecutionStep>>,
1137        current_replay: Option<String>,
1138        replay_position: usize,
1139    }
1140
1141    impl PipelineReplayManager {
1142        #[must_use]
1143        pub fn new() -> Self {
1144            Self {
1145                recorded_executions: HashMap::new(),
1146                current_replay: None,
1147                replay_position: 0,
1148            }
1149        }
1150
1151        /// Record an execution for later replay
1152        pub fn record_execution(&mut self, pipeline_id: String, steps: Vec<ExecutionStep>) {
1153            self.recorded_executions.insert(pipeline_id, steps);
1154        }
1155
1156        /// Start replaying a recorded execution
1157        pub fn start_replay(&mut self, pipeline_id: &str) -> SklResult<()> {
1158            if self.recorded_executions.contains_key(pipeline_id) {
1159                self.current_replay = Some(pipeline_id.to_string());
1160                self.replay_position = 0;
1161                Ok(())
1162            } else {
1163                Err(SklearsError::InvalidState(format!(
1164                    "No recording found for pipeline: {pipeline_id}"
1165                )))
1166            }
1167        }
1168
1169        /// Get next step in replay
1170        pub fn next_replay_step(&mut self) -> Option<&ExecutionStep> {
1171            if let Some(pipeline_id) = &self.current_replay {
1172                if let Some(steps) = self.recorded_executions.get(pipeline_id) {
1173                    if self.replay_position < steps.len() {
1174                        let step = &steps[self.replay_position];
1175                        self.replay_position += 1;
1176                        return Some(step);
1177                    }
1178                }
1179            }
1180            None
1181        }
1182
1183        /// Skip to specific position in replay
1184        pub fn seek_replay(&mut self, position: usize) -> SklResult<()> {
1185            if let Some(pipeline_id) = &self.current_replay {
1186                if let Some(steps) = self.recorded_executions.get(pipeline_id) {
1187                    if position < steps.len() {
1188                        self.replay_position = position;
1189                        return Ok(());
1190                    }
1191                }
1192            }
1193            Err(SklearsError::InvalidState(
1194                "Invalid replay position".to_string(),
1195            ))
1196        }
1197
1198        /// Get replay statistics
1199        #[must_use]
1200        pub fn get_replay_stats(&self) -> Option<ReplayStatistics> {
1201            if let Some(pipeline_id) = &self.current_replay {
1202                if let Some(steps) = self.recorded_executions.get(pipeline_id) {
1203                    return Some(ReplayStatistics {
1204                        total_steps: steps.len(),
1205                        current_position: self.replay_position,
1206                        total_duration: steps.iter().map(|s| s.duration).sum(),
1207                        total_memory_usage: steps.iter().map(|s| s.memory_delta).sum(),
1208                    });
1209                }
1210            }
1211            None
1212        }
1213    }
1214
1215    /// Statistics for pipeline replay
1216    #[derive(Debug, Clone)]
1217    pub struct ReplayStatistics {
1218        pub total_steps: usize,
1219        pub current_position: usize,
1220        pub total_duration: Duration,
1221        pub total_memory_usage: i64,
1222    }
1223
1224    impl Default for PipelineReplayManager {
1225        fn default() -> Self {
1226            Self::new()
1227        }
1228    }
1229
1230    /// Performance bottleneck detector
1231    pub struct BottleneckDetector {
1232        execution_profiles: HashMap<String, Vec<ExecutionStep>>,
1233        performance_baselines: HashMap<String, PerformanceBaseline>,
1234    }
1235
1236    impl BottleneckDetector {
1237        #[must_use]
1238        pub fn new() -> Self {
1239            Self {
1240                execution_profiles: HashMap::new(),
1241                performance_baselines: HashMap::new(),
1242            }
1243        }
1244
1245        /// Add execution profile for analysis
1246        pub fn add_profile(&mut self, pipeline_id: String, steps: Vec<ExecutionStep>) {
1247            self.execution_profiles.insert(pipeline_id, steps);
1248        }
1249
1250        /// Detect bottlenecks in a pipeline
1251        #[must_use]
1252        pub fn detect_bottlenecks(&self, pipeline_id: &str) -> Vec<BottleneckReport> {
1253            let mut bottlenecks = Vec::new();
1254
1255            if let Some(steps) = self.execution_profiles.get(pipeline_id) {
1256                // Detect time bottlenecks
1257                let total_duration: Duration = steps.iter().map(|s| s.duration).sum();
1258                let average_duration = total_duration / steps.len() as u32;
1259
1260                for step in steps {
1261                    if step.duration > average_duration * 3 {
1262                        bottlenecks.push(BottleneckReport {
1263                            bottleneck_type: BottleneckType::Performance,
1264                            component: step.component.clone(),
1265                            severity: if step.duration > average_duration * 5 {
1266                                BottleneckSeverity::Critical
1267                            } else {
1268                                BottleneckSeverity::Major
1269                            },
1270                            description: format!(
1271                                "Step duration ({:.2}ms) significantly exceeds average ({:.2}ms)",
1272                                step.duration.as_millis(),
1273                                average_duration.as_millis()
1274                            ),
1275                            suggested_actions: vec![
1276                                "Profile individual operations within this component".to_string(),
1277                                "Consider algorithm optimization".to_string(),
1278                                "Check for inefficient data structures".to_string(),
1279                            ],
1280                        });
1281                    }
1282                }
1283
1284                // Detect memory bottlenecks
1285                for step in steps {
1286                    if step.memory_delta.abs() > 100 * 1024 * 1024 {
1287                        // 100MB threshold
1288                        bottlenecks.push(BottleneckReport {
1289                            bottleneck_type: BottleneckType::Memory,
1290                            component: step.component.clone(),
1291                            severity: if step.memory_delta.abs() > 500 * 1024 * 1024 {
1292                                BottleneckSeverity::Critical
1293                            } else {
1294                                BottleneckSeverity::Major
1295                            },
1296                            description: format!(
1297                                "Large memory allocation/deallocation: {} MB",
1298                                step.memory_delta / 1024 / 1024
1299                            ),
1300                            suggested_actions: vec![
1301                                "Review memory allocation patterns".to_string(),
1302                                "Consider streaming or chunked processing".to_string(),
1303                                "Implement memory pooling".to_string(),
1304                            ],
1305                        });
1306                    }
1307                }
1308            }
1309
1310            bottlenecks
1311        }
1312
1313        /// Set performance baseline for comparison
1314        pub fn set_baseline(&mut self, pipeline_id: String, baseline: PerformanceBaseline) {
1315            self.performance_baselines.insert(pipeline_id, baseline);
1316        }
1317    }
1318
1319    /// Bottleneck report
1320    #[derive(Debug, Clone)]
1321    pub struct BottleneckReport {
1322        pub bottleneck_type: BottleneckType,
1323        pub component: String,
1324        pub severity: BottleneckSeverity,
1325        pub description: String,
1326        pub suggested_actions: Vec<String>,
1327    }
1328
1329    /// Types of performance bottlenecks
1330    #[derive(Debug, Clone, PartialEq)]
1331    pub enum BottleneckType {
1332        /// Performance
1333        Performance,
1334        /// Memory
1335        Memory,
1336        /// IO
1337        IO,
1338        /// Synchronization
1339        Synchronization,
1340    }
1341
1342    /// Severity levels for bottlenecks
1343    #[derive(Debug, Clone, PartialEq, PartialOrd)]
1344    pub enum BottleneckSeverity {
1345        /// Minor
1346        Minor,
1347        /// Major
1348        Major,
1349        /// Critical
1350        Critical,
1351    }
1352
1353    /// Performance baseline for comparison
1354    #[derive(Debug, Clone)]
1355    pub struct PerformanceBaseline {
1356        pub average_duration: Duration,
1357        pub average_memory_usage: i64,
1358        pub step_count: usize,
1359        pub recorded_at: SystemTime,
1360    }
1361
1362    impl Default for BottleneckDetector {
1363        fn default() -> Self {
1364            Self::new()
1365        }
1366    }
1367}
1368
1369#[allow(non_snake_case)]
1370#[cfg(test)]
1371mod tests {
1372    use super::*;
1373
1374    #[test]
1375    fn test_debug_session_creation() {
1376        let config = DebugConfig::default();
1377        let debugger = AdvancedPipelineDebugger::new(config);
1378
1379        let handle = debugger
1380            .start_session("test_session".to_string(), "test_pipeline".to_string())
1381            .unwrap();
1382
1383        assert_eq!(debugger.list_sessions().len(), 1);
1384        assert!(debugger.get_session("test_session").is_some());
1385    }
1386
1387    #[test]
1388    fn test_breakpoint_creation() {
1389        let breakpoint = Breakpoint::new(
1390            "test_bp".to_string(),
1391            BreakpointCondition::ComponentName("TestComponent".to_string()),
1392        );
1393
1394        assert_eq!(breakpoint.id, "test_bp");
1395        assert!(breakpoint.enabled);
1396        assert_eq!(breakpoint.hit_count, 0);
1397    }
1398
1399    #[test]
1400    fn test_watch_expression() {
1401        let watch = WatchExpression {
1402            id: "test_watch".to_string(),
1403            expression: "x + y".to_string(),
1404            description: "Sum of x and y".to_string(),
1405            enabled: true,
1406        };
1407
1408        assert_eq!(watch.expression, "x + y");
1409        assert!(watch.enabled);
1410    }
1411
1412    #[test]
1413    fn test_variable_inspector() {
1414        let mut inspector = VariableInspector::new();
1415
1416        inspector.set_variable("test_var".to_string(), VariableValue::Scalar(42.0));
1417
1418        let value = inspector.get_variable("test_var").unwrap();
1419        match value {
1420            VariableValue::Scalar(v) => assert_eq!(*v, 42.0),
1421            _ => panic!("Expected scalar value"),
1422        }
1423    }
1424}
sklears_compose/advanced_debugging.rs

sklears_compose/
advanced_debugging.rs
