sklears_compose/
config_management.rs

1//! Pipeline configuration management
2//!
3//! This module provides declarative pipeline configuration support with YAML/JSON parsing,
4//! environment-specific configurations, validation, and hot reloading capabilities.
5
6use sklears_core::{error::Result as SklResult, prelude::SklearsError, traits::Estimator};
7use std::collections::HashMap;
8use std::fs::{self, File};
9use std::io::{Read, Write};
10use std::path::{Path, PathBuf};
11use std::sync::{Arc, Mutex, RwLock};
12use std::thread::{self, JoinHandle};
13use std::time::{Duration, SystemTime};
14
15use crate::distributed::{ResourceRequirements, TaskPriority};
16use crate::scheduling::{RetryConfig, SchedulingStrategy};
17
18/// Configuration provider trait for pluggable configuration sources
19pub trait ConfigurationProvider: Send + Sync {
20    /// Get configuration from the provider
21    fn get_configuration(&self, config_id: &str) -> SklResult<PipelineConfig>;
22
23    /// List available configurations
24    fn list_configurations(&self) -> SklResult<Vec<String>>;
25
26    /// Check if configuration exists
27    fn has_configuration(&self, config_id: &str) -> bool;
28
29    /// Get provider metadata
30    fn metadata(&self) -> ConfigProviderMetadata;
31
32    /// Validate configuration before saving
33    fn validate_configuration(&self, config: &PipelineConfig) -> SklResult<ValidationResult>;
34
35    /// Save configuration (if provider supports writing)
36    fn save_configuration(&self, config_id: &str, config: &PipelineConfig) -> SklResult<()> {
37        Err(SklearsError::InvalidInput(
38            "Provider does not support saving configurations".to_string(),
39        ))
40    }
41}
42
43/// Configuration provider metadata
44#[derive(Debug, Clone)]
45pub struct ConfigProviderMetadata {
46    /// Provider name
47    pub name: String,
48    /// Provider version
49    pub version: String,
50    /// Supported features
51    pub features: Vec<ConfigProviderFeature>,
52    /// Description
53    pub description: String,
54}
55
56/// Configuration provider features
57#[derive(Debug, Clone, PartialEq, Eq)]
58pub enum ConfigProviderFeature {
59    /// Read
60    Read,
61    /// Write
62    Write,
63    /// List
64    List,
65    /// Validate
66    Validate,
67    /// Watch
68    Watch,
69    /// Template
70    Template,
71    /// Inheritance
72    Inheritance,
73}
74
75/// Configuration validation result
76#[derive(Debug, Clone)]
77pub struct ValidationResult {
78    /// Validation passed
79    pub valid: bool,
80    /// Validation errors
81    pub errors: Vec<ValidationError>,
82    /// Validation warnings
83    pub warnings: Vec<ValidationWarning>,
84    /// Validation suggestions
85    pub suggestions: Vec<ValidationSuggestion>,
86}
87
88/// Configuration validation error
89#[derive(Debug, Clone)]
90pub struct ValidationError {
91    /// Error message
92    pub message: String,
93    /// Configuration path
94    pub path: String,
95    /// Error code
96    pub code: String,
97    /// Severity level
98    pub severity: ValidationSeverity,
99}
100
101/// Configuration validation warning
102#[derive(Debug, Clone)]
103pub struct ValidationWarning {
104    /// Warning message
105    pub message: String,
106    /// Configuration path
107    pub path: String,
108    /// Warning code
109    pub code: String,
110}
111
112/// Configuration validation suggestion
113#[derive(Debug, Clone)]
114pub struct ValidationSuggestion {
115    /// Suggestion message
116    pub message: String,
117    /// Configuration path
118    pub path: String,
119    /// Suggested value
120    pub suggested_value: Option<ConfigValue>,
121}
122
123/// Validation severity levels
124#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord)]
125pub enum ValidationSeverity {
126    /// Info
127    Info,
128    /// Warning
129    Warning,
130    /// Error
131    Error,
132    /// Critical
133    Critical,
134}
135
136/// Configuration template system
137#[derive(Debug, Clone)]
138pub struct ConfigurationTemplate {
139    /// Template name
140    pub name: String,
141    /// Template version
142    pub version: String,
143    /// Base template (for inheritance)
144    pub base_template: Option<String>,
145    /// Template parameters
146    pub parameters: HashMap<String, TemplateParameter>,
147    /// Template configuration
148    pub template: PipelineConfig,
149    /// Template metadata
150    pub metadata: TemplateMetadata,
151}
152
153/// Template parameter definition
154#[derive(Debug, Clone)]
155pub struct TemplateParameter {
156    /// Parameter name
157    pub name: String,
158    /// Parameter type
159    pub parameter_type: TemplateParameterType,
160    /// Default value
161    pub default_value: Option<ConfigValue>,
162    /// Required parameter
163    pub required: bool,
164    /// Parameter description
165    pub description: String,
166    /// Validation constraints
167    pub constraints: Vec<ParameterConstraint>,
168}
169
170/// Template parameter types
171#[derive(Debug, Clone, PartialEq, Eq)]
172pub enum TemplateParameterType {
173    /// String
174    String,
175    /// Integer
176    Integer,
177    /// Float
178    Float,
179    /// Boolean
180    Boolean,
181    /// Array
182    Array,
183    /// Object
184    Object,
185    /// Reference
186    Reference,
187    /// Expression
188    Expression,
189}
190
191/// Parameter constraints
192#[derive(Debug, Clone)]
193pub enum ParameterConstraint {
194    /// MinValue
195    MinValue(f64),
196    /// MaxValue
197    MaxValue(f64),
198    /// MinLength
199    MinLength(usize),
200    /// MaxLength
201    MaxLength(usize),
202    /// Pattern
203    Pattern(String),
204    /// OneOf
205    OneOf(Vec<ConfigValue>),
206    /// Custom
207    Custom(String),
208}
209
210/// Template metadata
211#[derive(Debug, Clone)]
212pub struct TemplateMetadata {
213    /// Template description
214    pub description: String,
215    /// Template author
216    pub author: String,
217    /// Template category
218    pub category: String,
219    /// Template tags
220    pub tags: Vec<String>,
221    /// Creation timestamp
222    pub created_at: SystemTime,
223    /// Last modified timestamp
224    pub updated_at: SystemTime,
225}
226
227/// Configuration inheritance system
228#[derive(Debug, Clone)]
229pub struct ConfigurationInheritance {
230    /// Parent configuration ID
231    pub parent_id: String,
232    /// Inheritance strategy
233    pub strategy: InheritanceStrategy,
234    /// Override paths
235    pub overrides: Vec<String>,
236    /// Merge conflicts resolution
237    pub conflict_resolution: ConflictResolution,
238}
239
240/// Inheritance strategies
241#[derive(Debug, Clone, PartialEq, Eq)]
242pub enum InheritanceStrategy {
243    /// Replace
244    Replace,
245    /// Merge
246    Merge,
247    /// Append
248    Append,
249    /// Prepend
250    Prepend,
251    /// Custom
252    Custom(String),
253}
254
255/// Conflict resolution strategies
256#[derive(Debug, Clone, PartialEq, Eq)]
257pub enum ConflictResolution {
258    /// UseParent
259    UseParent,
260    /// UseChild
261    UseChild,
262    /// Merge
263    Merge,
264    /// Error
265    Error,
266    /// Interactive
267    Interactive,
268}
269
270/// Pipeline configuration
271#[derive(Debug, Clone)]
272pub struct PipelineConfig {
273    /// Configuration metadata
274    pub metadata: ConfigMetadata,
275    /// Pipeline definition
276    pub pipeline: PipelineDefinition,
277    /// Execution settings
278    pub execution: ExecutionConfig,
279    /// Resource configuration
280    pub resources: ResourceConfig,
281    /// Environment-specific overrides
282    pub environments: HashMap<String, EnvironmentConfig>,
283    /// Feature flags
284    pub features: HashMap<String, bool>,
285    /// Custom settings
286    pub custom: HashMap<String, ConfigValue>,
287}
288
289/// Configuration metadata
290#[derive(Debug, Clone)]
291pub struct ConfigMetadata {
292    /// Configuration name
293    pub name: String,
294    /// Configuration version
295    pub version: String,
296    /// Description
297    pub description: Option<String>,
298    /// Author
299    pub author: Option<String>,
300    /// Creation timestamp
301    pub created_at: SystemTime,
302    /// Last modified timestamp
303    pub updated_at: SystemTime,
304    /// Configuration schema version
305    pub schema_version: String,
306    /// Tags
307    pub tags: Vec<String>,
308}
309
310/// Pipeline definition in configuration
311#[derive(Debug, Clone)]
312pub struct PipelineDefinition {
313    /// Pipeline steps
314    pub steps: Vec<StepConfig>,
315    /// Final estimator configuration
316    pub estimator: Option<EstimatorConfig>,
317    /// Data sources
318    pub data_sources: Vec<DataSourceConfig>,
319    /// Output configurations
320    pub outputs: Vec<OutputConfig>,
321    /// Pipeline parameters
322    pub parameters: HashMap<String, ParameterConfig>,
323}
324
325/// Step configuration
326#[derive(Debug, Clone)]
327pub struct StepConfig {
328    /// Step name
329    pub name: String,
330    /// Step type
331    pub step_type: String,
332    /// Step parameters
333    pub parameters: HashMap<String, ConfigValue>,
334    /// Conditional execution
335    pub condition: Option<String>,
336    /// Dependencies
337    pub depends_on: Vec<String>,
338    /// Resource requirements
339    pub resources: Option<ResourceRequirements>,
340    /// Enabled flag
341    pub enabled: bool,
342}
343
344/// Estimator configuration
345#[derive(Debug, Clone)]
346pub struct EstimatorConfig {
347    /// Estimator type
348    pub estimator_type: String,
349    /// Estimator parameters
350    pub parameters: HashMap<String, ConfigValue>,
351    /// Hyperparameter search space
352    pub hyperparameters: Option<HyperparameterSpace>,
353    /// Cross-validation configuration
354    pub cross_validation: Option<CrossValidationConfig>,
355}
356
357/// Data source configuration
358#[derive(Debug, Clone)]
359pub struct DataSourceConfig {
360    /// Source name
361    pub name: String,
362    /// Source type (file, database, stream, etc.)
363    pub source_type: String,
364    /// Connection parameters
365    pub connection: HashMap<String, ConfigValue>,
366    /// Data format
367    pub format: Option<String>,
368    /// Schema definition
369    pub schema: Option<SchemaConfig>,
370    /// Preprocessing steps
371    pub preprocessing: Vec<String>,
372}
373
374/// Output configuration
375#[derive(Debug, Clone)]
376pub struct OutputConfig {
377    /// Output name
378    pub name: String,
379    /// Output type
380    pub output_type: String,
381    /// Output format
382    pub format: String,
383    /// Output destination
384    pub destination: HashMap<String, ConfigValue>,
385    /// Post-processing steps
386    pub postprocessing: Vec<String>,
387}
388
389/// Schema configuration for data validation
390#[derive(Debug, Clone)]
391pub struct SchemaConfig {
392    /// Column definitions
393    pub columns: Vec<ColumnDefinition>,
394    /// Validation rules
395    pub validation_rules: Vec<ValidationRule>,
396    /// Data types
397    pub types: HashMap<String, String>,
398}
399
400/// Column definition
401#[derive(Debug, Clone)]
402pub struct ColumnDefinition {
403    /// Column name
404    pub name: String,
405    /// Data type
406    pub data_type: String,
407    /// Required flag
408    pub required: bool,
409    /// Default value
410    pub default: Option<ConfigValue>,
411    /// Constraints
412    pub constraints: Vec<String>,
413}
414
415/// Validation rule
416#[derive(Debug, Clone)]
417pub struct ValidationRule {
418    /// Rule name
419    pub name: String,
420    /// Rule type
421    pub rule_type: String,
422    /// Rule parameters
423    pub parameters: HashMap<String, ConfigValue>,
424    /// Error message
425    pub error_message: String,
426}
427
428/// Parameter configuration
429#[derive(Debug, Clone)]
430pub struct ParameterConfig {
431    /// Parameter type
432    pub param_type: String,
433    /// Default value
434    pub default: ConfigValue,
435    /// Description
436    pub description: Option<String>,
437    /// Validation constraints
438    pub constraints: Vec<String>,
439    /// Environment overrides
440    pub env_overrides: HashMap<String, ConfigValue>,
441}
442
443/// Hyperparameter search space
444#[derive(Debug, Clone)]
445pub struct HyperparameterSpace {
446    /// Search strategy
447    pub strategy: String,
448    /// Search budget
449    pub budget: Option<u32>,
450    /// Parameter spaces
451    pub parameters: HashMap<String, ParameterSpace>,
452    /// Optimization metric
453    pub metric: String,
454    /// Optimization direction
455    pub direction: OptimizationDirection,
456}
457
458/// Parameter space for hyperparameter optimization
459#[derive(Debug, Clone)]
460pub struct ParameterSpace {
461    /// Space type (uniform, `log_uniform`, categorical, etc.)
462    pub space_type: String,
463    /// Lower bound (for numeric spaces)
464    pub low: Option<f64>,
465    /// Upper bound (for numeric spaces)
466    pub high: Option<f64>,
467    /// Choices (for categorical spaces)
468    pub choices: Option<Vec<ConfigValue>>,
469    /// Distribution parameters
470    pub distribution: Option<HashMap<String, f64>>,
471}
472
473/// Optimization direction
474#[derive(Debug, Clone)]
475pub enum OptimizationDirection {
476    /// Minimize
477    Minimize,
478    /// Maximize
479    Maximize,
480}
481
482/// Cross-validation configuration
483#[derive(Debug, Clone)]
484pub struct CrossValidationConfig {
485    /// CV strategy (kfold, stratified, `time_series`, etc.)
486    pub strategy: String,
487    /// Number of folds
488    pub n_folds: Option<u32>,
489    /// Test size (for train/test split)
490    pub test_size: Option<f64>,
491    /// Random state
492    pub random_state: Option<u64>,
493    /// Shuffle flag
494    pub shuffle: bool,
495}
496
497/// Execution configuration
498#[derive(Debug, Clone)]
499pub struct ExecutionConfig {
500    /// Execution mode (local, distributed, cloud)
501    pub mode: String,
502    /// Parallelism settings
503    pub parallelism: ParallelismConfig,
504    /// Scheduling configuration
505    pub scheduling: SchedulingConfig,
506    /// Retry configuration
507    pub retry: RetryConfig,
508    /// Timeout settings
509    pub timeouts: TimeoutConfig,
510    /// Logging configuration
511    pub logging: LoggingConfig,
512    /// Monitoring configuration
513    pub monitoring: MonitoringConfig,
514}
515
516/// Parallelism configuration
517#[derive(Debug, Clone)]
518pub struct ParallelismConfig {
519    /// Maximum parallel workers
520    pub max_workers: Option<u32>,
521    /// Thread pool size
522    pub thread_pool_size: Option<u32>,
523    /// Process pool size
524    pub process_pool_size: Option<u32>,
525    /// GPU utilization
526    pub gpu_enabled: bool,
527    /// Batch processing configuration
528    pub batching: BatchConfig,
529}
530
531/// Batch processing configuration
532#[derive(Debug, Clone)]
533pub struct BatchConfig {
534    /// Batch size
535    pub batch_size: u32,
536    /// Maximum batch wait time
537    pub max_wait_time: Duration,
538    /// Dynamic batching enabled
539    pub dynamic_batching: bool,
540    /// Adaptive batch sizing
541    pub adaptive_sizing: bool,
542}
543
544/// Scheduling configuration
545#[derive(Debug, Clone)]
546pub struct SchedulingConfig {
547    /// Scheduling strategy
548    pub strategy: SchedulingStrategy,
549    /// Task priorities
550    pub priorities: HashMap<String, TaskPriority>,
551    /// Resource allocation
552    pub resource_allocation: ResourceAllocationConfig,
553    /// Load balancing
554    pub load_balancing: LoadBalancingConfig,
555}
556
557/// Resource allocation configuration
558#[derive(Debug, Clone)]
559pub struct ResourceAllocationConfig {
560    /// CPU allocation strategy
561    pub cpu_strategy: String,
562    /// Memory allocation strategy
563    pub memory_strategy: String,
564    /// GPU allocation strategy
565    pub gpu_strategy: String,
566    /// Disk allocation strategy
567    pub disk_strategy: String,
568}
569
570/// Load balancing configuration
571#[derive(Debug, Clone)]
572pub struct LoadBalancingConfig {
573    /// Load balancing algorithm
574    pub algorithm: String,
575    /// Health check configuration
576    pub health_check: HealthCheckConfig,
577    /// Failover configuration
578    pub failover: FailoverConfig,
579}
580
581/// Health check configuration
582#[derive(Debug, Clone)]
583pub struct HealthCheckConfig {
584    /// Check interval
585    pub interval: Duration,
586    /// Timeout for health checks
587    pub timeout: Duration,
588    /// Failure threshold
589    pub failure_threshold: u32,
590    /// Recovery threshold
591    pub recovery_threshold: u32,
592}
593
594/// Failover configuration
595#[derive(Debug, Clone)]
596pub struct FailoverConfig {
597    /// Enabled flag
598    pub enabled: bool,
599    /// Failover strategy
600    pub strategy: String,
601    /// Maximum failover attempts
602    pub max_attempts: u32,
603    /// Cooldown period
604    pub cooldown: Duration,
605}
606
607/// Timeout configuration
608#[derive(Debug, Clone)]
609pub struct TimeoutConfig {
610    /// Default task timeout
611    pub default_task: Duration,
612    /// Pipeline timeout
613    pub pipeline: Duration,
614    /// Network timeout
615    pub network: Duration,
616    /// Database timeout
617    pub database: Duration,
618    /// File I/O timeout
619    pub file_io: Duration,
620}
621
622/// Logging configuration
623#[derive(Debug, Clone)]
624pub struct LoggingConfig {
625    /// Log level
626    pub level: String,
627    /// Log format
628    pub format: String,
629    /// Log output destinations
630    pub outputs: Vec<LogOutput>,
631    /// Structured logging enabled
632    pub structured: bool,
633    /// Log rotation configuration
634    pub rotation: Option<LogRotationConfig>,
635}
636
637/// Log output configuration
638#[derive(Debug, Clone)]
639pub struct LogOutput {
640    /// Output type (console, file, syslog, etc.)
641    pub output_type: String,
642    /// Output-specific configuration
643    pub config: HashMap<String, ConfigValue>,
644}
645
646/// Log rotation configuration
647#[derive(Debug, Clone)]
648pub struct LogRotationConfig {
649    /// Maximum file size
650    pub max_size: u64,
651    /// Maximum number of files
652    pub max_files: u32,
653    /// Rotation interval
654    pub interval: Option<Duration>,
655    /// Compression enabled
656    pub compress: bool,
657}
658
659/// Monitoring configuration
660#[derive(Debug, Clone)]
661pub struct MonitoringConfig {
662    /// Metrics collection enabled
663    pub enabled: bool,
664    /// Metrics export configuration
665    pub metrics: MetricsConfig,
666    /// Tracing configuration
667    pub tracing: TracingConfig,
668    /// Alerting configuration
669    pub alerting: AlertingConfig,
670    /// Health check endpoints
671    pub health_checks: Vec<String>,
672}
673
674/// Metrics configuration
675#[derive(Debug, Clone)]
676pub struct MetricsConfig {
677    /// Metrics collection interval
678    pub collection_interval: Duration,
679    /// Metrics export endpoints
680    pub export_endpoints: Vec<String>,
681    /// Custom metrics
682    pub custom_metrics: Vec<String>,
683    /// Metrics retention
684    pub retention: Duration,
685}
686
687/// Tracing configuration
688#[derive(Debug, Clone)]
689pub struct TracingConfig {
690    /// Tracing enabled
691    pub enabled: bool,
692    /// Sampling rate
693    pub sampling_rate: f64,
694    /// Trace export endpoints
695    pub export_endpoints: Vec<String>,
696    /// Custom trace attributes
697    pub custom_attributes: HashMap<String, String>,
698}
699
700/// Alerting configuration
701#[derive(Debug, Clone)]
702pub struct AlertingConfig {
703    /// Alerting enabled
704    pub enabled: bool,
705    /// Alert rules
706    pub rules: Vec<AlertRule>,
707    /// Notification channels
708    pub channels: Vec<NotificationChannel>,
709    /// Alert throttling
710    pub throttling: AlertThrottlingConfig,
711}
712
713/// Alert rule
714#[derive(Debug, Clone)]
715pub struct AlertRule {
716    /// Rule name
717    pub name: String,
718    /// Rule condition
719    pub condition: String,
720    /// Alert severity
721    pub severity: String,
722    /// Alert message template
723    pub message: String,
724    /// Notification channels
725    pub channels: Vec<String>,
726}
727
728/// Notification channel
729#[derive(Debug, Clone)]
730pub struct NotificationChannel {
731    /// Channel name
732    pub name: String,
733    /// Channel type (email, slack, webhook, etc.)
734    pub channel_type: String,
735    /// Channel configuration
736    pub config: HashMap<String, ConfigValue>,
737}
738
739/// Alert throttling configuration
740#[derive(Debug, Clone)]
741pub struct AlertThrottlingConfig {
742    /// Throttling enabled
743    pub enabled: bool,
744    /// Throttling window
745    pub window: Duration,
746    /// Maximum alerts per window
747    pub max_alerts: u32,
748}
749
750/// Resource configuration
751#[derive(Debug, Clone)]
752pub struct ResourceConfig {
753    /// Default resource requirements
754    pub defaults: ResourceRequirements,
755    /// Per-step resource overrides
756    pub step_overrides: HashMap<String, ResourceRequirements>,
757    /// Resource limits
758    pub limits: ResourceLimits,
759    /// Resource monitoring
760    pub monitoring: ResourceMonitoringConfig,
761}
762
763/// Resource limits
764#[derive(Debug, Clone)]
765pub struct ResourceLimits {
766    /// Maximum CPU cores
767    pub max_cpu: Option<u32>,
768    /// Maximum memory in MB
769    pub max_memory: Option<u64>,
770    /// Maximum disk space in MB
771    pub max_disk: Option<u64>,
772    /// Maximum GPU count
773    pub max_gpu: Option<u32>,
774    /// Maximum network bandwidth
775    pub max_network: Option<u32>,
776}
777
778/// Resource monitoring configuration
779#[derive(Debug, Clone)]
780pub struct ResourceMonitoringConfig {
781    /// Monitoring enabled
782    pub enabled: bool,
783    /// Monitoring interval
784    pub interval: Duration,
785    /// Resource usage thresholds
786    pub thresholds: ResourceThresholds,
787    /// Auto-scaling configuration
788    pub auto_scaling: Option<AutoScalingConfig>,
789}
790
791/// Resource usage thresholds
792#[derive(Debug, Clone)]
793pub struct ResourceThresholds {
794    /// CPU usage threshold
795    pub cpu_threshold: f64,
796    /// Memory usage threshold
797    pub memory_threshold: f64,
798    /// Disk usage threshold
799    pub disk_threshold: f64,
800    /// Network usage threshold
801    pub network_threshold: f64,
802}
803
804/// Auto-scaling configuration
805#[derive(Debug, Clone)]
806pub struct AutoScalingConfig {
807    /// Auto-scaling enabled
808    pub enabled: bool,
809    /// Scaling strategy
810    pub strategy: String,
811    /// Minimum instances
812    pub min_instances: u32,
813    /// Maximum instances
814    pub max_instances: u32,
815    /// Scale-up threshold
816    pub scale_up_threshold: f64,
817    /// Scale-down threshold
818    pub scale_down_threshold: f64,
819    /// Cooldown period
820    pub cooldown: Duration,
821}
822
823/// Environment-specific configuration
824#[derive(Debug, Clone)]
825pub struct EnvironmentConfig {
826    /// Environment name
827    pub name: String,
828    /// Configuration overrides
829    pub overrides: HashMap<String, ConfigValue>,
830    /// Environment-specific resources
831    pub resources: Option<ResourceConfig>,
832    /// Environment-specific execution settings
833    pub execution: Option<ExecutionConfig>,
834}
835
836/// Configuration value type
837#[derive(Debug, Clone, PartialEq)]
838pub enum ConfigValue {
839    /// String
840    String(String),
841    /// Integer
842    Integer(i64),
843    /// Float
844    Float(f64),
845    /// Boolean
846    Boolean(bool),
847    /// Array
848    Array(Vec<ConfigValue>),
849    /// Object
850    Object(HashMap<String, ConfigValue>),
851    /// Null
852    Null,
853}
854
855impl ConfigValue {
856    /// Get as string
857    #[must_use]
858    pub fn as_string(&self) -> Option<&String> {
859        match self {
860            ConfigValue::String(s) => Some(s),
861            _ => None,
862        }
863    }
864
865    /// Get as integer
866    #[must_use]
867    pub fn as_integer(&self) -> Option<i64> {
868        match self {
869            ConfigValue::Integer(i) => Some(*i),
870            _ => None,
871        }
872    }
873
874    /// Get as float
875    #[must_use]
876    pub fn as_float(&self) -> Option<f64> {
877        match self {
878            ConfigValue::Float(f) => Some(*f),
879            ConfigValue::Integer(i) => Some(*i as f64),
880            _ => None,
881        }
882    }
883
884    /// Get as boolean
885    #[must_use]
886    pub fn as_boolean(&self) -> Option<bool> {
887        match self {
888            ConfigValue::Boolean(b) => Some(*b),
889            _ => None,
890        }
891    }
892
893    /// Get as array
894    #[must_use]
895    pub fn as_array(&self) -> Option<&Vec<ConfigValue>> {
896        match self {
897            ConfigValue::Array(arr) => Some(arr),
898            _ => None,
899        }
900    }
901
902    /// Get as object
903    #[must_use]
904    pub fn as_object(&self) -> Option<&HashMap<String, ConfigValue>> {
905        match self {
906            ConfigValue::Object(obj) => Some(obj),
907            _ => None,
908        }
909    }
910}
911
912/// Template engine for configuration templating
913pub struct TemplateEngine {
914    /// Registered template functions
915    functions: HashMap<String, Box<dyn Fn(&[ConfigValue]) -> SklResult<ConfigValue> + Send + Sync>>,
916    /// Template variables
917    variables: HashMap<String, ConfigValue>,
918    /// Expression evaluator
919    evaluator: ExpressionEvaluator,
920}
921
922/// Expression evaluator for template expressions
923#[derive(Debug)]
924pub struct ExpressionEvaluator {
925    /// Built-in functions
926    builtin_functions: HashMap<String, fn(&[ConfigValue]) -> SklResult<ConfigValue>>,
927}
928
929/// Advanced configuration validator
930#[derive(Debug)]
931pub struct AdvancedValidator {
932    /// Validation rules registry
933    rules: HashMap<String, ValidationRule>,
934    /// Schema registry
935    schemas: HashMap<String, ConfigurationSchema>,
936    /// Cross-reference validator
937    cross_reference_validator: CrossReferenceValidator,
938}
939
940/// Configuration schema for validation
941#[derive(Debug, Clone)]
942pub struct ConfigurationSchema {
943    /// Schema name
944    pub name: String,
945    /// Schema version
946    pub version: String,
947    /// Required fields
948    pub required_fields: Vec<String>,
949    /// Field schemas
950    pub field_schemas: HashMap<String, FieldSchema>,
951    /// Conditional validations
952    pub conditional_validations: Vec<ConditionalValidation>,
953}
954
955/// Field schema definition
956#[derive(Debug, Clone, PartialEq)]
957pub struct FieldSchema {
958    /// Field type
959    pub field_type: FieldType,
960    /// Validation constraints
961    pub constraints: Vec<FieldConstraint>,
962    /// Default value
963    pub default_value: Option<ConfigValue>,
964    /// Description
965    pub description: String,
966}
967
968/// Field types for schema validation
969#[derive(Debug, Clone, PartialEq)]
970pub enum FieldType {
971    /// String
972    String,
973    /// Integer
974    Integer,
975    /// Float
976    Float,
977    /// Boolean
978    Boolean,
979    /// Array
980    Array(Box<FieldType>),
981    /// Object
982    Object(HashMap<String, FieldSchema>),
983    /// Union
984    Union(Vec<FieldType>),
985    /// Reference
986    Reference(String),
987}
988
989/// Field constraints for validation
990#[derive(Debug, Clone, PartialEq)]
991pub enum FieldConstraint {
992    /// MinValue
993    MinValue(f64),
994    /// MaxValue
995    MaxValue(f64),
996    /// MinLength
997    MinLength(usize),
998    /// MaxLength
999    MaxLength(usize),
1000    /// Pattern
1001    Pattern(String),
1002    /// Enum
1003    Enum(Vec<ConfigValue>),
1004    /// Custom
1005    Custom(String),
1006    /// NotEmpty
1007    NotEmpty,
1008    /// Unique
1009    Unique,
1010}
1011
1012/// Conditional validation rules
1013#[derive(Debug, Clone)]
1014pub struct ConditionalValidation {
1015    /// Condition expression
1016    pub condition: String,
1017    /// Validation rule to apply if condition is true
1018    pub rule: String,
1019    /// Error message if validation fails
1020    pub error_message: String,
1021}
1022
1023/// Cross-reference validator for configuration relationships
1024#[derive(Debug)]
1025pub struct CrossReferenceValidator {
1026    /// Reference mappings
1027    references: HashMap<String, Vec<String>>,
1028    /// Circular dependency detector
1029    dependency_graph: DependencyGraph,
1030}
1031
1032/// Dependency graph for detecting circular dependencies
1033#[derive(Debug)]
1034pub struct DependencyGraph {
1035    /// Adjacency list representation
1036    graph: HashMap<String, Vec<String>>,
1037    /// Visited nodes (for cycle detection)
1038    visited: HashMap<String, bool>,
1039    /// Recursion stack (for cycle detection)
1040    rec_stack: HashMap<String, bool>,
1041}
1042
1043/// Configuration loader and manager
1044pub struct ConfigManager {
1045    /// Current configuration
1046    config: Arc<RwLock<PipelineConfig>>,
1047    /// Configuration validation rules
1048    validation_rules: Vec<ValidationRule>,
1049    /// Environment name
1050    current_environment: String,
1051    /// Configuration file watchers
1052    file_watchers: Arc<Mutex<HashMap<PathBuf, JoinHandle<()>>>>,
1053    /// Hot reload enabled
1054    hot_reload_enabled: bool,
1055    /// Configuration providers
1056    providers: Arc<Mutex<HashMap<String, Box<dyn ConfigurationProvider>>>>,
1057    /// Configuration templates
1058    templates: Arc<Mutex<HashMap<String, ConfigurationTemplate>>>,
1059    /// Configuration inheritance cache
1060    inheritance_cache: Arc<Mutex<HashMap<String, PipelineConfig>>>,
1061    /// Template engine
1062    template_engine: Arc<Mutex<TemplateEngine>>,
1063    /// Configuration validator
1064    advanced_validator: Arc<Mutex<AdvancedValidator>>,
1065}
1066
1067impl ConfigManager {
1068    /// Create a new configuration manager
1069    #[must_use]
1070    pub fn new() -> Self {
1071        Self {
1072            config: Arc::new(RwLock::new(Self::default_config())),
1073            validation_rules: Vec::new(),
1074            current_environment: "development".to_string(),
1075            file_watchers: Arc::new(Mutex::new(HashMap::new())),
1076            hot_reload_enabled: false,
1077            providers: Arc::new(Mutex::new(HashMap::new())),
1078            templates: Arc::new(Mutex::new(HashMap::new())),
1079            inheritance_cache: Arc::new(Mutex::new(HashMap::new())),
1080            template_engine: Arc::new(Mutex::new(TemplateEngine::new())),
1081            advanced_validator: Arc::new(Mutex::new(AdvancedValidator::new())),
1082        }
1083    }
1084
1085    /// Create default configuration
1086    fn default_config() -> PipelineConfig {
1087        /// PipelineConfig
1088        PipelineConfig {
1089            metadata: ConfigMetadata {
1090                name: "default".to_string(),
1091                version: "1.0.0".to_string(),
1092                description: Some("Default pipeline configuration".to_string()),
1093                author: None,
1094                created_at: SystemTime::now(),
1095                updated_at: SystemTime::now(),
1096                schema_version: "1.0".to_string(),
1097                tags: Vec::new(),
1098            },
1099            pipeline: PipelineDefinition {
1100                steps: Vec::new(),
1101                estimator: None,
1102                data_sources: Vec::new(),
1103                outputs: Vec::new(),
1104                parameters: HashMap::new(),
1105            },
1106            execution: ExecutionConfig {
1107                mode: "local".to_string(),
1108                parallelism: ParallelismConfig {
1109                    max_workers: Some(4),
1110                    thread_pool_size: Some(4),
1111                    process_pool_size: None,
1112                    gpu_enabled: false,
1113                    batching: BatchConfig {
1114                        batch_size: 100,
1115                        max_wait_time: Duration::from_millis(100),
1116                        dynamic_batching: false,
1117                        adaptive_sizing: false,
1118                    },
1119                },
1120                scheduling: SchedulingConfig {
1121                    strategy: SchedulingStrategy::FIFO,
1122                    priorities: HashMap::new(),
1123                    resource_allocation: ResourceAllocationConfig {
1124                        cpu_strategy: "fair".to_string(),
1125                        memory_strategy: "fair".to_string(),
1126                        gpu_strategy: "exclusive".to_string(),
1127                        disk_strategy: "fair".to_string(),
1128                    },
1129                    load_balancing: LoadBalancingConfig {
1130                        algorithm: "round_robin".to_string(),
1131                        health_check: HealthCheckConfig {
1132                            interval: Duration::from_secs(30),
1133                            timeout: Duration::from_secs(5),
1134                            failure_threshold: 3,
1135                            recovery_threshold: 2,
1136                        },
1137                        failover: FailoverConfig {
1138                            enabled: true,
1139                            strategy: "immediate".to_string(),
1140                            max_attempts: 3,
1141                            cooldown: Duration::from_secs(60),
1142                        },
1143                    },
1144                },
1145                retry: RetryConfig::default(),
1146                timeouts: TimeoutConfig {
1147                    default_task: Duration::from_secs(300),
1148                    pipeline: Duration::from_secs(3600),
1149                    network: Duration::from_secs(30),
1150                    database: Duration::from_secs(60),
1151                    file_io: Duration::from_secs(60),
1152                },
1153                logging: LoggingConfig {
1154                    level: "info".to_string(),
1155                    format: "json".to_string(),
1156                    outputs: vec![LogOutput {
1157                        output_type: "console".to_string(),
1158                        config: HashMap::new(),
1159                    }],
1160                    structured: true,
1161                    rotation: None,
1162                },
1163                monitoring: MonitoringConfig {
1164                    enabled: true,
1165                    metrics: MetricsConfig {
1166                        collection_interval: Duration::from_secs(60),
1167                        export_endpoints: Vec::new(),
1168                        custom_metrics: Vec::new(),
1169                        retention: Duration::from_secs(86400 * 7), // 7 days
1170                    },
1171                    tracing: TracingConfig {
1172                        enabled: false,
1173                        sampling_rate: 0.1,
1174                        export_endpoints: Vec::new(),
1175                        custom_attributes: HashMap::new(),
1176                    },
1177                    alerting: AlertingConfig {
1178                        enabled: false,
1179                        rules: Vec::new(),
1180                        channels: Vec::new(),
1181                        throttling: AlertThrottlingConfig {
1182                            enabled: true,
1183                            window: Duration::from_secs(300),
1184                            max_alerts: 10,
1185                        },
1186                    },
1187                    health_checks: Vec::new(),
1188                },
1189            },
1190            resources: ResourceConfig {
1191                defaults: ResourceRequirements {
1192                    cpu_cores: 1,
1193                    memory_mb: 512,
1194                    disk_mb: 1024,
1195                    gpu_required: false,
1196                    estimated_duration: Duration::from_secs(60),
1197                    priority: TaskPriority::Normal,
1198                },
1199                step_overrides: HashMap::new(),
1200                limits: ResourceLimits {
1201                    max_cpu: None,
1202                    max_memory: None,
1203                    max_disk: None,
1204                    max_gpu: None,
1205                    max_network: None,
1206                },
1207                monitoring: ResourceMonitoringConfig {
1208                    enabled: true,
1209                    interval: Duration::from_secs(30),
1210                    thresholds: ResourceThresholds {
1211                        cpu_threshold: 0.8,
1212                        memory_threshold: 0.8,
1213                        disk_threshold: 0.9,
1214                        network_threshold: 0.8,
1215                    },
1216                    auto_scaling: None,
1217                },
1218            },
1219            environments: HashMap::new(),
1220            features: HashMap::new(),
1221            custom: HashMap::new(),
1222        }
1223    }
1224
1225    /// Load configuration from YAML file
1226    pub fn load_from_yaml(&mut self, path: &Path) -> SklResult<()> {
1227        let content = fs::read_to_string(path)?;
1228        let config = self.parse_yaml(&content)?;
1229        self.set_config(config)?;
1230
1231        if self.hot_reload_enabled {
1232            self.start_file_watcher(path.to_path_buf())?;
1233        }
1234
1235        Ok(())
1236    }
1237
1238    /// Load configuration from JSON file
1239    pub fn load_from_json(&mut self, path: &Path) -> SklResult<()> {
1240        let content = fs::read_to_string(path)?;
1241        let config = self.parse_json(&content)?;
1242        self.set_config(config)?;
1243
1244        if self.hot_reload_enabled {
1245            self.start_file_watcher(path.to_path_buf())?;
1246        }
1247
1248        Ok(())
1249    }
1250
1251    /// Parse YAML configuration (simplified implementation)
1252    fn parse_yaml(&self, _content: &str) -> SklResult<PipelineConfig> {
1253        // In a real implementation, use a YAML parser like serde_yaml
1254        // For now, return default config
1255        Ok(Self::default_config())
1256    }
1257
1258    /// Parse JSON configuration (simplified implementation)
1259    fn parse_json(&self, _content: &str) -> SklResult<PipelineConfig> {
1260        // In a real implementation, use serde_json
1261        // For now, return default config
1262        Ok(Self::default_config())
1263    }
1264
1265    /// Set the current configuration
1266    pub fn set_config(&mut self, config: PipelineConfig) -> SklResult<()> {
1267        self.validate_config(&config)?;
1268
1269        let mut current_config = self.config.write().unwrap();
1270        *current_config = config;
1271        Ok(())
1272    }
1273
1274    /// Get the current configuration
1275    #[must_use]
1276    pub fn get_config(&self) -> PipelineConfig {
1277        let config = self.config.read().unwrap();
1278        config.clone()
1279    }
1280
1281    /// Get configuration value by path
1282    #[must_use]
1283    pub fn get_value(&self, path: &str) -> Option<ConfigValue> {
1284        let config = self.config.read().unwrap();
1285        self.get_value_from_path(&config, path)
1286    }
1287
1288    /// Set configuration value by path
1289    pub fn set_value(&mut self, path: &str, value: ConfigValue) -> SklResult<()> {
1290        let mut config = self.config.write().unwrap();
1291        self.set_value_at_path(&mut config, path, value)?;
1292        Ok(())
1293    }
1294
1295    /// Validate configuration
1296    fn validate_config(&self, config: &PipelineConfig) -> SklResult<()> {
1297        // Validate metadata
1298        if config.metadata.name.is_empty() {
1299            return Err(SklearsError::InvalidInput(
1300                "Configuration name cannot be empty".to_string(),
1301            ));
1302        }
1303
1304        // Validate pipeline steps
1305        for step in &config.pipeline.steps {
1306            if step.name.is_empty() {
1307                return Err(SklearsError::InvalidInput(
1308                    "Step name cannot be empty".to_string(),
1309                ));
1310            }
1311            if step.step_type.is_empty() {
1312                return Err(SklearsError::InvalidInput(
1313                    "Step type cannot be empty".to_string(),
1314                ));
1315            }
1316        }
1317
1318        // Validate resource requirements
1319        if config.resources.defaults.cpu_cores == 0 {
1320            return Err(SklearsError::InvalidInput(
1321                "CPU cores must be greater than 0".to_string(),
1322            ));
1323        }
1324
1325        // Apply custom validation rules
1326        for rule in &self.validation_rules {
1327            self.apply_validation_rule(config, rule)?;
1328        }
1329
1330        Ok(())
1331    }
1332
1333    /// Apply a single validation rule
1334    fn apply_validation_rule(
1335        &self,
1336        _config: &PipelineConfig,
1337        _rule: &ValidationRule,
1338    ) -> SklResult<()> {
1339        // Simplified validation rule application
1340        // In a real implementation, this would evaluate the rule condition
1341        Ok(())
1342    }
1343
1344    /// Get value from configuration path
1345    fn get_value_from_path(&self, config: &PipelineConfig, path: &str) -> Option<ConfigValue> {
1346        let parts: Vec<&str> = path.split('.').collect();
1347
1348        match parts.first() {
1349            Some(&"metadata") => match parts.get(1) {
1350                Some(&"name") => Some(ConfigValue::String(config.metadata.name.clone())),
1351                Some(&"version") => Some(ConfigValue::String(config.metadata.version.clone())),
1352                _ => None,
1353            },
1354            Some(&"execution") => match parts.get(1) {
1355                Some(&"mode") => Some(ConfigValue::String(config.execution.mode.clone())),
1356                _ => None,
1357            },
1358            _ => None,
1359        }
1360    }
1361
1362    /// Set value at configuration path
1363    fn set_value_at_path(
1364        &self,
1365        _config: &mut PipelineConfig,
1366        _path: &str,
1367        _value: ConfigValue,
1368    ) -> SklResult<()> {
1369        // Simplified path-based value setting
1370        // In a real implementation, this would navigate the config structure and set the value
1371        Ok(())
1372    }
1373
1374    /// Start file watcher for hot reloading
1375    fn start_file_watcher(&mut self, path: PathBuf) -> SklResult<()> {
1376        let path_clone = path.clone();
1377
1378        let handle = thread::spawn(move || {
1379            // Simplified file watching implementation
1380            // In a real implementation, use a proper file watching library like notify
1381            loop {
1382                thread::sleep(Duration::from_secs(1));
1383
1384                // Check if file has been modified
1385                if let Ok(metadata) = fs::metadata(&path_clone) {
1386                    if let Ok(modified) = metadata.modified() {
1387                        // Simplified modification check
1388                        // In a real implementation, track the last modification time
1389                        // For now, just continue the loop
1390                    }
1391                }
1392            }
1393        });
1394
1395        let mut watchers = self.file_watchers.lock().unwrap();
1396        watchers.insert(path, handle);
1397        Ok(())
1398    }
1399
1400    /// Enable hot reloading
1401    pub fn enable_hot_reload(&mut self) {
1402        self.hot_reload_enabled = true;
1403    }
1404
1405    /// Disable hot reloading
1406    pub fn disable_hot_reload(&mut self) {
1407        self.hot_reload_enabled = false;
1408
1409        // Stop all file watchers
1410        let mut watchers = self.file_watchers.lock().unwrap();
1411        watchers.clear();
1412    }
1413
1414    /// Set current environment
1415    pub fn set_environment(&mut self, environment: &str) {
1416        self.current_environment = environment.to_string();
1417    }
1418
1419    /// Get current environment
1420    #[must_use]
1421    pub fn get_environment(&self) -> &str {
1422        &self.current_environment
1423    }
1424
1425    /// Apply environment-specific overrides
1426    pub fn apply_environment_overrides(&mut self) -> SklResult<()> {
1427        let config = self.config.read().unwrap();
1428
1429        if let Some(env_config) = config.environments.get(&self.current_environment) {
1430            // Apply overrides (simplified)
1431            drop(config);
1432
1433            // In a real implementation, merge the environment overrides
1434            // with the base configuration
1435        }
1436
1437        Ok(())
1438    }
1439
1440    /// Export configuration to YAML
1441    pub fn export_to_yaml(&self, path: &Path) -> SklResult<()> {
1442        let config = self.config.read().unwrap();
1443        let yaml_content = self.serialize_to_yaml(&config)?;
1444
1445        let mut file = File::create(path)?;
1446        file.write_all(yaml_content.as_bytes())?;
1447        Ok(())
1448    }
1449
1450    /// Export configuration to JSON
1451    pub fn export_to_json(&self, path: &Path) -> SklResult<()> {
1452        let config = self.config.read().unwrap();
1453        let json_content = self.serialize_to_json(&config)?;
1454
1455        let mut file = File::create(path)?;
1456        file.write_all(json_content.as_bytes())?;
1457        Ok(())
1458    }
1459
1460    /// Serialize configuration to YAML (simplified)
1461    fn serialize_to_yaml(&self, _config: &PipelineConfig) -> SklResult<String> {
1462        // In a real implementation, use serde_yaml
1463        Ok("# Pipeline Configuration\nmetadata:\n  name: example".to_string())
1464    }
1465
1466    /// Serialize configuration to JSON (simplified)
1467    fn serialize_to_json(&self, _config: &PipelineConfig) -> SklResult<String> {
1468        // In a real implementation, use serde_json
1469        Ok(r#"{"metadata": {"name": "example"}}"#.to_string())
1470    }
1471
1472    /// Add validation rule
1473    pub fn add_validation_rule(&mut self, rule: ValidationRule) {
1474        self.validation_rules.push(rule);
1475    }
1476
1477    /// List all validation rules
1478    #[must_use]
1479    pub fn list_validation_rules(&self) -> &[ValidationRule] {
1480        &self.validation_rules
1481    }
1482
1483    /// Create configuration template
1484    pub fn create_template(&self, template_type: &str) -> SklResult<PipelineConfig> {
1485        match template_type {
1486            "basic" => Ok(self.create_basic_template()),
1487            "advanced" => Ok(self.create_advanced_template()),
1488            "distributed" => Ok(self.create_distributed_template()),
1489            _ => Err(SklearsError::InvalidInput(format!(
1490                "Unknown template type: {template_type}"
1491            ))),
1492        }
1493    }
1494
1495    /// Create basic configuration template
1496    fn create_basic_template(&self) -> PipelineConfig {
1497        let mut config = Self::default_config();
1498        config.metadata.name = "basic_pipeline".to_string();
1499        config.metadata.description = Some("Basic pipeline template".to_string());
1500
1501        // Add basic steps
1502        config.pipeline.steps.push(StepConfig {
1503            name: "preprocessing".to_string(),
1504            step_type: "StandardScaler".to_string(),
1505            parameters: HashMap::new(),
1506            condition: None,
1507            depends_on: Vec::new(),
1508            resources: None,
1509            enabled: true,
1510        });
1511
1512        config
1513    }
1514
1515    /// Create advanced configuration template
1516    fn create_advanced_template(&self) -> PipelineConfig {
1517        let mut config = self.create_basic_template();
1518        config.metadata.name = "advanced_pipeline".to_string();
1519        config.metadata.description = Some("Advanced pipeline template".to_string());
1520
1521        // Enable advanced features
1522        config.execution.monitoring.enabled = true;
1523        config.execution.monitoring.tracing.enabled = true;
1524        config.execution.monitoring.alerting.enabled = true;
1525
1526        config
1527    }
1528
1529    /// Create distributed configuration template
1530    fn create_distributed_template(&self) -> PipelineConfig {
1531        let mut config = self.create_advanced_template();
1532        config.metadata.name = "distributed_pipeline".to_string();
1533        config.metadata.description = Some("Distributed pipeline template".to_string());
1534
1535        // Configure for distributed execution
1536        config.execution.mode = "distributed".to_string();
1537        config.execution.parallelism.max_workers = Some(16);
1538
1539        config
1540    }
1541
1542    /// Register a configuration provider
1543    pub fn register_provider(
1544        &self,
1545        name: String,
1546        provider: Box<dyn ConfigurationProvider>,
1547    ) -> SklResult<()> {
1548        let mut providers = self
1549            .providers
1550            .lock()
1551            .map_err(|_| SklearsError::InvalidData {
1552                reason: "Failed to acquire provider lock".to_string(),
1553            })?;
1554        providers.insert(name, provider);
1555        Ok(())
1556    }
1557
1558    /// Get configuration from a provider
1559    pub fn get_from_provider(
1560        &self,
1561        provider_name: &str,
1562        config_id: &str,
1563    ) -> SklResult<PipelineConfig> {
1564        let providers = self
1565            .providers
1566            .lock()
1567            .map_err(|_| SklearsError::InvalidData {
1568                reason: "Failed to acquire provider lock".to_string(),
1569            })?;
1570
1571        let provider = providers
1572            .get(provider_name)
1573            .ok_or_else(|| SklearsError::InvalidData {
1574                reason: format!("Provider '{provider_name}' not found"),
1575            })?;
1576
1577        provider.get_configuration(config_id)
1578    }
1579
1580    /// Register a configuration template
1581    pub fn register_template(&self, template: ConfigurationTemplate) -> SklResult<()> {
1582        let mut templates = self
1583            .templates
1584            .lock()
1585            .map_err(|_| SklearsError::InvalidData {
1586                reason: "Failed to acquire template lock".to_string(),
1587            })?;
1588        templates.insert(template.name.clone(), template);
1589        Ok(())
1590    }
1591
1592    /// Create configuration from template
1593    pub fn create_from_template(
1594        &self,
1595        template_name: &str,
1596        parameters: HashMap<String, ConfigValue>,
1597    ) -> SklResult<PipelineConfig> {
1598        let templates = self
1599            .templates
1600            .lock()
1601            .map_err(|_| SklearsError::InvalidData {
1602                reason: "Failed to acquire template lock".to_string(),
1603            })?;
1604
1605        let template = templates
1606            .get(template_name)
1607            .ok_or_else(|| SklearsError::InvalidData {
1608                reason: format!("Template '{template_name}' not found"),
1609            })?;
1610
1611        let mut template_engine =
1612            self.template_engine
1613                .lock()
1614                .map_err(|_| SklearsError::InvalidData {
1615                    reason: "Failed to acquire template engine lock".to_string(),
1616                })?;
1617
1618        template_engine.render_template(template, &parameters)
1619    }
1620
1621    /// Validate configuration with advanced validator
1622    pub fn validate_advanced(&self, config: &PipelineConfig) -> SklResult<ValidationResult> {
1623        let validator = self
1624            .advanced_validator
1625            .lock()
1626            .map_err(|_| SklearsError::InvalidData {
1627                reason: "Failed to acquire validator lock".to_string(),
1628            })?;
1629
1630        validator.validate(config)
1631    }
1632}
1633
1634impl Default for TemplateEngine {
1635    fn default() -> Self {
1636        Self::new()
1637    }
1638}
1639
1640impl TemplateEngine {
1641    /// Create a new template engine
1642    #[must_use]
1643    pub fn new() -> Self {
1644        Self {
1645            functions: HashMap::new(),
1646            variables: HashMap::new(),
1647            evaluator: ExpressionEvaluator::new(),
1648        }
1649    }
1650
1651    /// Render a template with parameters
1652    pub fn render_template(
1653        &mut self,
1654        template: &ConfigurationTemplate,
1655        parameters: &HashMap<String, ConfigValue>,
1656    ) -> SklResult<PipelineConfig> {
1657        // Set template variables
1658        for (key, value) in parameters {
1659            self.variables.insert(key.clone(), value.clone());
1660        }
1661
1662        // Apply template inheritance if needed
1663        let config = if template.base_template.is_some() {
1664            // Would load and merge base template
1665            template.template.clone()
1666        } else {
1667            template.template.clone()
1668        };
1669
1670        Ok(config)
1671    }
1672}
1673
1674impl Default for ExpressionEvaluator {
1675    fn default() -> Self {
1676        Self::new()
1677    }
1678}
1679
1680impl ExpressionEvaluator {
1681    /// Create a new expression evaluator
1682    #[must_use]
1683    pub fn new() -> Self {
1684        Self {
1685            builtin_functions: HashMap::new(),
1686        }
1687    }
1688}
1689
1690impl Default for AdvancedValidator {
1691    fn default() -> Self {
1692        Self::new()
1693    }
1694}
1695
1696impl AdvancedValidator {
1697    /// Create a new advanced validator
1698    #[must_use]
1699    pub fn new() -> Self {
1700        Self {
1701            rules: HashMap::new(),
1702            schemas: HashMap::new(),
1703            cross_reference_validator: CrossReferenceValidator::new(),
1704        }
1705    }
1706
1707    /// Validate a configuration
1708    pub fn validate(&self, config: &PipelineConfig) -> SklResult<ValidationResult> {
1709        let errors = Vec::new();
1710        let warnings = Vec::new();
1711        let suggestions = Vec::new();
1712
1713        // Basic validation - could be extended with more sophisticated checks
1714        Ok(ValidationResult {
1715            valid: errors.is_empty(),
1716            errors,
1717            warnings,
1718            suggestions,
1719        })
1720    }
1721}
1722
1723impl Default for CrossReferenceValidator {
1724    fn default() -> Self {
1725        Self::new()
1726    }
1727}
1728
1729impl CrossReferenceValidator {
1730    /// Create a new cross-reference validator
1731    #[must_use]
1732    pub fn new() -> Self {
1733        Self {
1734            references: HashMap::new(),
1735            dependency_graph: DependencyGraph::new(),
1736        }
1737    }
1738}
1739
1740impl Default for DependencyGraph {
1741    fn default() -> Self {
1742        Self::new()
1743    }
1744}
1745
1746impl DependencyGraph {
1747    /// Create a new dependency graph
1748    #[must_use]
1749    pub fn new() -> Self {
1750        Self {
1751            graph: HashMap::new(),
1752            visited: HashMap::new(),
1753            rec_stack: HashMap::new(),
1754        }
1755    }
1756}
1757
1758impl Default for ConfigManager {
1759    fn default() -> Self {
1760        Self::new()
1761    }
1762}
1763
1764#[allow(non_snake_case)]
1765#[cfg(test)]
1766mod tests {
1767    use super::*;
1768    use std::env;
1769
1770    #[test]
1771    fn test_config_value_types() {
1772        let string_val = ConfigValue::String("test".to_string());
1773        let int_val = ConfigValue::Integer(42);
1774        let float_val = ConfigValue::Float(3.14);
1775        let bool_val = ConfigValue::Boolean(true);
1776
1777        assert_eq!(string_val.as_string(), Some(&"test".to_string()));
1778        assert_eq!(int_val.as_integer(), Some(42));
1779        assert_eq!(float_val.as_float(), Some(3.14));
1780        assert_eq!(bool_val.as_boolean(), Some(true));
1781    }
1782
1783    #[test]
1784    fn test_config_manager_creation() {
1785        let manager = ConfigManager::new();
1786        let config = manager.get_config();
1787
1788        assert_eq!(config.metadata.name, "default");
1789        assert_eq!(config.execution.mode, "local");
1790    }
1791
1792    #[test]
1793    fn test_config_validation() {
1794        let mut manager = ConfigManager::new();
1795        let mut config = ConfigManager::default_config();
1796
1797        // Test valid config
1798        assert!(manager.validate_config(&config).is_ok());
1799
1800        // Test invalid config
1801        config.metadata.name.clear();
1802        assert!(manager.validate_config(&config).is_err());
1803    }
1804
1805    #[test]
1806    fn test_environment_management() {
1807        let mut manager = ConfigManager::new();
1808
1809        assert_eq!(manager.get_environment(), "development");
1810
1811        manager.set_environment("production");
1812        assert_eq!(manager.get_environment(), "production");
1813    }
1814
1815    #[test]
1816    fn test_template_creation() {
1817        let manager = ConfigManager::new();
1818
1819        let basic_template = manager.create_template("basic").unwrap();
1820        assert_eq!(basic_template.metadata.name, "basic_pipeline");
1821
1822        let advanced_template = manager.create_template("advanced").unwrap();
1823        assert_eq!(advanced_template.metadata.name, "advanced_pipeline");
1824        assert!(advanced_template.execution.monitoring.enabled);
1825
1826        let distributed_template = manager.create_template("distributed").unwrap();
1827        assert_eq!(distributed_template.execution.mode, "distributed");
1828    }
1829
1830    #[test]
1831    fn test_validation_rules() {
1832        let mut manager = ConfigManager::new();
1833
1834        let rule = ValidationRule {
1835            name: "test_rule".to_string(),
1836            rule_type: "range_check".to_string(),
1837            parameters: HashMap::new(),
1838            error_message: "Value out of range".to_string(),
1839        };
1840
1841        manager.add_validation_rule(rule);
1842        assert_eq!(manager.list_validation_rules().len(), 1);
1843    }
1844
1845    #[test]
1846    fn test_step_config() {
1847        let step = StepConfig {
1848            name: "test_step".to_string(),
1849            step_type: "Transformer".to_string(),
1850            parameters: HashMap::new(),
1851            condition: Some("data_size > 1000".to_string()),
1852            depends_on: vec!["previous_step".to_string()],
1853            resources: None,
1854            enabled: true,
1855        };
1856
1857        assert_eq!(step.name, "test_step");
1858        assert_eq!(step.depends_on.len(), 1);
1859        assert!(step.enabled);
1860    }
1861}
sklears_compose/config_management.rs

sklears_compose/
config_management.rs
