mockforge_core/openapi/
route.rs

1//! OpenAPI route generation from specifications
2//!
3//! This module provides functionality for generating Axum routes
4//! from OpenAPI path definitions.
5
6use crate::intelligent_behavior::config::Persona;
7use crate::openapi::response_selection::{ResponseSelectionMode, ResponseSelector};
8use crate::{ai_response::AiResponseConfig, openapi::spec::OpenApiSpec, Result};
9use openapiv3::{Operation, PathItem, ReferenceOr};
10use std::collections::BTreeMap;
11use std::sync::Arc;
12
13/// Extract path parameters from an OpenAPI path template
14fn extract_path_parameters(path_template: &str) -> Vec<String> {
15    let mut params = Vec::new();
16    let mut in_param = false;
17    let mut current_param = String::new();
18
19    for ch in path_template.chars() {
20        match ch {
21            '{' => {
22                in_param = true;
23                current_param.clear();
24            }
25            '}' => {
26                if in_param {
27                    params.push(current_param.clone());
28                    in_param = false;
29                }
30            }
31            ch if in_param => {
32                current_param.push(ch);
33            }
34            _ => {}
35        }
36    }
37
38    params
39}
40
41/// OpenAPI route wrapper with additional metadata
42#[derive(Debug, Clone)]
43pub struct OpenApiRoute {
44    /// The HTTP method
45    pub method: String,
46    /// The path pattern
47    pub path: String,
48    /// The OpenAPI operation
49    pub operation: Operation,
50    /// Route-specific metadata
51    pub metadata: BTreeMap<String, String>,
52    /// Path parameters extracted from the path
53    pub parameters: Vec<String>,
54    /// Reference to the OpenAPI spec for response generation
55    pub spec: Arc<OpenApiSpec>,
56    /// AI response configuration (parsed from x-mockforge-ai extension)
57    pub ai_config: Option<AiResponseConfig>,
58    /// Response selection mode (parsed from x-mockforge-response-selection extension)
59    pub response_selection_mode: ResponseSelectionMode,
60    /// Response selector for sequential/random modes (shared across requests)
61    pub response_selector: Arc<ResponseSelector>,
62    /// Active persona for consistent data generation (optional)
63    pub persona: Option<Arc<Persona>>,
64}
65
66impl OpenApiRoute {
67    /// Create a new OpenApiRoute
68    pub fn new(method: String, path: String, operation: Operation, spec: Arc<OpenApiSpec>) -> Self {
69        Self::new_with_persona(method, path, operation, spec, None)
70    }
71
72    /// Create a new OpenApiRoute with persona
73    pub fn new_with_persona(
74        method: String,
75        path: String,
76        operation: Operation,
77        spec: Arc<OpenApiSpec>,
78        persona: Option<Arc<Persona>>,
79    ) -> Self {
80        let parameters = extract_path_parameters(&path);
81
82        // Parse AI configuration from x-mockforge-ai vendor extension
83        let ai_config = Self::parse_ai_config(&operation);
84
85        // Parse response selection mode from x-mockforge-response-selection extension
86        let response_selection_mode = Self::parse_response_selection_mode(&operation);
87        let response_selector = Arc::new(ResponseSelector::new(response_selection_mode));
88
89        Self {
90            method,
91            path,
92            operation,
93            metadata: BTreeMap::new(),
94            parameters,
95            spec,
96            ai_config,
97            response_selection_mode,
98            response_selector,
99            persona,
100        }
101    }
102
103    /// Parse AI configuration from OpenAPI operation's vendor extensions
104    fn parse_ai_config(operation: &Operation) -> Option<AiResponseConfig> {
105        // Check for x-mockforge-ai extension
106        if let Some(ai_config_value) = operation.extensions.get("x-mockforge-ai") {
107            // Try to deserialize the AI config from the extension value
108            match serde_json::from_value::<AiResponseConfig>(ai_config_value.clone()) {
109                Ok(config) => {
110                    if config.is_active() {
111                        tracing::debug!(
112                            "Parsed AI config for operation {}: mode={:?}, prompt={:?}",
113                            operation.operation_id.as_deref().unwrap_or("unknown"),
114                            config.mode,
115                            config.prompt
116                        );
117                        return Some(config);
118                    }
119                }
120                Err(e) => {
121                    tracing::warn!(
122                        "Failed to parse x-mockforge-ai extension for operation {}: {}",
123                        operation.operation_id.as_deref().unwrap_or("unknown"),
124                        e
125                    );
126                }
127            }
128        }
129        None
130    }
131
132    /// Parse response selection mode from OpenAPI operation's vendor extensions
133    fn parse_response_selection_mode(operation: &Operation) -> ResponseSelectionMode {
134        // Check for environment variable override (per-operation or global)
135        let op_id = operation.operation_id.as_deref().unwrap_or("unknown");
136
137        // Try operation-specific env var first: MOCKFORGE_RESPONSE_SELECTION_<OPERATION_ID>
138        if let Ok(op_env_var) = std::env::var(format!(
139            "MOCKFORGE_RESPONSE_SELECTION_{}",
140            op_id.to_uppercase().replace('-', "_")
141        )) {
142            if let Some(mode) = ResponseSelectionMode::from_str(&op_env_var) {
143                tracing::debug!(
144                    "Using response selection mode from env var for operation {}: {:?}",
145                    op_id,
146                    mode
147                );
148                return mode;
149            }
150        }
151
152        // Check global env var: MOCKFORGE_RESPONSE_SELECTION_MODE
153        if let Ok(global_mode_str) = std::env::var("MOCKFORGE_RESPONSE_SELECTION_MODE") {
154            if let Some(mode) = ResponseSelectionMode::from_str(&global_mode_str) {
155                tracing::debug!("Using global response selection mode from env var: {:?}", mode);
156                return mode;
157            }
158        }
159
160        // Check for x-mockforge-response-selection extension
161        if let Some(selection_value) = operation.extensions.get("x-mockforge-response-selection") {
162            // Try to parse as string first
163            if let Some(mode_str) = selection_value.as_str() {
164                if let Some(mode) = ResponseSelectionMode::from_str(mode_str) {
165                    tracing::debug!(
166                        "Parsed response selection mode for operation {}: {:?}",
167                        op_id,
168                        mode
169                    );
170                    return mode;
171                }
172            }
173            // Try to parse as object with mode field
174            if let Some(obj) = selection_value.as_object() {
175                if let Some(mode_str) = obj.get("mode").and_then(|v| v.as_str()) {
176                    if let Some(mode) = ResponseSelectionMode::from_str(mode_str) {
177                        tracing::debug!(
178                            "Parsed response selection mode for operation {}: {:?}",
179                            op_id,
180                            mode
181                        );
182                        return mode;
183                    }
184                }
185            }
186            tracing::warn!(
187                "Failed to parse x-mockforge-response-selection extension for operation {}",
188                op_id
189            );
190        }
191        // Default to First mode
192        ResponseSelectionMode::First
193    }
194
195    /// Create an OpenApiRoute from an operation
196    pub fn from_operation(
197        method: &str,
198        path: String,
199        operation: &Operation,
200        spec: Arc<OpenApiSpec>,
201    ) -> Self {
202        Self::from_operation_with_persona(method, path, operation, spec, None)
203    }
204
205    /// Create a new OpenApiRoute from an operation with optional persona
206    pub fn from_operation_with_persona(
207        method: &str,
208        path: String,
209        operation: &Operation,
210        spec: Arc<OpenApiSpec>,
211        persona: Option<Arc<Persona>>,
212    ) -> Self {
213        Self::new_with_persona(method.to_string(), path, operation.clone(), spec, persona)
214    }
215
216    /// Convert OpenAPI path to Axum-compatible path format
217    pub fn axum_path(&self) -> String {
218        // Strip query string if present (some non-standard OpenAPI specs embed query params in path)
219        // Axum v0.7+ uses {param} format, same as OpenAPI
220        self.path.split('?').next().unwrap_or(&self.path).to_string()
221    }
222
223    /// Add metadata to the route
224    pub fn with_metadata(mut self, key: String, value: String) -> Self {
225        self.metadata.insert(key, value);
226        self
227    }
228
229    /// Generate a mock response with status code for this route (async version with AI support)
230    ///
231    /// This method checks if AI response generation is configured and uses it if available,
232    /// otherwise falls back to standard OpenAPI response generation.
233    ///
234    /// # Arguments
235    /// * `context` - The request context for AI prompt expansion
236    /// * `ai_generator` - Optional AI generator implementation for actual LLM calls
237    pub async fn mock_response_with_status_async(
238        &self,
239        context: &crate::ai_response::RequestContext,
240        ai_generator: Option<&dyn crate::openapi::response::AiGenerator>,
241    ) -> (u16, serde_json::Value) {
242        use crate::openapi::response::ResponseGenerator;
243
244        // Find the first available status code from the OpenAPI spec
245        let status_code = self.find_first_available_status_code();
246
247        // Check if AI response generation is configured
248        if let Some(ai_config) = &self.ai_config {
249            if ai_config.is_active() {
250                tracing::info!(
251                    "Using AI-assisted response generation for {} {}",
252                    self.method,
253                    self.path
254                );
255
256                match ResponseGenerator::generate_ai_response(ai_config, context, ai_generator)
257                    .await
258                {
259                    Ok(response_body) => {
260                        tracing::debug!(
261                            "AI response generated successfully for {} {}: {:?}",
262                            self.method,
263                            self.path,
264                            response_body
265                        );
266                        return (status_code, response_body);
267                    }
268                    Err(e) => {
269                        tracing::warn!(
270                            "AI response generation failed for {} {}: {}, falling back to standard generation",
271                            self.method,
272                            self.path,
273                            e
274                        );
275                        // Continue to standard generation on error
276                    }
277                }
278            }
279        }
280
281        // Standard OpenAPI-based response generation
282        let expand_tokens = std::env::var("MOCKFORGE_RESPONSE_TEMPLATE_EXPAND")
283            .map(|v| v == "1" || v.eq_ignore_ascii_case("true"))
284            .unwrap_or(false);
285
286        // Use response selection mode for multiple examples
287        let mode = Some(self.response_selection_mode);
288        let selector = Some(self.response_selector.as_ref());
289
290        // Get persona reference for response generation
291        let persona_ref = self.persona.as_deref();
292
293        match ResponseGenerator::generate_response_with_expansion_and_mode_and_persona(
294            &self.spec,
295            &self.operation,
296            status_code,
297            Some("application/json"),
298            expand_tokens,
299            mode,
300            selector,
301            persona_ref,
302        ) {
303            Ok(response_body) => {
304                tracing::debug!(
305                    "ResponseGenerator succeeded for {} {} with status {}: {:?}",
306                    self.method,
307                    self.path,
308                    status_code,
309                    response_body
310                );
311                (status_code, response_body)
312            }
313            Err(e) => {
314                tracing::debug!(
315                    "ResponseGenerator failed for {} {}: {}, using fallback",
316                    self.method,
317                    self.path,
318                    e
319                );
320                // Fallback to simple mock response if schema-based generation fails
321                let response_body = serde_json::json!({
322                    "message": format!("Mock response for {} {}", self.method, self.path),
323                    "operation_id": self.operation.operation_id,
324                    "status": status_code
325                });
326                (status_code, response_body)
327            }
328        }
329    }
330
331    /// Generate a mock response with status code for this route (synchronous version)
332    ///
333    /// Note: This method does not support AI-assisted response generation.
334    /// Use `mock_response_with_status_async` for AI features.
335    pub fn mock_response_with_status(&self) -> (u16, serde_json::Value) {
336        self.mock_response_with_status_and_scenario(None)
337    }
338
339    /// Generate a mock response with status code and scenario selection
340    ///
341    /// # Arguments
342    /// * `scenario` - Optional scenario name to select from the OpenAPI examples
343    ///
344    /// # Example
345    ///
346    /// ```rust,ignore
347    /// // Select the "error" scenario from examples
348    /// let (status, body) = route.mock_response_with_status_and_scenario(Some("error"));
349    /// ```
350    pub fn mock_response_with_status_and_scenario(
351        &self,
352        scenario: Option<&str>,
353    ) -> (u16, serde_json::Value) {
354        let (status, body, _) = self.mock_response_with_status_and_scenario_and_trace(scenario);
355        (status, body)
356    }
357
358    /// Generate a mock response with status code, scenario selection, and trace collection
359    ///
360    /// Returns a tuple of (status_code, response_body, trace_data)
361    pub fn mock_response_with_status_and_scenario_and_trace(
362        &self,
363        scenario: Option<&str>,
364    ) -> (
365        u16,
366        serde_json::Value,
367        crate::reality_continuum::response_trace::ResponseGenerationTrace,
368    ) {
369        use crate::openapi::response_trace;
370        use crate::reality_continuum::response_trace::ResponseGenerationTrace;
371
372        // Find the first available status code from the OpenAPI spec
373        let status_code = self.find_first_available_status_code();
374
375        // Check if token expansion should be enabled
376        let expand_tokens = std::env::var("MOCKFORGE_RESPONSE_TEMPLATE_EXPAND")
377            .map(|v| v == "1" || v.eq_ignore_ascii_case("true"))
378            .unwrap_or(false);
379
380        // Use response selection mode for multiple examples
381        let mode = Some(self.response_selection_mode);
382        let selector = Some(self.response_selector.as_ref());
383
384        // Try to generate with trace collection
385        match response_trace::generate_response_with_trace(
386            &self.spec,
387            &self.operation,
388            status_code,
389            Some("application/json"),
390            expand_tokens,
391            scenario,
392            mode,
393            selector,
394            None, // No persona in basic route
395        ) {
396            Ok((response_body, trace)) => {
397                tracing::debug!(
398                    "ResponseGenerator succeeded for {} {} with status {} and scenario {:?}: {:?}",
399                    self.method,
400                    self.path,
401                    status_code,
402                    scenario,
403                    response_body
404                );
405                (status_code, response_body, trace)
406            }
407            Err(e) => {
408                tracing::debug!(
409                    "ResponseGenerator failed for {} {}: {}, using fallback",
410                    self.method,
411                    self.path,
412                    e
413                );
414                // Fallback to simple mock response if schema-based generation fails
415                let response_body = serde_json::json!({
416                    "message": format!("Mock response for {} {}", self.method, self.path),
417                    "operation_id": self.operation.operation_id,
418                    "status": status_code
419                });
420                // Create a minimal trace for fallback
421                let mut trace = ResponseGenerationTrace::new();
422                trace.set_final_payload(response_body.clone());
423                trace.add_metadata("fallback".to_string(), serde_json::json!(true));
424                trace.add_metadata("error".to_string(), serde_json::json!(e.to_string()));
425                (status_code, response_body, trace)
426            }
427        }
428    }
429
430    /// Find the first available status code from the OpenAPI operation responses
431    fn find_first_available_status_code(&self) -> u16 {
432        // Look for the first available status code in the responses
433        for (status, _) in &self.operation.responses.responses {
434            match status {
435                openapiv3::StatusCode::Code(code) => {
436                    return *code;
437                }
438                openapiv3::StatusCode::Range(range) => {
439                    // For ranges, use the appropriate status code
440                    match range {
441                        2 => return 200, // 2XX range
442                        3 => return 300, // 3XX range
443                        4 => return 400, // 4XX range
444                        5 => return 500, // 5XX range
445                        _ => continue,   // Skip unknown ranges
446                    }
447                }
448            }
449        }
450
451        // If no specific status codes found, check for default
452        if self.operation.responses.default.is_some() {
453            return 200; // Default to 200 for default responses
454        }
455
456        // Fallback to 200 if nothing else is available
457        200
458    }
459}
460
461/// OpenAPI operation wrapper with path context
462#[derive(Debug, Clone)]
463pub struct OpenApiOperation {
464    /// The HTTP method
465    pub method: String,
466    /// The path this operation belongs to
467    pub path: String,
468    /// The OpenAPI operation
469    pub operation: Operation,
470}
471
472impl OpenApiOperation {
473    /// Create a new OpenApiOperation
474    pub fn new(method: String, path: String, operation: Operation) -> Self {
475        Self {
476            method,
477            path,
478            operation,
479        }
480    }
481}
482
483/// Route generation utilities
484pub struct RouteGenerator;
485
486impl RouteGenerator {
487    /// Generate routes from an OpenAPI path item
488    pub fn generate_routes_from_path(
489        path: &str,
490        path_item: &ReferenceOr<PathItem>,
491        spec: &Arc<OpenApiSpec>,
492    ) -> Result<Vec<OpenApiRoute>> {
493        Self::generate_routes_from_path_with_persona(path, path_item, spec, None)
494    }
495
496    /// Generate routes from an OpenAPI path item with optional persona
497    pub fn generate_routes_from_path_with_persona(
498        path: &str,
499        path_item: &ReferenceOr<PathItem>,
500        spec: &Arc<OpenApiSpec>,
501        persona: Option<Arc<Persona>>,
502    ) -> Result<Vec<OpenApiRoute>> {
503        let mut routes = Vec::new();
504
505        if let Some(item) = path_item.as_item() {
506            // Generate route for each HTTP method
507            if let Some(op) = &item.get {
508                routes.push(OpenApiRoute::new_with_persona(
509                    "GET".to_string(),
510                    path.to_string(),
511                    op.clone(),
512                    spec.clone(),
513                    persona.clone(),
514                ));
515            }
516            if let Some(op) = &item.post {
517                routes.push(OpenApiRoute::new_with_persona(
518                    "POST".to_string(),
519                    path.to_string(),
520                    op.clone(),
521                    spec.clone(),
522                    persona.clone(),
523                ));
524            }
525            if let Some(op) = &item.put {
526                routes.push(OpenApiRoute::new_with_persona(
527                    "PUT".to_string(),
528                    path.to_string(),
529                    op.clone(),
530                    spec.clone(),
531                    persona.clone(),
532                ));
533            }
534            if let Some(op) = &item.delete {
535                routes.push(OpenApiRoute::new_with_persona(
536                    "DELETE".to_string(),
537                    path.to_string(),
538                    op.clone(),
539                    spec.clone(),
540                    persona.clone(),
541                ));
542            }
543            if let Some(op) = &item.patch {
544                routes.push(OpenApiRoute::new_with_persona(
545                    "PATCH".to_string(),
546                    path.to_string(),
547                    op.clone(),
548                    spec.clone(),
549                    persona.clone(),
550                ));
551            }
552            if let Some(op) = &item.head {
553                routes.push(OpenApiRoute::new_with_persona(
554                    "HEAD".to_string(),
555                    path.to_string(),
556                    op.clone(),
557                    spec.clone(),
558                    persona.clone(),
559                ));
560            }
561            if let Some(op) = &item.options {
562                routes.push(OpenApiRoute::new_with_persona(
563                    "OPTIONS".to_string(),
564                    path.to_string(),
565                    op.clone(),
566                    spec.clone(),
567                    persona.clone(),
568                ));
569            }
570            if let Some(op) = &item.trace {
571                routes.push(OpenApiRoute::new_with_persona(
572                    "TRACE".to_string(),
573                    path.to_string(),
574                    op.clone(),
575                    spec.clone(),
576                    persona.clone(),
577                ));
578            }
579        }
580
581        Ok(routes)
582    }
583}
mockforge_core/openapi/route.rs

mockforge_core/openapi/
route.rs
