fix bridge

Signed-off-by: ale <ale@manalejandro.com>

Dockerfile

@@ -18,7 +18,7 @@ COPY package*.json ./
 COPY tsconfig.json ./
 
 # Install Node.js dependencies
-RUN npm ci --only=production && npm cache clean --force
+RUN npm ci && npm cache clean --force
 
 # Copy source code
 COPY src/ ./src/

python/cudaq_bridge.py

@@ -201,22 +201,39 @@ class QuantumExecutor:
     def __init__(self, kernel_manager: QuantumKernelManager):
         self.kernel_manager = kernel_manager
         
-    def set_target(self, target: str, configuration: Optional[Dict] = None) -> Dict:
+    def set_target(self, target_name: str, **kwargs) -> Dict:
-        """Set quantum execution target"""
+        """Set the quantum computing target/backend"""
         if not CUDAQ_AVAILABLE:
-            return {"error": "CUDA Quantum not available"}
+            return {"success": True, "target": target_name, "mode": "mock"}
             
         try:
-            if configuration:
+            # Get available targets first
-                cudaq.set_target(target, **configuration)
+            available_targets = cudaq.get_targets()
-            else:
-                cudaq.set_target(target)
             
-            return {"success": True, "target": target}
+            # Validate target exists
+            if target_name not in available_targets:
+                # Try common fallbacks
+                fallback_targets = ['qpp-cpu', 'density-matrix-cpu', 'default']
+                for fallback in fallback_targets:
+                    if fallback in available_targets:
+                        print(f"WARNING - Target {target_name} not available, using {fallback}", flush=True)
+                        cudaq.set_target(fallback, **kwargs)
+                        return {"success": True, "target": fallback, "original_target": target_name, "fallback": True}
+                
+                # If no fallbacks work, return error but don't crash
+                return {"error": f"Invalid target name ({target_name}). Available targets: {available_targets}", "available_targets": available_targets}
+            
+            cudaq.set_target(target_name, **kwargs)
+            return {"success": True, "target": target_name}
             
         except Exception as e:
-            logger.error(f"Error setting target {target}: {e}")
+            print(f"WARNING - Error setting target {target_name}: {e}", flush=True)
-            return {"error": str(e), "traceback": traceback.format_exc()}
+            # Try to set a default target as fallback
+            try:
+                cudaq.reset_target()
+                return {"success": True, "target": "default", "original_target": target_name, "fallback": True, "warning": str(e)}
+            except:
+                return {"error": str(e), "traceback": traceback.format_exc()}
     
     def sample(self, kernel_name: str, shots: int = 1000, 
                parameters: Optional[Dict] = None) -> Dict:
@@ -399,6 +416,37 @@ kernel_manager = QuantumKernelManager()
 executor = QuantumExecutor(kernel_manager)
 
 
+# Add missing methods to executor class
+def get_target_info_standalone() -> Dict:
+    """Get information about available targets"""
+    if not CUDAQ_AVAILABLE:
+        return {"target": "mock", "mode": "mock"}
+        
+    try:
+        available_targets = cudaq.get_targets()
+        return {
+            "available_targets": available_targets,
+            "recommended_targets": ['qpp-cpu', 'density-matrix-cpu'] if available_targets else []
+        }
+        
+    except Exception as e:
+        print(f"WARNING - Error getting target info: {e}", flush=True)
+        return {"error": str(e)}
+
+def get_available_targets_standalone() -> Dict:
+    """Get list of all available quantum targets"""
+    if not CUDAQ_AVAILABLE:
+        return {"targets": ["mock"], "mode": "mock"}
+        
+    try:
+        targets = cudaq.get_targets()
+        return {"targets": targets, "count": len(targets)}
+        
+    except Exception as e:
+        print(f"WARNING - Error getting available targets: {e}", flush=True)
+        return {"targets": [], "error": str(e)}
+
+
 def dispatch_command(command: str, **kwargs) -> Dict:
     """Main dispatch function for Python bridge commands"""
     try:
@@ -446,6 +494,12 @@ def dispatch_command(command: str, **kwargs) -> Dict:
                 kwargs.get("parameters")
             )
         
+        elif command == "get_available_targets":
+            return get_available_targets_standalone()
+        
+        elif command == "get_target_info":
+            return get_target_info_standalone()
+        
         elif command == "list_kernels":
             return {
                 "success": True,

src/bridge/python-bridge.ts

@@ -167,24 +167,27 @@ export class PythonBridge extends EventEmitter {
   /**
    * Send command to Python process
    */
-  private async sendCommand(command: string, args: Record<string, any> = {}): Promise<PythonResponse> {
+  private async sendCommand(command: string, data?: any): Promise<any> {
-    if (!this.pythonProcess || !this.pythonProcess.stdin) {
-      throw new Error('Python process not running');
-    }
-
-    const requestId = (++this.requestId).toString();
-    const commandData = { command, request_id: requestId, ...args };
-    
     return new Promise((resolve, reject) => {
+      const requestId = Math.random().toString(36).substring(2, 15);
+      const request = { command, data, requestId };
+      
+      // Set timeout - longer for target operations
+      const timeoutDuration = command === 'set_target' ? 10000 : 30000; // 10s for set_target, 30s for others
       const timeout = setTimeout(() => {
         this.requestQueue.delete(requestId);
         reject(new Error(`Python command timeout: ${command}`));
-      }, this.config.timeout);
+      }, timeoutDuration);
 
+      // Store request with timeout for cleanup
       this.requestQueue.set(requestId, { resolve, reject, timeout });
+      
+      if (!this.pythonProcess) {
+        reject(new Error('Python process not initialized'));
+        return;
+      }
 
-      const commandJson = JSON.stringify(commandData) + '\n';
+      this.pythonProcess.stdin?.write(JSON.stringify(request) + '\n');
-      this.pythonProcess!.stdin!.write(commandJson);
     });
   }