refactor: Refactor retriever engine checks and expose mapping

internal/handler/system.go

@@ -8,6 +8,7 @@ import (
 
 	"github.com/Tencent/WeKnora/internal/config"
 	"github.com/Tencent/WeKnora/internal/logger"
+	"github.com/Tencent/WeKnora/internal/types"
 	"github.com/gin-gonic/gin"
 	"github.com/minio/minio-go/v7"
 	"github.com/minio/minio-go/v7/pkg/credentials"
@@ -102,7 +103,7 @@ func (h *SystemHandler) getKeywordIndexEngine() string {
 	keywordEngines := []string{}
 	for _, driver := range drivers {
 		driver = strings.TrimSpace(driver)
-		if driver == "postgres" || driver == "elasticsearch_v7" || driver == "elasticsearch_v8" {
+		if h.supportsRetrieverType(driver, types.KeywordsRetrieverType) {
 			keywordEngines = append(keywordEngines, driver)
 		}
 	}
@@ -131,7 +132,7 @@ func (h *SystemHandler) getVectorStoreEngine() string {
 	vectorEngines := []string{}
 	for _, driver := range drivers {
 		driver = strings.TrimSpace(driver)
-		if driver == "postgres" || driver == "elasticsearch_v8" {
+		if h.supportsRetrieverType(driver, types.VectorRetrieverType) {
 			vectorEngines = append(vectorEngines, driver)
 		}
 	}
@@ -150,6 +151,27 @@ func (h *SystemHandler) getGraphDatabaseEngine() string {
 	return "Neo4j"
 }
 
+// supportsRetrieverType checks if a driver supports a specific retriever type
+// by looking up the retrieverEngineMapping from types package
+func (h *SystemHandler) supportsRetrieverType(driver string, retrieverType types.RetrieverType) bool {
+	// Get the mapping of all supported drivers and their capabilities
+	mapping := types.GetRetrieverEngineMapping()
+
+	// Check if the driver exists in the mapping
+	engines, exists := mapping[driver]
+	if !exists {
+		return false
+	}
+
+	// Check if any of the engine configurations support the requested retriever type
+	for _, engine := range engines {
+		if engine.RetrieverType == retrieverType {
+			return true
+		}
+	}
+	return false
+}
+
 // isMinioEnabled checks if MinIO is enabled
 func (h *SystemHandler) isMinioEnabled() bool {
 	// Check if all required MinIO environment variables are set

internal/mcp/client.go

@@ -4,10 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"net"
 	"net/http"
-	"net/url"
-	"strings"
 	"time"
 
 	"github.com/Tencent/WeKnora/internal/logger"
@@ -61,31 +58,6 @@ type mcpGoClient struct {
 	initialized bool
 }
 
-// validateURLScheme validates that authentication endpoints use HTTPS
-func validateURLScheme(serviceURL string, hasBasicAuth bool, hasTokenAuth bool) error {
-	if !hasBasicAuth && !hasTokenAuth {
-		// No authentication, no HTTPS requirement
-		return nil
-	}
-
-	if serviceURL == "" {
-		return fmt.Errorf("URL is required")
-	}
-
-	// Parse the URL
-	parsedURL, err := url.Parse(serviceURL)
-	if err != nil {
-		return fmt.Errorf("invalid URL: %w", err)
-	}
-
-	// Enforce HTTPS for authenticated endpoints
-	if parsedURL.Scheme != "https" {
-		return fmt.Errorf("HTTPS is required for authenticated connections, got %s scheme", parsedURL.Scheme)
-	}
-
-	return nil
-}
-
 // NewMCPClient creates a new MCP client based on the transport type
 func NewMCPClient(config *ClientConfig) (MCPClient, error) {
 	// Create HTTP client with timeout

internal/types/tenant.go

@@ -29,6 +29,12 @@ var retrieverEngineMapping = map[string][]RetrieverEngineParams{
 	},
 }
 
+// GetRetrieverEngineMapping returns the retriever engine mapping
+// This allows other packages to access the driver capabilities
+func GetRetrieverEngineMapping() map[string][]RetrieverEngineParams {
+	return retrieverEngineMapping
+}
+
 // GetDefaultRetrieverEngines returns the default retriever engines based on RETRIEVE_DRIVER env
 func GetDefaultRetrieverEngines() []RetrieverEngineParams {
 	result := []RetrieverEngineParams{}