feat: Refactor mcpServer.matchList config generation logic (#2207)

pkg/ingress/kube/mcpserver/provider.go

@@ -0,0 +1,70 @@
+// Copyright (c) 2025 Alibaba Group Holding Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package mcpserver
+
+import (
+	"reflect"
+	"slices"
+	"strings"
+	"sync"
+)
+
+type McpServerProvider interface {
+	GetMcpServers() []*McpServer
+}
+
+type McpRouteProviderAware interface {
+	RegisterMcpServerProvider(provider McpServerProvider)
+}
+
+type McpServerCache struct {
+	mcpServers []*McpServer
+	mutex      sync.RWMutex
+}
+
+func (c *McpServerCache) GetMcpServers() []*McpServer {
+	c.mutex.RLock()
+	defer c.mutex.RUnlock()
+	return c.mcpServers
+}
+
+// SetMcpServers sets the mcp servers and returns true if the cached list is changed
+func (c *McpServerCache) SetMcpServers(mcpServers []*McpServer) bool {
+	c.mutex.Lock()
+	defer c.mutex.Unlock()
+
+	sortedMcpServers := make([]*McpServer, 0, len(mcpServers))
+	sortedMcpServers = append(sortedMcpServers, mcpServers...)
+	// Sort the mcp servers by PathMatchValue in descending order
+	slices.SortFunc(sortedMcpServers, func(a, b *McpServer) int {
+		return strings.Compare(a.Name, b.Name)
+	})
+
+	if len(c.mcpServers) == len(sortedMcpServers) {
+		changed := false
+		for i := range c.mcpServers {
+			if !reflect.DeepEqual(c.mcpServers[i], sortedMcpServers[i]) {
+				changed = true
+				break
+			}
+		}
+		if !changed {
+			return false
+		}
+	}
+
+	c.mcpServers = sortedMcpServers
+	return true
+}