feat: add mcp client, convert eino tools

internal/mcp/hub_test.go

@@ -0,0 +1,56 @@
+package mcp
+
+import (
+	"context"
+	"testing"
+
+	"github.com/cloudwego/eino/components/tool"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestGetTools(t *testing.T) {
+	hub, err := NewMCPHub("./test.mcp.json")
+	require.NoError(t, err)
+
+	ctx := context.Background()
+	err = hub.InitServers(ctx)
+	require.NoError(t, err)
+
+	tools := hub.GetTools(ctx)
+	assert.NoError(t, err)
+	assert.Equal(t, 2, len(tools))
+}
+
+func TestCallTool(t *testing.T) {
+	hub, err := NewMCPHub("./test.mcp.json")
+	require.NoError(t, err)
+
+	ctx := context.Background()
+	err = hub.InitServers(ctx)
+	require.NoError(t, err)
+
+	result, err := hub.InvokeTool(ctx, "weather", "get_alerts", map[string]interface{}{
+		"state": "CA",
+	})
+	require.NoError(t, err)
+	t.Logf("Result: %v", result)
+}
+
+func TestCallEinoTool(t *testing.T) {
+	hub, err := NewMCPHub("./test.mcp.json")
+	require.NoError(t, err)
+
+	ctx := context.Background()
+	err = hub.InitServers(ctx)
+	require.NoError(t, err)
+
+	einoTool, err := hub.GetEinoTool(ctx, "weather", "get_alerts")
+	require.NoError(t, err)
+	t.Logf("Tool: %v", einoTool)
+
+	tool := einoTool.(tool.InvokableTool)
+	result, err := tool.InvokableRun(ctx, `{"state": "CA"}`)
+	require.NoError(t, err)
+	t.Logf("Result: %v", result)
+}