feat: support custom httpClient

internal/darafile/Darafile

@@ -0,0 +1,35 @@
+{
+  "scope": "darabonba",
+  "name": "HttpClient",
+  "version": "0.0.1",
+  "main": "./main.dara",
+  "maintainers": [
+    {
+      "name": "Alibaba Cloud SDK",
+      "email": "sdk-team@alibabacloud.com"
+    }
+  ],
+  "libraries": {
+  },
+  "releases": {
+    "go": "github.com/alibabacloud-go/tea/tea:v1.2.3-0.20240605082020-e6e537a31150"
+  },
+  "go": {
+    "interface": true,
+    "clientName": "HttpClient",
+    "typedef": {
+      "HttpRequest": {
+        "import": "net/http",
+        "type": "http.Request"
+      },
+      "HttpResponse": {
+        "import": "net/http",
+        "type": "http.Response"
+      },
+      "HttpTransport": {
+        "import": "net/http",
+        "type": "http.Transport"
+      }
+    }
+  }
+}

internal/darafile/main.dara

@@ -0,0 +1,8 @@
+typedef HttpRequest;
+typedef HttpResponse;
+typedef HttpTransport;
+
+init(){
+}
+
+async function call(request: HttpRequest, transport: HttpTransport): HttpResponse;

tea/tea.go

@@ -31,7 +31,28 @@ import (
 
 var debugLog = debug.Init("tea")
 
-var hookDo = func(fn func(req *http.Request) (*http.Response, error)) func(req *http.Request) (*http.Response, error) {
+type HttpRequest interface {
+}
+
+type HttpResponse interface {
+}
+
+type HttpClient interface {
+	Call(request *http.Request, transport *http.Transport) (response *http.Response, err error)
+}
+
+type teaClient struct {
+	sync.Mutex
+	httpClient *http.Client
+	ifInit     bool
+}
+
+func (client *teaClient) Call(request *http.Request, transport *http.Transport) (response *http.Response, err error) {
+	response, err = client.httpClient.Do(request)
+	return
+}
+
+var hookDo = func(fn func(req *http.Request, transport *http.Transport) (*http.Response, error)) func(req *http.Request, transport *http.Transport) (*http.Response, error) {
 	return fn
 }
 
@@ -97,12 +118,7 @@ type RuntimeObject struct {
 	Listener       utils.ProgressListener `json:"listener" xml:"listener"`
 	Tracker        *utils.ReaderTracker   `json:"tracker" xml:"tracker"`
 	Logger         *utils.Logger          `json:"logger" xml:"logger"`
-}
-
-type teaClient struct {
-	sync.Mutex
-	httpClient *http.Client
-	ifInit     bool
+	HttpClient
 }
 
 var clientPool = &sync.Map{}
@@ -143,6 +159,9 @@ func NewRuntimeObject(runtime map[string]interface{}) *RuntimeObject {
 	if runtime["logger"] != nil {
 		runtimeObject.Logger = runtime["logger"].(*utils.Logger)
 	}
+	if runtime["httpClient"] != nil {
+		runtimeObject.HttpClient = runtime["httpClient"].(HttpClient)
+	}
 	return runtimeObject
 }
 
@@ -351,18 +370,27 @@ func DoRequest(request *Request, requestRuntime map[string]interface{}) (respons
 	}
 	httpRequest.Host = StringValue(request.Domain)
 
-	client := getTeaClient(runtimeObject.getClientTag(StringValue(request.Domain)))
-	client.Lock()
-	if !client.ifInit {
-		trans, err := getHttpTransport(request, runtimeObject)
-		if err != nil {
-			return nil, err
-		}
-		client.httpClient.Timeout = time.Duration(IntValue(runtimeObject.ReadTimeout)) * time.Millisecond
-		client.httpClient.Transport = trans
-		client.ifInit = true
+	var client HttpClient
+	if runtimeObject.HttpClient == nil {
+		client = getTeaClient(runtimeObject.getClientTag(StringValue(request.Domain)))
+	} else {
+		client = runtimeObject.HttpClient
 	}
-	client.Unlock()
+
+	trans, err := getHttpTransport(request, runtimeObject)
+	if err != nil {
+		return
+	}
+	if defaultClient, ok := client.(*teaClient); ok {
+		defaultClient.Lock()
+		if !defaultClient.ifInit || defaultClient.httpClient.Transport == nil {
+			defaultClient.httpClient.Transport = trans
+		}
+		defaultClient.httpClient.Timeout = time.Duration(IntValue(runtimeObject.ReadTimeout)) * time.Millisecond
+		defaultClient.ifInit = true
+		defaultClient.Unlock()
+	}
+
 	for key, value := range request.Headers {
 		if value == nil || key == "content-length" {
 			continue
@@ -384,7 +412,7 @@ func DoRequest(request *Request, requestRuntime map[string]interface{}) (respons
 	putMsgToMap(fieldMap, httpRequest)
 	startTime := time.Now()
 	fieldMap["{start_time}"] = startTime.Format("2006-01-02 15:04:05")
-	res, err := hookDo(client.httpClient.Do)(httpRequest)
+	res, err := hookDo(client.Call)(httpRequest, trans)
 	fieldMap["{cost}"] = time.Since(startTime).String()
 	completedBytes := int64(0)
 	if runtimeObject.Tracker != nil {

tea/tea_test.go

@@ -487,11 +487,36 @@ func Test_GetBackoffTime(t *testing.T) {
 	utils.AssertEqual(t, true, IntValue(ms) <= 3)
 }
 
+type httpClient struct {
+	HttpClient
+	httpClient *http.Client
+}
+
+func newHttpClient() (*httpClient, error) {
+	client := new(httpClient)
+	err := client.Init()
+	return client, err
+}
+
+func (client *httpClient) Init() (_err error) {
+	return nil
+}
+
+func (client *httpClient) Call(request *http.Request, transport *http.Transport) (_result *http.Response, _err error) {
+	if transport != nil {
+		trans := transport.Clone()
+		client.httpClient.Transport = trans
+	} else {
+		client.httpClient.Transport = http.DefaultTransport.(*http.Transport).Clone()
+	}
+	return client.httpClient.Do(request)
+}
+
 func Test_DoRequest(t *testing.T) {
 	origTestHookDo := hookDo
 	defer func() { hookDo = origTestHookDo }()
-	hookDo = func(fn func(req *http.Request) (*http.Response, error)) func(req *http.Request) (*http.Response, error) {
-		return func(req *http.Request) (*http.Response, error) {
+	hookDo = func(fn func(req *http.Request, transport *http.Transport) (*http.Response, error)) func(req *http.Request, transport *http.Transport) (*http.Response, error) {
+		return func(req *http.Request, transport *http.Transport) (*http.Response, error) {
 			return mockResponse(200, ``, errors.New("Internal error"))
 		}
 	}
@@ -530,8 +555,8 @@ func Test_DoRequest(t *testing.T) {
 	utils.AssertNil(t, resp)
 	utils.AssertContains(t, err.Error(), ` invalid URL escape "%gf"`)
 
-	hookDo = func(fn func(req *http.Request) (*http.Response, error)) func(req *http.Request) (*http.Response, error) {
-		return func(req *http.Request) (*http.Response, error) {
+	hookDo = func(fn func(req *http.Request, transport *http.Transport) (*http.Response, error)) func(req *http.Request, transport *http.Transport) (*http.Response, error) {
+		return func(req *http.Request, transport *http.Transport) (*http.Response, error) {
 			return mockResponse(200, ``, nil)
 		}
 	}
@@ -579,8 +604,8 @@ func Test_DoRequest(t *testing.T) {
 	utils.AssertNil(t, err)
 	utils.AssertEqual(t, "test", StringValue(resp.Headers["tea"]))
 
-	hookDo = func(fn func(req *http.Request) (*http.Response, error)) func(req *http.Request) (*http.Response, error) {
-		return func(req *http.Request) (*http.Response, error) {
+	hookDo = func(fn func(req *http.Request, transport *http.Transport) (*http.Response, error)) func(req *http.Request, transport *http.Transport) (*http.Response, error) {
+		return func(req *http.Request, transport *http.Transport) (*http.Response, error) {
 			utils.AssertEqual(t, "tea-cn-hangzhou.aliyuncs.com:1080", req.Host)
 			return mockResponse(200, ``, errors.New("Internal error"))
 		}
@@ -592,13 +617,20 @@ func Test_DoRequest(t *testing.T) {
 	resp, err = DoRequest(request, runtimeObj)
 	utils.AssertNil(t, resp)
 	utils.AssertEqual(t, `Internal error`, err.Error())
+
+	httpClient, err := newHttpClient()
+	utils.AssertNil(t, err)
+	runtimeObj["httpClient"] = httpClient
+	resp, err = DoRequest(request, runtimeObj)
+	utils.AssertNil(t, resp)
+	utils.AssertEqual(t, `Internal error`, err.Error())
 }
 
 func Test_DoRequestWithConcurrent(t *testing.T) {
 	origTestHookDo := hookDo
 	defer func() { hookDo = origTestHookDo }()
-	hookDo = func(fn func(req *http.Request) (*http.Response, error)) func(req *http.Request) (*http.Response, error) {
-		return func(req *http.Request) (*http.Response, error) {
+	hookDo = func(fn func(req *http.Request, transport *http.Transport) (*http.Response, error)) func(req *http.Request, transport *http.Transport) (*http.Response, error) {
+		return func(req *http.Request, transport *http.Transport) (*http.Response, error) {
 			return mockResponse(200, ``, nil)
 		}
 	}
@@ -694,11 +726,11 @@ func Test_SetDialContext(t *testing.T) {
 }
 
 func Test_hookdo(t *testing.T) {
-	fn := func(req *http.Request) (*http.Response, error) {
+	fn := func(req *http.Request, transport *http.Transport) (*http.Response, error) {
 		return nil, errors.New("hookdo")
 	}
 	result := hookDo(fn)
-	resp, err := result(nil)
+	resp, err := result(nil, nil)
 	utils.AssertNil(t, resp)
 	utils.AssertEqual(t, "hookdo", err.Error())
 }