Function Compute支援為HTTP觸發器配置簽名認證，當請求訊息到達Function Compute網關後，網關會對開啟簽名認證的HTTP觸發器上的請求進行認證，您的函數無需再次對請求籤名進行認證，只需關注商務邏輯即可。本文介紹如何通過控制台為HTTP觸發器配置簽名認證以及如何驗證通過簽名訪問HTTP觸發器。
開啟HTTP觸發器簽名認證
本文介紹如何在函數已有的HTTP觸發器中開啟簽名認證，您需要先建立Web函數，具體操作，請參見建立函數。
登入Function Compute控制台，在左側導覽列，單擊函數。
在頂部功能表列，選擇地區，然後在函數頁面，單擊目標函數。
在函數配置頁面，選擇配置頁簽，在左側導覽列，單擊觸發器，然後單擊目標觸發器右側操作列的編輯。
在編輯觸發程序面板，將認證方式修改為簽名認證，然後單擊確定。
通過簽名訪問HTTP觸發器地址
HTTP觸發器的簽名方式遵循阿里雲SDK的簽名機制，詳情請參見簽名機制。阿里雲SDK提供了各種語言的簽名方法，使用流程如下：
通過阿里雲SDK產生簽名字串。
將簽名字串設定到HTTP請求的Authorization Header中。
使用任意的HTTP用戶端發起請求。
各語言簽名SDK
阿里雲提供的各語言簽名SDK，您可以使用如下捷徑安裝。
語言類型 | SDK |
Golang | go get github.com/alibabacloud-go/openapi-util/service |
Python | pip install alibabacloud-openapi-util |
Node.js | npm install @alicloud/openapi-util |
Java | |
各語言請求樣本
本文提供以下請求樣本，僅供參考，完整的簽名機制請參見簽名機制。
# -*- coding: utf-8 -*-
import os
from datetime import datetime
from urllib.parse import urlparse, parse_qs
import requests
from alibabacloud_openapi_util.client import Client as util
from Tea.request import TeaRequest
accessKeyId = os.environ['ALIBABA_CLOUD_ACCESS_KEY_ID']
accessKeySecret = os.environ['ALIBABA_CLOUD_ACCESS_KEY_SECRET']
securityToken = os.environ.get('ALIBABA_CLOUD_SECURITY_TOKEN', '') # 可選，使用STS時需要提供
method = 'POST'
body = 'hello world'
url = 'https://xx.cn-shanghai.fcapp.run/hello?foo=bar' # 你的HTTP觸發器地址
date = datetime.utcnow().isoformat('T')[:19]+'Z'
headers = {
'x-acs-date': date,
'x-acs-security-token': securityToken
}
parsedUrl = urlparse(url)
authRequest = TeaRequest()
authRequest.method = method
authRequest.pathname = parsedUrl.path.replace('$', '%24')
authRequest.headers = headers
authRequest.query = {k: v[0] for k, v in parse_qs(parsedUrl.query).items()}
auth = util.get_authorization(authRequest, 'ACS3-HMAC-SHA256', '', accessKeyId, accessKeySecret)
headers['authorization'] = auth
resp = requests.post(url, body, headers=headers)
print(resp.text)
const util = require("@alicloud/openapi-util");
const axios = require('axios');
async function main() {
const accessKeyId = process.env['ALIBABA_CLOUD_ACCESS_KEY_ID'];
const accessKeySecret = process.env['ALIBABA_CLOUD_ACCESS_KEY_SECRET'];
const securityToken = process.env['ALIBABA_CLOUD_SECURITY_TOKEN'] || ''; // 可選，使用STS時需要提供
const method = 'POST';
const body = 'hello world';
const url = 'https://xx.cn-shanghai.fcapp.run/hello?foo=bar' // 你的HTTP觸發器地址
const date = new Date().toISOString();
let headers = {
'x-acs-date': date,
'x-acs-security-token': securityToken
};
const parsedUrl = new URL(url);
const authRequest = {
method: method,
pathname: parsedUrl.pathname.replace('$', '%24'),
headers: headers,
query: Object.fromEntries(parsedUrl.searchParams),
};
console.log('auth: ', authRequest);
const auth = util.default.getAuthorization(authRequest, 'ACS3-HMAC-SHA256', '', accessKeyId, accessKeySecret);
headers['authorization'] = auth;
const resp = await axios.post(url, body, {
headers: headers,
});
console.log('resp: ', resp.data);
}
main().catch(console.error);
package main
import (
"io/ioutil"
"log"
"net/http"
"os"
"strings"
"time"
openapiutil "github.com/alibabacloud-go/openapi-util/service"
"github.com/alibabacloud-go/tea/tea"
)
func main() {
accessKeyId := tea.String(os.Getenv("ALIBABA_CLOUD_ACCESS_KEY_ID"))
accessKeySecret := tea.String(os.Getenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET"))
securityToken := tea.String(os.Getenv("ALIBABA_CLOUD_SECURITY_TOKEN")) // 可選，使用STS時需要提供
method := "POST"
body := "hello world"
url := "https://xx.cn-shanghai.fcapp.run/hello?foo=bar" // 你的HTTP觸發器地址
req, err := http.NewRequest(method, url, strings.NewReader(body))
if err != nil {
log.Printf("new request error: %v", err)
return
}
date := time.Now().UTC().Format(time.RFC3339)
req.Header.Set("x-acs-date", date)
req.Header.Set("x-acs-security-token", *securityToken)
authRequest := &tea.Request{
Method: &method,
Pathname: tea.String(strings.ReplaceAll(req.URL.Path, "$", "%24")),
Headers: make(map[string]*string),
Query: make(map[string]*string),
}
for k := range req.URL.Query() {
authRequest.Query[k] = tea.String(req.URL.Query().Get(k))
}
for k := range req.Header {
authRequest.Headers[k] = tea.String(req.Header.Get(k))
}
auth := openapiutil.GetAuthorization(authRequest, tea.String("ACS3-HMAC-SHA256"), nil, accessKeyId, accessKeySecret)
req.Header.Set("authorization", *auth)
resp, err := http.DefaultClient.Do(req)
if err != nil {
log.Printf("post error: %v", err)
return
}
defer resp.Body.Close()
buf, err := ioutil.ReadAll(resp.Body)
if err != nil {
log.Printf("read body error: %v", err)
return
}
log.Printf("resp: %v, body: %s", resp, string(buf))
}
package com.aliyun.sample;
import org.apache.http.NameValuePair;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import java.net.URI;
import java.nio.charset.StandardCharsets;
import java.time.Instant;
import java.util.HashMap;
import java.util.Map;
import com.aliyun.tea.*;
public class Sample {
public static void main(String[] args_) throws Exception {
String accessKeyId = System.getenv("ALIBABA_CLOUD_ACCESS_KEY_ID");
String accessKeySecret = System.getenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET");
String securityToken = System.getenv("ALIBABA_CLOUD_SECURITY_TOKEN"); // 可選，使用STS時需要提供
if (securityToken == null) {
securityToken = "";
}
String method = "POST";
String body = "hello world";
String url = "https://xx.cn-shanghai.fcapp.run/hello?foo=bar"; // 你的HTTP觸發器地址
Map<String, String> headers = new HashMap<String, String>();
String date = Instant.now().toString();
headers.put("x-acs-date", date);
headers.put("x-acs-security-token", securityToken);
URI uri = new URI(url);
Map<String, String> query = new HashMap<String, String>();
for (NameValuePair pair : URLEncodedUtils.parse(uri, StandardCharsets.UTF_8)) {
query.put(pair.getName(), pair.getValue());
}
TeaRequest req = new TeaRequest();
req.method = method;
req.pathname = uri.getPath().replace("$", "%24");
req.headers = headers;
req.query = query;
String auth = com.aliyun.openapiutil.Client.getAuthorization(
req, "ACS3-HMAC-SHA256", "", accessKeyId, accessKeySecret);
headers.put("authorization", auth);
HttpPost request = new HttpPost(url);
for (Map.Entry<String, String> entry : headers.entrySet()) {
request.setHeader(entry.getKey(), entry.getValue());
}
StringEntity entity = new StringEntity(body);
request.setEntity(entity);
// Execute the request
try (CloseableHttpClient httpClient = HttpClients.createDefault()) {
org.apache.http.HttpResponse response = httpClient.execute(request);
String responseString = EntityUtils.toString(response.getEntity(), StandardCharsets.UTF_8);
System.out.println(responseString);
}
}
}
操作步驟
本文以Go語言為例，示範如何通過簽名訪問HTTP觸發器。
執行
go get github.com/alibabacloud-go/openapi-util/service安裝SDK。在本地準備代碼檔案
main.go。您可以直接使用本文提供的範例程式碼，詳情請參見各語言請求樣本。
執行
go run main.go運行代碼。執行成功後返回結果如下，表示已正確地擷取函數的Response。
2024/02/22 17:21:31 resp: &{200 OK 200 HTTP/1.1 1 1 map[Access-Control-Expose-Headers:[Date,x-fc-request-id] Content-Disposition:[attachment] Content-Length:[14] Content-Type:[text/plain; charset=utf-8] Date:[Thu, 22 Feb 2024 09:21:31 GMT] X-Fc-Request-Id:[1-65d71219-15d63510-fecf237c590c]] 0xc000120040 14 [] false false map[] 0xc000100100 0xc0000e0370}, body: Hello, Golang!
常見問題
為什麼HTTP觸發器開啟簽名認證之後，通過HTTP觸發器訪問函數提示：required HTTP header Date was not specified？
該提示說明認證失敗，可能原因如下：
沒有在請求中進行簽名。
在請求中做了簽名，但是沒有提供Date這個Header。
為什麼HTTP觸發器開啟簽名認證之後，通過HTTP觸發器訪問函數提示：the difference between the request time 'Thu, 04 Jan 2024 01:33:13 GMT' and the current time 'Thu, 04 Jan 2024 08:34:58 GMT' is too large？
該提示說明簽名到期，請您重新使用目前時間進行簽名。
為什麼HTTP觸發器開啟簽名認證之後，通過HTTP觸發器訪問函數提示：The request signature we calculated does not match the signature you provided. Check your access key and signing method？
請求中的簽名與Function Compute計算得到的簽名不一致，認證失敗。