使用SDK执行HTTP函数_函数计算-阿里云帮助中心

本文介绍如何使用不同语言SDK提供的接口，执行HTTP触发器函数。

背景信息

函数计算根据请求头部的Authorization字段校验每一个请求是否合法。只有使用与函数计算一致的签名算法才能通过验证，未包含签名字段或者签名错误的请求，函数计算将返回HTTP 403错误。关于签名算法的更多信息，请参见签名认证。

函数计算的SDK已经提供接口执行HTTP函数，且SDK已经实现签名算法，支持对该接口进行签名，无需您手动计算签名。更多信息，请参见SDK列表。

说明如果HTTP触发器设置了允许匿名访问函数，即触发器配置中参数是否需要认证选择为否，则无需校验，也无需计算签名。

使用场景

函数计算的Golang，Python和Java语言支持HTTP触发器的签名调用。您可以在以下三种场景，使用函数计算的SDK。

签名场景下调用HTTP触发器。推荐在测试场景中使用。
匿名场景下调用HTTP触发器。推荐在测试场景中使用。
集成场景下对HTTP Request进行签名，然后使用自定义HTTP Client处理签名后的请求，以达到最优的性能以及最佳的扩展性。推荐在生产环境中使用。

使用示例

Golang

更多信息，请参见Golang。

安装

使用go mod工具安装。

# install alibabacloud_fc_open20210406
go get -u github.com/alibabacloud-go/fc-open-20210406

使用

签名场景

package main

import (
    "fmt"
    "net/http"
    "net/http/httputil"
    "os"

    openapi "github.com/alibabacloud-go/darabonba-openapi/v2/client"
    client "github.com/alibabacloud-go/fc-open-20210406/client"

)

func main() {
    config := &openapi.Config{}
    ak := os.Getenv("ak")
    sk := os.Getenv("sk")
    url := os.Getenv("url")

    config.SetAccessKeyId(ak)
    config.SetAccessKeySecret(sk)
    config.SetRegionId("cn-hangzhou")
    c, err := client.NewClient(config)
    if err != nil {
        panic(err)
    }
    method := "POST"
    headers := &http.Header{}
    headers.Add("k1", "v1")
    resp, err := c.InvokeHTTPTrigger(&url, &method, []byte("abc"), headers)
    if err != nil {
        panic(err)
    }
    str, _ := httputil.DumpResponse(resp, true)
    fmt.Printf("response: %+v\n", string(str))
}

匿名场景

package main

import (
    "fmt"
    "net/http"
    "net/http/httputil"
    "os"

    openapi "github.com/alibabacloud-go/darabonba-openapi/v2/client"
    client "github.com/alibabacloud-go/fc-open-20210406/client"
)

func main() {
    config := &openapi.Config{}
    ak := "dummy-ak"
    sk := "dummy-sk"
    url := os.Getenv("url")

    config.SetAccessKeyId(ak)
    config.SetAccessKeySecret(sk)
    config.SetRegionId("cn-hangzhou")
    c, err := client.NewClient(config)
    if err != nil {
        panic(err)
    }
    method := "POST"
    headers := &http.Header{}
    headers.Add("k1", "v1")
    resp, err := c.InvokeAnonymousHTTPTrigger(&url, &method, []byte("abc"), headers)
    if err != nil {
        panic(err)
    }
    str, _ := httputil.DumpResponse(resp, true)
    fmt.Printf("response: %+v\n", string(str))
}

集成场景

package main

import (
    "fmt"
    "net/http"
    "net/http/httputil"
    "os"

    client "github.com/alibabacloud-go/fc-open-20210406/v2/client"
    openapi "github.com/alibabacloud-go/darabonba-openapi/client"
)

func main() {
    config := &openapi.Config{}
    ak := os.Getenv("ak")
    sk := os.Getenv("sk")
    url := os.Getenv("url")

    config.SetAccessKeyId(ak)
    config.SetAccessKeySecret(sk)
    config.SetRegionId("cn-hangzhou")
    c, err := client.NewClient(config)
    if err != nil {
        panic(err)
    }
    method := "GET"
    request, err := http.NewRequest(method, url, nil)
    if err != nil {
        panic(err)
    }
    request, err = c.SignRequest(request)
    if err != nil {
        panic(err)
    }
    resp, err := http.DefaultClient.Do(request)
    if err != nil {
        panic(err)
    }
    str, _ := httputil.DumpResponse(resp, true)
    fmt.Printf("response: %+v\n", string(str))
}

Python

更多信息，请参见Python。

安装

使用pip工具安装。

# install alibabacloud_fc_open20210406
pip install -U alibabacloud_fc_open20210406

使用

签名场景

# -*- coding: utf-8 -*-
import os

from alibabacloud_fc_open20210406.client import Client
from alibabacloud_tea_openapi import models as open_api_models

ak = os.getenv('ak')
sk = os.getenv('sk')
url = os.getenv('url')

client = Client(config=open_api_models.Config(access_key_id=ak,
                                              access_key_secret=sk,
                                              region_id='cn-hangzhou'))

resp = client.invoke_httptrigger(url=url,
                                 method="GET",
                                 body="anything".encode(encoding='utf-8'),
                                 headers={"k1": "v1", "k2": "v2"})

匿名场景

import os

from alibabacloud_fc_open20210406.client import Client
from alibabacloud_tea_openapi import models as open_api_models

ak = os.getenv('ak')
sk = os.getenv('sk')
url = os.getenv('url')

client = Client(config=open_api_models.Config(access_key_id=ak,
                                              access_key_secret=sk,
                                              region_id='cn-hangzhou'))

resp = client.invoke_anonymous_httptrigger(url=url,
                                 method="GET",
                                 body="anything".encode(encoding='utf-8'),
                                 headers={"k1": "v1", "k2": "v2"})

集成场景

import requests
import os

from alibabacloud_fc_open20210406.client import Client
from alibabacloud_tea_openapi import models as open_api_models

ak = os.getenv('ak')
sk = os.getenv('sk')
url = os.getenv('url')

client = Client(config=open_api_models.Config(access_key_id=ak,
                                              access_key_secret=sk,
                                              region_id='cn-hangzhou'))

# build your own request
req = requests.Request(
    url=url,
    method='GET'
)
req = client.sign_request(req)
with requests.Session() as s:
    prep=s.prepare_request(req)
    resp = s.send(prep)

Java

更多信息，请参见Java。

安装

使用Maven工具或Gradle工具管理依赖，Maven依赖坐标如下。

<dependency>
  <groupId>com.aliyun</groupId>
  <artifactId>fc_open20210406</artifactId>
  <!-- use the latest version instead -->
  <version>2.0.4</version>
</dependency>

使用

签名场景

package com.aliyun.example;

import com.aliyun.fc_open20210406.Client;
import com.aliyun.teaopenapi.models.Config;
import okhttp3.Headers;
import okhttp3.Response;

import java.nio.charset.StandardCharsets;


public class Main {
    public static void main(String[] args) throws Exception {
        String ak = System.getenv("ak");
        String sk = System.getenv("sk");
        String url = System.getenv("url");
        Config config = new Config().setAccessKeyId(ak).setAccessKeySecret(sk).setRegionId("cn-hangzhou");

        Client client = new Client(config);
        try (Response res = client.InvokeHTTPTrigger(url, "POST", "mybodystring".getBytes(StandardCharsets.UTF_8), new Headers.Builder().build())) {
            System.out.println(res.toString());
            System.out.println(res.body().string());
        }
    }
}

匿名场景

package com.aliyun.example;

import com.aliyun.fc_open20210406.Client;
import com.aliyun.teaopenapi.models.Config;
import okhttp3.Headers;
import okhttp3.Response;

import java.nio.charset.StandardCharsets;

public class Main {
    public static void main(String[] args) throws Exception {
        String ak = System.getenv("ak");
        String sk = System.getenv("sk");
        String url = System.getenv("url");
        Config config = new Config().setAccessKeyId(ak).setAccessKeySecret(sk).setRegionId("cn-hangzhou");

        Client client = new Client(config);
        try (Response res = client.InvokeAnonymousHTTPTrigger(url, "POST", "mybodystring".getBytes(StandardCharsets.UTF_8), new Headers.Builder().build())) {
            System.out.println(res.toString());
            System.out.println(res.body().string());
        }
    }
}

集成场景

package com.aliyun.example;

import com.aliyun.fc_open20210406.Client;
import com.aliyun.tea.okhttp.OkHttpClientBuilder;
import com.aliyun.teaopenapi.models.Config;
import okhttp3.*;

import java.nio.charset.StandardCharsets;


public class Main {
    public static void main(String[] args) throws Exception {
        String ak = System.getenv("ak");
        String sk = System.getenv("sk");
        String url = System.getenv("url");
        Config config = new Config().setAccessKeyId(ak).setAccessKeySecret(sk).setRegionId("cn-hangzhou");

        Client client = new Client(config);
        OkHttpClient okHttpClient = new OkHttpClientBuilder().buildOkHttpClient();

        Request request = new Request.Builder()
                .url(url)
                .post(RequestBody.create(MediaType.parse("application/json"),
                        "mybodystring".getBytes(StandardCharsets.UTF_8)))
                .build();

        // sign your request
        request = client.SignRequest(request);
        try (Response res = okHttpClient.newCall(request).execute()) {
            System.out.println(res.toString());
            System.out.println(res.body().string());
        }
    }
}