在 api 网关前面的无服务器部署的 lambda 中获取来源 header 的正确方法是什么?
what is the correct way to get the origin header in a serverless deployed lambda fronted by api gateway?
我正在使用无服务器框架在 api 网关后面部署一个简单的 lambda(用 node/express 编写)...
在 GET
中我可以看到 origin
header,但在 POST
中我看不到 - 它没有传递到我的 lambda 函数中!
有人知道为什么不通过以及如何让它通过吗?
背景:
我注意到在 POST
中,源似乎附加到日志中的查询字符串:
originalUrl: '/dev/endpoint?Origin=MY%20ORIGIN%20HERE',
所以,我可以从查询字符串值中提取来源,但我想知道这是否是在无服务器框架上做事的正确方法,还是我应该设置一些东西以允许 API像在 GET
上一样在 POST
上发送原点的网关?为什么这 2 个动词的行为不同?
我的代码/配置:
serverless.yml 中的函数定义如下:
myGetFunction:
handler: lambda/index.handler
events:
- http:
path: /endpoint
method: get
cors: true
myPostFunction:
handler: lambda/index.handler
events:
- http:
path: /endpoint
method: post
cors: true
如果我将以下内容放入 index.handler:
app.use((req, res) => {
console.log('LOG REQUEST', req)
res.send('interesting')
})
在我的处理程序函数中,我只想获取发送的源请求 header。在 GET
中很简单:cloudwatch 日志显示它在 header 的 GET 请求中可用 object:
headers:
{
accept: '*/*',
'accept-encoding': 'gzip, deflate',
'cache-control': 'no-cache',
'cloudfront-forwarded-proto': 'https',
'cloudfront-is-desktop-viewer': 'true',
'cloudfront-is-mobile-viewer': 'false',
'cloudfront-is-smarttv-viewer': 'false',
'cloudfront-is-tablet-viewer': 'false',
'cloudfront-viewer-country': 'GB',
host: 'X.execute-api.us-east-1.amazonaws.com',
origin: 'MY ORIGIN HERE',
但是:在 POST
中所有其他 header 都在那里,但是 origin
是空白的。
我对此进行了一些深入研究,运行 实现了一些认识。
默认情况下,似乎没有 "origin" header 通过 API 网关事件。 (我创建了一个新的无服务器项目,只是回显了 API 网关事件的确切内容。)所以这是来自其他来源。我认为它可能是一个自定义域,并对其进行了测试。没有骰子。
我唯一的其他猜测是,您在为您转发这些 header 的其他层(CloudFront?)后面有这个。如果最终是这种情况,我建议您看看是否可以像 GET
请求一样为 POST
请求转发这些 header。
如果上述 none 为真,我唯一的另一个最终想法是,某些 express 中间件正在发生一些神奇的事情。我怀疑是这种情况。
作为参考,这是我测试的完整 serverless.yml
和 handler.js
以及一个完整的未更改事件 object 我到达终点。
service: so-test
provider:
name: aws
runtime: nodejs8.10
functions:
myGetFunction:
handler: handler.hello
events:
- http:
path: /endpoint
method: get
cors: true
myPostFunction:
handler: handler.hello
events:
- http:
path: /endpoint
method: post
cors: true
和nodejs代码:
'use strict';
module.exports.hello = async (event, context) => {
return {
statusCode: 200,
body: JSON.stringify({
message: 'Go Serverless v1.0! Your function executed successfully!',
input: event,
}),
};
};
终于回复了object
{
"message": "Go Serverless v1.0! Your function executed successfully!",
"input": {
"resource": "/endpoint",
"path": "/test/endpoint",
"httpMethod": "GET",
"headers": {
"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8",
"Accept-Encoding": "gzip, deflate, br",
"Accept-Language": "en-US,en;q=0.9",
"CloudFront-Forwarded-Proto": "https",
"CloudFront-Is-Desktop-Viewer": "true",
"CloudFront-Is-Mobile-Viewer": "false",
"CloudFront-Is-SmartTV-Viewer": "false",
"CloudFront-Is-Tablet-Viewer": "false",
"CloudFront-Viewer-Country": "US",
"Host": "so-test.serverless-examples.com",
"upgrade-insecure-requests": "1",
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36",
"Via": "2.0 f92491812e422470607f365e923929b5.cloudfront.net (CloudFront)",
"X-Amz-Cf-Id": "6AwZPV3uCYxseJIAmsGzhApzRostCiLXwwM3XsbSJP4K8hQx11MSgw==",
"X-Amzn-Trace-Id": "Root=1-5c086dd9-bce03ab0c216116fa6de9786",
"X-Forwarded-For": "55.55.55.555, 70.132.32.155",
"X-Forwarded-Port": "443",
"X-Forwarded-Proto": "https"
},
"multiValueHeaders": {
"Accept": [
"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8"
],
"Accept-Encoding": [
"gzip, deflate, br"
],
"Accept-Language": [
"en-US,en;q=0.9"
],
"CloudFront-Forwarded-Proto": [
"https"
],
"CloudFront-Is-Desktop-Viewer": [
"true"
],
"CloudFront-Is-Mobile-Viewer": [
"false"
],
"CloudFront-Is-SmartTV-Viewer": [
"false"
],
"CloudFront-Is-Tablet-Viewer": [
"false"
],
"CloudFront-Viewer-Country": [
"US"
],
"Host": [
"so-test.serverless-examples.com"
],
"upgrade-insecure-requests": [
"1"
],
"User-Agent": [
"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36"
],
"Via": [
"2.0 f92491812e422470607f365e923929b5.cloudfront.net (CloudFront)"
],
"X-Amz-Cf-Id": [
"6AwZPV3uCYxseJIAmsGzhApzRostCiLXwwM3XsbSJP4K8hQx11MSgw=="
],
"X-Amzn-Trace-Id": [
"Root=1-5c086dd9-bce03ab0c216116fa6de9786"
],
"X-Forwarded-For": [
"55.55.55.555, 70.132.32.155"
],
"X-Forwarded-Port": [
"443"
],
"X-Forwarded-Proto": [
"https"
]
},
"queryStringParameters": null,
"multiValueQueryStringParameters": null,
"pathParameters": null,
"stageVariables": null,
"requestContext": {
"resourceId": "mftg6x",
"resourcePath": "/endpoint",
"httpMethod": "GET",
"extendedRequestId": "RdYZ7HaxoAMFQYQ=",
"requestTime": "06/Dec/2018:00:31:21 +0000",
"path": "/test/endpoint",
"accountId": "800708648372",
"protocol": "HTTP/1.1",
"stage": "dev",
"domainPrefix": "so-test",
"requestTimeEpoch": 1544056281163,
"requestId": "410632a3-f8ee-11e8-a7e2-7d886f93a0e4",
"identity": {
"cognitoIdentityPoolId": null,
"accountId": null,
"cognitoIdentityId": null,
"caller": null,
"sourceIp": "55.55.55.555",
"accessKey": null,
"cognitoAuthenticationType": null,
"cognitoAuthenticationProvider": null,
"userArn": null,
"userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36",
"user": null
},
"domainName": "so-test.serverless-examples.com",
"apiId": "txctij0cnp"
},
"body": null,
"isBase64Encoded": false
}
}
我正在使用无服务器框架在 api 网关后面部署一个简单的 lambda(用 node/express 编写)...
在 GET
中我可以看到 origin
header,但在 POST
中我看不到 - 它没有传递到我的 lambda 函数中!
有人知道为什么不通过以及如何让它通过吗?
背景:
我注意到在 POST
中,源似乎附加到日志中的查询字符串:
originalUrl: '/dev/endpoint?Origin=MY%20ORIGIN%20HERE',
所以,我可以从查询字符串值中提取来源,但我想知道这是否是在无服务器框架上做事的正确方法,还是我应该设置一些东西以允许 API像在 GET
上一样在 POST
上发送原点的网关?为什么这 2 个动词的行为不同?
我的代码/配置:
serverless.yml 中的函数定义如下:
myGetFunction:
handler: lambda/index.handler
events:
- http:
path: /endpoint
method: get
cors: true
myPostFunction:
handler: lambda/index.handler
events:
- http:
path: /endpoint
method: post
cors: true
如果我将以下内容放入 index.handler:
app.use((req, res) => {
console.log('LOG REQUEST', req)
res.send('interesting')
})
在我的处理程序函数中,我只想获取发送的源请求 header。在 GET
中很简单:cloudwatch 日志显示它在 header 的 GET 请求中可用 object:
headers:
{
accept: '*/*',
'accept-encoding': 'gzip, deflate',
'cache-control': 'no-cache',
'cloudfront-forwarded-proto': 'https',
'cloudfront-is-desktop-viewer': 'true',
'cloudfront-is-mobile-viewer': 'false',
'cloudfront-is-smarttv-viewer': 'false',
'cloudfront-is-tablet-viewer': 'false',
'cloudfront-viewer-country': 'GB',
host: 'X.execute-api.us-east-1.amazonaws.com',
origin: 'MY ORIGIN HERE',
但是:在 POST
中所有其他 header 都在那里,但是 origin
是空白的。
我对此进行了一些深入研究,运行 实现了一些认识。
默认情况下,似乎没有 "origin" header 通过 API 网关事件。 (我创建了一个新的无服务器项目,只是回显了 API 网关事件的确切内容。)所以这是来自其他来源。我认为它可能是一个自定义域,并对其进行了测试。没有骰子。
我唯一的其他猜测是,您在为您转发这些 header 的其他层(CloudFront?)后面有这个。如果最终是这种情况,我建议您看看是否可以像 GET
请求一样为 POST
请求转发这些 header。
如果上述 none 为真,我唯一的另一个最终想法是,某些 express 中间件正在发生一些神奇的事情。我怀疑是这种情况。
作为参考,这是我测试的完整 serverless.yml
和 handler.js
以及一个完整的未更改事件 object 我到达终点。
service: so-test
provider:
name: aws
runtime: nodejs8.10
functions:
myGetFunction:
handler: handler.hello
events:
- http:
path: /endpoint
method: get
cors: true
myPostFunction:
handler: handler.hello
events:
- http:
path: /endpoint
method: post
cors: true
和nodejs代码:
'use strict';
module.exports.hello = async (event, context) => {
return {
statusCode: 200,
body: JSON.stringify({
message: 'Go Serverless v1.0! Your function executed successfully!',
input: event,
}),
};
};
终于回复了object
{
"message": "Go Serverless v1.0! Your function executed successfully!",
"input": {
"resource": "/endpoint",
"path": "/test/endpoint",
"httpMethod": "GET",
"headers": {
"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8",
"Accept-Encoding": "gzip, deflate, br",
"Accept-Language": "en-US,en;q=0.9",
"CloudFront-Forwarded-Proto": "https",
"CloudFront-Is-Desktop-Viewer": "true",
"CloudFront-Is-Mobile-Viewer": "false",
"CloudFront-Is-SmartTV-Viewer": "false",
"CloudFront-Is-Tablet-Viewer": "false",
"CloudFront-Viewer-Country": "US",
"Host": "so-test.serverless-examples.com",
"upgrade-insecure-requests": "1",
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36",
"Via": "2.0 f92491812e422470607f365e923929b5.cloudfront.net (CloudFront)",
"X-Amz-Cf-Id": "6AwZPV3uCYxseJIAmsGzhApzRostCiLXwwM3XsbSJP4K8hQx11MSgw==",
"X-Amzn-Trace-Id": "Root=1-5c086dd9-bce03ab0c216116fa6de9786",
"X-Forwarded-For": "55.55.55.555, 70.132.32.155",
"X-Forwarded-Port": "443",
"X-Forwarded-Proto": "https"
},
"multiValueHeaders": {
"Accept": [
"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8"
],
"Accept-Encoding": [
"gzip, deflate, br"
],
"Accept-Language": [
"en-US,en;q=0.9"
],
"CloudFront-Forwarded-Proto": [
"https"
],
"CloudFront-Is-Desktop-Viewer": [
"true"
],
"CloudFront-Is-Mobile-Viewer": [
"false"
],
"CloudFront-Is-SmartTV-Viewer": [
"false"
],
"CloudFront-Is-Tablet-Viewer": [
"false"
],
"CloudFront-Viewer-Country": [
"US"
],
"Host": [
"so-test.serverless-examples.com"
],
"upgrade-insecure-requests": [
"1"
],
"User-Agent": [
"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36"
],
"Via": [
"2.0 f92491812e422470607f365e923929b5.cloudfront.net (CloudFront)"
],
"X-Amz-Cf-Id": [
"6AwZPV3uCYxseJIAmsGzhApzRostCiLXwwM3XsbSJP4K8hQx11MSgw=="
],
"X-Amzn-Trace-Id": [
"Root=1-5c086dd9-bce03ab0c216116fa6de9786"
],
"X-Forwarded-For": [
"55.55.55.555, 70.132.32.155"
],
"X-Forwarded-Port": [
"443"
],
"X-Forwarded-Proto": [
"https"
]
},
"queryStringParameters": null,
"multiValueQueryStringParameters": null,
"pathParameters": null,
"stageVariables": null,
"requestContext": {
"resourceId": "mftg6x",
"resourcePath": "/endpoint",
"httpMethod": "GET",
"extendedRequestId": "RdYZ7HaxoAMFQYQ=",
"requestTime": "06/Dec/2018:00:31:21 +0000",
"path": "/test/endpoint",
"accountId": "800708648372",
"protocol": "HTTP/1.1",
"stage": "dev",
"domainPrefix": "so-test",
"requestTimeEpoch": 1544056281163,
"requestId": "410632a3-f8ee-11e8-a7e2-7d886f93a0e4",
"identity": {
"cognitoIdentityPoolId": null,
"accountId": null,
"cognitoIdentityId": null,
"caller": null,
"sourceIp": "55.55.55.555",
"accessKey": null,
"cognitoAuthenticationType": null,
"cognitoAuthenticationProvider": null,
"userArn": null,
"userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36",
"user": null
},
"domainName": "so-test.serverless-examples.com",
"apiId": "txctij0cnp"
},
"body": null,
"isBase64Encoded": false
}
}