我正在尝试创建一个API网关,它将采用AWS中的任何方法。调用API后,lambda函数将解析发送的消息,并决定从那里做什么。因此,给定API网关方法:
Type: AWS::ApiGateway::Method
Properties:
RestApiId: !Ref myRestApi
ResourceId: !Ref myResource
HttpMethod: ANY
AuthorizationType: NONE
Integration:
Type: AWS_PROXY
IntegrationHttpMethod: POST
Uri:
Fn::Join:
- ''
- - 'arn:aws:apigateway:'
- Ref: AWS::Region
- :lambda:path/2015-04-30/functions/
- Fn::GetAtt:
- myLambdaFunction
- Arn
- /invocations
并且它将成功调用myLambdaFunction
,我如何在节点get中获得HttpMethod
实际发送的lambda函数?
例如:
exports.handler = (event, context, callback) => {
const response = {
statusCode: 200,
headers: {
"x-custom-header" : "This exists for reasons."
}
};
// I know that event doesn't actually have any httpmethod, but I'm not sure what it does have, or how to use it.
switch(event.httpmethod) {
case "POST":
console.log("POST!!!");
create(event, context, callback);
break;
case "GET":
console.log("GET!!!");
read(event, context, callback);
break;
case "PUT":
console.log("PUT!!!");
update(event, context, callback);
break;
}
上面的lambda,应该能够console.log无论采用哪种方法,但我不知道应该取代event.httpmethod
这是我刚刚编造的东西。
您正在寻找event.httpMethod
(注意CAPITAL M
)酒店。
如果您不确定Lambda事件具有哪些数据,则始终可以使用以下方式记录结果
console.log(event);
并且结果将在与Lambda函数关联的CloudWatch日志中可见。
对于API Gateway和Lambda之间的代理集成,您可以在AWS API Gateway developer guide中找到有关这些事件的特定详细信息:
{
"resource": "Resource path",
"path": "Path parameter",
"httpMethod": "Incoming request's method name"
"headers": {String containing incoming request headers}
"multiValueHeaders": {List of strings containing incoming request headers}
"queryStringParameters": {query string parameters }
"multiValueQueryStringParameters": {List of query string parameters}
"pathParameters": {path parameters}
"stageVariables": {Applicable stage variables}
"requestContext": {Request context, including authorizer-returned key-value pairs}
"body": "A JSON string of the request payload."
"isBase64Encoded": "A boolean flag to indicate if the applicable request payload is Base64-encode"
}
或者在AWS Lambda Developer Guide:
{
"path": "/test/hello",
"headers": {
"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
"Accept-Encoding": "gzip, deflate, lzma, sdch, br",
"Accept-Language": "en-US,en;q=0.8",
"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": "wt6mne2s9k.execute-api.us-west-2.amazonaws.com",
"Upgrade-Insecure-Requests": "1",
"User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.82 Safari/537.36 OPR/39.0.2256.48",
"Via": "1.1 fb7cca60f0ecd82ce07790c9c5eef16c.cloudfront.net (CloudFront)",
"X-Amz-Cf-Id": "nBsWBOrSHMgnaROZJK1wGCZ9PcRcSpq_oSXZNQwQ10OTZL4cimZo3g==",
"X-Forwarded-For": "192.168.100.1, 192.168.1.1",
"X-Forwarded-Port": "443",
"X-Forwarded-Proto": "https"
},
"pathParameters": {
"proxy": "hello"
},
"requestContext": {
"accountId": "123456789012",
"resourceId": "us4z18",
"stage": "test",
"requestId": "41b45ea3-70b5-11e6-b7bd-69b5aaebc7d9",
"identity": {
"cognitoIdentityPoolId": "",
"accountId": "",
"cognitoIdentityId": "",
"caller": "",
"apiKey": "",
"sourceIp": "192.168.100.1",
"cognitoAuthenticationType": "",
"cognitoAuthenticationProvider": "",
"userArn": "",
"userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.82 Safari/537.36 OPR/39.0.2256.48",
"user": ""
},
"resourcePath": "/{proxy+}",
"httpMethod": "GET",
"apiId": "wt6mne2s9k"
},
"resource": "/{proxy+}",
"httpMethod": "GET",
"queryStringParameters": {
"name": "me"
},
"stageVariables": {
"stageVarName": "stageVarValue"
}
}
事件变量是一个给你的lambda得到的json请求。
为了使你的代码工作,你需要将以下json传递给lambda
{
httpmethod : "value"
}
其中值为POST,GET或PUT。
如果您转到按钮操作右侧的控制台,则可以使用事件json输入创建测试。