我正在尝试从API Gateway端点代理配置为网站的S3存储桶。我已经成功地使用控制台配置了端点，但是我无法使用Cloudformation重新创建该配置。
在大量的尝试和猜测之后，我得出了以下CF堆栈模板，它使我接近成功：
Resources:
Api:
Type: 'AWS::ApiGateway::RestApi'
Properties:
Name: ApiDocs
Resource:
Type: 'AWS::ApiGateway::Resource'
Properties:
ParentId: !GetAtt Api.RootResourceId
RestApiId: !Ref Api
PathPart: '{proxy+}'
RootMethod:
Type: 'AWS::ApiGateway::Method'
Properties:
HttpMethod: ANY
ResourceId: !GetAtt Api.RootResourceId
RestApiId: !Ref Api
AuthorizationType: NONE
Integration:
IntegrationHttpMethod: ANY
Type: HTTP_PROXY
Uri: 'http://my-bucket.s3-website-${AWS::Region}.amazonaws.com/'
PassthroughBehavior: WHEN_NO_MATCH
IntegrationResponses:
- StatusCode: 200
ProxyMethod:
Type: 'AWS::ApiGateway::Method'
Properties:
HttpMethod: ANY
ResourceId: !Ref Resource
RestApiId: !Ref Api
AuthorizationType: NONE
RequestParameters:
method.request.path.proxy: true
Integration:
CacheKeyParameters:
- 'method.request.path.proxy'
RequestParameters:
integration.request.path.proxy: 'method.request.path.proxy'
IntegrationHttpMethod: ANY
Type: HTTP_PROXY
Uri: 'http://my-bucket.s3-website-${AWS::Region}.amazonaws.com/{proxy}'
PassthroughBehavior: WHEN_NO_MATCH
IntegrationResponses:
- StatusCode: 200
Deployment:
DependsOn:
- RootMethod
- ProxyMethod
Type: 'AWS::ApiGateway::Deployment'
Properties:
RestApiId: !Ref Api
StageName: dev
使用这个模板，我可以成功获取存储桶网站的根目录，但代理资源却返回500错误：
curl -i https://abcdef.execute-api.eu-west-1.amazonaws.com/dev/index.html
HTTP/1.1 500 Internal Server Error
Content-Type: application/json
Content-Length: 36
Connection: keep-alive
Date: Mon, 11 Dec 2017 16:36:02 GMT
x-amzn-RequestId: 6014a809-de91-11e7-95e4-dda6e24d156a
X-Cache: Error from cloudfront
Via: 1.1 8f6f9aba914cc74bcbbf3c57e10df26a.cloudfront.net (CloudFront)
X-Amz-Cf-Id: TlOCX3eemHfY0aiVk9MLCp4qFzUEn5I0QUTIPkh14o6-nh7YAfUn5Q==
{"message": "Internal server error"}
我不知道如何调试那个 500 错误。
为了追踪问题，我将手动在控制台创建的资源（正常工作）与 Cloudformation 创建的资源（不正常工作）上运行aws apigateway get-resource命令进行比较。这些资源看起来完全一样。然而，get-method的输出略有不同，我不确定使用 Cloudformation 是否可能使它们完全相同。
正常工作的方法配置：
{
"apiKeyRequired": false,
"httpMethod": "ANY",
"methodIntegration": {
"integrationResponses": {
"200": {
"responseTemplates": {
"application/json": null
},
"statusCode": "200"
}
},
"passthroughBehavior": "WHEN_NO_MATCH",
"cacheKeyParameters": [
"method.request.path.proxy"
],
"requestParameters": {
"integration.request.path.proxy": "method.request.path.proxy"
},
"uri": "http://muybucket.s3-website-eu-west-1.amazonaws.com/{proxy}",
"httpMethod": "ANY",
"cacheNamespace": "abcdefg",
"type": "HTTP_PROXY"
},
"requestParameters": {
"method.request.path.proxy": true
},
"authorizationType": "NONE"
}
不能正常工作的配置：
{
"apiKeyRequired": false,
"httpMethod": "ANY",
"methodIntegration": {
"integrationResponses": {
"200": {
"responseParameters": {},
"responseTemplates": {},
"statusCode": "200"
}
},
"passthroughBehavior": "WHEN_NO_MATCH",
"cacheKeyParameters": [
"method.request.path.proxy"
],
"requestParameters": {
"integration.request.path.proxy": "method.request.path.proxy"
},
"uri": "http://mybucket.s3-website-eu-west-1.amazonaws.com/{proxy}",
"httpMethod": "ANY",
"requestTemplates": {},
"cacheNamespace": "abcdef",
"type": "HTTP_PROXY"
},
"requestParameters": {
"method.request.path.proxy": true
},
"requestModels": {},
"authorizationType": "NONE"
}
区别：
- 可工作的配置将
responseTemplates设置为"application/json": null。据我所知，无法使用Cloudformation显式地将映射设置为null。我的CF方法在此处只有一个空对象。 - 我的CF方法具有
"responseParameters": {}，而可工作的配置根本没有responseParameters - 我的CF方法具有
"requestModels": {}，而可工作的配置根本没有requestModels
在控制台中比较这两个配置，它们看起来完全相同。
我已经不知道该怎么办了：我做错了什么？是否可能使用Cloudformation实现这个目标？