问题
I would like to use Api gateway as http proxy of my API restful. I use Cognito to authorize the access to the API gateway as well as my endopoint. I think to use the cognito identity id to identify the user but I don't know how pass this context variable to the backend for each request (GET, POST, PUT...)
Can you help me?
Thank you Agostino
回答1:
Define a request mapping template and use "$context.identity.cognitoIdentityId" to get the cognito identity ID.
i.e.
{
"cognito-identity" : "$context.identity.cognitoIdentityId"
}
This will send the identity ID in the request body.
You could also send in a HTTP parameter by using "context.identity.cognitoIdentityId" in your parameter mapping expression.
See also: http://docs.aws.amazon.com/apigateway/latest/developerguide/api-gateway-mapping-template-reference.html
来源：https://stackoverflow.com/questions/37125500/how-to-pass-cognito-identity-id-to-backend