refactor(kinesis-validation): switch to Joi for kinesis validation

Author: erezrokah

lib/apiGateway/schema.js

@@ -68,8 +68,7 @@ const proxy = Joi.object({
   cors,
   authorizationType,
   authorizerId,
-  authorizationScopes,
-  requestParameters
+  authorizationScopes
 })
   .oxor('authorizerId', 'authorizationScopes') // can have one of them, but not required
   .error((errors) => {
@@ -86,13 +85,22 @@ const proxy = Joi.object({
   })
   .required()
 
+const stringOrRef = Joi.alternatives().try([
+  Joi.string(),
+  Joi.object().keys({
+    Ref: Joi.string().required()
+  })
+])
+
 const allowedProxies = ['kinesis', 'sqs', 's3', 'sns']
 
 const proxiesSchemas = {
-  kinesis: Joi.object({ kinesis: proxy.forbiddenKeys('requestParameters') }),
-  s3: Joi.object({ s3: proxy.forbiddenKeys('requestParameters') }),
-  sns: Joi.object({ sns: proxy.forbiddenKeys('requestParameters') }),
-  sqs: Joi.object({ sqs: proxy.optionalKeys('requestParameters') })
+  kinesis: Joi.object({
+    kinesis: proxy.append({ streamName: stringOrRef.required() })
+  }),
+  s3: Joi.object({ s3: proxy }),
+  sns: Joi.object({ sns: proxy }),
+  sqs: Joi.object({ sqs: proxy.append({ requestParameters }) })
 }
 
 const schema = Joi.array()