NPE when deleting Cognito User Group

[tvanhens]

When using the most up to date dependencies:

{org.clojure/clojure {:mvn/version "1.9.0"}

 com.cognitect.aws/api         {:mvn/version "0.8.273"}
 com.cognitect.aws/cognito-idp {:mvn/version "697.2.391.0"}
 com.cognitect.aws/endpoints   {:mvn/version "1.1.11.507"}}

Cognito-idp :DeleteGroup fails in the following minimal example:

(require '[cognitect.aws.client.api :as caws])

(caws/invoke (caws/client {:api :cognito-idp})
             {:op     :CreateGroup
              :request {:GroupName  "test"
                        :UserPoolId (user-pool-id)}})

(caws/invoke (caws/client {:api :cognito-idp})
             {:op     :DeleteGroup
              :request {:GroupName  "test"
                        :UserPoolId (user-pool-id)}})

With the following exception:

{:cognitect.anomalies/category :cognitect.anomalies/fault,
 :cognitect.aws.client/throwable #error {
 :cause nil
 :via
 [{:type java.lang.NullPointerException
   :message nil
   :at [java.io.StringReader <init> "StringReader.java" 50]}]
 :trace
 [[java.io.StringReader <init> "StringReader.java" 50]
  [clojure.data.json$read_str invokeStatic "json.clj" 278]
  [clojure.data.json$read_str doInvoke "json.clj" 274]
  [clojure.lang.RestFn invoke "RestFn.java" 439]
  [cognitect.aws.shape$json_parse invokeStatic "shape.clj" 198]
  [cognitect.aws.shape$json_parse invoke "shape.clj" 195]
  [cognitect.aws.protocols.json$eval16637$fn__16640 invoke "json.clj" 47]
  [clojure.lang.MultiFn invoke "MultiFn.java" 238]
  [cognitect.aws.client$handle_http_response invokeStatic "client.clj" 46]
  [cognitect.aws.client$handle_http_response invoke "client.clj" 40]
  [cognitect.aws.client$send_request$fn__15740 invoke "client.clj" 67]
  [clojure.core$map$fn__5583$fn__5584 invoke "core.clj" 2734]
  [clojure.core.async.impl.channels$chan$fn__5800 invoke "channels.clj" 300]
  [clojure.core.async.impl.channels.ManyToManyChannel put_BANG_ "channels.clj" 83]
  [clojure.core.async$put_BANG_ invokeStatic "async.clj" 165]
  [clojure.core.async$put_BANG_ invoke "async.clj" 158]
  [cognitect.http_client.Client$fn$reify__14362 onComplete "http_client.clj" 236]
  [org.eclipse.jetty.client.ResponseNotifier notifyComplete "ResponseNotifier.java" 193]
  [org.eclipse.jetty.client.ResponseNotifier notifyComplete "ResponseNotifier.java" 185]
  [org.eclipse.jetty.client.HttpReceiver terminateResponse "HttpReceiver.java" 454]
  [org.eclipse.jetty.client.HttpReceiver responseSuccess "HttpReceiver.java" 401]
  [org.eclipse.jetty.client.http.HttpReceiverOverHTTP messageComplete "HttpReceiverOverHTTP.java" 268]
  [org.eclipse.jetty.http.HttpParser parseHeaders "HttpParser.java" 957]
  [org.eclipse.jetty.http.HttpParser parseNext "HttpParser.java" 1188]
  [org.eclipse.jetty.client.http.HttpReceiverOverHTTP parse "HttpReceiverOverHTTP.java" 158]
  [org.eclipse.jetty.client.http.HttpReceiverOverHTTP process "HttpReceiverOverHTTP.java" 119]
  [org.eclipse.jetty.client.http.HttpReceiverOverHTTP receive "HttpReceiverOverHTTP.java" 69]
  [org.eclipse.jetty.client.http.HttpChannelOverHTTP receive "HttpChannelOverHTTP.java" 90]
  [org.eclipse.jetty.client.http.HttpConnectionOverHTTP onFillable "HttpConnectionOverHTTP.java" 113]
  [org.eclipse.jetty.io.AbstractConnection$ReadCallback succeeded "AbstractConnection.java" 273]
  [org.eclipse.jetty.io.FillInterest fillable "FillInterest.java" 95]
  [org.eclipse.jetty.io.ssl.SslConnection onFillable "SslConnection.java" 197]
  [org.eclipse.jetty.io.AbstractConnection$ReadCallback succeeded "AbstractConnection.java" 273]
  [org.eclipse.jetty.io.FillInterest fillable "FillInterest.java" 95]
  [org.eclipse.jetty.io.SelectChannelEndPoint$2 run "SelectChannelEndPoint.java" 75]
  [org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume produceAndRun "ExecuteProduceConsume.java" 213]
  [org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume run "ExecuteProduceConsume.java" 147]
  [org.eclipse.jetty.util.thread.QueuedThreadPool runJob "QueuedThreadPool.java" 654]
  [org.eclipse.jetty.util.thread.QueuedThreadPool$3 run "QueuedThreadPool.java" 572]
  [java.lang.Thread run "Thread.java" 748]]}}

[dchelimsky]

Fixed in 0.8.280.