HTTPoison

gistfile1.txt

Assuming HTTPoison.get produces this on a Failed API call 

[:ok,
 %HTTPoison.Response{body: "{\"ACTION\":\"avail.datacenters\",\"DATA\":{},\"ERRORARRAY\":[{\"ERRORMESSAGE\":\"Authentication failed\",\"ERRORCODE\":4}]}",
  headers: [{"Server", "nginx"}, {"Date", "Sat, 08 Apr 2017 18:13:06 GMT"},
   {"Content-Type", "application/json;charset=UTF-8"},
   {"Transfer-Encoding", "chunked"}, {"Connection", "keep-alive"},
   {"X-Powered-By", "Tiger Blood"}, {"Access-Control-Allow-Origin", "*"},
   {"Strict-Transport-Security", "max-age=31536000"}], status_code: 200}]

 and a Correct API call produces 

 {:ok,
 %HTTPoison.Response{body: "{\"ACTION\":\"avail.datacenters\",\"DATA\":[{\"LOCATION\":\"Dallas, TX, USA\",\"DATACENTERID\":2,\"ABBR\":\"dallas\"},{\"LOCATION\":\"Fremont, CA, USA\",\"DATACENTERID\":3,\"ABBR\":\"fremont\"},{\"LOCATION\":\"Atlanta, GA, USA\",\"DATACENTERID\":4,\"ABBR\":\"atlanta\"},{\"LOCATION\":\"Newark, NJ, USA\",\"DATACENTERID\":6,\"ABBR\":\"newark\"},{\"LOCATION\":\"London, England, UK\",\"DATACENTERID\":7,\"ABBR\":\"london\"},{\"LOCATION\":\"Tokyo, JP\",\"DATACENTERID\":8,\"ABBR\":\"tokyo\"},{\"LOCATION\":\"Singapore, SG\",\"DATACENTERID\":9,\"ABBR\":\"singapore\"},{\"LOCATION\":\"Frankfurt, DE\",\"DATACENTERID\":10,\"ABBR\":\"frankfurt\"},{\"LOCATION\":\"Tokyo 2, JP\",\"DATACENTERID\":11,\"ABBR\":\"shinagawa1\"}],\"ERRORARRAY\":[]}",
  headers: [{"Server", "nginx"}, {"Date", "Sat, 08 Apr 2017 18:31:09 GMT"},
   {"Content-Type", "application/json;charset=UTF-8"},
   {"Transfer-Encoding", "chunked"}, {"Connection", "keep-alive"},
   {"X-Powered-By", "Tiger Blood"}, {"Access-Control-Allow-Origin", "*"},
   {"Strict-Transport-Security", "max-age=31536000"}], status_code: 200}}


Please how would i pattern match knowing that both the failed request and "Correct" one both return 
{:ok, %HTTPoison.Response{status_code: 200}}