go_handler.go

func handleRequest(c *gin.Context) {

  userObj := map[string]string{"userId": "user123"}
  jsonString, _ := json.Marshal(userObj)

  req, _ := http.NewRequest("POST", "http://localhost:8080/v1/activate", bytes.NewBuffer(jsonString))

  q := req.URL.Query()
  q.Add("featureKey", "hello_world")

  req.URL.RawQuery = q.Encode()
  req.Header.Add("X-Optimizely-SDK-Key", "DHbTLoxuXmGPHCTGbrSGKP")

  client := &http.Client{}
  resp, _ := client.Do(req)

  defer resp.Body.Close()

  var results []map[string]interface{}
  json.NewDecoder(resp.Body).Decode(&results)

  var enabled bool
  enabled = results[0]["enabled"].(bool)

  var message string
  if enabled {
    message = "Feature is ON!"
  } else {
    message = "Feature is off :("
  }

  c.JSON(200, gin.H{
    "Go Service": message,
  })
}

python_handler.py

def hello_world():
    sdk_key = 'DHbTLoxuXmGPHCTGbrSGKP'

    s = requests.Session()
    s.headers.update({'X-Optimizely-SDK-Key': sdk_key})

    payload = {
      "userId": "user123",
    }

    params = {
      "featureKey": "hello_world"
    }

    resp = s.post(url = 'http://localhost:8080/v1/activate', params=params, json=payload)
    feature_result = resp.json()[0]

    print(json.dumps(feature_result, indent=2))

    feature_text = "Feature is ON!" if feature_result['enabled'] else "Feature is off :("

    return 'Python Service: ' + feature_text