// List method retrieves heartbeats from OpsGenie. func (cli *OpsGenieHeartbeatClient) List(req heartbeat.ListHeartbeatsRequest) (*heartbeat.ListHeartbeatsResponse, error) { req.APIKey = cli.apiKey resp, err := cli.sendRequest(cli.buildGetRequest(listHeartbeatURL, req)) if resp == nil { return nil, err } defer resp.Body.Close() var listHeartbeatsResp heartbeat.ListHeartbeatsResponse if err = resp.Body.FromJsonTo(&listHeartbeatsResp); err != nil { message := "Server response can not be parsed, " + err.Error() logging.Logger().Warn(message) return nil, errors.New(message) } return &listHeartbeatsResp, nil }