func()

in lambda/runtime_api_client.go [77:111]

• 31 lines of code
• 6 McCabe index (conditional complexity)

func (c *runtimeAPIClient) next() (*invoke, error) {
	url := c.baseURL + "next"
	req, err := http.NewRequest(http.MethodGet, url, nil)
	if err != nil {
		return nil, fmt.Errorf("failed to construct GET request to %s: %v", url, err)
	}
	req.Header.Set("User-Agent", c.userAgent)

	resp, err := c.httpClient.Do(req)
	if err != nil {
		return nil, fmt.Errorf("failed to get the next invoke: %v", err)
	}
	defer func() {
		if err := resp.Body.Close(); err != nil {
			log.Printf("runtime API client failed to close %s response body: %v", url, err)
		}
	}()

	if resp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf("failed to GET %s: got unexpected status code: %d", url, resp.StatusCode)
	}

	c.buffer.Reset()
	_, err = c.buffer.ReadFrom(resp.Body)
	if err != nil {
		return nil, fmt.Errorf("failed to read the invoke payload: %v", err)
	}

	return &invoke{
		id:      resp.Header.Get(headerAWSRequestID),
		payload: c.buffer.Bytes(),
		headers: resp.Header,
		client:  c,
	}, nil
}