Golang Response.StatusCode方法代码示例

func ExampleLBClient() {
	// Requests will be spread among these servers.
	servers := []string{
		"google.com:80",
		"foobar.com:8080",
		"127.0.0.1:123",
	}

	// Prepare clients for each server
	var lbc fasthttp.LBClient
	for _, addr := range servers {
		c := &fasthttp.HostClient{
			Addr: addr,
		}
		lbc.Clients = append(lbc.Clients, c)
	}

	// Send requests to load-balanced servers
	var req fasthttp.Request
	var resp fasthttp.Response
	for i := 0; i < 10; i++ {
		url := fmt.Sprintf("http://abcedfg/foo/bar/%d", i)
		req.SetRequestURI(url)
		if err := lbc.Do(&req, &resp); err != nil {
			log.Fatalf("Error when sending request: %s", err)
		}
		if resp.StatusCode() != fasthttp.StatusOK {
			log.Fatalf("unexpected status code: %d. Expecting %d", resp.StatusCode(), fasthttp.StatusOK)
		}

		useResponseBody(resp.Body())
	}
}

func (c *Client) run() {
	var resp fasthttp.Response
	r := new(fasthttp.Request)
	c.request.CopyTo(r)
	for range c.Jobsch {
		s := time.Now()
		err := c.Do(r, &resp)
		if err != nil {
			if err == fasthttp.ErrTimeout {
				timeouts.Inc()
			}
			errors.Inc()
			c.withErrorMessage(err.Error()).Inc()
		}

		sc := resp.StatusCode()
		if c.successStatusCode == sc {
			requestSuccess.Inc()
		}

		c.withStatusCode(sc).Inc()
		requestDuration.Observe(float64(time.Since(s).Seconds()))
		requestSum.Inc()
	}
}

func fetchFromUpstream(h *fasthttp.RequestHeader, key []byte) *ybc.Item {
	upstreamUrl := fmt.Sprintf("%s://%s%s", *upstreamProtocol, *upstreamHost, h.RequestURI())
	var req fasthttp.Request
	req.SetRequestURI(upstreamUrl)

	var resp fasthttp.Response
	err := upstreamClient.Do(&req, &resp)
	if err != nil {
		logRequestError(h, "Cannot make request for [%s]: [%s]", key, err)
		return nil
	}

	if resp.StatusCode() != fasthttp.StatusOK {
		logRequestError(h, "Unexpected status code=%d for the response [%s]", resp.StatusCode(), key)
		return nil
	}

	contentType := string(resp.Header.ContentType())
	if contentType == "" {
		contentType = "application/octet-stream"
	}
	body := resp.Body()
	contentLength := len(body)
	itemSize := contentLength + len(contentType) + 1
	txn, err := cache.NewSetTxn(key, itemSize, ybc.MaxTtl)
	if err != nil {
		logRequestError(h, "Cannot start set txn for response [%s], itemSize=%d: [%s]", key, itemSize, err)
		return nil
	}

	if err = storeContentType(h, txn, contentType); err != nil {
		txn.Rollback()
		return nil
	}

	n, err := txn.Write(body)
	if err != nil {
		logRequestError(h, "Cannot read response [%s] body with size=%d to cache: [%s]", key, contentLength, err)
		txn.Rollback()
		return nil
	}
	if n != contentLength {
		logRequestError(h, "Unexpected number of bytes copied=%d from response [%s] to cache. Expected %d", n, key, contentLength)
		txn.Rollback()
		return nil
	}
	item, err := txn.CommitItem()
	if err != nil {
		logRequestError(h, "Cannot commit set txn for response [%s], size=%d: [%s]", key, contentLength, err)
		return nil
	}
	atomic.AddInt64(&stats.BytesReadFromUpstream, int64(n))
	return item
}

func runRequests(b *testing.B, pb *testing.PB, c *fasthttp.HostClient) {
	var req fasthttp.Request
	req.SetRequestURI("http://foo.bar/baz")
	var resp fasthttp.Response
	for pb.Next() {
		if err := c.Do(&req, &resp); err != nil {
			b.Fatalf("unexpected error: %s", err)
		}
		if resp.StatusCode() != fasthttp.StatusOK {
			b.Fatalf("unexpected status code: %d. Expecting %d", resp.StatusCode(), fasthttp.StatusOK)
		}
	}
}