Method post

fe/src/test/java/org/apache/impala/testutil/WebClient.java:147–165

Does a POST request at path of the Impala web server and returns response. If the response does not include the expected status code, returns null. @param path URI path to query @param headers Headers to include in the POST; can be null @param params Parameters to include in the POST; can be null @p

(String path, Header[] headers, List<NameValuePair> params, int code)

   * @throws IOException if the request fails
   */
  public String post(String path, Header[] headers, List<NameValuePair> params, int code)
      throws IOException {
    HttpHost target = new HttpHost(WEBSERVER_HOST, port_, "http");
    HttpClientContext context = getContext(target);

    HttpPost post = new HttpPost(path);
    if (headers != null) {
      post.setHeaders(headers);
    }
    if (params != null) {
      post.setEntity(new UrlEncodedFormEntity(params));
    }
    try (CloseableHttpResponse response = httpClient_.execute(target, post, context)) {
      if (response.getStatusLine().getStatusCode() != code) {
        return null;
      }
      return EntityUtils.toString(response.getEntity());
    }
  }

  private HttpClientContext getContext(HttpHost targetHost) {
    HttpClientContext context = HttpClientContext.create();