| // |
| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| // |
| |
| package com.cloud.utils.net; |
| |
| import org.apache.commons.httpclient.HttpClient; |
| import org.apache.commons.httpclient.HttpMethod; |
| import org.apache.commons.httpclient.HttpMethodRetryHandler; |
| import org.apache.commons.httpclient.HttpStatus; |
| import org.apache.commons.httpclient.MultiThreadedHttpConnectionManager; |
| import org.apache.commons.httpclient.NoHttpResponseException; |
| import org.apache.commons.httpclient.UsernamePasswordCredentials; |
| import org.apache.commons.httpclient.auth.AuthScope; |
| import org.apache.logging.log4j.Logger; |
| import org.apache.logging.log4j.LogManager; |
| |
| import java.io.IOException; |
| |
| public final class HTTPUtils { |
| |
| protected static Logger LOGGER = LogManager.getLogger(HTTPUtils.class); |
| |
| // The connection manager. |
| private static final MultiThreadedHttpConnectionManager s_httpClientManager = new MultiThreadedHttpConnectionManager(); |
| |
| private HTTPUtils() {} |
| |
| public static HttpClient getHTTPClient() { |
| return new HttpClient(s_httpClientManager); |
| } |
| |
| /** |
| * @return A HttpMethodRetryHandler with given number of retries. |
| */ |
| public static HttpMethodRetryHandler getHttpMethodRetryHandler(final int retryCount) { |
| |
| if (LOGGER.isDebugEnabled()) { |
| LOGGER.debug("Initializing new HttpMethodRetryHandler with retry count " + retryCount); |
| } |
| |
| return new HttpMethodRetryHandler() { |
| @Override |
| public boolean retryMethod(final HttpMethod method, final IOException exception, int executionCount) { |
| if (executionCount >= retryCount) { |
| // Do not retry if over max retry count |
| return false; |
| } |
| if (exception instanceof NoHttpResponseException) { |
| // Retry if the server dropped connection on us |
| return true; |
| } |
| if (!method.isRequestSent()) { |
| // Retry if the request has not been sent fully or |
| // if it's OK to retry methods that have been sent |
| return true; |
| } |
| // otherwise do not retry |
| return false; |
| } |
| }; |
| } |
| |
| /** |
| * @param proxy |
| * @param httpClient |
| */ |
| public static void setProxy(Proxy proxy, HttpClient httpClient) { |
| if (proxy != null && httpClient != null) { |
| if (LOGGER.isDebugEnabled()) { |
| LOGGER.debug("Setting proxy with host " + proxy.getHost() + " and port " + proxy.getPort() + " for host " + httpClient.getHostConfiguration().getHost() + ":" + httpClient.getHostConfiguration().getPort()); |
| } |
| |
| httpClient.getHostConfiguration().setProxy(proxy.getHost(), proxy.getPort()); |
| if (proxy.getUserName() != null && proxy.getPassword() != null) { |
| httpClient.getState().setProxyCredentials(AuthScope.ANY, new UsernamePasswordCredentials(proxy.getUserName(), proxy.getPassword())); |
| } |
| } |
| } |
| |
| /** |
| * @param username |
| * @param password |
| * @param httpClient |
| */ |
| public static void setCredentials(String username, String password, HttpClient httpClient) { |
| if (username != null && password != null && httpClient != null) { |
| if (LOGGER.isDebugEnabled()) { |
| LOGGER.debug("Setting credentials with username " + username + " for host " + httpClient.getHostConfiguration().getHost() + ":" + httpClient.getHostConfiguration().getPort()); |
| } |
| |
| httpClient.getParams().setAuthenticationPreemptive(true); |
| httpClient.getState().setCredentials( |
| new AuthScope(httpClient.getHostConfiguration().getHost(), httpClient.getHostConfiguration().getPort(), AuthScope.ANY_REALM), new UsernamePasswordCredentials(username, password)); |
| } |
| } |
| |
| /** |
| * @param httpClient |
| * @param httpMethod |
| * @return |
| * Returns the HTTP Status Code or -1 if an exception occurred. |
| */ |
| public static int executeMethod(HttpClient httpClient, HttpMethod httpMethod) { |
| // Execute GetMethod |
| try { |
| return httpClient.executeMethod(httpMethod); |
| } catch (IOException e) { |
| LOGGER.warn("Exception while executing HttpMethod " + httpMethod.getName() + " on URL " + httpMethod.getPath()); |
| return -1; |
| } |
| } |
| |
| /** |
| * @param responseCode |
| * @return |
| */ |
| public static boolean verifyResponseCode(int responseCode) { |
| switch (responseCode) { |
| case HttpStatus.SC_OK: |
| case HttpStatus.SC_MOVED_PERMANENTLY: |
| case HttpStatus.SC_MOVED_TEMPORARILY: |
| return true; |
| default: |
| return false; |
| |
| } |
| } |
| } |