| /** |
| * 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 org.apache.ambari.metrics.core.loadsimulator.net; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.InputStreamReader; |
| import java.io.OutputStreamWriter; |
| import java.net.HttpURLConnection; |
| import java.net.URL; |
| |
| public class UrlService { |
| |
| public static final int CONNECT_TIMEOUT = 20000; |
| public static final int READ_TIMEOUT = 20000; |
| private final String address; |
| private HttpURLConnection conn; |
| |
| private UrlService(String address) { |
| this.address = address; |
| } |
| |
| /** |
| * Returns a new UrlService connected to specified address. |
| * |
| * @param address |
| * @return |
| * @throws IOException |
| */ |
| public static UrlService newConnection(String address) throws IOException { |
| UrlService svc = new UrlService(address); |
| svc.connect(); |
| |
| return svc; |
| } |
| |
| public HttpURLConnection connect() throws IOException { |
| URL url = new URL(address); |
| conn = (HttpURLConnection) url.openConnection(); |
| |
| //TODO: make timeouts configurable |
| conn.setConnectTimeout(CONNECT_TIMEOUT); |
| conn.setReadTimeout(READ_TIMEOUT); |
| conn.setDoInput(true); |
| conn.setDoOutput(true); |
| conn.setRequestMethod("POST"); |
| conn.setRequestProperty("Content-Type", "application/json"); |
| conn.setRequestProperty("Accept", "*/*"); |
| |
| return conn; |
| } |
| |
| public String send(String payload) throws IOException { |
| if (conn == null) |
| throw new IllegalStateException("Cannot use unconnected UrlService"); |
| write(payload); |
| |
| return read(); |
| } |
| |
| private String read() throws IOException { |
| StringBuilder response = new StringBuilder(); |
| |
| BufferedReader br = new BufferedReader(new InputStreamReader( |
| conn.getInputStream())); |
| String line = null; |
| while ((line = br.readLine()) != null) { |
| response.append(line); |
| } |
| br.close(); |
| |
| return response.toString(); |
| } |
| |
| private void write(String payload) throws IOException { |
| OutputStreamWriter writer = new OutputStreamWriter(conn.getOutputStream(), |
| "UTF-8"); |
| writer.write(payload); |
| writer.close(); |
| } |
| |
| public void disconnect() { |
| conn.disconnect(); |
| } |
| } |