Java tutorial
/* * Copyright 2012-2014 eBay Software Foundation and selendroid committers. * * Licensed 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 io.selendroid.standalone.server.util; import io.netty.handler.codec.http.HttpMethod; import java.util.concurrent.TimeUnit; import java.util.logging.Logger; import io.selendroid.server.common.exceptions.SelendroidException; import org.apache.commons.io.IOUtils; import org.apache.http.HttpHost; import org.apache.http.HttpResponse; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpDelete; import org.apache.http.client.methods.HttpGet; import org.apache.http.client.methods.HttpPost; import org.apache.http.client.methods.HttpRequestBase; import org.apache.http.entity.StringEntity; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.message.BasicHttpEntityEnclosingRequest; import org.json.JSONException; import org.json.JSONObject; public class HttpClientUtil { private static final Logger log = Logger.getLogger(HttpClientUtil.class.getName()); public static HttpClient getHttpClient() { return new DefaultHttpClient(); } public static HttpResponse executeRequestWithPayload(String uri, int port, HttpMethod method, String payload) throws Exception { BasicHttpEntityEnclosingRequest request = new BasicHttpEntityEnclosingRequest(method.name(), uri); request.setEntity(new StringEntity(payload, "UTF-8")); return getHttpClient().execute(new HttpHost("localhost", port), request); } public static JSONObject parseJsonResponse(HttpResponse response) throws Exception { String r = IOUtils.toString(response.getEntity().getContent(), "UTF-8"); try { return new JSONObject(r); } catch (JSONException e) { log.severe("Failed to parse json response: " + r); throw e; } } public static HttpResponse executeRequest(String url, HttpMethod method) throws Exception { HttpRequestBase request; if (HttpMethod.GET.equals(method)) { request = new HttpGet(url); } else if (HttpMethod.POST.equals(method)) { request = new HttpPost(url); } else if (HttpMethod.DELETE.equals(method)) { request = new HttpDelete(url); } else { throw new RuntimeException("Provided HttpMethod not supported: " + method); } return getHttpClient().execute(request); } public static boolean isServerStarted(int port) { HttpResponse response; try { response = executeRequest("http://localhost:" + port + "/wd/hub/sessions", HttpMethod.GET); } catch (Exception e) { return false; } try { JSONObject result = parseJsonResponse(response); return result.getInt("status") == 0; } catch (Exception e) { return false; } } public static void waitForServer(int port, long timeout, TimeUnit timeoutUnit) { long end = System.currentTimeMillis() + timeoutUnit.toMillis(timeout); while (!isServerStarted(port)) { if (System.currentTimeMillis() > end) { throw new SelendroidException(String .format("Selendroid standalone server failed to start within %d %s", timeout, timeoutUnit)); } try { Thread.sleep(500); } catch (InterruptedException e) { Thread.currentThread().interrupt(); } } } }