/*
* Copyright 2010 Google Inc.
*
* 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 com.google.jstestdriver.server.handlers;
import com.google.gson.Gson;
import com.google.inject.Inject;
import com.google.inject.servlet.RequestParameters;
import com.google.jstestdriver.CapturedBrowsers;
import com.google.jstestdriver.SlaveBrowser;
import com.google.jstestdriver.requesthandlers.RequestHandler;
import org.mortbay.jetty.MimeTypes;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Map;
import javax.servlet.http.HttpServletResponse;
/**
* Used by the client to know if the browser is alive.
*
* @author jeremiele@google.com (Jeremie Lenfant-Engelmann)
*/
class HeartbeatGetHandler implements RequestHandler {
private static final Logger LOGGER = LoggerFactory.getLogger(
HeartbeatGetHandler.class);
private final CapturedBrowsers capturedBrowsers;
private final Map<String, String[]> parameters;
private final Gson gson;
private final HttpServletResponse response;
@Inject
public HeartbeatGetHandler(
CapturedBrowsers capturedBrowsers,
@RequestParameters Map<String, String[]> parameters,
Gson gson,
HttpServletResponse response) {
this.capturedBrowsers = capturedBrowsers;
this.parameters = parameters;
this.gson = gson;
this.response = response;
}
public void handleIt() throws IOException {
response.setContentType(MimeTypes.TEXT_PLAIN_UTF_8);
String[] ids = parameters.get("id");
final PrintWriter writer = response.getWriter();
if (ids != null && ids[0] != null) {
String id = ids[0];
SlaveBrowser browser = capturedBrowsers.getBrowser(id);
if (browser != null) {
LOGGER.debug("requesting " + browser);
if (!browser.isAlive()) {
capturedBrowsers.removeSlave(id);
writer.write("DEAD:" + gson.toJson(browser.getBrowserInfo()));
} else {
writer.write("OK");
}
} else {
LOGGER.debug("heartbeat " + id + "with no browser.");
writer.write("DEAD: can't find browser.");
}
} else {
LOGGER.debug("no heartbeat, no browser.");
writer.write("DEAD");
}
writer.flush();
}
}