Java tutorial
/** * Copyright (c) 2010-2015, openHAB.org and others. * * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html */ package org.openhab.binding.hdanywhere.internal; import static org.apache.commons.lang.StringUtils.isNotBlank; import static org.quartz.JobBuilder.newJob; import static org.quartz.SimpleScheduleBuilder.simpleSchedule; import static org.quartz.TriggerBuilder.newTrigger; import static org.quartz.impl.matchers.GroupMatcher.jobGroupEquals; import java.util.ArrayList; import java.util.Collection; import java.util.Dictionary; import java.util.Enumeration; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.regex.Matcher; import java.util.regex.Pattern; import org.openhab.binding.hdanywhere.HDanywhereBindingProvider; import org.openhab.core.binding.AbstractActiveBinding; import org.openhab.core.library.types.DecimalType; import org.openhab.core.types.Command; import org.openhab.core.types.State; import org.openhab.core.types.TypeParser; import org.openhab.io.net.http.HttpUtil; import org.osgi.service.cm.ConfigurationException; import org.osgi.service.cm.ManagedService; import org.quartz.Job; import org.quartz.JobDataMap; import org.quartz.JobDetail; import org.quartz.JobExecutionContext; import org.quartz.JobExecutionException; import org.quartz.JobKey; import org.quartz.Scheduler; import org.quartz.SchedulerException; import org.quartz.Trigger; import org.quartz.impl.StdSchedulerFactory; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * Main binding class for the HDanywhere HDMI Matrix. (www.hdanywhere.com) * This binding does not use the UDP control or RS232 control channels provided by HDanywhere but * instead uses the output from the built-in webserver to steer the matrix. The main advantage is * that actual input/output port mappings can be polled, which is not provided by the "standard" * integration interfaces. * * The binding is developed for matrixes with firmware version V1.2(20131222) * * @author Karel Goderis * @since 1.4.0 */ public class HDanywhereBinding extends AbstractActiveBinding<HDanywhereBindingProvider> implements ManagedService { private static final Logger logger = LoggerFactory.getLogger(HDanywhereBinding.class); /** the refresh interval which is used to check for changes in the binding configurations */ private static long refreshInterval = 5000; /** the timeout to use for connecting to a given host (defaults to 5000 milliseconds) */ private static int timeout = 5000; private static final Pattern EXTRACT_HDANYWHERE_CONFIG_PATTERN = Pattern .compile("(.*)\\.(.*)\\.(.*)\\.(.*)\\.(ports)$"); /** structure to track configured matrices */ private HashMap<String, Integer> portMappingCache = new HashMap<String, Integer>(); /** structure to store actual input/output states */ private HashMap<String, Integer> matrixCache = new HashMap<String, Integer>(); @SuppressWarnings("rawtypes") @Override public void updated(Dictionary config) throws ConfigurationException { if (config != null) { Enumeration keys = config.keys(); while (keys.hasMoreElements()) { String key = (String) keys.nextElement(); Matcher matcher = EXTRACT_HDANYWHERE_CONFIG_PATTERN.matcher(key); if (!matcher.matches()) { logger.debug("given hdanywhere-config-key '" + key + "' does not follow the expected pattern '<host_IP_Address>.ports'"); continue; } matcher.reset(); matcher.find(); String hostIP = matcher.group(1) + "." + matcher.group(2) + "." + matcher.group(3) + "." + matcher.group(4); String configKey = matcher.group(5); String value = (String) config.get(key); if ("ports".equals(configKey)) { matrixCache.put(hostIP, Integer.valueOf(value)); } else { throw new ConfigurationException(configKey, "the given configKey '" + configKey + "' is unknown"); } } } setProperlyConfigured(true); } public void activate() { // Nothing to do here. We start the binding when the first item bindigconfig is processed } public void deactivate() { //unschedule all the quartz jobs Scheduler sched = null; try { sched = StdSchedulerFactory.getDefaultScheduler(); } catch (SchedulerException e) { logger.error("An exception occurred while getting a reference to the Quarz Scheduler"); } for (HDanywhereBindingProvider provider : providers) { try { for (JobKey jobKey : sched.getJobKeys(jobGroupEquals("HDanywhere-" + provider.toString()))) { sched.deleteJob(jobKey); } } catch (SchedulerException e) { logger.error("An exception occurred while deleting the HDanywhere Quartz jobs ({})", e.getMessage()); } } } @Override protected void internalReceiveCommand(String itemName, Command command) { HDanywhereBindingProvider provider = findFirstMatchingBindingProvider(itemName); if (provider == null) { logger.trace("doesn't find matching binding provider [itemName={}, command={}]", itemName, command); return; } List<String> hosts = provider.getHosts(itemName); int sourcePort = Integer.valueOf(command.toString()); for (String aHost : hosts) { Integer numberOfPorts = matrixCache.get(aHost); if (numberOfPorts == null) { // we default to the smallest matrix currently sold by HDanywhere numberOfPorts = 4; } if (sourcePort > numberOfPorts) { // nice try - we can switch to a port that does not physically exist logger.warn("{} goes beyond the physical number of {} ports available on the matrix {}", new Object[] { sourcePort, numberOfPorts, aHost }); } else { List<Integer> ports = provider.getPorts(aHost, itemName); String httpMethod = "GET"; String url = "http://" + aHost + "/switch.cgi?command=3&data0="; for (Integer aPort : ports) { url = url + aPort.toString() + "&data1="; url = url + command.toString() + "&checksum="; int checksum = 3 + aPort + sourcePort; url = url + String.valueOf(checksum); if (isNotBlank(httpMethod) && isNotBlank(url)) { String response = HttpUtil.executeUrl(httpMethod, url, null, null, null, timeout); Pattern p = Pattern.compile("The output " + aPort + " select input (.*)."); Matcher m = p.matcher(response); while (m.find()) { List<Class<? extends State>> stateTypeList = new ArrayList<Class<? extends State>>(); stateTypeList.add(DecimalType.class); State state = TypeParser.parseState(stateTypeList, m.group(1)); if (!portMappingCache.containsKey(aHost + ":" + aPort)) { portMappingCache.put(aHost + ":" + aPort, Integer.valueOf(m.group(1))); eventPublisher.postUpdate(itemName, (State) state); } else { int cachedValue = portMappingCache.get(aHost + ":" + aPort); if (cachedValue != Integer.valueOf(m.group(1))) { portMappingCache.put(aHost + ":" + aPort, Integer.valueOf(m.group(1))); eventPublisher.postUpdate(itemName, (State) state); } } } } } } } } /** * Find the first matching {@link HDanywhereBindingProvider} * according to <code>itemName</code> * * @param itemName * * @return the matching binding provider or <code>null</code> if no binding * provider could be found */ protected HDanywhereBindingProvider findFirstMatchingBindingProvider(String itemName) { HDanywhereBindingProvider firstMatchingProvider = null; for (HDanywhereBindingProvider provider : providers) { List<String> hosts = provider.getHosts(itemName); if (hosts != null && hosts.size() > 0) { firstMatchingProvider = provider; break; } } return firstMatchingProvider; } @Override protected void execute() { if (isProperlyConfigured()) { Scheduler sched = null; try { sched = StdSchedulerFactory.getDefaultScheduler(); } catch (SchedulerException e) { logger.error("An exception occurred while getting a reference to the Quartz Scheduler"); } for (HDanywhereBindingProvider provider : providers) { HashMap<String, Integer> compiledList = ((HDanywhereBindingProvider) provider).getIntervalList(); if (compiledList != null) { Iterator<String> pbcIterator = compiledList.keySet().iterator(); while (pbcIterator.hasNext()) { String aHost = pbcIterator.next(); boolean jobExists = false; // enumerate each job group try { for (String group : sched.getJobGroupNames()) { // enumerate each job in group for (JobKey jobKey : sched.getJobKeys(jobGroupEquals(group))) { if (jobKey.getName().equals(aHost)) { jobExists = true; break; } } } } catch (SchedulerException e1) { logger.error("An exception occurred while quering the Quartz Scheduler ({})", e1.getMessage()); } if (!jobExists) { // set up the Quartz jobs JobDataMap map = new JobDataMap(); map.put("host", aHost); map.put("binding", this); JobDetail job = newJob(HDanywhereBinding.PollJob.class) .withIdentity(aHost, "HDanywhere-" + provider.toString()).usingJobData(map) .build(); Trigger trigger = newTrigger().withIdentity(aHost, "HDanywhere-" + provider.toString()) .startNow().withSchedule(simpleSchedule().repeatForever() .withIntervalInSeconds(compiledList.get(aHost))) .build(); try { sched.scheduleJob(job, trigger); } catch (SchedulerException e) { logger.error("An exception occurred while scheduling a Quartz Job"); } } } } } } } @Override protected long getRefreshInterval() { return refreshInterval; } @Override protected String getName() { return "HDanywhere Refresh Service"; } /** * Quartz Job that does poll the HDanwywhere matrix and parses the html string returned * by the built-in webserver * */ public static class PollJob implements Job { @Override public void execute(JobExecutionContext context) throws JobExecutionException { // get the reference to the Stick JobDataMap dataMap = context.getJobDetail().getJobDataMap(); String host = (String) dataMap.get("host"); HDanywhereBinding theBinding = (HDanywhereBinding) dataMap.get("binding"); String httpMethod = "GET"; String url = "http://" + host + "/status_show.shtml"; if (isNotBlank(httpMethod) && isNotBlank(url)) { String response = HttpUtil.executeUrl(httpMethod, url, null, null, null, timeout); Integer numberOfPorts = theBinding.matrixCache.get(host); if (numberOfPorts == null) { // we default to the smallest matrix currently sold by HDanywhere numberOfPorts = 4; } if (response != null) { for (int i = 1; i <= numberOfPorts; i++) { Pattern p = Pattern.compile("var out" + i + "var = (.*);"); Matcher m = p.matcher(response); while (m.find()) { List<Class<? extends State>> stateTypeList = new ArrayList<Class<? extends State>>(); stateTypeList.add(DecimalType.class); State state = TypeParser.parseState(stateTypeList, m.group(1)); for (HDanywhereBindingProvider provider : theBinding.providers) { Collection<String> theItems = provider.getItemNames(); for (String anItem : theItems) { List<Integer> itemPorts = provider.getPorts(host, anItem); for (Integer aPort : itemPorts) { if (aPort == i) { if (!theBinding.portMappingCache.containsKey(host + ":" + aPort)) { theBinding.portMappingCache.put(host + ":" + aPort, Integer.valueOf(m.group(1))); theBinding.eventPublisher.postUpdate(anItem, (State) state); } else { int cachedValue = theBinding.portMappingCache .get(host + ":" + aPort); if (cachedValue != Integer.valueOf(m.group(1))) { theBinding.portMappingCache.put(host + ":" + aPort, Integer.valueOf(m.group(1))); theBinding.eventPublisher.postUpdate(anItem, (State) state); } } } } } } } } } } } } }