Java tutorial
/** * * Copyright (c) 2009-2016 Freedomotic team http://freedomotic.com * * This file is part of Freedomotic * * This Program is free software; you can redistribute it and/or modify it under * the terms of the GNU General Public License as published by the Free Software * Foundation; either version 2, or (at your option) any later version. * * This Program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more * details. * * You should have received a copy of the GNU General Public License along with * Freedomotic; see the file COPYING. If not, see * <http://www.gnu.org/licenses/>. */ package com.freedomotic.plugins.devices.push; import com.freedomotic.api.EventTemplate; import com.freedomotic.api.Protocol; import com.freedomotic.events.MessageEvent; import com.freedomotic.exceptions.UnableToExecuteException; import com.freedomotic.reactions.Command; import com.freedomotic.rules.Statement; import java.io.IOException; import java.net.URISyntaxException; import java.util.HashMap; import java.util.Iterator; import java.util.Map.Entry; import java.util.logging.Level; import java.util.logging.Logger; import org.apache.commons.lang.text.StrSubstitutor; import org.apache.http.client.HttpClient; 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.client.utils.URIBuilder; import org.apache.http.impl.client.HttpClientBuilder; public class Push extends Protocol { private static final Logger LOG = Logger.getLogger(Push.class.getName()); private final HashMap<String, Integer> tupleMap = new HashMap<>(); public Push() { //every plugin needs a name and a manifest XML file super("Push", "/push/push-manifest.xml"); setPollingWait(-1); //millisecs interval between hardware device status reads } @Override protected void onShowGui() { } @Override protected void onRun() { } @Override protected void onStart() { int j = 0; for (int i = 0; i < configuration.getTuples().size(); i++) { String channel = "app.event.sensor.messages." + configuration.getTuples().getProperty(i, "category") + "." + configuration.getTuples().getProperty(i, "provider"); tupleMap.put(channel, i); if (configuration.getTuples().getBooleanProperty(i, "active", false)) { addEventListener(channel); j++; } } setDescription("Push plugin: " + j + " providers registered"); } @Override protected void onStop() { setDescription("Push plugin is stopped "); } @Override protected void onCommand(Command c) throws IOException, UnableToExecuteException { MessageEvent mess = new MessageEvent(null, c.getProperty("push.message")); mess.setType(c.getProperty("push.category") + "." + c.getProperty("push.provider")); // populate event with originating command properties for (Entry<Object, Object> entry : c.getProperties().entrySet()) { mess.getPayload().addStatement(entry.getKey().toString(), entry.getValue().toString()); } notifyEvent(mess); } @Override protected boolean canExecute(Command c) { //don't mind this method for now throw new UnsupportedOperationException("Not supported yet."); } @Override protected void onEvent(EventTemplate e) { try { MessageEvent event = (MessageEvent) e; int t = tupleMap.get(event.getDefaultDestination()); URIBuilder ub = new URIBuilder() .setScheme(configuration.getTuples().getStringProperty(t, "scheme", "http")) .setHost(configuration.getTuples().getStringProperty(t, "host", "localhost")) .setPort(configuration.getTuples().getIntProperty(t, "port", configuration.getTuples().getStringProperty(t, "scheme", "http") .equalsIgnoreCase("https") ? 443 : 80)) .setPath(configuration.getTuples().getStringProperty(t, "path", "/")); // prepare substitution tokens HashMap<String, String> valuesMap = new HashMap<>(); Iterator<Statement> it = event.getPayload().iterator(); while (it.hasNext()) { Statement s = it.next(); if (s.getOperand().equalsIgnoreCase(Statement.EQUALS)) { valuesMap.put(s.getAttribute(), s.getValue()); } } StrSubstitutor sub = new StrSubstitutor(valuesMap); // add extra parameters for (String key : configuration.getTuples().getTuple(t).keySet()) { if (key.startsWith("param.")) { String toBeReplaced = configuration.getTuples().getStringProperty(t, key, ""); // replace default string with the one provided into payload if (event.getPayload().getStatementValue(key) != null && !event.getPayload().getStatementValue(key).isEmpty()) { toBeReplaced = event.getPayload().getStatementValue(key); } // do substitutions String resolvedString = sub.replace(toBeReplaced); ub.setParameter(key.substring(6), resolvedString); } } // override default message (with variable substitution) if a new one is specified in MessageEvent.text if (event.getText() != null & !event.getText().isEmpty()) { ub.setParameter(configuration.getTuples().getStringProperty(t, "mapMessageToParam", "message"), sub.replace(event.getText())); } LOG.info(ub.build().toString()); HttpClientBuilder hcb = HttpClientBuilder.create(); HttpClient client = hcb.build(); // set http method to use HttpRequestBase request; if (configuration.getTuples().getStringProperty(t, "method", "get").equalsIgnoreCase("POST")) { request = new HttpPost(ub.build()); } else { request = new HttpGet(ub.build()); } int responseCode = client.execute(request).getStatusLine().getStatusCode(); LOG.info("Push request got code: " + responseCode); } catch (URISyntaxException | IOException ex) { LOG.log(Level.SEVERE, null, ex); } } }