mirror of
https://github.com/zyphlar/LanternPowerMonitor.git
synced 2024-03-08 14:07:47 +00:00
Initial Commit
This commit is contained in:
Mark Milligan
@@ -0,0 +1,16 @@
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package com.lanternsoftware.thermometer;
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import com.lanternsoftware.thermometer.context.ThermometerApp;
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public class TestThermo {
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public static void main(String[] args) {
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ThermometerApp app = new ThermometerApp();
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app.start();
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try {
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Thread.sleep(20000);
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} catch (InterruptedException _e) {
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_e.printStackTrace();
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}
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app.stop();
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}
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}
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@@ -0,0 +1,22 @@
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package com.lanternsoftware.thermometer.context;
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import javax.servlet.ServletContextEvent;
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import javax.servlet.ServletContextListener;
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public class Globals implements ServletContextListener {
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public static ThermometerApp app;
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@Override
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public void contextInitialized(ServletContextEvent sce) {
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app = new ThermometerApp();
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app.start();
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}
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@Override
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public void contextDestroyed(ServletContextEvent sce) {
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if (app != null) {
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app.stop();
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app = null;
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}
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}
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}
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@@ -0,0 +1,131 @@
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package com.lanternsoftware.thermometer.context;
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import com.lanternsoftware.util.NullUtils;
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import com.lanternsoftware.util.concurrency.ConcurrencyUtils;
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import org.hid4java.HidDevice;
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import org.hid4java.HidManager;
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import org.hid4java.HidServices;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.util.Timer;
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import java.util.TimerTask;
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public class ThermometerApp {
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private static final Logger LOG = LoggerFactory.getLogger(ThermometerApp.class);
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private HidDevice device;
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private final Timer timer = new Timer();
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private double lastTemp;
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public void start() {
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HidServices hs = HidManager.getHidServices();
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for (HidDevice d : hs.getAttachedHidDevices()) {
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if (NullUtils.isEqual(d.getVendorId(), (short) 0x413d) && NullUtils.isEqual(d.getProductId(), (short) 0x2107)) {
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if (d.getInterfaceNumber() == 1)
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device = d;
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}
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}
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if ((device != null) && device.open()) {
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synchronized (device) {
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read(hexToByte("0182770100000000"));
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read(hexToByte("0186ff0100000000"));
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read(hexToByte("0182770100000000"));
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read(hexToByte("0182770100000000"));
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}
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} else {
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LOG.error("Failed to open HID Device");
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return;
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}
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timer.scheduleAtFixedRate(new TimerTask() {
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@Override
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public void run() {
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lastTemp = readTemperature();
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}
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}, 0L, 10000L);
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}
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public void stop() {
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timer.cancel();
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ConcurrencyUtils.sleep(10000);
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if (device != null) {
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device.close();
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device = null;
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}
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HidServices hs = HidManager.getHidServices();
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hs.stop();
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hs.shutdown();
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}
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private byte[] read(byte[] _request) {
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int RETRIES = 8;
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int stat = -1;
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int attempts = 0;
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while ((stat <= 0) && (attempts < RETRIES)) {
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attempts++;
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try {
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stat = device.write(_request, _request.length*8, (byte) 0);
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}
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catch (Exception _e) {
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LOG.error("Exception while writing", _e);
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}
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if (stat <= 0) {
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if (attempts == RETRIES) {
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LOG.error("Failed max number of retires, returning null");
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return null;
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}
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LOG.error("Write attempt " + attempts + " failed, waiting 250ms to retry");
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ConcurrencyUtils.sleep(250);
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}
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}
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byte[] response = new byte[32];
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stat = -1;
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attempts = 0;
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while ((stat <= 0) && (attempts < RETRIES)) {
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attempts++;
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try {
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stat = device.read(response, 500);
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}
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catch (Exception _e) {
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LOG.error("Exception while reading", _e);
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}
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if (stat <= 0) {
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if (attempts == RETRIES) {
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LOG.error("Failed max number of retires, returning null");
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return null;
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}
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LOG.error("Read attempt " + attempts + " failed, waiting 250ms to retry");
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ConcurrencyUtils.sleep(250);
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}
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}
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return response;
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}
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public double getTemperature() {
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return lastTemp;
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}
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public double readTemperature() {
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if (device != null) {
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synchronized (device) {
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byte[] response = read(hexToByte("0180330100000000"));
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if (response == null)
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return 5.0;
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int rawReading = ((response[3] & 0xFF) + (response[2] << 8));
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if (rawReading == 0)
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return 5.0;
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return rawReading / 100.0;
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}
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}
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return 5.0;
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}
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private static byte[] hexToByte(String s) {
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int len = s.length();
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byte[] data = new byte[len / 2];
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for (int i = 0; i < len; i += 2) {
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data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4) + Character.digit(s.charAt(i + 1), 16));
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}
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return data;
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}
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}
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@@ -0,0 +1,18 @@
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package com.lanternsoftware.thermometer.servlet;
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import com.lanternsoftware.thermometer.context.Globals;
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import javax.servlet.ServletException;
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import javax.servlet.annotation.WebServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import java.io.IOException;
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@WebServlet("/temp")
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public class TempServlet extends ThermoServlet {
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@Override
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protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
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setResponseEntity(resp, "application/json", "{\"temp\": "+ Globals.app.getTemperature() + "}");
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}
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}
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@@ -0,0 +1,45 @@
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package com.lanternsoftware.thermometer.servlet;
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import com.lanternsoftware.util.NullUtils;
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import org.apache.commons.io.IOUtils;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletResponse;
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import java.io.OutputStream;
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public abstract class ThermoServlet extends HttpServlet {
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public static void setResponseHtml(HttpServletResponse _response, String _sHtml) {
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setResponseEntity(_response, "text/html", _sHtml);
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}
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public static void setResponseEntity(HttpServletResponse _response, String _sContentType, String _sEntity) {
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setResponseEntity(_response, 200, _sContentType, _sEntity);
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}
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public static void setResponseEntity(HttpServletResponse _response, String _sContentType, byte[] _btData) {
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setResponseEntity(_response, 200, _sContentType, _btData);
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}
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public static void setResponseEntity(HttpServletResponse _response, int _iStatus, String _sContentType, String _sEntity) {
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setResponseEntity(_response, _iStatus, _sContentType, NullUtils.toByteArray(_sEntity));
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}
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public static void setResponseEntity(HttpServletResponse _response, int _iStatus, String _sContentType, byte[] _btData) {
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OutputStream os = null;
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try {
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_response.setStatus(_iStatus);
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_response.setCharacterEncoding("UTF-8");
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_response.setContentType(_sContentType);
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if ((_btData != null) && (_btData.length > 0)) {
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_response.setContentLength(_btData.length);
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os = _response.getOutputStream();
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os.write(_btData);
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} else
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_response.setContentLength(0);
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} catch (Exception e) {
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e.printStackTrace();
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} finally {
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IOUtils.closeQuietly(os);
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}
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}
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}
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@@ -0,0 +1,28 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<configuration>
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<property name="log.pattern" value="%date %-5level %logger{0} - %message%n"/>
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<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
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<encoder>
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<pattern>${log.pattern}</pattern>
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</encoder>
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</appender>
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<appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
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<file>/opt/currentmonitor/log/log.txt</file>
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<rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
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<fileNamePattern>/opt/currentmonitor/log/log.%d{yyyy-MM-dd}.%i.txt</fileNamePattern>
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<maxFileSize>20MB</maxFileSize>
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<maxHistory>20</maxHistory>
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</rollingPolicy>
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<encoder>
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<pattern>${log.pattern}</pattern>
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</encoder>
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</appender>
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<logger name="com.lanternsoftware" level="INFO"/>
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<root level="OFF">
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<appender-ref ref="FILE"/>
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</root>
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</configuration>
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@@ -0,0 +1,9 @@
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<!DOCTYPE web-app PUBLIC
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"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
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"http://java.sun.com/dtd/web-app_2_3.dtd" >
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<web-app>
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<listener>
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<listener-class>com.lanternsoftware.thermometer.context.Globals</listener-class>
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</listener>
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</web-app>
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@@ -0,0 +1,16 @@
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package com.lanternsoftware.thermometer;
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import com.lanternsoftware.thermometer.context.ThermometerApp;
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public class TestStartup {
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public static void main(String[] args) {
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ThermometerApp app = new ThermometerApp();
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app.start();
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try {
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Thread.sleep(20000);
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} catch (InterruptedException _e) {
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_e.printStackTrace();
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}
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app.stop();
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}
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}
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