Klagarge/MinecraftElectricalAge
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github-classroom[bot]
2023-05-02 11:57:51 +00:00
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src/main/java/ch/hevs/isi/MinecraftController.java Normal file
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package ch.hevs.isi;
import ch.hevs.isi.utils.Utility;
public class MinecraftController {
public static boolean ERASE_PREVIOUS_DATA_INB_DB = false;
public static void usage() {
System.out.println();
System.out.println("You're reading this message because no parameter (or not the needed ones) has been passed to the application.");
System.out.println();
System.out.println("In development mode, just add to your running configuration the needed parameters (see usage below).");
System.out.println("In running mode, the application's usage is the following:");
System.out.println("java MinecraftController <InfluxDB Server> <DB Name> <DB Measurement> <DB Username> <ModbusTCP Server> <ModbusTCP port> [-modbus4j] [-keepAlive]");
System.out.println("where:");
System.out.println("- <InfluxDB Server>: The complete URL of the InfluxDB server, including the protocol (http or https)...");
System.out.println(" Example: https://influx.sdi.hevs.ch");
System.out.println("- <DB Name>: The name of the Influx DB to use. For this project, this name is the name of the group you've been affected to. (SInXX)");
System.out.println("- <DB Username: The user's name to use to access the DB. It's also your group's name. (SInXX)");
System.out.println("- <ModbusTCP Server>: The IP address of the Minecraft ModbusTCP server (default value: localhost)");
System.out.println("- <ModbusTCP port>: The port number of the Minecraft ModbusTCP server (default value: 1502)");
System.out.println("- [-eraseDB]: Optional parameter! If set, the application will erase the previous data in InfluxDB...");
System.out.println();
System.exit(1);
}
@SuppressWarnings("all")
public static void main(String[] args) {
// ------------------------------------- DO NOT CHANGE THE FOLLOWING LINES -------------------------------------
String dbProtocol = "http";
String dbHostName = "localhost";
String dbName = "labo";
String dbUserName = "root";
String dbPassword = "root";
String modbusTcpHost = "localhost";
int modbusTcpPort = 1502;
// Check the number of arguments and show usage message if the number does not match.
String[] parameters = null;
// If there is only one number given as parameter, construct the parameters according the group number.
if (args.length >= 5) {
parameters = args;
// Decode parameters for influxDB
String[] dbParams = parameters[0].split("://");
if (dbParams.length != 2) {
usage();
}
dbProtocol = dbParams[0];
dbHostName = dbParams[1];
dbName = parameters[1];
dbUserName = parameters[2];
dbPassword = Utility.md5sum(dbUserName);
// Decode parameters for Modbus TCP
modbusTcpHost = parameters[3];
modbusTcpPort = Integer.parseInt(parameters[4]);
for (int i = 5; i < args.length; i++) {
if (parameters[i].compareToIgnoreCase("-erasedb") == 0) {
ERASE_PREVIOUS_DATA_INB_DB = true;
}
}
} else {
usage();
}
// ------------------------------------ /DO NOT CHANGE THE FOLLOWING LINES -------------------------------------
// Start coding here ...
}
}

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src/main/java/ch/hevs/isi/core/package-info.java Normal file
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package ch.hevs.isi.core;

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src/main/java/ch/hevs/isi/db/TimeManager.java Normal file
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package ch.hevs.isi.db;
import java.time.*;
import java.time.format.DateTimeFormatter;
/**
* TimeManager Class
*
* This class allows to calculate a timestamp taking into account the time index of Minecraft Electrical Age and its
* time acceleration. (1 day = 10 minutes)
* You also have to indicate a number of days to subtract from the current time which will determine the time t0 which
* defines the starting time of the simulation.
*/
public class TimeManager {
// Start time
private final LocalDateTime t0;
// days since beginning of game
private long days;
// previous value of "CLOCK_FLOAT" coming from Minecraft EA
private float lastEaClock;
// timestamp for InfluxDB
private long nanosForDB;
/* ************************************************************************************************************ */
/* Constructors */
/* ************************************************************************************************************ */
/**
* Constructor of TimeManager class, where the start time of the game is calculated from today at midnight minus
* the given number of days. Today at midnight, from local time.
*
* @param minusDays The number of days to subtract to the current day.
*/
public TimeManager(int minusDays) {
t0 = LocalDateTime.of(LocalDate.now(), LocalTime.MIDNIGHT).minusDays(minusDays);
days = 0;
lastEaClock = 0f;
nanosForDB = 0;
}
/* ************************************************************************************************************ */
/* Public methods */
/* ************************************************************************************************************ */
/**
* This method takes the index of the Electrical-Age clock and generates the corresponding timestamp.
*
* @param strEaClock The EA clock given as a {@code String}
*/
public void setTimestamp(String strEaClock) {
setTimestamp(Float.parseFloat(strEaClock));
}
/**
* This method takes the index of the Electrical-Age clock and generates the corresponding timestamp.
*
* @param eaClock The EA clock given as a {@code float}
*/
public void setTimestamp(float eaClock) {
// eaClock: value read in data point with label "CLOCK_FLOAT", if it's less then the previous one, it means
// that a day has passed !
if (eaClock < lastEaClock)
days++;
// Storing the EA Clock and computing the corresponding nanoseconds...
lastEaClock = eaClock;
long nanoOfDay = Math.round(eaClock * (24 * 3600E9));
// Creates a timestamp from t0 and adding to it the passed days and the nanoseconds of the current days
LocalDateTime tInsert = t0.plusDays(days);
tInsert = tInsert.plus(Duration.ofNanos(nanoOfDay));
System.out.println("tInsert in method: " + tInsert.format(DateTimeFormatter.ISO_DATE_TIME));
// Getting the related timestamp in nanoseconds according to the local time zone
ZoneId zoneId = ZoneId.systemDefault();
nanosForDB = tInsert.atZone(zoneId).toEpochSecond() * 1000000000;
}
/**
* Gives the actual timestamp according to the EA clock.
*
* @return The timestamp in nanoseconds
*/
public long getNanosForDB() {
return nanosForDB; // nanos for writing in DB
}
/**
* Returns {@code true}
* @return
*/
public boolean isLastDay() {
return (days % 3) == 2;
}
/* ************************************************************************************************************ */
/* */
/* Public Main */
/* */
/* ************************************************************************************************************ */
public static void main(String[] args) {
TimeManager tm = new TimeManager(3);
System.out.println("t0: " + tm.t0.toString());
tm.setTimestamp(0.5f);
System.out.println("nanosForDBs: " + tm.getNanosForDB());
tm.setTimestamp("0.1");
System.out.println("nanosForDBs: " + tm.getNanosForDB());
}
}

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src/main/java/ch/hevs/isi/db/package-info.java Normal file
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package ch.hevs.isi.db;

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src/main/java/ch/hevs/isi/field/package-info.java Normal file
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package ch.hevs.isi.field;

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src/main/java/ch/hevs/isi/utils/Utility.java Normal file
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package ch.hevs.isi.utils;
import java.io.*;
import java.math.BigInteger;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.*;
/**
* This class contains some useful Java methods to manipulate Modbus data.
*
* @author Michael Clausen
* @author Cedric Crettaz
*/
@SuppressWarnings("unused")
public class Utility {
/** Default size for the TCP input stream */
public static final int TCP_BUFFER_SIZE = 4096;
/** Object to get some random values... */
public static Random rnd = new Random(1);
/**
* Calculates and returns the CRC using the data passed in parameters.
*
* @param data a byte array containing the data to send
* @param offset the offset
* @param len the data length
* @return byte[] the CRC
*/
public static byte[] calculateCRC(byte[] data , int offset , int len)
{
int crc = 0x0000FFFF;
for (int i = 0 ; i < len ; i++)
{
crc = crc ^ Utility.unsignedByteToSignedInt(data[i + offset]);
for (int j = 0 ; j < 8 ; j++)
{
int tmp = crc;
int carryFlag = tmp & 0x0001;
crc = crc >> 1;
if (carryFlag == 1)
{
crc = crc ^ 0xA001;
}
}
}
byte[] result = new byte[2];
result[0] = (byte)(crc & 0xFF);
result[1] = (byte)((crc & 0xFF00) >> 8);
return result;
}
/**
* Checks the CRC and returns true if it is correct, otherwise false.
*
* @param data a byte array containing the data to send
* @param offset the offset
* @param len the data length
* @param crc a byte array containing the CRC to check
* @return boolean true if the CRC is correct, otherwise false
*/
public static boolean checkCRC(byte[] data , int offset , int len , byte[] crc)
{
byte[] calcCrc = Utility.calculateCRC(data , offset , len);
return (calcCrc[0] == crc[0] && calcCrc[1] == crc[1]);
}
/**
* Returns a <code>float</code> value from array of bytes. This byte's array can only be 2 or 4 bytes long.
* @param bytes The array of bytes to convert.
* @param offset The position where the method has to start to get the bytes from.
* @param size The amount of bytes to convert.
* @return A <code>Float</code> value or <code>null</code> if the process failed.
*/
public static Float bytesToFloat(byte[] bytes, int offset, int size) {
if (size == 2 || size == 4) {
byte[] tmp = new byte[4];
System.arraycopy(bytes, offset, tmp, 0, size);
try {
return ByteBuffer.wrap(tmp).order(ByteOrder.BIG_ENDIAN).getFloat();
} catch (Exception e) {
DEBUG("utils", "Utility", "bytesToFloat()", "ByteBufferException : " + e.getMessage());
}
} else {
DEBUG("utils", "Utility", "bytesToFloat()", "ERROR: size MUST be 2 or 4 !!!");
}
return null;
}
/**
* Converts an unsigned byte to a signed integer.
*
* @param from an unsigned byte to convert to a signed integer
* @return int a signed integer
*/
public static int unsignedByteToSignedInt(byte from)
{
return 0x000000FF & (int)from;
}
/**
* Utility method to convert a byte array in a string made up of hex (0,.. 9, a,..f)
* @param b The array of bytes to be convert in HEX characters.
* @return A string representing the given array of byte in HEX values.
*/
public static String getHexString(byte[] b) {
return getHexString(b, 0, b.length);
}
/**
* Utility method to convert a byte array in a string made up of hex (0,.. 9, a,..f)
* @param b The byte array to convert in HEX string
* @param offset The index where we start to convert from.
* @param length The amount of bytes to convert in HEX string
* @return A String representing the HEX values of the selected bytes of the array.
*/
public static String getHexString(byte[] b, int offset, int length) {
StringBuilder result = new StringBuilder();
for (int i = offset; i < offset+length; i++) {
result.append(Integer.toString((b[i] & 0xff) + 0x100, 16).substring(1));
}
return result.toString();
}
/**
* Utility method to convert a byte array in a string made up of hex (0,.. 9, a,..f) and
* format the string with `0xCC` where CC is the string in HEX
* @param b The byte array to convert in HEX string
* @param offset The index where we start to convert from.
* @param length The amount of bytes to convert in HEX string
* @return A String representing the HEX values of the selected bytes of the array.
*/
public static String getHexStringForDebug(byte[] b, int offset, int length) {
StringBuilder result = new StringBuilder();
for (int i = offset; i < offset+length; i++) {
result.append("0x");
result.append(Integer.toString((b[i] & 0xff) + 0x100, 16).substring(1));
result.append(" ");
}
return result.toString().trim();
}
/**
* To be used to make a thread waiting for a certain amount of time
* @param thread The thread to be stopped
* @param millis The amount of time in [ms] to stop the thread.
*/
public static void threadWait(Thread thread, long millis) {
try {
thread.wait(millis);
} catch(InterruptedException ie) {
DEBUG("utils", "Utility", "threadWait()", "InterruptedException : " + ie.getMessage());
} catch (NullPointerException npe) {
DEBUG("utils", "Utility", "threadWait()", "The given Thread is NULL !");
}
}
/**
* To wait some times ...
*/
public static void waitSomeTime(int ms) {
try {
Thread.sleep(ms);
} catch (InterruptedException e) {
DEBUG("utils", "Utility", "waitSomeTime()", "InterruptedException : " + e.getMessage());
}
}
/**
* Returns the md5 of any input...
* @param msg The input string to process
* @return The md5 of the input string.
*/
public static String md5sum(String msg)
{
try {
MessageDigest md = MessageDigest.getInstance("md5");
return String.format("%032x", new BigInteger(1, md.digest(msg.getBytes(StandardCharsets.UTF_8))));
} catch (NoSuchAlgorithmException e) {
DEBUG("utils", "Utility", "md5sum()", "NoSuchAlgorithmException : " + e.getMessage());
}
return null;
}
/**
* Retrieves a random value rounded to 2 decimal...
*
* @param factor A coefficient which the random value is multiplied with.
* @return A random value rounded to 2 decimal converted to a String.
*/
public static String getStringRndVal(int factor) {
float val = (float) rnd.nextDouble()*factor*10;
return String.format("%.2f", val).replace(",", ".");
}
/**
* Reads the incoming data from an input stream as long as there is
* something to read and saved the data in an array of bytes.
*
* The method is blocking !
* This method blocks until input data is available, end of file is detected,
* or an exception is thrown.
*
* If the length of of read data is zero, then no bytes are read and an empty
* array of bytes is returned; otherwise, there is an attempt to read at least
* one byte. If no byte is available because the stream is at the end of the
* file, the value -1 is returned; otherwise, at least one byte is read and
* returned as an array of bytes.
*
* @param in The input Stream where to read the data coming from.
* @return The read data as an <code>array of bytes</code>. Or null if the
* has been closed by the peer while waiting for incoming data.
* @throws IOException If the first byte cannot be read for any reason other
* than the end of the file, if the input stream has been
* closed, or if some other I/O error occurs.
*/
public static byte[] readBytes(InputStream in) throws IOException
{
byte[] buffer = new byte[TCP_BUFFER_SIZE];
// Read the incoming data
int b = in.read(buffer);
// Creates an array of bytes with the right size
if (b == -1) return null; // the connection has been canceled by the peer
else if (b == 0) return new byte[0]; // empty data
else { // The received data
byte[] rBytes = new byte[b];
System.arraycopy(buffer, 0, rBytes, 0, b);
return rBytes;
}
}
/**
* Reads from the given input stream an amount of bytes and retrieves these data as
* an array of bytes. This method is
*
* The method is blocking !
*
* @param in The input Stream where to read the data coming from.
* @param len The number of bytes to be read from the input stream.
*
* @return The read data as an <code>array of bytes</code>.
*
* @throws IOException If the first byte cannot be read for any reason other
* than the end of the file, if the input stream has been
* closed, or if some other I/O error occurs.
*/
public static byte[] readNBytes(InputStream in, int len) throws IOException
{
byte[] buffer = new byte[len];
// Checks that there is enough available data to read from the input stream
int counter = 0;
while (in.available() < len) {
Utility.waitSomeTime(2);
if (++counter > 10)
return null;
}
// Read the incoming data
int b = in.read(buffer, 0, len);
// Creates an array of bytes with the right size
if (b == -1) return null; // the connection has been canceled by the peer
else if (b == 0) return new byte[0]; // empty data
else return buffer; // The received data
}
/**
* Reads lines of text from the given input stream. A line is considered to be terminated by any one of a
* line feed ('\n'), a carriage return ('\r'), or a carriage return followed immediately by a line feed.
*
* @param in The Input Stream to read from.
* @return A list of String, without any line-termination characters, corresponding to each line read from the
* input stream, or an empty list if the end of the stream has been reached.
* @throws IOException If an I/O error occurs
*/
public static List<String> readLine(InputStream in) throws IOException {
List<String> result = new LinkedList<>();
while (in.available() == 0) {
Utility.waitSomeTime(10);
}
while (in.available() != 0)
{
byte[] b = readBytes(in);
if (b != null && b.length > 0) {
String res = new String(b);
String[] l = null;
if (res.indexOf('\r') != -1) {
res = res.replace("\n", "");
l = res.split("\r");
} else if (res.indexOf('\n') != -1) {
res = res.replace("\r", "");
l = res.split("\n");
}
if (l != null) {
result.addAll(Arrays.asList(l));
}
}
}
return result;
}
/**
* Send the data contained in the given array of bytes through the output
* stream. It raises an IOException if something goes wrong.
* The method returns the amount of bytes sent.
*
* @param out The Output Stream to send the data to.
* @param toSend The data to send
* @throws IOException If an I/O error occurs
*/
public static void writeLine(OutputStream out, byte[] toSend) throws IOException {
if (toSend[toSend.length - 1] == '\n' || toSend[toSend.length - 1] == '\r')
out.write(toSend);
else {
byte[] temp = new byte[toSend.length + 2];
System.arraycopy(toSend, 0, temp, 0, toSend.length);
temp[temp.length - 2] = (byte) '\r';
temp[temp.length - 1] = (byte) '\n';
out.write(temp);
}
out.flush();
}
/**
* Method to use to access a file in your resources folder...
* @param pathName folder's name (if exists) from `resources`
* @param fileName Name of the file to access
*
* @return A BufferedReader related to the file you want to work with, or null if the file could not be reached.
*/
public static BufferedReader fileParser(String pathName, String fileName) {
// set relative path
InputStream is;
if (pathName == null) {
is = ClassLoader.getSystemClassLoader().getResourceAsStream(fileName);
} else {
is = ClassLoader.getSystemClassLoader().getResourceAsStream(pathName + "/" + fileName);
}
if (is != null) {
return new BufferedReader(new InputStreamReader(is));
}
return null;
}
// DEBUG System.out
public static void DEBUG(String className, String method, String msg) {
DEBUG(null, className, method, msg);
}
public static void DEBUG(Object object, String method, String msg) {
String className = object.getClass().getSimpleName();
String[] packages = object.getClass().getPackage().getName().split("\\.");
if (packages.length > 1)
DEBUG(packages[packages.length-1], className, method, msg);
else if (packages.length == 1)
DEBUG(packages[0], className, method, msg);
else
DEBUG(null, className, method, msg);
}
public static void DEBUG(String packageName, String className, String method, String msg) {
final int nameLength = 25;
int millis = Calendar.getInstance().get(Calendar.MILLISECOND);
SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
className = className.trim().replace("[", "").replace("]", "");
if (packageName != null)
className = packageName + ":" + className;
String cn = " [" + className + "] ";
StringBuilder logMsg = new StringBuilder();
// set the time
logMsg.append(sdf.format(Calendar.getInstance().getTime())).append(".").append(String.format("%3d", millis));
// Append Packages and ClassName
logMsg.append(cn);
// Append Method
StringBuilder met = new StringBuilder(method.trim().replace("(", "").replace(")", ""));
met.append("() > ");
while (met.length() < nameLength) {
met.append(" ");
}
logMsg.append(met);
// Append message if exists
if (msg != null) {
logMsg.append(msg);
}
if (logMsg.toString().endsWith("\n")) {
System.out.print(logMsg);
} else {
System.out.println(logMsg);
}
}
}

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src/main/java/ch/hevs/isi/web/package-info.java Normal file
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package ch.hevs.isi.web;