From d588719d44c08306c39770312cc42d7f4763fb45 Mon Sep 17 00:00:00 2001
From: gunu3371 <55932910+gunu3371@users.noreply.github.com>
Date: Tue, 16 Jul 2024 00:31:47 +0900
Subject: [PATCH] Update service.py
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매세지 브로드캐스팅 기능 추가
---
 service.py | 105 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 103 insertions(+), 2 deletions(-)

diff --git a/service.py b/service.py
index b93ef4e..531e37e 100755
--- a/service.py
+++ b/service.py
@@ -3,9 +3,11 @@ import os
 import time
 import subprocess
 import logging
-import threading
 from logging.handlers import RotatingFileHandler, TimedRotatingFileHandler
 import signal
+import socket
+import json
+import datetime
 
 class GracefulKiller:
   kill_now = False
@@ -58,7 +60,7 @@ class Logger:
     def __init__(self):
         self.logger = logging.getLogger()
         self.logger.setLevel(logging.INFO)
-        formatter = logging.Formatter('%(asctime)s %(levelname)s: %(message)s', datefmt='%Z %Y:%m:%d %H:%M:%S')
+        formatter = logging.Formatter('%(asctime)s %(levelname)s: %(message)s', datefmt='%Z %Y/%m/%d %H:%M:%S')
         file_handler = RotatingFileHandler('./log/ups.log', maxBytes=1024*1024*10, backupCount=10)
         file_handler.setFormatter(formatter)
         consoleHandler = logging.StreamHandler()
@@ -81,10 +83,108 @@ class Logger:
     def crit(self,message):
         self.logger.critical(message)
 
+class PowerDB:
+    def __init__(self):
+        self.dbname = './powerdb.json'
+        if not 'data' in json.load(self.dbname):
+            json.dump({'data':[]},self.dbname)
+
+    def offline(self):
+        db = json.load(self.dbname)
+        db['data'].append({'time':datetime.datetime.now(datetime.UTC).strftime("%Y/%m/%d %H:%M:%S.%f %Z"),'status':'offline','ACstat':False})
+        json.dump({'data':db},self.dbname)
+
+    def online(self):
+        db = json.load(self.dbname)
+        db['data'].append({'time':datetime.datetime.now(datetime.UTC).strftime("%Y/%m/%d %H:%M:%S.%f %Z"),'status':'online','ACstat':True})
+        json.dump({'data':db},self.dbname)
+
+    def lastoff(self):
+        db = json.load(self.dbname)
+        for i in reversed(db['data']):
+            if i['ACstat'] == True:
+                lof = i['time']
+        lof = time.strptime(lof, '%Y/%m/%d %H:%M:%S.%f %Z')
+        ntime = datetime.datetime.now(datetime.UTC)
+
+class Broadcast:
+    def __init__(self,broadcast_ip='255.255.255.255',port=51547):
+        self.broadcast_ip = broadcast_ip
+        self.port = port
+        self.sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+        self.sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
+
+    def send(self,message:dict):
+        message = json.dumps(message)
+        encoded_message = self.__hamming_encode(''.join(format(ord(c), '08b') for c in message))
+        self.sock.sendto(encoded_message.encode('utf-8'), (self.broadcast_ip, self.port))
+
+    @staticmethod
+    def __hamming_encode(data):
+        data_bits = [int(bit) for bit in data]
+        m = len(data_bits)
+        r = 1
+
+        while (2 ** r) < (m + r + 1):
+            r += 1
+
+        hamming_code = [0] * (m + r)
+        j = 0
+        for i in range(1, m + r + 1):
+            if i == 2 ** j:
+                j += 1
+            else:
+                hamming_code[i - 1] = data_bits.pop(0)
+
+        for i in range(r):
+            position = 2 ** i
+            value = 0
+            for j in range(1, m + r + 1):
+                if j & position and j != position:
+                    value ^= hamming_code[j - 1]
+            hamming_code[position - 1] = value
+
+        return ''.join(map(str, hamming_code))
+
+    @staticmethod
+    def __hamming_decode(data):
+        data_bits = [int(bit) for bit in data]
+        m = len(data_bits)
+        r = 0
+
+        while (2 ** r) < m:
+            r += 1
+
+        error_pos = 0
+        for i in range(r):
+            position = 2 ** i
+            value = 0
+            for j in range(1, m + 1):
+                if j & position:
+                    value ^= data_bits[j - 1]
+            if value:
+                error_pos += position
+
+        if error_pos:
+            data_bits[error_pos - 1] ^= 1
+
+        decoded_data = []
+        j = 0
+        for i in range(1, m + 1):
+            if i != 2 ** j:
+                decoded_data.append(data_bits[i - 1])
+            else:
+                j += 1
+
+        return ''.join(map(str, decoded_data))
+
+
 killer = GracefulKiller()
 log = Logger()
 log.info('UPS service is starting')
 ups = UPS()
+broad = Broadcast()
+# ac = PowerDB()
 
 try:
     import pwmio
@@ -164,5 +264,6 @@ while not killer.kill_now:
     time.sleep(0.5)
     buz.off()
     time.sleep(0.5)
+    broad.send({'msg':'test'})
 buz.off()
 log.info('UPS service stopped successfully')