mirror of
https://github.com/thiagoralves/OpenPLC_v3.git
synced 2025-12-13 07:20:30 +08:00
241 lines
8.2 KiB
Python
241 lines
8.2 KiB
Python
#Use this for OpenPLC console: http://eyalarubas.com/python-subproc-nonblock.html
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import subprocess
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import socket
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import errno
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import time
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from threading import Thread, Lock
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from queue import Queue, Empty
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import os.path
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intervals = (
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('weeks', 604800), # 60 * 60 * 24 * 7
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('days', 86400), # 60 * 60 * 24
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('hours', 3600), # 60 * 60
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('minutes', 60),
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('seconds', 1),
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)
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def display_time(seconds, granularity=2):
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result = []
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for name, count in intervals:
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value = seconds // count
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if value:
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seconds -= value * count
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if value == 1:
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name = name.rstrip('s')
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result.append("{} {}".format(value, name))
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return ', '.join(result[:granularity])
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class NonBlockingStreamReader:
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end_of_stream = False
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def __init__(self, stream):
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'''
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stream: the stream to read from.
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Usually a process' stdout or stderr.
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'''
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self._s = stream
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self._q = Queue()
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def _populateQueue(stream, queue):
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'''
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Collect lines from 'stream' and put them in 'queue'.
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'''
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#while True:
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while (self.end_of_stream == False):
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line = stream.readline().decode('utf-8')
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if line:
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queue.put(line)
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if "Compilation finished with errors!" in line or "Compilation finished successfully!" in line:
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self.end_of_stream = True
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else:
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self.end_of_stream = True
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raise UnexpectedEndOfStream
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self._t = Thread(target = _populateQueue, args = (self._s, self._q))
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self._t.daemon = True
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self._t.start() #start collecting lines from the stream
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def readline(self, timeout = None):
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try:
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return self._q.get(block = timeout is not None,
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timeout = timeout)
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except Empty:
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return None
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class UnexpectedEndOfStream(Exception): pass
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class runtime:
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def __init__(self):
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self.project_file = ""
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self.project_name = ""
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self.project_description = ""
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self.compilation_status_str = ""
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self.compilation_error_str = ""
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self.compilation_object = None
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self.compilation_error = None
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self.runtime_status = "Stopped"
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def start_runtime(self):
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if (self.status() == "Stopped"):
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self.theprocess = subprocess.Popen(['./core/openplc']) # XXX: iPAS
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self.runtime_status = "Running"
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def _rpc(self, msg, timeout=1000):
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data = ""
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if not self.runtime_status == "Running":
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return data
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try:
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s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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s.connect(('localhost', 43628))
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s.send(f'{msg}\n'.encode('utf-8'))
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data = s.recv(timeout).decode('utf-8')
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s.close()
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self.runtime_status = "Running"
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except socket.error as serr:
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print(f'Socket error during {msg}, is the runtime active?')
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self.runtime_status = "Stopped"
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return data
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def stop_runtime(self):
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if (self.status() == "Running"):
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self._rpc(f'quit()')
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self.runtime_status = "Stopped"
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while self.theprocess.poll() is None: # XXX: iPAS, to prevent the defunct killed process.
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time.sleep(1) # https://www.reddit.com/r/learnpython/comments/776r96/defunct_python_process_when_using_subprocesspopen/
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def compile_program(self, st_file):
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if (self.status() == "Running"):
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self.stop_runtime()
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self.is_compiling = True
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self.compilation_status_str = ""
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# Extract debug information from program
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with open('./st_files/' + st_file, "r") as f:
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combined_lines = f.read()
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combined_lines = combined_lines.split('\n')
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program_lines = []
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c_debug_lines = []
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for line in combined_lines:
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if line.startswith('(*DBG:') and line.endswith('*)'):
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c_debug_lines.append(line[6:-2])
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else:
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program_lines.append(line)
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if len(c_debug_lines) == 0:
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c_debug = ''
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# Could not find debug info on program uploaded
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if os.path.isfile('./st_files/' + st_file + '.dbg'):
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# Debugger info exists on file - open it
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with open('./st_files/' + st_file + '.dbg', "r") as f:
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c_debug = f.read()
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else:
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# No debug info... probably a program generated from the old editor. Use the blank debug info just to compile the program
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with open('./core/debug.blank', "r") as f:
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c_debug = f.read()
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f.close()
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# Write c_debug file
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with open('./core/debug.cpp', "w") as f:
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f.write(c_debug)
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# Start compilation
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try:
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a = subprocess.Popen(['./scripts/compile_program.sh', str(st_file)], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
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self.compilation_object = NonBlockingStreamReader(a.stdout)
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# self.compilation_error = NonBlockingStreamReader(a.stderr)
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except Exception as e:
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print(f"Error starting compilation: {e}")
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else:
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# Debug info was extracted from program
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program = '\n'.join(program_lines)
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c_debug = '\n'.join(c_debug_lines)
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# Write c_debug file
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with open('./core/debug.cpp', "w") as f:
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f.write(c_debug)
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#Write program and debug files
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with open('./st_files/' + st_file, "w") as f:
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f.write(program)
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with open('./st_files/' + st_file + '.dbg', "w") as f:
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f.write(c_debug)
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# Start compilation
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a = subprocess.Popen(['./scripts/compile_program.sh', str(st_file)], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
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self.compilation_object = NonBlockingStreamReader(a.stdout)
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# self.compilation_error = NonBlockingStreamReader(a.stderr)
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def compilation_status(self):
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while self.compilation_object != None:
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line = self.compilation_object.readline()
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if not line: break
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self.compilation_status_str += line
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return self.compilation_status_str
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def get_compilation_error(self):
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while self.compilation_error != None:
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line = self.compilation_error.readline()
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if not line: break
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self.compilation_error_str += line
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return self.compilation_error_str
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def status(self):
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try:
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if (self.compilation_object != None):
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if (self.compilation_object.end_of_stream == False):
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return "Compiling"
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except Exception as e:
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print(f"Error checking compilation status: {e}")
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if not self._rpc('exec_time()', 10000):
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self.runtime_status = "Stopped"
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return self.runtime_status
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def start_modbus(self, port_num):
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return self._rpc(f'start_modbus({port_num})')
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def stop_modbus(self):
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return self._rpc(f'stop_modbus()')
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def start_snap7(self):
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return self._rpc(f'start_snap7()')
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def stop_snap7(self):
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return self._rpc(f'stop_snap7()')
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def start_dnp3(self, port_num):
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return self._rpc(f'start_dnp3({port_num})')
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def stop_dnp3(self):
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return self._rpc(f'stop_dnp3()')
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def start_enip(self, port_num):
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return self._rpc(f'start_enip({port_num})')
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def stop_enip(self):
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return self._rpc(f'stop_enip()')
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def start_pstorage(self, poll_rate):
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return self._rpc(f'start_pstorage({poll_rate})')
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def stop_pstorage(self):
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return self._rpc(f'stop_pstorage()')
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def logs(self):
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return self._rpc(f'runtime_logs()',1000000)
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def exec_time(self):
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return self._rpc(f'exec_time()',10000) or "N/A"
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