#!/usr/bin/env python3 import os import sys ##import utils.Logger as L import time import threading, multiprocessing # TODO ? c'etait dans Agent #from threading import Thread #import socket ##from .Agent import Agent sys.path.append("..") from agent.Agent import Agent, build_agent, StoppableThreadEvenWhenSleeping from common.models import AgentDeviceStatus, AgentCmd, get_or_create_unique_row_from_model sys.path.append("../../..") from device_controller.abstract_component.device_controller import ( DCCNotFoundException, UnknownGenericCmdException, UnimplementedGenericCmdException, UnknownNativeCmdException, DeviceController, DeviceCmd, DeviceTimeoutException ) ##log = L.setupLogger("AgentXTaskLogger", "AgentX") """ ================================================================= class StoppableThread ================================================================= """ class StoppableThreadEvenWhenSleeping(threading.Thread): # Thread class with a stop() method. The thread itself has to check # regularly for the stopped() condition. # It stops even if sleeping # See https://python.developpez.com/faq/?page=Thread#ThreadKill # See also https://www.oreilly.com/library/view/python-cookbook/0596001673/ch06s03.html def __init__(self, *args, **kwargs): #super(StoppableThreadSimple, self).__init__(*args, **kwargs) super().__init__(*args, **kwargs) self._stop_event = threading.Event() #def stop(self): def terminate(self): self._stop_event.set() def stopped(self): return self._stop_event.is_set() def wait(self, nbsec:float=2.0): self._stop_event.wait(nbsec) class AgentDevice(Agent): """ How to run this agent exec_specific_cmd() method ? - True = inside a Thread (cannot be killed, must be asked to stop, and inadequate for computation) - False = inside a Process If thread, displays : >>>>> Thread: starting execution of command specific1 >>>>> Thread: PID: 2695, Process Name: MainProcess, Thread Name: Thread-1 ... >>>>> Thread: starting execution of command specific2 >>>>> Thread: PID: 2695, Process Name: MainProcess, Thread Name: Thread-2 ... >>>>> Thread: starting execution of command specific3 >>>>> Thread: PID: 2695, Process Name: MainProcess, Thread Name: Thread-3 If process, displays : >>>>> Thread: starting execution of command specific1 >>>>> Thread: PID: 2687, Process Name: Process-1, Thread Name: MainThread ... >>>>> Thread: starting execution of command specific2 >>>>> Thread: PID: 2689, Process Name: Process-2, Thread Name: MainThread ... >>>>> Thread: starting execution of command specific3 >>>>> Thread: PID: 2690, Process Name: Process-3, Thread Name: MainThread """ _current_device_cmd = None _current_device_cmd_thread = None # Default host and port of the device controller _device_ctrl = None _device_sim = None HOST, PORT = None, None _thread_device_simulator = None _agent_device_status = None # FOR TEST ONLY # Run this agent in simulator mode TEST_MODE = False # Run the assertion tests at the end TEST_WITH_FINAL_TEST = False #TEST_MAX_DURATION_SEC = None TEST_MAX_DURATION_SEC = 100 # Who should I send commands to ? #TEST_COMMANDS_DEST = "myself" TEST_COMMANDS_DEST = "AgentB" # Scenario to be executed TEST_COMMANDS_LIST = [ # Ask receiver to delete all its previous commands "flush_commands", "go_active", # Because of this command, the receiver agent : # - will no more send any new command # - will only execute "generic" commands (and not the "specific" ones) "go_idle", # Not executed (skipped) because receiver agent is now "idle" #"specific0", # Because of this command, the receiver agent # will now be able to send new commands "go_active", # Executed because recipient agent is now "active" "specific1", # should abort previous command (specific1) "abort", # Executed completely because no abort "specific2", # fully executed, result is 7 "eval 4+3", "go_idle", "exit", ] # with thread RUN_IN_THREAD = True # with process #RUN_IN_THREAD = False _thread_total_steps_number = 1 # New agent STATUS specific to AgentDevice STATUS_SPECIFIC_PROCESS = "IN_SPECIFIC_PROCESS" """ ================================================================= FUNCTIONS RUN INSIDE MAIN THREAD ================================================================= """ ##def __init__(self, config_filename, RUN_IN_THREAD, device_controller:DeviceController, host, port, device_simulator): #def __init__(self, config_filename, RUN_IN_THREAD, device_controller:DeviceController, host, port, DEBUG_MODE=False): def __init__(self, config_filename, RUN_IN_THREAD, device_controller: DeviceController, host, port): ##if name is None: name = self.__class__.__name__ #super().__init__(name, config_filename, RUN_IN_THREAD) #super().__init__(config_filename, RUN_IN_THREAD, DEBUG_MODE) super().__init__(config_filename, RUN_IN_THREAD) # (EP) etait avant dans Agent self._set_agent_device_aliases_from_config(self.name) self.RUN_IN_THREAD = RUN_IN_THREAD self.HOST, self.PORT = host, port self._device_ctrl = device_controller ##self._device_sim = device_simulator # Initialize the device table status # If table is empty, create a default 1st row ##self._agent_device_status = get_or_create_unique_row_from_model(AgentDeviceStatus) self._agent_device_status = AgentDeviceStatus.getStatusForAgent(self.name) """ if not AgentDeviceTelescopeStatus.objects.exists(): self.printd("CREATE first row") self._agent_device_status = AgentDeviceTelescopeStatus.objects.create(id=1) # Get 1st row (will be updated at each iteration by routine_process() with current device status) self.printd("GET first row") self._agent_device_status = AgentDeviceTelescopeStatus.objects.get(id=1) """ # Initialize the device socket # Port local AK 8085 = redirigé sur l’IP du tele 192.168.0.12 sur port 11110 ##HOST, PORT = "82.64.28.71", 11110 #HOST, PORT = "localhost", 11110 #self._device_ctrl = TelescopeControllerGEMINI(host, port, True) ##self._device_ctrl = device_controller(HOST, PORT, True) ##self._device_ctrl = device_controller(host, port, True) #self._log.printd("init done") self.printd("init done") #TODO: def _set_agent_device_aliases_from_config(self, agent_alias): for a in self._my_client_agents_aliases: # TODO: activer ##self._my_client_agents[a] = self.config.get_paramvalue(a,'general','real_agent_device_name') pass # @override def _init(self): # --- Set the mode according the startmode value ##agent_alias = self.__class__.__name__ ##self.set_mode_from_config(agent_alias) # If in test and simulator mode ==> set my DC as connected to localhost (simulator server) if self.is_in_test_mode() and self.WITH_SIMULATOR: # START device SIMULATOR (in a thread) so that we can connect to it in place of the real device self.HOST = "localhost" ''' self._thread_device_simulator = threading.Thread(target=self.device_simulator_run) self._thread_device_simulator.start() ''' # Create instance of a SPECIFIC device controller (device client) # Ex: this can be the Gemini or the SBIG (...) DC #self._device_ctrl = self._device_ctrl(self.HOST, self.PORT, DEBUG=self.DEBUG_MODE) self._device_ctrl = self._device_ctrl(self.HOST, self.PORT) # Device socket init # (optional) Only useful for TCP (does nothing for UDP) self._device_ctrl._connect_to_device() if self.DEBUG_MODE: self._device_ctrl.print_available_cmds() # Telescope (long) init # TODO: def is_using_simulator(self): return self.WITH_SIMULATOR ''' def device_simulator_run(self): #HOST, PORT = "localhost", 11110 #with get_SocketServer_UDP_TCP(HOST, PORT, "UDP") as myserver: self.printd("Starting device simulator on (host, port): ", self.HOST, self.PORT) self._device_sim.serve_forever(self.PORT) #with get_SocketServer_UDP_TCP(self.HOST, self.PORT, "UDP") as myserver: myserver.serve_forever() #'' myserver = get_SocketServer_UDP_TCP(self.HOST, self.PORT, "UDP") myserver.serve_forever() #'' ''' ''' # @override def load_config(self): super().load_config() ''' ''' # @override def update_survey(self): super().update_survey() ''' ''' # @override def get_next_command(self): return super().get_next_command() ''' # @override def do_log(self): super().do_log() # @override parent class (Agent) def routine_process_body(self): self.print("Getting my device status information and storing it in DB)") # Save current device status to DB #AgentDeviceTelescopeStatus.objects.create(radec=myradec) #if not self.is_running_specific_cmd(): self._save_device_status() self.printd("Status saved in DB") #time.sleep(3) """ ================================================================================================ DEVICE SPECIFIC FUNCTIONS (abstract for Agent, overriden and implemented by AgentDevice) ================================================================================================ """ ''' # @override superclass (Agent) method def is_other_level_cmd(self, cmd: AgentCmd): return self.is_device_level_cmd(cmd) ''' # I delegate this command to my DC # => Execute it only if I am active and no currently running another device level cmd # => Long execution time, so I will execute it in parallel (in a new thread or process) def is_device_level_cmd(self, cmd: AgentCmd): return self._device_ctrl.is_valid_cmd(DeviceCmd(cmd.full_name)) def _process_device_level_cmd(self): log.info("(DEVICE LEVEL CMD)") try: self.exec_device_cmd_if_possible(cmd) except (UnimplementedGenericCmdException) as e: #except (UnknownGenericCmdException, UnimplementedGenericCmdException, UnknownNativeCmdException) as e: log.e(f"EXCEPTION caught by {type(self).__name__} (from Agent mainloop) for command '{cmd.name}'", e) log.e("Thus ==> ignore this command") cmd.set_result(e) #cmd.set_as_killed_by(type(self).__name__) cmd.set_as_skipped() #raise def is_device_generic_but_UNIMPLEMENTED_cmd(self, cmd:AgentCmd): return self._device_ctrl.is_generic_but_UNIMPLEMENTED_cmd(DeviceCmd(cmd.full_name)) def _is_running_device_cmd(self): #return (self._current_device_cmd_thread is not None) or self._current_device_cmd_thread.is_alive() #return (self._current_device_cmd_thread is None) or not self._current_device_cmd_thread.is_alive() return self._current_device_cmd_thread and self._current_device_cmd_thread.is_alive() # @override superclass (Agent) method def exec_device_cmd_if_possible(self, cmd:AgentCmd): self.__set_status(self.STATUS_SPECIFIC_PROCESS) #self.print(f"Starting execution of a DEVICE cmd {cmd}") self.print("Starting execution of a DEVICE cmd...") self.printd(cmd) if self._is_idle(): self.print("I am IDLE ==> I mark the cmd SKIPPED and ignore it") cmd.set_result("Skipped because AgentDevice idle") cmd.set_as_skipped() return # TODO: changer ça car on devrait pouvoir executer N cmds en parallèle... if self._is_running_device_cmd(): self.print("There is still a thread executing a command ==> I cannot execute this new one now (I will try again to execute it at next iteration)") return # DC (DEVICE CONTROLLER) level command: if self.is_device_generic_but_UNIMPLEMENTED_cmd(cmd): raise UnimplementedGenericCmdException() ''' This is no more necessary as all these checks have already been done BEFORE calling this method # GENERIC device cmd if self.is_device_generic_cmd(cmd): if not device_has_generic_cmd(cmd): raise UnknownGenericCmdException(cmd) elif not device_has_native_for_generic_cmd(cmd): raise UnimplementedGenericCmdException(cmd) # NATIVE device cmd elif not device_has_native_cmd(cmd): raise UnknownNativeCmdException() ''' # ==> the Agent sends (delegates) it to its dedicated DC, via a sub-thread or a process """ Dans le cas du Majordome, cette methode doit lancer la prise d'une séquence. La sequence elle même va être une boucle. Donc on peut voir une séquence comme un appel unique à une fonction qui va durer un certain temps (max 20 min par exemple) mais dans cette méthode il y a une boucle sur la prise des images. """ self.printd("Starting DEVICE cmd processing...") self._current_device_cmd = cmd # Update read time to say that the command has been READ cmd.set_read_time() #self._current_thread = threading.Thread(target=self.exec_command) self.print("Launching device cmd in a thread (or process)...") # Run in a thread if self.RUN_IN_THREAD: self.printd("(run device cmd in a thread)") self._current_device_cmd_thread = StoppableThreadEvenWhenSleeping(target=self._thread_exec_device_cmd) #self._current_device_cmd_thread = StoppableThreadEvenWhenSleeping(target=self.exec_specific_cmd, args=(cmd,)) #self._current_thread = threading.Thread(target=self.exec_command) #self._current_device_cmd_thread = StoppableThread(target=self.exec_specific_cmd, args=(cmd,)) #self._current_device_cmd_thread = threading.Thread(target=self.exec_specific_cmd, args=(cmd,)) #self._current_device_cmd_thread = thread_with_exception('thread test') # Run in a process else: self.printd("(run cmd in a process)") # close the database connection first, it will be re-opened in each process db.connections.close_all() self._current_device_cmd_thread = multiprocessing.Process(target=self._thread_exec_device_cmd) #self._current_device_cmd_thread = multiprocessing.Process(target=self.exec_specific_cmd, args=(cmd,)) self._current_device_cmd_thread.start() #self._current_device_cmd_thread = threading.Thread(target=self.exec_specific_cmd, args=(cmd,)) #self._current_device_cmd_thread = thread_with_exception('thread test') #my_thread.join() #self.waitfor(self.subloop_waittime) self.printd("Ending specific process (thread has been launched)") def _save_device_status(self): try: self._agent_device_status.status = self.get_device_status() except DeviceTimeoutException as e: self.log_c("DeviceTimeoutException while getting device status", e) self._agent_device_status.save() # To be overriden by subclass def get_device_status(self): TIMEOUT = False if TIMEOUT: raise DeviceTimeoutException() return 'Abstract status' # @override superclass (Agent) def _TEST_test_results_other(self, commands): # (EP) moved from Agent # Now test that any "AD get_xx" following a "AD set_xx value" command has result = value for i,cmd_set in enumerate(commands): if cmd_set.name.startswith('set_'): commands_after = commands[i+1:] for cmd_get in commands_after: if cmd_get.name.startswith('get_') and cmd_get.name[4:]==cmd_set.name[4:] and cmd_get.device_type==cmd_set.device_type: log.info("cmd_get.result == cmd_set.args ?" + str(cmd_get.result) + ' ' + str(cmd_set.args)) assert cmd_get.get_result() == ','.join(cmd_set.args), "A get_xx command did not gave the expected result as set by a previous set_xx command" break # @override parent class (Agent) def _do_things_before_exit(self, abort_cmd_sender): self._kill_running_device_cmd_if_exists(abort_cmd_sender) def _kill_running_device_cmd_if_exists(self, abort_cmd_sender): # AGENT level if not self._is_running_device_cmd(): self.print("...No current device command thread to abort...") else: self.print(f"Killing command {self._current_device_cmd.name}") # Ask the thread to stop itself #self._current_device_cmd_thread.stop() #self._current_device_cmd_thread._stop() #self._current_device_cmd_thread.shutdown() #threading._shutdown() #self._current_device_cmd_thread.raise_exception() self._current_device_cmd.set_as_killed_by(abort_cmd_sender) self._current_device_cmd_thread.terminate() # Now, wait for the end of the thread if self.RUN_IN_THREAD: self._current_device_cmd_thread.join() self._current_device_cmd_thread = None #self._current_device_cmd.set_as_killed() self._current_device_cmd = None # DEVICE specific self.print("Close device socket") try: self._device_ctrl.close() except AttributeError as e: self.log_e("Error on closing the socket (TBC):", e) ''' # Stop device simulator (only if used) if self.is_using_simulator(): self.printd("Stopping device simulator") self._device_sim.stop() ''' """ # @override def specific_process(self, cmd): cmd.set_read_time() cmd.set_as_running() res = self._device_ctrl.execute_cmd(cmd.name) cmd.set_result(str(res)) self.printd("result is", str(res)) if res.ok: self.printd("OK") cmd.set_as_processed() time.sleep(1) """ """ ================================================================= FUNCTIONS RUN INSIDE A SUB-THREAD (OR A PROCESS) (thread_*()) ================================================================= """ def tprintd(self, *args, **kwargs): self.printd('(THREAD):', *args, *kwargs) def _thread_exec_device_cmd(self): assert self._current_device_cmd_thread is not None # thread execution setting up self._thread_exec_device_cmd_start() # Exit if I was asked to stop cmd = self._current_device_cmd if self.RUN_IN_THREAD and threading.current_thread().stopped(): self.tprintd(f">>>>> Thread (cmd {cmd.name}): I received the stop signal, so I stop (in error)") exit(1) if cmd.name == "do_eval": res = eval(cmd.args) else: try: res = self.exec_device_cmd(cmd) except (DCCNotFoundException, UnknownGenericCmdException, UnimplementedGenericCmdException, UnknownNativeCmdException) as e: self.log_e(f"THREAD EXCEPTION caught by {type(self).__name__} (from thread)", e) #raise cmd.set_result(e) cmd.set_as_killed_by(type(self).__name__) #time.sleep(2) self.log_e(">>>>> Thread: execution of command", cmd.name, "is now aborted") self._current_device_cmd = None self._current_device_cmd_thread.terminate() # (EP) ...NOT SURE THAT BELOW THIS LINE, SOMETHING WILL BE EXECUTED, because THIS current thread is being killed... ''' # Now, wait for the end of the thread if self.RUN_IN_THREAD: self._current_device_cmd_thread.join() ''' self._current_device_cmd_thread = None #res = "ERROR" return cmd.set_result(res) ''' # processing body (main) # Specific case of the EVAL command #if self._current_device_cmd.name.startswith("eval"): if self._current_device_cmd.name == "do_eval": self.thread_set_total_steps_number(1) self.thread_exec_device_cmd_step(1, self.cmd_step_eval) #return # to be overriden by subclasses else: self.thread_exec_specific_cmd_main() ''' # thread execution tearing down self._thread_exec_device_cmd_end() ''' except TimeoutError: pass ''' #def exec_specific_cmd_start(self, cmd:Command): def _thread_exec_device_cmd_start(self): cmd = self._current_device_cmd """ specific command execution setting up """ #cmd = self.get_current_device_cmd() self.tprintd(">>>>> Thread: starting execution of command", cmd.name) self.tprintd(">>>>> Thread: PID: %s, Process Name: %s, Thread Name: %s" % ( os.getpid(), multiprocessing.current_process().name, threading.current_thread().name) ) cmd.set_as_running() """ if self.RUN_IN_THREAD: cmd.set_as_running() else: with transaction.atomic(): cmd.set_as_running() """ # Define your own command step(s) here def cmd_step(self, step:int): cmd = self._current_device_cmd """ cmd.result = f"in step #{step}/{self._thread_total_steps_number}" cmd.save() """ cmd.set_result(f"in step #{step}/{self._thread_total_steps_number}") def cmd_step_eval(self, step:int): cmd = self._current_device_cmd #cmd_args = self._current_device_cmd.full_name.split()[1] """ cmd.result = f"in step #{step}/{self._thread_total_steps_number}" cmd.save() cmd.set_result(eval(cmd_args)) """ cmd.set_result(eval(cmd.args)) # Default body of the specific processing # Should be overriden by subclass def OLD_thread_exec_device_cmd_main_OLD(self): """ cmd = self._current_device_cmd self.printd("Doing nothing, just sleeping...") self.sleep(3) """ # This is optional self.thread_set_total_steps_number(5) # HERE, write your own scenario # scenario OK self.thread_exec_device_cmd_step(1, self.cmd_step, 1) self.thread_exec_device_cmd_step(2, self.cmd_step, 3) self.thread_exec_device_cmd_step(3, self.cmd_step, 5) self.thread_exec_device_cmd_step(4, self.cmd_step, 10) self.thread_exec_device_cmd_step(5, self.cmd_step, 4) # ... as many as you need """ other scenario self.thread_exec_device_cmd_step(1, self.cmd_step1, 1) self.thread_exec_device_cmd_step(2, self.cmd_step2, 2) self.thread_exec_device_cmd_step(3, self.cmd_step1, 2) self.thread_exec_device_cmd_step(4, self.cmd_step3, 2) self.thread_exec_device_cmd_step(5, self.cmd_step1, 3) """ def _thread_exec_device_cmd_end(self): """ specific command execution tearing down """ cmd = self._current_device_cmd cmd.set_as_processed() """ if self.RUN_IN_THREAD: cmd.set_as_processed() else: with transaction.atomic(): cmd.set_as_processed() """ self.print(f">>>>> Thread: ended execution of command '{cmd.name}'") cmd = None # No more current thread #self._current_device_cmd_thread = None # Default body of a specific cmd step # Should be overriden by subclass def thread_exec_device_cmd_step(self, step:int, cmd_step_function, sleep_time:float=1.0): # Exit if I was asked to stop cmd = self._current_device_cmd if self.RUN_IN_THREAD and threading.current_thread().stopped(): self.tprintd(f">>>>> Thread (cmd {cmd.name}): I received the stop signal, so I stop (in error)") exit(1) self.tprintd(f">>>>> Thread (cmd {cmd.name}): step #{step}/{self._thread_total_steps_number}") # call a specific function to be defined by subclass cmd_step_function(step) # Wait for a specific time (interruptible) self.sleep(sleep_time) ''' def thread_stop_if_asked(self): assert self._current_device_cmd_thread is not None if self.RUN_IN_THREAD and threading.current_thread().stopped(): self.printd("(Thread) I received the stop signal, so I stop (in error)") exit(1) ''' def thread_set_total_steps_number(self, nbsteps): self._thread_total_steps_number = nbsteps # @override parent class (Agent) def sleep(self, nbsec:float=2.0): # thread if self._current_device_cmd_thread and self.RUN_IN_THREAD: self._current_device_cmd_thread.wait(nbsec) # process (or main thread) else: time.sleep(nbsec) # This method is also called DIRECTLY from routine_process().get_device_status() (NOT FROM A THREAD) # @override parent class (Agent) def exec_device_cmd(self, cmd:AgentCmd): #cmd = self._current_device_cmd self.tprintd("*** DEVICE cmd name is", cmd.name) self.tprintd("*** PASS IT TO DEVICE TYPE", cmd.device_type) time.sleep(2) try: res = self._device_ctrl.exec_cmd(cmd.full_name) except (UnknownGenericCmdException, UnimplementedGenericCmdException, DCCNotFoundException, UnknownNativeCmdException) as e: self.log_e(f"THREAD EXCEPTION caught by {type(self).__name__} (from AD)", e) raise self.tprintd("result is", str(res)) if res.ok: self.tprintd("OK") time.sleep(1) return res # @override superclass (Agent) method def OLD_cmd_step_OLD(self, step:int): cmd = self._current_device_cmd self.printd("cmd name is", cmd.name) #res = self._device_ctrl.execute_cmd(cmd.name_and_args) res = self._device_ctrl.exec_cmd(cmd.full_name) ##cmd.set_result(str(res)) self.printd("result is", str(res)) if res.ok: self.printd("OK") #cmd.set_as_processed() time.sleep(1) #cmd.set_result(f"in step #{step}/{self._thread_total_steps_number}") cmd.set_result(res) # @override def OLD_thread_exec_specific_cmd_main_OLD(self): # This is optional self.thread_set_total_steps_number(1) # HERE, write your own scenario self.thread_exec_device_cmd_step(1, self.cmd_step, 1) # ... as many as you need """ other scenario self.thread_exec_device_cmd_step(1, self.cmd_step1, 1) self.thread_exec_device_cmd_step(2, self.cmd_step2, 2) self.thread_exec_device_cmd_step(3, self.cmd_step1, 2) self.thread_exec_device_cmd_step(4, self.cmd_step3, 2) self.thread_exec_device_cmd_step(5, self.cmd_step1, 3) """ ''' # @override def exec_specific_cmd_end(self, cmd:Command, from_thread=True): super().exec_specific_cmd_end(cmd, from_thread) ''' def build_agent(Agent_type:Agent, RUN_IN_THREAD=True): agent = Agent.build_agent(Agent_type) agent.RUN_IN_THREAD = RUN_IN_THREAD return agent """ ================================================================= MAIN FUNCTION ================================================================= """ if __name__ == "__main__": # with thread RUN_IN_THREAD=True # with process #RUN_IN_THREAD=False agent = build_agent(AgentDevice, RUN_IN_THREAD=RUN_IN_THREAD) ''' TEST_MODE, WITH_SIM, configfile = extract_parameters() #agent = AgentX() agent = AgentDevice("AgentDevice", configfile, RUN_IN_THREAD) #agent.setSimulatorMode(TEST_MODE) agent.setTestMode(TEST_MODE) agent.setWithSimulator(WITH_SIM) self.printd(agent) ''' agent.run()