guest_worker/sorteerhoed/central_management.py

import logging
import yaml
from sorteerhoed import HITStore
import os
import subprocess
import boto3
import threading
from queue import Queue
from sorteerhoed.plotter import Plotter
import queue
from sorteerhoed.sqs import SqsListener
from sorteerhoed.webserver import Server
import time
from sorteerhoed.Signal import Signal
import io
from PIL import Image
import datetime
from shutil import copyfile


class CentralManagement():
    """
    Central management reads config and controls process flow
    
    The HIT Store is the archive of hits
    mturk thread communicates with mturk
    server thread is tornado communicating with the turkers and with the status interface on the installation
    Plotter thread reads plotter queue and sends it to there
    Scanner is for now a simpe imagescan command
    SQS: thread that listens for updates from Amazon
    """
    def __init__(self, debug_mode):
        self.logger = logging.getLogger("sorteerhoed").getChild('management')
        self.debug = debug_mode
        self.currentHit = None
        
        self.eventQueue = Queue()
        self.isRunning = threading.Event()
        self.isScanning = threading.Event()
        self.scanLock = threading.Lock()

        
    def loadConfig(self, filename, args):
        with open(filename, 'r') as fp:
            self.logger.debug('Load config from {}'.format(filename))
            self.config = yaml.safe_load(fp)
            
        if args.no_plotter:
            self.config['dummy_plotter'] = True
        
        varDb = os.path.join(
#             self.config['storage_dir'],
            'hit_store.db'
            )            
        self.store = HITStore.Store(varDb, logLevel=logging.DEBUG if self.debug else logging.INFO)
        
        self.logger.debug(f"Loaded configuration: {self.config}")
#         self.amazon = 
#         self.server


#         self.panopticon = Panopticon(self, self.config, self.voiceStorage)
    def start(self):
        self.isRunning.set()
        
        try:
            
            # M-turk connection
            MTURK_SANDBOX = 'https://mturk-requester-sandbox.us-east-1.amazonaws.com'
            # https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/mturk.html#MTurk.Client
            self.mturk = boto3.client('mturk',
               aws_access_key_id = self.config['amazon']['user_id'],
               aws_secret_access_key = self.config['amazon']['user_secret'],
               region_name='us-east-1',
               endpoint_url = MTURK_SANDBOX
            )
            
            self.logger.info(f"Mechanical turk: {self.mturk.get_account_balance()}")
            
            self.sqs = SqsListener(self.config, self.eventQueue, self.isRunning)
            sqsThread = threading.Thread(target=self.sqs.start, name='sqs')
            sqsThread.start()
            
            # the plotter itself
            self.plotter = Plotter(self.config, self.eventQueue, self.isRunning, self.scanLock)
            plotterThread = threading.Thread(target=self.plotter.start, name='plotter')
            plotterThread.start()
            
            # webserver for turks and status
            self.server = Server(self.config, self.eventQueue, self.isRunning, self.plotter.q, self.store)
            serverThread = threading.Thread(target=self.server.start, name='server')
            serverThread.start()
            
            # event listener:
            dispatcherThread = threading.Thread(target=self.eventListener, name='dispatcher')
            dispatcherThread.start()
#             
#             
            
            self.eventQueue.put(Signal('start', {'ding':'test'}))
            
            while self.isRunning.is_set():
                time.sleep(.5)
            
        finally:
            self.logger.warning("Stopping Central Managment")
            self.isRunning.clear()
            self.server.stop()
            
    
    def eventListener(self):
        while self.isRunning.is_set():
            try:
                signal = self.eventQueue.get(True, 1)
            except queue.Empty:
                pass
#                 self.logger.log(5, "Empty queue.")
            else:
                """
                Possible events:
                - SQS events: accept/abandoned/returned/submitted
                - webserver events: open, draw, submit
                - scan complete
                - HIT created
                - Plotter complete
                - 
                """
                #TODO: make level debug()
                self.logger.info(f"SIGNAL: {signal}")
                if signal.name == 'start':
                    self.makeHit()
                    pass
                elif signal.name == 'hit.scanned':
                    # TODO: wrap up hit & make new HIT
                    self.currentHit.scanned_at = datetime.datetime.utcnow()
                    self.server.statusPage.set('state', self.currentHit.getStatus())
                    self.makeHit()
                elif signal.name == 'scan.start':
                    pass
                elif signal.name == 'scan.finished':
                    pass
                elif signal.name == 'hit.info':
                    if signal.params['hit_id'] != self.currentHit.id:
                        self.logger.warning(f"hit.info hit_id != currenthit.id: {signal}")
                        continue
                    for name, value in signal.params.items():
                        if name == 'hit_id':
                            continue
                        if name == 'ip':
                            self.currentHit.turk_ip = value
                        if name == 'location':
                            self.currentHit.turk_country = value
                        
                        self.logger.debug(f'Set status: {name} to {value}')
                        self.server.statusPage.set(name, value)
                elif signal.name == 'server.open':
                    self.currentHit.open_page_at = datetime.datetime.utcnow()
                    self.store.saveHIT(self.currentHit)
                    self.setLight(True)
                    self.server.statusPage.set('state', self.currentHit.getStatus())
                    self.server.statusPage.set('hit_opened', self.currentHit.open_page_at)
                elif signal.name == 'server.submit':
                    self.currentHit.submit_page_at = datetime.datetime.utcnow()
                    self.store.saveHIT(self.currentHit)
                    self.plotter.park()
                    self.server.statusPage.set('hit_opened', self.currentHit.open_page_at)
                    # park always triggers a plotter.finished after being processed
                    
                elif signal.name[:4] == 'sqs.':
                    if signal.params['event']['HITId'] != self.currentHit.hit_id:
                        self.logger.warning(f"SQS hit.info hit_id != currenthit.id: {signal}, update status for older HIT")
                        sqsHit = self.store.getHitByRemoteId(signal.params['event']['HITId'])
                        updateStatus = False
                    else:
                        sqsHit = self.currentHit
                        updateStatus = True
                        
                    if signal.name == 'sqs.AssignmentAccepted':
                        self.logger.info(f'Set status progress to accepted')
                        sqsHit.accept_time = datetime.datetime.strptime(signal.params['event']['EventTimestamp'],"%Y-%m-%dT%H:%M:%SZ")
                        sqsHit.worker_id = signal.params['event']['WorkerId']
                        if updateStatus:
                            self.server.statusPage.set('worker_id', sqsHit.worker_id)
                        # {'event': {'HITGroupId': '301G7MYOAJ85NEW128ZDGF5DSBW53S', 'EventType': 'AssignmentAccepted', 'EventTimestamp': '2019-10-23T20:16:10Z', 'HITId': '3IH9TRB0FBAKKZFP3JUD6D9YWQ1I1F', 'AssignmentId': '3BF51CHDTWLN3ZGHRKDUHFKPWIJ0H3', 'WorkerId': 'A1CK46PK9VEUH5', 'HITTypeId': '3EYXOXDEN7RX0YSMN4UMVN01AYKZJ0'}}
                    elif signal.name == 'sqs.AssignmentAbandoned':
                        self.logger.info(f'Set status progress to abandoned')
                        #{'event': {'HITGroupId': '301G7MYOAJ85NEW128ZDGF5DSBW53S', 'EventType': 'AssignmentAbandoned', 'EventTimestamp': '2019-10-23T20:23:06Z', 'HITId': '3JHB4BPSFKKFQ263K4EFULI3LC79QJ', 'AssignmentId': '3U088ZLJVL450PB6MJZUIIUCB6VW0Y', 'WorkerId': 'A1CK46PK9VEUH5', 'HITTypeId': '3EYXOXDEN7RX0YSMN4UMVN01AYKZJ0'}}
                        sqsHit.accept_time = None
                        sqsHit.open_page_at = None
                        if self.currentHit.id == sqsHit.id:
                            if not sqsHit.submit_page_at:
                                self.reset()
                            else:
                                sqsHit.submit_hit_at = datetime.datetime.utcnow() # fake submit
                        if updateStatus:
                            self.setLight(False)
                                                    
                    elif signal.name == 'sqs.AssignmentReturned':
                        self.logger.info(f'Set status progress to returned')
                        sqsHit.accept_time = None
                        sqsHit.open_page_at = None
                        if self.currentHit.id == sqsHit.id:
                            if not sqsHit.submit_page_at:
                                self.reset()
                            else:
                                sqsHit.submit_hit_at = datetime.datetime.utcnow() # fake submit
                        if updateStatus:
                            self.setLight(False)
                        # {'event': {'HITGroupId': '301G7MYOAJ85NEW128ZDGF5DSBW53S', 'EventType': 'AssignmentReturned', 'EventTimestamp': '2019-10-23T20:16:47Z', 'HITId': '3IH9TRB0FBAKKZFP3JUD6D9YWQ1I1F', 'AssignmentId': '3BF51CHDTWLN3ZGHRKDUHFKPWIJ0H3', 'WorkerId': 'A1CK46PK9VEUH5', 'HITTypeId': '3EYXOXDEN7RX0YSMN4UMVN01AYKZJ0'}}
                    elif signal.name == 'sqs.AssignmentSubmitted':
                        # {'MessageId': '4b37dfdf-6a12-455d-a111-9a361eb54d88', 'ReceiptHandle': 'AQEBHc0yAdIrEmAV3S8TIoDCRxrItDEvjy0VQko56/Lb+ifszC0gdZ0Bbed24HGHZYr5DSnWkgBJ/H59ZXxFS1iVEH9sC8+YrmKKOTrKvW3gj6xYiBU2fBb8JRq+sEiNSxWLw2waxr1VYdpn/SWcoOJCv6PlS7P9EB/2IQ++rCklhVwV7RfARHy4J87bjk5R3+uEXUUi00INhCeunCbu642Mq4c239TFRHq3mwM6gkdydK+AP1MrXGKKAE1W5nMbwEWAwAN8KfoM1NkkUg5rTSYWmxxZMdVs/QRNcMFKVSf1bop2eCALSoG6l3Iu7+UXIl4HLh+rHp4bc8NoftbUJUii8YXeiNGU3wCM9T1kOerwYVgksK93KQrioD3ee8navYExQRXne2+TrUZUDkxRIdtPGA==', 'MD5OfBody': '01ccb1efe47a84b68704c4dc611a4d8d', 'Body': '{"Events":[{"Answer":"<?xml version=\\"1.0\\" encoding=\\"ASCII\\"?><QuestionFormAnswers xmlns=\\"http://mechanicalturk.amazonaws.com/AWSMechanicalTurkDataSchemas/2005-10-01/QuestionFormAnswers.xsd\\"><Answer><QuestionIdentifier>surveycode<\\/QuestionIdentifier><FreeText>test<\\/FreeText><\\/Answer><\\/QuestionFormAnswers>","HITGroupId":"301G7MYOAJ85NEW128ZDGF5DSBW53S","EventType":"AssignmentSubmitted","EventTimestamp":"2019-10-30T08:01:43Z","HITId":"3NSCTNUR2ZY42ZXASI4CS5YWV0S5AB","AssignmentId":"3ZAZR5XV02TTOCBR9MCLCNQV1XKCZL","WorkerId":"A1CK46PK9VEUH5","HITTypeId":"3EYXOXDEN7RX0YSMN4UMVN01AYKZJ0"}],"EventDocId":"34af4cd7f2829216f222d4b6e66f3a3ff9ad8ea6","SourceAccount":"600103077174","CustomerId":"A1CK46PK9VEUH5","EventDocVersion":"2014-08-15"}'}
                        self.logger.info(f'Set status progress to submitted')
                        # TODO: validate the content of the submission by parsing signal.params['event']['Answer'] and comparing it with sqsHit.uuid
                        sqsHit.answer = signal.params['event']['Answer']
                        if sqsHit.uuid not in sqsHit.answer:
                            self.logger.critical(f"Not a valid answer given?! {sqsHit.answer}")
                        
                        sqsHit.submit_hit_at = datetime.datetime.strptime(signal.params['event']['EventTimestamp'],"%Y-%m-%dT%H:%M:%SZ")
                        
                    self.store.saveHIT(sqsHit)
                    
                    if updateStatus:
                        self.logger.warning(f'update status: {sqsHit.getStatus()}')
                        # TODO: have HITStore/HIT take care of this by emitting a signal
                        # only update status if it is the currentHit
                        self.server.statusPage.set('state', sqsHit.getStatus())
                    else:
                        self.logger.warning('DO NOT update status')
                elif signal.name == 'plotter.finished':
                    if self.currentHit.submit_page_at:
                        self.setLight(False)
                        scan = threading.Thread(target=self.scanImage, name='scan')
                        scan.start()
                        self.server.statusPage.set('hit_submitted', self.currentHit.submit_page_at)
                        self.server.statusPage.set('state', self.currentHit.getStatus())
                else:
                    self.logger.critical(f"Unknown signal: {signal.name}")
                    
    
    def makeHit(self):
        self.server.statusPage.reset()
        self.currentHit = self.store.createHIT()
        self.store.currentHit = self.currentHit
        
        self.logger.info(f"Make HIT {self.currentHit.id}")
        
        question = open(self.config['amazon']['task_xml'], mode='r').read().replace("{HIT_NR}",str(self.currentHit.id))
        estimatedHitDuration = self.store.getEstimatedHitDuration()
        
        fee = (self.config['hour_rate_aim']/3600.) * estimatedHitDuration
        self.currentHit.fee = fee
        self.logger.info(f"Based on average duration of {estimatedHitDuration} fee should be {fee}/hit to get hourly rate of {self.config['hour_rate_aim']}")
        new_hit = self.mturk.create_hit(
            Title = 'Trace the drawn line',
            Description = 'Draw a line over the sketched line in the image',
            Keywords = 'polygons, trace, draw',
            Reward = "{:.2f}".format(fee),
            MaxAssignments = 1,
            LifetimeInSeconds = self.config['hit_lifetime'],
            AssignmentDurationInSeconds = estimatedHitDuration * 2, # give people twice as long as we expect them to take
            AutoApprovalDelayInSeconds = self.config['hit_autoapprove_delay'],
            Question = question,
        )
         
        self.logger.info(f"Created hit: {new_hit}")
        self.logger.info("https://workersandbox.mturk.com/mturk/preview?groupId=" + new_hit['HIT']['HITGroupId'])
        
        self.currentHit.hit_id = new_hit['HIT']['HITId']
        
        self.store.saveHIT(self.currentHit)
        # TODO: have HITStore/HIT take care of this by emitting a signal
        self.server.statusPage.set('hit_id', new_hit['HIT']['HITId'])
        self.server.statusPage.set('hit_created', self.currentHit.created_at)
        self.server.statusPage.set('fee', f"${self.currentHit.fee:.2f}")
        self.server.statusPage.set('state', self.currentHit.getStatus())
        
    #     mturk.send_test_event_notification()
        if self.config['amazon']['sqs_url']:
            notification_info= self.mturk.update_notification_settings(
                HITTypeId=new_hit['HIT']['HITTypeId'],
                Notification = {
                    'Destination' : self.config['amazon']['sqs_url'],
                    'Transport': 'SQS',
                    'Version': '2014-08-15',
                    'EventTypes': [
                            'AssignmentAccepted',
                            'AssignmentAbandoned',
                            'AssignmentReturned',
                            'AssignmentSubmitted',
#                             'AssignmentRejected',
        #                     'AssignmentApproved',
#                             'HITCreated',
        #                     'HITExpired',
        #                     'HITReviewable',
        #                     'HITExtended',
        #                     'HITDisposed',
        #                     'Ping',
                    ]
                },
                Active=True
            )
            self.logger.debug(notification_info)
    
    def cleanDrawing(self):
        with self.scanLock:
            self.eventQueue.put(Signal('scan.start'))
            # Scan to reset
            cmd = [
                'sudo', 'scanimage', '-d', 'epkowa'
            ]
            proc = subprocess.Popen(cmd, stdout=subprocess.DEVNULL, stderr=subprocess.PIPE)
            # opens connection to scanner, but only starts scanning when output becomes ready:
            _, e = proc.communicate(80)
            time.sleep(5) # sleep a few seconds for scanner to return to start position
        if e:
            self.logger.critical(f"Scanner caused: {e.decode()}")
        
        self.eventQueue.put(Signal('system.reset'))
        self.eventQueue.put(Signal('scan.finished'))
    
    def reset(self) -> str:
        # TODO: for returns & abandons
        self.plotter.park()
        scan = threading.Thread(target=self.cleanDrawing, name='reset')
        scan.start()
    
    def scanImage(self) -> str:
        """
        Run scanimage on scaner and returns a string with the filename
        """
        
        cmd = [
            'sudo', 'scanimage', '-d', 'epkowa', '--format', 'jpeg',
                '--resolution=100', # lower res, faster (more powerful) scan & wipe
                '-l','25' #y axis, margin from top of the scanner, hence increasing this, moves the scanned image upwards
                ,'-t','22', # x axis, margin from left side scanner (seen from the outside)
		'-x',str(181),
            '-y',str(245)
        ]
        self.logger.info(f"{cmd}")
        filename = self.currentHit.getImagePath()
            
        with self.scanLock:
            self.eventQueue.put(Signal('scan.start'))
            proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
            # opens connection to scanner, but only starts scanning when output becomes ready:
            o, e = proc.communicate(80)
        if e:
            self.logger.critical(f"Scanner caused: {e.decode()}")
            #TODO: should clear self.isRunning.clear() ?
        
        try:
            f = io.BytesIO(o)
            img = Image.open(f)
            img = img.transpose(Image.ROTATE_90).transpose(Image.FLIP_TOP_BOTTOM)
            img.save(filename)
        except Exception as e:
            self.logger.critical("Cannot create image from scan. Did scanner work?")
            self.logger.exception(e)
            # TODO: create 
            copyfile('www/basic.svg', filename)
            
        time.sleep(5) # sleep a few seconds for scanner to return to start position
        
        self.eventQueue.put(Signal('hit.scanned', {'hit_id':self.currentHit.id}))
        self.eventQueue.put(Signal('scan.finished'))
        
    def setLight(self, on):
        value = 1 if on else 0
        cmd = [
            'usbrelay', f'HURTM_1={value}'
        ]
        self.logger.info(f"Trigger light {cmd}")
        code = subprocess.call(cmd)
        if code > 0:
            self.logger.warning(f"Error on light change: {code}")