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runners.py
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runners.py
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import threading
import uuid
import sys
import subprocess
from datetime import datetime, timedelta
from raven import Client
from time import sleep
from call.place_call import TwilioCallWrapper
from storage.filestorage import BlobManager
from storage.models import Database, NoRecordsToProcessError, Statuses
from storage.secrets import local_tmp_dir, sentry_dsn
from transcribe.transcribe import GoogleTranscriber, TranscriptionStatus
from utils.exceptions import (
TemporaryChillError,
TooManyErrorsException,
TranscriptionError,
TwilioResponseError,
EntityExtractionError,
)
from utils.tempfilemanager import TmpFileCleanup
from extract.date_info_Google import extract_date_time
from extract.location_info_Google import extract_location
class RunnerBase(object):
# Max number of consecutive errors allowed in a runner before shutting down
# program
MAX_ALLOWABLE_ERRORS = 30
default_sleep_time = 5 # seconds
class CourtCallRunner(RunnerBase):
def __init__(self):
self._database = Database()
self._caller = TwilioCallWrapper(self._call_placed_callback,
self._call_done_callback)
self._caller.try_server()
self.consec_error_count = 0
def __str__(self):
return "CourtCallRunner"
def call(self):
"""
Main call loop
At this stage, the recording has been uploaded.
next stages are to call speech to text api then
semantic extraction
"""
if self.consec_error_count > self.MAX_ALLOWABLE_ERRORS:
raise TooManyErrorsException
next_ain = self._database.retrieve_next_record_for_call()
print("Processing {0}".format(next_ain))
try:
self._caller.place_call(next_ain)
self.consec_error_count = 0
except:
# reset and throw
print("Rolling back {0}".format(next_ain))
self._database.set_error(next_ain, Statuses.new)
self.consec_error_count += 1
raise
def _call_placed_callback(self, ain, call_id):
""" Update database to say that a call was started and set call id """
print("Call placed: {0} {1}".format(ain, call_id))
self._database.update_call_id(ain, call_id)
def _call_done_callback(self, ain, call_duration, recording_uri):
"""
Download the call and reupload to azure.
Update database to say that a call was started
and save the recording location.
"""
print("Call duration was: {0}".format(call_duration))
try:
azure_path = BlobManager().download_and_reupload(recording_uri)
print("Azure path: ", azure_path)
self._database.update_azure_path(ain, azure_path)
except TwilioResponseError as e:
raise
class TranscribeRunner(RunnerBase):
def __init__(self):
self.blob_manager = BlobManager()
self.googleTranscriber = GoogleTranscriber()
self.azure_table = Database()
self.consec_error_count = 0
def __str__(self):
return "TranscribeRunner"
def call(self):
if self.consec_error_count > self.MAX_ALLOWABLE_ERRORS:
raise TooManyErrorsException
azure_blob, partition_key = \
self.azure_table.retrieve_next_record_for_transcribing()
with TmpFileCleanup() as tmp_file_store:
filename = "{0}.{1}".format(uuid.uuid4(), "wav")
local_filename = local_tmp_dir + "/" + filename
tmp_file_store.tmp_files.append(local_filename)
self.blob_manager.download_wav_from_blob_and_save_to_local_file(
azure_blob,
local_filename,
)
local_trim_filename = local_tmp_dir + "/trim_" + filename
subprocess.call(
["sox", local_filename, local_trim_filename, "trim", "0", "59"]
)
transcript, transcription_status = \
self.googleTranscriber.transcribe_audio_file_path(
local_trim_filename,
)
self.azure_table.update_transcript(
partition_key,
transcript,
transcription_status,
)
if transcription_status != TranscriptionStatus.success:
self.consec_error_count += 1
raise TranscriptionError("Transcription failed, status: " +
transcription_status)
else:
self.consec_error_count = 0
print("Transcript for {partition_key}: {transcript}"
.format(**locals()))
class EntityRunner(RunnerBase):
def __init__(self):
self.azure_table = Database()
self.consec_error_count = 0
def __str__(self):
return "EntityRunner"
def call(self):
if self.consec_error_count > self.MAX_ALLOWABLE_ERRORS:
raise TooManyErrorsException
transcript, partition_key = self.azure_table.retrieve_next_record_for_extraction()
location_dict = extract_location(transcript)
print("Location for {0}: {1}".format(partition_key, str(location_dict)))
date_dict = extract_date_time(transcript)
print("Date, time for {0}: {1}".format(partition_key, str(date_dict)))
self._process_location_date(partition_key, location_dict, date_dict)
if location_dict == None or date_dict == None:
self.consec_error_count += 1
raise EntityExtractionError(
"failed to extract location or date for {0}"
.format(partition_key))
else:
self.consec_error_count = 0
def _process_location_date(self, case_number, location_dict, date_dict):
# location
city = None
location_confidence = None
state = None
zipcode = None
if location_dict is not None:
city = location_dict["City"]
location_confidence = location_dict["Confidence_location"]
state = location_dict["State"]
zipcode = location_dict["Zipcode"]
# date
date = None
if date_dict is not None:
year = date_dict["year"]
month = date_dict["month"]
day = date_dict["day"]
hour = date_dict["hour"] or 0
minute = date_dict["minute"] or 0
# only report a date if we found year, month and day
if year is not None and month is not None and day is not None:
date = datetime(year=year, month=month, day=day, hour=hour, minute=minute)
self.azure_table.update_location_date(case_number, city, location_confidence, state, zipcode, date)
class ErrorRecovery(RunnerBase):
"""
Handles two kinds of errors:
- Stale progressions.
- Error states.
"""
default_sleep_time = 60 * 10
def __init__(self):
self.azure_table = Database()
def __str__(self):
return "ErrorRecovery"
def call(self):
cutoff_time = datetime.now() - timedelta(days=14)
try:
num_resets = self.azure_table.reset_stale_calls(cutoff_time)
except NoRecordsToProcessError:
num_resets = 0
print("Reset {0} records".format(num_resets))
class RunnerThread(threading.Thread):
def __init__(self, runnerClass, stop_event):
threading.Thread.__init__(self)
self.runner = runnerClass()
self.client = Client(sentry_dsn)
self.stop_event = stop_event
def __str__(self):
return str(self.runner)
def run(self):
while not self.stop_event.isSet():
try:
self.runner.call()
print("{0}: Sleeping after success".format(self.runner))
sleep(self.runner.default_sleep_time)
except NoRecordsToProcessError:
mins = 5
print("{0}: Nothing to do: sleeping for {1} minutes".format(self.runner, mins))
sleep(60 * mins)
except TemporaryChillError as e:
print("{0}: No recording after call completion; temporary chill for {1} seconds".format(self.runner, e.pause_time))
self.client.captureException()
sleep(e.pause_time)
except KeyboardInterrupt:
sys.exit("Exited due to Keyboard Interrupt")
return
except TooManyErrorsException:
print("\n Too many consecutive errors with the " +
str(self.runner) + " thread; Setting stop event \n")
self.stop_event.set()
return
except (
TranscriptionError,
TwilioResponseError,
EntityExtractionError,
) as e:
print("{0}: {1}".format(self.runner, e))
print("The " + str(self.runner) + " thread has received a stop event")
if __name__ == "__main__":
import argparse
import sys
import signal
description = """CourtReminder! Process INS court cases. To add new cases, see ./insert.py.
If you call with no arguments, all runners will start."""
parser = argparse.ArgumentParser(description=description)
parser.add_argument('--call', help='Run caller', action='store_const', const="call")
parser.add_argument('--transcribe', help='Run transcriber', action='store_const', const="transcribe")
parser.add_argument('--parse', help='Run entity parser', action='store_const', const="parse")
parser.add_argument('--recover', help='Run error recovery function', action='store_const', const="recover")
parser.add_argument('--re_extract',
help='Include previously parsed records in entity parsing, used for testing',
action='store_true')
parser.add_argument('--re_transcribe',
help='Include previously transcribed records in entity transcription, used for testing',
action='store_true')
parser.add_argument('--tryAgain',
help='Try calling again numbers for which we failed to get location date info',
action='store_true')
parser.add_argument('--setCallingToNew',
help='Resets statuses stuck on calling to new',
action='store_true')
parser.add_argument('--set_to_new',
help='Resets all status to new, used for testing',
action='store_true')
args = vars(parser.parse_args())
if args.pop('tryAgain'):
db = Database()
db.change_status(Statuses.failed_to_return_info, Statuses.new)
if args.pop('setCallingToNew'):
db = Database()
db.change_status(Statuses.calling, Statuses.new)
if args.pop('re_extract'):
db = Database()
db.change_status(Statuses.extracting_done, Statuses.transcribing_done)
db.change_status(Statuses.extracting, Statuses.transcribing_done)
if args.pop('re_transcribe'):
db = Database()
db.change_status(Statuses.transcribing_done, Statuses.recording_ready)
db.change_status(Statuses.transcribing, Statuses.recording_ready)
db.change_status(Statuses.extracting, Statuses.recording_ready)
db.change_status(Statuses.extracting_done, Statuses.recording_ready)
if args.pop('set_to_new'):
db = Database()
db.change_status(Statuses.transcribing_done, Statuses.new)
db.change_status(Statuses.transcribing, Statuses.new)
db.change_status(Statuses.extracting, Statuses.new)
db.change_status(Statuses.extracting_done, Statuses.new)
db.change_status(Statuses.calling, Statuses.new)
db.change_status(Statuses.failed_to_return_info, Statuses.new)
db.change_status(Statuses.error, Statuses.new)
runnables = [k for k, v in args.items() if v]
if not runnables:
# if none passed, run them all.
runnables = args.keys()
runnable_map = {'call': CourtCallRunner,
'transcribe': TranscribeRunner,
'recover': ErrorRecovery,
'parse': EntityRunner}
stop_event = threading.Event() #all threads will share this stop event
for runnable in runnables:
thread = RunnerThread(runnable_map.get(runnable), stop_event)
thread.start()
def interrupt(*args, **kwargs):
sys.exit(0)
signal.signal(signal.SIGINT, interrupt)
while not stop_event.isSet():
sleep(60)
print("There are {0} threads active:".format(threading.active_count()))
for thread in threading.enumerate():
print("{0}: {1}".format(thread.name, thread))