nopaque/app/corpora/events.py
2020-03-23 12:14:32 +01:00

131 lines
4.9 KiB
Python

from app import db, logger, socketio
from app.events import connected_sessions
from app.models import Corpus, User
from .cqi import CQiClient
from flask import current_app, request
from flask_login import current_user, login_required
import math
'''
' A dictionary containing lists of, with corpus ids associated, Socket.IO
' session ids (sid). {<corpus_id>: [<sid>, ...], ...}
'''
corpus_analysis_sessions = {}
'''
' A dictionary containing Socket.IO session id - CQi client pairs.
' {<sid>: CQiClient, ...}
'''
corpus_analysis_clients = {}
@socketio.on('corpus_analysis_init')
@login_required
def init_corpus_analysis(corpus_id):
logger.warning("Initiating corpus analysis.")
socketio.start_background_task(corpus_analysis_session_handler,
current_app._get_current_object(),
corpus_id, current_user.id, request.sid)
@socketio.on('corpus_analysis_query')
@login_required
def corpus_analysis_query(query):
client = corpus_analysis_clients.get(request.sid)
if client is None:
socketio.emit('query', '[424]: Failed Dependency', room=request.sid)
return
corpus = client.corpora.get('CORPUS')
try:
results = corpus.query(query)
except Exception as e:
logger.warning(e)
response = str(e)
if response == "CQI_CQP_ERROR_GENERAL":
response = {'code': 1}
socketio.emit('corpus_analysis_query', response, room=request.sid)
else:
chunk_size = 100
chunk_start = 0
context = 100
progress = 0
while chunk_start <= results.size:
logger.warning("test")
chunk = results.dump_values(context=context,
first_result=chunk_start,
num_results=chunk_size)
logger.warning(chunk)
if (results.size == 0):
progress = 100
else:
progress = ((chunk_start + chunk_size) / results.size) * 100
progress = min(100, int(math.ceil(progress)))
socketio.emit('corpus_analysis_query',
{'chunk': chunk,
'progress': progress,
'num_matches_total': results.size,
'code': 0},
room=request.sid)
chunk_start += chunk_size
@socketio.on('inspect_match')
@login_required
def inspect_match(message):
client = corpus_analysis_clients.get(request.sid)
if client is None:
socketio.emit('query', '[424]: Failed Dependency',
room=request.sid)
return
# Get more context for given match CPOS
match_context = client.get_sentences(message['cpos'],
get_surrounding_s=True,
l_r_s_context_additional_len=3)
socketio.emit('match_context', match_context, room=request.sid)
def corpus_analysis_session_handler(app, corpus_id, user_id, session_id):
with app.app_context():
''' Setup analysis session '''
corpus = Corpus.query.get(corpus_id)
user = User.query.get(user_id)
if corpus is None:
response = {'code': 404, 'msg': 'Not Found'}
socketio.emit('corpus_analysis_init', response, room=session_id)
return
elif not (corpus.creator == user or user.is_administrator()):
response = {'code': 403, 'msg': 'Forbidden'}
socketio.emit('corpus_analysis_init', response, room=session_id)
return
while corpus.status != 'analysing':
db.session.refresh(corpus)
socketio.sleep(3)
client = CQiClient('corpus_{}_analysis'.format(corpus_id))
try:
client.connect()
except Exception:
response = {'code': 500, 'msg': 'Internal Server Error'}
socketio.emit('corpus_analysis_init', response, room=session_id)
return
corpus_analysis_clients[session_id] = client
if corpus_id not in corpus_analysis_sessions:
corpus_analysis_sessions[corpus_id] = [session_id]
else:
corpus_analysis_sessions[corpus_id].append(session_id)
response = {'code': 201, 'msg': 'Created'}
socketio.emit('corpus_analysis_init', response, room=session_id)
''' Observe analysis session '''
while session_id in connected_sessions:
socketio.sleep(3)
''' Teardown analysis session '''
try:
client.disconnect()
except Exception:
pass
corpus_analysis_clients.pop(session_id, None)
corpus_analysis_sessions[corpus_id].remove(session_id)
if not corpus_analysis_sessions[corpus_id]:
corpus_analysis_sessions.pop(corpus_id, None)
corpus.status = 'stop analysis'
db.session.commit()