nopaque/app/services/views.py
2020-04-27 15:22:20 +02:00

84 lines
3.8 KiB
Python

from flask import (abort, current_app, flash, make_response, render_template,
url_for)
from flask_login import current_user, login_required
from werkzeug.utils import secure_filename
from . import services
from .. import db
from ..jobs.forms import AddFileSetupJobForm, AddNLPJobForm, AddOCRJobForm
from ..models import Job, JobInput
import json
import os
SERVICES = {'corpus_analysis': {'name': 'Corpus analysis'},
'file-setup': {'name': 'File setup',
'resources': {'mem_mb': 4096, 'n_cores': 4},
'add_job_form': AddFileSetupJobForm},
'nlp': {'name': 'Natural Language Processing',
'resources': {'mem_mb': 4096, 'n_cores': 2},
'add_job_form': AddNLPJobForm},
'ocr': {'name': 'Optical Character Recognition',
'resources': {'mem_mb': 8192, 'n_cores': 4},
'add_job_form': AddOCRJobForm}}
@services.route('/<service>', methods=['GET', 'POST'])
@login_required
def service(service):
if service not in SERVICES:
abort(404)
if service == 'corpus_analysis':
return render_template('services/{}.html.j2'.format(service),
title=SERVICES[service]['name'])
add_job_form = SERVICES[service]['add_job_form'](prefix='add-job-form')
if add_job_form.is_submitted():
if not add_job_form.validate():
return make_response(add_job_form.errors, 400)
service_args = []
if service == 'nlp':
service_args.append('-l {}'.format(add_job_form.language.data))
if add_job_form.check_encoding.data:
service_args.append('--check-encoding')
if service == 'ocr':
service_args.append('-l {}'.format(add_job_form.language.data))
if add_job_form.binarization.data:
service_args.append('--binarize')
job = Job(creator=current_user,
description=add_job_form.description.data,
mem_mb=SERVICES[service]['resources']['mem_mb'],
n_cores=SERVICES[service]['resources']['n_cores'],
service=service, service_args=json.dumps(service_args),
service_version=add_job_form.version.data,
status='preparing', title=add_job_form.title.data)
if job.service != 'corpus_analysis':
job.create_secure_filename()
db.session.add(job)
db.session.commit()
relative_dir = os.path.join(str(job.user_id), 'jobs', str(job.id))
absolut_dir = os.path.join(current_app.config['NOPAQUE_STORAGE'],
relative_dir)
try:
os.makedirs(absolut_dir)
except OSError:
job.delete()
flash('Internal Server Error', 'job')
return make_response({'redirect_url': url_for('services.service',
service=service)},
500)
else:
for file in add_job_form.files.data:
filename = secure_filename(file.filename)
file.save(os.path.join(absolut_dir, filename))
job_input = JobInput(dir=relative_dir, filename=filename,
job=job)
db.session.add(job_input)
job.status = 'submitted'
db.session.commit()
url = url_for('jobs.job', job_id=job.id)
flash('[<a href="{}">{}</a>] added'.format(url, job.title), 'job')
return make_response(
{'redirect_url': url_for('jobs.job', job_id=job.id)}, 201)
return render_template('services/{}.html.j2'.format(service),
title=SERVICES[service]['name'],
add_job_form=add_job_form)