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Create and use a decorator for background functions

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This commit is contained in:
Patrick Jentsch 2020-04-21 18:34:21 +02:00
parent 79c9ca97b2
commit bc27744946
12 changed files with 131 additions and 133 deletions
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8
app/auth/views.py
View File

@ -5,7 +5,7 @@ from . import auth
from .forms import (LoginForm, ResetPasswordForm, ResetPasswordRequestForm,
RegistrationForm)
from .. import db
from ..email import create_message, send_async
from ..email import create_message, send
from ..models import User
import os
import shutil
@ -70,7 +70,7 @@ def register():
token = user.generate_confirmation_token()
msg = create_message(user.email, 'Confirm Your Account',
'auth/email/confirm', token=token, user=user)
send_async(msg)
send(msg)
flash('A confirmation email has been sent to you by email.')
return redirect(url_for('auth.login'))
return render_template('auth/register.html.j2',
@ -107,7 +107,7 @@ def resend_confirmation():
token = current_user.generate_confirmation_token()
msg = create_message(current_user.email, 'Confirm Your Account',
'auth/email/confirm', token=token, user=current_user)
send_async(msg)
send(msg)
flash('A new confirmation email has been sent to you by email.')
return redirect(url_for('auth.unconfirmed'))
@ -126,7 +126,7 @@ def reset_password_request():
msg = create_message(user.email, 'Reset Your Password',
'auth/email/reset_password', token=token,
user=user)
send_async(msg)
send(msg)
flash('An email with instructions to reset your password has been '
'sent to you.')
return redirect(url_for('auth.login'))

30
app/corpora/background_functions.py
View File

@ -1,30 +0,0 @@
from ..models import Corpus, CorpusFile
def delete_corpus_(app, corpus_id):
with app.app_context():
corpus = Corpus.query.get(corpus_id)
if corpus is None:
# raise Exception('Corpus {} not found!'.format(corpus_id))
pass
else:
corpus.delete()
def delete_corpus_file_(app, corpus_file_id):
with app.app_context():
corpus_file = CorpusFile.query.get(corpus_file_id)
if corpus_file is None:
# raise Exception('Corpus file {} not found!'.format(corpus_file_id))
pass
else:
corpus_file.delete()
def edit_corpus_file_(app, corpus_file_id):
with app.app_context():
corpus_file = CorpusFile.query.get(corpus_file_id)
if corpus_file is None:
raise Exception('Corpus file {} not found!'.format(corpus_file_id))
else:
corpus_file.insert_metadata()

41
app/corpora/tasks.py Normal file
View File

@ -0,0 +1,41 @@
from ..decorators import background
from ..models import Corpus, CorpusFile
import os
import shutil
@background
def delete_corpus(app, corpus_id):
with app.app_context():
corpus = Corpus.query.get(corpus_id)
if corpus is None:
return
path = os.path.join(app.config['NOPAQUE_STORAGE'], str(corpus.user_id),
'corpora', str(corpus.id))
shutil.rmtree(path, ignore_errors=True)
corpus.delete()
@background
def delete_corpus_file(app, corpus_file_id):
with app.app_context():
corpus_file = CorpusFile.query.get(corpus_file_id)
if corpus_file is None:
return
path = os.path.join(app.config['NOPAQUE_STORAGE'], corpus_file.dir,
corpus_file.filename)
try:
os.remove(path)
except Exception:
pass
else:
corpus_file.delete()
@background
def edit_corpus_file(app, corpus_file_id):
with app.app_context():
corpus_file = CorpusFile.query.get(corpus_file_id)
if corpus_file is None:
raise Exception('Corpus file {} not found!'.format(corpus_file_id))
corpus_file.insert_metadata()

22
app/corpora/views.py
View File

@ -1,10 +1,8 @@
from flask import (abort, current_app, flash, make_response, redirect, request,
render_template, url_for, send_from_directory)
from flask_login import current_user, login_required
from threading import Thread
from . import corpora
from .background_functions import (delete_corpus_, delete_corpus_file_,
edit_corpus_file_)
from . import tasks
from .forms import (AddCorpusFileForm, AddCorpusForm, EditCorpusFileForm,
QueryDownloadForm, QueryForm, DisplayOptionsForm,
InspectDisplayOptionsForm)
@ -78,9 +76,7 @@ def delete_corpus(corpus_id):
corpus = Corpus.query.get_or_404(corpus_id)
if not (corpus.creator == current_user or current_user.is_administrator()):
abort(403)
thread = Thread(target=delete_corpus_,
args=(current_app._get_current_object(), corpus.id))
thread.start()
tasks.delete_corpus(corpus_id)
flash('Corpus deleted!')
return redirect(url_for('main.dashboard'))
@ -119,10 +115,7 @@ def add_corpus_file(corpus_id):
title=add_corpus_file_form.title.data)
db.session.add(corpus_file)
db.session.commit()
thread = Thread(target=edit_corpus_file_,
args=(current_app._get_current_object(),
corpus_file.id))
thread.start()
tasks.edit_corpus_file(corpus_file.id)
flash('Corpus file added!')
return make_response(
{'redirect_url': url_for('corpora.corpus', corpus_id=corpus.id)},
@ -142,9 +135,7 @@ def delete_corpus_file(corpus_id, corpus_file_id):
if not (corpus_file.corpus.creator == current_user
or current_user.is_administrator()):
abort(403)
thread = Thread(target=delete_corpus_file_,
args=(current_app._get_current_object(), corpus_file.id))
thread.start()
tasks.delete_corpus_file(corpus_file_id)
flash('Corpus file deleted!')
return redirect(url_for('corpora.corpus', corpus_id=corpus_id))
@ -191,10 +182,7 @@ def edit_corpus_file(corpus_id, corpus_file_id):
corpus_file.school = edit_corpus_file_form.school.data
corpus_file.title = edit_corpus_file_form.title.data
db.session.commit()
thread = Thread(target=edit_corpus_file_,
args=(current_app._get_current_object(),
corpus_file.id))
thread.start()
tasks.edit_corpus_file(corpus_file_id)
flash('Corpus file edited!')
return redirect(url_for('corpora.corpus', corpus_id=corpus_id))
# If no form is submitted or valid, fill out fields with current values

40
app/decorators.py
View File

@ -1,16 +1,38 @@
from flask import abort
from flask import abort, current_app
from flask_login import current_user
from flask_socketio import disconnect
from functools import wraps
from .models import Permission
from threading import Thread
def admin_required(f):
@wraps(f)
def wrapped(*args, **kwargs):
if not current_user.can(Permission.ADMIN):
if current_user.is_administrator:
return f(*args, **kwargs)
else:
abort(403)
return f(*args, **kwargs)
return wrapped
def background(f):
''' This decorator executes a function in a Thread '''
@wraps(f)
def wrapped(*args, **kwargs):
app = current_app._get_current_object()
thread = Thread(target=f, args=(app, *args), kwargs=kwargs)
thread.start()
return thread
return wrapped
def socketio_admin_required(f):
@wraps(f)
def wrapped(*args, **kwargs):
if current_user.is_administrator:
return f(*args, **kwargs)
else:
disconnect()
return wrapped
@ -22,13 +44,3 @@ def socketio_login_required(f):
else:
return f(*args, **kwargs)
return wrapped
def socketio_admin_required(f):
@wraps(f)
def wrapped(*args, **kwargs):
if not current_user.can(Permission.ADMIN):
disconnect()
else:
return f(*args, **kwargs)
return wrapped

10
app/email.py
View File

@ -1,7 +1,7 @@
from flask import current_app, render_template
from flask_mail import Message
from threading import Thread
from . import mail
from .decorators import background
def create_message(recipient, subject, template, **kwargs):
@ -15,13 +15,7 @@ def create_message(recipient, subject, template, **kwargs):
return msg
@background
def send(app, msg):
with app.app_context():
mail.send(msg)
def send_async(msg):
app = current_app._get_current_object()
thread = Thread(target=send, args=(app, msg))
thread.start()
return thread

9
app/jobs/background_functions.py
View File

@ -1,9 +0,0 @@
from ..models import Job
def delete_job_(app, job_id):
with app.app_context():
job = Job.query.get(job_id)
if job is None:
raise Exception('Job {} not found!'.format(job_id))
job.delete()

28
app/jobs/tasks.py Normal file
View File

@ -0,0 +1,28 @@
from time import sleep
from .. import db
from ..decorators import background
from ..models import Job
import os
import shutil
@background
def delete_job(app, job_id):
with app.app_context():
job = Job.query.get(job_id)
if job is None:
return
if job.status not in ['complete', 'failed']:
job.status = 'canceling'
db.session.commit()
while job.status != 'canceled':
# In case the daemon handled a job in any way
if job.status != 'canceling':
job.status = 'canceling'
db.session.commit()
sleep(1)
db.session.refresh(job)
path = os.path.join(app.config['NOPAQUE_STORAGE'], str(job.user_id),
'jobs', str(job.id))
shutil.rmtree(path, ignore_errors=True)
job.delete()

7
app/jobs/views.py
View File

@ -1,9 +1,8 @@
from flask import (abort, current_app, flash, redirect, render_template,
send_from_directory, url_for)
from flask_login import current_user, login_required
from threading import Thread
from . import jobs
from .background_functions import delete_job_
from . import tasks
from ..models import Job, JobInput, JobResult
import os
@ -23,9 +22,7 @@ def delete_job(job_id):
job = Job.query.get_or_404(job_id)
if not (job.creator == current_user or current_user.is_administrator()):
abort(403)
thread = Thread(target=delete_job_,
args=(current_app._get_current_object(), job_id))
thread.start()
tasks.delete_job(job_id)
flash('Job has been deleted!')
return redirect(url_for('main.dashboard'))

59
app/models.py
View File

@ -2,7 +2,6 @@ from datetime import datetime
from flask import current_app
from flask_login import UserMixin, AnonymousUserMixin
from itsdangerous import BadSignature, TimedJSONWebSignatureSerializer
from time import sleep
from werkzeug.security import generate_password_hash, check_password_hash
from werkzeug.utils import secure_filename
from . import db, logger, login_manager
@ -326,26 +325,12 @@ class Job(db.Model):
def delete(self):
"""
Delete the job and its inputs and outputs from database and filesystem.
Delete the job and its inputs and results from the database.
"""
if self.status != 'complete' and self.status != 'failed':
self.status = 'canceling'
db.session.commit()
while self.status != 'canceled':
# In case the daemon handled a job in any way
if self.status != 'canceling':
self.status = 'canceling'
db.session.commit()
sleep(1)
db.session.refresh(self)
path = os.path.join(current_app.config['NOPAQUE_STORAGE'],
str(self.user_id), 'jobs', str(self.id))
try:
shutil.rmtree(path)
except Exception as e:
''' TODO: Proper exception handling '''
logger.warning(e)
pass
for input in self.inputs:
db.session.delete(input)
for result in self.results:
db.session.delete(result)
db.session.delete(self)
db.session.commit()
@ -391,14 +376,6 @@ class CorpusFile(db.Model):
corpus_id = db.Column(db.Integer, db.ForeignKey('corpora.id'))
def delete(self):
path = os.path.join(current_app.config['NOPAQUE_STORAGE'],
self.dir, self.filename)
try:
os.remove(path)
except Exception as e:
''' TODO: Proper exception handling '''
logger.warning(e)
pass
self.corpus.status = 'unprepared'
db.session.delete(self)
db.session.commit()
@ -460,12 +437,6 @@ class Corpus(db.Model):
files = db.relationship('CorpusFile', backref='corpus', lazy='dynamic',
cascade='save-update, merge, delete')
def __repr__(self):
"""
String representation of the corpus. For human readability.
"""
return '<Corpus %r>' % self.title
def to_dict(self):
return {'id': self.id,
'creation_date': self.creation_date.timestamp(),
@ -475,22 +446,20 @@ class Corpus(db.Model):
'title': self.title,
'user_id': self.user_id}
def build(self):
pass
def delete(self):
for corpus_file in self.files:
corpus_file.delete()
path = os.path.join(current_app.config['NOPAQUE_STORAGE'],
str(self.user_id), 'corpora', str(self.id))
try:
shutil.rmtree(path)
except Exception as e:
''' TODO: Proper exception handling '''
logger.warning(e)
pass
db.session.delete(corpus_file)
db.session.delete(self)
db.session.commit()
def prepare(self):
pass
def __repr__(self):
"""
String representation of the corpus. For human readability.
"""
return '<Corpus %r>' % self.title
'''

8
app/templates/macros/materialize.html.j2
View File

@ -9,6 +9,8 @@
{% if field.type == 'BooleanField' %}
{{ render_boolean_field(field, *args, **kwargs) }}
{% elif field.type == 'DecimalRangeField' %}
{{ render_decimal_range_field(field, *args, **kwargs) }}
{% elif field.type == 'IntegerField' %}
{% set tmp = kwargs.update({'type': 'number'}) %}
{% if 'class_' in kwargs and 'validate' not in kwargs['class_'] %}
@ -42,6 +44,12 @@
</div>
{% endmacro %}
{% macro render_decimal_range_field(field) %}
<p class="range-field">
{{ field(**kwargs) }}
</p>
{% endmacro %}
{% macro render_file_field(field) %}
<div class="file-field input-field">
<div class="btn">

2
docker-entrypoint.sh
View File

@ -9,4 +9,4 @@ GUNICORN_WORKERS="${GUNICORN_WORKERS:-1}"
source venv/bin/activate
flask deploy
gunicorn --bind :5000 --workers "${GUNICORN_WORKERS}" --worker-class eventlet nopaque:app
gunicorn --access-logfile - --bind :5000 --error-logfile - --workers "${GUNICORN_WORKERS}" --worker-class eventlet nopaque:app